Reconsidering connectivity in the sub‐ Antarctic
ABSTRACT Extreme and remote environments provide useful settings to test ideas about the ecological and evolutionary drivers of biological diversity. In the sub‐ A ntarctic, isolation by geographic, geological and glaciological processes has long been thought to underpin patterns in the region'...
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crwiley:10.1111/brv.12327 2024-09-09T19:10:08+00:00 Reconsidering connectivity in the sub‐ Antarctic Moon, Katherine L. Chown, Steven L. Fraser, Ceridwen I. Australian Postgraduate Award Australian National University's Fenner School of the Environment and Society Australian Antarctic Science Australian Research Council DECRA Monash University's School of Biological Sciences 2017 http://dx.doi.org/10.1111/brv.12327 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fbrv.12327 https://onlinelibrary.wiley.com/doi/pdf/10.1111/brv.12327 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Biological Reviews volume 92, issue 4, page 2164-2181 ISSN 1464-7931 1469-185X journal-article 2017 crwiley https://doi.org/10.1111/brv.12327 2024-08-09T04:21:13Z ABSTRACT Extreme and remote environments provide useful settings to test ideas about the ecological and evolutionary drivers of biological diversity. In the sub‐ A ntarctic, isolation by geographic, geological and glaciological processes has long been thought to underpin patterns in the region's terrestrial and marine diversity. Molecular studies using increasingly high‐resolution data are, however, challenging this perspective, demonstrating that many taxa disperse among distant sub‐ A ntarctic landmasses. Here, we reconsider connectivity in the sub‐ A ntarctic region, identifying which taxa are relatively isolated, which are well connected, and the scales across which this connectivity occurs in both terrestrial and marine systems. Although many organisms show evidence of occasional long‐distance, trans‐oceanic dispersal, these events are often insufficient to maintain gene flow across the region. Species that do show evidence of connectivity across large distances include both active dispersers and more sedentary species. Overall, connectivity patterns in the sub‐ A ntarctic at intra‐ and inter‐island scales are highly complex, influenced by life‐history traits and local dynamics such as relative dispersal capacity and propagule pressure, natal philopatry, feeding associations, the extent of human exploitation, past climate cycles, contemporary climate, and physical barriers to movement. An increasing use of molecular data – particularly genomic data sets that can reveal fine‐scale patterns – and more effective international collaboration and communication that facilitates integration of data from across the sub‐ A ntarctic, are providing fresh insights into the processes driving patterns of diversity in the region. These insights offer a platform for assessing the ways in which changing dispersal mechanisms, such as through increasing human activity and changes to wind and ocean circulation, may alter sub‐ A ntarctic biodiversity patterns in the future. Article in Journal/Newspaper Antarc* Antarctic Wiley Online Library Antarctic Biological Reviews 92 4 2164 2181 |
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Wiley Online Library |
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English |
description |
ABSTRACT Extreme and remote environments provide useful settings to test ideas about the ecological and evolutionary drivers of biological diversity. In the sub‐ A ntarctic, isolation by geographic, geological and glaciological processes has long been thought to underpin patterns in the region's terrestrial and marine diversity. Molecular studies using increasingly high‐resolution data are, however, challenging this perspective, demonstrating that many taxa disperse among distant sub‐ A ntarctic landmasses. Here, we reconsider connectivity in the sub‐ A ntarctic region, identifying which taxa are relatively isolated, which are well connected, and the scales across which this connectivity occurs in both terrestrial and marine systems. Although many organisms show evidence of occasional long‐distance, trans‐oceanic dispersal, these events are often insufficient to maintain gene flow across the region. Species that do show evidence of connectivity across large distances include both active dispersers and more sedentary species. Overall, connectivity patterns in the sub‐ A ntarctic at intra‐ and inter‐island scales are highly complex, influenced by life‐history traits and local dynamics such as relative dispersal capacity and propagule pressure, natal philopatry, feeding associations, the extent of human exploitation, past climate cycles, contemporary climate, and physical barriers to movement. An increasing use of molecular data – particularly genomic data sets that can reveal fine‐scale patterns – and more effective international collaboration and communication that facilitates integration of data from across the sub‐ A ntarctic, are providing fresh insights into the processes driving patterns of diversity in the region. These insights offer a platform for assessing the ways in which changing dispersal mechanisms, such as through increasing human activity and changes to wind and ocean circulation, may alter sub‐ A ntarctic biodiversity patterns in the future. |
author2 |
Australian Postgraduate Award Australian National University's Fenner School of the Environment and Society Australian Antarctic Science Australian Research Council DECRA Monash University's School of Biological Sciences |
format |
Article in Journal/Newspaper |
author |
Moon, Katherine L. Chown, Steven L. Fraser, Ceridwen I. |
spellingShingle |
Moon, Katherine L. Chown, Steven L. Fraser, Ceridwen I. Reconsidering connectivity in the sub‐ Antarctic |
author_facet |
Moon, Katherine L. Chown, Steven L. Fraser, Ceridwen I. |
author_sort |
Moon, Katherine L. |
title |
Reconsidering connectivity in the sub‐ Antarctic |
title_short |
Reconsidering connectivity in the sub‐ Antarctic |
title_full |
Reconsidering connectivity in the sub‐ Antarctic |
title_fullStr |
Reconsidering connectivity in the sub‐ Antarctic |
title_full_unstemmed |
Reconsidering connectivity in the sub‐ Antarctic |
title_sort |
reconsidering connectivity in the sub‐ antarctic |
publisher |
Wiley |
publishDate |
2017 |
url |
http://dx.doi.org/10.1111/brv.12327 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fbrv.12327 https://onlinelibrary.wiley.com/doi/pdf/10.1111/brv.12327 |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
Biological Reviews volume 92, issue 4, page 2164-2181 ISSN 1464-7931 1469-185X |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/brv.12327 |
container_title |
Biological Reviews |
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92 |
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4 |
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2164 |
op_container_end_page |
2181 |
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1809824639284674560 |