Wetlands all over the world have been lost or are threatened in spite of various international agreements and national policies. This is caused by: (1) the public nature of many wetlands products and services; (2) user externalities imposed on other stakeholders; and (3) policy intervention failures that are due to a lack of consistency among government policies in different areas (economics, e...

Despite wetlands being amongst the Earth's most productive ecosystems, they have been degraded and lost at an unprecedented rate globally, especially throughout the last century. In recognition of the importance of the crucial ecological functions and economic benefits they provide, international efforts, such as the Ramsar Convention, and European Union level efforts, such as the Water Framewo...

Estimation of length at maturation and spawning time and determination of fishing prohibition time and optimum length for catch are of important information about a fish species. Seasonal samplings were conducted over a year to study population dynamic of Carasobarbus luteus in Shadegan wetland. Samples were collected from five sampling stations in Shadegan wetland (Salmane, Rogabe, Khoroosi, M...

The Lake Warden wetland system (LWWS), on the south coast of Western Australia (WA), is a wetland of international importance for waterbirds. It occurs at the bottom of a heavily cleared agricultural catchment. Rising water levels associated with clearing have been identified as a threat to waterbird diversity. Different species of waterbird are typically found in specific ranges of water depth...

according to importance of environmental resource in natural ecosystem preservation and human life, restriction of destruction is necessary. miankaleh wetland in mazandaran province is settlement of animal and herbaceous rare species and due to migration of birds therefore, this research will discuss determination of preservation value in miankaleh international wetland and measure of individua...

ghourighol international wetland which is located at bostan-abad conuty in east azerbaijan province is known as one of the important tourism and promenade zone of iran due to its special natural gravities. therefore, studying tourism value of this place could express the importance of its protection, predicting needs, removing scarcities and the development of tourism. the aim of this research ...