El Ticuiz (spring 1)
Basic information
Sample name: El Ticuiz (spring 1)
Reference: J. A. Gómez-Anaya, R. Novelo-Gutiérrez, and A. Ramírez. 2013. Temporal variation in Odonata larval assemblage diversity in a lowland stream in western Mexico. Odonatologica 42(4):309-323 [ER 1097]
Geography
Country: Mexico
State: Michoacán
Coordinate: 18° 40' 24" N, -103° 41' 36" W
Latlng basis: stated in text
Geography comments: "near the seashore... in the municipality of Coahuayana"
Environment
Habitat: tropical/subtropical upland river
Altered habitat: plantation
Substrate: lake bottom/stream bed
MAT: 28.1
WMT: 34.0
CMT: 22.2
MAP: 969.0
Habitat comments: "a tropical climate with the rainy season during summer... Most of the original riparian vegetation has been replaced by banana plantations, and some segments of the water course are frequently altered by dredging. . In the surveyed segment no riffles were observed, only small, shallow runs (Fig. 1b). The substrate was predominantly composed of fine gravel and mud, and the aquatic vegetation was dominated by Eichhornia crassipes (Mart.), Potamogeton sp., Lemna gibba L., Pistia stratiotes (L.), and Typha latifolia L."
Methods
Life forms: odonates
Sampling methods: no design, other nets
Sample size: 669 individuals
Years: 2005
Days: 1
Net or trap nights: 0
Basal area status: not applicable
Sampling comments: "Larval sampling was conducted... using a D-frame aquatic net (0.2mm mesh). A total of 12 samples were taken on each occasion"
Metadata
Sample no: 1611
Contributor no: John Alroy
Enterer: John Alroy
Created: 2015-05-29 19:15:04
Modified: 2016-10-21 04:44:34
Abundance distribution
Each square represents a species. Square sizes are proportional to counts. Values are logged.
Statistics
21 species
12 singletons
total count 669
geometric series index: 60.5
Fisher's α: 4.121
geometric series k: 0.7391
Hurlbert's PIE: 0.532
Shannon's H: 1.1291
Good's u: 0.9821
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