نتایج جستجو برای: phytoplankton indices
تعداد نتایج: 95102 فیلتر نتایج به سال:
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...
In the context of understanding and predicting the effects of human-induced environmental change (EC) on biodiversity (BD), and the consequences of BD change for ecosystem functioning (EF), microbial ecologists face the challenge of linking individual level variability in functional traits to larger-scale ecosystem processes. Since lower level BD at genetic, individual, and population levels la...
Plankton is a fundamental part of the waters, especially in coral reef ecosystems. This study aims to determine abundance and diversity plankton species, both phytoplankton, zooplankton waters Gosong Island, Southwest Aceh. research was conducted May 2021. Samples were collected from 4 sampling points with replications. Phytoplankton consists 51 species which are 3 families, namely Cyanophyceae...
This study describes changes in the trophic status of 12 lakes within Suwałki Landscape Park (SLP). All of the trophic classifications of the lakes were based on the trophic continuum division. Trophic status was determined by means of multiparameter indices using several diverse criteria. In this study, the assessment of the trophic status of lakes included water quality; abundance and biomass...
Over the past decade new ecological indices based on phytoplankton and macrophytes were developed as part of the tools for assessment of the ecological status of water bodies. This study demonstrates the applicability of two of them (Assemblage index /Q/ and Algae Group Index /AGI/) for evaluation of water bodies from a lake type L4 as well as their comparability. Assessment of the ecological s...
translation as a comunicative process is always said to be associated with various aspects of meaning loss or gain. subtitling as a mode of translating, due to special discoursal and textual conditions imposed upon it, is believed to be an obvious case of this loss or gain. presenting the spoken sound track of a film in writing and synchronizing the perception of this text by the viewers with...
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...
Variation in monthly values of dry tissue mass (DTM) and two different types of condition indices of the bivalve Egeria radiata (Lamarck, 1804) was studied for 32 consecutive months. To quantify the seasonal trajectory of variation these data were fitted to oneand two-compartment sinusoidal models; and also to a quadratic, cubic and quartic models. The cyclic events in the variation of the T)TM...
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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