Geographical variation in reproductive investment across avian assemblages in Europe: Effects of environmental drivers differ between altricial and precocial species

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F17%3A10367503" target="_blank" >RIV/00216208:11310/17:10367503 - isvavai.cz</a>

Alternative codes found

RIV/00216208:11620/17:10367503

Result on the web

<a href="http://onlinelibrary.wiley.com/doi/10.1111/jav.01131/full" target="_blank" >http://onlinelibrary.wiley.com/doi/10.1111/jav.01131/full</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1111/jav.01131" target="_blank" >10.1111/jav.01131</a>

Result language

angličtina

Original language name

Geographical variation in reproductive investment across avian assemblages in Europe: Effects of environmental drivers differ between altricial and precocial species

Original language description

Reproductive traits provide information about the ways by which available resources are allocated during breeding. We tested for environmental drivers of large scale geographical patterns in assemblage mean clutch size, number of broods and overall reproductive investment per breeding season in European birds. We combined data about geographical distribution with published information about reproductive traits, and calculated mean trait values for avian assemblages occurring in 50 x 50 km grid cells. In total, we employed data from 499 species and 2059 assemblages. As the time available for breeding and the amount of food limit the reproductive effort, we related the geographical variation in reproductive traits to the length of breeding season, normalized difference vegetation index (NDVI) as a surrogate of resource availability, and its seasonality. Geographical patterns in traits may differ between reproductive modes, thus we performed the analyses separately for altricial Passerines (N=203) and precocial non-passerine species (N=164) and controlled for the effect of taxonomy. Large clutches dominated in areas with high NDVI and, in precocial birds, also in areas with high annual seasonality and a long breeding season. High number of broods and high overall reproductive investment dominated in areas with a long breeding season, and high number of broods was found also in areas with low annual seasonality, but only in precocial species. High overall reproductive investment dominated in highly productive areas and also in areas with low annual seasonality in both groups. The increase in reproductive investment is caused mostly by an increase in the number of broods related to the length of season and partly by increase in clutch size related to NDVI. Additionally, we found a negative correlation between clutch size and the number of broods in Passerines, which might suggest a trade-off between these traits. Processes behind spatial patterns in reproductive traits differ between altricial and precocial species.

Czech name

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Czech description

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Type

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

CEP classification

—

OECD FORD branch

10613 - Zoology

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2017

Confidentiality

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

Name of the periodical

Journal of Avian Biology

ISSN

0908-8857

e-ISSN

—

Volume of the periodical

48

Issue of the periodical within the volume

7

Country of publishing house

DK - DENMARK

Number of pages

12

Pages from-to

976-987

UT code for WoS article

000407250900008

EID of the result in the Scopus database

2-s2.0-85018400812