Group density, disease, and season shape territory size and overlap of social carnivores

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Dublin Core

Title

Group density, disease, and season shape territory size and overlap of social carnivores

Description

  1. The spatial organization of a population can influence the spread of information, behaviour and pathogens. Group territory size and territory overlap and components of spatial organization, provide key information as these metrics may be indicators of habitat quality, resource dispersion, contact rates and environmental risk (e.g. indirectly transmitted pathogens). Furthermore, sociality and behaviour can also shape space use, and subsequently, how space use and habitat quality together impact demography.
  2. Our study aims to identify factors shaping the spatial organization of wildlife populations and assess the impact of epizootics on space use. We further aim to explore the mechanisms by which disease perturbations could cause changes in spatial organization.
  3. Here we assessed the seasonal spatial organization of Serengeti lions and Yellowstone wolves at the group level. We use network analysis to describe spatial organization and connectivity of social groups. We then examine the factors predicting mean territory size and mean territory overlap for each population using generalized additive models.
  4. We demonstrate that lions and wolves were similar in that group-level factors, such as number of groups and shaped spatial organization more than population-level factors, such as population density. Factors shaping territory size were slightly different than factors shaping territory overlap; for example, wolf pack size was an important predictor of territory overlap, but not territory size. Lion spatial networks were more highly connected, while wolf spatial networks varied seasonally. We found that resource dispersion may be more important for driving territory size and overlap for wolves than for lions. Additionally, canine distemper epizootics may have altered lion spatial organization, highlighting the importance of including infectious disease epizootics in studies of behavioural and movement ecology.
  5. We provide insight about when we might expect to observe the impacts of resource dispersion, disease perturbations, and other ecological factors on spatial organization. Our work highlights the importance of monitoring and managing social carnivore populations at the group level. Future research should elucidate the complex relationships between demographics, social and spatial structure, abiotic and biotic conditions and pathogen infections.

Bibliographic Citation

Brandell, E. E., N. M. Fountain‐Jones, M. L. Gilbertson, P. C. Cross, P. J. Hudson, D. W. Smith, D. R. Stahler, C. Packer, and M. E. Craft. 2021. Group density, disease, and season shape territory size and overlap of social carnivores. Journal of Animal Ecology, 90(1):87-101. https://doi.org/10.1111/1365-2656.13294

Creator

Brandell, Ellen E.
Fountain-Jones, Nicholas M.
Gilbertson, Marie L. J.
Cross, Paul C.
Hudson, Peter J.
Smith, Douglas W.
Stahler, Daniel R.
Packer, Craig
Craft, Meggan E.

Subject

Resource dispersion
Wolf
Lion
Spatial organization
Territoriality

Extent

15 pages

Type

Article

Format

application/pdf

Language

English

Is Part Of

Journal of Animal Ecology

Date Accepted

2020/05/22

Date Issued

2020/07/12

Date Submitted

2019/11/07

Collection

Citation

Brandell, Ellen E. et al., “Group density, disease, and season shape territory size and overlap of social carnivores,” CPW Digital Collections, accessed February 27, 2024, https://cpw.cvlcollections.org/items/show/394.