Island biogeography revisited: museomics reveals affinities of shelf island birds determined by bathymetry and paleo-rivers, not by distance to mainland
Island biogeography is one of the most powerful subdisciplines of ecology: its mathematical predictions that island size and distance to mainland determine diversity have withstood the test of time. A key question is whether these predictions follow at a population-genomic level. Using rigorous anci...
| _version_ | 1825715000590729216 |
|---|---|
| author | Kritika M. Garg Balaji Chattopadhyay Emilie Cros Suzanne Tomassi Suzan Benedick David P. Edwards Frank E. Rheindt |
| author_facet | Kritika M. Garg Balaji Chattopadhyay Emilie Cros Suzanne Tomassi Suzan Benedick David P. Edwards Frank E. Rheindt |
| author_sort | Kritika M. Garg |
| collection | UMS |
| description | Island biogeography is one of the most powerful subdisciplines of ecology: its mathematical predictions that island size and distance to mainland determine diversity have withstood the test of time. A key question is whether these predictions follow at a population-genomic level. Using rigorous ancient-DNA protocols, we retrieved approximately 1,000 genomic markers from approximately 100 historic specimens of two Southeast Asian songbird complexes from across the Sunda Shelf archipelago collected 1893–1957. We show that the genetic affinities of populations on small shelf islands defy the predictions of geographic distance and appear governed by Earth-historic factors including the position of terrestrial barriers (paleo-rivers) and persistence of corridors (Quaternary land bridges). Our analyses suggest that classic island-biogeographic predictors may not hold well for population-genomic dynamics on the thousands of shelf islands across the globe, which are exposed to dynamic changes in land distribution during Quaternary climate change. |
| first_indexed | 2024-03-06T03:20:09Z |
| format | Article |
| id | ums.eprints-34136 |
| institution | Universiti Malaysia Sabah |
| language | English English |
| last_indexed | 2024-03-06T03:20:09Z |
| publishDate | 2022 |
| publisher | Oxford University Press |
| record_format | dspace |
| spelling | ums.eprints-341362022-09-19T07:29:59Z https://eprints.ums.edu.my/id/eprint/34136/ Island biogeography revisited: museomics reveals affinities of shelf island birds determined by bathymetry and paleo-rivers, not by distance to mainland Kritika M. Garg Balaji Chattopadhyay Emilie Cros Suzanne Tomassi Suzan Benedick David P. Edwards Frank E. Rheindt QH1-(199.5) General Including nature conservation, geographical distribution Island biogeography is one of the most powerful subdisciplines of ecology: its mathematical predictions that island size and distance to mainland determine diversity have withstood the test of time. A key question is whether these predictions follow at a population-genomic level. Using rigorous ancient-DNA protocols, we retrieved approximately 1,000 genomic markers from approximately 100 historic specimens of two Southeast Asian songbird complexes from across the Sunda Shelf archipelago collected 1893–1957. We show that the genetic affinities of populations on small shelf islands defy the predictions of geographic distance and appear governed by Earth-historic factors including the position of terrestrial barriers (paleo-rivers) and persistence of corridors (Quaternary land bridges). Our analyses suggest that classic island-biogeographic predictors may not hold well for population-genomic dynamics on the thousands of shelf islands across the globe, which are exposed to dynamic changes in land distribution during Quaternary climate change. Oxford University Press 2022-01 Article PeerReviewed text en https://eprints.ums.edu.my/id/eprint/34136/1/Island%20biogeography%20revisited%2C%20Museomics%20reveals%20affinities%20of%20shelf%20island%20birds%20determined%20by%20bathymetry%20and%20paleo-rivers%2C%20not%20by%20distance%20to%20mainland.ABSTRACT.pdf text en https://eprints.ums.edu.my/id/eprint/34136/2/Island%20biogeography%20revisited%2C%20museomics%20reveals%20affinities%20of%20shelf%20island%20birds%20determined%20by%20bathymetry%20and%20paleo-rivers%2C%20not%20by%20distance%20to%20mainland.pdf Kritika M. Garg and Balaji Chattopadhyay and Emilie Cros and Suzanne Tomassi and Suzan Benedick and David P. Edwards and Frank E. Rheindt (2022) Island biogeography revisited: museomics reveals affinities of shelf island birds determined by bathymetry and paleo-rivers, not by distance to mainland. Molecular Biology and Evolution, 39. pp. 1-15. ISSN 1537-1719 (E-ISSN) , 0737-4038 (P-ISSN) https://academic.oup.com/mbe/article/39/1/msab340/6454101 https://doi.org/10.1093/molbev/msab340 https://doi.org/10.1093/molbev/msab340 |
| spellingShingle | QH1-(199.5) General Including nature conservation, geographical distribution Kritika M. Garg Balaji Chattopadhyay Emilie Cros Suzanne Tomassi Suzan Benedick David P. Edwards Frank E. Rheindt Island biogeography revisited: museomics reveals affinities of shelf island birds determined by bathymetry and paleo-rivers, not by distance to mainland |
| title | Island biogeography revisited: museomics reveals affinities of shelf island birds determined by bathymetry and paleo-rivers, not by distance to mainland |
| title_full | Island biogeography revisited: museomics reveals affinities of shelf island birds determined by bathymetry and paleo-rivers, not by distance to mainland |
| title_fullStr | Island biogeography revisited: museomics reveals affinities of shelf island birds determined by bathymetry and paleo-rivers, not by distance to mainland |
| title_full_unstemmed | Island biogeography revisited: museomics reveals affinities of shelf island birds determined by bathymetry and paleo-rivers, not by distance to mainland |
| title_short | Island biogeography revisited: museomics reveals affinities of shelf island birds determined by bathymetry and paleo-rivers, not by distance to mainland |
| title_sort | island biogeography revisited museomics reveals affinities of shelf island birds determined by bathymetry and paleo rivers not by distance to mainland |
| topic | QH1-(199.5) General Including nature conservation, geographical distribution |
| url | https://eprints.ums.edu.my/id/eprint/34136/1/Island%20biogeography%20revisited%2C%20Museomics%20reveals%20affinities%20of%20shelf%20island%20birds%20determined%20by%20bathymetry%20and%20paleo-rivers%2C%20not%20by%20distance%20to%20mainland.ABSTRACT.pdf https://eprints.ums.edu.my/id/eprint/34136/2/Island%20biogeography%20revisited%2C%20museomics%20reveals%20affinities%20of%20shelf%20island%20birds%20determined%20by%20bathymetry%20and%20paleo-rivers%2C%20not%20by%20distance%20to%20mainland.pdf |
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