Argentina field notes, v1530
Page 87
Image from the Biodiversity Heritage Library. Contributed by Museum of Vertebrate Zoology, University of California, Berkeley. | www.biodiversitylibrary.org
Transcription
broad-leaved bush. In fact, another reason for synchronous blooming would be to avoid having the seedlings compete with well-established adult clumps (which are so dense at our Llao Llao study area). November 28- Along the trail down from Refugio Frey, a few hundred feet above Lago Gutierrez, is a piece of coihue forest with scattered clumps of young bamboo, NO old clumps and no dead clumps. The young clumps have about 5 to 10 small culms each. There must have been a mass blooming maybe 15 years ago? There used to be a saw mill near the bottom of this trail. December 4- Puerto Blest. The big clump on our study grid was in bloom. Not many blooms on any one culm, but about 30 of the culms on the SW side of the clump had a few flowering heads and only a few did not. The rest of the clump was not flowering. There were 2 or 3 new shoots on the northeast side of the clump, but not on the SW side. Seems that this clump is composed of 2 or more plants. Ran the census to El Abuelo with Peter, 2 plants blooming on each side of the road, =4 plants blooming. Anita and Peter measured 3 new shoots at 5 p.m. yesterday afternoon and again at 8 a.m. One of them had grown 3cm overnight; temperature at 8 a.m. about 10 C. December 5- Puerto Blest. Photoed the dead clump at the Post Office (Prefectura) with Sandy and Prefectura sailor Jose. It is still clearly visible (after 12? years). No branches but lots of standing culms, being invaded by raspberries. There is another big clump blooming on the south edge of the camping meadow. Photoed the clump that bloomed about 3 years ago near the camping shelter house. Some new shoots at Blest are more than 1m tall and have drops of liquid at the tips of the culm sheaths. Nearby dead shoots have no such liquid. Also, the drops sometimes are touching without coalescing, hence are not pure water. December 7- To Llao Llao and ran a census from near our marked Auxiliary plant due north for 24 m minus 20cm, and for 1 m on each side of the of the cord. Tallied all live culms over 1 m and all dead culms over 1 m. This is fairly large second growth coihue forest and has a quite dense bamboo stand. December 10- Castano Overo. Both our study clumps were undisturbed. Wild pigs had been rooting up turf along the road, and a few bamboo shoots were lying about, maybe pigs? maybe cows? We measured growth of bamboo shoots for 24 hours. The tallest ones were 1.4m tall. Temperatures ranged from about 60 down to 34 or 36 (see data), mostly below 50, and growth rates were about 1mm per hour. The taller ones grew faster and were still increasing their growth rate. At Puerto Blest we found that they grew considerably overnight.