Determinants of bird species richness: Role of climate and vegetation structure at a regional scale

We examined the respective roles of climate and vegetation structure on geographical variation in bird species richness. The Province of Buenos Aires (central-eastern Argentina) was divided into 146 squares of 50 km on a side. For each square we evaluated the number of bird species, the value of thi...

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Detalles Bibliográficos
Autores principales: Cueto, V.R., De Casenave, J.L.
Formato: JOUR
Materias:
Argentina
Bird species richness
Buenos Aires Province
Climatic gradients
Spatial scale
Vegetation structure
avifauna
climate effect
scale effect
species richness
vegetation structure
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_03050270_v26_n3_p487_Cueto
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_03050270_v26_n3_p487_Cueto
record_format dspace
spelling todo:paper_03050270_v26_n3_p487_Cueto2023-10-03T15:21:10Z Determinants of bird species richness: Role of climate and vegetation structure at a regional scale Cueto, V.R. De Casenave, J.L. Argentina Bird species richness Buenos Aires Province Climatic gradients Spatial scale Vegetation structure avifauna climate effect scale effect species richness vegetation structure Argentina We examined the respective roles of climate and vegetation structure on geographical variation in bird species richness. The Province of Buenos Aires (central-eastern Argentina) was divided into 146 squares of 50 km on a side. For each square we evaluated the number of bird species, the value of thirteen climatic variables, and the value of a vegetation strata index. The climatic matrix was analyzed by Principal Component Analysis (PCA), and the first factors resulting from PCA were considered as multifactorial climatic gradients. Simple and Partial Correlation Analysis among bird species richness, vegetation strata, and the first two factors derived from PCA (65% of total variation) indicated that bird richness distribution was determined by the availability of vegetation strata, associated with different vegetation types that, at the same time, were influenced by the climatic conditions summarized in the first climatic factor (a gradient of precipitation, relative humidity, annual termical amplitude, and frost occurrence). This relationships reflect the complexity of factors that can act directly as well as indirectly on the geographical patterns in species richness. Also, we evaluated the importance of study scale comparing our results with previous studies at macrogeographic and local scales, found out that the vegetation structure was the principal determinant of bird species richness at this three geographical scales. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_03050270_v26_n3_p487_Cueto
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Argentina
Bird species richness
Buenos Aires Province
Climatic gradients
Spatial scale
Vegetation structure
avifauna
climate effect
scale effect
species richness
vegetation structure
Argentina
spellingShingle Argentina
Bird species richness
Buenos Aires Province
Climatic gradients
Spatial scale
Vegetation structure
avifauna
climate effect
scale effect
species richness
vegetation structure
Argentina
Cueto, V.R.
De Casenave, J.L.
Determinants of bird species richness: Role of climate and vegetation structure at a regional scale
topic_facet Argentina
Bird species richness
Buenos Aires Province
Climatic gradients
Spatial scale
Vegetation structure
avifauna
climate effect
scale effect
species richness
vegetation structure
Argentina
description We examined the respective roles of climate and vegetation structure on geographical variation in bird species richness. The Province of Buenos Aires (central-eastern Argentina) was divided into 146 squares of 50 km on a side. For each square we evaluated the number of bird species, the value of thirteen climatic variables, and the value of a vegetation strata index. The climatic matrix was analyzed by Principal Component Analysis (PCA), and the first factors resulting from PCA were considered as multifactorial climatic gradients. Simple and Partial Correlation Analysis among bird species richness, vegetation strata, and the first two factors derived from PCA (65% of total variation) indicated that bird richness distribution was determined by the availability of vegetation strata, associated with different vegetation types that, at the same time, were influenced by the climatic conditions summarized in the first climatic factor (a gradient of precipitation, relative humidity, annual termical amplitude, and frost occurrence). This relationships reflect the complexity of factors that can act directly as well as indirectly on the geographical patterns in species richness. Also, we evaluated the importance of study scale comparing our results with previous studies at macrogeographic and local scales, found out that the vegetation structure was the principal determinant of bird species richness at this three geographical scales.
format JOUR
author Cueto, V.R.
De Casenave, J.L.
author_facet Cueto, V.R.
De Casenave, J.L.
author_sort Cueto, V.R.
title Determinants of bird species richness: Role of climate and vegetation structure at a regional scale
title_short Determinants of bird species richness: Role of climate and vegetation structure at a regional scale
title_full Determinants of bird species richness: Role of climate and vegetation structure at a regional scale
title_fullStr Determinants of bird species richness: Role of climate and vegetation structure at a regional scale
title_full_unstemmed Determinants of bird species richness: Role of climate and vegetation structure at a regional scale
title_sort determinants of bird species richness: role of climate and vegetation structure at a regional scale
url http://hdl.handle.net/20.500.12110/paper_03050270_v26_n3_p487_Cueto
work_keys_str_mv AT cuetovr determinantsofbirdspeciesrichnessroleofclimateandvegetationstructureataregionalscale
AT decasenavejl determinantsofbirdspeciesrichnessroleofclimateandvegetationstructureataregionalscale
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