Observatorio de I+D+i UPM

Memorias de investigación
Communications at congresses:
Species' use of the landscape inferred from environmental variables at multiple scales: How much we gain from high-resolution data?
Year:2015
Research Areas
  • Ecology
Information
Abstract
Spatial resolution of environmental data may influence the results of habitat selection models. As high-resolution data are usually expensive, an assessment of their contribution to the reliability of habitat selection models should be of interest for both researchers and managers. We tackle this question by making use of a large dataset of about 8,000 brown bear presence records in the Cantabrian Range (NW Spain) where the last native bear populations in the Iberian Peninsula remain. We evaluate how different data on forest cover influence the inferences and predictive power of multi-scale habitat selection models for brown bears. We quantify the relative performance of three types of data on forest cover: (i) coarse resolution data from Corine Land Cover (minimum mapping unit of 25 ha), (ii) medium resolution data from the Spanish Forest Map (minimum mapping unit of 2.5 ha and more detailed information on forest composition and structure), and (iii) high-resolution Lidar data (about 0.5 points/m2 ), providing much finer information on forest canopy cover and height. We discuss the reasons that may affect the added value of highresolution data for explaining habitat selection by forest species, particularly those with broad spatial requirements like brown bears.
International
Si
Congress
IUFRO Landscape Ecology Working Group Conference, 2015
960
Place
Tartu, Estonia
Reviewers
Si
ISBN/ISSN
978-9949-9715-0-3
Start Date
23/08/2015
End Date
30/08/2015
From page
65
To page
65
Sustaining ecosystem services in forest landscapes
Participants
  • Autor: Aitor Gaston Gonzalez (UPM)
  • Autor: Maria Cruz Mateo Sanchez (UPM)
  • Autor: Carlos Ciudad Trilla (UPM)
  • Autor: Juan Ignacio Garcia Viñas (UPM)
  • Autor: Cesar Lopez Leiva (UPM)
  • Autor: Jorge Cuevas (UPM)
  • Autor: Alfredo Fernandez Landa (UPM)
  • Autor: Miguel Marchamalo Sacristan (UPM)
  • Autor: Marie-Josée Fortin (Univ Toronto)
  • Autor: Santiago Fulgencio Saura Martinez de Toda (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Hidrobiología
  • Grupo de Investigación: Ecología y Gestión Forestal Sostenible
  • Departamento: Ingeniería y Morfología del Terreno
  • Departamento: Sistemas y Recursos Naturales
  • Departamento: Ingeniería y Gestión Forestal y Ambiental
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