نتایج جستجو برای: helleh estuary

تعداد نتایج: 8471  

Journal: :environmental studies of persian gulf 2015
omidvar farhadian mojtaba pouladi amir vazirizadeh roya sedaghat

the purpose of this study was to investigate the distribution and biodiversity of diatoms during different seasons and their correlation with water quality parameters in helleh river estuary, bushehr, persian gulf. samples were taken in mid-season from summer 2011 to spring 2012 during a one-year period from different stations. results showed that diatoms mostly comprised of bacillariophyceae, ...

Journal: :environmental studies of persian gulf 2014
mojtaba pouladi omidvar farhadian vazirizadeh amir

copepods are the main zooplankton assemblages in most tropical and semi-tropical estuaries. in this research, copepod population dynamics were investigated in helleh river estuary, persian gulf during four seasons beginning from summer 2011 to spring 2012.  samples were taken using plankton net with mesh size of 140 µm and vertical towing from 5 fixed-stations in mid-season. results showed that...

فرهادیان, امیدوار, شرفی, رامین , صداقت, رویا , پولادی , مجتبی ,

Estuaries are one of the most productive aquatic ecosystems that both ecologically and economically are important. The study purposed to investigate the distribution and abundance of phytoplankton from Helleh river estuary (Boushehr- Persian Gulf). Samples were taken in mid-season from summer 2011 to spring 2012 for one year period. Results showed that the dissolved oxygen, temperature, salinit...

The purpose of this study was to investigate the distribution and biodiversity of diatoms during different seasons and their correlation with water quality parameters in Helleh River estuary, Bushehr, Persian Gulf. Samples were taken in mid-season from summer 2011 to spring 2012 during a one-year period from different stations. Results showed that diatoms mostly comprised of Bacillariophyceae, ...

Journal: :iranian journal of animal biosystematics 0
a. teimori h.r. esmaeili a. gholamhosseini

this study was conducted to determine taxonomic and zoogeographic features of fishes from the kor and helleh river basins in southwestern iran. the specimens were collected from 2004 to 2007. twenty four species belonging to 20 genera, 9 families, and 6 orders from the kor river basin and 21 species belonging to 19 genera, 8 families, and 6 orders from helleh basin were identified. ichthyofauna...

Journal: :The European zoological journal 2022

The Mesopotamian spiny eel, Mastacembelus mastacembelus, an endemic freshwater fish restricted to the Euphrates and Tigris river drainages of Mesopotamian, its related taxa in Afrotropica South Asia present suitable elements for studies evolutionary history mastacembelids across these heterogeneous areas. To understand clarify geographic variation eel from Persian Gulf basin, we investigated mo...

Journal: :international journal of aquatic biology 0
somayeh ghasemian department of biology, college of sciences, shiraz university, shiraz, iran. hamid reza esmaeili department of biology, college of sciences, shiraz university, shiraz, iran. mohsen nokhbatolfoghahai department of biology, college of sciences, shiraz university, shiraz, iran. abdolrahim pazira department of fisheries, islamic azad university, bushehr branch, bushehr, iran.

in this study, the morphological and histological studies of male and female gonads in mudskipper, periophthalmus waltoni koumans, 1941 from helleh estuary (bushehr province, southwestern iran) were performed to determine its gonadal development stages and histo-morphological characteristics. sampling was done from april 2010 to march 2011 and a total of 81 individuals were collected by hand ne...

Mojtaba Pouladi Omidvar Farhadian, Vazirizadeh Amir

Copepods are the main zooplankton assemblages in most tropical and semi-tropical estuaries. In this research, copepod population dynamics were investigated in Helleh River estuary, Persian Gulf during four seasons beginning from summer 2011 to spring 2012.  Samples were taken using plankton net with mesh size of 140 µm and vertical towing from 5 fixed-stations in mid-season. Results showed that...

ژورنال: مهندسی دریا 2012
ضیائیان, فاطمه, کرمی خانیکی, علی,

Tidal behavior of esturies is more complicated than open seas. It arises from the effects of geometrical parameters. Also other parameter such as wave reflection from the end of estuaries, sieche, bed friction and coriolis forces cause the water level changes in the esturies to be several times as in the open sea. This paper evalutes the effects of gemetric parameters (such as length, wide and ...

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