Effects of tacuarembó (chusquea ramosissirna, poaceae) on seed dispersal process in misiones forest

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...

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Autor principal: Gallardo, A.
Otros Autores: Month, L., Bravo, Susana Patricia
Formato: Capítulo de libro
Lenguaje:Español
Publicado: 2008
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100 1 |a Gallardo, A. 
245 1 0 |a Effects of tacuarembó (chusquea ramosissirna, poaceae) on seed dispersal process in misiones forest 
246 3 1 |a efectos del tacuarembó (chusquea ramosissima, poaceae) sobre el proceso de dispersión de semillas en la selva misionera 
260 |c 2008 
270 1 0 |m Bravo, S. P.; 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; email: sbravo@ege.fcen.uba.ar 
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506 |2 openaire  |e Política editorial 
520 3 |a 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.  |l eng 
593 |a Laboratorio de Ecología Funcional, Departamento de Ecología, Genetica y Evolutión, Universidad de Buenos Aires, Argentina 
593 |a 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 
651 4 |a ARGENTINA 
651 4 |a MISIONES [ARGENTINA] 
651 4 |a SOUTH AMERICA 
690 1 0 |a BAMBOO FLOWERING 
690 1 0 |a HABITAT USE 
690 1 0 |a SEED PREDATION 
690 1 0 |a SEED REMOVAL 
690 1 0 |a BAMBOO 
690 1 0 |a BIOLOGICAL INVASION 
690 1 0 |a FLOWERING 
690 1 0 |a HABITAT USE 
690 1 0 |a HETEROGENEITY 
690 1 0 |a INVASIVE SPECIES 
690 1 0 |a MAMMAL 
690 1 0 |a RODENT 
690 1 0 |a SEED DISPERSAL 
690 1 0 |a SEED PREDATION 
690 1 0 |a ATLANTIC FOREST 
690 1 0 |a IGUAZU NATIONAL PARK 
690 1 0 |a ANIMALIA 
690 1 0 |a CHUSQUEA 
690 1 0 |a FILICOPHYTA 
690 1 0 |a MAMMALIA 
690 1 0 |a POACEAE 
690 1 0 |a RODENTIA 
700 1 |a Month, L. 
700 1 |a Bravo, Susana Patricia 
773 0 |d 2008  |g v. 18  |h pp. 347-356  |k n. 3  |p Ecol. Austral  |x 03275477  |w (AR-BaUEN)CENRE-1929  |t Ecologia Austral 
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