Next Article in Journal
Factors Influencing the Distribution of Invasive Hybrid (Myriophyllum Spicatum x M. Sibiricum) Watermilfoil and Parental Taxa in Minnesota
Previous Article in Journal
Evidence for Plio-Pleistocene Duck Mussel Refugia in the Azov Sea River Basins
Open AccessArticle

Trappings of Success: Predator Removal for Duck Nest Survival in Alberta Parklands

Department of Biological Sciences, University of Alberta, Edmonton, AB T6G 2E9, Canada
*
Author to whom correspondence should be addressed.
Diversity 2020, 12(3), 119; https://doi.org/10.3390/d12030119
Received: 10 February 2020 / Revised: 14 March 2020 / Accepted: 15 March 2020 / Published: 24 March 2020
Nest survival is most limited by nest predation, which often is increased by anthropogenic causes including habitat fragmentation, mesopredator release and predator subsidies. In mallards and other upland-nesting duck species in the North American prairies, the rate of nest survival is the vital rate most influential to population dynamics, with 15%–20% survival required for maintenance of stable populations. Predator removal during the nesting season has increased duck nest survival on township-sized (9324 ha) areas of agricultural ecosystems in eastern locations of the prairie pothole region (PPR). However, predator removal has not been evaluated in western parkland habitats of the PPR where three-dimensional structure of vegetation is considerably greater. During 2015–2017, we evaluated nest survival on control and predator-removal plots at two study areas in the parklands of central Alberta, Canada. In the second year of the study, we transposed predator removal to control for habitat effects. Estimates of 34-day nest survival did not significantly differ between trapped ( x ¯ = 20.9%, 95% CI = 13.2%–33.7%) and control ( x ¯ = 17.8%, 95% CI = 10.5%–30.0%) plots in any year. We do not recommend predator removal be continued in Alberta parklands due to its ineffectiveness at improving duck nest survival at the local scale. View Full-Text
Keywords: Anas spp.; nest survival; nest predation; predator removal; prairie pothole region; compensatory predation Anas spp.; nest survival; nest predation; predator removal; prairie pothole region; compensatory predation
Show Figures

Figure 1

MDPI and ACS Style

Blythe, E.M.; Boyce, M.S. Trappings of Success: Predator Removal for Duck Nest Survival in Alberta Parklands. Diversity 2020, 12, 119.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Search more from Scilit
 
Search
Back to TopTop