Future Arctic: how will increasing coastal erosion shape nearshore planktonic food webs?
Abstract Arctic regimes. Currently, warming accelerates the erosion of permafrost coasts and the associated discharge of sediment, carbon, and nutrients into the Arctic Ocean. However, the impacts of coastal erosion on planktonic food webs remain understudied. We aimed to (1) understand how coastal...
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| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2025-02-01
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| Series: | Limnology and Oceanography Letters |
| Online Access: | https://doi.org/10.1002/lol2.10446 |
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| _version_ | 1832592155037663232 |
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| author | Gabriel A. Juma Cédric L. Meunier Emily M. Herstoff Anna M. Irrgang Michael Fritz Caroline Weber Hugues Lantuit Inga V. Kirstein Maarten Boersma |
| author_facet | Gabriel A. Juma Cédric L. Meunier Emily M. Herstoff Anna M. Irrgang Michael Fritz Caroline Weber Hugues Lantuit Inga V. Kirstein Maarten Boersma |
| author_sort | Gabriel A. Juma |
| collection | DOAJ |
| description | Abstract Arctic regimes. Currently, warming accelerates the erosion of permafrost coasts and the associated discharge of sediment, carbon, and nutrients into the Arctic Ocean. However, the impacts of coastal erosion on planktonic food webs remain understudied. We aimed to (1) understand how coastal erosion impacts nearshore carbon, nutrient, and light regimes; (2) investigate the effects on primary production and energy transfer; and (3) predict how increased erosion will impact the productivity of consumers, and the overall food web interactions. We found that sediment discharge increases turbidity (darkening). This darkening is expected to hamper phytoplankton productivity, while additional carbon input will provide bacteria with direct energy sources, and shift the balance between basal autotrophic and heterotrophic production. Since the heterotrophic pathway has a lower efficiency, its dominance might negatively affect mesozooplankton. Increased Arctic coastal erosion might therefore influence planktonic food webs by changing mechanisms of energy mobilization and transfer to higher trophic levels. |
| format | Article |
| id | doaj-art-7d94fdffffc34fc4a910051efdbcd141 |
| institution | Kabale University |
| issn | 2378-2242 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | Wiley |
| record_format | Article |
| series | Limnology and Oceanography Letters |
| spelling | doaj-art-7d94fdffffc34fc4a910051efdbcd1412025-01-21T13:51:57ZengWileyLimnology and Oceanography Letters2378-22422025-02-0110151710.1002/lol2.10446Future Arctic: how will increasing coastal erosion shape nearshore planktonic food webs?Gabriel A. Juma0Cédric L. Meunier1Emily M. Herstoff2Anna M. Irrgang3Michael Fritz4Caroline Weber5Hugues Lantuit6Inga V. Kirstein7Maarten Boersma8Alfred‐Wegener‐Institut, Helmholtz‐Zentrum für Polar‐ und Meeresforschung Biologische Anstalt Helgoland Helgoland GermanyAlfred‐Wegener‐Institut, Helmholtz‐Zentrum für Polar‐ und Meeresforschung Biologische Anstalt Helgoland Helgoland GermanyBiology Department St. Francis College Brooklyn New York USAAlfred‐Wegener‐Institut Helmholtz‐Zentrum für Polar‐ und Meeresforschung Potsdam GermanyAlfred‐Wegener‐Institut Helmholtz‐Zentrum für Polar‐ und Meeresforschung Potsdam GermanyAlfred‐Wegener‐Institut, Helmholtz‐Zentrum für Polar‐ und Meeresforschung Biologische Anstalt Helgoland Helgoland GermanyAlfred‐Wegener‐Institut Helmholtz‐Zentrum für Polar‐ und Meeresforschung Potsdam GermanyAlfred‐Wegener‐Institut, Helmholtz‐Zentrum für Polar‐ und Meeresforschung Biologische Anstalt Helgoland Helgoland GermanyAlfred‐Wegener‐Institut, Helmholtz‐Zentrum für Polar‐ und Meeresforschung Biologische Anstalt Helgoland Helgoland GermanyAbstract Arctic regimes. Currently, warming accelerates the erosion of permafrost coasts and the associated discharge of sediment, carbon, and nutrients into the Arctic Ocean. However, the impacts of coastal erosion on planktonic food webs remain understudied. We aimed to (1) understand how coastal erosion impacts nearshore carbon, nutrient, and light regimes; (2) investigate the effects on primary production and energy transfer; and (3) predict how increased erosion will impact the productivity of consumers, and the overall food web interactions. We found that sediment discharge increases turbidity (darkening). This darkening is expected to hamper phytoplankton productivity, while additional carbon input will provide bacteria with direct energy sources, and shift the balance between basal autotrophic and heterotrophic production. Since the heterotrophic pathway has a lower efficiency, its dominance might negatively affect mesozooplankton. Increased Arctic coastal erosion might therefore influence planktonic food webs by changing mechanisms of energy mobilization and transfer to higher trophic levels.https://doi.org/10.1002/lol2.10446 |
| spellingShingle | Gabriel A. Juma Cédric L. Meunier Emily M. Herstoff Anna M. Irrgang Michael Fritz Caroline Weber Hugues Lantuit Inga V. Kirstein Maarten Boersma Future Arctic: how will increasing coastal erosion shape nearshore planktonic food webs? Limnology and Oceanography Letters |
| title | Future Arctic: how will increasing coastal erosion shape nearshore planktonic food webs? |
| title_full | Future Arctic: how will increasing coastal erosion shape nearshore planktonic food webs? |
| title_fullStr | Future Arctic: how will increasing coastal erosion shape nearshore planktonic food webs? |
| title_full_unstemmed | Future Arctic: how will increasing coastal erosion shape nearshore planktonic food webs? |
| title_short | Future Arctic: how will increasing coastal erosion shape nearshore planktonic food webs? |
| title_sort | future arctic how will increasing coastal erosion shape nearshore planktonic food webs |
| url | https://doi.org/10.1002/lol2.10446 |
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