Integrated Population Modeling for White‐Tailed Deer in Saskatchewan, Canada

Messmer, David J.; Henderson, Allison E.; Whiklo, Todd M.; Conkin, Katherine R.

doi:10.1002/jwmg.21918

Cited by 6 publications

(4 citation statements)

References 49 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To test the effectiveness of recovery actions, we estimated population demographic vital rates, population growth (λ), and population abundances before and after implementation of recovery actions using an integrated population model (IPM; Besbeas et al, 2002 ; Brooks et al, 2004 ; Messmer et al, 2020 ; Schaub & Kéry, 2012 ) adapted from a recently developed model for caribou in Jasper National Park that uses a two‐stage approach (Moeller et al, 2021 ). Integrated population models provide a statistical framework to integrate a combination of demographic data types with varying levels of certainty to estimate population growth and demographic parameters (Schaub & Abadi, 2011 ).…”

Section: Methodsmentioning

confidence: 99%

Demographic responses of nearly extirpated endangered mountain caribou to recovery actions in Central British Columbia

McNay¹,

Lamb

Giguere³

et al. 2022

Ecological Applications

View full text Add to dashboard Cite

Recovering endangered species is a difficult and often controversial task that challenges status quo land uses. Southern Mountain caribou are a threatened ecotype of caribou that historically ranged in southwestern Canada and northwestern USA and epitomize the tension between resource extraction, biodiversity conservation, and Indigenous Peoples' treaty rights. Human-induced habitat alteration is considered the ultimate cause of caribou population declines, whereby an increased abundance of primary prey-such as moose and deer-elevates predator populations and creates unsustainable caribou mortality. Here we focus on the Klinse-Za and Quintette subpopulations, part of the endangered Central Group of Southern Mountain caribou in British Columbia. These subpopulations were trending toward immediate extirpation until a collaborative group initiated recovery by implementing two short-term recovery actions. We test the effectiveness of these recovery actionsmaternity penning of adult females and their calves, and the reduction of a primary predator, wolves-in increasing vital rates and population growth.Klinse-Za received both recovery actions, whereas Quintette only received wolf reductions, providing an opportunity to test efficacy between recovery actions. Between 1995 and 2021, we followed 162 collared female caribou for 414 animal-years to estimate survival and used aerial counts to estimate population abundance and calf recruitment. We combined these data in an integrated population model to estimate female population growth, total population abundance, and recovery action effectiveness. Results suggest that the subpopulations were declining rapidly (λ = 0.90-0.93) before interventions and would have been functionally extirpated (<10 animals) within 10-15 years. Wolf reduction increased population growth rates by ~0.12 for each subpopulation.Wolf reduction halted the decline of Quintette caribou and allowed them to increase (λ = 1.05), but alone would have only stabilized the Klinse-Za

show abstract

Section: Methodsmentioning

confidence: 99%

Demographic responses of nearly extirpated endangered mountain caribou to recovery actions in Central British Columbia

McNay¹,

Lamb

Giguere³

et al. 2022

Ecological Applications

View full text Add to dashboard Cite

show abstract

“…This is the first study to analyze large‐scale abundance and demographic rate estimates for mammal species within an IPM framework, incorporating predator–prey interactions, and habitat and human factors. Furthermore, our case study of deer and coyotes is the first published application of an IPM for deer in the United States (but see Messmer et al, 2020 from Canada). Our population modeling approach provides a more mechanistic understanding of predator–prey relationships than is possible by linear models of predator and prey densities (e.g., Ponti et al, 2021).…”

Section: Discussionmentioning

confidence: 99%

Urbanization and primary productivity mediate the predator–prey relationship between deer and coyotes

Parsons,

Pacifici,

Shaw

et al. 2024

Ecosphere

View full text Add to dashboard Cite

Predator–prey interactions are important for regulating populations and structuring communities but are affected by many dynamic, complex factors across large scales, making them difficult to study. Integrated population models (IPMs) offer a potential solution to understanding predator–prey relationships by providing a framework for leveraging many different datasets and testing hypotheses about interactive factors. Here, we evaluate the coyote–deer (Canis latrans–Odocoileus virginianus) predator–prey relationship across the state of North Carolina (NC). Because both species have similar habitat requirements and may respond to human disturbance, we considered net primary productivity (NPP) and urbanization as key mediating factors. We estimated deer survival and fecundity by integrating camera trap, harvest, and biological and hunter observation datasets into a two‐stage, two‐sex Lefkovich population projection matrix. We allowed survival and fecundity to vary as functions of urbanization, NPP, and coyote density, and projected abundance forward to test eight hypothetical scenarios. We estimated initial average deer and coyote densities to be 11.83 (95% CI: 5.64, 20.80) and 0.46 (95% CI: 0.02, 1.45) individuals/km2, respectively. We found a negative, though highly uncertain, relationship between the current levels of coyote density and deer fecundity in most areas that became more negative under hypothetical conditions of lower NPP or higher urbanization, leading to lower projected deer abundances. Though not conclusive, our results indicate the possibility that coyotes could have stronger effects on deer populations in NC if their densities rise, but primarily in less productive and/or more suburban habitats. Our case study provides an example of how IPMs can be used to better understand the complex relationships between predator and prey under changing environmental conditions.

show abstract

“…Integrated population models have been used extensively in fisheries (Wilberg et al 2005;Punt et al 2010;Brenden et al 2012;Goethel et al 2015;Jacobson et al 2020;Moremede et al 2020) and wildlife management (Rhodes et al 2011;Arnold et al 2018;Horne et al 2019;Messmer et al 2020). However, their use is typically FIGURE 8.…”

Section: Integrated Population Model With Batch-marking Datamentioning

confidence: 99%

Incorporating Batch Mark–Recapture Data into an Integrated Population Model of Brown Trout

Doll

Wood

Goodfred

et al. 2021

N American J Fish Manag

View full text Add to dashboard Cite

Brown Trout Salmo trutta are a popular sport fish, and numerous populations that are unable to successfully reproduce are maintained with supplemental stockings in waters with habitat that can support individual survival (e.g., appropriate thermal refuge). Long-term management of these populations requires understanding of their population dynamics to determine harvest restrictions and stocking rates. The objective of this research was to describe population dynamics of a tailrace Brown Trout fishery using an integrated population model (IPM) that incorporates monitoring data and low-cost batch mark-recapture data. Further, we evaluated the relationship between water temperature and survival. We hypothesized that annual survival would be lower at high water temperature. Additionally, we used the IPM to project the Brown Trout population based on two different management scenarios (no minimum length limit with seven-fish bag limit and 356-mm-TL minimum length limit with two-fish bag limit). Management outcomes explored include total population size, age frequencies, and length indices. The results of this study suggested that recreational harvest and water temperature were the two main factors influencing the Brown Trout population. Water temperature was found to be a major factor in determining survival of Brown Trout. Simulations under various minimum length limits indicated the minimum length limit of 356 mm TL and a two-fish bag limit will substantially increase the population size but with a reduction in length indices. Integrated population models have been applied historically to large systems with significant amounts of data. Estimates of survival and detection are important components of an IPM; to our knowledge, the IPM used here is the first to integrate batch mark-recapture data to estimate these key parameters. The data and modeling approach used here demonstrate the value of using novel statistical methods to make the most efficient use of low-cost survey data.Having been introduced outside of their native range, Brown Trout Salmo trutta are a popular sport fish throughout the world. They are not native to the Appalachian Mountains, but numerous fishable populations are sustained via supplemental stockings in streams that provide appropriate habitat. The coolwater and coldwater discharges from dams provide the unique habitat Brown Trout require to survive and, in some cases, successfully reproduce. The importance of these fisheries to the public has been evaluated by several states, and it was determined that southeastern trout anglers target these resources frequently and generate significant economic

show abstract

Integrated Population Modeling for White‐Tailed Deer in Saskatchewan, Canada

Cited by 6 publications

References 49 publications

Demographic responses of nearly extirpated endangered mountain caribou to recovery actions in Central British Columbia

Demographic responses of nearly extirpated endangered mountain caribou to recovery actions in Central British Columbia

Urbanization and primary productivity mediate the predator–prey relationship between deer and coyotes

Incorporating Batch Mark–Recapture Data into an Integrated Population Model of Brown Trout

Contact Info

Product

Resources

About