This will translate this blog to speech.

A blog that will gradually post the results of a study of the bees found by refuge biologists and volunteers using bee bowls traps on USFWS Region 5 National Wildlife Refuges in the Northeastern United States.

Friday, February 20, 2009

Rachel Carson National Wildlife Refuge

This is a summary of bee data from 4 fields from the Rachel Carson National Wildlife Refuge collected in August 2008. Each field was sampled with 5 fluorescent yellow, 5 fluorescent blue, and 5 white 3.25 ounce bowl traps.

A complete table of the data is available from Leo Shapiro (lshapiro@umd.edu), Sam Droege (sdroege@usgs.gov), or the refuge biologist.

Below is a table of the site numbers and a brief site description followed by a table of results.

5583 RCNWR-Spurwink Div. Site 1
5584 RCNWR-Spurwink Div. Site 2
5585 RCNWR-Spurwink Div. Site 3
5586 RCNWR-Spurwink Div. Site 4

Refuge Site Locations

Table of results

Species 5583 5584 5585 5586 Grand Total
Augochlorella aurata 1

1 2
Bombus fervidus 1

Bombus fervidus/pensylvanicus

Bombus impatiens

3 3
Ceratina calcarata 2 1

Ceratina dupla 1

Halictus confusus

1 1 2
Hoplitis producta

Hylaeus affinis/modestus
1 3 1 5
Hylaeus mesillae 1

Lasioglossum coriaceum

Lasioglossum cressonii 1

Lasioglossum planatum

1 1
Lasioglossum quebecense

Lasioglossum rohweri 1

1 2
Megachile brevis 1

Melissodes desponsa

1 1
Melissodes druriella 1

Sphecodes sp. 1 4 1
Grand Total 11 11 5 9 36

While having one of the lowest total number of bees captured, this refuge's fields were quite species rich. Note that most species were detected with only 1 or 2 individuals, indicating that there are likely to be many more species on the refuge that were not detected. No particular species stands out; despite the northern latitude, all these species could be found in the southern part of the region. The relatively large number of the nest parasite Sphecodes is interesting. We have a difficult time determining species in this group but all appeared to be the same species and will be sent off to have their DNA squeezed.

Sam and Leo

To those who have not yet learned the secret of true happiness,

begin now to study the little things in your own door yard.

-George Washington Carver

Pictures of the surveyed fields

Field 1

Field 2

Field 3

Field 4

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With Natural History there is no need to go to the moon or Madagascar; there is more to find in your woodlot than in our entire solar system.