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Full-Text Articles in Physical Sciences and Mathematics
Pollinator Populations In Massachusetts Cranberry, 1990 To 2009: Changes In Diversity And Abundance, Effects Of Agricultural Intensification, And A Contribution To The North American Pollinator Survey., Molly M. Notestine
Masters Theses 1911 - February 2014
It is now widely accepted that over one-third of the global food supply depends upon pollinators. Risking severe ecological and economic implications, the status of the 4000 species of bees native to North America has been poorly understood due to a lack of long-term survey data. In this study, I conducted bee surveys on Massachusetts cranberry (Vaccinium macrocarpon Ait.) bogs from 2007-2009 and compared diversity and abundance data to those from historical surveys performed in 1990-1992 on the same bogs. I found that overall bee diversity declined severely in the 19-year survey period, while total bee abundance remained consistent. My …
Competition And Intraguild Predation Among Three Sympatric Carnivores, Jose M. Fedriani, Todd K. Fuller, Raymond M. Sauvajot, Eric C. York
Competition And Intraguild Predation Among Three Sympatric Carnivores, Jose M. Fedriani, Todd K. Fuller, Raymond M. Sauvajot, Eric C. York
Environmental Conservation Faculty Publication Series
We examined the relative roles of dominance in agonistic interactions and energetic constraints related to body size in determining local abundances of coyotes (Canis latrans, 8–20 kg), gray foxes (Urocyon cinereoargenteus, 3–5 kg) and bobcats (Felis rufus, 5–15 kg) at three study sites (hereafter referred to as NP, CP, and SP) in the Santa Monica Mountains of California. We hypothesized that the largest and behaviorally dominant species, the coyote, would exploit a wider range of resources (i.e., a higher number of habitat and/or food types) and, consequently, would occur in higher density than the other two carnivores. We evaluated our …