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Full-Text Articles in Environmental Sciences
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 …
The Contribution Of Canopy Samples To Assessments Of Forestry Effects On Native Bees, Joan Milam, Michael Cunningham-Minnick, Henry Patrick Roberts, Christopher Buelow, David I. King
The Contribution Of Canopy Samples To Assessments Of Forestry Effects On Native Bees, Joan Milam, Michael Cunningham-Minnick, Henry Patrick Roberts, Christopher Buelow, David I. King
Environmental Conservation Faculty Publication Series
Forest management is often practiced to enhance conditions for wildlife, including native bees. Evaluations of the effects of forest management on bees have shown that abundance and diversity are higher in newly created early-successional conditions. To date, studies have restricted sampling to the forest understory; however, recent research finds that bee abundance is as high or higher in forest canopies than in understories, suggesting that previous observations of substantially greater bee abundance and diversity in recently managed areas could be an artifact of incomplete sampling of the vertical gradient within forests. To examine the potential implications of sampling biases associated …
First Records Of Perdita Bequaerti (Hymenopertera: Andrenidae) From New England, Justin C. Roch, Deicy Carolina Muñoz Agudelo, Lynn S. Adler, Joan Milam
First Records Of Perdita Bequaerti (Hymenopertera: Andrenidae) From New England, Justin C. Roch, Deicy Carolina Muñoz Agudelo, Lynn S. Adler, Joan Milam
Environmental Conservation Faculty Publication Series
We document the first New England records of the bee Perdita bequaerti Viereck. Perdita bequaerti is a specialist on Asteraceae flowers, especially Helianthus, and is native to much of eastern North America, where it is often associated with predominantly sandy habitats. Previous records indicated P. bequaerti reached the northeastern extent of its range in the state of New York, but in August 2019, during a survey of bees on Helianthus, we collected five specimens of P. bequaerti at two sites in western Massachusetts. Both sites were located on small-scale farms with abundant non-native Helianthus, on soils characteristic …
Validating Morphometrics With Dna Barcoding To Reliably Separate Three Cryptic Species Of Bombus Cresson (Hymenoptera: Apidae), Joan Milam, Dennis E. Johnston, Jeremy C. Anderson, Aliza B. Fassler, Desiree L. Narango, Joseph S. Elkinton
Validating Morphometrics With Dna Barcoding To Reliably Separate Three Cryptic Species Of Bombus Cresson (Hymenoptera: Apidae), Joan Milam, Dennis E. Johnston, Jeremy C. Anderson, Aliza B. Fassler, Desiree L. Narango, Joseph S. Elkinton
Environmental Conservation Faculty Publication Series
Despite their large size and striking markings, the identification of bumble bees (Bombus spp.) is surprisingly difficult. This is particularly true for three North American sympatric species in the subgenus Pyrobombus that are often misidentified: B. sandersoni Franklin, B. vagans Smith B. perplexus Cresson. Traditionally, the identification of these cryptic species was based on observations of differences in hair coloration and pattern and qualitative comparisons of morphological characters including malar length. Unfortunately, these characteristics do not reliably separate these species. We present quantitative morphometric methods to separate these species based on the malar length to width ratio (MRL) and the …
Validating Morphometrics With Dna Barcoding To Reliably Separate Three Cryptic Species Of Bombus Cresson (Hymenoptera: Apidae), Joan Milam, Dennis E. Johnson, Jeremy C. Andersen, Aliza B. Fassler, Desiree L. Narango, Joseph S. Elkinton
Validating Morphometrics With Dna Barcoding To Reliably Separate Three Cryptic Species Of Bombus Cresson (Hymenoptera: Apidae), Joan Milam, Dennis E. Johnson, Jeremy C. Andersen, Aliza B. Fassler, Desiree L. Narango, Joseph S. Elkinton
Environmental Conservation Faculty Publication Series
Despite their large size and striking markings, the identification of bumble bees (Bombus spp.) is surprisingly difficult. This is particularly true for three North American sympatric species in the subgenus Pyrobombus that are often misidentified: B. sandersoni Franklin, B. vagans Smith B. perplexus Cresson. Traditionally, the identification of these cryptic species was based on observations of differences in hair coloration and pattern and qualitative comparisons of morphological characters including malar length. Unfortunately, these characteristics do not reliably separate these species. We present quantitative morphometric methods to separate these species based on the malar length to width ratio (MRL) and the …