Modelling the impact of habitat fragmentation on brown trout population dynamics

Alonso González, Carlos and Gortázar Rubial, Javier and Marchamalo Sacristán, Miguel and García de Jalón Lastra, Diego (2010). Modelling the impact of habitat fragmentation on brown trout population dynamics. In: "9th International Conference on the Biology of Fish, 2010", 05/07/2010 - 09/07/2010, Barcelona, España.

Description

Title: Modelling the impact of habitat fragmentation on brown trout population dynamics
Author/s:
  • Alonso González, Carlos
  • Gortázar Rubial, Javier
  • Marchamalo Sacristán, Miguel
  • García de Jalón Lastra, Diego
Item Type: Presentation at Congress or Conference (Article)
Event Title: 9th International Conference on the Biology of Fish, 2010
Event Dates: 05/07/2010 - 09/07/2010
Event Location: Barcelona, España
Title of Book: Book of abstracts of 9th International Conference on the Biology of Fish, 2010
Date: 2010
Subjects:
Faculty: E.T.S.I. Caminos, Canales y Puertos (UPM)
Department: Ingeniería y Morfología del Terreno
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

Habitat fragmentation caused by the presence of insurmountable obstacles in a fish population has implications in its temporal dynamics, mainly affecting the population viability thresholds. Thus, an artificially fragmented population needs a greater population density to ensure its long-term viability. Based on a theta-logistic population dynamics model to which a population viability threshold effect has been added, the concept of resilience is defined by two factors: resistance and recovery ability. Resistance depends on the difference between population viability threshold and carrying capacity. This work analyses the sensitivity of and the consequences on the parameter resilience to different locations and conditions of an insurmountable obstacle fragmenting a native population of brown trout.

More information

Item ID: 7596
DC Identifier: http://oa.upm.es/7596/
OAI Identifier: oai:oa.upm.es:7596
Official URL: http://www.fishbiologycongress.org/
Deposited by: Memoria Investigacion
Deposited on: 05 Jul 2011 10:45
Last Modified: 20 Apr 2016 16:41
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