Results 61 to 70 of about 698 (158)

The state of benthic and planktonic invasive species in adjacent to St. Petersburg waters of the Gulf of Finland in 2018 as against the data for 2014

open access: yesТрансформация экосистем
In 2018, a total of 45–57 zooplankton and 23–81 benthos taxa, as well as 0–6 alien zooplankton and 3–7 invasive zoobenthos species were found in different parts of the water area of the Gulf of Finland adjacent to St. Petersburg.
A. A. Filippov   +3 more
doaj   +1 more source

CHANGES IN TRANSPARENCY OF WATER AND REDUCTION OF BIOMASS OF BENTHIC COMMUNITIES DUE TO THE DAMAGE TO THE BANKS AND THE OVERALL POLLUTION IN WESTERN PART OF THE SOUTH CASPIAN SEA

open access: yesЮг России: экология, развитие, 2015
Aim. As a result of fluctuations in water level, waves, circulation, rise and fall of the water levels there are constant partial erosion and leaching of soil banks in water bodies, with intensive ongoing pollution of the waters of the Caspian Sea, which
M. A. Salmanov   +2 more
doaj   +1 more source

ASSESSMENT OF ENVIRONMENTAL STATE OF WATERCOURSES OF DELTA OF THE VOLGA RIVER BY THE STRUCTURE OF BOTTOM COMMUNITIES

open access: yesЮг России: экология, развитие, 2014
Aim. The assessment of the ecological status of watercourses of Delta of the Volga River on the structure of benthic communities. The main objective of our researches was the assess the ecological status of watercourses of Delta of the Volga River on the
V. F. Zaitcev, O. G. Tarasova
doaj   +1 more source

Features of Zoobenthos Long-Term Dynamics in Regulated Area of Ob River [PDF]

open access: yesЖурнал Сибирского федерального университета: Серия Биология, 2016
The abundance, biomass and taxonomic structure of dominant zoobenthos species in Novosibirsk reservoir have been analyzed for the entire period of the reservoir existence.
Liubov V. Yanygina
doaj  

EXPERIENCE OF THE USE OF BREWER᾽S GRAINS FOR FERTILIZFTION OF FISH PONDS

open access: yesRibogospodarsʹka Nauka Ukraïni, 2013
Purpose. To investigate the effect of brewer᾽s grains on formation of hydrochemical regime, development of natural forage base, and fish productivity in nursery ponds. Methodology.
T. Grygorenko
doaj   +1 more source

BIODIVERSITY OF ZOOBENTHOS AT THE CA RIVER, VIETNAM [PDF]

open access: yesMarine Research in Indonesia, 2008
A research on zoobenthos biodiversity was carried out from September 2004 to September 2006 at the Ca river (the length of Nghe An and Ha Tinh provinces) showed a species composition consisted of 154 species, 115 genera, 72 families, 32 orders and 5 phyla, including Mollusca, Annelida, Arthropoda, Echinodermata and Sipuncula.
openaire   +1 more source

Biodiversity, the present ecological state of the Aral Sea and its impact on future development

open access: yesActa Biologica Slovenica, 2015
The Aral sea used to be the fourth largest lake in the world. Its catchment area is huge, two main rivers (Amu Darya and Syr Darya) feed the lake. The balance of hydrological regime changed drastically after 1960 due to regulation of both main rivers ...
Mihael J. Toman   +4 more
doaj   +1 more source

Tropical Asian Streams

open access: yes, 1999
Confounding effects of environmental variability in streams ...
openaire   +3 more sources

Zoobenthos in the Xhimojay Dam, State of Mexico

open access: yesAmerican Journal of Life Sciences, 2015
Monthly samplings were carried out during 2013 in the Xhimojay dam, Jilotepec, Estado de Mexico with the objective of determine changes in the composition and abundance of zoobenthos throughout time and its relationship with environmental conditions of their habitat. The organisms were collected performing trawls 1 m2.
openaire   +1 more source

Geozoological characteristics of the ichthyofauna of the water bodies of the Kuban river basin (based on the materials of the Karachay-Cherkess Republic)

open access: yesНаука. Инновации. Технологии
The article studies geozoological characteristics of the mountain rivers of the Kuban River basin within the borders of the KarachayCherkess Republic. The water availability of the Karachay-Cherkess Republic stands out from other southern regions of the ...
A. Z. Kerefov   +2 more
doaj   +1 more source

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