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Full-Text Articles in Physical Sciences and Mathematics
Sporti: The Species Originality And Rarity Index Combines Phylogenetic And Functional Originality With Rarity Metrics To Provide A New Perspective On Species Rarity, Michael Cunningham-Minnick, Joan Milam, David I. King
Sporti: The Species Originality And Rarity Index Combines Phylogenetic And Functional Originality With Rarity Metrics To Provide A New Perspective On Species Rarity, Michael Cunningham-Minnick, Joan Milam, David I. King
Environmental Conservation Faculty Publication Series
Methods used to assign rarity among species are fundamental to our ecological understanding and conservation of species that are most vulnerable to extinction or extirpation. Bees (Hymenoptera: Apoidea: Anthophila) are at the forefront of declines in pollinator diversity and a comprehensive understanding of their conservation requirements in any landscape is essential. Rarity is generally defined in terms of numerical abundance and geographical distribution, though aspects of species life history, such as degree of specialization and taxonomic relatedness, are also widely recognized as important. Incomplete information on the life histories of many taxa obliges ecologists to rely on species-level classifications of …
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 …