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The Limnology & Oceanography Bulletin provides a list of the top three accessed articles from each issue of Limnology and Oceanography in the fourth quarter of 2023. The articles cover a range of topics including the dependency of Arctic zooplankton on food sources, the effects of temperature and microplastic exposure on freshwater fish, and the impact of nutrient load reductions on phytoplankton biomass and diversity. Other articles explore the role of hydrology in carbon export in a tropical river, cetacean-mediated nitrogen transport in the ocean, and the relationship between primary production and respiration in rivers. The final articles investigate organic sulfur in Lake Superior, the response of lake metabolism to catchment inputs, and the gene expression of cyanobacteria in response to elevated temperatures. The authors are commended for their contributions to the field of aquatic sciences. [Extracted from the article]

The management and conservation of fisheries and aquatic resources are inherently applied activities. Therefore, when knowledge generated from research and monitoring, or knowledge that is held by practitioners and other actors (e.g., Indigenous elders, fishers), fails to inform those applied decisions, the persistent gap between knowledge and action is reinforced (i.e., the knowledge–action gap). In the healthcare realm, there has been immense growth in implementation science over the past decade or so with a goal of understanding and bridging the gap between knowledge and action and delivering on evidence‐based decision making. Yet, within fisheries and aquatic sciences, the concept of implementation science has not received the same level of attention. We posit, therefore, that there is an urgent need to embrace implementation science to enhance fisheries and aquatic management and conservation. In this paper, we seek to describe what implementation science is and what it has to offer to the fisheries and aquatic science and management communities. For our context, we define implementation science as the scientific study of processes and approaches to promote the systematic uptake of research and monitoring findings and other evidence‐based practices into routine practice and decision making to improve the effectiveness of fisheries management and aquatic conservation. We explore various frameworks for implementation science and consider them in the context of fisheries and aquatic science. Although there are barriers and challenges to putting implementation science into practice (e.g., lack of capacity for such work, lack of time to engage in reflection, lack of funding), there is also much in the way of opportunity and several examples of where such efforts are already underway. We conclude by highlighting the research needs related to implementation science in the fisheries and aquatic science realm that span methodological approaches, albeit a common theme is the need to involve practitioners (and other relevant actors) in the research. By introducing the concept and discipline of implementation science to the fisheries and aquatic science community, our hope is that we will inspire individuals and organizations to learn more about how implementation science can help deliver on the promise of evidence‐based management and decision making and narrow the gap between research and practice. [ABSTRACT FROM AUTHOR]

Lee, J., 2024. The International Conference on Aquatic Science & Technology (i-CoAST): Reflecting on the first 10 years with the Journal of Coastal Research (JCR) and the Coastal Education & Research Foundation (CERF). Journal of Coastal Research, 40(1), 228–234. Charlotte (North Carolina), ISSN 0749-0208. The year 2023 will mark the 10th anniversary of the first international Conference on Aquatic Science & Technology (i-CoAST). It's hard to believe that so much time has passed since the conference's inception, and it seems like only yesterday that we were working so hard to make it all happen. The continued development and continuation of i-CoAST as a multidisciplinary conference on coastal and marine issues would not have been possible without the dedicated support of the Journal of Coastal Research (JCR) and the Coastal Education & Research Foundation (CERF), and we would like to sincerely thank our friend and Editor-in-Chief of the JCR, Dr. Christopher Makowski, for always supporting and encouraging us. We hope this essay tells the fascinating story of how i-CoAST started, where we've been, and where we're headed. I know I couldn't have done any of this without the trust and support of my friends and colleagues, who have always supported i-CoAST, so I'd like to take this opportunity to thank them all. [ABSTRACT FROM AUTHOR]

Fisheries science and practice are challenging and require learning, thinking, and sharing across boundaries. The idea of boundary crossing can be described as some form of multiple disciplinarity (e.g. interdisciplinarity, transdisciplinarity), yet that inherently implies that the boundaries crossed are purely disciplinary in nature. After working across various other boundaries (i.e. realms, regions, disciplines, sectors, domains, and knowledge systems) for most of our educational journeys and professional careers, we reflect on our lived experiences with a focus on identifying the benefits and challenges of engaging in different types of boundary crossing. We submit that our personal and professional lives have been enriched by stepping outside of our immediate comfort zones and expertise (i.e. fish ecology) and engaging in active listening and learning with colleagues in other disciplines (i.e. various social sciences) and with stakeholders and policymakers. We have learned much from working across boundaries and encourage others, especially early career professionals, to do the same. What may superficially appear to be a bridge too far may in fact provide novel ways of thinking about a given issue or topic that generates actionable science for sustainable fisheries management and conservation. Many of the projects that we consider to be our greatest successes represent ones that involved boundary crossing, examples of which we provide in this essay. There is a need to prepare the next generation of problem solvers for engaging in boundary crossing and celebrating examples of where such efforts have led to meaningful advances in fisheries science and practice. Ensuring that institutional and cultural barriers that may constrain boundary crossing are addressed while also supporting those doing such work will be key to address the many fisheries and aquatic science challenges of today and tomorrow in both marine and freshwater systems. [ABSTRACT FROM AUTHOR]

The article announces a special issue of the journal Limnology & Oceanography Bulletin focused on the use of mesocosms in aquatic studies. Mesocosms are experimental systems that bridge the gap between laboratory studies and in situ observations, allowing researchers to study the response of aquatic communities to environmental changes. The special issue welcomes submissions from various fields of oceanography and limnology, with a focus on advancing the understanding of key aquatic processes. The issue will be published in Fall 2025 and will include previously published papers relevant to the topic. [Extracted from the article]

Measurements of dissolved organic carbon (DOC), nitrogen (DON), and phosphorus (DOP) concentrations are used to characterize the dissolved organic matter (DOM) pool and are important components of biogeochemical cycling in the coastal ocean. Here, we present the first edition of a global database (CoastDOM v1; available at 10.1594/PANGAEA.964012, Lønborg et al., 2023) compiling previously published and unpublished measurements of DOC, DON, and DOP in coastal waters. These data are complemented by hydrographic data such as temperature and salinity and, to the extent possible, other biogeochemical variables (e.g. chlorophyll a , inorganic nutrients) and the inorganic carbon system (e.g. dissolved inorganic carbon and total alkalinity). Overall, CoastDOM v1 includes observations of concentrations from all continents. However, most data were collected in the Northern Hemisphere, with a clear gap in DOM measurements from the Southern Hemisphere. The data included were collected from 1978 to 2022 and consist of 62 338 data points for DOC, 20 356 for DON, and 13 533 for DOP. The number of measurements decreases progressively in the sequence DOC > DON > DOP, reflecting both differences in the maturity of the analytical methods and the greater focus on carbon cycling by the aquatic science community. The global database shows that the average DOC concentration in coastal waters (average ± standard deviation (SD): 182±314 µmolCL-1 ; median: 103 µmolCL-1) is 13-fold higher than the average coastal DON concentration (13.6±30.4 µmolNL-1 ; median: 8.0 µmolNL-1), which is itself 39-fold higher than the average coastal DOP concentration (0.34±1.11 µmolPL-1 ; median: 0.18 µmolPL-1). This dataset will be useful for identifying global spatial and temporal patterns in DOM and will help facilitate the reuse of DOC, DON, and DOP data in studies aimed at better characterizing local biogeochemical processes; closing nutrient budgets; estimating carbon, nitrogen, and phosphorous pools; and establishing a baseline for modelling future changes in coastal waters. [ABSTRACT FROM AUTHOR]

Studies devised through the fusion of cleaning and environmental sciences can be summarized as follows: new cleaning kinetics applying a probability density function and a surface chemical approach to the aquatic toxicity of surfactants. Cleaning power analysis using the probability density functional method combines conventional cleaning kinetics using a first-order reaction equation with a risk analysis method using a probability density function. It is possible to analyze the cleaning mechanism from the obtained parameter values. It is also possible to determine whether the interaction between two different cleaning elements corresponds to a synergistic, additive, or offsetting effect. Studies on the aquatic toxicity of surfactants have focused on the surface tension at which surfactants exhibit toxicity, changes in toxicity due to water quality, and biodegradation, and the presence of adsorbed substances have been identified. [ABSTRACT FROM AUTHOR]