INVESTIGADORES
IRIBARNE Oscar Osvaldo
artículos
Título:
Diversity and habitat distribution of birds in coastal marshes and comparisons with surrounding upland habitats in Southeastern South America
Autor/es:
ISACCH, J.P; A. CARDONI; O. IRIBARNE,
Revista:
ESTUARIES AND COASTS
Editorial:
SPRINGER
Referencias:
Lugar: Berlin; Año: 2014 vol. 37 p. 229 - 239
ISSN:
1559-2723
Resumen:
Abstract We studied variation in bird assemblages with plant
associations for three different coastal marshes from
Southeastern South America (SESA) and assessed how marsh
bird assemblages related to nearby upland bird assemblages.We
surveyed bird species and plant structure along the tidal gradient
of each locality from the low tide level to the upper habitats
bordering coastalmarshes. Twenty species frequently used coastal
marshes, including relatively few migratory species.We found
that birds occurring in SESA coastal marshes do not have
distributions constrained to coastal marshes. Nonetheless, four
bird assemblages were recognized in association with vegetation
types and/or sites. Among the recorded coastal marsh species, the
bay-capped wren-spinetail (Spartonoica maluroides) is both the
most frequent and the most habitat constrained. Bird richness
increases steadily along the tidal gradient associated with the
increase in vegetation structure, suggesting that bird richness is
directly explained by vegetation and indirectly by the physical
conditions influencing vegetation structure. Results highlight the
importance of SESA middle marshes as habitat for conservation
of some threatened SESA grassland birds.