Argentina field notes, v1529
Page 97
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Transcription
Pearson - 1988 40 20 that they had "rescued" when the refrigerator broke down. Also stopped to talk with Sigfriedo Rubulis. He says the winter was cold, not much snow, so the ground froze deeper than usual. I could not pin him down to any definite statements about glaciers on the Cuyin Manzano. He thinks Flint and Fidalgo's statements about number of glaciers, extent, etc., are based on slight evidence and probably not true. Sigriedo does not think rounding of hilltops is a good indicator of how deep the glaciers were. He also points out that there must have been minor glaciers coming down the side valleys to complicate the picture. November 5- Bariloche. Did laparotomies on captive Akodon and built cages. Weather mostly sunny. November 6- Bariloche. Rain overnight, morning clear and windy. Had a brief visit with Albert Franzmann and wife Donna, big game expert from Alaska. Chehebar, Eduardo Ramillo, and Michael had been showing him around, and he was about to leave for Tierra del Fuego, later to work with Roig in Mendoza. Worked with longipilis data, then in afternoon counted bamboo leaves at one of our marked clumps on Cerro Otto. Snow gone. Then set traps in the bamboo/lenga/grass, especially along the edge of swath that had been cleared about 2 years ago for a ski trail. Cut bamboo and logs had been pushed in windrows along the mqrgins; good cover. I set 32 Sher mans and 20 Museum Specials. Anita set 29 Sher mans and 27 Museum Specials. Cool, windy, scattered clouds. November 7- Bariloche. Morning cool, clear. Ran traps on Cerro Otto. This trapping site is below Piedras Blancas on the east slope. My traps had 3 live Ako longi and 1 dead, 1 live and 1 dead Aulisc omys, and 1 Akodon olivaceus. Anita's had 3 live Ako longi, 4 dead Ako longi, and 1 dead Akodon olivaceus. These olivaceus are small and xanthorhinus-like, similar to the ones from the Hipodromo west of Bariloche. The 107 traps held 14 mice. Chehebar came to talk about his otter and mink data. The otters are eating almost entirely crustaceans, only a small amount of fish. He doesn't find otters in those drainages without the crustaceans. The mink eat mostly crustaceans also, but also mice, birds, fish; no coy pu. Michael Christie came by. With Franzmann he had seen guanacos along the east side of the Limay below Nahuel Huapi.. He told of a paper by ?Noria? on speciation of Sporophila. Apparently, in the pampa area in the past, a modest rise of sea level created ?three? long, east-west peninsulas that provided suitable habitat for Sporophila, and cut off from each other by forests to the west. This might explain tuco-tuco distribution? The north-south sand ridges on the pampas, coupled with these peninsulas, would explain a lot of chaotic tuco speciation. ?Noria? also claimed that everything on the Chilean side of the mountains south of Puerto Mont was wiped out by glaciers down to the sea. Maybe Chiloe was a Pleistocene nunatak where Dromiciops, Irenomys, Akodon