Landscape heterogeneity drives intra-population niche variation and reproduction in an arctic top predator
While intra-population variability in resource use is ubiquitous, little is known of how this measure of niche diversity varies in space and its role in population dynamics. Here we examined how heterogeneous breeding environments can structure intra-population niche variation in both resource use a...
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ftpubmed:oai:pubmedcentral.nih.gov:3790536 2023-05-15T15:00:35+02:00 Landscape heterogeneity drives intra-population niche variation and reproduction in an arctic top predator L'Hérault, Vincent Franke, Alastair Lecomte, Nicolas Alogut, Adam Bêty, Joël 2013-09 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3790536 http://www.ncbi.nlm.nih.gov/pubmed/24101979 https://doi.org/10.1002/ece3.675 en eng Blackwell Publishing Ltd http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3790536 http://www.ncbi.nlm.nih.gov/pubmed/24101979 http://dx.doi.org/10.1002/ece3.675 © 2013 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd http://creativecommons.org/licenses/by/2.5/ Re-use of this article is permitted in accordance with the Creative Commons Deed, Attribution 2.5, which does not permit commercial exploitation. CC-BY Original Research Text 2013 ftpubmed https://doi.org/10.1002/ece3.675 2013-10-13T00:28:01Z While intra-population variability in resource use is ubiquitous, little is known of how this measure of niche diversity varies in space and its role in population dynamics. Here we examined how heterogeneous breeding environments can structure intra-population niche variation in both resource use and reproductive output. We investigated intra-population niche variation in the Arctic tundra ecosystem, studying peregrine falcon (Falco peregrinus tundrius, White) breeding within a terrestrial-marine gradient near Rankin Inlet, Nunavut, Canada. Using stable isotope analysis, we found that intra-population niches varied at the individual level; we examined within-nest and among-nest variation, though only the latter varied along the terrestrial-marine gradient (i.e., increased among-nest variability among birds nesting within the marine environment, indicating higher degree of specialization). Terrestrial prey species (small herbivores and insectivores) were consumed by virtually all falcons. Falcons nesting within the marine environment made use of marine prey (sea birds), but depended heavily on terrestrial prey (up to 90% of the diet). Using 28-years of peregrine falcon nesting data, we found a positive relationship between the proportion of terrestrial habitat surrounding nest sites and annual nestling production, but no relationship with the likelihood of successfully rearing at least one nestling reaching 25 days old. Annually, successful inland breeders raised 0.47 more young on average compared to offshore breeders, which yields potential fitness consequences for this long-living species. The analyses of niche and reproductive success suggest a potential breeding cost for accessing distant terrestrial prey, perhaps due to additional traveling costs, for those individuals with marine nest site locations. Our study indicates how landscape heterogeneity can generate proximate (niche variation) and ultimate (reproduction) consequences on a population of generalist predator. We also show that within-individual ... Text Arctic Falco peregrinus Nunavut peregrine falcon Rankin Inlet Tundra PubMed Central (PMC) Arctic Canada Nunavut Rankin Inlet ENVELOPE(-91.983,-91.983,62.734,62.734) Ecology and Evolution 3 9 2867 2879 |
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Original Research |
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Original Research L'Hérault, Vincent Franke, Alastair Lecomte, Nicolas Alogut, Adam Bêty, Joël Landscape heterogeneity drives intra-population niche variation and reproduction in an arctic top predator |
topic_facet |
Original Research |
description |
While intra-population variability in resource use is ubiquitous, little is known of how this measure of niche diversity varies in space and its role in population dynamics. Here we examined how heterogeneous breeding environments can structure intra-population niche variation in both resource use and reproductive output. We investigated intra-population niche variation in the Arctic tundra ecosystem, studying peregrine falcon (Falco peregrinus tundrius, White) breeding within a terrestrial-marine gradient near Rankin Inlet, Nunavut, Canada. Using stable isotope analysis, we found that intra-population niches varied at the individual level; we examined within-nest and among-nest variation, though only the latter varied along the terrestrial-marine gradient (i.e., increased among-nest variability among birds nesting within the marine environment, indicating higher degree of specialization). Terrestrial prey species (small herbivores and insectivores) were consumed by virtually all falcons. Falcons nesting within the marine environment made use of marine prey (sea birds), but depended heavily on terrestrial prey (up to 90% of the diet). Using 28-years of peregrine falcon nesting data, we found a positive relationship between the proportion of terrestrial habitat surrounding nest sites and annual nestling production, but no relationship with the likelihood of successfully rearing at least one nestling reaching 25 days old. Annually, successful inland breeders raised 0.47 more young on average compared to offshore breeders, which yields potential fitness consequences for this long-living species. The analyses of niche and reproductive success suggest a potential breeding cost for accessing distant terrestrial prey, perhaps due to additional traveling costs, for those individuals with marine nest site locations. Our study indicates how landscape heterogeneity can generate proximate (niche variation) and ultimate (reproduction) consequences on a population of generalist predator. We also show that within-individual ... |
format |
Text |
author |
L'Hérault, Vincent Franke, Alastair Lecomte, Nicolas Alogut, Adam Bêty, Joël |
author_facet |
L'Hérault, Vincent Franke, Alastair Lecomte, Nicolas Alogut, Adam Bêty, Joël |
author_sort |
L'Hérault, Vincent |
title |
Landscape heterogeneity drives intra-population niche variation and reproduction in an arctic top predator |
title_short |
Landscape heterogeneity drives intra-population niche variation and reproduction in an arctic top predator |
title_full |
Landscape heterogeneity drives intra-population niche variation and reproduction in an arctic top predator |
title_fullStr |
Landscape heterogeneity drives intra-population niche variation and reproduction in an arctic top predator |
title_full_unstemmed |
Landscape heterogeneity drives intra-population niche variation and reproduction in an arctic top predator |
title_sort |
landscape heterogeneity drives intra-population niche variation and reproduction in an arctic top predator |
publisher |
Blackwell Publishing Ltd |
publishDate |
2013 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3790536 http://www.ncbi.nlm.nih.gov/pubmed/24101979 https://doi.org/10.1002/ece3.675 |
long_lat |
ENVELOPE(-91.983,-91.983,62.734,62.734) |
geographic |
Arctic Canada Nunavut Rankin Inlet |
geographic_facet |
Arctic Canada Nunavut Rankin Inlet |
genre |
Arctic Falco peregrinus Nunavut peregrine falcon Rankin Inlet Tundra |
genre_facet |
Arctic Falco peregrinus Nunavut peregrine falcon Rankin Inlet Tundra |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3790536 http://www.ncbi.nlm.nih.gov/pubmed/24101979 http://dx.doi.org/10.1002/ece3.675 |
op_rights |
© 2013 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd http://creativecommons.org/licenses/by/2.5/ Re-use of this article is permitted in accordance with the Creative Commons Deed, Attribution 2.5, which does not permit commercial exploitation. |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1002/ece3.675 |
container_title |
Ecology and Evolution |
container_volume |
3 |
container_issue |
9 |
container_start_page |
2867 |
op_container_end_page |
2879 |
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1766332672834011136 |