نتایج جستجو برای: phytoplankton composition

تعداد نتایج: 270457  

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...

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...

2012
Itziar Lekunberri Thomas Lefort Cristina Romera-Castillo Clara Cardelús Montserrat Coll-Lladó Clara Ruiz-González Cèlia Marrasé Josep M. Gasol

Bacterial community activity and structure are thought to be directly or indirectly related to phytoplankton development and, in particular, to the phytoplankton species dominating specific algal blooms. To test this hypothesis, we performed a mesocosm experiment designed to generate blooms of different types of phytoplankton through the additions of silicate, urea and phosphorus to oligotrophi...

2016
Carina Bunse Mireia Bertos-Fortis Ingrid Sassenhagen Sirje Sildever Conny Sjöqvist Anna Godhe Susanna Gross Anke Kremp Inga Lips Nina Lundholm Karin Rengefors Josefin Sefbom Jarone Pinhassi Catherine Legrand

In temperate systems, phytoplankton spring blooms deplete inorganic nutrients and are major sources of organic matter for the microbial loop. In response to phytoplankton exudates and environmental factors, heterotrophic microbial communities are highly dynamic and change their abundance and composition both on spatial and temporal scales. Yet, most of our understanding about these processes co...

Journal: :international journal of environmental research 0
v.a. guinder instituto argentino de oceanografía (iado-conicet). camino la carrindanga km 7.5 (8000) bahía blanca, argentina c.a. popovich departamento de biología, bioquímica y farmacia, universidad nacional de sur. san juan 670, (8000) bahía blanca, argentina g.m.e. perillo instituto argentino de oceanografía (iado-conicet). camino la carrindanga km 7.5 (8000) bahía blanca, argentina

under the contemporary scenario of global climate change and increasing coastal eutrophication, baseline studies of phytoplankton diversity and distribution in relation to habitat conditions constitute the first approach to evaluate potential shifts at the base of the food webs. here we present data of phytoplankton species composition and environmental variables in winter 2006 in a temperate e...

2010
Larry E. Brand

My long term goal is to understand the interactions between trace metals and phytoplankton in neritic environments. This interaction is envisioned as a two-way process: Trace metals affect the growth, species composition, and biomass of phytoplankton. In response, phytoplankton adapt to their chemical environment through natural selection by genetically altering their responses to trace metals,...

2010
G. Fahnenstiel S. Pothoven D. Klarer T. Nalepa D. Scavia

Index words: Biomass Cyanobacteria Chlorophytes Cryptophyceae Chrysophyceae Diatoms Phytoplankton abundance, composition, and productivity were monitored on a bi-weekly basis from March/ April throughNovember/December at twooffshore stations in southeastern LakeMichigan in 1983–1987, 1995– 1998 and 2007–2008 (exception 1983–1984 which were sampled from May to August). During the spring isotherm...

Journal: :Frontiers in plant science 2016
Sami J. Taipale Minna Hiltunen Kristiina Vuorio Elina Peltomaa

The composition and abundance of phytoplankton is an important factor defining ecological status of marine and freshwater ecosystems. Chemotaxonomic markers (e.g., pigments and fatty acids) are needed for monitoring changes in a phytoplankton community and to know the nutritional quality of seston for herbivorous zooplankton. Here we investigated the suitability of sterols along with fatty acid...

Journal: :international journal of environmental research 2012
v.a. guinder c.a. popovich g.m.e. perillo

under the contemporary scenario of global climate change and increasing coastal eutrophication, baseline studies of phytoplankton diversity and distribution in relation to habitat conditions constitute the first approach to evaluate potential shifts at the base of the food webs. here we present data of phytoplankton species composition and environmental variables in winter 2006 in a temperate ...

2011
Daniel B. Fishman Sara A. Adlerstein Henry A. Vanderploeg Gary L. Fahnenstiel Donald Scavia Marley Waiser

Index words: Saginaw Bay Phytoplankton Zebra mussels Agglomerative hierarchical clustering Community composition Invasive species The colonization of the zebra mussel (Dreissena polymorpha) in Saginaw Bay dramatically altered the phytoplankton community composition resulting in exclusion of light sensitive species and dominance of species with oligotrophic preferences and light resistance. In 1...

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