Numerical responses of an avian predator to prey fluctuations in a temperate latitude: breeders vs. entire population
Abstract Distinct numerical responses of predators to fluctuations in the abundance of their prey are often observed in northern regions but occur more rarely in temperate latitudes. This statement is, however, mostly based on observations of breeding populations, while in some predators, for exampl...
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crwiley:10.1007/s10144-016-0563-0 2024-06-02T08:05:30+00:00 Numerical responses of an avian predator to prey fluctuations in a temperate latitude: breeders vs. entire population Panek, Marek 2016 http://dx.doi.org/10.1007/s10144-016-0563-0 http://link.springer.com/content/pdf/10.1007/s10144-016-0563-0.pdf http://link.springer.com/article/10.1007/s10144-016-0563-0/fulltext.html en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor http://www.springer.com/tdm Population Ecology volume 58, issue 4, page 549-555 ISSN 1438-3896 1438-390X journal-article 2016 crwiley https://doi.org/10.1007/s10144-016-0563-0 2024-05-03T11:51:44Z Abstract Distinct numerical responses of predators to fluctuations in the abundance of their prey are often observed in northern regions but occur more rarely in temperate latitudes. This statement is, however, mostly based on observations of breeding populations, while in some predators, for example in raptors, numerous non‐breeding floaters can occur. I estimated the breeding density and reproductive performance (nest survey) as well as the density of entire population (transects with distance sampling) of the common buzzard Buteo buteo in western Poland (52°N) in the years 2005–2014 to test the hypotheses that in temperate latitudes: (1) the breeding population of these birds does not show any numerical response, understood as annual changes in their abundance; (2) its reproductive success, however, changes with the abundance of main prey, the common vole Microtus arvalis and (3) hence the entire buzzard population (including potential immature floaters) present in a given area during the nesting period responds numerically with some time delay. The reproductive success of buzzards was positively correlated with their prey abundance. Contrary to my predictions, however, the breeding population of buzzards showed a slight numerical response with a 3‐year lag and the entire population tracked vole fluctuations without any time delay. The immediate numerical response of the entire buzzard population was probably caused by large‐scale movements of floaters. Such rapid numerical responses of some predators may contribute to the relative stability of prey populations in temperate latitudes compared to northern regions. Article in Journal/Newspaper Common vole Microtus arvalis Wiley Online Library Population Ecology 58 4 549 555 |
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Wiley Online Library |
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language |
English |
description |
Abstract Distinct numerical responses of predators to fluctuations in the abundance of their prey are often observed in northern regions but occur more rarely in temperate latitudes. This statement is, however, mostly based on observations of breeding populations, while in some predators, for example in raptors, numerous non‐breeding floaters can occur. I estimated the breeding density and reproductive performance (nest survey) as well as the density of entire population (transects with distance sampling) of the common buzzard Buteo buteo in western Poland (52°N) in the years 2005–2014 to test the hypotheses that in temperate latitudes: (1) the breeding population of these birds does not show any numerical response, understood as annual changes in their abundance; (2) its reproductive success, however, changes with the abundance of main prey, the common vole Microtus arvalis and (3) hence the entire buzzard population (including potential immature floaters) present in a given area during the nesting period responds numerically with some time delay. The reproductive success of buzzards was positively correlated with their prey abundance. Contrary to my predictions, however, the breeding population of buzzards showed a slight numerical response with a 3‐year lag and the entire population tracked vole fluctuations without any time delay. The immediate numerical response of the entire buzzard population was probably caused by large‐scale movements of floaters. Such rapid numerical responses of some predators may contribute to the relative stability of prey populations in temperate latitudes compared to northern regions. |
format |
Article in Journal/Newspaper |
author |
Panek, Marek |
spellingShingle |
Panek, Marek Numerical responses of an avian predator to prey fluctuations in a temperate latitude: breeders vs. entire population |
author_facet |
Panek, Marek |
author_sort |
Panek, Marek |
title |
Numerical responses of an avian predator to prey fluctuations in a temperate latitude: breeders vs. entire population |
title_short |
Numerical responses of an avian predator to prey fluctuations in a temperate latitude: breeders vs. entire population |
title_full |
Numerical responses of an avian predator to prey fluctuations in a temperate latitude: breeders vs. entire population |
title_fullStr |
Numerical responses of an avian predator to prey fluctuations in a temperate latitude: breeders vs. entire population |
title_full_unstemmed |
Numerical responses of an avian predator to prey fluctuations in a temperate latitude: breeders vs. entire population |
title_sort |
numerical responses of an avian predator to prey fluctuations in a temperate latitude: breeders vs. entire population |
publisher |
Wiley |
publishDate |
2016 |
url |
http://dx.doi.org/10.1007/s10144-016-0563-0 http://link.springer.com/content/pdf/10.1007/s10144-016-0563-0.pdf http://link.springer.com/article/10.1007/s10144-016-0563-0/fulltext.html |
genre |
Common vole Microtus arvalis |
genre_facet |
Common vole Microtus arvalis |
op_source |
Population Ecology volume 58, issue 4, page 549-555 ISSN 1438-3896 1438-390X |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor http://www.springer.com/tdm |
op_doi |
https://doi.org/10.1007/s10144-016-0563-0 |
container_title |
Population Ecology |
container_volume |
58 |
container_issue |
4 |
container_start_page |
549 |
op_container_end_page |
555 |
_version_ |
1800750302030200832 |