Patterns of species abundance in Pampean communities of small rodents

The composition of eight small-rodent communities in the Pampean region of central Argentina was studied in two different habitats. Akodon azarae was the most abundant species in seven communities. Species diversity and evenness were higher in field borders than in grasslands. Borders had higher pro...

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Detalles Bibliográficos
Autor principal: Bilenca, David Norberto
Otros Autores: Kravetz, F.O
Formato: Capítulo de libro
Lenguaje:Español
Publicado: 1995
Materias:
Acceso en línea:Registro en Scopus
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Registro en la Biblioteca Digital
Aporte de:Registro referencial: Solicitar el recurso aquí
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100 1 |a Bilenca, David Norberto 
245 1 0 |a Patterns of species abundance in Pampean communities of small rodents 
246 3 1 |a Patrones de abundancia relativa en ensambles de pequenos roedores de la region pampeana 
260 |c 1995 
506 |2 openaire  |e Política editorial 
520 3 |a The composition of eight small-rodent communities in the Pampean region of central Argentina was studied in two different habitats. Akodon azarae was the most abundant species in seven communities. Species diversity and evenness were higher in field borders than in grasslands. Borders had higher proportion of Mus and Calomys and lower proportion of Akodon and Oxymycterus than grasslands. The data were fitted to species-abundance patterns expected according to the "broken stick' model (BS), and to the "geometric series' model. In seven of eight cases, BS was rejected because the communities had a stronger hierarchical structure than predicted by the model. Several interpretations for this are offered. The present proportion of Calomys spp. in the agroecosystems probably exceeds its original proportion in Pampean grasslands. -from English summary  |l eng 
593 |a Fac de Ciencias Exactas y Naturales, Univ de Buenos Aires, Ciudad Universtaria, Pabellon II, 4° Piso, Buenos Aires, Argentina 
651 4 |a ARGENTINA 
690 1 0 |a ARABLE FIELD 
690 1 0 |a GRASSLAND 
690 1 0 |a RODENT COMMUNITY 
690 1 0 |a SPECIES DIVERSITY 
690 1 0 |a PAMPA 
690 1 0 |a AKODON 
690 1 0 |a AKODON AZARAE 
690 1 0 |a AKODON AZARAE 
690 1 0 |a CALOMYS 
690 1 0 |a CALOMYS 
690 1 0 |a MUS 
690 1 0 |a MUS 
690 1 0 |a OXYMYCTERUS 
690 1 0 |a OXYMYCTERUS 
690 1 0 |a RODENTIA 
700 1 |a Kravetz, F.O. 
773 0 |d 1995  |g v. 5  |h pp. 21-30  |k n. 1  |x 03275477  |w (AR-BaUEN)CENRE-1929  |t Ecologia Austral 
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