مرور بر اساس موضوع "Phytoplankton"

در حال نمایش موارد 1 - 20 از 20

  • Changes in size and form in the dominant phytoplankton species in the southern Caspian Sea 

    Makhlough, A.; Nasrollahzadeh Saravi, Hassan; Eslami, F.; Leroy, S.A.G. (Agricultural Research,Education and Extension Organization, 2017-04-01)
    Due to the recent destructive pressures on the Caspian environment, an effect on phytoplankton communities is expected in different aspects such as cell size and form. This paper aims to survey the size and form in the ...

  • Continuous cultures of phytoplankton 

    Baron, Ron; Davie, Alexander; Gaines, Alec; Grant, Darren; Okay, Oya; Ozsoy, Emin (IAU (Tonekabon)- Iran, 2014-09-01)
    The development of cultures of phytoplankton adapting throughout several days in an axenic, continuous-flow chemostat to yield a steady kinetic state of competing species is described mathematically. The adaptation of the ...

  • The cyst-motile stage relationship of three Protoperidinium species from south-east coast of Iran 

    Attaran-Fariman, G.; Khodami, S.; Bolch, C. J. S. (Agricultural Research,Education and Extension Organization, 2011-01-01)
    Resting cyst and motile thecate cell stages of three heterotrophic Protoperidinium oblongum, Protoperidinium sp < b> and Protoperidinium claudicans were assessed. Cysts were isolated from sediment collected from southeast ...

  • Effects of Corbicula fluminea on the nutrient concentration and phytoplankton biomass of tropical reservoirs 

    Chappell, Jessica; Whitmire, Stefanie; Sotomayor-Ramírez, David; Martínez-Rodríguez, Gustavo (IAU (Tonekabon)- Iran, 2019-12-01)
    Invasive bivalves are known to negatively impact aquatic ecosystems across the globe. Previous research has demonstrated invasive bivalves can shift nutrients from the water column to the sediment, harm native bivalves, ...

  • Features of phytoplankton community in the southern Caspian Sea, a decade after the invasion of Mnemiopsis leidyi 

    Nasrollahzadeh Saravi, Hassan; Makhlough, A; Eslami, F; Leroy .Suzanne, A. G (Agricultural Research,Education and Extension Organization, 2014-01-01)
    Phytoplankton study has become more significant in the Caspian Sea due to the occurrence of ecological events such as algal blooms and the introduction of the invader species(Ctenophore, Mnemiopsis leidyi). A seasonal study ...

  • The fluctuations of physicochemical factors and phytoplankton populations of Urmia Lake, Iran 

    Esmaeili Dahesht, L.; Negarestan, H.; Eimanifar, A.; Mohebbi, F.; Ahmadi, R. (Agricultural Research,Education and Extension Organization, 2010-09-01)
    Urmia Lake is one of the two large hypersaline lakes in the world which have Artemia. It is located in northwest of Iran. Due to a decrease in water inflow and volume, the salinity of Urmia Lake has reached to more than ...

  • Inhibition of biofilm bacteria and adherent fungi from marine plankton cultures using an antimicrobial combination 

    Agostini, Vanessa Ochi; Macedo, Alexandre José; Muxagata, Erik (IAU (Tonekabon)- Iran, 2018-06-01)
    The presence of organic matter in plankton cultures will lead to 10- to 1000-fold increases in bacterial density in less than 24 h. The presence of bacteria and fungi can damage cultivated phytoplankton and zooplankton. ...

  • Phytoplankton growth and microzooplankton grazing in the Homa Lagoon (İzmir Bay, Turkey) 

    Kutlu, Banu (Agricultural Research,Education and Extension Organization, 2012-10-01)
    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. ...

  • Phytoplankton of Aras dam reservoir (Iran): an attempt to assess water quality 

    Mohebbi, fereidun; Riahi, H; Sheidai, M; Shariatmadari, Z (Agricultural Research,Education and Extension Organization, 2016-10-01)
    The Aras reservoir, located in the north-west of Iran, plays an important role in fisheries, drinking and agricultural water supplies and recreational activities in the region. This study was performed to characterize the ...

  • Phytoplankton of Aras dam reservoir (Iran): an attempt to assess water quality 

    Mohebbi, fereidun; Riahi, H; Sheidai, M; Shariatmadari, Z (Agricultural Research,Education and Extension Organization, 2016-10-01)
    The Aras reservoir, located in the north-west of Iran, plays an important role in fisheries, drinking and agricultural water supplies and recreational activities in the region. This study was performed to characterize the ...

  • Planktonic-based assessment of the landside-dammed lake (Erzurum-Turkey) 

    FAKIOGLU, Ozden; Kokturk, M; Uzundumlu, A.S; Arslan, H; Atamanalp, M (Agricultural Research,Education and Extension Organization, 2018-07-01)
    The aim of this study was to identify the variation of plankton communities in the Tortum Lake. Changes in phytoplankton and zooplankton communities in relation to the abiotic environment were analyzed using multivariate ...

  • Quantitative (Chlorophyll-a) and qualitative (species composition) seasonal fluctuations of phytoplankton in Lavan coastal waters (North of the Persian Gulf) 

    Rouhani Ghadikolaei, K. (Agricultural Research,Education and Extension Organization, 2001-07-01)
    Phytoplankton species composition as well as amount of Chlorophyll-a and their relation to physico-chemical parameters were studied. The samples were collected monthly from October 1996 until September 1997 in two stations, ...

  • Scale characteristics of the bloom event: A case study in the Iranian coastal waters of the Southern Caspian Sea 

    Makhlough, Asieh; Nasrollahzadeh Saravi, Hassan; Eslami, F; Keyhansani, A.R (Agricultural Research,Education and Extension Organization, 2019-01-01)
    Nutrient enrichment in water and sediments due to excessive anthropogenic activities in recent years has caused excessive algal growth in the Caspian Sea. The current study was conducted to survey the abundance of ...

  • Seasonal and regional distribution of phytoplankton in the southern Caspian Sea 

    Ganjian, A.; Wan Maznah, W. O.; Yahya, K.; Fazli, H.; Vahedi, M.; Roohi, A.; Farabi, S. M. V. (Agricultural Research,Education and Extension Organization, 2010-09-01)
    Seasonal distribution of species composition, cell abundance and biomass of phytoplankton of the Caspian Sea were investigated in 2005. This survey were fulfilled in 6 transects and 26 stations A total of 260 samples were ...

  • Seasonal variability of size-classes of phytoplankton biomass in a sub-tropical embayment, Muscat, Sea of Oman 

    Al-Hashmi, K; Claereboudt, M; Piontkovski, S; Al Azri, A; Amin, S.M.N (Agricultural Research,Education and Extension Organization, 2015-01-01)
    The contribution of three different cell size classes of picoplankton: 0.74-2 μm, nanoplankton:2–20 μm and microplankton, >20 μm of the phytoplankton population and their relationship to environmental conditions were ...

  • شناسائی و بررسی ساختار آبزیان دریاچه شهدای خلیج فارس، چیتگر-تهران 

    باقری, سیامک; Bagheri, Siamak; سبک آرا, جلیل; Sabkara, Jalil; مکارمی, مرضیه; Makaremi, Marziyeh; عباسی, کیوان; Abbasi, Keyvan (دانشگاه علوم دریایی امام خمینی (ره), 2017-08-23)
    در این مطالعه شناسائی و تعیین ترکیب گروههای فیتوپلانکتون، زئوپلانکتون، بنتوز و ماهیان بمنظور حفظ کیفیت آب دریاچه چیتگر بین سالهای 1392 و 1393 انجام گردید. براساس نتایج 35 گروه فیتوپلانکتونی شامل Bacillariophyta (12 ...

  • فلور فیتوپلانکتونی تالاب میانکاله 

    مسعودی, مرتضی; رمضان‌نژاد ‌قادی, رضا; Ramezannejad Ghadi, Rza; ریاحی, حسین; Riahi, Hossein (موسسه تحقیقات جنگلها و مراتع کشورResearch Institute of Forests and Rangelands, 2012-06-21)
    تالاب و شبه‌جزیره میانکاله یکی از ذخایر اصلی زیست‌کره یونسکو در ایران و خاورمیانه است. تنوع فیتوپلانکتونی تالاب میانکاله از مهرماه 88 الی شهریور 89 بررسی شده است. بخشی از کار توسط رمضان‌نژاد قادی انجام گرفته و این دومین ...

  • فلور فیتوپلانکتونی تالاب میانکاله 

    مسعودی, مرتضی; رمضان‌نژاد ‌قادی, رضا; Ramezannejad Ghadi, Rza; ریاحی, حسین; Riahi, Hossein (موسسه تحقیقات جنگلها و مراتع کشورResearch Institute of Forests and Rangelands, 2012-06-21)
    تالاب و شبه‌جزیره میانکاله یکی از ذخایر اصلی زیست‌کره یونسکو در ایران و خاورمیانه است. تنوع فیتوپلانکتونی تالاب میانکاله از مهرماه 88 الی شهریور 89 بررسی شده است. بخشی از کار توسط رمضان‌نژاد قادی انجام گرفته و این دومین ...

  • مروری بر کاربرد و اهمیت جلبک‌ها در علوم شیلاتی و صنایع غذایی 

    خانجانی, محمد حسین; khanjani, mohammad hossein; شریفی نیا, مسلم; Sharifinia, Moslem; علیزاده, مرتضی; alizadehe, Morteza (دانشگاه علوم دریایی امام خمینی (ره), 2019-11-22)
    جلبکها مهمترین تولیدکنندگان اولیه هستند که بطور کلی به دو زیر گروه میکروجلبک (میکروسکوپیک) و ماکروجلبک (ماکروسکوپیک) تقسیم بندی میشوند. جلبکهای دریایی منابع مهمی از ترکیبات فیتوشیمیایی با خواص آنتی اکسیدانی هستند که در ...

  • مطالعه‌ای در مورد دیاتومهای دریاچه‌ها و برکه‌های باغ گیاهشناسی ملی ایران 

    نژاد ستاری, طاهر; شریعتمداری, زینب; Shariatmadari, Z.; جم زاد, زیبا; Jamzad, Ziba (موسسه تحقیقات جنگلها و مراتع کشورResearch Institute of Forests and Rangelands, 2007-07-23)
    در طی این تحقیق دیاتومهای 5 برکه مصنوعی در باغ گیاهشناسی ملی ایران با نمونه برداری از آذر 1382 تا آبان 1383 مورد مطالعه و شناسایی قرار گرفتند. در این مطالعه 68 جنس و گونه متعلق به 18 تیره و 11 راسته از دیاتومها شناسایی ...