Kevin W. Dufour, Joshua L. Dooley, James O. Leafloor, Theodore C. Nichols
{"title":"Hunter harvest affects survival of Atlantic brant","authors":"Kevin W. Dufour, Joshua L. Dooley, James O. Leafloor, Theodore C. Nichols","doi":"10.1002/jwmg.70067","DOIUrl":"10.1002/jwmg.70067","url":null,"abstract":"<p>Adult survival is a key driver of population dynamics in long-lived species like geese. To implement effective and sustainable hunting regulations, managers need accurate estimates of survival and knowledge about the impacts of hunter harvest, particularly the extent to which this mortality is compensatory or additive to other sources. Atlantic brant (<i>Branta bernicla hrota</i>) are among the smallest of the North American goose populations and are vulnerable from a conservation perspective because of their limited breeding and wintering ranges, variable and low productivity, and reliance on coastal marine ecosystems. Additionally, the effects of hunter harvest on Atlantic brant survival are not fully known. We conducted both dead recovery only and joint live-dead mark-recapture analyses of Atlantic brant banded on Baffin Island and Southampton Island, Nunavut, Canada, during 2000–2018 to provide contemporary survival estimates and determine the extent to which hunter harvest was compensatory or additive. Survival probabilities of juveniles were lower and more variable (<span></span><math>\u0000 <semantics>\u0000 <mrow>\u0000 \u0000 <mrow>\u0000 <mover>\u0000 <mi>x</mi>\u0000 \u0000 <mo>¯</mo>\u0000 </mover>\u0000 </mrow>\u0000 </mrow>\u0000 </semantics></math> = 0.54 ± 0.13 [SE]; range = 0.33–0.88) than adults (<span></span><math>\u0000 <semantics>\u0000 <mrow>\u0000 \u0000 <mrow>\u0000 <mover>\u0000 <mi>x</mi>\u0000 \u0000 <mo>¯</mo>\u0000 </mover>\u0000 </mrow>\u0000 </mrow>\u0000 </semantics></math> = 0.84 ± 0.06; 0.74–0.95) and were influenced to a greater extent by non-harvest mortality. We found evidence of harvest additivity in adult Atlantic brant. Annual harvest of adult Atlantic brant explained 75% of the annual variability in adult survival probabilities, and the estimated process correlation between adult annual survival and recovery probabilities from a Brownie dead recovery model was negative (ρ = −0.34; SD = 0.32). Compared to other North American goose populations, Atlantic brant have lower harvest potential and less ability to compensate for hunter harvest. To ensure harvest remains sustainable, we suggest that managers should account for minimal harvest compensation in adult brant when selecting hunting regulations (i.e., season length and daily bag limits). Lastly, we encourage the use of joint live-dead models when possible because they provide greater insight into demographic processes and improved precision and accuracy on parameter estimates, particularly for juveniles.</p>","PeriodicalId":17504,"journal":{"name":"Journal of Wildlife Management","volume":"89 7","pages":""},"PeriodicalIF":1.9,"publicationDate":"2025-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144869324","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Megan E. Gray, Liam S. Corcoran, Scott R. McWilliams
{"title":"Under the umbrella: Does management for American woodcock increase reproductive success of a declining songbird?","authors":"Megan E. Gray, Liam S. Corcoran, Scott R. McWilliams","doi":"10.1002/jwmg.70066","DOIUrl":"10.1002/jwmg.70066","url":null,"abstract":"<p>The umbrella species concept is a popular management approach that assumes conservation efforts for one species confer benefits to others, although most assessments of such benefits to non-target species only measure presence and abundance. We compared the density, territory size, and key metrics of reproductive success for eastern towhee (<i>Pipilo erythrophthalmus</i>) between study sites that differed in relative likelihood of selection (RLS), as determined by a resource selection function (RSF), for American woodcock (<i>Scolopax minor</i>), a proposed umbrella species for early successional habitat in eastern North America. Higher woodcock RLS sites had higher densities of singing male eastern towhees, which in turn defended smaller territories. Nest survival and provisioning rates of towhees were not related to woodcock RLS, whereas towhee nestlings at higher RLS sites grew to a greater size. Eastern towhees largely benefited from forest management aimed at American woodcock; towhees in higher woodcock RLS sites will likely occur in greater densities and raise chicks with higher fledging masses, potentially increasing recruits to the population.</p>","PeriodicalId":17504,"journal":{"name":"Journal of Wildlife Management","volume":"89 7","pages":""},"PeriodicalIF":1.9,"publicationDate":"2025-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://wildlife.onlinelibrary.wiley.com/doi/epdf/10.1002/jwmg.70066","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144869326","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Risk metrics vs. rat metrics: An alternative approach to measuring and managing urban rat infestations","authors":"Chelsea G. Himsworth, Kaylee A. Byers","doi":"10.1002/jwmg.70052","DOIUrl":"10.1002/jwmg.70052","url":null,"abstract":"<p>Urban Norway rats (<i>Rattus norvegicus</i>) and black rats (<i>R. rattus</i>) can have diverse and significant negative impacts on urban landscapes and residents. A variety of different approaches have been developed for measuring rat populations to support management efforts. However, the utility of these approaches has been limited, as they account for the magnitude but not the consequences of infestations and thus may not reflect the harm that cities are ultimately seeking to mitigate. We propose an alternative approach through the development of a rat risk index, which would add novel measures of rat-related impacts to existing measures of rat abundance. Such an index would be particularly useful for goal setting, program evaluation, and prioritization in the context of municipal rat management programs.</p>","PeriodicalId":17504,"journal":{"name":"Journal of Wildlife Management","volume":"89 6","pages":""},"PeriodicalIF":1.9,"publicationDate":"2025-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/jwmg.70052","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144589567","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Issue Information - Cover","authors":"","doi":"10.1002/jwmg.22611","DOIUrl":"10.1002/jwmg.22611","url":null,"abstract":"","PeriodicalId":17504,"journal":{"name":"Journal of Wildlife Management","volume":"89 6","pages":""},"PeriodicalIF":1.9,"publicationDate":"2025-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/jwmg.22611","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144589566","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Yellowstone's Birds: Diversity and Abundance in the World's First National Park By Douglas W. Smith, Lauren E. Walker, and Katherine E. Duffy, editors. Princeton, New Jersey: Princeton University Press. 2023. pp. 304. $35.00 (hardback). ISBN 9780691217833","authors":"Ridhi Chandarana","doi":"10.1002/jwmg.70063","DOIUrl":"10.1002/jwmg.70063","url":null,"abstract":"","PeriodicalId":17504,"journal":{"name":"Journal of Wildlife Management","volume":"89 7","pages":""},"PeriodicalIF":1.9,"publicationDate":"2025-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144869203","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Ticks: Biology, Ecology, and Diseases By \u0000 Nicholas Johnson, London, United Kingdom: Academic Press. 2023. pp. 244. $150. ISBN 978-0-323-91148-1","authors":"Joseph D. T. Savage","doi":"10.1002/jwmg.70062","DOIUrl":"10.1002/jwmg.70062","url":null,"abstract":"","PeriodicalId":17504,"journal":{"name":"Journal of Wildlife Management","volume":"89 7","pages":""},"PeriodicalIF":1.9,"publicationDate":"2025-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144869485","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}