Spatial pattern of pindó palm (Syagrus romanzoffiana) recruitment in Argentinian atlantic forest: The importance of tapir and effects of defaunation

Hunting pressure, fragmentation and deforestation have caused global declines in animal abundance, and the consequences for plant communities are poorly understood. Many large-seeded plants, for instance, depend on large and endangered vertebrates for seed dispersal. In some Semi-deciduous Atlantic...

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Detalles Bibliográficos
Autores principales: Sica, Y.V., Bravo, S.P., Giombini, M.I.
Formato: JOUR
Materias:
Tapirus terrestris
Iguazú National Park
Seed dispersal
Spatial analysis
Syagrus romanzoffiana
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00063606_v46_n6_p696_Sica
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_00063606_v46_n6_p696_Sica
record_format dspace
spelling todo:paper_00063606_v46_n6_p696_Sica2023-10-03T14:05:13Z Spatial pattern of pindó palm (Syagrus romanzoffiana) recruitment in Argentinian atlantic forest: The importance of tapir and effects of defaunation Sica, Y.V. Bravo, S.P. Giombini, M.I. Tapirus terrestris Iguazú National Park Seed dispersal Spatial analysis Syagrus romanzoffiana Tapirus terrestris Hunting pressure, fragmentation and deforestation have caused global declines in animal abundance, and the consequences for plant communities are poorly understood. Many large-seeded plants, for instance, depend on large and endangered vertebrates for seed dispersal. In some Semi-deciduous Atlantic Forests, endangered tapirs (Tapirus terrestris) are major dispersers of pindó palms (Syagrus romanzoffiana). Here, we compare recruitment patterns of pindó palms between protected and disturbed (defaunated) Atlantic Forest areas in Argentina and evaluate the potential consequences of the lack of the main disperser for pindó palm regeneration. We analyzed the number and spatial pattern of pindó adults, offspring, and tapir dung piles within ten plots established in an area spanning tapir latrines inside Iguazú National Park and in a fragmented forest area outside the park where tapir is locally extinct. In both areas, we evaluated recruitment levels beneath 24 adult palms in circular plots centered on adult stems. We found lower pindó palm recruitment outside the park where offspring tended to be aggregated around adult palms. In contrast, in Iguazú National Park offspring were spatially associated with tapir dung-piles, in which most offspring were registered. Recruitment under adults was higher outside the park suggesting a lower rate of seed removal in disturbed areas. Our results show that tapir dispersal promotes higher recruitment levels of pindó offspring and shapes their spatial pattern, breaking the spatial association with adult (presumably maternal) palms. These results are useful for predicting the impact of local tapir extinction on this palm. © 2014 The Association for Tropical Biology and Conservation. Fil:Sica, Y.V. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Bravo, S.P. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Giombini, M.I. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00063606_v46_n6_p696_Sica
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Tapirus terrestris
Iguazú National Park
Seed dispersal
Spatial analysis
Syagrus romanzoffiana
Tapirus terrestris
spellingShingle Tapirus terrestris
Iguazú National Park
Seed dispersal
Spatial analysis
Syagrus romanzoffiana
Tapirus terrestris
Sica, Y.V.
Bravo, S.P.
Giombini, M.I.
Spatial pattern of pindó palm (Syagrus romanzoffiana) recruitment in Argentinian atlantic forest: The importance of tapir and effects of defaunation
topic_facet Tapirus terrestris
Iguazú National Park
Seed dispersal
Spatial analysis
Syagrus romanzoffiana
Tapirus terrestris
description Hunting pressure, fragmentation and deforestation have caused global declines in animal abundance, and the consequences for plant communities are poorly understood. Many large-seeded plants, for instance, depend on large and endangered vertebrates for seed dispersal. In some Semi-deciduous Atlantic Forests, endangered tapirs (Tapirus terrestris) are major dispersers of pindó palms (Syagrus romanzoffiana). Here, we compare recruitment patterns of pindó palms between protected and disturbed (defaunated) Atlantic Forest areas in Argentina and evaluate the potential consequences of the lack of the main disperser for pindó palm regeneration. We analyzed the number and spatial pattern of pindó adults, offspring, and tapir dung piles within ten plots established in an area spanning tapir latrines inside Iguazú National Park and in a fragmented forest area outside the park where tapir is locally extinct. In both areas, we evaluated recruitment levels beneath 24 adult palms in circular plots centered on adult stems. We found lower pindó palm recruitment outside the park where offspring tended to be aggregated around adult palms. In contrast, in Iguazú National Park offspring were spatially associated with tapir dung-piles, in which most offspring were registered. Recruitment under adults was higher outside the park suggesting a lower rate of seed removal in disturbed areas. Our results show that tapir dispersal promotes higher recruitment levels of pindó offspring and shapes their spatial pattern, breaking the spatial association with adult (presumably maternal) palms. These results are useful for predicting the impact of local tapir extinction on this palm. © 2014 The Association for Tropical Biology and Conservation.
format JOUR
author Sica, Y.V.
Bravo, S.P.
Giombini, M.I.
author_facet Sica, Y.V.
Bravo, S.P.
Giombini, M.I.
author_sort Sica, Y.V.
title Spatial pattern of pindó palm (Syagrus romanzoffiana) recruitment in Argentinian atlantic forest: The importance of tapir and effects of defaunation
title_short Spatial pattern of pindó palm (Syagrus romanzoffiana) recruitment in Argentinian atlantic forest: The importance of tapir and effects of defaunation
title_full Spatial pattern of pindó palm (Syagrus romanzoffiana) recruitment in Argentinian atlantic forest: The importance of tapir and effects of defaunation
title_fullStr Spatial pattern of pindó palm (Syagrus romanzoffiana) recruitment in Argentinian atlantic forest: The importance of tapir and effects of defaunation
title_full_unstemmed Spatial pattern of pindó palm (Syagrus romanzoffiana) recruitment in Argentinian atlantic forest: The importance of tapir and effects of defaunation
title_sort spatial pattern of pindó palm (syagrus romanzoffiana) recruitment in argentinian atlantic forest: the importance of tapir and effects of defaunation
url http://hdl.handle.net/20.500.12110/paper_00063606_v46_n6_p696_Sica
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AT bravosp spatialpatternofpindopalmsyagrusromanzoffianarecruitmentinargentinianatlanticforesttheimportanceoftapirandeffectsofdefaunation
AT giombinimi spatialpatternofpindopalmsyagrusromanzoffianarecruitmentinargentinianatlanticforesttheimportanceoftapirandeffectsofdefaunation
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