Aquatic ecoregions were increasingly used as spatial units for aquatic ecosystem management at the watershed scale. In this paper, the principle of including land area, comprehensiveness and dominance, conjugation and hierarchy were selected as regionalizing principles. Elevation and drainage density were selected as the regionalizing indicators for the delineation of level I aquatic ecoregions...

The regular assessment of faunal diversity near the energy power plant has gained interest many researchers. activity and effluent discharged from have remarkably stressed adjacent assemblage alpha biotic community surrounding plant. Hence, this study aimed to assess fishes benthos in bordering areas Tanjung Kidurong Combined Cycle Power Plant (TKCCP), Bintulu Sarawak. investigation was conduct...

biodiversity refers to all forms of living animals, plants and microorganisms and agro-biodiversity is a component of biodiversity that represents diversity in arable lands. the aim of this study was to determine the biodiversity status of agro-ecosystems of shahr-e-rey city located in south of tehran, through calculating species richness index using rarefaction method. to the collect required ...

Little attention has been devoted to lichens of Kerman province (Iran). This study was conducted to identify lichens in the Kuh-Asiab protected area of Kubanan located in the northernmost part of Kerman province. In this study, eight sites were chosen in the area. Sampling was carried out according to Random method. Height data were obtained from each site along with the abundance of lichen spe...

Studies on echinoderms along the Panamanian Pacific coast have focused mainly on evolutionary and molecular analyses, however little ecological research has been done and mainly only on 2 species: Diadema mexicanum and Acanthaster planci. Herein, we describe for the first time the diversity (based on Margalef, Shannon and Pielou indices), distribution and density of echinoderms for some islands...

Patterns of species diversity and community structure of insects associated with fruits of domesticated cucurbits were investigated from January 2009 to 2011 in three localities from two agroecological zones in the southern part of Cameroon. Rarefaction curves combined with nonparametric estimators of species richness were used to extrapolate species richness beyond our own data. Sampling effor...

This study aimed to compare the diversity of birds between protected and non–protected areas that are similar in climatic geographical features. The was carried out three different habitat types (Forest, Agricultural land Wetland Sundarijal Non-protected Changunarayan. Field data were collected using a “Point Count Approach” transects which laid & Wetland). Shannon-Wiener Margalef Diversity...

in order to investigate variations in plant diversity in dr. dorostkar's forest reservoir, located in gisoum talesh, 44 sampling plots were applied by the randomized-systematic method. the diameter of all tree species (dbh?5 cm) was measured in 400 m2 (20×20 m) square sampling plots. in addition, the number of individuals of shrubs and saplings (dbh?5 cm) were enumerated in circular 100 m2...

Species diversity is a crucial index used to evaluate the stability and complexity of forest ecosystems. Studying relationship between stand structure understory herbaceous plants species useful for managers formulate best optimization method with goal improving diversity. In this research, Platycladus orientalis plantations in Beijing were taken as research object. Pearson’s correlation analys...