This study was carried out to determine the biodiversity and densities of Trichoptera larvae at stations in Kastamonu (Cide)-Sinop (Ayanc?k) coastal region. Benthic macroinvertebrate samples were collected from each 19 using kick-net sampling method with a D-frame net (500-?m mesh). Using data larvae, similarity, diversity, dominance population density relationships among habitats measured. Acc...

The threat of invasion is growing globally and endangers biodiversity. Exotic invasive plants are putting a harm to the vegetation Pakistan’s Pothwar region, which biodiversity hotspot. In current study, effects Broussonetia papyrifera , Parthenium hysterophorus, Xanthium strumarium Lantana camara on local flora in area were examined. Two categorical groups (invaded non-invaded) used dichotomiz...

aim of this research was evaluated and compared of density (number tree per hectare), basal area and volume characteristics for estimation of tree species diversity in degraded forests. in order to, 73 hectares of kouhmian forests was inventory based on random systematic pattern with circular plots (10r and 26 plots). in each plot species, dbh and number of tree were measured and recorded. to e...

Distribution of molluscs in the eastern part of the Persian Gulf were studied during the PG-GOOS cruise (Oct-Nov 2012), using the 250 cm2 Van Veen grab for sampling. Sixty gastropod and 23 bivalve taxa in addition to one scaphopod taxon were identified. Gastropods constituted 80% of molluscs. The abundance of molluscs averaged 1398.36 (±261.95) ind./m2. Costellaria sp. was the most abundant ...

We describe heuristics, based upon information theory and statistics, for ranking the interestingness of summaries generated from databases. The tuples in a summary are unique, and therefore, can be considered to be a population described by some probability distribution. The four interestingness measures presented here are based upon common measures of diversity of a population: variance, the ...

First Published on: 01 August 2007 To cite this Article: Adl, Sina M., Leander, Brian S., Simpson, Alastair G. B., Archibald, John M., Anderson, O. Roger., Bass, David, Bowser, Samuel S., Brugerolle, Guy, Farmer, Mark A., Karpov, Sergey, Kolisko, Martin, Lane, Christopher E., Lodge, Deborah J., Mann, David G., Meisterfeld, Ralf, Mendoza, Leonel, Moestrup, Øjvind, Mozley-Standridge, Sharon E., S...

the effects of land use, crop type and crop management on soil fauna were investigated with survey of four habitats in jajarm. the habitats included rangelands, alfalfa (medicago sativa l.) fields and low-input and high-input of wheat (triticum aestivum l.) fields, each with four sample units. in each sample unit, the macrofauna collected with pitfall traps, sorted and counted in terms of famil...