Arid
Diversity and composition of bird assemblages in a forest-shrub-savanna gradient of the Semiarid Chaco, Argentina
Dario Coria, Ruben1; Rene Coria, Oscar2; Roberto Kunst, Carlos1
通讯作者Dario Coria, Ruben
来源期刊ORNITOLOGIA NEOTROPICAL
ISSN1075-4377
出版年2016
卷号27页码:1-15
英文摘要

The primitive landscape predominant in the Chaco region of Argentina, Paraguay, Bolivia and Brazil, was a patchwork of forests alternating with grasslands and savannas. Regionally, over-grazing produced the replacement of herbaceous communities of grasslands and savannas for woody communities, leading to widespread shrublands. The aim of this study was to evaluate variation in diversity and composition of birds in a gradient of three types of habitats of Semi-arid Chaco: (i) Quebrachos Forest (Aspidosperma quebracho-blanco, Schinopsis lorentzii); (ii) Low shrubland, which constitutes a degraded version of the; (iii) Aibe Savanna (Elionurus muticus). The results suggest that the diversity of birds was determined by the vertical complexity of the vegetation and the degree of similarity of bird assemblages by the degree of similarity between habitat types. This led to: (i) gradual decreases in diversity of birds from the more complex (Forest) to the less complex habitat (Savanna); (ii) a unique composition of species in the Forest and the Savanna (more dissimilar habitats), where birds of closed habitats prevail in the first and open habitat species in the second and; (iii) Low shrubland, displaying greater similarity to the Forest than to the Savanna, representing a habitat unsuitable for open habitat birds. In forested areas the management should strive to maintain or improve the vegetal structure. In shrublands, grasslands and savannas prescribed fire could be used to favor open habitats birds.


英文关键词Argentina Avian diversity Environmental gradient Forest Savanna Semiarid Chaco Species composition
类型Article
语种西班牙语
国家Argentina
收录类别SCI-E
WOS记录号WOS:000385627300001
WOS关键词DRY CHACO ; LAND-COVER ; TRADE-OFFS ; BIODIVERSITY ; DISTURBANCE ; CONSERVATION ; INTENSITY ; REGION
WOS类目Ornithology
WOS研究方向Zoology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/195273
作者单位1.Estn Expt Agr Santiago del Estero, Inst Nacl Tecnol Agr, Jujuy 850, RA-4200 Santiago Del Estero, Argentina;
2.Univ Nacl Santiago del Estero UNSE, Fac Ciencias Forestales, Av Belgrano S 1912, RA-4200 Santiago Del Estero, Argentina
推荐引用方式
GB/T 7714
Dario Coria, Ruben,Rene Coria, Oscar,Roberto Kunst, Carlos. Diversity and composition of bird assemblages in a forest-shrub-savanna gradient of the Semiarid Chaco, Argentina[J],2016,27:1-15.
APA Dario Coria, Ruben,Rene Coria, Oscar,&Roberto Kunst, Carlos.(2016).Diversity and composition of bird assemblages in a forest-shrub-savanna gradient of the Semiarid Chaco, Argentina.ORNITOLOGIA NEOTROPICAL,27,1-15.
MLA Dario Coria, Ruben,et al."Diversity and composition of bird assemblages in a forest-shrub-savanna gradient of the Semiarid Chaco, Argentina".ORNITOLOGIA NEOTROPICAL 27(2016):1-15.
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