ABSTRACT. Composition and dynamics of birds of the wind farm of the beach of the Pedra do Sal, Delta do Parnaíba, Piauí, Brazil. The impact of wind farms on birds is one of the least studied themes in Brazil, which contrasts with the importance of this new source of renewable energy. The present study aimed to characterize the composition and ecological dynamics of species of resident and migratory birds present in the area of Wind farm of the Pedra do Sal, in Parnaíba, state of Piauí. The study was developed through thirty-three samples distributed in two complete seasonal cycles (September 2011 to August 2013, by the method of point counts disposed at the base of each wind turbine. We recorded 6,843 contacts of birds belonging to 67 species in 22 families and 13 orders, and the species with the highest number of contacts was the Charadrius collaris Vieillot, 1818. The predominant trophic categories were the insectivorous birds (18 species) followed by birds that feed on aquatic invertebrates (17 species). The majority of birds recorded is from aquatic environments. During the development of this study, no collisions between birds and wind turbines were recorded. KEYWORDS.Abundance, ecology, migration, seasonal abundance, shorebirds. RESUMO.O impacto dos parques eólicos sobre as aves é um dos temas menos estudados no Brasil, o que contrasta com a importância dessa nova fonte de energia renovável. O presente estudo buscou caracterizar a composição e dinâmica ecológica das espécies de aves residentes e migratórias presentes na área da Usina Eólica da Pedra do Sal, em Parnaíba, Estado do Piauí. O estudo foi desenvolvido por meio de trinta e três amostragens distribuídas em dois ciclos sazonais completos (setembro de 2011 a agosto de 2013), através do método do ponto de escuta, dispostos na base de cada um dos aerogeradores. Foram registrados 6.843 contatos de aves pertencentes a 67 espécies distribuídas em 22 famílias e 13 ordens, e a espécie com maior número de contatos foi a batuíra-de-coleira (Charadrius collaris). As categorias tróficas predominantes foram as das aves insetívoras, representadas por 18 espécies, seguidas pelas aves que se alimentam de invertebrados aquáticos (17 espécies). A maioria das aves registradas é de ambiente aquático. Durante o desenvolvimento desse estudo não foram registradas colisões entre as aves e os aerogeradores.
Phytosociological analysis was used to quantify the structure of a disturbed mangrove next to a tidal creek of the Rio Igaraçu, Piauí, northeast Brazil, and comparison was made with a survey made fourteen years earlier. Thirty 10×10 m plots were demarcated in three areas of ten plots each. Height and circumference of trees of circumference at breast height ≥ 15 cm were measured in 285 individuals of Avicennia germinans (L.) L., Laguncularia racemosa (L.) C.F.Gaertn. and Rhizophora mangle L. Height ranged from 1.5−15 m (mean 4.4 m) and diameter from 4.8−28.7 cm (mean 7.2 cm). Avicennia and Laguncularia showed the highest parameter values (importance values 52% and 44%, respectively). Furthest from the creek and subject to less frequent tidal flooding, only Avicennia occurred, shorter (mean height 3.8 m) and fewer (density 130 ind ha−1) than elsewhere. In the central area (density 1240 ind ha−1) Avicennia dominated Laguncularia (importance values 53% vs. 47%). All species occurred nearest the creek (density 1480 ind ha−1, importance values Laguncularia 47%, Avicennia 46%, Rhizophora 7%), and heights and diameters were lower. Changes from a previous study suggest selective logging of larger individuals nearer the creek, especially Rhizophora, favouring regeneration of Laguncularia.
Formicivora grisea (Boddaert, 1783) (Aves: Thamnophilidae), popularly known as white–fringed antwren, is a common species in Brazil, occurring from the Amazon to eastern part of this country, living in the edges of wet and dry forests, secondary forest, capoeira and Restinga Forest, Caatinga Forest and secondary forest. This study presents a documented record and ringing of two individuals of this species on the coast of Piauí. The specimens, a female and a male, were captured with mist nets during sampling effort on a Restinga area with elements of Cerrado and Caatinga the aim of the avifauna characterization and inventory on the ecosystem situated near the International Airport of Parnaíba, Piauí, on 12/IX/2010..
O presente estudo buscou levantar a avifauna de uma área de carnaubal situada no município de Parnaíba/PI, sendo desenvolvido por meio de quatro amostragens semanais durante um ciclo sazonal completo, totalizando 48 amostragens. O método foi desenvolvido através de amostragens em transecções, buscando caracterizar quais são as espécies de aves residentes e migratórias, e a sua relação com o ambiente na busca por alimento, água, abrigo, sítios de nidificação e de descanso, bem como a presença de rotas migratórias. Foram registradas 2131 contatos com aves pertencentes a 36 espécies distribuídas em 19 Famílias e 13 Ordens. A Ordem Cuculiformes foi a que mais se destacou, com 586 contatos registrados, e a família mais abundante foi Ardeidae, com seis espécies. A guilda trófica predominante foi a das aves onívoras (15 espécies). As espécies registradas em maior número (n=13; 36% do total) ocorrem em ambientes de campo aberto não inundável, seguida pelas aves de ambientes aquáticos: lagos, rios e banhados. O reconhecimento das aves ripícolas como espécies aquáticas ainda não é usual, porém, há um consenso de que há assembleias de espécies próprias desses ambientes.
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