نتایج جستجو برای: salinity indicator

تعداد نتایج: 99461  

Journal: :IEEE Trans. Geoscience and Remote Sensing 2002
Adriano Camps Jordi Font Jacqueline Etcheto Vicente Caselles Alain Weill Ignasi Corbella Mercè Vall-Llossera Nuria Duffo Francesc Torres Ramon Villarino Luis Enrique Agusti Julia Carolina Gabarro Jacqueline Boutin Eva Rubio Steven C. Reising Patrick Wursteisen Michael Berger Manuel Martín-Neira

—Sea surface salinity can be measured by passive microwave remote sensing at L-band. In May 1999, the European Space Agency (ESA) selected the Soil Moisture and Ocean Salinity (SMOS) Earth Explorer Opportunity Mission to provide global coverage of soil moisture and ocean salinity. To determine the effect of wind on the sea surface emissivity, ESA sponsored the Wind and Salinity Experiment (WISE...

Journal: :Bioresource technology 2007
A Ranga Rao C Dayananda R Sarada T R Shamala G A Ravishankar

Growth of Botryococcus braunii (race 'A') and production of its constituents viz, hydrocarbon, carbohydrate, fatty acid, and carotenoids were influenced by different levels of salinity. Under salinity at 34 mM and 85 mM, 1.7-2.25-fold increase in the relative proportion of palmitic acid and two fold increase in oleic acid were observed. A twofold increase in carotenoid content was noticed at 85...

2017
Xiaoyan Zhang Haishen Wen Hailiang Wang Yuanyuan Ren Ji Zhao Yun Li

Salinity is one of the most prominent abiotic factors, which greatly influence reproduction, development, growth, physiological and metabolic activities of fishes. Spotted sea bass (Lateolabrax maculatus), as a euryhaline marine teleost, has extraordinary ability to deal with a wide range of salinity changes. However, this species is devoid of genomic resources, and no study has been conducted ...

2012
Ahmad Bybordi

Salinity is a phenomenon challenging the plantation and growth of grape in arid and semiarid regions. During the present research, tolerance of two grape cultivars (Soltanin and Fakhri) was evaluated against various sodium chloride salinity levels (zero, 50, 100, 150, 200 and 250 mM), which was conducted based on factorial experiment in the form of Randomized Complete Design (RCD) with three re...

2015
Justin George

Hyperspectral remote sensing is widely used for analyzing and estimating the severity of soil salinity in arid and semi-arid regions, throughout the world. The present study is an attempt to map the various soil salinity severity classes using different hyperspectral indices generated using EO-1 Hyperion data and Support Vector Machine (SVM) method, in the Mathura region of Indo-Gangetic plain ...

2005
Van Dijk M. Gilfedder J. Gallant

Native vegetation clearing has created salinity problems in many parts of Australia. Reforestation has the potential to reduce salinity, but also reduces stream flow and this is a cause of concern. Spatial predictions of the stream flow and salinity impacts of reforestation are needed to assess the ability to achieve salinity and water resource targets. Unfortunately, our ability to predict sal...

Journal: :Journal of phycology 2013
Suzanne L Strom Elizabeth L Harvey Kerri A Fredrickson Susanne Menden-Deuer

The ability of harmful algal species to form dense, nearly monospecific blooms remains an ecological and evolutionary puzzle. We hypothesized that predation interacts with estuarine salinity gradients to promote blooms of Heterosigma akashiwo (Y. Hada) Y. Hada ex Y. Hara et M. Chihara, a cosmopolitan toxic raphidophyte. Specifically, H. akashiwo's broad salinity tolerance appears to provide a r...

Journal: :ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences 2021

Abstract. Soil salinity, a significant environmental indicator, is considered one of the leading causes land degradation, especially in arid and semi-arid regions. In many cases, this major threat leads to loss arable land, reduces crop productivity, groundwater resources loss, increases economic costs for soil management, ultimately probability erosion. Monitoring salinity distribution degree ...

2017
A. El-Battay A. Bannari N. A. Hameid A. A. Abahussain

Salt-affected soils, caused by natural or human activities, are a common environmental hazard in semi-arid and arid landscapes. Excess salts in soils affect plant growth and production, soil and water quality and, therefore, increase soil erosion and land degradation. This research investigates the performance of five different semi-empirical predictive models for soil salinity spatial distribu...

2016
Zachary T. Aanderud Joshua C. Vert Jay T. Lennon Tylan W. Magnusson Donald P. Breakwell Alan R. Harker

Bacteria employ a diverse array of strategies to survive under extreme environmental conditions but maintaining these adaptations comes at an energetic cost. If energy reserves drop too low, extremophiles may enter a dormant state to persist. We estimated bacterial dormancy and identified the environmental variables influencing our activity proxy in 10 hypersaline and freshwater lakes across th...

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