Tag Archives: lake

Mendoza 4: Back to Bariloche, but first some birds

We’re about to leave on a new adventure so here’s a quick post to finish the story line from last month’s trip to Mendoza.  We left Mendoza and drove 14 h south, pretty much non-stop.  This was not enough to reach Bariloche; we ended up near Neuquen and spent the night.  The following day we took a slight detour to travel via Laguna Blanca National Park.  This park is known for its waterfowl (see the pics).  The Lonely Planet reports that the lake has no fish; this is actually probably why the ducks and flamingos would like this lake, as there would be many plankton for them to eat.  So, we were a bit surprised to see various fishermen along the shores, as well as, well, FISH swimming in the shallow waters.  This discrepancy was later explained by our friends Esteban and Beatriz, who report that fish were introduced some years ago into a small bay that was in private hands.  The owner’s claim was that the fish would stay in the bay.  Silly.  Of course, they went everywhere in the lake and are at great abundance.  Good for fishermen but not for flamingos and ducks, who would certainly prefer a lake full of big copepods and Daphnia.    Anyway, enjoy the pictures, which include a gratuitous shot of a grasshopper (that refused to hop; I think it didn’t want to be suspended in the 40 mph wind), just for Arianne.

OK, off to Salta today!

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First trip to the volcano zone

On Friday we went to the lakes to the northwest, closer to the Puyahue eruption and near the devastated town of Villa la Angostura.  (full set of pictures at: LINK)   The crew consisted of me, Monica, Esteban Balseiro, and postdoc Marcela Bastidas.  The picture below is from Lake Espejo Grande, and shows the dock and “beach”.  Obviously, a lot of pumice has accumulated here, on the downwind side.  The turquoise color of the water is also a sign of the volcano – normally the lake is dark blue and super-transparent.  Along with many other lakes, it now has the turquoise cloudiness like a lake receiving glacial flour.  But the cloudiness is from the suspended ash.  Despite a steady rain, we took pumice samples here and in an arm of Lake Nahuel Huapi, as well as water samples in a shallow lake called Lago Pire.

Pumice accumulated at the downwind end of Lago Espejo Grande, ~20 km from the Puyahue Volcano