Home About Browse Search
Svenska


Seeking greener pastures: crop selection by Greylag Geese (Anser anser) during the moulting season

Strong, Emily A. and Redpath, Steve and Montras Janer, Teresa and Elmberg, Johan and Månsson, Johan (2021). Seeking greener pastures: crop selection by Greylag Geese (Anser anser) during the moulting season. Ornis Fennica. 98 , 16-32
[Research article]

[img] PDF
834kB

Abstract

Over the last 40 years, many goose populations have recovered from historic lows and are now more numerous than ever. At the same time, geese have shifted from natural foraging habitats to securing most of their nutritional demands from agricultural fields, leading to crop damage and conflict with agriculture. We studied field use by Greylag Geese (Anser anser) in the agricultural landscape surrounding a main breeding and moulting lake in Sweden. From 2012 to 2016, weekly roadside surveys were conducted from May to July. Data were collected on goose numbers, crop type and sward height in agricultural fields. Using a compositional analysis, we demonstrate that Greylag Geese show a strong selection for ley and pasture fields compared to other crop types (rank order: ley/pasture > oat > barley > wheat > other crops). This selection was consistent across years and between pre- and post-moult. Aside from ley and pasture, no other crop types were selected for, as they were used less than expected given their availability. Irrespective of crop type, geese foraged predominantly on short (0-10 cm) swards. The strong selection for ley and pasture may have been driven by higher nutritional quality of short, managed grass swards relative to other available foods. This suggests that during the summer grass fields may be more vulnerable to damage compared to other crop types. Our study provides a deeper understanding of the ecology of Greylag Geese, which may be used to inform management strategies focused on mitigating crop damage and alleviating conflict.

Authors/Creators:Strong, Emily A. and Redpath, Steve and Montras Janer, Teresa and Elmberg, Johan and Månsson, Johan
Title:Seeking greener pastures: crop selection by Greylag Geese (Anser anser) during the moulting season
Series Name/Journal:Ornis Fennica
Year of publishing :2021
Volume:98
Page range:16-32
Number of Pages:17
Publisher:BIRDLIFE FINLAND
ISSN:0030-5685
Language:English
Publication Type:Research article
Article category:Scientific peer reviewed
Version:Published version
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Ecology
(A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Zoology
URN:NBN:urn:nbn:se:slu:epsilon-p-112166
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-112166
Additional ID:
Type of IDID
Web of Science (WoS)000644488800002
ID Code:24497
Faculty:NJ - Fakulteten för naturresurser och jordbruksvetenskap
Department:(NL, NJ) > Dept. of Ecology
(S) > Dept. of Ecology
Deposited By: SLUpub Connector
Deposited On:10 Jun 2021 11:43
Metadata Last Modified:10 Jun 2021 11:51

Repository Staff Only: item control page

Downloads

Downloads per year (since September 2012)

View more statistics

Downloads
Hits