Browsing by Subject "Segura river"

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    La ictiofauna continental de la cuenca del rio Segura. evolución histórica y estado actual
    (Murcia: Universidad de Murcia, Servicio de Publicaciones, 1986) Más Hernández, J.; Facultad de Biología
    A study has been camed out on the distribution, during different periods of time, of the species of the ichthyofauna of the Segura basin. This contribution consists of a superficial preliminary section related to historical antecedents, to give a general perspective from the 16th to 19th centuries. It is followed by a biogeographical description of the position of the watershed in relation to the lberian Peninsula, and a summary of bibliographical information from 1930 to 1952. Finally, there is a description of the present situation. Some faunal characteristics have been analysed, detailing the date and magnitude of the repopulations and introductions into the ecosystem. This has been complemented with some considerations on the recent evolution of the fish population and on the possibilities of recuperation in the immediate future.
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    Spatial effects in the socioeconomic valuation of peri-urban ecosystems restoration
    (Elsevier, 2021-03-30) Martínez Paz, José Miguel; Albaladejo García, José Antonio; Barreiro-Hurle, Jesús; Martínez-Carrasco Pleite, Federico; Perni, Ángel; Economía Aplicada
    In many cities, urban pressure is deteriorating peri-urban ecosystems, despite their high capacity to provide ecosystem services. Against this pressure, restoration projects are being developed to improve the environmental conditions of peri-urban ecosystems. The aim of this work is to determine the economic value and degree of acceptability of a restoration project, the Murcia-Río project, analysing spatial effects. This dimension is incorporated when estimating the willingness to pay (WTP) for the project and when dealing with protest behaviour (PB). A survey was carried out to 401 households in Murcia city (SE-Spain) using the contingent valuation method to obtain a monetary value for the project. We identify that distance to both the project area and substitute areas explain WTP and PB. Based on these findings, we recommend that, to maximize the benefits of such actions, interventions should be targeted to areas with high accessibility and low number of substitutes.