Effects of depth and overgrowth of ephemeral macroalgae on a remote subtidal NE Atlantic eelgrass (Zostera marina) community
We conducted a short-term field sampling complemented with time integrating stable isotope analysis to holistically investigate status and ecological interactions in a remote NE Atlantic Zostera marina meadow. We found high nutrient water concentrations, large biomass of fast-growing, ephemeral macr...
Published in: | Marine Pollution Bulletin |
---|---|
Main Authors: | , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2022
|
Subjects: | |
Online Access: | https://hdl.handle.net/11250/2997037 https://doi.org/10.1016/j.marpolbul.2022.113497 |
id |
ftimr:oai:imr.brage.unit.no:11250/2997037 |
---|---|
record_format |
openpolar |
spelling |
ftimr:oai:imr.brage.unit.no:11250/2997037 2023-05-15T16:19:07+02:00 Effects of depth and overgrowth of ephemeral macroalgae on a remote subtidal NE Atlantic eelgrass (Zostera marina) community Baden, Susanne Fredriksen, Stein Christie, Hartvig C Eriander, Louise Gustafsson, Camilla Holmer, Marianne Olesen, Birgit Thormar, Jonas Boström, Christoffer 2022 application/pdf https://hdl.handle.net/11250/2997037 https://doi.org/10.1016/j.marpolbul.2022.113497 eng eng Nordforsk: 9260 Marine Pollution Bulletin. 2022, 177 . urn:issn:0025-326X https://hdl.handle.net/11250/2997037 https://doi.org/10.1016/j.marpolbul.2022.113497 cristin:2008219 11 177 Marine Pollution Bulletin Peer reviewed Journal article 2022 ftimr https://doi.org/10.1016/j.marpolbul.2022.113497 2022-06-01T22:40:32Z We conducted a short-term field sampling complemented with time integrating stable isotope analysis to holistically investigate status and ecological interactions in a remote NE Atlantic Zostera marina meadow. We found high nutrient water concentrations, large biomass of fast-growing, ephemeral macroalgae, low abundance, and biodiversity of epifauna and a food web with thornback ray (Raja clavata) as intermediate and cod (Gadus morhua) as top predator. We observed no variation with increasing depth (3.5–11 m) except for decreasing shoot density and biomass of Zostera and macroalgae. Our results indicate that the Finnøya Zostera ecosystem is eutrophicated. During the past three to four decades, nutrients from aquaculture have steadily increased to reach 75% of anthropogenic input while the coastal top predator cod has decreased by 50%. We conclude that bottom-up regulation is a predominant driver of change since top-down regulation is generally weak in low density and exposed Zostera ecosystems such as Finnøya. publishedVersion Article in Journal/Newspaper Gadus morhua Institute for Marine Research: Brage IMR Finnøya ENVELOPE(6.063,6.063,62.516,62.516) Marine Pollution Bulletin 177 113497 |
institution |
Open Polar |
collection |
Institute for Marine Research: Brage IMR |
op_collection_id |
ftimr |
language |
English |
description |
We conducted a short-term field sampling complemented with time integrating stable isotope analysis to holistically investigate status and ecological interactions in a remote NE Atlantic Zostera marina meadow. We found high nutrient water concentrations, large biomass of fast-growing, ephemeral macroalgae, low abundance, and biodiversity of epifauna and a food web with thornback ray (Raja clavata) as intermediate and cod (Gadus morhua) as top predator. We observed no variation with increasing depth (3.5–11 m) except for decreasing shoot density and biomass of Zostera and macroalgae. Our results indicate that the Finnøya Zostera ecosystem is eutrophicated. During the past three to four decades, nutrients from aquaculture have steadily increased to reach 75% of anthropogenic input while the coastal top predator cod has decreased by 50%. We conclude that bottom-up regulation is a predominant driver of change since top-down regulation is generally weak in low density and exposed Zostera ecosystems such as Finnøya. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Baden, Susanne Fredriksen, Stein Christie, Hartvig C Eriander, Louise Gustafsson, Camilla Holmer, Marianne Olesen, Birgit Thormar, Jonas Boström, Christoffer |
spellingShingle |
Baden, Susanne Fredriksen, Stein Christie, Hartvig C Eriander, Louise Gustafsson, Camilla Holmer, Marianne Olesen, Birgit Thormar, Jonas Boström, Christoffer Effects of depth and overgrowth of ephemeral macroalgae on a remote subtidal NE Atlantic eelgrass (Zostera marina) community |
author_facet |
Baden, Susanne Fredriksen, Stein Christie, Hartvig C Eriander, Louise Gustafsson, Camilla Holmer, Marianne Olesen, Birgit Thormar, Jonas Boström, Christoffer |
author_sort |
Baden, Susanne |
title |
Effects of depth and overgrowth of ephemeral macroalgae on a remote subtidal NE Atlantic eelgrass (Zostera marina) community |
title_short |
Effects of depth and overgrowth of ephemeral macroalgae on a remote subtidal NE Atlantic eelgrass (Zostera marina) community |
title_full |
Effects of depth and overgrowth of ephemeral macroalgae on a remote subtidal NE Atlantic eelgrass (Zostera marina) community |
title_fullStr |
Effects of depth and overgrowth of ephemeral macroalgae on a remote subtidal NE Atlantic eelgrass (Zostera marina) community |
title_full_unstemmed |
Effects of depth and overgrowth of ephemeral macroalgae on a remote subtidal NE Atlantic eelgrass (Zostera marina) community |
title_sort |
effects of depth and overgrowth of ephemeral macroalgae on a remote subtidal ne atlantic eelgrass (zostera marina) community |
publishDate |
2022 |
url |
https://hdl.handle.net/11250/2997037 https://doi.org/10.1016/j.marpolbul.2022.113497 |
long_lat |
ENVELOPE(6.063,6.063,62.516,62.516) |
geographic |
Finnøya |
geographic_facet |
Finnøya |
genre |
Gadus morhua |
genre_facet |
Gadus morhua |
op_source |
11 177 Marine Pollution Bulletin |
op_relation |
Nordforsk: 9260 Marine Pollution Bulletin. 2022, 177 . urn:issn:0025-326X https://hdl.handle.net/11250/2997037 https://doi.org/10.1016/j.marpolbul.2022.113497 cristin:2008219 |
op_doi |
https://doi.org/10.1016/j.marpolbul.2022.113497 |
container_title |
Marine Pollution Bulletin |
container_volume |
177 |
container_start_page |
113497 |
_version_ |
1766005447934869504 |