The New Neotropical Companion
He was correct, though he had underestimated the actual age of the site. Stephen Hubbell and Robin Foster, in a later study, est ...
intensity, bringing about dramatic changes that were felt throughout the food web. Studies by numerous researchers have shown th ...
Once a City, Now a Rain Forest There are three well- known groups of people who have played major roles in the history of Centra ...
used for cattle pasture. Sites had experienced light, medium, or heavy use for up to 13 years and ranged from two to eight years ...
The combination of frequent fire and exotic grass invasion results in a grass– fire cycle that stabilizes in the occupancy of th ...
Pioneer species, unsurprisingly, thrived in environments of high light intensity. Non- pioneer species exhibited high mortality ...
falling branch, or a single fruit, or whole tree, or perhaps buried beneath a fallen palm frond or some other large leaf. Herbiv ...
The forest may be undergoing a long- term change in species composition. This, of course, will be increasingly evident with cli ...
forest understory. It is estimated that about 700 species occur in the American tropics. (Another 300 species are found in the A ...
resembling a parasol (plate 7- 20). Leaves are whitish underneath and frequently insect- damaged. Dried, shriveled cecropia leav ...
flower holds four long, whitish catkins, hanging in fingerlike clusters. Research in Mexico showed that 48 animal species, inclu ...
Central American Successional Crop System Slash- and- burn (a.k.a. swidden) agriculture (chapter 17) has much in common with eco ...
which open on the tree. Each seed is surrounded by silky, cottony fibers called kapok (hence the names Kapok and Silk- cotton Tr ...
Evolution and Biogeography If you visit a tropical moist forest in Brazil and then visit one in Sabah, Malaysia, in northern Bor ...
Plate 8- 4. The complex topography of the Andes Mountains, a long chain with numerous ridges, valleys, and elevation gradients, ...
from ongoing plate tectonics, which is the geological process in which Earth’s large basaltic plates, some bearing continents an ...
Analyses of bird distribution patterns throughout South America by Joel Cracraft, Jürgen Haffer, and others have demonstrated nu ...
Genetic variability originates through the random process of mutation, a sudden and unpredictable change in a gene. Mutation is ...
No Old World monkeys have prehensile tails, and they seem to do fine. Thus a prehensile tail, while adaptive to those that have ...
(including horses and ground sloths) became extinct in what is now Costa Rica. These included an elephant- like group called the ...
«
1
2
3
4
5
6
7
8
9
10
»
Free download pdf