Populations in stable and variable habitats : Green and common sandpiper in a beaver-influenced landscape

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http://hdl.handle.net/10138/334344

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Nummi , P , Arzel , C & Sauramo , V 2021 , ' Populations in stable and variable habitats : Green and common sandpiper in a beaver-influenced landscape ' , Global Ecology and Conservation , vol. 28 , 01678 . https://doi.org/10.1016/j.gecco.2021.e01678

Title: Populations in stable and variable habitats : Green and common sandpiper in a beaver-influenced landscape
Author: Nummi, Petri; Arzel, Celine; Sauramo, Virva
Contributor: University of Helsinki, Department of Forest Sciences
University of Helsinki, Department of Forest Sciences
Date: 2021-08
Language: eng
Number of pages: 7
Belongs to series: Global Ecology and Conservation
ISSN: 2351-9894
URI: http://hdl.handle.net/10138/334344
Abstract: Stability of breeding habitat use and population variability was studied in two common wader species: green sandpiper Tringa ochropus and common sandpiper Actitis hypoleucos in a boreal lake area in southern Finland. The main natural driver of habitat disturbance in the area is an ecosystem engineer, the North American beaver Castor canadensis. We also studied the presence and abundance of green sandpipers before, during and after beaver-induced floods. In the studied landscape, the variable habitat created by beaver flooding appeared to have carrying capacity for a larger green sandpiper population than the more stable habitat for that of the common sandpiper. Common sandpipers made much use of the same lakes from year to year whereas the occupation of wetlands by the green sandpiper was more variable. The population of common sandpipers fluctuated more, although they inhabited the more stable environment. Green sandpiper pair numbers increased during beaver flooding, which suggests that they adapt rapidly to changes in breeding site availability. Some of the facilitating effects of the beaver appeared to remain 1-2 years after the flooding.
Subject: Actitis hypoleucos
Castor canadensis
Tringa ochropus
Facilitation
Flood
Population stability
ECOSYSTEM ENGINEER
CASTOR-CANADENSIS
TRINGA-OCHROPUS
SITE FIDELITY
LONG-TERM
WETLANDS
DUCKS
DISTURBANCE
DIVERSITY
PATCH
1181 Ecology, evolutionary biology
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