Author:
Gamelon Marlène,Baubet Éric,Besnard Aurélien,Gaillard Jean-Michel,Lebreton Jean-Dominique,Touzot Laura,Veylit Lara,Gimenez Olivier
Abstract
AbstractMany populations are affected by hunting or fishing. Models designed to assess the sustainability of harvest management require accurate estimates of demographic parameters (e.g. survival, reproduction) hardly estimable with limited data collected on exploited populations. The joint analysis of different data sources with integrated population models (IPM) is an optimal framework to obtain reliable estimates for parameters usually difficult to estimate, while accounting for imperfect detection and observation error. The IPM built so far for exploited populations have integrated count-based surveys and catch-at-age data into ageclass structured population models. But the age of harvested individuals is difficult to assess and often not recorded, and population counts are often not performed on a regular basis, limiting their use for the monitoring of exploited populations.Here, we propose an IPM that makes efficient use of data commonly collected in exploited marine and terrestrial populations of vertebrates. As individual measures of body mass at both capture and death are often collected in fish and terrestrial game species, our model integrates capture-mark-recapture-recovery data and data collected at death into a body mass-structured population model. It allows the observed number of individuals harvested to be compared with the expected number and provides accurate estimates of demographic parameters.We illustrate the usefulness of this IPM using an emblematic game species distributed worldwide, the wild boar Sus scrofa, as a case study. For this species that has increased in distribution and abundance over the last decades, the model provides accurate and precise annual estimates of key demographic parameters (survival, reproduction, growth) and of population size while accounting for imperfect detection and observation error.To avoid an overexploitation of declining populations or an under-exploitation of increasing populations, it is crucial to gain a good understanding of the dynamics of exploited populations. When managers or conservationists have limited demographic data, the IPM offers a powerful framework to assess population dynamics. Being highly flexible, the approach is broadly applicable to both terrestrial and marine exploited populations for which measures of body mass are commonly recorded and more generally, to all populations suffering from anthropogenic mortality causes.
Publisher
Cold Spring Harbor Laboratory
Reference58 articles.
1. Integrated population models facilitate ecological understanding and improved management decisions;The Journal of Wildlife Management,2018
2. Efficiency gain from auxiliary data requiring additional nuisance parameters;Biometrics,2001
3. Tagging piglets at the farrowing nest in the wild: some preliminary guidelines;Acta Silvatica et Lignaria Hungarica,2009
4. Integrating Mark-Recapture-Recovery and Census Data to Estimate Animal Abundance and Demographic Parameters
5. Bonenfant, C. , Gaillard, J. , Coulson, T. , Festa□Bianchet, M. , Loison, A. , Garel, M. , Loe, L.E. , Blanchard, P. , Pettorelli, N. , Owen□Smith, N. , Du Toit, J. & Duncan, P. (2009) Empirical evidence of density□dependence in populations of large herbivores. Advances in Ecological Research (ed H. Caswell ), pp. 313–357. Academic Press.
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