نتایج جستجو برای: fresh

تعداد نتایج: 57239  

Journal: :desert 2013
gh.r. zehtabian m.k. kianian a. salehpour jam

playas are low-lands which is considered to be the locations of accumulation of superficial and ground waters fromhigher elevations and these waters have different types of salts and various salinity level. therefore, because of lack ofrainfall and fresh-water both for human and animal useage or even for plants, it is needed to apply proper methods toharvest fresh water from these saline-waters...

Journal: :Trends in ecology & evolution 1999
C E Lee M A Bell

Transitions from marine to freshwater habitats constitute dramatic shifts between 'adaptive zones' that have initiated the radiation and speciation of many taxa. As recently as 10?000 years ago, deglaciation resulted in marine fauna being trapped in freshwater lakes. In modern times, human activity has caused the acceleration of freshwater invasions from marine or brackish habitats, leading to ...

2012
Maria del Mar Alguacil Emma Torrecillas Pilar Torres Fuensanta García-Orenes Antonio Roldán

The effects of irrigation with treated urban wastewater (WW) on the arbuscular mycorrhizal fungi (AMF) diversity and soil microbial activities were assayed on a long-term basis in a semiarid orange-tree orchard. After 43 years, the soil irrigated with fresh water (FW) had higher AMF diversity than soils irrigated with WW. Microbial activities were significantly higher in the soils irrigated wit...

2006
Willem P. Sijp Matthew H. England

We show that a reduction in vertical mixing applied inside the Atlantic basin can drastically increase North Antlantic Deep Water (NADW) stability with respect to fresh water perturbations applied to the North Atlantic. This is contrary to the notion that the stability of the ocean’s thermohaline circulation simply scales with vertical mixing rates. An Antarctic Intermediate Water (AAIW) revers...

2017
Carmen Pedroza-Gutiérrez Juan M Hernández

Fish consumption in Mexico is considered low (around 12 kg per person per year) and non-homogeneously distributed across the country. One of the reasons for this situation is the scarcity of wholesale selling sites. In this context, the Mercado del Mar (MM), located in Guadalajara city, Jalisco, is the second biggest wholesale fish market in Mexico, with a distribution of about 500 tons per day...

Journal: :The Journal of experimental biology 1984
D H Evans

form (Evans, 1980).

2012
Arjen Y. Hoekstra Mesfin M. Mekonnen Ashok K. Chapagain Ruth E. Mathews Brian D. Richter

Freshwater scarcity is a growing concern, placing considerable importance on the accuracy of indicators used to characterize and map water scarcity worldwide. We improve upon past efforts by using estimates of blue water footprints (consumptive use of ground- and surface water flows) rather than water withdrawals, accounting for the flows needed to sustain critical ecological functions and by c...

Journal: :Journal of environmental biology 2010
Idris Ogurlu Ebubekir Gundogdu Ismet Ceyhun Yildirim

This study has been conducted between years 2002-2008 in nearby Egirdir lake, which is acknowledged to be amongst the biggest fresh water lakes in Turkey. Within the scope of this study observations have been made on one of the cat species common in Turkey, Jungle Cat Felis chaus, its biology distribution, population size, behavior and food in their habitat as well as problems conceming its con...

Journal: :Science 1999
E Ostrom J Burger C B Field R B Norgaard D Policansky

In a seminal paper, Garrett Hardin argued in 1968 that users of a commons are caught in an inevitable process that leads to the destruction of the resources on which they depend. This article discusses new insights about such problems and the conditions most likely to favor sustainable uses of common-pool resources. Some of the most difficult challenges concern the management of large-scale res...

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