Schunck F.,University of Sao Paulo |
Piacentini V.Q.,University of Sao Paulo |
de Souza E.A.,Resex Acau Goiana |
de Sousa A.E.B.A.,CEMAVE |
And 9 more authors.
Revista Brasileira de Ornitologia | Year: 2012
The Lower Middle São Francisco (LMSF) river encompasses the region of the river basin in the State of Bahia from the border with Minas Gerais down to Remanso. We present the results of field surveys done between 2007 and 2009 in three regions within the LMSF (Correntina, Ibotirama and Boqueirão da Onça). Data were gathered with mist nets and through direct observations. In total, we recorded 315 bird species, 139 of them with at least one physical documentation. The richest families were Tyrannidae (41 species) and Furnariidae (17). We ringed about 1,350 individuals representing 112 species. Five species threatened with extinction were found during our surveys, in addition to 13 species endemic to caatinga and 4 endemic to cerrado. Our recordings of Penelope jacucaca, Anodorhynchus leari, Lepidocolaptes wagleri and Sporagra yarrellii are among the most noteworthy.
de Vasconcelos M.F.,Pontifical Catholic University of Minas Gerais |
Souza L.N.,Rua Benvinda de Carvalho |
Duca C.,University Vila Velha |
Pacheco J.F.,Rua Bambina |
And 6 more authors.
Revista Brasileira de Ornitologia | Year: 2012
Brejinho das Ametistas (14°15'46"S; 42°31'28"W) is situated in a transitional zone between the caatinga and the cerrado, in southern Bahia. Here, we present an avifaunal survey conducted between October 2007 and May 2011, totaling 467 h of sampling effort in different vegetation types of this area, which include cerrado sensu stricto, "campos rupestres", "carrascos", arboreal and shrubby caatingas, and gallery forests. We recorded 259 bird species in the region, of which two are threatened: Penelope jacucaca and Phylloscartes roquettei. We also provide comments on taxonomy and/or range extensions for some taxa, such as Formicivora iheringi, Sclerurus scansor aff. cearensis, Lepidocolaptes squamatus/wagleri, Syndactyla dimidiata, Hylocryptus rectirostris and Cyanoloxia moesta. In comparison to two other transitional areas of caatinga-cerrado along the Espinhaço Range-the northern Chapada Diamantina (Bahia) and the southern Central Espinhaço (Minas Gerais)-Brejinho das Ametistas shelters less Atlantic Forest birds, probably because the region presents lower elevations and is located in the rain shadow of the "Planalto de Conquista", in eastern Bahia. An analysis of patterns of distribution of endemic and typical birds of the caatinga and cerrado suggests a gradient in which endemic and typical cerrado bird species richness decrease from south to north, but this is not the case for caatinga birds, which present similar richness along this gradient.
Pereira G.A.,Observadores de Aves de Pernambuco |
Pereira G.A.,Federal Rural University of Pernambuco |
Medcraft J.,ACEV Social |
Dos Santos S.S.,Associacao Baiana para Conservacao dos Recursos Naturais ABCRN |
Da Fonseca Neto F.P.,Associacao Baiana para Conservacao dos Recursos Naturais ABCRN
Cotinga | Year: 2014
Recent research into the avifauna of the Caatinga has resulted in three lists of the birds of the biome. However, the Caatinga's avifauna continues to suffer great pressure from human activity due to direct destruction of native vegetation for cattle ranching, indiscriminate hunting and capture of birds for trade. We investigated species richness and the effectiveness of conservation in five areas of the Caatinga in the states of Rio Grande do Norte, Paraíba and Bahia. Field work was undertaken between May 2007 and January 2012, and 238 species were recorded. The areas with the largest numbers of species were São Mamede (Paraíba) with 160 species, Brotas de Macaúbas (Bahia) with 155 species and Carnaubais (Rio Grande do Norte) with 137 species. Parazinho (Rio Grande do Norte) and João Câmara (Rio Grande do Norte) supported 112 and 121 species, respectively. The avifaunas of Parazinho (Rio Grande do Norte) and João Câmara (Rio Grande do Norte) were subject to greatest overlap, presumably due to the structure of their vegetation and their geographical proximity. Thirteen endemics to the Caatinga and two species threatened with extinction were recorded. One species endemic to the dry forests of the São Francisco Valley and neighbouring Bahia, São Francisco Sparrow Arremon franciscanus, was recorded at Brotas de Macaúbas (Bahia). In all five areas the presence of hunters and bird-trappers was common, while significant areas of native vegetation were being replaced by cultivation. Action is proposed to protect native vegetation in order to guarantee the conservation of the region's birds.