Does Population Size Drive Changes in Transatlantic Vagrancy for Gulls? A Study of Seven North Atlantic Species
European gulls Chroicocephalus ridibundus, Larus canus , and L. graellsii have dispersed to North America and C. ridibundus and L. graellsii have bred or attempted to breed. North American gulls L. delawarensis, Leucophaeus atricilla, Leucophaeus pipixcan , and Chroicocephalus philadelphia have disp...
Published in: | Frontiers in Ecology and Evolution |
---|---|
Main Authors: | , , |
Other Authors: | |
Format: | Article in Journal/Newspaper |
Language: | unknown |
Published: |
Frontiers Media SA
2022
|
Subjects: | |
Online Access: | http://dx.doi.org/10.3389/fevo.2022.850577 https://www.frontiersin.org/articles/10.3389/fevo.2022.850577/full |
id |
crfrontiers:10.3389/fevo.2022.850577 |
---|---|
record_format |
openpolar |
spelling |
crfrontiers:10.3389/fevo.2022.850577 2024-09-15T18:17:36+00:00 Does Population Size Drive Changes in Transatlantic Vagrancy for Gulls? A Study of Seven North Atlantic Species Acosta Alamo, Marlen Manne, Lisa L. Veit, Richard R. National Science Foundation 2022 http://dx.doi.org/10.3389/fevo.2022.850577 https://www.frontiersin.org/articles/10.3389/fevo.2022.850577/full unknown Frontiers Media SA https://creativecommons.org/licenses/by/4.0/ Frontiers in Ecology and Evolution volume 10 ISSN 2296-701X journal-article 2022 crfrontiers https://doi.org/10.3389/fevo.2022.850577 2024-06-25T04:04:45Z European gulls Chroicocephalus ridibundus, Larus canus , and L. graellsii have dispersed to North America and C. ridibundus and L. graellsii have bred or attempted to breed. North American gulls L. delawarensis, Leucophaeus atricilla, Leucophaeus pipixcan , and Chroicocephalus philadelphia have dispersed to Europe, although no successful breeding by non-hybrid pairs has yet occurred. We hypothesized that as gull population sizes increase, the number of birds exploring potential new breeding sites also increases. To test our hypothesis, we compared the number of transatlantic vagrants to the population size on the previous year using generalized linear models. We found an increasing number of transatlantic vagrants moving in both directions, which suggests that vagrancy is not a random phenomenon driven by strong winds nor caused by reverse migration. Population size predicted transatlantic vagrancy in four of the seven species. However, our hypothesis that increases in population size drive increases in vagrancy was only supported in two of these instances. We further looked at sub-populations of L. delawarensis in North America and tested our hypothesis for each subpopulation. We found partial support for our hypothesis for these data. Even within one species, we observed multiple relationships between vagrancy and population size. Our results showed that size or trend in source population size—in some circumstances—is clearly a driver of vagrancy, but other factors must play an important role too. As anthropogenic development continues, and high-quality habitats become farther apart, it is important that we continue to investigate all drivers of vagrancy because the persistence of a species may depend crucially on its longest-distance dispersers. Article in Journal/Newspaper Larus canus North Atlantic Chroicocephalus ridibundus Frontiers (Publisher) Frontiers in Ecology and Evolution 10 |
institution |
Open Polar |
collection |
Frontiers (Publisher) |
op_collection_id |
crfrontiers |
language |
unknown |
description |
European gulls Chroicocephalus ridibundus, Larus canus , and L. graellsii have dispersed to North America and C. ridibundus and L. graellsii have bred or attempted to breed. North American gulls L. delawarensis, Leucophaeus atricilla, Leucophaeus pipixcan , and Chroicocephalus philadelphia have dispersed to Europe, although no successful breeding by non-hybrid pairs has yet occurred. We hypothesized that as gull population sizes increase, the number of birds exploring potential new breeding sites also increases. To test our hypothesis, we compared the number of transatlantic vagrants to the population size on the previous year using generalized linear models. We found an increasing number of transatlantic vagrants moving in both directions, which suggests that vagrancy is not a random phenomenon driven by strong winds nor caused by reverse migration. Population size predicted transatlantic vagrancy in four of the seven species. However, our hypothesis that increases in population size drive increases in vagrancy was only supported in two of these instances. We further looked at sub-populations of L. delawarensis in North America and tested our hypothesis for each subpopulation. We found partial support for our hypothesis for these data. Even within one species, we observed multiple relationships between vagrancy and population size. Our results showed that size or trend in source population size—in some circumstances—is clearly a driver of vagrancy, but other factors must play an important role too. As anthropogenic development continues, and high-quality habitats become farther apart, it is important that we continue to investigate all drivers of vagrancy because the persistence of a species may depend crucially on its longest-distance dispersers. |
author2 |
National Science Foundation |
format |
Article in Journal/Newspaper |
author |
Acosta Alamo, Marlen Manne, Lisa L. Veit, Richard R. |
spellingShingle |
Acosta Alamo, Marlen Manne, Lisa L. Veit, Richard R. Does Population Size Drive Changes in Transatlantic Vagrancy for Gulls? A Study of Seven North Atlantic Species |
author_facet |
Acosta Alamo, Marlen Manne, Lisa L. Veit, Richard R. |
author_sort |
Acosta Alamo, Marlen |
title |
Does Population Size Drive Changes in Transatlantic Vagrancy for Gulls? A Study of Seven North Atlantic Species |
title_short |
Does Population Size Drive Changes in Transatlantic Vagrancy for Gulls? A Study of Seven North Atlantic Species |
title_full |
Does Population Size Drive Changes in Transatlantic Vagrancy for Gulls? A Study of Seven North Atlantic Species |
title_fullStr |
Does Population Size Drive Changes in Transatlantic Vagrancy for Gulls? A Study of Seven North Atlantic Species |
title_full_unstemmed |
Does Population Size Drive Changes in Transatlantic Vagrancy for Gulls? A Study of Seven North Atlantic Species |
title_sort |
does population size drive changes in transatlantic vagrancy for gulls? a study of seven north atlantic species |
publisher |
Frontiers Media SA |
publishDate |
2022 |
url |
http://dx.doi.org/10.3389/fevo.2022.850577 https://www.frontiersin.org/articles/10.3389/fevo.2022.850577/full |
genre |
Larus canus North Atlantic Chroicocephalus ridibundus |
genre_facet |
Larus canus North Atlantic Chroicocephalus ridibundus |
op_source |
Frontiers in Ecology and Evolution volume 10 ISSN 2296-701X |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3389/fevo.2022.850577 |
container_title |
Frontiers in Ecology and Evolution |
container_volume |
10 |
_version_ |
1810455661919600640 |