Data from: Human-mediated extirpation of the unique Chatham Islands sea lion and implications for the conservation management of remaining New Zealand sea lion populations
While terrestrial megafaunal extinctions have been well characterized worldwide, our understanding of declines in marine megafauna remains limited. Here, we use ancient DNA analyses of prehistoric (<1450–1650 AD) sea lion specimens from New Zealand's isolated Chatham Islands to assess the de...
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2016
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Online Access: | https://doi.org/10.5061/dryad.118vg |
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fttriple:oai:gotriple.eu:50|dedup_wf_001::47010e20d82507ebb3d8629d66dcc1c7 2023-05-15T15:33:42+02:00 Data from: Human-mediated extirpation of the unique Chatham Islands sea lion and implications for the conservation management of remaining New Zealand sea lion populations Rawlence, Nicolas J. Collins, Catherine J. Anderson, Christian N. K. Maxwell, Justin J. Smith, Ian W. G. Robertson, Bruce C. Knapp, Michael Horsburgh, Katherine Ann Stanton, Jo-Ann L. Scofield, R. Paul Tennyson, Alan J. D. Matisoo-Smith, Elizabeth A. Waters, Jonathan M. 2016-06-13 https://doi.org/10.5061/dryad.118vg undefined unknown Dryad https://dx.doi.org/10.5061/dryad.118vg http://dx.doi.org/10.5061/dryad.118vg lic_creative-commons 10.5061/dryad.118vg oai:services.nod.dans.knaw.nl:Products/dans:oai:easy.dans.knaw.nl:easy-dataset:93338 oai:easy.dans.knaw.nl:easy-dataset:93338 10|openaire____::9e3be59865b2c1c335d32dae2fe7b254 re3data_____::r3d100000044 10|eurocrisdris::fe4903425d9040f680d8610d9079ea14 10|re3data_____::94816e6421eeb072e7742ce6a9decc5f 10|re3data_____::84e123776089ce3c7a33db98d9cd15a8 10|openaire____::081b82f96300b6a6e3d282bad31cb6e2 10|opendoar____::8b6dd7db9af49e67306feb59a8bdc52c extinction fisheries bycatch Human impact 6000 years BP to 1834 AD ancient DNA New Zealand sea lion Phocarctos hookeri New Zealand Chatham Islands Auckland Islands Campbell Island Life sciences medicine and health care geo envir Dataset https://vocabularies.coar-repositories.org/resource_types/c_ddb1/ 2016 fttriple https://doi.org/10.5061/dryad.118vg 2023-01-22T16:51:41Z While terrestrial megafaunal extinctions have been well characterized worldwide, our understanding of declines in marine megafauna remains limited. Here, we use ancient DNA analyses of prehistoric (<1450–1650 AD) sea lion specimens from New Zealand's isolated Chatham Islands to assess the demographic impacts of human settlement. These data suggest there was a large population of sea lions, unique to the Chatham Islands, at the time of Polynesian settlement. This distinct mitochondrial lineage became rapidly extinct within 200 years due to overhunting, paralleling the extirpation of a similarly large endemic mainland population. Whole mitogenomic analyses confirm substantial intraspecific diversity among prehistoric lineages. Demographic models suggest that even low harvest rates would likely have driven rapid extinction of these lineages. This study indicates that surviving Phocarctos populations are remnants of a once diverse and widespread sea lion assemblage, highlighting dramatic human impacts on endemic marine biodiversity. Our findings also suggest that Phocarctos bycatch in commercial fisheries may contribute to the ongoing population decline. BEAST Dloop phylogenetic analysis with Birth Death speciation priorChatham_sealions_Dloop_Birth_Death.xmlBEAST Dloop phylogenetic analysis with Yule speciation priorChatham_sealions_Dloop_Yule.xmlIndividual Based Model for anthropogenic mortality estimatesIBM script.rSequence alignment of Chatham Island sea lionsSequence alignment of Chatham Island sea lion mtDNA D-loop including all Chatham Islands individuals (NRO number, location, haplotype - C1 to 9), exemplar haplotype sequences of subantarctic individuals (SA1-3), exemplar haplotype sequences of prehistoric New Zealand individuals (NZ1-14), and outgroups (Australian sea lion, South American sea lion, New Zealand furseal). Please see Suppl. Info. Table S1 for numbers of New Zealand and subantarctic individuals for each haplotype.Chatham Island sealions_final.fasBEAST mitogenome phylogenetic analysis with ... Dataset Auckland Islands Unknown New Zealand Campbell Island ENVELOPE(169.500,169.500,-52.500,-52.500) |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
fttriple |
language |
unknown |
topic |
extinction fisheries bycatch Human impact 6000 years BP to 1834 AD ancient DNA New Zealand sea lion Phocarctos hookeri New Zealand Chatham Islands Auckland Islands Campbell Island Life sciences medicine and health care geo envir |
spellingShingle |
extinction fisheries bycatch Human impact 6000 years BP to 1834 AD ancient DNA New Zealand sea lion Phocarctos hookeri New Zealand Chatham Islands Auckland Islands Campbell Island Life sciences medicine and health care geo envir Rawlence, Nicolas J. Collins, Catherine J. Anderson, Christian N. K. Maxwell, Justin J. Smith, Ian W. G. Robertson, Bruce C. Knapp, Michael Horsburgh, Katherine Ann Stanton, Jo-Ann L. Scofield, R. Paul Tennyson, Alan J. D. Matisoo-Smith, Elizabeth A. Waters, Jonathan M. Data from: Human-mediated extirpation of the unique Chatham Islands sea lion and implications for the conservation management of remaining New Zealand sea lion populations |
topic_facet |
extinction fisheries bycatch Human impact 6000 years BP to 1834 AD ancient DNA New Zealand sea lion Phocarctos hookeri New Zealand Chatham Islands Auckland Islands Campbell Island Life sciences medicine and health care geo envir |
description |
While terrestrial megafaunal extinctions have been well characterized worldwide, our understanding of declines in marine megafauna remains limited. Here, we use ancient DNA analyses of prehistoric (<1450–1650 AD) sea lion specimens from New Zealand's isolated Chatham Islands to assess the demographic impacts of human settlement. These data suggest there was a large population of sea lions, unique to the Chatham Islands, at the time of Polynesian settlement. This distinct mitochondrial lineage became rapidly extinct within 200 years due to overhunting, paralleling the extirpation of a similarly large endemic mainland population. Whole mitogenomic analyses confirm substantial intraspecific diversity among prehistoric lineages. Demographic models suggest that even low harvest rates would likely have driven rapid extinction of these lineages. This study indicates that surviving Phocarctos populations are remnants of a once diverse and widespread sea lion assemblage, highlighting dramatic human impacts on endemic marine biodiversity. Our findings also suggest that Phocarctos bycatch in commercial fisheries may contribute to the ongoing population decline. BEAST Dloop phylogenetic analysis with Birth Death speciation priorChatham_sealions_Dloop_Birth_Death.xmlBEAST Dloop phylogenetic analysis with Yule speciation priorChatham_sealions_Dloop_Yule.xmlIndividual Based Model for anthropogenic mortality estimatesIBM script.rSequence alignment of Chatham Island sea lionsSequence alignment of Chatham Island sea lion mtDNA D-loop including all Chatham Islands individuals (NRO number, location, haplotype - C1 to 9), exemplar haplotype sequences of subantarctic individuals (SA1-3), exemplar haplotype sequences of prehistoric New Zealand individuals (NZ1-14), and outgroups (Australian sea lion, South American sea lion, New Zealand furseal). Please see Suppl. Info. Table S1 for numbers of New Zealand and subantarctic individuals for each haplotype.Chatham Island sealions_final.fasBEAST mitogenome phylogenetic analysis with ... |
format |
Dataset |
author |
Rawlence, Nicolas J. Collins, Catherine J. Anderson, Christian N. K. Maxwell, Justin J. Smith, Ian W. G. Robertson, Bruce C. Knapp, Michael Horsburgh, Katherine Ann Stanton, Jo-Ann L. Scofield, R. Paul Tennyson, Alan J. D. Matisoo-Smith, Elizabeth A. Waters, Jonathan M. |
author_facet |
Rawlence, Nicolas J. Collins, Catherine J. Anderson, Christian N. K. Maxwell, Justin J. Smith, Ian W. G. Robertson, Bruce C. Knapp, Michael Horsburgh, Katherine Ann Stanton, Jo-Ann L. Scofield, R. Paul Tennyson, Alan J. D. Matisoo-Smith, Elizabeth A. Waters, Jonathan M. |
author_sort |
Rawlence, Nicolas J. |
title |
Data from: Human-mediated extirpation of the unique Chatham Islands sea lion and implications for the conservation management of remaining New Zealand sea lion populations |
title_short |
Data from: Human-mediated extirpation of the unique Chatham Islands sea lion and implications for the conservation management of remaining New Zealand sea lion populations |
title_full |
Data from: Human-mediated extirpation of the unique Chatham Islands sea lion and implications for the conservation management of remaining New Zealand sea lion populations |
title_fullStr |
Data from: Human-mediated extirpation of the unique Chatham Islands sea lion and implications for the conservation management of remaining New Zealand sea lion populations |
title_full_unstemmed |
Data from: Human-mediated extirpation of the unique Chatham Islands sea lion and implications for the conservation management of remaining New Zealand sea lion populations |
title_sort |
data from: human-mediated extirpation of the unique chatham islands sea lion and implications for the conservation management of remaining new zealand sea lion populations |
publisher |
Dryad |
publishDate |
2016 |
url |
https://doi.org/10.5061/dryad.118vg |
long_lat |
ENVELOPE(169.500,169.500,-52.500,-52.500) |
geographic |
New Zealand Campbell Island |
geographic_facet |
New Zealand Campbell Island |
genre |
Auckland Islands |
genre_facet |
Auckland Islands |
op_source |
10.5061/dryad.118vg oai:services.nod.dans.knaw.nl:Products/dans:oai:easy.dans.knaw.nl:easy-dataset:93338 oai:easy.dans.knaw.nl:easy-dataset:93338 10|openaire____::9e3be59865b2c1c335d32dae2fe7b254 re3data_____::r3d100000044 10|eurocrisdris::fe4903425d9040f680d8610d9079ea14 10|re3data_____::94816e6421eeb072e7742ce6a9decc5f 10|re3data_____::84e123776089ce3c7a33db98d9cd15a8 10|openaire____::081b82f96300b6a6e3d282bad31cb6e2 10|opendoar____::8b6dd7db9af49e67306feb59a8bdc52c |
op_relation |
https://dx.doi.org/10.5061/dryad.118vg http://dx.doi.org/10.5061/dryad.118vg |
op_rights |
lic_creative-commons |
op_doi |
https://doi.org/10.5061/dryad.118vg |
_version_ |
1766364233285500928 |