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Abstract:

Seed dispersal by mammals results spatially heterogeneous since some areas of mammals' territories that are avoided by them. Therefore, seed arrival is high in areas frequently used by the animals and negligible in the avoided areas. Besides, seeds in mammals' scats can suffer high levels of removal and predation by rodents. Disturbed areas of semi-deciduous Atlantic forest (Province of Misiones) are invaded by the native bamboo Chusquea ramosissirna (tacuarembó), which precludes forest regeneration. Several areas invaded by tacuarembó flowered during 2001-2003 and, as individuals died after flowering events, piperaceas and ferns replaced them. Our objective was to determine whether the presence of tacuarembó disrupts the seed dispersal process during dispersal and post-dispersal phases, and if tacuarembó flowering reverts this situation in the Iguazú National Park. We evaluated removal and predation of seeds by rodents with and without scats, and in environments with and without tacuarembó. We also evaluated the abundance of big and medium mammals' signals (tracks, scats, caves) in both environments. Tacuarembó did not affect rodents' activity, and they might use mammals' scats as a signal to find seeds. Big mammals did not use areas invaded by tacuarembó, thus big seeds arrival of species dispersed by them would be restricted to areas free of invasion. Flowering of tacuarembó might revert this situation.

Registro:

Documento: Artículo
Título:Effects of tacuarembó (chusquea ramosissirna, poaceae) on seed dispersal process in misiones forest
Autor:Gallardo, A.; Month, L.; Bravo, S.P.
Filiación:Laboratorio de Ecología Funcional, Departamento de Ecología, Genetica y Evolutión, Universidad de Buenos Aires, Argentina
Lab. de Ecología Funcional, Depto. de Ecología, Genética y Evolución, Universidad de Buenos Aires, Ciudad Universitaria Pab. II, 4 piso, (1428) Ciudad Autónoma de Buenos Aires, Argentina
Palabras clave:Bamboo flowering; Habitat use; Seed predation; Seed removal; bamboo; biological invasion; flowering; habitat use; heterogeneity; invasive species; mammal; rodent; seed dispersal; seed predation; Argentina; Atlantic Forest; Iguazu National Park; Misiones [Argentina]; South America; Animalia; Chusquea; Filicophyta; Mammalia; Poaceae; Rodentia
Año:2008
Volumen:18
Número:3
Página de inicio:347
Página de fin:356
Título revista:Ecologia Austral
Título revista abreviado:Ecol. Austral
ISSN:03275477
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03275477_v18_n3_p347_Gallardo

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Citas:

---------- APA ----------
Gallardo, A., Month, L. & Bravo, S.P. (2008) . Effects of tacuarembó (chusquea ramosissirna, poaceae) on seed dispersal process in misiones forest . Ecologia Austral, 18(3), 347-356.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03275477_v18_n3_p347_Gallardo [ ]
---------- CHICAGO ----------
Gallardo, A., Month, L., Bravo, S.P. "Effects of tacuarembó (chusquea ramosissirna, poaceae) on seed dispersal process in misiones forest " . Ecologia Austral 18, no. 3 (2008) : 347-356.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03275477_v18_n3_p347_Gallardo [ ]
---------- MLA ----------
Gallardo, A., Month, L., Bravo, S.P. "Effects of tacuarembó (chusquea ramosissirna, poaceae) on seed dispersal process in misiones forest " . Ecologia Austral, vol. 18, no. 3, 2008, pp. 347-356.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03275477_v18_n3_p347_Gallardo [ ]
---------- VANCOUVER ----------
Gallardo, A., Month, L., Bravo, S.P. Effects of tacuarembó (chusquea ramosissirna, poaceae) on seed dispersal process in misiones forest . Ecol. Austral. 2008;18(3):347-356.
Available from: https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03275477_v18_n3_p347_Gallardo [ ]