High sensitivity of a keystone forage fish to elevated CO2 and temperature
Abstract Sand lances of the genus Ammodytes are keystone forage fish in coastal ecosystems across the northern hemisphere. Because they directly support populations of higher trophic organisms such as whales, seabirds or tuna, the current lack of empirical data and, therefore, understanding about th...
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croxfordunivpr:10.1093/conphys/coz084 2024-04-28T08:32:46+00:00 High sensitivity of a keystone forage fish to elevated CO2 and temperature Murray, Christopher S Wiley, David Baumann, Hannes Steven, Cooke Northeast Regional Sea Grant Consortium 2019 http://dx.doi.org/10.1093/conphys/coz084 http://academic.oup.com/conphys/article-pdf/7/1/coz084/31074927/coz084.pdf en eng Oxford University Press (OUP) http://creativecommons.org/licenses/by/4.0/ Conservation Physiology volume 7, issue 1 ISSN 2051-1434 Management, Monitoring, Policy and Law Nature and Landscape Conservation Ecological Modeling Physiology journal-article 2019 croxfordunivpr https://doi.org/10.1093/conphys/coz084 2024-04-02T08:07:26Z Abstract Sand lances of the genus Ammodytes are keystone forage fish in coastal ecosystems across the northern hemisphere. Because they directly support populations of higher trophic organisms such as whales, seabirds or tuna, the current lack of empirical data and, therefore, understanding about the climate sensitivity of sand lances represent a serious knowledge gap. Sand lances could be particularly susceptible to ocean warming and acidification because, in contrast to other tested fish species, they reproduce during boreal winter months, and their offspring develop slowly under relatively low and stable pCO2 conditions. Over the course of 2 years, we conducted factorial pCO2 × temperature exposure experiments on offspring of the northern sand lance Ammodytes dubius, a key forage species on the northwest Atlantic shelf. Wild, spawning-ripe adults were collected from Stellwagen Bank National Marine Sanctuary (Cape Cod, USA), and fertilized embryos were reared at three pCO2 conditions (400, 1000 and 2100 μatm) crossed with three temperatures (5, 7 and 10 ˚C). Exposure to future pCO2 conditions consistently resulted in severely reduced embryo survival. Sensitivity to elevated pCO2 was highest at 10 ˚C, resulting in up to an 89% reduction in hatching success between control and predicted end-of-century pCO2 conditions. Moreover, elevated pCO2 conditions delayed hatching, reduced remaining endogenous energy reserves at hatch and reduced embryonic growth. Our results suggest that the northern sand lance is exceptionally CO2-sensitive compared to other fish species. Whether other sand lance species with similar life history characteristics are equally CO2-sensitive is currently unknown. But the possibility is a conservation concern, because many boreal shelf ecosystems rely on sand lances and might therefore be more vulnerable to climate change than currently recognized. Our findings indicate that life history, spawning habitat, phenology and developmental rates mediate the divergent early life CO2 sensitivities ... Article in Journal/Newspaper Northwest Atlantic Oxford University Press Conservation Physiology 7 1 |
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Open Polar |
collection |
Oxford University Press |
op_collection_id |
croxfordunivpr |
language |
English |
topic |
Management, Monitoring, Policy and Law Nature and Landscape Conservation Ecological Modeling Physiology |
spellingShingle |
Management, Monitoring, Policy and Law Nature and Landscape Conservation Ecological Modeling Physiology Murray, Christopher S Wiley, David Baumann, Hannes High sensitivity of a keystone forage fish to elevated CO2 and temperature |
topic_facet |
Management, Monitoring, Policy and Law Nature and Landscape Conservation Ecological Modeling Physiology |
description |
Abstract Sand lances of the genus Ammodytes are keystone forage fish in coastal ecosystems across the northern hemisphere. Because they directly support populations of higher trophic organisms such as whales, seabirds or tuna, the current lack of empirical data and, therefore, understanding about the climate sensitivity of sand lances represent a serious knowledge gap. Sand lances could be particularly susceptible to ocean warming and acidification because, in contrast to other tested fish species, they reproduce during boreal winter months, and their offspring develop slowly under relatively low and stable pCO2 conditions. Over the course of 2 years, we conducted factorial pCO2 × temperature exposure experiments on offspring of the northern sand lance Ammodytes dubius, a key forage species on the northwest Atlantic shelf. Wild, spawning-ripe adults were collected from Stellwagen Bank National Marine Sanctuary (Cape Cod, USA), and fertilized embryos were reared at three pCO2 conditions (400, 1000 and 2100 μatm) crossed with three temperatures (5, 7 and 10 ˚C). Exposure to future pCO2 conditions consistently resulted in severely reduced embryo survival. Sensitivity to elevated pCO2 was highest at 10 ˚C, resulting in up to an 89% reduction in hatching success between control and predicted end-of-century pCO2 conditions. Moreover, elevated pCO2 conditions delayed hatching, reduced remaining endogenous energy reserves at hatch and reduced embryonic growth. Our results suggest that the northern sand lance is exceptionally CO2-sensitive compared to other fish species. Whether other sand lance species with similar life history characteristics are equally CO2-sensitive is currently unknown. But the possibility is a conservation concern, because many boreal shelf ecosystems rely on sand lances and might therefore be more vulnerable to climate change than currently recognized. Our findings indicate that life history, spawning habitat, phenology and developmental rates mediate the divergent early life CO2 sensitivities ... |
author2 |
Steven, Cooke Northeast Regional Sea Grant Consortium |
format |
Article in Journal/Newspaper |
author |
Murray, Christopher S Wiley, David Baumann, Hannes |
author_facet |
Murray, Christopher S Wiley, David Baumann, Hannes |
author_sort |
Murray, Christopher S |
title |
High sensitivity of a keystone forage fish to elevated CO2 and temperature |
title_short |
High sensitivity of a keystone forage fish to elevated CO2 and temperature |
title_full |
High sensitivity of a keystone forage fish to elevated CO2 and temperature |
title_fullStr |
High sensitivity of a keystone forage fish to elevated CO2 and temperature |
title_full_unstemmed |
High sensitivity of a keystone forage fish to elevated CO2 and temperature |
title_sort |
high sensitivity of a keystone forage fish to elevated co2 and temperature |
publisher |
Oxford University Press (OUP) |
publishDate |
2019 |
url |
http://dx.doi.org/10.1093/conphys/coz084 http://academic.oup.com/conphys/article-pdf/7/1/coz084/31074927/coz084.pdf |
genre |
Northwest Atlantic |
genre_facet |
Northwest Atlantic |
op_source |
Conservation Physiology volume 7, issue 1 ISSN 2051-1434 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1093/conphys/coz084 |
container_title |
Conservation Physiology |
container_volume |
7 |
container_issue |
1 |
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1797589841036181504 |