The New Neotropical Companion
ascertained that the diversification of the genus Inga is no older than 6 million years and may be as young as 3 million years. ...
Diversity in the Tropics: Is It a “Perfect Storm”? Scores of researchers have attempted to summarize the various possibilities f ...
in the Old World. This means that in the 2 million or so years since kingfishers colonized the New World tropics, they have evol ...
species richness. Many questions remain, however. One is the question of how an abundance of plant productivity translates into ...
There are numerous potential prey items in addition to small prey. In a now classic 1971 study Thomas Schoener showed that inse ...
a lot of fruit consumers. None of these groups can exist successfully outside of the tropics, since they are so dependent on con ...
yet another important resource on which some bird species have specialized (plate 9- 20). For example, a visit to a sandbar isla ...
two ways for this to happen. One is that a species’ realized niche (the actual resources it uses) is forced by competition to be ...
most Neotropical lowland forests. These two small cats are similar in body size, though the Ocelot is a bit larger. Both are ess ...
Andean bird communities also show indirect evidence for interspecific competition. John Terborgh and John Weske studied two Ande ...
of frequency- dependent selection, in which the intensity of selection (in the form of predation) depends directly on the abunda ...
Plate 9- 27. Collared Peccary (Pecari tajacu) populations may be influenced by predation more than by competition. Photo by John ...
Is Predation Responsible for Small Clutch Sizes of Neotropical Birds? It is a straightforward fact that forest species of Neotro ...
soil fertility and undergrowth density, both a measure of plant productivity. Large mammalian species tend to range widely and m ...
Plate 10- 1. The Keel- billed Toucan (Ramphastos sulfuratus) is a generalist feeder but consumes many fruits. It flies long dist ...
A Tropical World of Interactions With the profligate plant, animal, and microbial life typical of rain forests, it should come a ...
Others feed heavily on fruit at all times. Some bird species feed on almost nothing but fruit (plate 10- 3). In the temperate zo ...
tapirs, deer, and primates (plate 10- 4). Fruits provide a calorie- rich, nontoxic, and relatively easily acquired resource (it ...
Fruit Consumption Promotes Sociality in Purple- throated Fruitcrows The Purple- throated Fruitcrow (Querula purpurata; plate 10- ...
for one individual to defend the resource, excluding all others. Therefore it is not surprising to encounter flocks of tanagers, ...
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