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dc.contributor.author
Brand, Cecilia  
dc.contributor.author
Grech, Marta Gladys  
dc.date.available
2020-05-26T20:13:42Z  
dc.date.issued
2020-02  
dc.identifier.citation
Brand, Cecilia; Grech, Marta Gladys; Recent invasion of Didymosphenia geminata (Lyngbye) M. Schmidt in a Patagonian regulated river promotes changes in composition and density of macroinvertebrate community; Springer; Biological Invasions; 22; 2-2020; 1903-1915  
dc.identifier.issn
1387-3547  
dc.identifier.uri
http://hdl.handle.net/11336/105939  
dc.description.abstract
Didymosphenia geminata is a stalked freshwater diatom, which forms large blooms in ultra-oligotrophic conditions, and it has been declared a nuisance species inmany lotic systems worldwide. Its presence is verified in Argentine Patagonia since 2010. To understand the differences in the community of macroinvertebrates between non-invaded sites and D. geminata blooms, three non-invaded sites and three sites with 80?90% blooms coverage were sampled seasonally at Futaleufu´ River. Physical and chemical variables (pH, suspended solids, total dissolved solids, conductivity, dissolved oxygen, and nutrients) showed no significant differences between sites. Sites with D. geminata blooms were associated with significantly higher values of periphyton biomass and chlorophyll a. Macroinvertebrate community differed between D. geminata infected sites and sites with native periphyton. Higher total macroinvertebrate density, higher tolerant groups (Orthocladiinae and non-insect taxa) density, and total richness were found in the presence of blooms. Trophic structure changed at D. geminata blooms, where shredders and collectorgatherers increased in abundance. The diatom blooms may constitute a new complex micro-habitat that provides refuge from harsh current and predators, as well as new foraging opportunities, producing a bottom-up effect on the benthic community.  
dc.format
application/pdf  
dc.language.iso
eng  
dc.publisher
Springer  
dc.rights
info:eu-repo/semantics/restrictedAccess  
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/  
dc.subject
DIATOMS  
dc.subject
EXOTIC SPECIES  
dc.subject
BENTIC MACROINVERTEBRATES  
dc.subject
REGULATED RIVERS  
dc.subject
PATAGONIA  
dc.subject.classification
Ecología  
dc.subject.classification
Ciencias Biológicas  
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS  
dc.title
Recent invasion of Didymosphenia geminata (Lyngbye) M. Schmidt in a Patagonian regulated river promotes changes in composition and density of macroinvertebrate community  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2020-05-19T19:37:51Z  
dc.journal.volume
22  
dc.journal.pagination
1903-1915  
dc.journal.pais
Alemania  
dc.journal.ciudad
Berlín  
dc.description.fil
Fil: Brand, Cecilia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Centro de Investigación Esquel de Montaña y Estepa Patagóica. Universidad Nacional de la Patagonia "San Juan Bosco". Facultad de Ciencias Naturales - Sede Esquel. Centro de Investigación Esquel de Montaña y Estepa Patagónica; Argentina  
dc.description.fil
Fil: Grech, Marta Gladys. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Centro de Investigación Esquel de Montaña y Estepa Patagóica. Universidad Nacional de la Patagonia "San Juan Bosco". Facultad de Ciencias Naturales - Sede Esquel. Centro de Investigación Esquel de Montaña y Estepa Patagónica; Argentina  
dc.journal.title
Biological Invasions  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://link.springer.com/10.1007/s10530-020-02230-8  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1007/s10530-020-02230-8