Granivory in the Monte desert, Argentina: Is it less intense than in other arid zones of the world?

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In 1978, Mares and Rosenzweig assessed seed removal rates by granivores at a site in the northern Monte desert of Argentina, and concluded that granivory in South America is 'much depressed'. In this study, spatial and temporal patterns of seed removal by small mammals, ants, and birds in...

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Detalles Bibliográficos
Autores principales: Lopez De Casenave, J., Cueto, V.R., Marone, L.
Formato: JOUR
Materias:
Ants
Birds
Desert ecology
Granivory
Seed removal
Small mammals
South America
desert
granivory
seed
Argentina
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_09607447_v7_n3_p197_LopezDeCasenave
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_09607447_v7_n3_p197_LopezDeCasenave
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spelling todo:paper_09607447_v7_n3_p197_LopezDeCasenave2023-10-03T15:53:51Z Granivory in the Monte desert, Argentina: Is it less intense than in other arid zones of the world? Lopez De Casenave, J. Cueto, V.R. Marone, L. Ants Birds Desert ecology Granivory Seed removal Small mammals South America desert granivory seed Argentina In 1978, Mares and Rosenzweig assessed seed removal rates by granivores at a site in the northern Monte desert of Argentina, and concluded that granivory in South America is 'much depressed'. In this study, spatial and temporal patterns of seed removal by small mammals, ants, and birds in the central Monte desert were analysed, and results compared with data available from other arid zones of the world. Ants were found to be the most important granivores in spring-summer, while birds were more important in autumn-winter. No differences were found in seed removal rates between microhabitats in winter, but in the summer both ants and birds removed more seeds from under the canopy of shrubs and trees than from exposed microhabitats. The impact of ants appeared to be lower in South America than in other continents, but removal by birds at the study site was only exceeded in North America, and removal by mammals only in North America and South Africa. Results indicate that granivory in South America is not abnormally depressed. Instead, current data suggest that seed removal in North America is exceptionally high, and that low levels are actually the norm for most arid zones. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_09607447_v7_n3_p197_LopezDeCasenave
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Ants
Birds
Desert ecology
Granivory
Seed removal
Small mammals
South America
desert
granivory
seed
Argentina
spellingShingle Ants
Birds
Desert ecology
Granivory
Seed removal
Small mammals
South America
desert
granivory
seed
Argentina
Lopez De Casenave, J.
Cueto, V.R.
Marone, L.
Granivory in the Monte desert, Argentina: Is it less intense than in other arid zones of the world?
topic_facet Ants
Birds
Desert ecology
Granivory
Seed removal
Small mammals
South America
desert
granivory
seed
Argentina
description In 1978, Mares and Rosenzweig assessed seed removal rates by granivores at a site in the northern Monte desert of Argentina, and concluded that granivory in South America is 'much depressed'. In this study, spatial and temporal patterns of seed removal by small mammals, ants, and birds in the central Monte desert were analysed, and results compared with data available from other arid zones of the world. Ants were found to be the most important granivores in spring-summer, while birds were more important in autumn-winter. No differences were found in seed removal rates between microhabitats in winter, but in the summer both ants and birds removed more seeds from under the canopy of shrubs and trees than from exposed microhabitats. The impact of ants appeared to be lower in South America than in other continents, but removal by birds at the study site was only exceeded in North America, and removal by mammals only in North America and South Africa. Results indicate that granivory in South America is not abnormally depressed. Instead, current data suggest that seed removal in North America is exceptionally high, and that low levels are actually the norm for most arid zones.
format JOUR
author Lopez De Casenave, J.
Cueto, V.R.
Marone, L.
author_facet Lopez De Casenave, J.
Cueto, V.R.
Marone, L.
author_sort Lopez De Casenave, J.
title Granivory in the Monte desert, Argentina: Is it less intense than in other arid zones of the world?
title_short Granivory in the Monte desert, Argentina: Is it less intense than in other arid zones of the world?
title_full Granivory in the Monte desert, Argentina: Is it less intense than in other arid zones of the world?
title_fullStr Granivory in the Monte desert, Argentina: Is it less intense than in other arid zones of the world?
title_full_unstemmed Granivory in the Monte desert, Argentina: Is it less intense than in other arid zones of the world?
title_sort granivory in the monte desert, argentina: is it less intense than in other arid zones of the world?
url http://hdl.handle.net/20.500.12110/paper_09607447_v7_n3_p197_LopezDeCasenave
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AT cuetovr granivoryinthemontedesertargentinaisitlessintensethaninotheraridzonesoftheworld
AT maronel granivoryinthemontedesertargentinaisitlessintensethaninotheraridzonesoftheworld
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