نتایج جستجو برای: richness margalef index
تعداد نتایج: 415206 فیلتر نتایج به سال:
The dictionary construction project at tile Japan Flectronic Dictionary Research Institute, Ltd. (El)R) in Tokyo began in 1986 and is ahnost certainly the largest lexicon construction project for computational purposes it] tile world. This paper describes some aspects of the construction of the English language dictionary, in particular a project to verify and enh,'mce information on noun phras...
Citation: Rull V, Montoya E, Seco I, Cañellas-Boltà N, Giralt S, Margalef O, Pla-Rabes S, D’Andrea W, Bradley R and Sáez A (2018) CLAFS, a Holistic Climatic-Ecological-Anthropogenic Hypothesis on Easter Island’s Deforestation and Cultural Change: Proposals and Testing Prospects. Front. Ecol. Evol. 6:32. doi: 10.3389/fevo.2018.00032 CLAFS, a Holistic Climatic-Ecological-Anthropogenic Hypothesis ...
biodiversity plays a crucial role in stability and productivity of natural ecosystem. the main goal of this research was to classify ecological groups in steppe rangeland and investigate their relationships with plant diversity indices. therefore, fifty different land unit tracts (lut) were identified in khod-neuk basin, yazd province, iran, in 2010. vegetation and soil samples were taken in th...
knowledge about spatial soil variation in terms of measured pedodiversity offers the possibility to estimate the quality and variance within a soil map. diversity indices and abundance distribution models are statistical tools which ecologists have applied for decades for analyzing the intrinsic regularities of various ecological entities. in this study relationships between soils evolution, la...
Absract The diversity and community structure of arthropods in the primitive tobacco ecosystem in the South of Anhui province, China was studied. The investigations were undertaken from April to August 2012. The comparisons were undertaken using a combination of community assessment approaches, including morphospecies richness, the Shannon-Weaver diversity index, H', the Simpson dominance index...
Snow-fed river Pinder -a tributary of river Alaknanda in central Himalaya was explored for fish assemblages and habitat specificity. Altogether 27 fish species were reported from three orders, four families and nine genera. Cypriniformes order was dominating followed by Siluriformes and Salmoniformes. Shannon-Weiner diversity index (3.09 to 4.10) and Simpson index of diversity (0.81 to 0.92) of...
introduction the complexity of natural ecosystem, as the rangelands, is caused to propose the different approaches toevaluatethe ecosystem on the basis of sustainable and systematic management. study on the interaction connectionsbetween plants and biotic and abiotic factors in the rangeland ecosystem can be achieved by relationsofmanagerial strategies in order to conduct the rangeland health. ...
The population status and biomass of earthworms were studied in three different land use systems pasture (Pa), silvopasture (SP), mixed evergreen forest (MEF) from 2019–2020 the Solan district Himachal Pradesh, India. aim this study was to assess investigate how influence their abundance, diversity, biomass. Earthworms soil sampled using Tropical Soil Biology Fertility (TSBF) method all seasons...
Snow-fed River Pinder -a tributary of River Alaknanda in central Himalaya was explored for fish assemblages and habitat specificity. Altogether 27 fish species were reported from three orders, four families and nine genera. Cypriniformes order was dominating followed by Siluriformes and Salmoniformes. Shannon-Weiner diversity index (3.09 to 4.10) and Simpson index of diversity (0.81 to 0.92) of...
The spatial distribution of soil organisms is influenced by the plant cover, thus resulting in a horizontal mosaic of areas subjected to gradients of nutrient availability and microclimatic conditions.This study was conducted to investigate the spatial variability of soil macrofauna in relation to vegetation density in the riparian forest landscape of Karkhe. The vegetation density was determin...
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