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Theme Session H - Impacts of human activities and pressures on seafloor ecosystems: past, present and future
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This ICES conference session compiled abstracts on the impacts of human activities on seafloor ecosystems, including contributions on microplastic pollution of benthic habitats. The session addressed both past and present pressures and future trajectories for seafloor ecosystem health.
ICES Annual Science Conference Book of abstracts of theme session H: Impacts of human activities and pressures on seafloor ecosystems: past, present and future Conveners: Bryony Caswell (United Kingdom), Jan Vanaverbeke (Belgium), Julian Burgos (Iceland) CM 41: Microplastics, monitoring and the Dublin Bay prawn CM 56: Transboundary marine spatial planning in YSLME requires for cumulative effects assessment at ecosystem scales CM 57: Microplastic ingestion by marine invertebrates – Does it depend on feeding mode? CM 102: The importance of habitat heterogeneity for the diversity of benthic communities from the Western Mediterranean continental shelf CM 109: Sharing benthos: the interplay of human and ecological activities as compounding benthic pressures in light of rebuilding fish stocks in the NW Atlantic CM 134: A unique approach to assessing the impact of low-frequency noise and magnetic fields generated by offshore wind farms on swimming, orientation and dispersal of fish larvae CM 139: Bioregionalisation highlights the presence of vulnerable species in historically harvested soft-bottom grounds CM 224: Ecosystem structure of benthic communities in eastern and western Weddell Sea, Antarctica CM 260: Seabed litter from fisheries off the Murcia coast (SE Spain) CM 275: Assessment of trawling impacts on seafloor habitats in the Eastern Mediterranean CM 330: Pots as sustainable and alternative fishing gears to reduce fisheries’ impacts on ecosystems CM 346: Seagrass meadows as refugia for sea urchin larvae under ocean acidification CM 378: Vulnerabilities of a socio-ecological system under multiple scenarios CM 379: Effects of a seamount protected area on demersal fishes CM 391: Are oil and gas platform foundations affecting marine demersal ecosystems? The Atlantic cod might provide an answer CM 403: Estimating the seabed impacts of Nephrops norvegicus trawl and creel fisheries around Scotland, UK CM 413: What can three decades of experimental manipulation teach us about the ecological functioning of soft sediment habitats? CM 426: Evaluation and quantification of shell damage and related survivability in the Italian striped venus clam (Chamelea gallina) hydraulic dredging fisheries CM 462: First records of fishing gear incrustated in corals and gorgonians from the Atlantic coast of Portugal CM 518: The spatiotemporal trends of bottom fishery interaction with Benthic Broad Habitats: the case study of the Bay of Biscay CM 519: Disentangling the terrestrial inputs into a benthic fjord system: a multi-marker approach CM 520: Deep sea microplastic pollution in sediments extends out to Northeast Atlantic Ocean margins CM 521: Fisheries and Offshore Wind: Synthesis of the Science 1 & 2 CM 542: Land-based human impacts on nearshore kelp forest ecosystems
More Papers Like This
Micro- and mesoplastics in the northern Baltic Sea : their fate in the seafloor and effects on benthic fauna
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This dissertation examined micro- and mesoplastics in the northern Baltic Sea seafloor and tested their effects on bottom-dwelling organisms. Microplastics accumulated in fine-grained seafloor sediments, and exposure experiments showed negative effects on benthic invertebrates at realistic concentrations. The findings contribute to understanding how plastic pollution is affecting benthic ecosystems in a major semi-enclosed sea with significant human fishing and tourism activity.
Microplastics Baseline Surveys at the Water Surface and in Sediments of the North-East Atlantic
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Researchers measured microplastic concentrations at the sea surface and in sediments across the southern North Sea and northwestern Europe, finding highly variable but widespread contamination. Sediments contained far higher concentrations than surface waters, confirming that the seafloor acts as a major sink for microplastic pollution.
Marine Litter, Plastic, and Microplastics on the Seafloor
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This review examines marine litter, plastic debris, and microplastics accumulating on the seafloor from intertidal zones to hadal depths, emphasizing that the seafloor is a major long-term sink for plastics denser than seawater. It discusses monitoring challenges across different seabed types and highlights abandoned fishing gear as a key seafloor litter component that entangles marine fauna.
New tools to characterize the impact of microplastics on bathypelagic microbes at lab scale
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New tools were developed to characterize the impact of microplastics on microbes and other organisms in the bathypelagic (deep ocean) zone. The work addresses the poorly understood fate and effects of microplastics in deep-sea ecosystems far from surface pollution sources.
A large-scale study of microplastic abundance in sediment cores from the UK continental shelf and slope
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Microplastic abundance was surveyed in sediment cores from three areas of the UK continental shelf, establishing a baseline pollution profile across contrasting coastal environments. Concentrations varied considerably by location and depth, with the data providing a foundation for future risk assessments of seafloor contamination.
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