Leaf-litter decomposition in headwater stream: a comparation on the process among four climatic regions

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dc.contributor.authorPozo, Jesús
dc.contributor.authorCasas, Jesús
dc.contributor.authorMenéndez, Margarita
dc.contributor.authorMollá, Salvador
dc.contributor.authorArostegui, Inmaculada
dc.contributor.authorBasaguren, Ana
dc.contributor.authorCasado, Carmen
dc.contributor.authorDescals, Enrique
dc.contributor.authorGarcía Avilés, Javier
dc.contributor.authorGonzález, José M.
dc.contributor.authorLarrañaga, Aitor
dc.contributor.authorLópez, Enrique
dc.contributor.authorLusi, Miriam
dc.contributor.authorMoya, Óscar
dc.contributor.authorPérez, Javier
dc.contributor.authorRiera, Tecla
dc.contributor.authorRoblas, Neftalí
dc.contributor.authorSalinas, María Jacoba
dc.date.accessioned2023-06-20T00:42:49Z
dc.date.available2023-06-20T00:42:49Z
dc.date.issued2011
dc.description.abstractThe main purpose of our work was to elucidate factors responsible for the geographical differences in leaf-litter decomposition rates in Spanish oligotrophic headwater streams. Decomposition experiments with alder (Alnus glutinosa) leaf litter were carried out in 22 headwater streams in 4 different climatic regions across the Iberian Peninsula (Cornisa Canta´brica, Cordillera Litoral Catalana, Sierra de Guadarrama, and Sierra Nevada). Streams that were similar in size, flowed mainly over siliceous substrate in catchments with scarce human settlements and activities, and fell within a range of low nutrient concentrations were chosen in each region. Breakdown rates were regionally variable and were low (0.109–0.198% ash-free dry mass [AFDM]/degree day [dd]) in the Cornisa Canta´brica, the most mesic and Atlantic region, and high (0.302–0.639% AFDM/dd) in Sierra de Guadarrama, one of the coldest and most inland areas. Temperature was not the determining factor affecting differences in breakdown rates among regions, and breakdown rates were not related to concentrations of dissolved nutrients. However, microbial reproductive activity (sporulation rates) was significantly correlated with dissolved P concentration. Breakdown rates were explained better by presence and feeding activities of detritivores than by decomposer activity. Incorporation of breakdown rates in assessment schemes of stream ecological status will be difficult because leaf processing does not respond unequivocally to environmental factors when climatic regions are considered. Thus, regional adjustments of baseline standards in reference conditions will be required.
dc.description.departmentDepto. de Biodiversidad, Ecología y Evolución
dc.description.facultyFac. de Ciencias Biológicas
dc.description.refereedTRUE
dc.description.sponsorshipMinisterio de Educación y Ciencia (MEC)
dc.description.sponsorshipUniversidad del País Vasco (UPV)
dc.description.sponsorshipGobierno Vasco
dc.description.statuspub
dc.eprint.idhttps://eprints.ucm.es/id/eprint/56469
dc.identifier.doi10.1899/10-153.1
dc.identifier.issn1937-237X
dc.identifier.officialurlhttps://www.jstor.org/stable/10.1899/10-153.1?seq=1#page_scan_tab_contents
dc.identifier.urihttps://hdl.handle.net/20.500.14352/42908
dc.issue.number4
dc.journal.titleJournal of the North American Benthological Society
dc.language.isoeng
dc.page.final950
dc.page.initial935
dc.publisherThe University of Chicago Press
dc.relation.projectID(CGL2007-66664-C04)
dc.relation.projectID(GIU05/38)
dc.relation.projectID((IT-422-07), (IT-302-10))
dc.rightsAtribución-NoComercial 3.0 España
dc.rights.accessRightsopen access
dc.rights.urihttps://creativecommons.org/licenses/by-nc/3.0/es/
dc.subject.cdu574
dc.subject.keywordLeaf litter
dc.subject.keyworddecomposition
dc.subject.keywordheadwater streams
dc.subject.keywordinvertebrates
dc.subject.keywordfungi
dc.subject.keywordeutrophication
dc.subject.keywordSpain
dc.subject.ucmEcología (Biología)
dc.subject.unesco2401.06 Ecología animal
dc.titleLeaf-litter decomposition in headwater stream: a comparation on the process among four climatic regions
dc.typejournal article
dc.volume.number30
dspace.entity.typePublication
relation.isAuthorOfPublicationadd3f38d-f3d1-4274-a6e6-a877b3d2d516
relation.isAuthorOfPublication.latestForDiscoveryadd3f38d-f3d1-4274-a6e6-a877b3d2d516
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