Wiederholt

Choosing one species from each of the four genera of Atelines, Wiederholt and Post examined abundance trends and dynamics in populations of the muriqui (Brachyteles hypoxanthus, formerly B. arachnoides) of Brazil, the woolly monkey (Lagothrix lagotricha) in Colombia,

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Wiederholt and Post decided to concentrate on the way the oscillating weather patterns directly and indirectly influence plants and animals in the tropics.

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"We expected to find a strong relationship between the large-scale climate and the population dynamics of these species," explains Wiederholt.

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To examine these factors on a regional and local scale, Wiederholt and Post used information on mean annual temperature, rainfall, and the length of the wet and dry seasons for the years between 1960 and 1990 in Venezuela, Brazil, Barro Colorado Island, and Colombiaavailable.

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Wiederholt and Post needed to compare information on the monkey populations with data on fluctuations in food resources such as leaves, seeds, and fruits.

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Until the research by Wiederholt and Post, this intricate network of interacting factors had rarely been analyzed as a single system.

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"The last four years in Kansas we've had a gathering like this, and it's been so dang much fun," Vice President Phil Wiederholt of Osage City, Kan., said.

Columbia Missourian: Latest Articles 2009

A national expo show is also in the works, and Wiederholt said he wants to promote Missouri as a potential location.

Columbia Missourian: Latest Articles 2009

The mechanism is not yet clear, but Wiederholt has some ideas.

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By studying the different species, Wiederholt and Post hoped to highlight the importance of the response to changing climate conditions of the trees that provide the dietary resources for the monkeys.

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