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Communication Dans Un Congrès Année : 2016

Integrating lethal collision risk from watercraft into optimal designs zones for marine mammals

Brad J. Udell
  • Fonction : Orateur
  • PersonId : 1018911
Julien Martin
  • Fonction : Collaborateur
  • PersonId : 1018912
Robert Fletcher
  • Fonction : Collaborateur
  • PersonId : 1018913
Mathieu Bonneau
Edwards Holly
  • Fonction : Collaborateur
  • PersonId : 1018914
Tim Gowan
  • Fonction : Collaborateur
  • PersonId : 1018915
Scott Calleson
  • Fonction : Collaborateur
  • PersonId : 1018916
Eliezer Gurarie
  • Fonction : Collaborateur
  • PersonId : 1018917
Charles J. Deutsch
  • Fonction : Collaborateur
  • PersonId : 1018918
Stacie Koslovsky
  • Fonction : Collaborateur
  • PersonId : 1018919

Résumé

Encounter risk is critical to many aspects of ecology and conservation, spanning topics such as predator-prey interactions, mate finding, dispersal, and disease dynamics. However, encounter risk is rarely explicitly linked with conservation management actions. For some marine mammals, collisions with watercraft cause a significant portion of overall mortality, and conservation efforts would benefit greatly from the ability to quantify the effects of management on lethal encounter risk. The establishment of protection zones is viewed as a primary management objective to reduce mortality risk, yet implementation of these zones can be contentious. This work applies recent advances in encounter rate theory, nested in a Bayesian Belief Network, to quantify the relative risk of lethal collisions between Florida manatees (Trichechus manatus latirostris) and watercraft in a real landscape. Abundance of manatees and boats are two critical state variables that must first be estimated and modeled in space and time to apply this framework in a landscape. We do this by combining multiple sources of information (including counts from aerial surveys) with advances in Bayesian statistical estimation. We also apply decision theory, using two different optimization approaches (simulated annealing and linear integer programming (LIP), to determine optimal configuration of protection zones under various costs and constraints scenarios.
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Dates et versions

hal-01603390 , version 1 (02-10-2017)

Identifiants

  • HAL Id : hal-01603390 , version 1
  • PRODINRA : 405555

Citer

Brad J. Udell, Julien Martin, Robert Fletcher, Mathieu Bonneau, Edwards Holly, et al.. Integrating lethal collision risk from watercraft into optimal designs zones for marine mammals. 101 st ESA Annual Meeting Ecological Society of America, Aug 2016, Fort Lauderdale (Floride), United States. ⟨hal-01603390⟩
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