Animal tracing with sulfur isotopes: Spatial segregation and climate variability in Africa likely contribute to population trends of a migratory songbird

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081766%3A_____%2F23%3A00565303" target="_blank" >RIV/68081766:_____/23:00565303 - isvavai.cz</a>

Alternative codes found

RIV/00216208:11310/23:10466944

Result on the web

<a href="https://besjournals.onlinelibrary.wiley.com/doi/10.1111/1365-2656.13848" target="_blank" >https://besjournals.onlinelibrary.wiley.com/doi/10.1111/1365-2656.13848</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1111/1365-2656.13848" target="_blank" >10.1111/1365-2656.13848</a>

Result language

angličtina

Original language name

Animal tracing with sulfur isotopes: Spatial segregation and climate variability in Africa likely contribute to population trends of a migratory songbird

Original language description

Climatic conditions affect animals but range-wide impacts at the population level remain largely unknown, especially in migratory species. However, studying climate–population relationships is still challenging in small migrants due to a lack of efficient and cost-effective geographic tracking method. Spatial distribution patterns of environmental stable isotopes (so called ‘isoscapes’) generally overcome these limitations but none of the currently available isoscapes provide a substantial longitudinal gradient in species-rich sub-Saharan Africa. In this region, sulphur (δ34S) has not been sufficiently explored on a larger scale. We developed a δ34S isoscape to trace animal origins in sub-Saharan Africa by coupling known-origin samples from tracked migratory birds with continental remotely sensed environmental data building on environment–δ34S relationships using a flexible machine learning technique. Furthermore, we link population-specific nonbreeding grounds with interannual climatic variation that might translate to breeding population trends. The predicted δ34S isotopic map featured east–west and coast-to-inland isotopic gradients and was applied to predict nonbreeding grounds of three breeding populations of Eurasian Reed Warblers Acrocephalus scirpaceus with two distinct migratory phenotypes. Breeding populations as well as migratory phenotypes exhibited large-scale segregation within the African nonbreeding range. These regions also differed substantially in the interannual climatic variation, with higher interannual variability in the eastern part of the range during 2001–2012. Over the same period, the eastern European breeding population seemed to have experienced a more steep decline in population size. The link between migratory patterns and large-scale climatic variability appears important to better understand population trajectories in many declining migratory animals. We believe animal tracing using sulphur isotopes will facilitate these efforts and offers manifold ecological and forensic applications in the biodiversity hotspot of sub-Saharan Africa.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10615 - Ornithology

Project

<a href="/en/project/GA20-00648S" target="_blank" >GA20-00648S: Integrating migration patterns, phenology, year-round habitat use and demography to understand drivers of population dynamics in migratory birds</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2023

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Journal of Animal Ecology

ISSN

0021-8790

e-ISSN

1365-2656

Volume of the periodical

92

Issue of the periodical within the volume

7

Country of publishing house

GB - UNITED KINGDOM

Number of pages

12

Pages from-to

1320-1331

UT code for WoS article

000890355500001

EID of the result in the Scopus database

2-s2.0-85142743883