Observatorio de I+D+i UPM

Memorias de investigación
Research Publications in journals:
Longitudinal connectivity loss in a riverine network: accounting for the likelihood of upstream and downstream movement across dams
Year:2017
Research Areas
  • Watercourse,
  • Environmental protection,
  • Hydrology
Information
Abstract
Disruption of longitudinal connectivity is a major concern in most of the world¿s rivers. Approaches based on graph theory have proven to be a suitable tool for analysing functional connectivity. However, previous applications of graph-based connectivity methods to river systems have been oversimplified in that they have treated potential barriers as binary features and rivers as symmetric networks. We here apply a network analytical approach in which (a) upstream and downstream connectivity are considered so that fish passability values across dams are asymmetrical, and (b) it is possible to consider a continuous range of passability values for every dam. We build on previous and widely used connectivity metrics (Probability of Connectivity, PC), which here are generalised and adapted toward that end. We compare the results of our approach with those that would be obtained under the more simplified assumptions of symmetric movement and of barriers as binary features. We want to prove if there are substantial differences between considering or not the asymmetry in river networks. The application of symmetrical and asymmetrical PC highlights major differences between the upstream connectivity versus the downstream connectivity. We provide our methods in a free software package so that they can be used in any other application to riverscapes. We expect to provide a better graph-based approach for the prioritisation of the removal or permeabilization of artificial obstacles as well as for the preservation of target river segments for connectivity conservation and restoration.
International
Si
JCR
Si
Title
Aquatic Sciences
ISBN
1015-1621
Impact factor JCR
2,398
Impact info
Datos JCR del año 2015
Volume
79
10.1007/s00027-017-0518-3
Journal number
3
From page
573
To page
585
Month
SIN MES
Ranking
Participants
  • Autor: Gonzalo Rincón Sanz (UPM)
  • Autor: Joaquin Solana Gutierrez (UPM)
  • Autor: Carlos Alonso Gonzalez (UPM)
  • Autor: Santiago Fulgencio Saura Martinez de Toda (UPM)
  • Autor: Diego M Garcia de Jalon Lastra (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Ecología y Gestión Forestal Sostenible
  • Grupo de Investigación: Hidrobiología
  • Departamento: Sistemas y Recursos Naturales
  • Departamento: Ingeniería y Gestión Forestal y Ambiental
S2i 2020 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
Cofinanciación del MINECO en el marco del Programa INNCIDE 2011 (OTR-2011-0236)
Cofinanciación del MINECO en el marco del Programa INNPACTO (IPT-020000-2010-22)