36 results on '"Cook, Elizabeth J."'
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2. Comparison of two cultivation methods for domesticating wild red algal eucheumatoids for use in the seaweed industry.
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Yahya, Nurulafifah, Poong, Sze-Wan, Brodie, Juliet, Cottier-Cook, Elizabeth J., Wilbraham, Joanna, Mallinson, Saul, Kassim, Azhar, Mansor, Ku Nor Afiza Asnida Ku, and Lim, Phaik-Eem
- Abstract
Eucheumatoid cultivation is an important alternative livelihood for small-scale farmers in coastal areas in east Malaysia. Over the last 50 years, the same clones of the red eucheumatoid Kappaphycus alvarezii and Kappaphycus striatus have been vegetatively propagated for cultivation resulting in low genetic diversity. This has made the cultivars more vulnerable to pests and diseases, which has been further exacerbated by climate change. There is an urgent need, therefore, to develop new cultivars that are resilient to pests and diseases, as well as environmental change. In this study, wild eucheumatoids were collected from four regions in Semporna, East Malaysia: Kerindingan, Sibuhun, Sebangkat and Omadal. These eucheumatoids were then grown at a commercial seaweed farm in Silungun, Semporna using two methods: i) tie-tie and ii) basket net for 60 days and their performance was evaluated based on growth and survival rates. A higher mean specific growth rate (SGR) was recorded by wild-collected Kappaphycus spp. (2.15 ± 1.90% day
−1 ) and Eucheuma denticulatum (2.83 ± 3.27% day−1 ) when tie-tie was used. However, survival of the wild-collected eucheumatoids was better with the basket net, which led to a reduction in grazing and prevented detachment from culture lines. Of 212 original individuals, 72 survived throughout the study, despite the prevalence of pests and ice-ice disease. Of these, 46.15% Kappaphycus spp. and 50.75% E. denticulatum survived when cultivated using the basket net and 17.20% Kappaphycus spp. and 30.77% E. denticulatum survived when cultivated using tie-tie. The mean SGR and survival rate were significantly correlated with temperature, salinity, pH, current velocity and rainfall (p < 0.05). The surviving wild-collected Kappaphycus spp. and E. denticulatum have the potential to be developed into new cultivars for possible commercial use. [ABSTRACT FROM AUTHOR]- Published
- 2024
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3. ICTs Influence on Knowledge Sharing in Higher Education: A Pre‐AI Systematic Literature Review.
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Kumar, Nirved, Cook, Elizabeth J., Fayda‐Kinik, F. Sehkar, and Maisuradze, Lela
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DIGITAL transformation ,INFORMATION & communication technologies ,DIGITAL literacy ,INFORMATION sharing ,RESEARCH questions - Abstract
Digital transformation, through innovation in information and communication technologies (ICTs), impacts higher education (HE) and fosters knowledge sharing (KS). While research explores the implications of digital transformation in HE, its specific influence on KS remains understudied. This systematic literature review investigates the nexus between ICTs and KS in HE by examining peer‐reviewed literature prior to the AI boom. Three databases were searched, yielding 473 journal articles, which were screened, eligibility checked and assessed for quality and relevance to predetermined research questions. Eighteen eligible empirical studies were analysed, revealing ICTs influence on KS across university functions: teaching‐learning, governance/operations and research. Retrospectively, this study also demonstrates that the rapid pivot to fully online functions during the pandemic was possible because of prior ICT advancements despite known barriers (e.g., digital literacy, Internet connectivity). Essentially, ICTs enable vital KS for universities to ensure they remain resilient and sustainable now and into the future. [ABSTRACT FROM AUTHOR]
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- 2024
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4. Preparing the Future Public Health Workforce: Fostering Global Citizenship Through the Relational Employability Framework—Insights from Two Case Studies.
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Cook, Elizabeth J., Doherty, Sally-Anne, and Wallace, Ruth
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COLLEGE curriculum ,PUBLIC health education ,CAREER development ,WORLD citizenship ,HIGHER education ,EMPLOYABILITY - Abstract
A well-prepared public health workforce is essential for reducing disease burdens and improving population health, necessitating an education that addresses global and complex challenges. This paper explores the integration of the Relational Employability Framework in public health education as a tool to foster critical reflection and cultivate global citizenship among students and graduates. Global citizenship encompasses the social, political, environmental and economic actions of globally conscious individuals and communities, recognising that individuals operate within diverse local and global networks. Relational employability expands traditional notions of graduate employability, incorporating not only foundational career development and human interactions but also connections with more-than-human elements, including ecologies, technologies and materials. Our research, conducted at Edith Cowan University in Perth, Western Australia, involved two case studies using qualitative interviews. Case Study 1, drawn from the Cook's doctoral research, explored student experiences with the Relational Employability Framework within an undergraduate capstone unit. Case Study 2, a school-funded project, gathered graduate perspectives to inform ongoing curriculum development. The findings indicate that the Relational Employability Framework can help support the development of global citizenship through critical reflective practice, as students reported improved ability to engage with diverse perspectives and societal challenges, and graduates highlighted the framework's role in supporting ethical, evidence-based practice in professional contexts. Additionally, the framework supported the development of a reflective mindset, which graduates said helped them make informed, value-based career decisions, thus advancing their professional growth. This study suggests that adopting a relational employability approach can prepare globally competent and reflective public health professionals and recommends its implementation across health and higher education. [ABSTRACT FROM AUTHOR]
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- 2024
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5. Reimagining the language of engagement in a post-stakeholder world.
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Reed, Mark S., Merkle, Bethann Garramon, Cook, Elizabeth J., Hafferty, Caitlin, Hejnowicz, Adam P., Holliman, Richard, Marder, Ian D., Pool, Ursula, Raymond, Christopher M., Wallen, Kenneth E., Whyte, David, Ballesteros, Marta, Bhanbhro, Sadiq, Borota, Siniša, Brennan, Marnie L., Carmen, Esther, Conway, Elaine A., Everett, Rosie, Armstrong-Gibbs, Fiona, and Jensen, Eric
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COMMUNICATION ethics ,DECOLONIZATION ,LANGUAGE & languages ,NORMATIVITY (Ethics) - Abstract
Language matters in shaping perceptions and guiding behaviour. The term stakeholder is widely used, yet little attention is paid to the possibility that its use may inadvertently perpetuate colonial narratives and reinforce systemic inequities. In this article, we critically examine the limitations of the stakeholder concept and its ambiguity, normativity, and exclusionary implications. We emphasise the importance of using language that gives a voice to marginalised groups, promotes inclusion and equity, and fosters meaningful and reflexive participation in decision-making processes. In critiquing the use of the term and calling for alternative practices, we aim to contribute to the decolonisation of research norms and the creation of more inclusive and equitable societies. Therefore, rather than advocating a single alternative term, we suggest a focus on the people, places, and species affected by decisions, interventions, projects, and issues. [ABSTRACT FROM AUTHOR]
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- 2024
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6. Horizon scanning of potential threats to high‐Arctic biodiversity, human health and the economy from marine invasive alien species: A Svalbard case study.
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Cottier‐Cook, Elizabeth J., Bentley‐Abbot, Jude, Cottier, Finlo R., Minchin, Dan, Olenin, Sergej, and Renaud, Paul E.
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INTRODUCED species ,MARINE biodiversity ,OCEAN temperature ,SEAWATER salinity ,BIODIVERSITY ,SEA ice - Abstract
The high Arctic is considered a pristine environment compared with many other regions in the northern hemisphere. It is becoming increasingly vulnerable to invasion by invasive alien species (IAS), however, as climate change leads to rapid loss of sea ice, changes in ocean temperature and salinity, and enhanced human activities. These changes are likely to increase the incidence of arrival and the potential for establishment of IAS in the region. To predict the impact of IAS, a group of experts in taxonomy, invasion biology and Arctic ecology carried out a horizon scanning exercise using the Svalbard archipelago as a case study, to identify the species that present the highest risk to biodiversity, human health and the economy within the next 10 years. A total of 114 species, currently absent from Svalbard, recorded once and/or identified only from environmental DNA samples, were initially identified as relevant for review. Seven species were found to present a high invasion risk and to potentially cause a significant negative impact on biodiversity and five species had the potential to have an economic impact on Svalbard. Decapod crabs, ascidians and barnacles dominated the list of highest risk marine IAS. Potential pathways of invasion were also researched, the most common were found associated with vessel traffic. We recommend (i) use of this approach as a key tool within the application of biosecurity measures in the wider high Arctic, (ii) the addition of this tool to early warning systems for strengthening existing surveillance measures; and (iii) that this approach is used to identify high‐risk terrestrial and freshwater IAS to understand the overall threat facing the high Arctic. Without the application of biosecurity measures, including horizon scanning, there is a greater risk that marine IAS invasions will increase, leading to unforeseen changes in the environment and economy of the high Arctic. [ABSTRACT FROM AUTHOR]
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- 2024
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7. Overview of global Gracilaria production, the role of biosecurity policies and regulations in the sustainable development of this industry.
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Mantri, Vaibhav A., Kambey, Cicilia S. B., Cottier‐Cook, Elizabeth J., Usandizaga, Sara, Buschmann, Alejandro H., Chung, Ik Kyo, Liu, Tao, Sondak, Calvyn F. A., Qi, Zizhong, Lim, Phaik Eem, and Van Nguyen, Nguyen
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SUSTAINABLE development ,GRACILARIA ,AQUACULTURE ,BIOSECURITY ,COMMODITY futures ,AQUACULTURE industry - Abstract
Gracilaria aquaculture is one of the fastest‐growing sectors, contributing to 10.5% of the global seaweed feed‐stock supply chain in 2019. It predominantly caters to food‐grade agar, animal feed and non‐food sector applications viz. biotechnology, biomedical and pharmaceuticals. It has witnessed a rapid expansion triggered by increased demand due to commodity trade. Biosecurity‐related issues are the key factors constraining its expansion, but are seldom addressed. The global gracilarioids aquaculture is dominated by China and other Asian countries, namely the Republic of Korea, Indonesia, the Philippines and Vietnam. This paper provides an assessment of their national biosecurity capacity, including current risk management strategies, policies and the implementation of existing regulations. It also highlights specific gaps in national policies and regulations, which can be addressed to improve their health management systems. Biosecurity management strategies, such as the provision of clear regulatory guidance, mechanisms for notifying disease and pest outbreaks, movement of live seaweed, risk assessment, stakeholder incentivisation and certification are recommended. Further, insights into the impending biosecurity measures to the emerging countries in this domain namely India and Malaysia are discussed. We suggest, implementing a uniform format of global integrated biosecurity measures across the Gracilaria aquaculture industry, but this requires organisational, operational and procedural changes, coupled with a cross‐sectoral application of risk analysis protocols. Despite one of the important seaweed aquaculture taxa, an overview of Gracilaria production, the role of biosecurity policy and regulation in the sustainable development of this industry was still lacking, this is the first global effort in this direction. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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8. Horizon scanning for potential invasive non‐native species across the United Kingdom Overseas Territories.
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Dawson, Wayne, Peyton, Jodey M., Pescott, Oliver L., Adriaens, Tim, Cottier‐Cook, Elizabeth J., Frohlich, Danielle S., Key, Gillian, Malumphy, Chris, Martinou, Angeliki F., Minchin, Dan, Moore, Niall, Rabitsch, Wolfgang, Rorke, Stephanie L., Tricarico, Elena, Turvey, Katharine M. A., Winfield, Ian J., Barnes, David K. A., Baum, Diane, Bensusan, Keith, and Burton, Frederic J.
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NON-self-governing territories ,INTRODUCED species ,RATTUS norvegicus ,FIRE ants ,SHIPPING containers - Abstract
Invasive non‐native species (INNS) are recognized as a major threat to island biodiversity, ecosystems, and economies globally. Preventing high‐risk INNS from being introduced is the most cost‐effective way to avoid their adverse impacts. We applied a horizon scanning approach to identify potentially INNS in the United Kingdom Overseas Territories (OTs), ranging from Antarctica to the Caribbean, and from the Pacific to the Atlantic. High‐risk species were identified according to their potential for arrival, establishment, and likely impacts on biodiversity and ecosystem function, economies, and human health. Across OTs, 231 taxa were included on high‐risk lists. The highest ranking species were the Asian green mussel (Perna viridis), little fire ant (Wasmannia auropunctata), brown rat (Rattus norvegicus), and mesquite tree (Prosopis juliflora). Shipping containers were identified as the introduction pathway associated with the most species. The shared high‐risk species and pathways identified provide a guide for other remote islands and archipelagos to focus ongoing biosecurity and surveillance aimed at preventing future incursions. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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9. The Diversity of Eucheumatoid Seaweed Cultivars in the Philippines.
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Dumilag, Richard V., Crisostomo, Bea A., Aguinaldo, Zae-Zae A., Hinaloc, Lourie Ann R., Liao, Lawrence M., Roa-Quiaoit, Hilly Ann, Dangan-Galon, Floredel, Zuccarello, Giuseppe C., Guillemin, Marie-Laure, Brodie, Juliet, Cottier-Cook, Elizabeth J., and Roleda, Michael Y.
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MARINE algae culture ,MARINE algae ,TRADITIONAL knowledge ,PLANT breeding ,LOCAL knowledge - Abstract
Collectively known as eucheumatoids, Eucheuma denticulatum, Kappaphycus alvarezii, K. malesianus, and K. striatus are the main farmed seaweed species in the Philippines. The success of seaweed farming for over five decades in the country is due, in part, to the high diversity of cultivars maintained by the Filipino farmers. Notwithstanding the fact that many eucheumatoid cultivars are presently (and consistently) recognized by the Filipino farmers, there has been no attempt to summarize the current state of the local traditional knowledge about the diversity of this seaweed group, especially with reference to the taxonomy, cultivar designation and distribution. Factors based on present day local knowledge on the eucheumatoid cultivars and what is known on genetic identification in the Philippines were also discussed. A total of 66 cultivars recognized across 58 provinces in the Philippines were documented. Most of these cultivars were morphologically identified as either K. alvarezii or K. striatus, however, the majority were yet to be genetically identified. In part, due to higher demand of kappa-carrageenan extract as compared from the iota type, K. alvarezii and K. striatus were widely cultivated in the Philippines than that of E. denticulatum. Only in the southern Philippines that K. malesianus is currently cultivated. The diverse cultivars identified in this study suggest that the Filipino farmers possess important traditional knowledge that can be useful for future crop selection and breeding. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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10. Effect of biosecurity practices and diseases on growth and carrageenan properties of Kappaphycus alvarezii and Eucheuma denticulatum cultivated in Zanzibar, Tanzania.
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Ndawala, Msafiri A., Msuya, Flower E., Cabarubias, Jennefe P., Kambey, Cicilia S. B., Buriyo, Amelia S., Mvungi, Esther F., and Cottier-Cook, Elizabeth J.
- Abstract
Seaweed aquaculture biosecurity measures were implemented at the farm level to assess their effectiveness on the occurrence of diseases and epiphytes, correlation of environmental parameters to disease occurrence, and effect on the growth rate and carrageenan properties on the commercially important red seaweeds Kappaphycus alvarezii and Eucheuma denticulatum in Zanzibar, Tanzania. The experiments covered two seasons (cold season; July–September 2020 and hot season; January-March 2021). A significantly lower disease and epiphyte occurrence in K. alvarezii (50% and 38%) and E. denticulatum (45% and 31%) was observed for the bio-secured seaweed farm compared with the non-bio-secured farm during the cold and hot season, respectively. Disease incidence for K. alvarezii and E. denticulatum was correlated to temperature (p < 0.05) and salinity (p < 0.05). Kappaphycus alvarezii exhibited a significantly higher specific growth rate (SGR) (1.97–3.52%) at the bio-secured farm compared to non-bio-secured farm for both seasons and E. denticulatum had a greater SGR (3.05%) during the hot season. The carrageenan yield and gel strength were significantly higher for healthy seaweed species compared with infected seaweeds (i.e., exhibiting signs of disease and/ or epiphytes) cultured during the cold and hot seasons, respectively. These data clearly show that disease and epiphyte outbreaks can significantly reduce the SGR, carrageenan yield and gel strength in K. alvarezii and E. denticulatum, and that these effects can be influenced by season. Farm level biosecurity practices, however, can effectively reduce disease and epiphyte occurrence and enhance seaweed growth for both K. alvarezii and E. denticulatum. [ABSTRACT FROM AUTHOR]
- Published
- 2022
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11. Influence of coating type, colour, and deployment timing on biofouling by native and non-native species in a marine renewable energy context.
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Nall, Christopher R., Schläppy, Marie-Lise, Cottier-Cook, Elizabeth J., and Guerin, Andrew J.
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RENEWABLE energy sources ,FOULING ,ANTIFOULING paint ,INTRODUCED species ,RENEWABLE energy industry ,SURFACE coatings - Abstract
Biofouling on marine renewable energy devices presents engineering challenges for this developing sector, and has implications for the spread of marine non-native species (NNS) in coastal waters. This is particularly true at sites with abundant energy resource, little existing infrastructure, and few established NNS. Device coatings, such as antifouling paints, could reduce the risk of NNS spread. Settlement on coatings of various types and colours, representing those likely to be used on renewable energy devices, was assessed in the Orkney Islands, northern Scotland. Assemblage composition, but not overall biofouling cover, varied initially among different coloured surfaces, although differences decreased over time. Different coating types (an anticorrosive paint, a biocidal paint and a fouling-release coating) differed in biofouling abundance and composition for the full duration of the experiment. NNS were mostly, but not completely, absent from antifouling surfaces. These results can help informing antifouling strategies for the marine renewable energy industry. [ABSTRACT FROM AUTHOR]
- Published
- 2022
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12. Seaweed farming in Africa: current status and future potential.
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Msuya, Flower E., Bolton, John, Pascal, Fred, Narrain, Koushul, Nyonje, Betty, and Cottier-Cook, Elizabeth J.
- Abstract
Global demand for seaweed and its products has increased exponentially over the last 25 years. Equally, the continent of Africa and its offshore islands have considerable potential for seaweed production to contribute to world demand. Compared with China and the rest of Asia, Africa lags behind in seaweed production and utilisation. However, for red eucheumatoid seaweeds, Africa is the third-largest producer in the world, producing about 120,000 t (FW) annually. Details are provided for 13 African countries that are currently involved in seaweed farming and harvesting, commercially or experimentally, for export or domestic utilisation. Eucheuma spp. and Kappaphycus spp. in Tanzania represent 92% and in Madagascar 4.7% of continental production, and Ulva spp. and Gracilaria spp. in South Africa represent 1.5%. Over 2000 species of seaweed have been recorded in Africa, some of which are already successfully cultivated in other parts of the world. The environmental conditions across the continent range from warm, tropical waters to the cooler, nutrient-rich waters of the southwest, enabling the cultivation of seaweeds from the tropical, carrageenan-producing eucheumatoids to temperate kelp species. Seaweed aquaculture production in Africa, led predominantly by women, has improved the livelihoods of its coastal people. Challenges through disease and pest outbreaks, as a result of climate change, and the low prices paid to farmers are highlighted as major constraints on the development of this industry. Through scaling up and expanding current efforts in production and utilisation of seaweeds, Africa has the potential to join China and Southeast Asia as a global leader in producing, processing and consuming a wide variety of seaweeds. [ABSTRACT FROM AUTHOR]
- Published
- 2022
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13. Seaweed aquaculture: a preliminary assessment of biosecurity measures for controlling the ice-ice syndrome and pest outbreaks of a Kappaphycus farm.
- Author
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Kambey, Cicilia S. B., Campbell, Iona, Cottier-Cook, Elizabeth J., Nor, Adibi R. M., Kassim, Azhar, Sade, Ahemad, and Lim, Phaik E.
- Abstract
The application of biosecurity in seaweed aquaculture plays an important role in reducing the impact of disease and pest outbreaks. The continuous occurrence of seaweed pests including the macroalgal epiphytes, epi-endophytic filamentous algae and biofilms on Kappaphycus farms may also potentially induce further incidences of the ice-ice syndrome. In this study, on-farm biosecurity management measures were tested on the commercially grown seaweeds Kappaphycus malesianus and Kappaphycus alvarezii during peak ice-ice season at Gallam-Gallam Village, Sabah, Malaysia. The investigation was focused on preventative control measures including the early detection of the ice-ice syndrome and pests through propagule health checks, regular cleaning of the crop thallus and associated long-line ropes and monitoring of the environment. Farm procedures and practices were also assessed in terms of their biosecurity 'risk' using the hazard analysis and critical control point (HCCAP) approach. Observations were replicated in two different farm management systems; one system adopted routine biosecurity measures and the other had no biosecurity measures. The results showed that the ice-ice syndrome and pest outbreak was significantly decreased by 60–75% for K. malesianus and 29–71% for K. alvarezii at the farm which adopted the routine biosecurity measures compared with the no biosecurity treatment. The biosecurity measures also significantly improved growth rate and seaweed quality. The infection levels of the epi-endophyte Melanothamnus sp. contributed to the ice-ice syndrome in K. malesianus, whilst the epiphyte coverage was correlated to the ice-ice incidence in K. alvarezii. This study provides the first evidence of biosecurity management measures significantly decreasing the incidence of the ice-ice syndrome and pests on a commercial seaweed farm. [ABSTRACT FROM AUTHOR]
- Published
- 2021
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14. Exploring, harnessing and conserving marine genetic resources towards a sustainable seaweed aquaculture.
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Brakel, Janina, Sibonga, Rema C., Dumilag, Richard V., Montalescot, Valeria, Campbell, Iona, Cottier‐Cook, Elizabeth J., Ward, Georgia, Le Masson, Virginie, Liu, Tao, Msuya, Flower E., Brodie, Juliet, Lim, Phaik‐Eem, and Gachon, Claire M. M.
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MARINE algae ,AQUACULTURE ,ALGAL reproduction ,SUSTAINABLE development ,BIOSECURITY - Abstract
Societal Impact Statement: Seaweed cultivation is the fastest‐growing aquaculture sector, with a demonstrable potential to drive development in some of the poorest coastal populations worldwide. However, sustainable exploitation, fair access and equitable benefits from marine genetic resources, such as seaweeds have yet to be fully realised. Patchy fundamental knowledge on the genetic diversity and metabolic potential of algae limits their exploitation; scant practical skills and low investment in breeding restricts germplasm availability and the Nagoya protocol has only partially remediated insufficient governance. Further developments and the addressing of knowledge gaps in relation to biosecurity, breeders' rights and conservation of genetic resources are needed for progress. Summary: We review how seaweed genetic resources are currently used in aquaculture, in relation to the diversification and rapidly increasing use of marine resources. Using a revealing case‐study, we summarise the potential for positive societal change, underpinned by the cultivation of eucheumatoid carrageenophytes (species of the red algal genera Eucheuma and Kappaphycus), an activity which has been successfully initiated in many tropical countries to support their economic development. We also review the challenges currently faced by this industry and identify potential threats to the seaweed cultivation sector. Accordingly, we suggest new directions to support the continued development of an economically resilient and environmentally sustainable industry based on the utilisation of genetic resources. [ABSTRACT FROM AUTHOR]
- Published
- 2021
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15. Understanding biosecurity: knowledge, attitudes and practices of seaweed farmers in the Philippines.
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Mateo, Jonalyn P., Campbell, Iona, Cottier-Cook, Elizabeth J., Luhan, Maria Rovilla J., Ferriols, Victor Marco Emmanuel N., and Hurtado, Anicia Q.
- Abstract
Farmers are one of the most important components of any plant-based cultivation industry. The Philippines is one of the world's major producers of red carrageenophyte algae and has tens of thousands of farmers involved in this industry. The production of algae such as Kappaphycus and Eucheuma increased significantly from the early 1970s, when the industry was established, before declining from the mid-2000s, due to a number of reasons, including disease and epiphyte outbreaks. The introduction of biosecurity measures has been one approach used to tackle this decline. Biosecurity-related knowledge, attitude and practices (KAP) of the seaweed farmers were assessed in the four highest seaweed producing regions in the Philippines: (1) Tawi-Tawi, (2) Palawan, (3) Zamboanga and (4) Bohol. Analyses showed that seaweed farmers from Tawi-Tawi had relatively higher KAP mean scores than the other three sites. Palawan and Bohol farmers, however, scored lower on their knowledge, higher on their attitude and highest on their practices compared with the other areas. Farmers from Zamboanga scored the lowest in both their attitude and practice mean scores, although their knowledge score was one of the highest. This is the first KAP assessment applied to the seaweed farming industry globally and the results, in which the farmers' biosecurity-related knowledge and practices, which scored "Fair" (50–75%) across all the regions, and their attitudes, which scored predominantly "Good" (> 75%) suggest that there is potential to raise the score for biosecurity practices. This assessment highlights how biosecurity challenges are currently addressed by seaweed farmers in the Philippines and suggests how the KAP survey could be used as a tool by policymakers and scientists to address gaps in biosecurity management practices. [ABSTRACT FROM AUTHOR]
- Published
- 2021
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16. Evaluation of work-integrated learning: A realist synthesis and toolkit to enhance university evaluative practices.
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COOK, ELIZABETH J.
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SYSTEMATIC reviews ,LEARNING strategies ,SOCIAL sciences ,UNIVERSITIES & colleges ,DESCRIPTIVE statistics ,DATA analysis software ,ERIC (Information retrieval system) - Abstract
Situated in the context of work-integrated learning (WIL), this paper aims to build the evaluative capacity of universities in response to an increasing need for evaluation in higher education. It contributes a realist synthesis of international peer-reviewed literature on university evaluation of WIL, which revealed no use of evaluation theory or approaches by the authors. In response, to support the enhancement of university evaluative practices, this paper offers a toolkit of evaluation theory and approaches, with examples relating to WIL, featuring an evaluation planning tool (RUFDATAE). RUFDATAE is demonstrated using a study from the realist synthesis, to highlight its relevance, usefulness and simplicity, or ease of use, for university stakeholders conducting any evaluation. This paper also contributes to recent scholarly debates about evaluation - how it is perceived and differs from research - suggesting evaluation could be considered as an extension of research. [ABSTRACT FROM AUTHOR]
- Published
- 2021
17. Biosecurity policy and legislation of the seaweed aquaculture industry in Tanzania.
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Rusekwa, Sadock B., Campbell, Iona, Msuya, Flower E., Buriyo, Amelia S., and Cottier-Cook, Elizabeth J.
- Abstract
Pest and disease outbreaks have significant impacts on the livelihoods of seaweed farmers each year, particularly in low- to middle-income countries around the world. Commercial seaweed farming of the red carrageenophytes, Eucheuma denticulatum, Kappaphycus alvarezii and Kappaphycus striatus, in Tanzania was established in 1989. The impacts of pests and diseases on the local seaweed industry had serious implications for the environment, society, local culture and human health. The industry was initially characterised by growth, but since 2002 has been severely limited due to pest and disease outbreaks, exacerbated by the effects of climate change. This paper identifies existing biosecurity frameworks in Tanzanian legislation and policies in order to assess their content regarding the management of pests and diseases in the seaweed industry. A total of thirteen frameworks were identified and analysed for their general biosecurity scope and inclusion of specific risks. Of the thirteen, only four were legally binding, and only four were identified to be applicable to the seaweed industry. National frameworks were predominantly designed to support finfish aquaculture; therefore, national authorities lack the expertise, experience and scientific basis on biosecurity issues in seaweed industry compared with other aquatic commercial commodities to identify and mitigate the risks from pest and disease outbreaks in the seaweed farming industry. Recommendations are provided to assist regulators in establishing biosecurity policies, which either explicitly include or are specifically designed, to support the Tanzanian seaweed industry. This analysis reveals where biosecurity capacity can be developed to support a sustainable and economically productive national seaweed farming industry. [ABSTRACT FROM AUTHOR]
- Published
- 2020
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18. An analysis of the current status and future of biosecurity frameworks for the Indonesian seaweed industry.
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Kambey, Cicilia S. B., Campbell, Iona, Sondak, Calvyn F. A., Nor, Adibi R. M., Lim, Phaik E., and Cottier-Cook, Elizabeth J.
- Abstract
Indonesia is the world largest producer of the red seaweeds Kappaphycus and Eucheuma; however, this country is facing significant challenges such as disease outbreaks, epiphyte infestations and a loss in seedling quality. Biosecurity practices have been widely adopted in other aquaculture sectors and when enforced can help to limit the introduction and spread of diseases and pests. To assess current capacity for biosecurity in seaweed aquaculture in Indonesia, a systematic analysis of policy frameworks including legislation, regulatory tools, and national standards was conducted. Biosecurity themes and risks were used to evaluate current national biosecurity content. The results identified major challenges faced by the industry in order to implement biosecurity policies in practice. Barriers to implementation included unspecific reference to the seaweed aquaculture sector, limited variety of approaches to biosecurity, limited use of up-to-date scientific evidence, insufficient guidance for the use of precaution and insufficient inclusion of specific biosecurity hazards. In general, although national regulations are currently under revision, current policies indicate a lack of clarity where biosecurity is included. Six recommendations are suggested to incorporate proactive biosecurity actions into current frameworks, with the aim of improving the health and sustainability of the seaweed aquaculture sector in Indonesia. [ABSTRACT FROM AUTHOR]
- Published
- 2020
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19. Biosecurity policy and legislation for the global seaweed aquaculture industry.
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Campbell, Iona, Kambey, Cicilia S. B., Mateo, Jonalyn P., Rusekwa, Sadock B., Hurtado, Anicia Q., Msuya, Flower E., Stentiford, Grant D., and Cottier-Cook, Elizabeth J.
- Abstract
Each year a significant proportion of global food production is lost to pests and diseases, with concerted efforts by government and industry focussed on application of effective biosecurity policies which attempt to minimise their emergence and spread. In aquaculture the volume of seaweeds produced is second only to farmed fish and red algal carrageenophytes currently represent approximately 42% of global production of all seaweeds. Despite this importance, expansion of the seaweed sector is increasingly limited by the high prevalence of recalcitrant diseases and epiphytic pests with potential to emerge and with the demonstrated propensity to spread, particularly in the absence of effective national and international biosecurity policies. Developing biosecurity policy and legislation to manage biosecurity risk in seaweed aquaculture is urgently required to limit these impacts. To understand current international biosecurity frameworks and their efficacy, existing legislative frameworks were analysed quantitatively for the content of biosecurity measures, applicability to the seaweed industry, and inclusion of risks posed by diseases, pests and non-native species. Deficiencies in existing frameworks included the following: inconsistent terminology for inclusion of cultivated seaweeds, unclear designation of implementation responsibility, insufficient evidence-based information and limited alignment of biosecurity hazards and risks. Given the global importance of the cultivation of various seaweeds in alleviating poverty in low and middle income countries, it is crucial that the relatively low-unit value of the industry (i.e. as compared with other aquatic animal sectors) should not conflate with a perceived low risk of disease or pest transfer, nor the subsequent economic and environmental impact that disease transfer may impact on receiving nations (well beyond their seaweed operations). Developing a clear basis for development of robust international biosecurity policies related to the trade in seaweeds arising from the global aquaculture industry, by first addressing the gaps highlighted in this study, will be crucial in limiting impacts of pests and diseases on this valuable industry and on natural capital in locations where seaweeds are farmed. [ABSTRACT FROM AUTHOR]
- Published
- 2020
- Full Text
- View/download PDF
20. Analysis of biosecurity-related policies governing the seaweed industry of the Philippines.
- Author
-
Mateo, Jonalyn P., Campbell, Iona, Cottier-Cook, Elizabeth J., Luhan, Maria Rovilla J., Ferriols, Victor Marco Emmanuel N., and Hurtado, Anicia Q.
- Abstract
The seaweed industry in the Philippines is a significant contributor to aquaculture production, both nationally and internationally. It out-produces the capture fisheries sector and most global producers, with the exception of China and Indonesia. Seaweed species, particularly Kappaphycus and Eucheuma spp., have been farmed throughout the country since the early 1970s. In 2017, the Philippines produced 1.4 million tonnes (fwt) and exported 35,490 tonnes of seaweed and carrageenan with a value of US$174 million. However, a decreasing trend in seaweed production has been observed since the mid-2000s as a result of pest and disease outbreaks, among other factors, which have been exacerbated by climate change. This paper is the first to analyze biosecurity-related national policies and legislation (a.k.a. 'frameworks' collectively), which are relevant to the seaweed industry in the Philippines. A total of 12 frameworks were identified, of which a sub-set of seven were compared using defined biosecurity themes, risks, and management measures to evaluate how seaweed biosecurity is incorporated into national policy. The inclusion of biosecurity-related activities in national frameworks was found to be limited to aquatic animal commodities or agricultural crops. Only the Code of Good Aquaculture Practices (GAqP) for seaweed specifically included seaweed cultivation, however, it did not include any biosecurity measures. The results indicated a clear gap in current biosecurity legislation and policy in the Philippines, which if addressed have the potential to reduce the impact of endemic and emergent diseases and pests and support the sustainable growth of this important industry. [ABSTRACT FROM AUTHOR]
- Published
- 2020
- Full Text
- View/download PDF
21. Invasive non‐native species likely to threaten biodiversity and ecosystems in the Antarctic Peninsula region.
- Author
-
Hughes, Kevin A., Pescott, Oliver L., Peyton, Jodey, Adriaens, Tim, Cottier‐Cook, Elizabeth J., Key, Gillian, Rabitsch, Wolfgang, Tricarico, Elena, Barnes, David K. A., Baxter, Naomi, Belchier, Mark, Blake, Denise, Convey, Peter, Dawson, Wayne, Frohlich, Danielle, Gardiner, Lauren M., González‐Moreno, Pablo, James, Ross, Malumphy, Christopher, and Martin, Stephanie
- Subjects
INTRODUCED species ,BIODIVERSITY ,FLOWERING of plants ,MARINE invertebrates ,ECOSYSTEMS ,BIOLOGICAL invasions - Abstract
The Antarctic is considered to be a pristine environment relative to other regions of the Earth, but it is increasingly vulnerable to invasions by marine, freshwater and terrestrial non‐native species. The Antarctic Peninsula region (APR), which encompasses the Antarctic Peninsula, South Shetland Islands and South Orkney Islands, is by far the most invaded part of the Antarctica continent. The risk of introduction of invasive non‐native species to the APR is likely to increase with predicted increases in the intensity, diversity and distribution of human activities. Parties that are signatories to the Antarctic Treaty have called for regional assessments of non‐native species risk. In response, taxonomic and Antarctic experts undertook a horizon scanning exercise using expert opinion and consensus approaches to identify the species that are likely to present the highest risk to biodiversity and ecosystems within the APR over the next 10 years. One hundred and three species, currently absent in the APR, were identified as relevant for review, with 13 species identified as presenting a high risk of invading the APR. Marine invertebrates dominated the list of highest risk species, with flowering plants and terrestrial invertebrates also represented; however, vertebrate species were thought unlikely to establish in the APR within the 10 year timeframe. We recommend (a) the further development and application of biosecurity measures by all stakeholders active in the APR, including surveillance for species such as those identified during this horizon scanning exercise, and (b) use of this methodology across the other regions of Antarctica. Without the application of appropriate biosecurity measures, rates of introductions and invasions within the APR are likely to increase, resulting in negative consequences for the biodiversity of the whole continent, as introduced species establish and spread further due to climate change and increasing human activity. [ABSTRACT FROM AUTHOR]
- Published
- 2020
- Full Text
- View/download PDF
22. Biosecurity implications of the highly invasive carpet sea-squirt Didemnum vexillum Kott, 2002 for a protected area of global significance.
- Author
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Cottier-Cook, Elizabeth J., Minchin, Dan, Giesler, Rebecca, Graham, Jennifer, Mogg, Andrew O. M., Sayer, Martin D. J., and Matejusova, Iveta
- Subjects
PROTECTED areas ,DNA ,BIOSECURITY ,CYTOCHROME oxidase ,MARICULTURE ,OYSTER culture - Abstract
Loch Creran on the west coast of Scotland supports the most expansive reefs of the serpulid (Serpula vermicularis) in the world. It also supports flame shell (Limaria hians) and horse mussel (Modiolus modiolus) reefs, thereby ensuring this loch received designation as a European Special Area of Conservation in 2005. In 2015, environmental DNA of the invasive, non-native colonial tunicate Didemnum vexillum, which has a worldwide distribution, was detected in Loch Creran. Didemnum vexillum was confirmed as being present at an oyster farm in the sea loch, using the cytochrome oxidase I gene (COI), following rapid intertidal and dive surveys in early September 2016. The abundance and distribution range assessment carried out at the farm indicated an early-stage D. vexillum invasion. The follow up dive surveys and wider loch intertidal surveys carried out in 2017 and 2018 confirmed that the D. vexillum presence continues to be associated exclusively with the oyster farm. This is the first time that such a highly invasive species has been found within a protected area of global significance and it has significant biosecurity and policy implications regarding how to manage such invasive species. [ABSTRACT FROM AUTHOR]
- Published
- 2019
- Full Text
- View/download PDF
23. Developing a list of invasive alien species likely to threaten biodiversity and ecosystems in the European Union.
- Author
-
Roy, Helen E., Bacher, Sven, Essl, Franz, Adriaens, Tim, Aldridge, David C., Bishop, John D. D., Blackburn, Tim M., Branquart, Etienne, Brodie, Juliet, Carboneras, Carles, Cottier-Cook, Elizabeth J., Copp, Gordon H., Dean, Hannah J., Eilenberg, Jørgen, Gallardo, Belinda, Garcia, Mariana, García‐Berthou, Emili, Genovesi, Piero, Hulme, Philip E., and Kenis, Marc
- Subjects
INTRODUCED species ,BIODIVERSITY ,ECOSYSTEMS ,LISTS ,ENVIRONMENTAL law - Abstract
The European Union (EU) has recently published its first list of invasive alien species (IAS) of EU concern to which current legislation must apply. The list comprises species known to pose great threats to biodiversity and needs to be maintained and updated. Horizon scanning is seen as critical to identify the most threatening potential IAS that do not yet occur in Europe to be subsequently risk assessed for future listing. Accordingly, we present a systematic consensus horizon scanning procedure to derive a ranked list of potential IAS likely to arrive, establish, spread and have an impact on biodiversity in the region over the next decade. The approach is unique in the continental scale examined, the breadth of taxonomic groups and environments considered, and the methods and data sources used. International experts were brought together to address five broad thematic groups of potential IAS. For each thematic group the experts first independently assembled lists of potential IAS not yet established in the EU but potentially threatening biodiversity if introduced. Experts were asked to score the species within their thematic group for their separate likelihoods of i) arrival, ii) establishment, iii) spread, and iv) magnitude of the potential negative impact on biodiversity within the EU. Experts then convened for a 2‐day workshop applying consensus methods to compile a ranked list of potential IAS. From an initial working list of 329 species, a list of 66 species not yet established in the EU that were considered to be very high (8 species), high (40 species) or medium (18 species) risk species was derived. Here, we present these species highlighting the potential negative impacts and the most likely biogeographic regions to be affected by these potential IAS. We identified 66 species, that are currently absent from the EU, which pose a very high, high or medium threat to biodiversity and ecosystems. The species span a range of functional groups, with primary producers being numerically dominant. Escape from confinement is the pathway considered to be the most likely route of introduction for many species, particularly among plants and vertebrates. [ABSTRACT FROM AUTHOR]
- Published
- 2019
- Full Text
- View/download PDF
24. Black on black education 2.0: critical race perspectives on personally engaged pedagogy for/by black pre-service teachers.
- Author
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Berry, Theodorea Regina and Cook, Elizabeth J. Bowers
- Subjects
TEACHER education ,PROFESSIONAL education ,TEACHING - Abstract
Public schools have increasing numbers of its teachers fitting into one demographic, white and female, while the numbers of Black/African American teachers decrease. This trend has not changed since the publication of Black on Black Education: Personally Engaged Pedagogy for/by African American Pre-Service Teachers. Furthermore, African American collegiate students who decide to enter teaching may face a chilly climate because of their cultural and educational experiences as they encounter devaluation in the classroom. This work provides a critical race reflective examination into the teaching and learning experiences and dilemmasI using personally engaged pedagogy as a means of enhancing the quality of the learning experiences for African American pre-service teachers. Critical race theory (CRT) and Critical Race Feminism (CRF) will be used as the theoretical framework for understanding the role of race and gender in teacher education. Critical autoethnography is the methodological approach used to examine the subject phenomenon. Field notes, research journaling, and student memoirs provide data for this critical autoethnography. This work highlights the significance of CRT/CRF's unique voice of color and CRF's multidimensionality to engaged pedagogy, creating a personally engaged pedagogy. [ABSTRACT FROM AUTHOR]
- Published
- 2018
- Full Text
- View/download PDF
25. Biofouling community composition across a range of environmental conditions and geographical locations suitable for floating marine renewable energy generation.
- Author
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Macleod, Adrian K., Stanley, Michele S., Day, John G., and Cook, Elizabeth J.
- Subjects
FOULING ,ENVIRONMENTAL impact analysis ,FLOATING harbors ,RENEWABLE energy sources ,ECOLOGICAL impact - Abstract
Knowledge of biofouling typical of marine structures is essential for engineers to define appropriate loading criteria in addition to informing other stakeholders about the ecological implications of creating novel artificial environments. There is a lack of information regarding biofouling community composition (including weight and density characteristics) on floating structures associated with future marine renewable energy generation technologies. A network of navigation buoys were identified across a range of geographical areas, environmental conditions (tidal flow speed, temperature and salinity), and deployment durations suitable for future developments. Despite the perceived importance of environmental and temporal factors, geographical location explained the greatest proportion of the observed variation in community composition, emphasising the importance of considering geography when assessing the impact of biofouling on device functioning and associated ecology. The principal taxa associated with variation in biofouling community composition were mussels (Mytilus edulis), which were also important when determining loading criteria. [ABSTRACT FROM AUTHOR]
- Published
- 2016
- Full Text
- View/download PDF
26. Classification of Non-Indigenous Species Based on Their Impacts: Considerations for Application in Marine Management.
- Author
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Ojaveer, Henn, Galil, Bella S., Campbell, Marnie L., Carlton, James T., Canning-Clode, João, Cook, Elizabeth J., Davidson, Alisha D., Hewitt, Chad L., Jelmert, Anders, Marchini, Agnese, McKenzie, Cynthia H., Minchin, Dan, Occhipinti-Ambrogi, Anna, Olenin, Sergej, and Ruiz, Gregory
- Subjects
SOCIAL segmentation ,INTRODUCED species ,SOCIOECONOMIC factors ,ECONOMIC impact ,BIOLOGICAL invasions ,ECONOMICS - Abstract
Assessment of the ecological and economic/societal impacts of the introduction of non-indigenous species (NIS) is one of the primary focus areas of bioinvasion science in terrestrial and aquatic environments, and is considered essential to management. A classification system of NIS, based on the magnitude of their environmental impacts, was recently proposed to assist management. Here, we consider the potential application of this classification scheme to the marine environment, and offer a complementary framework focussing on value sets in order to explicitly address marine management concerns. Since existing data on marine NIS impacts are scarce and successful marine removals are rare, we propose that management of marine NIS adopt a precautionary approach, which not only would emphasise preventing new incursions through pre-border and at-border controls but also should influence the categorisation of impacts. The study of marine invasion impacts requires urgent attention and significant investment, since we lack the luxury of waiting for the knowledge base to be acquired before the window of opportunity closes for feasible management. [ABSTRACT FROM AUTHOR]
- Published
- 2015
- Full Text
- View/download PDF
27. Rapid assessment of marine non-native species in northern Scotland and a synthesis of existing Scottish records.
- Author
-
Nall, Christopher R., Guerin, Andrew J., and Cook, Elizabeth J.
- Subjects
INTRODUCED species ,FOULING organisms ,RENEWABLE energy sources ,WATER power ,HARBORS - Abstract
In this study, we compiled existing records of fouling marine non-native species in Scotland, and created a national checklist of these species. We then targeted a selection of these species (excluding those that could not be reliably identified) in a rapid assessment survey of 27 harbours in the north of Scotland. Collation of existing records revealed that 23 fouling marine non-native species were known to be present in Scotland. The geographic distribution of these records was not uniform, and they were largely underrepresented in the north and east of mainland Scotland, likely as result of lack of survey effort. In the rapid assessment survey of north Scotland, 9 out of 18 targeted species were found: Austrominius modestus (Darwin, 1854); Botrylloides violaceus Oka, 1927; Caprella mutica Schurin, 1935; Codium fragile fragile (Suringar) Hariot, 1889; Corella eumyota Traustedt, 1882; Heterosiphonia japonica Yendo, 1920; Neosiphonia harveyi (Bailey) Kim, Choi, Guiry and Saunders, 2001; Schizoporella japonica Ortmann, 1890; and Tricellaria inopinata d'Hondt and Occhipinti Ambrogi, 1985. The non-native bryozoan Bugula simplex Hincks, 1886, which was not targeted, was also found, and this constituted the first confirmed Scottish record. The surveys provided 60 new records and extended the northward national range for most of the species found. The number of fouling non-native species in the surveyed harbours was positively associated with the presence of floating structures and vessel activity indices. Our study presents an overview of the current status of fouling marine non-native species in Scotland, and the results of the first comprehensive survey of these species in the north of Scotland. The latter provides a baseline dataset for monitoring future changes, which may occur as a result of the development of the wave and tidal energy industry in the north of Scotland. The wave and tidal energy industry has the potential to facilitate the invasion of fouling marine non-native species through the provision of habitat and by increasing vector activity. [ABSTRACT FROM AUTHOR]
- Published
- 2015
- Full Text
- View/download PDF
28. Marine renewable energy development: assessing the Benthic Footprint at multiple scales.
- Author
-
Miller, Raeanne G, Hutchison, Zoë L, Macleod, Adrian K, Burrows, Michael T, Cook, Elizabeth J, Last, Kim S, and Wilson, Ben
- Subjects
OCEAN energy resources ,RENEWABLE energy sources ,BENTHIC ecology ,MULTIPLE scale method ,MARINE mammals ,MARINE ecology - Abstract
Increasing concerns over global climate change and sustainable fuel procurement are driving the search for new ways to derive energy from the seas. Globally, the offshore wind energy sector has progressed rapidly, and wave and tidal-current energy converters are now approaching deployment at commercial scales. To date, most studies of the ecological effects of marine renewable energy development have concentrated on birds and marine mammals. Here, we focus on the consequences for benthic flora and fauna, and for benthic habitats across a variety of scales. We use a "Benthic Footprint" concept to discuss the potential for species-specific environmental responses, and to consider the poorly understood cumulative effects of wind, wave, and tidalcurrent energy operations on marine ecosystems. Collaborations between ecologists, industry specialists, and government bodies, as well as better designs for devices, arrays, and developments consisting of multiple arrays, can contribute to the goal of reducing the Benthic Footprint of marine renewable energy, thereby facilitating large-scale implementation of these technologies. [ABSTRACT FROM AUTHOR]
- Published
- 2013
- Full Text
- View/download PDF
29. Distribution of the invasive bryozoan Tricellaria inopinata in Scotland and a review of its European expansion.
- Author
-
Cook, Elizabeth J., Stehlíková, Jiřina, Beveridge, Christine M., Burrows, Michael T., De Blauwe, Hans, and Faasse, Marco
- Subjects
BRYOZOA ,INTRODUCED invertebrates ,SHELLFISH culture ,SALINITY ,AQUACULTURE - Abstract
The invasive bryozoan, Tricellaria inopinata d'Hondt & Occhipinti Ambrogi, 1985 was first recorded in European waters in the early 1980's and has since been reported from 166 locations from the Mediterranean Sea to the north-east Atlantic coastline. This species is typically associated with human activity, including commercial and recreational vessels and aquaculture, where it has been found in abundance on boat hulls and propellers, floating pontoons and structures associated with shellfish cultivation. Tricellaria inopinata has a high tolerance to a wide range of salinities and temperatures, although following the harsh winter of 2010, populations disappeared in Germany suggesting that this species is near the northern limit of its range under current climatic conditions. It is expected to continue to disperse though, throughout the Mediterranean, English Channel, North and Celtic Seas. [ABSTRACT FROM AUTHOR]
- Published
- 2013
- Full Text
- View/download PDF
30. Alien species in British brackish and marine waters.
- Author
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Minchin, Dan, Cook, Elizabeth J., and Clark, Paul F.
- Subjects
INTRODUCED aquatic species ,BRACKISH water ecology ,MARINE ecology ,ZOOGEOGRAPHY ,COASTS - Abstract
Ninety alien species have been identified from British marine and brackish environments; of which 58 are established. Their arrival has been principally due to shipping and imported consignments of cultured species. The majority of alien species were initially reported from the English Channel, with many subsequently spreading northwards to the North or Celtic Seas. The majority of aliens in Britain originate from the North Pacific (N=35), followed by the North-west Atlantic (N=22). Additional alien species may be expected as a result of continued trade, port, and marina developments. Alterations in climate and extreme weather events are likely to result in future changes to the distribution of marine and brackish water alien species around the British coast. [ABSTRACT FROM AUTHOR]
- Published
- 2013
- Full Text
- View/download PDF
31. Echinoderms Display Morphological and Behavioural Phenotypic Plasticity in Response to Their Trophic Environment.
- Author
-
Hughes, Adam D., Brunner, Lars, Cook, Elizabeth J., Kelly, Maeve S., Wilson, Ben, and Krkosek, Martin
- Subjects
SEA urchins ,BENTHIC ecology ,MARINE habitats ,REEFS ,GRAZING ,ALGAE - Abstract
The trophic interactions of sea urchins are known to be the agents of phase shifts in benthic marine habitats such as tropical and temperate reefs. In temperate reefs, the grazing activity of sea urchins has been responsible for the destruction of kelp forests and the formation of 'urchin barrens', a rocky habitat dominated by crustose algae and encrusting invertebrates. Once formed, these urchin barrens can persist for decades. Trophic plasticity in the sea urchin may contribute to the stability and resilience of this alternate stable state by increasing diet breadth in sea urchins. This plasticity promotes ecological connectivity and weakens species interactions and so increases ecosystem stability. We test the hypothesis that sea urchins exhibit trophic plasticity using an approach that controls for other typically confounding environmental and genetic factors. To do this, we exposed a genetically homogenous population of sea urchins to two very different trophic environments over a period of two years. The sea urchins exhibited a wide degree of phenotypic trophic plasticity when exposed to contrasting trophic environments. The two populations developed differences in their gross morphology and the test microstructure. In addition, when challenged with unfamiliar prey, the response of each group was different. We show that sea urchins exhibit significant morphological and behavioural phenotypic plasticity independent of their environment or their nutritional status. [ABSTRACT FROM AUTHOR]
- Published
- 2012
- Full Text
- View/download PDF
32. Review of climate change impacts on marine aquaculture in the UK and Ireland.
- Author
-
Callaway, Ruth, Shinn, Andrew P., Grenfell, Suzanne E., Bron, James E., Burnell, Gavin, Cook, Elizabeth J., Crumlish, Margaret, Culloty, Sarah, Davidson, Keith, Ellis, Robert P., Flynn, Kevin J., Fox, Clive, Green, Darren M., Hays, Graeme C., Hughes, Adam D., Johnston, Erin, Lowe, Christopher D., Lupatsch, Ingrid, Malham, Shelagh, and Mendzil, Anouska F.
- Subjects
MARICULTURE industry ,CLIMATE change ,MYTILUS edulis ,ATLANTIC salmon ,MARINE resources conservation - Abstract
ABSTRACT Marine aquaculture relies on coastal habitats that will be affected by climate change. This review assesses current knowledge of the threats and opportunities of climate change for aquaculture in the UK and Ireland, focusing on the most commonly farmed species, blue mussels ( Mytilus edulis) and Atlantic salmon ( Salmo salar)., There is sparse evidence to indicate that climate change is affecting aquaculture in the UK and Ireland. Impacts to date have been difficult to discern from natural environmental variability, and the pace of technological development in aquaculture overshadows effects of climatic change. However, this review of broader aquaculture literature and the likely effects of climate change suggests that over the next century, climate change has the potential to directly impact the industry., Impacts are related to the industry's dependence on the marine environment for suitable biophysical conditions. For instance, changes in the frequency and strength of storms pose a risk to infrastructure, such as salmon cages. Sea-level rise will shift shoreline morphology, reducing the areal extent of some habitats that are suitable for the industry. Changes in rainfall patterns will increase the turbidity and nutrient loading of rivers, potentially triggering harmful algal blooms and negatively affecting bivalve farming. In addition, ocean acidification may disrupt the early developmental stages of shellfish., Some of the most damaging but least predictable effects of climate change relate to the emergence, translocation and virulence of diseases, parasites and pathogens, although parasites and diseases in finfish aquaculture may be controlled through intervention. The spread of nuisance and non-native species is also potentially damaging., Rising temperatures may create the opportunity to rear warmer water species in the UK and Ireland. Market forces, rather than technical feasibility, are likely to determine whether existing farmed species are displaced by new ones. Copyright © 2012 John Wiley & Sons, Ltd. [ABSTRACT FROM AUTHOR]
- Published
- 2012
- Full Text
- View/download PDF
33. Fatty acid composition as a dietary indicator of the invasive caprellid, Caprella mutica (Crustacea: Amphipoda).
- Author
-
Cook, Elizabeth J., Shucksmith, Richard, Orr, Heather, Ashton, Gail V., and Berge, Jørgen
- Subjects
FATTY acids ,CAPRELLIDAE ,AMPHIPODA ,CRUSTACEA ,ATLANTIC salmon ,BIOMARKERS ,FISH habitat improvement ,AQUATIC invertebrates ,AQUACULTURE - Abstract
The invasive caprellid amphipod Caprella mutica is one of the most widely dispersed marine non-native species globally. Originating in sub-boreal north-east Asia, it has now been found in both the northern and the southern hemispheres. One potential reason why this species is such a successful invader is its ability to utilise a wide variety of food sources. The contribution of different food sources to the diet of C. mutica was estimated using fatty acids as biomarkers. Caprella mutica was collected from three field sites, including sea cages stocked with Atlantic salmon Salmo salar, shellfish longlines stocked with the blue mussel Mytilus edulis and mooring lines marking the Loch Linnhe Artificial Reef (>2 km from caged finfish aquaculture), where established populations of this species are known to occur. In addition, the fatty acid compositions of C. mutica held in aquaria and either fed the microalga, Dunaliella tertiolecta, or the diatom, Phaeodactylum tricornutum, for a period of 21 days were investigated. The fatty acid composition of the diatom and the microalgal diets was also examined. The results showed that C. mutica contained high levels of polyunsaturated fatty acids, particularly 20:5(n-3); other dominant fatty acids included 18:1(n-9), 22:6(n-3) and 16:0 (in decreasing order based on abundance). Significant differences in the fatty acid profiles between caprellids fed on the microalgae and the diatom diets and between C. mutica collected from the field sites were observed. These results provide evidence that lipid biomarkers can be successfully used to provide evidence of feeding strategy for C. mutica and that the flexibility observed in this strategy may play an important role in its invasion success. [ABSTRACT FROM AUTHOR]
- Published
- 2010
- Full Text
- View/download PDF
34. Competition between the non-native amphipod Caprella mutica and two native species of caprellids Pseudoprotella phasma and Caprella linearis.
- Author
-
Shucksmith, Richard, Cook, Elizabeth J., Hughes, David J., and Burrows, Michael T.
- Abstract
Competition plays an important role in invasion dynamics. According to Elton's biodiversity and invasibility hypothesis, non-native species must be competitively superior to the resident species in order to successfully invade. An invader that is ecologically similar to a native species may cause intense interspecific competition as they both require the same resource. Furthermore, an increase in the density of an invading competitor may enhance the intensity of the competitive interaction, however, this may be reduced if the inferior competitor has a refuge that reduces the amount of time it is in direct contact with the superior competitor. In laboratory-based competition experiments between the non-native caprellid Caprella mutica and two ecologically similar native caprellids Caprella linearis and Pseudoprotella phasma, C. mutica successfully displaced both species from homogeneous artificial habitat patches after 48 hours. Patches that contained a refuge reduced the number of C. linearis being displaced but only when C. mutica was at a low density. Potentially aggressive interactions between C. mutica and the native C. linearis may have caused C. linearis to be displaced from the patches and could have caused significantly higher mortality of C. linearis compared to the controls. This is the first study to show that the non-native C. mutica has the ability to displace ecologically similar native species when the resource space is limited and when the density of C. mutica was significantly (10 times) lower than the density of C. linearis. [ABSTRACT FROM PUBLISHER]
- Published
- 2009
- Full Text
- View/download PDF
35. Mitochondrial DNA reveals multiple Northern Hemisphere introductions of Caprella mutica (Crustacea, Amphipoda).
- Author
-
ASHTON, GAIL V., STEVENS, MARK I., HART, MARK C., GREEN, DAVID H., BURROWS, MICHAEL T., COOK, ELIZABETH J., and WILLIS, KATE J.
- Subjects
MITOCHONDRIAL DNA ,CRUSTACEA ,AMPHIPODA ,HABITATS ,PHYLOGEOGRAPHY - Abstract
Caprella mutica (Crustacea, Amphipoda) has been widely introduced to non-native regions in the last 40 years. Its native habitat is sub-boreal northeast Asia, but in the Northern Hemisphere, it is now found on both coasts of North America, and North Atlantic coastlines of Europe. Direct sequencing of mitochondrial DNA (cytochrome c oxidase subunit I gene) was used to compare genetic variation in native and non-native populations of C. mutica. These data were used to investigate the invasion history of C. mutica and to test potential source populations in Japan. High diversity (31 haplotypes from 49 individuals), but no phylogeographical structure, was identified in four populations in the putative native range. In contrast, non-native populations showed reduced genetic diversity (7 haplotypes from 249 individuals) and informative phylogeographical structure. Grouping of C. mutica populations into native, east Pacific, and Atlantic groups explained the most among-region variation (59%). This indicates independent introduction pathways for C. mutica to the Pacific and Atlantic coasts of North America. Two dominant haplotypes were identified in eastern and western Atlantic coastal populations, indicating several dispersal routes within the Atlantic. The analysis indicated that several introductions from multiple sources were likely to be responsible for the observed global distribution of C. mutica, but the pathways were least well defined among the Atlantic populations. The four sampled populations of C. mutica in Japan could not be identified as the direct source of the non-native populations examined in this study. The high diversity within the Japan populations indicates that the native range needs to be assessed at a far greater scale, both within and among populations, to accurately assess the source of the global spread of C. mutica. [ABSTRACT FROM AUTHOR]
- Published
- 2008
- Full Text
- View/download PDF
36. A review of reported seaweed diseases and pests in aquaculture in Asia.
- Author
-
Ward, Georgia M., Faisan, Joseph P., Cottier‐Cook, Elizabeth J., Gachon, Claire, Hurtado, Anicia Q., Lim, Phaik E., Matoju, Ivy, Msuya, Flower E., Bass, David, and Brodie, Juliet
- Subjects
SCIENTIFIC literature ,AGRICULTURAL pests ,RED algae ,MARINE algae ,AQUACULTURE ,MARINE plants - Abstract
Seaweeds have been used as a food for centuries in Asia and are increasingly exploited as a source for dietary supplements, animal feed, chemicals, and biofuels. In recent years, there has been an increase in the prevalence of diseases and pests in these aquaculture crops, with a subsequent reduction in their quantity and commercial value. In this article, we review diseases that have been reported in the scientific literature for species of red and brown seaweeds. We have focused on the major seaweed crops grown in Asia, where much of this production is centered. We also provide information on disease management and biosecurity and some observations on future directions. [ABSTRACT FROM AUTHOR]
- Published
- 2020
- Full Text
- View/download PDF
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