نتایج جستجو برای: caspian natural geography
تعداد نتایج: 502854 فیلتر نتایج به سال:
This study evaluated the feasibility of a drowning intervention package in northern Islamic Republic of Iran. A quasi-experimental design used pre- and post-observations among residents and tourists in water-recreation beach areas of intervention and control regions by the Caspian Sea and in residents near the Caspian Sea coastline. The fatal drowning rate in the studied resident population in ...
The trends in the development of hydrocarbons Caspian shelf water area Russian Federation by domestic and foreign companies are analyzed. In accordance with these trends, national-political priorities for formation an oil gas chemical cluster national subjects zone Pre-Caspian substantiated.
Common carp (Cyprinus carpio) is a widespread freshwater fish species of the Cyprinidae family, one largest and most diverse families. The natural habitats C. carpio extend from Western Europe to South-East Asia. has remained an economically important in aquaculture for many centuries its production nowadays exceeds 4 million tons worldwide continues grow. taxonomy complicated, since this usual...
The Ponto-Caspian amphipod Obesogammarus obesus (Sars, 1894) was first recorded in the Rhine River near Koblenz, Germany in October 2004. Additional records of small numbers of O. obesus from the same location in 2005 and 2006 indicate that this alien species may have become established in the central section of the Rhine River. Ship transport via the Main-Danube Canal, connecting the Danube ba...
A total of 48 female spirlins Alburnoides sp. from the Kesselian stream (South Caspian Sea basin, northern Iran) were examined during a period from July 2008 to June 2009 to obtain data on fecundity, and to determine the spawning season of this carp. The mean absolute fecundity of females spirlin was 1722.92 (653.88) eggs. The fecundity has positive correlation with the size of the female. The...
In Drosophila melanogaster, exposure of females to low temperature and shortened photoperiod can induce the expression of reproductive quiescence or diapause. Diapause expression is highly variable within and among natural populations and has significant effects on life-history profiles, including patterns of longevity, fecundity, and stress resistance. We hypothesized that if diapause expressi...
Scale has emerged as a major issue in both ecology and geography in recent decades. Little effort has been made to compare these parallel debates, however, or to seek an integrated conception of scale across the two disciplines. This paper argues that such an integration is possible, even between ecology and human geography – the subfield of geography seemingly most removed from ecological conc...
This document describes a capstone learning exercise designed for undergraduates enrolled in an introductory geospatial tools course. The overarching theme of the exercise, Colorado 14ers, Pixel by Pixel, is mountain geography. While immersed in a digital mountainous landscape, students explore topics of geomorphology and geomorphometry and discover how it is possible for a summit that rises we...
Purpose: to assess measures reduce the canal sedimentation and, accordingly, volume of repair dredging by constructing protective structures, which are proposed be used within boundaries permitted shallow-water dumps protect from bottom soil backbone space and regulate water flow into channel. Materials methods. The Volga-Caspian Sea Navigation Canal (VCSNC) plays role a connecting link single ...
1 Department of Geography, Durham University, Durham DH1 3LE, UK 2 Department of Natural Resources, Cranfield Univ., Cranfield, Bedfordshire MK43 0AL, UK 3 Department of Earth Sciences, Durham University, Durham DH1 3LE, UK Received: 20 May 2008 – Accepted: 21 May 2008 – Published: 6 June 2008 Correspondence to: T. P. Burt ([email protected]) Published by Copernicus Publications on behalf o...
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