نتایج جستجو برای: richness margalef
تعداد نتایج: 20862 فیلتر نتایج به سال:
In the study, International Waterbird Census (IWC) conducted in 2021 wetlands with different habitat characteristics around Dardanelles were evaluated. 3086 individuals belonging to 30 waterbird species counted Kavak Delta, 31 and 1150 Çardak Lagoon, 22 3906 Gökçeada Salt Lake, 11 289 Suvla Lake 8 84 Uzunhızırlı Pond. The highest diversity (Shannon-Wiener Indices, H: 2,473) richness (Margalef I...
The types of plant diversity on the territory Radomyshl Forestry in areas with different forest vegetation conditions were investigated. 21 species belonging to 15 families and 18 genera have been identified. main are determined (Pinus sylvestris-Vaccinium vitisidaea+V. myrtillus-Cladonia spp.+ Pleurozium; Pinus sylvestris-Calluna vulgaris-Pleurozium+ Cladonia ssp.; myrtillus-Pleurozium; sylves...
This study aimed to evaluate the relationship of edaphic fauna under a no-tillage system with different levels soybean productivity [High (NTH), Medium (NTM) and Low (NTL)] in west Santa Catarina (Brazil), identifying which chemical physical variables most affect them, best indicators that can be used. Native forest (NF) areas were used as reference. A total 207 samples soil collected by monoli...
The study of spatial and temporal variability of distribution of phytoplankton communities in Northern part of the Persian Gulf (Qeshm andLengeh Islands) was studied. In this study, five groups (47 genera) of phytoplankton include Bacillariophyceae, Dinophyceae, Cyanophyceae, Crysophyceae and Euglenophyceae were identified. The results showed that Diatoms group (79.6 %) and Rhizosolenia genus (...
Studies on the impacts of fertilization plant production and species diversity are crucial for better maintaining stability grassland ecosystems restoring degraded grasslands. Using a controlled experimental platform in temperate Leymus chinensis meadow steppe ecosystem, effects different levels nitrogen (N) phosphorus (P) addition community structure, biomass allocation, diversity, correlation...
The article evaluates the dependence of most common indices species diversity on sample size and determines their ability to differentiate between different types ecosystems, with a special emphasis discriminating natural anthropogenic ecosystems. An approach adjusting reduce was also proposed. study conducted in seven ecosystems: four were three anthropogenically transformed. Samples soil anim...
This study was undertaken to investigate the role of forest management in tree diversity, regeneration and vegetation in control and managed parcels of series No. 1 of forestry plan in Khalil-Mahale, Behshahr. Thirty samples with an area of 1000 m2 were systematically and randomly taken with a 100 × 75 m grid in both parcels. In each plot, tree number and species type were recorded. In order to...
This paper presents the spatial and temporal variation in diversity of malacofauna relation to water chemistry Aripal stream Kashmir Himalaya. A total 12 species were reported which belong four families, Lymnaeidae, Physidae, Planorbidae, Bithyniidae from class Gastropoda, two Cyrenidae Pisidiidae Bivalvia. The family Planorbidae contributed 34% annual molluscan population followed by Lymnaeida...
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