The effect of alternate prey availability on the functional response by naiads of the damsel fly Anomalagrion hastatum to change in the density of a cladoceran prey (Daphnia magna or Simocephalus vetulus) was measured in ...

Vegetation, soil, history (land use and tree age), site favorability (tree growth rates), and flammability were examined in four contiguous East Texas communities, two of which are savannas. The data suggest that woody ...

Using C-labeled amino acids, absorption of L-lysine, L-arginine, L-glutamate, L-phenylalanine, L-methionine, L-threonine, L-alanine, and L-glycine were studied. All amino acids appeared to be absorbed by both simple diffusion ...

Quercus falcata Michx. growth rate, importance (basal area), tree form, and bark texture were examined over a local gradient in soil moisture (as inferred from site vegetation, slope position and soil texture) . At drier ...

Lead shot deposited in wetland ponds by waterfowl hunters over a number of years may be a significant source of lead in localized areas in this environment. To determine whether such shot contributes to the overall lead ...

The fungus, Mucor rouxii, can grow in two morphological states depending on culture conditions. The present work analyzed total RNA populations from aerobically grown filamentous cells and anaerobically grown (in an ...

Calcium removal from bone of the amphibian, R. catesbiana, was studied utilizing the technique of peritoneal lavage. Calcium changes in the lavage fluid were compared in parathyroidectomized and control frogs at two ...

An extrarenal nitrogen product has been identified in two terrestrial snails, Otala lactea and Helix 2219.0a. The nitrogen waste has been determined qualitatively to be ammonia, This ammonia which is excreted has also been ...

The affinity of the bacterial enzyme L(-)-tyrosine decarboxylase for a wide variety of substrates has once been implied by the result of this study. Like the mammalian aromatic L-amino acid decarboxylases, L(-)-tyrosine ...