The paradox of the conservation of an endangered fish species in a Mediterranean region under agricultural intensification

Casas, J. Jesús; Sánchez-Oliver, Juan S.; Sanz, Ana; Furné, Miriam; Trenzado, Cristina; Juan, Melchor; Paracuellos, Mariano; Suárez, María D.; Fuentes, Francisca; Gallego Nogales, Irene; Gil, Carlos; Ramos-Miras, José J.

doi:10.1016/j.biocon.2010.08.023

Scientific article

English

The paradox of the conservation of an endangered fish species in a Mediterranean region under agricultural intensification

Contributors

Casas, J. Jesús; Sánchez-Oliver, Juan S.; Sanz, Ana; Furné, Miriam; Trenzado, Cristina; Juan, Melchor; Paracuellos, Mariano; Suárez, María D.; Fuentes, Francisca; Gallego Nogales, Irene; Gil, Carlos; Ramos-Miras, José J.

Published in

Biological conservation, vol. 144, no. 1, p. 253-262

Publication date

2011

Abstract

We studied the relative value of natural habitats, river and coastal wetlands, and artificial habitats, irrigation canal and ponds, for the conservation of an endangered fish, Iberian toothcarp, in its southernmost area of distribution, characterised by agricultural intensification. Our results show that the bulk of the population of the Iberian toothcarp is concentrated in irrigation ponds. Natural habitats sustained null or impoverished subpopulations, and individuals showed signs of low metabolic activity. This coincided with the relatively high habitat quality observed in ponds, particularly those with submerged aquatic vegetation, in contrast with the chronic eutrophication of the coastal lagoons. In spite of a generalised aggressive management in the irrigation system, featured by periodic vegetation clearance, desiccation and biocide treatment, the subpopulation of the Iberian toothcarp thrives in it probably thanks to adequate water quality and to an active path dynamics maintained by connectivity through the canal. Agro-environmental measures are discussed for the improvement of this species conservation in natural and artificial habitats.

Keywords

Iberian toothcarp
Agricultural impacts
Irrigation systems
Natural habitats

UNIGE affiliation entities

Not a UNIGE publication

Citation (ISO format)

CASAS, J. Jesús et al. The paradox of the conservation of an endangered fish species in a Mediterranean region under agricultural intensification. In: Biological conservation, 2011, vol. 144, n° 1, p. 253–262. doi: 10.1016/j.biocon.2010.08.023

Article (Accepted version)

Identifiers

PID : unige:89864
DOI : 10.1016/j.biocon.2010.08.023

Additional URL for this publication

http://linkinghub.elsevier.com/retrieve/pii/S0006320710003800

Journal ISSN

0006-3207

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The paradox of the conservation of an endangered fish species in a Mediterranean region under agricultural intensification

Contributors

Published in

Publication date

Abstract

Keywords

UNIGE affiliation entities

Citation (ISO format)

Main files (1)

Identifiers

Additional URL for this publication

Journal ISSN

Technical informations

Creation

First validation

Update

Status update

Last indexation