Breton Bay
Basic information
Sample name: Breton Bay

Reference: P. H. Graves III and P. J. Ciccotto. 2011. The nymphal odonate fauna of two watersheds in the Lower Potomac River Basin, Maryland, with emphasis on rare taxa. Northeastern Naturalist 18(4):445-456 [ER 1076]
Country: United States
State: Maryland

Coordinate: 38° 18' N, 76° 38' W
Basis of coordinate: based on nearby landmark
Geography comments: "southeast of Washington, DC in the Lower Potomac River basin" (coordinate based on Leonardtown)
Habitat: temperate broadleaf/mixed forest
Substrate: lake bottom/stream bed
Habitat comments: "Pine-hardwood forests cover over half of the area"
Life forms: odonates
Sites: 190
Sampling methods: no design, other nets
Sample size: 898
Years: 2000 - 2010
Sampling comments: "1.86 m2" were sampled in each habitat "using a 540-micron mesh D-net"
Sample: 1588
Contributor: John Alroy
Enterer: John Alroy
Created: 2015-05-23 15:49:11
Modified: 2015-05-23 15:49:11
Abundance distribution
35 species
6 singletons
total count 898
extrapolated richness: 42.8
Fisher's α: 7.251
geometric series k: 0.8503
Hurlbert's PIE: 0.8573
Shannon's H: 2.4535
Good's u: 0.9933
Each square represents a species. Square sizes are proportional to counts.