Argentina field notes, v1529
Page 125
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Transcription
Pearson - 1988 52_38 agreed that it bloomed a year later at Puelo. He said that Bernadino ?Huaynun? had an Estancia on the Llao Llao Peninsula but that the Park evicted everyone in 1936. The cows would have been removed about then, leaving a few horses maybe. Bernardino's father was born in 1799 and lived into the 1900s; he was indian. Lived partly on Isla Huenul, which was indian for sky; not Huemul. He remembers a rosa mosqueta bush at Nahuel Huapi in 1908, so there would have been lots around by the flowering of 1939. November 22- Puerto Blest. We have become increasingly aware of young clumps of bamboo, noted especially along the trail near La Cascada, near our marked bamboo clump on the grid, and along the trail to Cantaros just beyond the Post Office. These are always small clumps of small canes of graduated diameters; frequently we can find a dead clump within 5 m or so. The smallest culms, and presumably the earliest, are always short, smallest in diameter, and dead. Frequently they are branched. There may be 2 or 3 of them. The next larger culms are progressively larger in diameter, taller, and have more nodes, but frequently are dying back at the tip. We measured all the culms in one such clump near our measured clump on the grid, including leaf and leaf-scar counts on several branchlets of each culm. There are so many of these young clumps around, probably less than 10 years old, that we must conclude that there has been successful reproduction during our study. No mass flowering, but some seed production and successful sprouting. We still have not seen a "seedling". But it seems as though some of the clumps that flower do produce a few seeds, perhaps through pollination by a distant flowering clump or through inefficient self-pollination. A few viable seeds are then produced, not even enough for a ratada, nor enough to produce "a Buenos Aires wheat field", but enough so that the maverick out-of-sync bloomers are producing offspring. I continue to be impressed at the extent of parasitization of new shoots. At all of our study sites, a large percent never make it to full size. Escaping from parasites seems to be the most viable explanation of what drives the long-term, synchronous-bloom cycle. We walked our census along the Frias road from the south end of the camping meadow to El Abuelo, something like 2 kms, and counted 7 blooming culms on the West side of the road and 11 on the East (river) side. At least half of them were half-baked bloomings in which only a couple of culms were involved, or some culms had bloomed last year in part and were continuing blooming this year. One branchlet from the marked clump on the grid was 106 cm long, had 4 leaves, and 42 leaf scars. Another long branchlets from along the Cantaros trail was over 1 m long and had 52 leaves and leaf scars. Another not so long had 15 healthy leaves, plus some scars.