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Historical biogeography supports Point Conception as the site of turnover between temperate East Pacific ichthyofaunas
The cold temperate and subtropical marine faunas of the Northeastern Pacific meet within California as part of one of the few eastern boundary upwelling ecosystems in the world. Traditionally, it is believed that Point Conception is the precise site of turnover between these two faunas due to sharp...
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Formato: | Online Artículo Texto |
Lenguaje: | English |
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Public Library of Science
2023
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10508600/ https://www.ncbi.nlm.nih.gov/pubmed/37725614 http://dx.doi.org/10.1371/journal.pone.0291776 |
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author | Miller, Elizabeth Christina |
author_facet | Miller, Elizabeth Christina |
author_sort | Miller, Elizabeth Christina |
collection | PubMed |
description | The cold temperate and subtropical marine faunas of the Northeastern Pacific meet within California as part of one of the few eastern boundary upwelling ecosystems in the world. Traditionally, it is believed that Point Conception is the precise site of turnover between these two faunas due to sharp changes in oceanographic conditions. However, evidence from intraspecific phylogeography and species range terminals do not support this view, finding stronger biogeographic breaks elsewhere along the coast. Here I develop a new application of historical biogeographic approaches to uncover sites of transition between faunas without needing an a priori hypothesis of where these occur. I used this approach to determine whether the point of transition between northern and southern temperate faunas occurs at Point Conception or elsewhere within California. I also examined expert-vetted latitudinal range data of California fish species from the 1970s and the 2020s to assess how biogeography could change with the backdrop of climate change. The site of turnover was found to occur near Point Conception, in concordance with the traditional view. I suggest that recent species- and population-level processes could be expected to give signals of different events from historical biogeography, possibly explaining the discrepancy across studies. Species richness of California has increased since the 1970s, mostly due to species’s ranges expanding northward from Baja California (Mexico). Range shifts under warming conditions seem to be increasing the disparity between northern and southern faunas of California, creating a more divergent biogeography. |
format | Online Article Text |
id | pubmed-10508600 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | Public Library of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-105086002023-09-20 Historical biogeography supports Point Conception as the site of turnover between temperate East Pacific ichthyofaunas Miller, Elizabeth Christina PLoS One Research Article The cold temperate and subtropical marine faunas of the Northeastern Pacific meet within California as part of one of the few eastern boundary upwelling ecosystems in the world. Traditionally, it is believed that Point Conception is the precise site of turnover between these two faunas due to sharp changes in oceanographic conditions. However, evidence from intraspecific phylogeography and species range terminals do not support this view, finding stronger biogeographic breaks elsewhere along the coast. Here I develop a new application of historical biogeographic approaches to uncover sites of transition between faunas without needing an a priori hypothesis of where these occur. I used this approach to determine whether the point of transition between northern and southern temperate faunas occurs at Point Conception or elsewhere within California. I also examined expert-vetted latitudinal range data of California fish species from the 1970s and the 2020s to assess how biogeography could change with the backdrop of climate change. The site of turnover was found to occur near Point Conception, in concordance with the traditional view. I suggest that recent species- and population-level processes could be expected to give signals of different events from historical biogeography, possibly explaining the discrepancy across studies. Species richness of California has increased since the 1970s, mostly due to species’s ranges expanding northward from Baja California (Mexico). Range shifts under warming conditions seem to be increasing the disparity between northern and southern faunas of California, creating a more divergent biogeography. Public Library of Science 2023-09-19 /pmc/articles/PMC10508600/ /pubmed/37725614 http://dx.doi.org/10.1371/journal.pone.0291776 Text en © 2023 Elizabeth Christina Miller https://creativecommons.org/licenses/by/4.0/This is an open access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. |
spellingShingle | Research Article Miller, Elizabeth Christina Historical biogeography supports Point Conception as the site of turnover between temperate East Pacific ichthyofaunas |
title | Historical biogeography supports Point Conception as the site of turnover between temperate East Pacific ichthyofaunas |
title_full | Historical biogeography supports Point Conception as the site of turnover between temperate East Pacific ichthyofaunas |
title_fullStr | Historical biogeography supports Point Conception as the site of turnover between temperate East Pacific ichthyofaunas |
title_full_unstemmed | Historical biogeography supports Point Conception as the site of turnover between temperate East Pacific ichthyofaunas |
title_short | Historical biogeography supports Point Conception as the site of turnover between temperate East Pacific ichthyofaunas |
title_sort | historical biogeography supports point conception as the site of turnover between temperate east pacific ichthyofaunas |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10508600/ https://www.ncbi.nlm.nih.gov/pubmed/37725614 http://dx.doi.org/10.1371/journal.pone.0291776 |
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