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Wildlife Research Wildlife Research Society
Ecology, management and conservation in natural and modified habitats
Table of Contents
Wildlife Research

Wildlife Research

Volume 49 Number 8 2022

WR21138Bayesian modelling reveals differences in long-term trends in the harvest of native and introduced species by recreational hunters in Australia

Paul D. Moloney, Andrew M. Gormley, Simon D. Toop, Jason S. Flesch, David M. Forsyth 0000-0001-5356-9573, David S. L. Ramsey and Jordan O. Hampton 0000-0003-0472-3241
pp. 673-685
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Recreational hunting is popular across Australia for native and introduced wildlife species but little is known about long-term trends in harvest. We assessed recreational harvest levels via hunter surveys from three groups of wildlife (deer, ducks and quail) over 11 years in Victoria, Australia. Our study revealed that harvest levels for introduced deer have increased markedly, but there has been little change for native ducks and quail. Changes in hunter numbers, behaviour and efficiency are important to monitor for sustainable wildlife use. Photograph by Steven Wade.

WR21135Power of faecal pellet count and camera trapping indices to monitor mammalian herbivore activity

Naomi E. Davis 0000-0002-5551-8822, Julian Di Stefano, Jim Whelan, John Wright, Lorraine Taylor, Graeme Coulson and Holly Sitters
pp. 686-697
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Efficient monitoring of changes in animal populations is essential for effective wildlife management. We compared the statistical power of faecal pellet counts and camera trapping to detect spatial and temporal changes in mammal activity levels. Indices derived from pellet count occurrence data can be used to simultaneously monitor multiple species where detection of medium to large effect sizes is adequate; however, using frequency indices derived from camera trapping maximises the statistical power of monitoring programs to detect changes in populations. Photograph by Matthew Hoskins (Parks Victoria).

WR21153Deltamethrin reduces survival of non-target small mammals

Amanda R. Goldberg 0000-0003-3094-8241, Dean E. Biggins, Shantini Ramakrishnan, Jonathan W. Bowser, Courtney J. Conway, David A. Eads and Jeffrey Wimsatt
pp. 698-708
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Insecticides are applied worldwide as a tool to control both wildlife and/or human diseases but we need to document the impact these chemicals have on non-target animals. We examined and discovered that deltamethrin (an insecticide used to control flea vectors of the plague bacterium) reduced survival of non-target small animals in three different study sites in the western United States. Insecticides are an important tool to conserve species threated by wildlife diseases, but we need to consider and evaluate their effects on non-target animals when making management decisions regarding the best methods to reduce disease prevalence. Photograph by Amanda R. Goldberg.

WR21091Increasing fire severity negatively affects greater glider density

Jarrah C. May-Stubbles, Ana Gracanin 0000-0002-3562-4804 and Katarina M. Mikac 0000-0002-5779-7351
pp. 709-718
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Increases in wildfire severity in Australia’s temperate forests is a major threat to forest-dependant species. Our study assessed the effect of differing levels of fire severity on the greater glider population density in southern New South Wales and found lowest densities in high fire-severity sites. We highlight the importance of low fire-severity sites as refuges in the short-term after wildfires. Photograph by Monica Knipler.

WR21169Patterns of livestock depredation by snow leopards and effects of intervention strategies: lessons from the Nepalese Himalaya

Marc Filla 0000-0001-7872-9449, Rinzin Phunjok Lama 0000-0002-7605-2443, Tim Filla 0000-0001-5628-8398, Marco Heurich 0000-0003-0051-2930, Niko Balkenhol 0000-0003-4921-5443, Matthias Waltert 0000-0001-7053-0291 and Igor Khorozyan 0000-0002-0657-7500
pp. 719-737
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Livestock depredation drives large carnivores into conflicts with humans and poses a major threat to snow leopards in Asia. This study in the Nepalese Himalaya, which assesses livestock depredation by snow leopards regarding suitable intervention strategies, shows an urgent need for improved herding practices, predator-proofing corrals, and deterrent applications. We recommend controlled experiments to assess the effectiveness of different interventions – and wide application of the most effective ones to promote human–snow leopard co-existence. Photograph by Marc Filla.

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Between 2008 and 2015, we observed and treated mares with the PZP-22 immunocontraceptive vaccine on two large wild horse ranges in the western USA. Mares were hand-treated during gathers or remotely darted. Population growth decreased linearly as the proportion of mares treated and vaccine effectiveness increased, with growth rates diminishing by as much as 74% relative to baseline levels. Photograph by Allen Rutberg.

WR21039Opportunistic datasets perform poorly in Ecological Niche Modelling: a case study from a polymorphic lizard

Roberto Sacchi 0000-0002-6199-0074, Marco Mangiacotti, Stefano Scali, Elisa Donati 0000-0002-5750-0466, Alan J. Coladonato and Marco A. L. Zuffi
pp. 749-759
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Sampling procedures not exactly designed for a specific purpose (‘opportunistic’ data) are commonly used to model species distribution and analyse niche segregation among species. By analysising niche overlap among morphs in a polymorphic lizard, we show how opportunistically collected data have serious limitations without properly accounting for the spatial structure of the data. We point out the need of being cautious in interpretation of ENMs when occurrences are spatially nested. Photography by Roberto Sacchi

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