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341 results on '"Lamers, Leon P.M."'

16. Sludge degradation, nutrient removal and reduction of greenhouse gas emission by a Chironomus-Azolla wastewater treatment cascade

Author

Hendriks, Lisanne, van der Meer, Tom V., Kraak, Michiel H.S., Verdonschot, Piet F.M., Smolders, Alfons J.P., Lamers, Leon P.M., Veraart, Annelies J., Hendriks, Lisanne, van der Meer, Tom V., Kraak, Michiel H.S., Verdonschot, Piet F.M., Smolders, Alfons J.P., Lamers, Leon P.M., and Veraart, Annelies J.

Abstract

Wastewater treatment plants (WWTPs) are a point source of nutrients, emit greenhouse gases (GHGs), and produce large volumes of excess sludge. The use of aquatic organisms may be an alternative to the technical post-treatment of WWTP effluent, as they play an important role in nutrient dynamics and carbon balance in natural ecosystems. The aim of this study was therefore to assess the performance of an experimental wastewater-treatment cascade of bioturbating macroinvertebrates and floating plants in terms of sludge degradation, nutrient removal and lowering GHG emission. To this end, a full-factorial experiment was designed, using a recirculating cascade with a WWTP sludge compartment with or without bioturbating Chironomus riparius larvae, and an effluent container with or without the floating plant Azolla filiculoides, resulting in four treatments. To calculate the nitrogen (N), phosphorus (P) and carbon (C) mass balance of this system, the N, P and C concentrations in the effluent, biomass production, and sludge degradation, as well as the N, P and C content of all compartments in the cascade were measured during the 26-day experiment. The presence of Chironomus led to an increased sludge degradation of 44% compared to 25% in the control, a 1.4 times decreased transport of P from the sludge and a 2.4 times increased transport of N out of the sludge, either into Chironomus biomass or into the water column. Furthermore, Chironomus activity decreased methane emissions by 92%. The presence of Azolla resulted in a 15% lower P concentration in the effluent than in the control treatment, and a CO2 uptake of 1.13 kg ha-1 day-1. These additive effects of Chironomus and Azolla resulted in an almost two times higher sludge degradation, and an almost two times lower P concentration in the effluent. This is the first study that shows that a bio-based cascade can strongly reduce GHG and P emissions simultaneously during the combined polishing of wastewater sludge and effluent

Published
2024

27. Biodegradable artificial reefs enhance food web complexity and biodiversity in an intertidal soft-sediment ecosystem

Author

Nauta, Janne, Christianen, Marjolijn J.A., Temmink, Ralph J.M., Fivash, Gregory S.S., Marin-Diaz, Beatriz, Reijers, V.C., Borst, Annieke C.W., Cruijsen, P.M.J.M., Lamers, Leon P.M., Olff, Han, Govers, L.L., Nauta, Janne, Christianen, Marjolijn J.A., Temmink, Ralph J.M., Fivash, Gregory S.S., Marin-Diaz, Beatriz, Reijers, V.C., Borst, Annieke C.W., Cruijsen, P.M.J.M., Lamers, Leon P.M., Olff, Han, and Govers, L.L.

Abstract

Contains fulltext : 290193.pdf (Publisher’s version ) (Open Access)

Published
2023

28. Wetscapes: Restoring and maintaining peatland landscapes for sustainable futures

Author

Temmink, R.J.M., Robroek, Bjorn J.M., Dijk, G. van, Koks, A.H.W., Käärmelahti, S.A., Barthelmes, Alexandra, Steele, Magdalena N., Fritz, C., Lamers, Leon P.M., Smolders, A.J.P., Temmink, R.J.M., Robroek, Bjorn J.M., Dijk, G. van, Koks, A.H.W., Käärmelahti, S.A., Barthelmes, Alexandra, Steele, Magdalena N., Fritz, C., Lamers, Leon P.M., and Smolders, A.J.P.

Abstract

09 juni 2023, Item does not contain fulltext

Published
2023

29. Restoring organic matter, carbon and nutrient accumulation in degraded peatlands: 10 years Sphagnum paludiculture

Author

Temmink, R.J.M., Vroom, R.J.E., Dijk, G. van, Kaarmelahti, Sannimari A., Koks, A.H.W., Joosten, H., Lamers, Leon P.M., Smolders, Alfons J.P., Fritz, C., Temmink, R.J.M., Vroom, R.J.E., Dijk, G. van, Kaarmelahti, Sannimari A., Koks, A.H.W., Joosten, H., Lamers, Leon P.M., Smolders, Alfons J.P., and Fritz, C.

Abstract

11 augustus 2023, Contains fulltext : 295490.pdf (Publisher’s version ) (Open Access)

Published
2023

32. Salinity-Induced Extinction of Zostera marina in Lake Grevelingen? How Strong Habitat Modification May Require Introduction of a Suitable Ecotype

Author

Van Katwijk, Marieke M., Cronau, Rens J.T., Lamers, Leon P.M., Kamermans, Pauline, van Tussenbroek, Brigitta I., De Jong, Dick J., Van Katwijk, Marieke M., Cronau, Rens J.T., Lamers, Leon P.M., Kamermans, Pauline, van Tussenbroek, Brigitta I., and De Jong, Dick J.

Abstract

During the 1980s–1990s, 4600 hectares of the seagrass Zostera marina were permanently lost from Lake Grevelingen (the Netherlands), and restoration is planned. In 1971, the lake was fully marine (salinity 30), and seagrass covered 1300 hectares. After closure in that year, the lake gradually became brackish (salinity of 23 by 1978), and the meadows expanded to 4600 hectares. However, with the creation of a sluice connection to the sea in 1978, the lake returned to marine conditions and a fatal decline initiated. We revisit traditionally suggested causes of the disappearance of the seagrass, finding them unsatisfactory. We hypothesize that during the lower salinity conditions from 1971 to 1978, selection of low-salinity genotypes occurred, and these genotypes were not adapted to returning marine conditions. This hypothesis is no longer testable through genetic analysis in Lake Grevelingen but is supported by previously unpublished experiments that found a lack of seed germination at even moderately high salinity for the now extinct population. Such processes could be relevant for, and tested in, environmentally modified water systems worldwide, particularly when isolated. Based on our assessment, the abiotic environment of Lake Grevelingen seems suitable for Z. marina restoration using a donor from a high salinity environment.

Published
2023

41. Life cycle informed restoration: Engineering settlement substrate material characteristics and structural complexity for reef formation

Author

Temmink, Ralph J.M., Angelini, Christine, Fivash, Gregory S., Swart, Laura, Nouta, Reinder, Teunis, Malenthe, Lengkeek, Wouter, Didderen, Karin, Lamers, Leon P.M., Bouma, Tjeerd J., van der Heide, Tjisse, Environmental Sciences, Global Ecohydrology and Sustainability, Proceskunde, FG Kusten, Rivieren, Global Change, Van der Heide group, Conservation Ecology Group, Environmental Sciences, Global Ecohydrology and Sustainability, Proceskunde, and FG Kusten, Rivieren, Global Change

Subjects
oyster, geography, habitat modification, geography.geographical_feature_category, ecosystem engineers, Ecology, business.industry, Settlement (structural), fungi, mussel, Environmental resource management, post-settlement survival, Aquatic Ecology, Substrate (biology), coastal restoration, Coastal restoration, bivalve, Bivalvia, Structural complexity, Environmental science, business, Reef
Abstract

Ecosystems are degrading world-wide, with severe ecological and economic consequences. Restoration is becoming an important tool to regain ecosystem services and preserve biodiversity. However, in harsh ecosystems dominated by habitat-modifying organisms, restoration is often expensive and failure prone. Establishment of such habitat modifiers often hinges on self-facilitation feedbacks generated by traits that emerge when individuals aggregate, causing density- or patch size-dependent establishment thresholds. To overcome these thresholds, adult or juvenile habitat-forming species are often transplanted in clumped designs, or stress-mitigating structures are deployed. However, current restoration approaches focus on introducing or facilitating a single life stage, while many habitat modifiers experience multiple bottlenecks throughout their life as they transition through sequential life stages. Here, we define and experimentally test ‘life cycle informed restoration’, a restoration concept that focuses on overcoming multiple bottlenecks throughout the target species’ lifetime. To provide proof of concept, and show its general applicability, we carried out complementary experiments in intertidal soft-sediment systems in Florida and the Netherlands where oysters and mussels act as reef-building habitat modifiers. We used biodegradable structures designed to facilitate bivalve reef recovery by both stimulating settlement with hard and fibrous substrates and post-settlement survival by reducing predation. Our trans-Atlantic experiments demonstrate that these structures enabled bivalve reef formation by: (a) facilitating larval recruitment via species-specific settlement substrates, and (b) enhancing post-settlement survival by lowering predation. In the Netherlands, structures with coir rope most strongly facilitated mussels by providing fibrous settlement substrate, and predation-lowering spatially complex hard attachment substrate. In Florida, oysters were greatly facilitated by hard substrates, while coir rope proved unbeneficial. Synthesis and applications. Our findings demonstrate that artificial biodegradable reefs can enhance bivalve reef restoration across the Atlantic by mimicking emergent traits that ameliorate multiple bottlenecks over the reef-forming organism’ life cycle. This highlights the potential of our approach as a cost-effective and practical tool for nature managers to restore systems dominated by habitat modifiers whose natural recovery is hampered by multiple life stage-dependent bottlenecks. Therefore, investment in understanding how to achieve life cycle informed restoration on larger scales and whether the method it is applicable to restore other ecosystems is now required.

Published
2021
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43. Herbivore exclusion and active planting stimulate reed marsh development on a newly constructed archipelago

Author

Temmink, R.J.M., Akker, Marloes van den, Leeuwen, Casper H. A. van, Thöle, Y., Olff, H., Reijers, V.C., Weideveld, S.T.J., Robroek, B.J.M., Lamers, Leon P.M., Bakker, E.S., Temmink, R.J.M., Akker, Marloes van den, Leeuwen, Casper H. A. van, Thöle, Y., Olff, H., Reijers, V.C., Weideveld, S.T.J., Robroek, B.J.M., Lamers, Leon P.M., and Bakker, E.S.

Abstract

Contains fulltext : 246821.pdf (Publisher’s version ) (Open Access)

Published
2022

44. Recovering wetland biogeomorphic feedbacks to restore the world’s biotic carbon hotspots

Author

Temmink, Ralph J.M., Lamers, Leon P.M., Angelini, Christine, Bouma, Tjeerd J., Fritz, Christian, Koppel, J. van de, Lexmond, R.E., Rietkerk, M., Silliman, B.R., Joosten, H., Heide, Tjisse van der, Temmink, Ralph J.M., Lamers, Leon P.M., Angelini, Christine, Bouma, Tjeerd J., Fritz, Christian, Koppel, J. van de, Lexmond, R.E., Rietkerk, M., Silliman, B.R., Joosten, H., and Heide, Tjisse van der

Abstract

Contains fulltext : 249585.pdf (Publisher’s version ) (Closed access)

Published
2022

45. Initiating and upscaling mussel reef establishment with life cycle informed restoration: Successes and future challenges

Author

Spatial Ecology and Global Change, Sub Subatomic Physics (SAP), Proceskunde, Coastal dynamics, Fluvial systems and Global change, Temmink, Ralph J.M., Fivash, Gregory S., Govers, Laura L., Nauta, Janne, Marin-Diaz, Beatriz, Cruijsen, Peter M.J.M., Didderen, Karin, Penning, Emma, Olff, Han, Heusinkveld, Jannes H.T., Lamers, Leon P.M., Lengkeek, Wouter, Christianen, Marjolijn J.A., Reijers, Valérie C., Bouma, Tjeerd J., van der Heide, Tjisse, Spatial Ecology and Global Change, Sub Subatomic Physics (SAP), Proceskunde, Coastal dynamics, Fluvial systems and Global change, Temmink, Ralph J.M., Fivash, Gregory S., Govers, Laura L., Nauta, Janne, Marin-Diaz, Beatriz, Cruijsen, Peter M.J.M., Didderen, Karin, Penning, Emma, Olff, Han, Heusinkveld, Jannes H.T., Lamers, Leon P.M., Lengkeek, Wouter, Christianen, Marjolijn J.A., Reijers, Valérie C., Bouma, Tjeerd J., and van der Heide, Tjisse

Published
2022

46. Herbivore exclusion and active planting stimulate reed marsh development on a newly constructed archipelago

Author

Global Ecohydrology and Sustainability, Proceskunde, Environmental Sciences, FG Kusten, Rivieren, Global Change, Temmink, Ralph J.M., van den Akker, Marloes, van Leeuwen, Casper H.A., Thöle, Yvonne, Olff, Han, Reijers, Valérie C., Weideveld, Stefan T.J., Robroek, Bjorn J.M., Lamers, Leon P.M., Bakker, Elisabeth S., Global Ecohydrology and Sustainability, Proceskunde, Environmental Sciences, FG Kusten, Rivieren, Global Change, Temmink, Ralph J.M., van den Akker, Marloes, van Leeuwen, Casper H.A., Thöle, Yvonne, Olff, Han, Reijers, Valérie C., Weideveld, Stefan T.J., Robroek, Bjorn J.M., Lamers, Leon P.M., and Bakker, Elisabeth S.

Published
2022

48. Temperature response of aquatic greenhouse gas emissions differs between dominant plant types

Author

Aben, R.C.H., Velthuis, Mandy, Kazanjian, Garabet, Frenken, Thijs, Peeters, Edwin T. H. M., Waal, Dedmer B. Van de, Hilt, Sabine, Senerpont Domis, Lisette N de, Lamers, Leon P.M., Kosten, Sarian, Aben, R.C.H., Velthuis, Mandy, Kazanjian, Garabet, Frenken, Thijs, Peeters, Edwin T. H. M., Waal, Dedmer B. Van de, Hilt, Sabine, Senerpont Domis, Lisette N de, Lamers, Leon P.M., and Kosten, Sarian

Abstract

Contains fulltext : 283611.pdf (Publisher’s version ) (Open Access)

Published
2022

49. Ecosysteemherstel door vijf jaar oude Marker Wadden

Author

van Leeuwen, Casper, Temmink, Ralph J.M., Jin, H., Kahlert, Yvonne, Robroek, Bjorn, Berg, Matty P., Lamers, Leon P.M., van den Akker, Marloes, Posthoorn, Roel, Boosten, Annemiek, Olff, Han, Bakker, Liesbeth, van Leeuwen, Casper, Temmink, Ralph J.M., Jin, H., Kahlert, Yvonne, Robroek, Bjorn, Berg, Matty P., Lamers, Leon P.M., van den Akker, Marloes, Posthoorn, Roel, Boosten, Annemiek, Olff, Han, and Bakker, Liesbeth

Abstract

De ecologische kwaliteit van het Markermeer is sinds de aanleg van de Houtribdijk sterk achteruitgegaan. Die Houtribdijk weer weghalen is geen optie, al was het maar omwille van de ‘ecosysteemdiensten’, zoals de waterhuishouding. In 2016 is een alternatieve aanpak gekozen: uit de zachte sedimenten van het kunstmatige Markermeer is een archipel van vijf eilanden aangelegd: Marker Wadden. Het Markermeer kreeg daarmee weer geleidelijke land-waterovergangen, verschillende waterdiepten en beschutting tegen golven en sedimentophoping. Dit artikel beschrijft de eerste resultaten. Het voedselweb wordt ‘van onderaf’ hersteld door de primaire productie via algen te verbeteren, waar ook hogere planten en dieren van profiteren. Dit project illustreert hoe herstel van ecosystemen in meren kan worden bereikt met behoud van bestaande ecosysteemdiensten.

Published
2022

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