High turn-over rates at the upper range limit and elevational source-sink dynamics in a widespread songbird

Abstract The formation of an upper distributional range limit for species breeding along mountain slopes is often based on environmental gradients resulting in changing demographic rates towards high elevations. However, we still lack an empirical understanding of how the interplay of demographic pa...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Martin U. Grüebler, Johann von Hirschheydt, Fränzi Korner-Nievergelt
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/f1d369d8a74749b0a9c4603578b721b7
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:f1d369d8a74749b0a9c4603578b721b7
record_format	dspace
spelling	oai:doaj.org-article:f1d369d8a74749b0a9c4603578b721b72021-12-02T17:24:12ZHigh turn-over rates at the upper range limit and elevational source-sink dynamics in a widespread songbird10.1038/s41598-021-98100-x2045-2322https://doaj.org/article/f1d369d8a74749b0a9c4603578b721b72021-09-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-98100-xhttps://doaj.org/toc/2045-2322Abstract The formation of an upper distributional range limit for species breeding along mountain slopes is often based on environmental gradients resulting in changing demographic rates towards high elevations. However, we still lack an empirical understanding of how the interplay of demographic parameters forms the upper range limit in highly mobile species. Here, we study apparent survival and within-study area dispersal over a 700 m elevational gradient in barn swallows (Hirundo rustica) by using 15 years of capture-mark-recapture data. Annual apparent survival of adult breeding birds decreased while breeding dispersal probability of adult females, but not males increased towards the upper range limit. Individuals at high elevations dispersed to farms situated at elevations lower than would be expected by random dispersal. These results suggest higher turn-over rates of breeding individuals at high elevations, an elevational increase in immigration and thus, within-population source-sink dynamics between low and high elevations. The formation of the upper range limit therefore is based on preference for low-elevation breeding sites and immigration to high elevations. Thus, shifts of the upper range limit are not only affected by changes in the quality of high-elevation habitats but also by factors affecting the number of immigrants produced at low elevations.Martin U. GrüeblerJohann von HirschheydtFränzi Korner-NievergeltNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-10 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Martin U. Grüebler Johann von Hirschheydt Fränzi Korner-Nievergelt High turn-over rates at the upper range limit and elevational source-sink dynamics in a widespread songbird
description	Abstract The formation of an upper distributional range limit for species breeding along mountain slopes is often based on environmental gradients resulting in changing demographic rates towards high elevations. However, we still lack an empirical understanding of how the interplay of demographic parameters forms the upper range limit in highly mobile species. Here, we study apparent survival and within-study area dispersal over a 700 m elevational gradient in barn swallows (Hirundo rustica) by using 15 years of capture-mark-recapture data. Annual apparent survival of adult breeding birds decreased while breeding dispersal probability of adult females, but not males increased towards the upper range limit. Individuals at high elevations dispersed to farms situated at elevations lower than would be expected by random dispersal. These results suggest higher turn-over rates of breeding individuals at high elevations, an elevational increase in immigration and thus, within-population source-sink dynamics between low and high elevations. The formation of the upper range limit therefore is based on preference for low-elevation breeding sites and immigration to high elevations. Thus, shifts of the upper range limit are not only affected by changes in the quality of high-elevation habitats but also by factors affecting the number of immigrants produced at low elevations.
format	article
author	Martin U. Grüebler Johann von Hirschheydt Fränzi Korner-Nievergelt
author_facet	Martin U. Grüebler Johann von Hirschheydt Fränzi Korner-Nievergelt
author_sort	Martin U. Grüebler
title	High turn-over rates at the upper range limit and elevational source-sink dynamics in a widespread songbird
title_short	High turn-over rates at the upper range limit and elevational source-sink dynamics in a widespread songbird
title_full	High turn-over rates at the upper range limit and elevational source-sink dynamics in a widespread songbird
title_fullStr	High turn-over rates at the upper range limit and elevational source-sink dynamics in a widespread songbird
title_full_unstemmed	High turn-over rates at the upper range limit and elevational source-sink dynamics in a widespread songbird
title_sort	high turn-over rates at the upper range limit and elevational source-sink dynamics in a widespread songbird
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/f1d369d8a74749b0a9c4603578b721b7
work_keys_str_mv	AT martinugruebler highturnoverratesattheupperrangelimitandelevationalsourcesinkdynamicsinawidespreadsongbird AT johannvonhirschheydt highturnoverratesattheupperrangelimitandelevationalsourcesinkdynamicsinawidespreadsongbird AT franzikornernievergelt highturnoverratesattheupperrangelimitandelevationalsourcesinkdynamicsinawidespreadsongbird
_version_	1718380942947516416

High turn-over rates at the upper range limit and elevational source-sink dynamics in a widespread songbird

Ejemplares similares