Sandrock Cliff (spring)
Basic information
Sample name: Sandrock Cliff (spring)
Reference: A. R. Weisbrod, C. J. Burnett, J. G. Turner, and D. W. Warner. 1993. Migrating birds at a stopover site in the Saint Croix River Valley. Wilson Bulletin 105(2):265-284 [ER 727]
Geography
Country: United States
State: Minnesota
County: Burnett
Coordinate: 46° 48' 30" N, 93° 46' 30" W
Latlng basis: stated in text
Environment
Habitat: temperate broadleaf/mixed forest
Altered habitat: secondary forest
Substrate: ground surface
MAT: 5.5
MAP: 850.0
Habitat comments: "amid abandoned river channels and extensive forest lands logged during the 19th Century... An alder swale, a conifer swamp, an island floodplain forest, a pine barren forest, and an upland hardwood forest [and a sedge fen habitat] were selected as five primary habitats for study"
forest plots ranged in age from 40 to 140 years
MAP regionally ranges from 70 to 100 cm
forest plots ranged in age from 40 to 140 years
MAP regionally ranges from 70 to 100 cm
Methods
Life forms: birds
Sites: 5
Sampling methods: mist nets
Sample size: 4645 individuals
Years: 1985 - 1987
Days: 35
Seasons: spring
Nets or traps: 60
Net or trap nights: 2100
Basal area status: not applicable
Sampling comments: overall sampling effort is 35 days using 12 nets set in each of five plots
net hours are also reported
net hours are also reported
Metadata
Sample no: 1052
Contributor no: John Alroy
Enterer: John Alroy
Created: 2014-08-18 20:41:16
Modified: 2014-08-18 10:48:45
Abundance distribution
Each square represents a species. Square sizes are proportional to counts. Values are logged.
Statistics
97 species
21 singletons
total count 4645
geometric series index: 139.8
Fisher's α: 17.339
geometric series k: 0.9344
Hurlbert's PIE: 0.9548
Shannon's H: 3.5778
Good's u: 0.9955
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