In situ growth and bioerosion rates of Lophelia pertusain a Norwegian fjord and open shelf cold-water coral habitat
Coral reef resilience depends on the balance between carbonate precipitation, leading to reef growth, and carbonate degradation, for example, through bioerosion. Changes in environmental conditions are likely to affect the two processes differently, thereby shifting the balance between reef growth a...
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crpeerj:10.7717/peerj.7586 2024-06-02T08:10:11+00:00 In situ growth and bioerosion rates of Lophelia pertusain a Norwegian fjord and open shelf cold-water coral habitat Büscher, Janina V. Wisshak, Max Form, Armin U. Titschack, Jürgen Nachtigall, Kerstin Riebesell, Ulf German coordinated project Biological Impacts of Ocean Acidification BIOACID II Federal Ministry of Education and Research 2019 http://dx.doi.org/10.7717/peerj.7586 https://peerj.com/articles/7586.pdf https://peerj.com/articles/7586.xml https://peerj.com/articles/7586.html en eng PeerJ https://creativecommons.org/licenses/by/4.0/ PeerJ volume 7, page e7586 ISSN 2167-8359 journal-article 2019 crpeerj https://doi.org/10.7717/peerj.7586 2024-05-07T14:13:15Z Coral reef resilience depends on the balance between carbonate precipitation, leading to reef growth, and carbonate degradation, for example, through bioerosion. Changes in environmental conditions are likely to affect the two processes differently, thereby shifting the balance between reef growth and degradation. In cold-water corals estimates of accretion-erosion processes in their natural habitat are scarce and solely live coral growth rates were studied with regard to future environmental changes in the laboratory so far, limiting our ability to assess the potential of cold-water coral reef ecosystems to cope with environmental changes. In the present study, growth rates of the two predominant colour morphotypes of live Lophelia pertusa as well as bioerosion rates of dead coral framework were assessed in different environmental settings in Norwegian cold-water coral reefs in a 1-year in situ experiment. Net growth (in weight gain and linear extension) of live L. pertusa was in the lower range of previous estimates and did not significantly differ between inshore (fjord) and offshore (open shelf) habitats. However, slightly higher net growth rates were obtained inshore. Bioerosion rates were significantly higher on-reef in the fjord compared to off-reef deployments in- and offshore. Besides, on-reef coral fragments yielded a broader range of individual growth and bioerosion rates, indicating higher turnover in live reef structures than off-reef with regard to accretion–bioerosion processes. Moreover, if the higher variation in growth rates represents a greater variance in (genetic) adaptations to natural environmental variability in the fjord, inshore reefs could possibly benefit under future ocean change compared to offshore reefs. Although not significantly different due to high variances between replicates, growth rates of orange branches were consistently higher at all sites, while mortality was statistically significantly lower, potentially indicating higher stress-resistance than the less pigmented ... Article in Journal/Newspaper Lophelia pertusa PeerJ Publishing PeerJ 7 e7586 |
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Open Polar |
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language |
English |
description |
Coral reef resilience depends on the balance between carbonate precipitation, leading to reef growth, and carbonate degradation, for example, through bioerosion. Changes in environmental conditions are likely to affect the two processes differently, thereby shifting the balance between reef growth and degradation. In cold-water corals estimates of accretion-erosion processes in their natural habitat are scarce and solely live coral growth rates were studied with regard to future environmental changes in the laboratory so far, limiting our ability to assess the potential of cold-water coral reef ecosystems to cope with environmental changes. In the present study, growth rates of the two predominant colour morphotypes of live Lophelia pertusa as well as bioerosion rates of dead coral framework were assessed in different environmental settings in Norwegian cold-water coral reefs in a 1-year in situ experiment. Net growth (in weight gain and linear extension) of live L. pertusa was in the lower range of previous estimates and did not significantly differ between inshore (fjord) and offshore (open shelf) habitats. However, slightly higher net growth rates were obtained inshore. Bioerosion rates were significantly higher on-reef in the fjord compared to off-reef deployments in- and offshore. Besides, on-reef coral fragments yielded a broader range of individual growth and bioerosion rates, indicating higher turnover in live reef structures than off-reef with regard to accretion–bioerosion processes. Moreover, if the higher variation in growth rates represents a greater variance in (genetic) adaptations to natural environmental variability in the fjord, inshore reefs could possibly benefit under future ocean change compared to offshore reefs. Although not significantly different due to high variances between replicates, growth rates of orange branches were consistently higher at all sites, while mortality was statistically significantly lower, potentially indicating higher stress-resistance than the less pigmented ... |
author2 |
German coordinated project Biological Impacts of Ocean Acidification BIOACID II Federal Ministry of Education and Research |
format |
Article in Journal/Newspaper |
author |
Büscher, Janina V. Wisshak, Max Form, Armin U. Titschack, Jürgen Nachtigall, Kerstin Riebesell, Ulf |
spellingShingle |
Büscher, Janina V. Wisshak, Max Form, Armin U. Titschack, Jürgen Nachtigall, Kerstin Riebesell, Ulf In situ growth and bioerosion rates of Lophelia pertusain a Norwegian fjord and open shelf cold-water coral habitat |
author_facet |
Büscher, Janina V. Wisshak, Max Form, Armin U. Titschack, Jürgen Nachtigall, Kerstin Riebesell, Ulf |
author_sort |
Büscher, Janina V. |
title |
In situ growth and bioerosion rates of Lophelia pertusain a Norwegian fjord and open shelf cold-water coral habitat |
title_short |
In situ growth and bioerosion rates of Lophelia pertusain a Norwegian fjord and open shelf cold-water coral habitat |
title_full |
In situ growth and bioerosion rates of Lophelia pertusain a Norwegian fjord and open shelf cold-water coral habitat |
title_fullStr |
In situ growth and bioerosion rates of Lophelia pertusain a Norwegian fjord and open shelf cold-water coral habitat |
title_full_unstemmed |
In situ growth and bioerosion rates of Lophelia pertusain a Norwegian fjord and open shelf cold-water coral habitat |
title_sort |
in situ growth and bioerosion rates of lophelia pertusain a norwegian fjord and open shelf cold-water coral habitat |
publisher |
PeerJ |
publishDate |
2019 |
url |
http://dx.doi.org/10.7717/peerj.7586 https://peerj.com/articles/7586.pdf https://peerj.com/articles/7586.xml https://peerj.com/articles/7586.html |
genre |
Lophelia pertusa |
genre_facet |
Lophelia pertusa |
op_source |
PeerJ volume 7, page e7586 ISSN 2167-8359 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.7717/peerj.7586 |
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PeerJ |
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7 |
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e7586 |
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1800756013426540544 |