Larval Dispersal Modeling Suggests Limited Ecological Connectivity Between Fjords on the West Antarctic Peninsula
Synopsis Larval dispersal is a key process for community assembly and population maintenance in the marine environment, yet it is extremely difficult to measure at ecologically relevant spatio-temporal scales. We used a high-resolution hydrodynamic model and particle-tracking model to explore the di...
Published in: | Integrative and Comparative Biology |
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Oxford University Press (OUP)
2020
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Online Access: | http://dx.doi.org/10.1093/icb/icaa094 http://academic.oup.com/icb/advance-article-pdf/doi/10.1093/icb/icaa094/33822108/icaa094.pdf http://academic.oup.com/icb/article-pdf/60/6/1369/34926815/icaa094.pdf |
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croxfordunivpr:10.1093/icb/icaa094 2023-10-01T03:51:38+02:00 Larval Dispersal Modeling Suggests Limited Ecological Connectivity Between Fjords on the West Antarctic Peninsula Ziegler, Amanda F Hahn-Woernle, Lisa Powell, Brian Smith, Craig R National Science Foundation 2020 http://dx.doi.org/10.1093/icb/icaa094 http://academic.oup.com/icb/advance-article-pdf/doi/10.1093/icb/icaa094/33822108/icaa094.pdf http://academic.oup.com/icb/article-pdf/60/6/1369/34926815/icaa094.pdf en eng Oxford University Press (OUP) https://academic.oup.com/journals/pages/open_access/funder_policies/chorus/standard_publication_model Integrative and Comparative Biology volume 60, issue 6, page 1369-1385 ISSN 1540-7063 1557-7023 Plant Science Animal Science and Zoology journal-article 2020 croxfordunivpr https://doi.org/10.1093/icb/icaa094 2023-09-01T10:53:24Z Synopsis Larval dispersal is a key process for community assembly and population maintenance in the marine environment, yet it is extremely difficult to measure at ecologically relevant spatio-temporal scales. We used a high-resolution hydrodynamic model and particle-tracking model to explore the dispersal of simulated larvae in a hydrographically complex region of fjords on the West Antarctic Peninsula. Modeled larvae represented two end members of dispersal potential observed in Antarctic benthos resulting from differing developmental periods and swimming behavior. For simulations of low dispersing larvae (pre-competency period = 8 days, settlement period = 15 days, swimming downward) self-recruitment within fjords was important, with no larval settlement occurring in adjacent fjords <50 km apart. For simulations of highly dispersing organisms (pre-competency period = 35–120 days, settlement period = 30–115 days, no swimming behavior), dispersal between fjords occurred when larvae were in the water column for at least 35 days, but settlement was rarely successful even for larvae spending up to 150 days in the plankton. The lack of ecological connectivity between fjords within a single spawning event suggests that these fjords harbor ecologically distinct populations in which self-recruitment may maintain populations, and genetic connectivity between fjords is likely achieved through stepping-stone dispersal. Export of larvae from natal fjord populations to the broader shelf region (>100 km distance) occurred within surface layers (<100 m depth) and was enhanced by episodic katabatic wind events that may be common in glaciomarine fjords worldwide. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Oxford University Press (via Crossref) Antarctic Antarctic Peninsula Integrative and Comparative Biology 60 6 1369 1385 |
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Oxford University Press (via Crossref) |
op_collection_id |
croxfordunivpr |
language |
English |
topic |
Plant Science Animal Science and Zoology |
spellingShingle |
Plant Science Animal Science and Zoology Ziegler, Amanda F Hahn-Woernle, Lisa Powell, Brian Smith, Craig R Larval Dispersal Modeling Suggests Limited Ecological Connectivity Between Fjords on the West Antarctic Peninsula |
topic_facet |
Plant Science Animal Science and Zoology |
description |
Synopsis Larval dispersal is a key process for community assembly and population maintenance in the marine environment, yet it is extremely difficult to measure at ecologically relevant spatio-temporal scales. We used a high-resolution hydrodynamic model and particle-tracking model to explore the dispersal of simulated larvae in a hydrographically complex region of fjords on the West Antarctic Peninsula. Modeled larvae represented two end members of dispersal potential observed in Antarctic benthos resulting from differing developmental periods and swimming behavior. For simulations of low dispersing larvae (pre-competency period = 8 days, settlement period = 15 days, swimming downward) self-recruitment within fjords was important, with no larval settlement occurring in adjacent fjords <50 km apart. For simulations of highly dispersing organisms (pre-competency period = 35–120 days, settlement period = 30–115 days, no swimming behavior), dispersal between fjords occurred when larvae were in the water column for at least 35 days, but settlement was rarely successful even for larvae spending up to 150 days in the plankton. The lack of ecological connectivity between fjords within a single spawning event suggests that these fjords harbor ecologically distinct populations in which self-recruitment may maintain populations, and genetic connectivity between fjords is likely achieved through stepping-stone dispersal. Export of larvae from natal fjord populations to the broader shelf region (>100 km distance) occurred within surface layers (<100 m depth) and was enhanced by episodic katabatic wind events that may be common in glaciomarine fjords worldwide. |
author2 |
National Science Foundation |
format |
Article in Journal/Newspaper |
author |
Ziegler, Amanda F Hahn-Woernle, Lisa Powell, Brian Smith, Craig R |
author_facet |
Ziegler, Amanda F Hahn-Woernle, Lisa Powell, Brian Smith, Craig R |
author_sort |
Ziegler, Amanda F |
title |
Larval Dispersal Modeling Suggests Limited Ecological Connectivity Between Fjords on the West Antarctic Peninsula |
title_short |
Larval Dispersal Modeling Suggests Limited Ecological Connectivity Between Fjords on the West Antarctic Peninsula |
title_full |
Larval Dispersal Modeling Suggests Limited Ecological Connectivity Between Fjords on the West Antarctic Peninsula |
title_fullStr |
Larval Dispersal Modeling Suggests Limited Ecological Connectivity Between Fjords on the West Antarctic Peninsula |
title_full_unstemmed |
Larval Dispersal Modeling Suggests Limited Ecological Connectivity Between Fjords on the West Antarctic Peninsula |
title_sort |
larval dispersal modeling suggests limited ecological connectivity between fjords on the west antarctic peninsula |
publisher |
Oxford University Press (OUP) |
publishDate |
2020 |
url |
http://dx.doi.org/10.1093/icb/icaa094 http://academic.oup.com/icb/advance-article-pdf/doi/10.1093/icb/icaa094/33822108/icaa094.pdf http://academic.oup.com/icb/article-pdf/60/6/1369/34926815/icaa094.pdf |
geographic |
Antarctic Antarctic Peninsula |
geographic_facet |
Antarctic Antarctic Peninsula |
genre |
Antarc* Antarctic Antarctic Peninsula |
genre_facet |
Antarc* Antarctic Antarctic Peninsula |
op_source |
Integrative and Comparative Biology volume 60, issue 6, page 1369-1385 ISSN 1540-7063 1557-7023 |
op_rights |
https://academic.oup.com/journals/pages/open_access/funder_policies/chorus/standard_publication_model |
op_doi |
https://doi.org/10.1093/icb/icaa094 |
container_title |
Integrative and Comparative Biology |
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60 |
container_issue |
6 |
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1369 |
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1385 |
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1778516804908351488 |