Top‐down control as important as nutrient enrichment for eutrophication effects in North Atlantic coastal ecosystems
Summary Seagrass and seaweed habitats constitute hotspots for diversity and ecosystem services in coastal ecosystems. These habitats are subject to anthropogenic pressures, of which eutrophication is one major stressor. Eutrophication favours fast‐growing ephemeral algae over perennial macroalgae an...
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Online Access: | http://dx.doi.org/10.1111/1365-2664.12654 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2F1365-2664.12654 https://onlinelibrary.wiley.com/doi/pdf/10.1111/1365-2664.12654 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/1365-2664.12654 https://besjournals.onlinelibrary.wiley.com/doi/pdf/10.1111/1365-2664.12654 |
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crwiley:10.1111/1365-2664.12654 2024-06-02T08:11:18+00:00 Top‐down control as important as nutrient enrichment for eutrophication effects in North Atlantic coastal ecosystems Östman, Örjan Eklöf, Johan Eriksson, Britas Klemens Olsson, Jens Moksnes, Per‐Olav Bergström, Ulf Cao, Yong Havs- och Vattenmyndigheten Svenska Forskningsrådet Formas 2016 http://dx.doi.org/10.1111/1365-2664.12654 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2F1365-2664.12654 https://onlinelibrary.wiley.com/doi/pdf/10.1111/1365-2664.12654 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/1365-2664.12654 https://besjournals.onlinelibrary.wiley.com/doi/pdf/10.1111/1365-2664.12654 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Applied Ecology volume 53, issue 4, page 1138-1147 ISSN 0021-8901 1365-2664 journal-article 2016 crwiley https://doi.org/10.1111/1365-2664.12654 2024-05-03T10:58:39Z Summary Seagrass and seaweed habitats constitute hotspots for diversity and ecosystem services in coastal ecosystems. These habitats are subject to anthropogenic pressures, of which eutrophication is one major stressor. Eutrophication favours fast‐growing ephemeral algae over perennial macroalgae and seagrasses, causing habitat degradation. However, changes in top‐down control, caused by, for example, overfishing, may also have negative impacts on such habitats by decreasing grazer control of ephemeral algae. Meanwhile, systematic analyses estimating top‐down effects of predator manipulations across a wide range of studies are missing, limiting the potential use of top‐down control measures in coastal management. Here, we review the literature on experiments that test top‐down and bottom‐up controls in seagrass Zostera marina and seaweed Fucus spp. food webs in the North Atlantic. Using meta‐analysis and meta‐regression, we compare effect sizes of consumer and nutrient manipulations on primary producers, grazers and mesopredators. Presence of mesopredators on average doubled the biomass of ephemeral algae through trophic cascades, mainly mediated via negative effects on amphipods and isopods. Of the grazers, gastropods had twice as strong a negative effect on ephemeral algae as amphipods/isopods, but responded weakly to both predators and fertilization. In accordance with theory, top‐down effects became stronger with eutrophication. Across studies, top‐down effects on ephemeral algae at all trophic levels are on par with eutrophication effects. However, the few studies manipulating piscivorous fish make estimates of their top‐down effects uncertain. Synthesis and applications . Consistently strong top‐down effects in coastal ecosystems call for an integrated ecosystem perspective. Management should consider measures to improve stocks of predatory fish and reduce mesopredators for restoration and conservation of essential seagrass and seaweed habitats, thereby increasing the long‐term viability of ecosystem ... Article in Journal/Newspaper North Atlantic Wiley Online Library Journal of Applied Ecology 53 4 1138 1147 |
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Open Polar |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Summary Seagrass and seaweed habitats constitute hotspots for diversity and ecosystem services in coastal ecosystems. These habitats are subject to anthropogenic pressures, of which eutrophication is one major stressor. Eutrophication favours fast‐growing ephemeral algae over perennial macroalgae and seagrasses, causing habitat degradation. However, changes in top‐down control, caused by, for example, overfishing, may also have negative impacts on such habitats by decreasing grazer control of ephemeral algae. Meanwhile, systematic analyses estimating top‐down effects of predator manipulations across a wide range of studies are missing, limiting the potential use of top‐down control measures in coastal management. Here, we review the literature on experiments that test top‐down and bottom‐up controls in seagrass Zostera marina and seaweed Fucus spp. food webs in the North Atlantic. Using meta‐analysis and meta‐regression, we compare effect sizes of consumer and nutrient manipulations on primary producers, grazers and mesopredators. Presence of mesopredators on average doubled the biomass of ephemeral algae through trophic cascades, mainly mediated via negative effects on amphipods and isopods. Of the grazers, gastropods had twice as strong a negative effect on ephemeral algae as amphipods/isopods, but responded weakly to both predators and fertilization. In accordance with theory, top‐down effects became stronger with eutrophication. Across studies, top‐down effects on ephemeral algae at all trophic levels are on par with eutrophication effects. However, the few studies manipulating piscivorous fish make estimates of their top‐down effects uncertain. Synthesis and applications . Consistently strong top‐down effects in coastal ecosystems call for an integrated ecosystem perspective. Management should consider measures to improve stocks of predatory fish and reduce mesopredators for restoration and conservation of essential seagrass and seaweed habitats, thereby increasing the long‐term viability of ecosystem ... |
author2 |
Cao, Yong Havs- och Vattenmyndigheten Svenska Forskningsrådet Formas |
format |
Article in Journal/Newspaper |
author |
Östman, Örjan Eklöf, Johan Eriksson, Britas Klemens Olsson, Jens Moksnes, Per‐Olav Bergström, Ulf |
spellingShingle |
Östman, Örjan Eklöf, Johan Eriksson, Britas Klemens Olsson, Jens Moksnes, Per‐Olav Bergström, Ulf Top‐down control as important as nutrient enrichment for eutrophication effects in North Atlantic coastal ecosystems |
author_facet |
Östman, Örjan Eklöf, Johan Eriksson, Britas Klemens Olsson, Jens Moksnes, Per‐Olav Bergström, Ulf |
author_sort |
Östman, Örjan |
title |
Top‐down control as important as nutrient enrichment for eutrophication effects in North Atlantic coastal ecosystems |
title_short |
Top‐down control as important as nutrient enrichment for eutrophication effects in North Atlantic coastal ecosystems |
title_full |
Top‐down control as important as nutrient enrichment for eutrophication effects in North Atlantic coastal ecosystems |
title_fullStr |
Top‐down control as important as nutrient enrichment for eutrophication effects in North Atlantic coastal ecosystems |
title_full_unstemmed |
Top‐down control as important as nutrient enrichment for eutrophication effects in North Atlantic coastal ecosystems |
title_sort |
top‐down control as important as nutrient enrichment for eutrophication effects in north atlantic coastal ecosystems |
publisher |
Wiley |
publishDate |
2016 |
url |
http://dx.doi.org/10.1111/1365-2664.12654 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2F1365-2664.12654 https://onlinelibrary.wiley.com/doi/pdf/10.1111/1365-2664.12654 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/1365-2664.12654 https://besjournals.onlinelibrary.wiley.com/doi/pdf/10.1111/1365-2664.12654 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Journal of Applied Ecology volume 53, issue 4, page 1138-1147 ISSN 0021-8901 1365-2664 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/1365-2664.12654 |
container_title |
Journal of Applied Ecology |
container_volume |
53 |
container_issue |
4 |
container_start_page |
1138 |
op_container_end_page |
1147 |
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1800757386824122368 |