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Interactions among temporary and permanent meiofauna: Observations on the feeding and behavior of selected taxa Interactions among temporary and permanent meiofauna: Observations on the feeding and behavior of selected taxa

Meiofauna diets and behavioral patterns are relatively unknown despite the fact that in any system, predatory relationships and behavioral responses may play an important role in determining community structure. Therefore, observations on food preferences, feeding behavior, and encounter interactions of members of a meiofauna assemblage were made in the laboratory in dishes of natural...
Authors
Mary C. Watzin

Contaminant concentrations in manatees in Florida Contaminant concentrations in manatees in Florida

The status of the endangered manatee (Trichehus manatus) in relation to organochlorine pesticides, polychlorinated biphenyls, mercury, lead, cadmium, copper, iron, and selenium was investigated in Florida from 1977 to 1981. Concentrations of organochlorines in blubber, mercury in muscle and liver, lead in liver, and lead and cadmium in kidneys did not indicate high exposure to these...
Authors
Thomas J. O’Shea, John F. Moore, Howard I. Kochman

Habitat Suitability Index Models: Great egret Habitat Suitability Index Models: Great egret

The great egret, also called common egret or American egret, is a large white heron tn the order Ciconiiformes, family Ardeidae. Great egrets stand 94.0-104.1 cm (37-41 inches) tall and have a wing spread to 139.7 cm (55 inches) (Terres 1980). The species is associated with streams, ponds, lakes, mud flats, swamps, ahd freshwater and salt marshes. The birds feed in shallow water on...
Authors
Brian R. Chapman, Rebecca J. Howard

Adaptive variation in offspring size in the terrestrial isopod, Armadillidium vulgare Adaptive variation in offspring size in the terrestrial isopod, Armadillidium vulgare

Variation in the birth size of offspring of the terrestrial isopod, Armadillidium vulgare, was observed in laboratory experiments and in field populations. In the laboratory, larger offspring were produced when the mother's food supply was reduced. In field populations, larger offspring were produced during the summer, a period of reduced food availability. Smaller offspring are produced...
Authors
M.S. Brody, L.R. Lawlor

Mapping of forested wetland: Use of seasat radar images to complement conventional sources Mapping of forested wetland: Use of seasat radar images to complement conventional sources

Distinguishing forested wetland from dry forest using aerial photographs has been handicapped because photographs often do not reveal the presence of water below the tree canopies. Images obtained during the summer months of 1978 by the Seasat satellite's L-band (23-cm) radar reveal forested wetland as patterns of high radar reflection in the Atlantic coastal plain between Maryland and...
Authors
John L. Place
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