نتایج جستجو برای: Phytoplankton

تعداد نتایج: 12345  

Journal: :international journal of environmental research 2011
l.i. kiteresi e.o. okuku s.n. mwangi b. ohowa v.o. wanjeri

phytoplankton communities play a significant role in the oceanic biological pump by forming the base of the trophic structure. increase in nutrients loading affects spatial and temporal distribution of phytoplankton. this study examined the phytoplankton community structure and ecological indices in relation to nutrients dynamics in both estuarine and oceanic areas of ramisi-vanga systems alon...

Journal: :caspian journal of environmental sciences 2014
m. pourafrasyabi z. ramezanpour

phytoplanktons are the first bio- indicators of pollution in aquatic ecosystems. phytoplankton assemblage and aquatic ecosystems are always influenced by environmental factors therefore these environmental changes and threats must be understood in any ecosystem. phytoplankton are inexpensive and readily available bio- indicators. in the present study, phytoplankton were used to study the sefid ...

ژورنال: بوم شناسی آبزیان 2015
Akbarzadeh, Gholamali , Behzadi, Siamak , Darvishi, Mohammad , Salarpouri, Ali ,

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 (...

Journal: :caspian journal of environmental sciences 2014
s. bagheri m. fallahi

phytoplankton taxa composition of the caspian sea were evaluated by using samples collected at 12 stations along the iranian coast of the caspian sea between 1996 and 2010. this study identified 158 phytoplankton species consisted of diatoms (70 species), dinoflagellates (23 species), chlorophytes (29 species), cyanophytes (31 species), and euglenoids (5 species). the dominant species were the ...

 Phytoplankton growth and microzooplankton grazing were investigated at one station in the Homa Lagoon from February to January in 2006-2007. Our results showed significant seasonal variations in phytoplankton dynamics. Microzooplankton was mainly composed of dinoflagellates and tintinnid ciliates and nauplii. Microzooplankton grazing increased with increasing of temperature. Grazing ra...

Abstract: The purpose of this study was to provide a comprehensive checklist on the composition and diversity of phytoplankton in the Sea of Oman and the Persian Gulf from 1979–2019 based on up-to-date, valid and accepted published research records many studies have been conducted on phytoplankton species in the Persian Gulf and the Sea of Oman; however, there is not a comprehensive and complet...

Journal: :international journal of environmental research 0
l.i. kiteresi kenya marine and fisheries research institute, p.o. box 81651, mombasa, kenya e.o. okuku kenya marine and fisheries research institute, p.o. box 81651, mombasa, kenya, 2 soil and water management division, faculty of bioscience engineering, katholike universiteit s.n. mwangi kenya marine and fisheries research institute, p.o. box 81651, mombasa, kenya, university of nairobi, p.o. box 30197, g.p.o, nairobi, kenya b. ohowa kenya marine and fisheries research institute, p.o. box 81651, mombasa, kenya v.o. wanjeri kenya marine and fisheries research institute, p.o. box 81651, mombasa, kenya s. okumu kenya marine and fisheries research institute, p.o. box 81651, mombasa, kenya m. mkono

phytoplankton communities play a significant role in the oceanic biological pump by forming the base of the trophic structure. increase in nutrients loading affects spatial and temporal distribution of phytoplankton. this study examined the phytoplankton community structure and ecological indices in relation to nutrients dynamics in both estuarine and oceanic areas of ramisi-vanga systems along...

Journal: :international journal of environmental research 2010
h. pei q. liu w. hu j. xie

this study was carried out from june to october 2008 in nansi lake. based on the data collected from five sampling stations, phytoplankton taxonomic composition, abundance, temporal variations and spatial distribution were examined. about 94 species, including 48 species of chlorophyta, 22 species of bacillariophyta, and 1 water bloom causative species were identified. average phytoplankton div...

Journal: :شیلات 0
تحسین رحمانی دانشگاه تهران، دانشکده منابع طبیعی، گروه شیلات، کرج صندوق پستی 4314، ایران هادی پورباقر دانشگاه تهران، دانشکده منابع طبیعی، گروه شیلات، کرج صندوق پستی 4314، ایران آرش جوانشیر خوئی دانشگاه تهران، دانشکده منابع طبیعی، گروه شیلات، کرج صندوق پستی 4314، ایران برزان بهرامی کمانگر دانشگاه کردستان، دانشکده منابع طبیعی، گروه شیلات ، سنندج، 416، ایران

assessment of biodiversity and providing phytoplankton checklist of a water body can be used in all subsequent studies. such studies provide information on physical, chemical and biological conditions of aquatic ecosystems. the present study aimed to provide a phytoplankton checklist for the zerebar lake (kurdistan province, iran) and also investigate the distribution of phytoplankton community...

M. Pourafrasyabi Z. Ramezanpour

Phytoplanktons are the first bio- indicators of pollution in aquatic ecosystems. Phytoplankton assemblage and aquatic ecosystems are always influenced by environmental factors therefore these environmental changes and threats must be understood in any ecosystem. Phytoplankton are inexpensive and readily available bio- indicators. In the present study, phytoplankton were used to study the Sefid ...

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