نتایج جستجو برای: river basins

تعداد نتایج: 92307  

Journal: :Genetics and molecular research : GMR 2015
R S Panarari-Antunes A J Prioli S M A P Prioli H F Júlio A V Oliveira C S Agostinho J P Silva Filho L M Prioli

The genetic diversity of invasive and native populations of Plagioscion squamosissimus (Heckel, 1840) from the Paraná, Parnaiba and Araguaia-Tocantins river basins was assessed by using Random Amplified Polymorphic DNA (RAPD) markers. Genetic data confirmed the hypothesis of low genetic variability within and among P. squamosissimus populations introduced in the upper Paraná River basin, and in...

Journal: :Brazilian journal of biology = Revista brasleira de biologia 2007
D M Garcia M Marmontel F W Rosas F R Santos

The giant otter (Pteronura brasiliensis) is an aquatic mammal of the Mustelidae family, endemic to South America. Its original distribution corresponds to the region from the Guyanas to Central-North Argentina, but it is extinct or on the verge of extinction in most of its historical range. Currently, the species is considered endangered by the World Conservation Union (IUCN). Based on its geog...

2015
Alícia Navarro-Ortega Vicenç Acuña Alberto Bellin Peter Burek Giorgio Cassiani Redouane Choukr-Allah Sylvain Dolédec Arturo Elosegi Federico Ferrari Antoni Ginebreda Peter Grathwohl Colin Jones Philippe Ker Rault Kasper Kok Phoebe Koundouri Ralf Peter Ludwig Ralf Merz Radmila Milacic Isabel Muñoz Grigory Nikulin Claudio Paniconi Momir Paunović Mira Petrovic Laia Sabater Sergi Sabaterb Nikolaos Th. Skoulikidis Adriaan Slob Georg Teutsch Nikolaos Voulvoulis Damià Barceló

Water scarcity is a serious environmental problem in many European regions, and will likely increase in the near future as a consequence of increased abstraction and climate change. Water scarcity exacerbates the effects of multiple stressors, and thus results in decreased water quality. It impacts river ecosystems, threatens the services they provide, and it will force managers and policy-make...

2017
Mengqian Lu Xiaotian Hao

Three river basins, i.e., the Yangtze river, the Mississippi river and the Loire river, were presented as case studies to explore the association among atmospheric circulations, moisture exports and extreme precipitations in the mid-latitudes. The major moisture source regions in the tropics for the three river basins are first identified using the Tropical Moisture Exports (TMEs) dataset. The ...

2013
Yves Souchon

Received 07 May 2012 Accepted 12 December 2012 Abstract The well-documented re-colonisation of the French large river basins of Loire and Rhone by European otter and beaver allowed the analysis of explanatory factors and threats to species movement in the river corridor. To what extent anthropogenic disturbance of the riparian zone influences the corridor functioning is a central question in th...

Most of our country is located in arid and semiarid climate which have high soil erosion and sediment production, therefore, the study of soil erosion and sediment yield and also evaluation of the effective factors on sediment production are very important in proper management of a watershed. The aim of present study is the efficiency evaluation of MUSLE model in sediment estimation in the stor...

2008
Changbo Qin Yangwen Jia Z.(Bob) Su Zuhao Zhou Yaqin Qiu Shen Suhui

This paper investigates whether remote sensing evapotranspiration estimates can be integrated by means of data assimilation into a distributed hydrological model for improving the predictions of spatial water distribution over a large river basin with an area of 317,800 km2. A series of available MODIS satellite images over the Haihe River basin in China are used for the year 2005. Evapotranspi...

2004
Jaswinder Singh H. Vernon

Watershed scale hydrologic simulation models HSPF (Hydrologic Simulation Program – FORTRAN) and SWAT (Soil and Water Assessment Tool) were used to model the hydrology of the 2150 square mile Iroquois River watershed (IRW) located in the east central Illinois. Both models are part of the BASINS modeling system that facilitates preand post-processing of data, as well as data input to the models u...

2014

Abstract Introduction Carriage of cargo on the river vessels is the most convenient and cost-effective mode of transport in countries with a developed system of navigable rivers and canals. The North river basin is one of the largest in extent and difficult navigation conditions on the territory of the Russian Federation. It covers the basins of major rivers of the Northern Dvina, Pechora, Meze...

2017
Taise M. Lopes Dayani Bailly Bia A. Almeida Natália C. L. Santos Barbara C. G. Gimenez Guilherme O. Landgraf Paulo C. L. Sales Matheus S. Lima-Ribeiro Fernanda A. S. Cassemiro Thiago F. Rangel José A. F. Diniz-Filho Angelo A. Agostinho Luiz C. Gomes

Climate change and species invasions interact in nature, disrupting biological communities. Based on this knowledge, we simultaneously assessed the effects of climate change on the native distribution of the Amazonian fish Colossoma macropomum as well as on its invasiveness across river basins of South America, using ecological niche modeling. We used six niche models within the ensemble foreca...

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