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Page 5 · DO #4222 · 182_Goodspeed_Bx3FF62_r
- Collection
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Thomas Harper Goodspeed (1887–1966) papers
- Item/Folder
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Research Proposal: National Science Foundation; Biological and Medical Sciences Division, 1957
- Digital Object
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DO #4222,
page 5
- Collection-level dates
- 1923–1963
Page transcription
Project -- Evaluation and clarification of phytogeographic problems in temperate South America, 1957-59, T.H.Goodspeed
The following specific research projects are derived from long contact with the floras of temperate South America, their character and distribution (cf. p. 1). The particular areas involved in each case appear to be critical, in terms of geologic history, for evaluation of postulates concerning trans- and inter-Andean plant distribution and the origin and evolution of the vegetation they now exhibit.
I. Factors influencing trans- and inter-Andean plant distribution
Peru
(1) In 1942-43 some collections were made of the largely unknown vegetation on the altiplano of northwestern Dept. Puno from the Cordillera de Carabaya eastward toward the Rio Inambari. The evidence obtained points to relationships between species of that Peruvian altiplano and those of the better known altiplano of adjacent Bolivia. When more fully documented it will constitute critical evidence in support of the postulated role of high plateaus established prior to recent vertical uplift as ancient pathways of trans-Andean plant dispersal. To obtain such documentation intensive collecting will be carried on in Dept. Puno.
(2) Preliminary examination of the vegetation of the vast canyon of the Rio Marañón in Dept. Cajamarca some 200 miles below its source shows remarkably sharp zonation of its elements under the influence of altitude and exposure. This evidence will be verified and greatly extended by collections and vegetation mapping along the Marañón, beginning at its source in Dept. Huanuco, to produce a hitherto undocumented picture of the relation of environmental factors to the character and distribution of inter-Andean floras.
Chile
The botanically little known vegetation in the area of juncture of Chile, Peru, Bolivia and Argentina in Prov. Tarapacá appears to provide specific evidence concerning limitation on plant distribution imposed by the establishment of the present day Andean crest. Verification of this postulate requires determination of the composition of the vegetation of the area and of the role of passes (particularly between Chile and Argentina) as recent avenues of trans-Andean plant migration.
II. The antarctic element in the vegetation of South Central Chile
Post glacial relics of the current vegetation of South Central Chile, a temperate rain forest, are known to occur in arid North Central Chile. These relics, existing today in a semi-desert, form "islands" containing depauperate equivalents of South Chilean species and point to relatively recent alterations in climatic conditions in Chile. That, correspondingly, "islands" of subantarctic species, characteristic today of Chilean Patagonia, occur in the temperate rain forest of South Central Chile has been suspected. Preliminary evidence indicates that the unique flora of the isolated Cordillera Pelada on the southern extremity of western Prov. Valdivia (41° S) is such a subantarctic relic. To establish this fact and the influence of subantarctic elements on the composition of the surrounding rain forest intensive collecting and vegetation mapping is projected.