Browsing by Subject "Temporary"

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    Open Access
    A conceptual framework for understanding the biogeochemistry of dry riverbeds through the lens of soil science
    (Elsevier, 2019) Arce, María Isabel; Mendoza Lera, Clara; Almagro, María; Catalán, Nuria; Romaní, Anna M.; Martí, Eugenia; Gómez Cerezo, Rosa María; Bernal, Susana; Foulquier, Arnaud; Mutz, Michael; Marcé, Rafael; Zoppini, AnnaMaria; Gionchetta, Giulia; Weigelhofer, Gabriele; Campo, Rubén del; Robinson, Christopher T.; Gilmer, Alan; Rulik, Martin; Obrador, Biel; Shumilova, Oleksandra; Zlatanović, Sanja; Arnon, Shai; Baldrian, Petr; Singer, Gabriel; Datry, Thibault; Skoulikidis, Nikos; Tietjen, Britta; Schiller, Daniel von; Ecología e Hidrología
    Intermittent rivers and ephemeral streams (IRES) encompass fluvial ecosystems that eventually stop flowing andrun dry at some point in space and time. During the dry phase, channels of IRES consist mainly of dry riverbeds(DRBs), prevalent yet widely unexplored ecotones between dry and wet phases that can strongly influence thebiogeochemistry of fluvial networks. DRBs are often overlooked because they do not strictly belong to eitherdomain of soil or freshwater science. Due to this dual character of DRBs, we suggest that concepts and knowledgefrom soil science can be used to expand the understanding of IRES biogeochemistry. Based on this idea, wepropose that DRBs can be conceptually understood as early stage soils exhibiting many similarities with soilsthrough two main forces: i) time since last sediment transport event, and ii) the development status of stabilizingstructures (e.g. soil crusts and/or vascular plants). Our analysis suggests that while DRBs and soils may differ inmaster physical attributes (e.g. soil horizons vs fluvial sedimentary facies), they become rapidly comparable interms of microbial communities and biogeochemical processes. We further propose that drivers of DRBs biogeochemistry are similar to those of soils and, hence, concepts and methods used in soil science are transferableto DRBs research. Finally, our paper presents future research directions to advance the knowledge of DRBs and tounderstand their role in the biogeochemistry of intermittent fluvial networks.
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    Open Access
    Ecosistemas de rios temporales: ecología de las poblaciones de efemerópteros de la cuenca del rio Bembézar (Sierra Morena)
    (Murcia: Universidad de Murcia, Servicio de Publicaciones, 1986) Puig, M. A.; Ferreras Romero, M.; Rojas, M. R.; Facultad de Biología
    Three types of streams are noted for the temporary basin of the Bembézar river: the temporary streams, the permanent streams and the temporary streams with stable pools in summer. )4 species of Ephemeroptera have been caugth along two years (1982 and 1983). The distribution of these species has been different from year to year. An individual pattern of the community evolution for each sampling site has been observed.