Plant diversity and vegetation distribution in an area are related to the soil physical and chemical properties. The knowledge of relationships between species diversityand soil parameteris essential for sustainable ecosystem management. This study was conducted to investigate the relationships between soil factors and species diversity indices in the protected rangelands of Lashgardar, Malayer...

survey on zooplankton composition was studied during june 2015 to march 2016, by selecting six stations along the coastal waters of bushehr (the northwest persian gulf). twenty four zooplankton taxa were identified, and the different zooplankton groups represented twenty-one families. copepoda was recorded with the most abundance (53.30 %) followed by malacostraca (32.87 %), which in turn was f...

fusarium species are cosmopolitan species that frequently isolated from soils and plantdebris and can seriously damaged plant, animal and human. persian gulf beaches in iranare the ideal habitat for a variety of fusarium species. therefore, the study is conductedto gather some information on the population of fusarium species which could be foundin persian gulf beaches in iran. the study involv...

background & aim: lamiaceae is one of the most important families of plants with global transmittal. the family is divided to two major groups: lamioideae and nepetoideae. mentha l. genus has high genetic variation because of different ploidy levels and interspecific interspecific hybridization thus that is possible to select genotypes with excelsior traits as essence content. the genus inc...

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...

One of the main objectives of ecosystem management is to preserve the speciesdiversity. Many researchers regard higher species diversity as the stability of ecologicalsystems. The aim of this study is to investigate the stability and relationships betweentopographical factors with diversity indices in Ghorkhud mountainous rangeland innorthern Khorasan province, Iran. For data sampling (2012), l...