HELPING RESEARCHERS MAGELLANIC NATURE TOURS BIRDING IN USHUAIA

BIRDING IN USHUAIA

The group of CONICET researchers that together with the collaboration of Marcelo (Magellanic Nature Tours) study the natural changes in bird communities in Nothofagus forests of South Patagonia. To face changes of climate in the high latitude forests, long-term studies are necessary to determine the natural variability of the communities in order to develop better conservation strategies. For this, we studied closed and open forests inside the Tierra del Fuego National Park using point counts and mist nests since 2010.

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After 13 years of samplings, we found that bird density and biomass significantly varied among years. In addition, richness was significantly higher in open forests, and density and biomass in closed forests. Density of birds for some functional traits (e.g., insectivores and cavity nesters) also varied among years and forest types. Even some of the most abundant species in these forests showed large variations between years (e.g., Aphrastura spinicauda and Troglodytes aedon).

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These findings allowed us to highlight the importance of long-term studies to visualize natural variations along time. In turn, will allow us evaluate the large-scale factors (e.g., climate change) that affect the planet, which can be slow to impact.

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