Multiple components of environmental change drive populations of breeding waders in seminatural grasslands - CNRS - Centre national de la recherche scientifique Accéder directement au contenu
Article Dans Une Revue Ecology and Evolution Année : 2018

Multiple components of environmental change drive populations of breeding waders in seminatural grasslands

Résumé

Environments are rapidly changing due to climate change, land use, intensive agriculture , and the impact of hunting on predator populations. Here, we analyzed long-term data recorded during 1928-2014 on the size of breeding populations of waders at two large nature reserves in Denmark, Vejlerne and Tipperne, to determine the effects of components of environmental change on breeding populations of waders. Environmental variables and counts of waders were temporally autocorrelated, and we used generalized least square (GLS) by incorporating the first-order autoregres-sive correlation structure in the analyses. We attempted to predict the abundance of waders for short-term trends for two nature reserves (35 years) and for long-term trends for one nature reserve (86 years), using precipitation, temperature, nutrients, abundance of foxes Vulpes vulpes, area grazed, and number of cattle. There was evidence of impacts of nutrients, climate (long-term changes in temperature and precipitation), grazing, mowing, and predation on bird populations. We used standard random effects meta-analyses weighted by (N-3) to quantify these mean effects. There was no significant difference in effect size among species, while mean effect size differed consistently among environmental factors, and the interaction between effect size for species and environmental factors was also significant. Thus, environmental factors affected the different species differently. Mean effect size was the largest at +0.20 for rain, +0.11 for temperature, −0.09 for fox abundance, and −0.03 for number of cattle, while there was no significant mean effect for fertilizer, area grazed, and year. Effect sizes for two short-term time series from Tipperne and Vejlerne were positively correlated as were effect sizes for short-term and long-term time series at Tipperne. This implies that environmental factors had consistent effects across large temporal and spatial scales.
Fichier principal
Vignette du fichier
Laursen_et_al-2018-Ecology_and_Evolution.pdf (595.88 Ko) Télécharger le fichier
Origine : Fichiers éditeurs autorisés sur une archive ouverte
Loading...

Dates et versions

hal-02393720 , version 1 (04-12-2019)

Identifiants

Citer

Karsten Laursen, Javier Balbontin, Ole Thorup, Henrik Haaning Nielsen, Tommy Asferg, et al.. Multiple components of environmental change drive populations of breeding waders in seminatural grasslands. Ecology and Evolution, 2018, 8 (21), pp.10489 - 10496. ⟨10.1002/ece3.4514⟩. ⟨hal-02393720⟩
34 Consultations
31 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More