نتایج جستجو برای: 16 orders and 53 families
تعداد نتایج: 16899781 فیلتر نتایج به سال:
during 2010-2011 a faunistic survey was carried out for collection and identification of edaphic mesostigmatic mites (acari: mesostigmata) in jiroft and suburb. mites were extracted from soil samples by berlese funnel. the mites were cleared in nesbit fluid and were mounted in hoyer medium on microscopic slides. in this study 43 spices from 26 genera and 16 families were collected and identifie...
Shipping is among the most important ways to transfer the non-native species. In the present study, the transferability of the plankton species by the ballast water of 10 ships entering the Bushehr Port in the Persian Gulf has been investigated. The values of physicochemical parameters measured in the ballast waters showed that the average temperature, pH, salinity and TOC, were 26.2 0C, 8.17, ...
this study aims to investigate value conflicts between mothers and their daughters among families and influential factors on this conflict in yazd city. this study adopted a survey method and a questionnaire was used that its validity through construct validity (factor analysis) and its reliability by cronbach alpha were measured. the population of this study consists of all yazdian families th...
Considering fundamental changes in the classification of angiosperms, based on phylogenetic studies, makes revising and updating Floras inevitable. Hence, in this paper, changes in the flora of Afghanistan have been listed and compared with the flora of Iran. As the latest studies indicate, according to APG IV system, the flora of Afghanistan comp-rises 40 orders, 130 families, about 1030 gener...
the “kuh-e-gorm” non-hunting area is located in the northwest of jahrom city, fars province, iran. since there is no adequate knowledge on fauna of this region, a survey was conducted on the vertebrate fauna of the region from april 2007 to april 2008. in total, 124 vertebrate species were identified including: 11 fishes (belong to 10 genera, four families and three orders), four amphibians (be...
The spatial and temporal variation patterns of birds were investigated in the Oasis ecosystem North Algeria Sahara. This contribution aimed to investigate poorly studied bird fauna Bousaâda oasis. direct observation method was used for counts, adopted only during breeding period. A total 53 species from 29 families 16 orders assessed different habitats (palm, fruit trees and, cultivated crops)....
this research was conducted in two protect and destroy region in the middle zagros, in illam province. in order to identification of ecological species group and evaluate density of regeneration, effect of many factors such as protection, vegetation, physiographic factors, physical and chemical properties of soil in study locations were studied. to achieve these purpose number of 54 plots using...
in this thesis our aim is to construct vector field in r3 for which the corresponding one-dimensional maps have certain discontinuities. two kinds of vector fields are considered, the first the lorenz vector field, and the second originally introced here. the latter have chaotic behavior and motivate a class of one-parameter families of maps which have positive lyapunov exponents for an open in...
today, the route for economic development in most countries is the same as international open competitive economy. economic institutes well known that supportive public economy belonged on the past and they may compete in the global economy. it is obvious that if they have no competitive potency or not familiar with competition technique, they may be devastated. banking system aims to collect t...
this study was conducted to determine taxonomic feature of fishes from the headwaters of three riverine systems in kohgiluyeh and boyer-ahmad province (k & b) in southwestern iran during 2011 to 2013. fifteen species belonging to 4 families, and 3 orders from the karun river system, 10 species belonging to 4 families and 3 orders from the zohreh river system and 8 species belonging to 2 fam...
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