Prey digestion in the insectivorous plant Sarracenia purpuero was investigated with consideration of three sources of proteolytic enzymes self-digestion by the prey, bacteria in the plant pitcher, and enzymes produced ...

Theories of density-dependent habitat selection predict pronounced gradients of population density near habitat edges. Population density in high-quality habitats should decline toward edges with lower-quality habitats, ...

White-tailed deer (Odocoileus virginianus), of known age, collected in northeastern Minnesota (n=379) from November 1991 to May 1993 were examined for Parelaphostrongylus tenuis. Prevalence and intensity estimates ...

I analyzed the resistance and resilience of benthic macroinvertebrate and zooplankton communities from 36 trophically similar lakes north of Thunder Bay, Ontario to test predictions of the Oksanen et al. (OFAN) model of ...

Four monoterpenes and two monoterpenoids, (+)- and DL-limonene, (1S)-(3) carene, terpinolene, cineol and rose oxide, respectively, were studied using selected ion flow tube-mass spectrometry. Specifically, the reactions ...

The purpose of this study was to quantify the effects of heavy metals on pigments and photosynthesis in four and a half month old black spruce (Picea mariana (Mill.) B.S.P.) seedlings. Photosynthetic pigment analysis by ...

Complete mixing of the water column of lakes is important to ensure that nutrients and dissolved oxygen are replenished and equalized throughout the lake. This ensures that organisms within the lake at all trophic levels ...

The response of the Henderson Lake boreal fish community to a large scale exploitation of walleye was studied. The pulse fishery removed approximately 89 percent (3226) of adult walleye (1980-82) from Henderson lake ...