Movement of Canada Geese in urban and rural areas of Iowa, USA

Avian Conservation and Ecology

article

Benjamin Z. Luukkonen¹  Robert W. Klaver³  Orrin E. Jones III⁴ 

[1]Iowa Cooperative Fish and Wildlife Research Unit, Iowa State University

[2]Department of Fisheries and Wildlife, Michigan State University

[3]U.S. Geological Survey, Iowa Cooperative Fish and Wildlife Research Unit, Iowa State University

[4]Iowa Department of Natural Resources

关键词: Branta canadensis;    habitat selection;    home range;    hunter harvest;    migration;    Mississippi Flyway;    urban;   

DOI  :  10.5751/ACE-02128-170127

学科分类：口腔科学

来源: Resilience Alliance Publications

【 摘 要 】

Temperate-breeding Canada Goose (Branta canadensis maxima) abundance has increased to previously unrecorded levels, providing social, ecological, and economic value. However, there are also costs associated with abundant Canada Geese. Although hunter harvest is a valued, sustainable use of Canada Geese, the adaptability of geese to urban areas may result in lower susceptibility of geese to hunters, potentially reducing the contribution of hunter harvest to conflict reduction. Our goal was to compare movement of geese marked in urban and rural areas to assess efficacy of hunter harvest in managing urban goose populations. We marked 71 adult female Canada Geese during brood-rearing with GPS-GSM transmitters in urban (n = 45) and rural (n = 26) locations in Iowa, USA to monitor movement during the 2018-19 and 2019-20 Mississippi Flyway goose hunting season frameworks. We estimated the mean proportion of locations each group was available for hunter harvest and examined factors affecting home range areas using generalized linear mixed models. Additionally, we estimated habitat selection of urban- and rural-marked geese using a step-selection analysis. Urban geese had a lower proportion of locations in areas available to hunters (0.07 [95% CI: 0.04-0.13]) than rural geese (0.56 [95% CI: 0.34-0.76]), but median home range area was similar for each group and decreased in size from autumn to late winter. Canada Geese marked in urban areas were more likely to select developed areas and less likely to select wetlands than rural geese, and they had high selection of agricultural fields within city limits during goose hunting seasons. Although Canada Geese breeding in urban areas may be less available for hunter harvest, movement data show when and where opportunity exists to increase harvest susceptibility. Canada Goose management could require actions in addition to hunter harvest to achieve goals in urban areas.

【 授权许可】

CC BY