Specific Diversity and Zerophyc Adaptation of the Lomas Vegetation, along the Coastal Desert of South America.
Grant-in-Aid for international Scientific Research
|Allocation Type||Single-year Grants|
|Research Institution||Tokyo Metropolitan University|
ONO Mikio Makino Herbarium, Tokyo Metropolitan University, 理学部, 教授 (80087155)
SUZUKI Kazuo Makino Herbarium, Tokyo Metropolitan University, 理学部, 助手 (50187712)
OKA Shuichi Faculty of Science, Tokyo Metropolitan University, 理学部, 助手 (50106605)
OHGA Nobuhiko Faculty of Science, Chiba University, 理学部, 講師 (70009059)
MASUZAWA Takehiro Faculty of Science, Shizuoka University, 理学部, 助教授 (40111801)
MUNOZ SCHICK Melica Museo National de Historia Natural, Santiago, CHILE
|Project Period (FY)
Completed(Fiscal Year 1993)
|Budget Amount *help
¥6,900,000 (Direct Cost : ¥6,900,000)
Fiscal Year 1993 : ¥6,900,000 (Direct Cost : ¥6,900,000)
|Keywords||LOMAS VEGETATION / ZEROPHYC ADAPTATION / SPECIATION / DESERT / SOUTH AMERICA / SEED BANK / POLLINATION / NOLANA|
The Lomas vegetation is a seasonal meadow which appears in the coastal desert of Peru and Chile.
It occurs only in Spring (from August to November or December), and grows very rapidly to bloom all at once. After fruitfication in general, it disappeares in a very short duration.
Besides, they occur along the Pacific Coast from north to south, very seperatedly in distance, consequently each meadow (called as lomas) is isolated each other about 100km or by further. Therefore the situation seems similar to an oceanic island. In this project we intended to study the taxonomic diversification of plant species between each loma from the viewpoint of island biology.
Actually, the field surveys have been carried out mainly in the desert near Copiapo, about 700km north of Santiago, Chile.
We have also intended to analyze the physical background of this vegetation; topographical and climatological surveys have been carried out for this purpose.
The growing season of the lomas community is restricted to a short period during which sufficient moisture is available from the sea-fog, locally called as "garua". Therefore the life-cycle of the plants growing in the lomas must be completed within less than about three months. In this respect the growth analytical survey has been carried out on several species, such as Calandrinia and Fortunetia.
Furthermore, the surveys on the pollination and seed-dispersal mechanism in these isolated plant populations are studied. As a result, the main pollinator of the genus Nolana, one of the principal taxonomic group of the lomas community has been observed as bee.
The balance sheets of buried seed (so called as seed-bank) were also surveyed as well as meteological data at several points within the area.
Research Products (10results)