Argentina field notes, v1530
Page 169
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Transcription
Pearson - 1991 marked balmboo clumps. Then back to Lago Guillermos to check the tuco traps and set some more. We had as many as 23 steel traps set. No sign of fresh digging, but no trouble locating big underground tunnels. Caught 3 big females, but released one of them. Heard one tuco calling and set 3 traps nearby, but didnt catch him, and he didnt block the tunnels where the traps were set. In fact, we either caught the tuco (3 of them), or the traps were undisturbed. Back to Bariloche at 6:30 p.m. December 11.- Visited the Parques Office and talked with Claudio Chehebar and Eduardo Ramilo. We checked rainfall records from Pampa Linda and Puerto Blest and decided that the May 1981 record from Pampa Linda is probably correct (Siegfrido Rubulis) and that the 83mm at Puerto Blest was the result of instrument failure. Abel Basti's notes indicate that June and July are probably ine rror also. A regression of Pampa Linda mean monthly rainfall against Puerto Blest rainfall for 44 months for which data are available, and leaving out May, June and July of 1981, which are suspect at Puerto Blest, I get an r = +.87 and rainfall at PB is 44% greater (or at Pampa Linda is 69%). The two localities are 22 km apart. Mean monthly ppt. at Puerto Blest = 1.125X + 45.13 Mean monthly ppt. at Pampa Linda = .671Y + 4.482 Then set tuco traps up on Cerro Otto near Piedras Blancas. Overcast, a dusting of new snow. Set 10 steel traps in the dandelion meadow between 11 a.m. and 12:15. Ran traps at 12:45 and had 1 male (kept for Rosi) and 1 female (released). One other trap plugged. Set 1 more trap, then picked them up at 1:30. Nothing more in them. No signs of new diggings anywhere, and heard none, but no trouble finding big underground tunnels. Rapoports came for tea. He is wondering why so few species of plants in Buenos Aires Province. Grazing by early releases of livestock? Fire? Outcompeted by European weeds? I lent him my copy of Macann's "Journey by horseback" which I think copntains reference to a sea of horse-high thistles, as in Darwin. December 12.- Bariloche. Drizzly. To Betinnellis'. Then Christie came by with asample of amberat from a rock crevice right by the road 1 km W Confluencia; definitely consolidated, but the individual droppings not defineable. Everything in the cave is covered with dust from the road. Then Fluecks came by. They say that there was a great local outcry when Estancia Fortin Chacabuco removed 130 deer a couple of years ago. The owner's representative, Roger Weewell?, says they could remove 300 per year without harming the population. December 13.- Julieta von Thungen came by. She is still at INTA, working on foxes, use of dogs to protect sheep from foxes, and collars on sheep laced with 1080 to kill killer foxes. Then at 7 p.m. we went to Llao Llao to catch moths. Camped back the Fogon road to Lago Moreno. Moths of three sizes were flying at dusk, but they