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This is a list of freshwater ecoregions as compiled by the World Wildlife Fund (WWF). The freshwater ecoregion system is similar to that for terrestrial ecoregions.The Earth's land surface is divided into eight terrestrial biogeographic realms or ecozones, which contain hundreds of smaller ecoregions.
This stream operating together with its environment can be thought of as forming a river ecosystem. River ecosystems are flowing waters that drain the landscape, and include the biotic (living) interactions amongst plants, animals and micro-organisms, as well as abiotic (nonliving) physical and chemical interactions of its many parts.
More than 150 major rivers and 50 large lakes are either shared or are situated along the borders of two or more countries. [ 3 ] The Water Convention approaches its issues in a holistic way, equally emphasizing the importance of ecosystems , human societies and economies, [ 4 ] and stressing the integrated water management instead the ...
WWF is a foundation with 65% of funding from individuals and bequests, 17% from government sources (such as the World Bank, DFID, and USAID) and 8% from corporations in 2020. [8] [9] WWF aims to "stop the degradation of the planet's natural environment and to build a future in which humans live in harmony with nature."
The Global 200 is the list of ecoregions identified by the World Wide Fund for Nature (), the global conservation organization, as priorities for conservation.According to WWF, an ecoregion is defined as a "relatively large unit of land or water containing a characteristic set of natural communities that share a large majority of their species dynamics, and environmental conditions".
Rivers are an essential component of the terrestrial realm and have been a preferable location for human settlements during history. River is the main expression used for river channels themselves, riparian zones, floodplains and terraces, adjoining uplands dissected by lower channels and river deltas. [3]
This stream operating together with its environment can be thought of as forming a river ecosystem. River ecosystems are flowing waters that drain the landscape, and include the biotic (living) interactions amongst plants, animals and micro-organisms, as well as abiotic (nonliving) physical and chemical interactions of its many parts.
Rivers and streams drain water that falls on upland areas, and this moving water dissolves pollutants at a faster rate than standing water. [16] However, due to the high production and placement of pollutants in these moving waters, the waters become polluted faster than the pollutant dilution rate, leading to over polluted rivers and streams.
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