Query : Caspian Journal of Environmental Sciences

Results 1 - 10 of 17

Journal Article

Journal article

From:
Avano

In order to quantify deep-water exchange in the Caspian Sea, the world's largest inland water body, water samples were analyzed for the transient tracers 3H, 3He, 4He, CFC-11, CFC-12 and atmospheric noble gases. Measurements of temperature, salinity (calculated from conductivity for the ionic composition of Caspian Sea water), and dissolved oxygen were employed to investigate the processes res ...

SUBJECT: deep-water exchange; caspian sea; tritium; chlorofluorocarbon; life sciences

Paper

Written Paper

From:
Library of Antonin Svehla

Sperm motility and sperm production as well as organic and inorganic components present in the seminal plasma were measured at different time periods of spermiation during the spawning season in order to evaluate the semen quality in Salmo trutta caspius. For such evaluation, males were divided into four groups based on the date of spermiation: group A (pre-mature broodstocks), group B and C ( ...

SUBJECT: densidad; espermatozoo; chemicophysical properties; salmo trutta; chlore

POSTED TO: Czech Journal of Animal Science - UZEI (Czech Republic) [1212-1819]

The rational use of fish stocks and increase their productivity is one of the most important and urgent problems of fisheries. One of the important areas in the fishing and for the reproduction of fish on the west coast of the Caspian Sea is the basin of the Terek River. For long period (over 40 years) without the required amount of water and in the absence of improvement measures in reservoir ...

SUBJECT: efficiency; caspian sea; coasts; environmental factors; marine areas

POSTED TO: Russian Journal of Agricultural and Socio-Economic Sciences [2226-1184]

Pesticides are compounds that used by human being, especially farmers for controllingbiotic factors for a long time and bring a lot of environmental problems. Among thesecompounds chlorine insecticide sprays have high half-life, and high lipophilicity characteristic.Due to having chloronic consequences, it is necessary to evaluate and analyze in theenvironment especially in foods and also in f ...

SUBJECT: saltwater fishes; clupeoidei; rutilus; ddt; pesticides

POSTED TO: International Journal of Biology and Biotechnology (Pakistan) [1810-2719]

Sediments as final destination of pollutants in aquatic environments have a significant role in accumulation of toxic residues and other pollutants (especially presistent organic pollutants) in benthic invertebrates and benthos populations or organisms living on benthos and therefore in transferring pollutions to upper levels in food chains. This study was conducted during Summer of 2006 in or ...

SUBJECT: gestion ambiental; protection de l'environnement; control de la contaminacion; residues; proteccion ambiental

POSTED TO: In Animal and Fisheries Sciences [1019-9632]

Pesticides are compounds that used by human being, especially farmers for controllingbiotical factors for a long time and bring a lot of environmental problems. Among thesecompounds clorine insecticide sprays have high half-life, the property of maintaining for along time and high lipophilicity characteristic. Due to having chronic consequences, it isnecessary to evaluate and analysis in envir ...

SUBJECT: saltwater fishes; dieldrin; clupeoidei; rutilus; endosulfan

POSTED TO: International Journal of Biology and Biotechnology (Pakistan) [1810-2719]

Study of tench (Tinca tinca) diet of Lahijan Amirkelayeh wetland

Nezami Balochi, S. A., Lahijan Islamic Azad University et al. [2004]

The diet of Tinca tinca in Lahijan Amirkelayeh Lagoon was in studied in four season of 2001.Fishes were caught by gillnet, common haul science, castnet and dipent. Fishes were biometry, age determ ation، necropsy and intestine contents were recognized after catch. According to obtained results from 178 Amirkelayeh lagoon Tinca tinca 1+ 7 + age groups,average total lenght, weight, relative leng ...

SUBJECT: mycotoxins; contaminantes; iran republique islamique; pollution; micotoxinas

POSTED TO: In Animal and Fisheries Sciences [1019-9632]

Black-striped pipefish Syngnathus abaster Risso, 1827 (Actinopterygii: Syngnathidae) has successfully spread in freshwater ecosystems of Ponto-Caspian basin. Monitoring studies show a steady increase in the number and biomass of pipefish in waters of Dnipro region. It is highly adaptable and breeds in a fresh water. This fact indicates the physiological plasticity of the reproductive system an ...

SUBJECT: zaporizke reservoir; black-striped pipefish; <i>syngnathus abaster</i>; fecundity; embryos

POSTED TO: International Letters of Natural Sciences [2300-9675]

Black-striped pipefish Syngnathus abaster Risso, 1827 (Actinopterygii: Syngnathidae) has successfully spread in freshwater ecosystems of Ponto-Caspian basin. Monitoring studies show a steady increase in the number and biomass of pipefish in waters of Dnipro region. It is highly adaptable and breeds in a fresh water. This fact indicates the physiological plasticity of the reproductive system an ...

SUBJECT: zaporizke reservoir; black-striped pipefish; <i>syngnathus abaster</i>; fecundity; embryos

POSTED TO: International Letters of Natural Sciences [2300-9675]

Black-striped pipefish Syngnathus abaster Risso, 1827 (Actinopterygii: Syngnathidae) has successfully spread in freshwater ecosystems of Ponto-Caspian basin. Monitoring studies show a steady increase in the number and biomass of pipefish in waters of Dnipro region. It is highly adaptable and breeds in a fresh water. This fact indicates the physiological plasticity of the reproductive system an ...

SUBJECT: zaporizke reservoir; black-striped pipefish; <i>syngnathus abaster</i>; fecundity; embryos

POSTED TO: International Letters of Natural Sciences [2300-9675]