Breeding strategies of open-cup-nesting birds in sub-Antarctic forests of Navarino Island, Chile (open access)

Breeding strategies of open-cup-nesting birds in sub-Antarctic forests of Navarino Island, Chile

Article describing the breeding strategies (i.e., nest dimensions, nest height from the ground, egg laying rhythm, clutch size, length of the developmental periods, breeding phenology, and diversity of nesting substrate) of five passerine birds that inhabit sub-Antarctic ecosystems.
Date: November 20, 2018
Creator: Jara, Rocío Fernanda; Crego, Ramiro D.; Arellano, Francisco Javier; Altamirano, Tomás A.; Ibarra, J. Tomás; Rozzi, Ricardo, 1960- et al.
System: The UNT Digital Library
Altitudinal gradients in Magellanic sub-Antarctic lagoons: the effect of elevation on freshwater macroinvertebrate diversity and distribution (open access)

Altitudinal gradients in Magellanic sub-Antarctic lagoons: the effect of elevation on freshwater macroinvertebrate diversity and distribution

In this article, freshwater macroinvertebrate diversity associated with lakes and ponds along the altitudinal gradient of a Magellanic sub-Antarctic watershed are assessed. A monotonic decline in species richness was observed with increasing elevation, with simpler and more even community composition at higher altitude. This pattern differs from the mid-peak trend found in streams of the same watershed. Functional feeding group structure also diminished with increasing elevation.
Date: July 29, 2019
Creator: Rendoll Cárcamo, Javier; Contador, Tamara; Gañán, Melisa; Pérez Troncoso, Carolina; Maldonado Márquez, Alan; Convey, Peter et al.
System: The UNT Digital Library