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Assessing Habitat Preference of Invasive American Minks (Neovison vison) Using Trap-Cameras in Navarino Island, Chile

Description: Poster presented at the 2013 Ecological Society of America (ESA) Annual Meeting. This poster discusses research on assessing habitat preference of invasive American minks (Neovison vison) using trap-cameras in Navarino Island, Chile.
Date: August 2013
Creator: Crego, Ramiro D. & Jiménez, Jaime E.
Partner: UNT College of Arts and Sciences

Tamaño De Puesta, Sitios De Nidificación Y Éxito Reproductivo Del Caiquén (Chloephaga Picta Gmelin, 1789) en La Reserva De Biosfera Cabo De Hornos, Chile

Description: This article studies the breeding biology of the Upland Goose (Chloephaga picta) in terms of clutch size, nesting sites, and breeding success as a function of habitat variables on Navarino Island, Cape Horn Biosphere Reserve, Chile.
Date: September 30, 2009
Creator: Ibarra, J. Tomás; Schüttler, Elke; McGehee, Steven M. & Rozzi, Ricardo
Partner: UNT College of Arts and Sciences

Potential niche expansion of the American mink invading a remote island free of nativepredatory mammals

Description: This article evaluates whether the lack of potential predators and competitors, together with a more diurnal and terrestrial prey, have resulted in the mink expanding its spatial and temporal niche on Navarino Island as compared to that in its native habitats,
Date: December 16, 2017
Creator: Crego, Ramiro D.; Jiménez, Jaime E. & Rozzi, Ricardo
Partner: UNT College of Arts and Sciences

Diferencias morfométricas de dos especies del género Eatoniella en Isla Navarino, Reserva de Biosfera Cabo de Hornos, Chile

Description: This article describes the external morphometrics of shell and radula morphology as performed in two species of micromollusks of the genus Eatoniella in Navarino Island, Chile.
Date: December 29, 2016
Creator: Rosenfeld, Sebastián; Aldea, Cristian; Ojeda, Jaime; Mansilla, Andrés O. & Rozzi, Ricardo
Partner: UNT College of Arts and Sciences

Biodiversity and Genetic Structure of Benthic Macroinvertebrates Along an Altitudinal Gradient: A Comparison of the Windhond and Róbalo River Communities on Navarino Island, Chile

Description: Altitudinal gradients in Sub-Antarctic freshwater systems present unique opportunities to study the effect of distinct environmental gradients on benthic macroinvertebrate community composition and dispersal. This study investigates patterns in biodiversity, dispersal and population genetic structure of benthic macroinvertebrate fauna across an altitudinal gradient between two watersheds on Navarino Island in southern Chile. Patterns in diversity, density, evenness and functional feeding groups were not significantly different across the altitudinal gradient in both the Windhond and Róbalo Rivers. Taxa richness in both rivers generally increased from the headwaters of the river to the mouth, and functional feeding group patterns were consistent with the predictions of the River Continuum Concept. Population genetic structure and gene flow was investigated by sampling the mitochondrial cytochrome oxidase I gene in two invertebrate species with different dispersal strategies. Hyalella simplex (Amphipoda) is an obligate aquatic species, and Meridialaris chiloeense (Ephemeroptera) is an aquatic larvae and a terrestrial winged adult. Contrasting patterns of population genetic structure were observed. Results for Hyalella simplex indicate significant differentiation in genetic structure in the Amphipod populations between watersheds and lower genetic diversity in the Róbalo River samples, which may be a result of instream dispersal barriers. Meridialaris chiloeense exhibited weak population structure but higher genetic diversity, which suggests this species is able to disperse widely as a winged adult.
Date: May 2016
Creator: Pulliam, Lauren
Partner: UNT Libraries