Autor(es):
Reinert, Bianca Luiza [UNESP] ; Bornschein, Marcos Ricardo ; Firkowski, Carlos
Data: 2014
Identificador Persistente: http://hdl.handle.net/11449/70161
Origem: Oasisbr
Assunto(s): Area of occupancy; Conservation; Geographic distribution; Habitat; Marsh Antwren; Population; Stymphalornis acutirostris; Territory; alluvial plain; biological invasion; classification; coastal plain; geographical distribution; grass; habitat conservation; habitat type; habitat use; herb; human activity; lowland environment; marsh; passerine; population estimation; population size; spatial distribution; territory; Antonina Bay; Brazil; Itapocu River; Parana; Santa Catarina; South America; Annona; Annona glabra; Antonina; Brachiaria; Brachiaria mutica; Calophyllum; Calophyllum brasiliense; Cladium mariscus; Crinum; Fuirena; Hibiscus; Hibiscus pernambucensis; Laguncularia racemosa; Panicum sp.; Poaceae; Scirpus californicus; Tabebuia; Tabebuia cassinoides; Thamnophilidae; Typha; Typha domingensis; Urochloa arrecta; Area of occupancy; Area of occupancy; Conservation; Conservation; Geographic distribution; Geographic distribution; Habitat; Habitat; Marsh Antwren; Marsh Antwren; Population; Population; Stymphalornis acutirostris; Stymphalornis acutirostris; Territory; Territory; alluvial plain; alluvial plain; biological invasion; biological invasion; classification; classification; coastal plain; coastal plain; geographical distribution; geographical distribution; grass; grass; habitat conservation; habitat conservation; habitat type; habitat type; habitat use; habitat use; herb; herb; human activity; human activity; lowland environment; lowland environment; marsh; marsh; passerine; passerine; population estimation; population estimation; population size; population size; spatial distribution; spatial distribution; territory; territory; Antonina Bay; Antonina Bay; Brazil; Brazil; Itapocu River; Itapocu River; Parana; Parana; Santa Catarina; Santa Catarina; South America; South America; Annona; Annona; Annona glabra; Annona glabra; Antonina; Antonina; Brachiaria; Brachiaria; Brachiaria mutica; Brachiaria mutica; Calophyllum; Calophyllum; Calophyllum brasiliense; Calophyllum brasiliense; Cladium mariscus; Cladium mariscus; Crinum; Crinum; Fuirena; Fuirena; Hibiscus; Hibiscus; Hibiscus pernambucensis; Hibiscus pernambucensis; Laguncularia racemosa; Laguncularia racemosa; Panicum sp.; Panicum sp.; Poaceae; Poaceae; Scirpus californicus; Scirpus californicus; Tabebuia; Tabebuia; Tabebuia cassinoides; Tabebuia cassinoides; Thamnophilidae; Thamnophilidae; Typha; Typha; Typha domingensis; Typha domingensis; Urochloa arrecta; Urochloa arrecta
Descrição
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The Marsh Antwren (Stymphalornis acutirostris) is restricted to the lowlands between Antonina Bay, in the coastal plain of the state of Paraná, and Itapocu river, in the northern coastal plain of the state of Santa Catarina (from 0 to c. 5 m a.s.l.). It doesn't occur continuously in this region, being found in eight populations that span over an total area of about 6,060 ha (= area of occupancy; 4,856.67 in Paraná and c. 1,200 in Santa Catarina). Nine habitat types used by the Marsh Antwren were defined, based on vegetation physiognomy, localization, dominancy of botanical species, dominant life-form and history of the region. Five of these are herbaceous (marshes), while four have an upper arboreal stratum and an herbaceous lower stratum with marsh plants. According to the classification criteria of the Brazilian vegetation proposed by the Radambrasil Project, they were classified as Pioneering Formation of Fluvial Influence, Pioneering Formation of Fluvial-marine Influence, and/or Pioneering Formation of Lacustrine Influence. They occur as patches or narrow strips ranging from 0.001 to 203.0 ha in the state of Paraná. They are found mainly in the interior of bays, in the lower courses of rivers that drain into bays, in alluvial plains, and between sand dunes in the coastal plain. Characteristic herbaceous species are cattail (Typha domingensis), bulrush (Scirpus californicus), Crinum salsum, Panicum sp. cf. P. mertensii, saw grass (Cladium mariscus) and Fuirena spp. Hibiscus pernambucensis is the characteristic bush species, and Calophyllum brasiliense, Tabebuia cassinoides, Annona glabra and Laguncularia racemosa are the characteristic arboreal species. The Marsh Antwren lives in herbaceous vegetation, but also uses bushes and branches of small tress. It has low flight capacity and a single flight of more than 25 m was never recorded. Territories of 0.25 ha were estimated in one kind of habitat (tidal marsh) (= 8 individuals per hectare) and of 3.2 ha in another one (saw grass marsh) (= 0.62 individual per hectare). The global population estimate is of about 17,700 mature individuals (13,700 in Paraná and 4,000 in Santa Catarina). The species is really under threat of extinction, mainly because of it's restricted geographical distribution and habitat loss by human activities and biological contamination caused by invasion of exotic grasses (Urochloa arrecta and Brachiaria mutica).
Pós-Graduação em Ciências Biológicas Universidade Estadual Paulista Júlio de Mesquita Filho e Mater Natura Instituto de Estudos Ambientais, Avenida Senador Souza Naves, 701, 80050-040, Curitiba, PR
Comitê Brasileiro de Registros Ornitológicos e Liga Ambiental, Rua Olga de Araújo Espíndola, 1380, Bloco N, 81050-280, Curitiba, PR
Departamento de Ciências Florestais Universidade Federal do Paraná, Rua Prefeito Ângelo Lopes, 565/11, 80050-330, Curitiba, PR
Pós-Graduação em Ciências Biológicas Universidade Estadual Paulista Júlio de Mesquita Filho e Mater Natura Instituto de Estudos Ambientais, Avenida Senador Souza Naves, 701, 80050-040, Curitiba, PR
