Earth Science Cluster: Recent submissions
Now showing items 121-140 of 204
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Screening Of Some Qatari Plant Extracts For Anti Fungal Activities Of Plant Pathogenic Fungi
( Hamad bin Khalifa University Press (HBKU Press) , 2014 , Conference Paper)The present study aimed to evaluate the antifungal activity of three desert plants extracts grown naturally in Qatar: (Al-rayhan) Ocimum basilicum, Shafallah (Capparis spinosa) and Qwaif(Prosopis juliflora)to study their ... -
Chemical Characterization and Source Identification of Beached Oil from Two Areas Along the North-Western Coast of Qatar
( Hamad bin Khalifa University Press (HBKU Press) , 2016 , Conference Paper)Over the years there have been several reports of oil spills affecting particularly the northern coast of Qatar. In most cases, the source of oil spills is not identified. The spilled oils are very resistant to degradation ... -
Enhancement in bell pepper (Capsicum annuum l.) plants with application of roholtiella sp. (nostocales) under soilless cultivation
( MDPI , 2021 , Article)Cyanobacteria are found to be renewable and sustainable additives for growth improvement in crops. Extracts and biomass of three nitrogen-fixing cyanobacteria namely, Roholtiella sp. (QUCCCM97), Nostoc ellipsosporum ... -
Environmental impacts of using municipal biosolids on soil, plant and groundwater qualities
( MDPI , 2021 , Article)This study was conducted to evaluate the effect of three different rates of municipal biosolids produced in Qatar on plant characteristics and soil texture and its potential impacts on groundwater. Petunia atkinsiana, was ... -
Investigating the quality and efficiency of biosolid produced in qatar as a fertilizer in tomato production
( MDPI , 2021 , Article)This study evaluated biosolid quality over time and the efficiency of using amounts (5 and 7 kg/m2) of municipal class A biosolids in Qatar to fertilize tomato plants (Solanum lycopersicum). Random samples were subjected ... -
History of a disaster: A baseline assessment of the Wakashio oil spill on the coast of Mauritius, Indian Ocean
( Elsevier , 2022 , Article)Oil spills from tanker ships provide adverse and irreversible impacts of a pollutant over coastal and marine environments. Using Sentinel-1 and 2 satellite images, this baseline paper presents the detection, assessment, ... -
Application of Cyanobacteria ( sp.) Liquid Extract for the Alleviation of Salt Stress in Bell Pepper ( L.) Plants Grown in a Soilless System.
( MDPI , 2021 , Article)Salinity is one of the abiotic stresses that affect crop growth and productivity in arid and semi-arid regions. Unfortunately, there are few known methods to mitigate the deleterious impacts of salt stress on the development ... -
Hydropriming with moringa leaf extract mitigates salt stress in wheat seedlings
( MDPI , 2021 , Article)Salinity is the major constraint that decreases the yield and production of crops. Wheat has a significant value in agricultural food commodities. The germination and growth of wheat seedlings are a big challenge in ... -
Determination of total flavonoid content by aluminum chloride assay: A critical evaluation
( Elsevier , 2021 , Article)Flavonoids are important natural bioactive compounds. Quantitation of total flavonoid content (TFC) is widely performed using the aluminum chloride colorimetric assay against a flavonoid standard assuming equal responses ... -
Severe vegetation degradation associated with different disturbance types in a poorly managed urban recreation destination in Iran
( Springer Nature , 2021 , Article)Recreational activities worldwide have major impacts on the environment. This study examined the impact of different kinds of recreational activities on plant communities in a highly visited park in Mashhad, Iran. Vegetation ... -
Changes in plant composition and diversity in an alpine heath and meadow after 18 years of experimental warming
( Springer , 2021 , Article)Global warming is expected to have large impacts on high alpine and Arctic ecosystems in the future. Here we report effects of 18 years of experimental warming on two contrasting high alpine plant communities in subarctic ... -
Diversity of arbuscular mycorrhizal fungi and its chemical drivers across dryland habitats
( Springer , 2021 , Article)Qatar is largely characterized by a hyper-arid climate and low soil fertility which create a stressful soil environment for arbuscular mycorrhizal (AM) fungi. In a study of AM fungal communities and their relationship with ... -
Litter decomposition above the treeline in alpine regions: A mini review
( Elsevier , 2021 , Article)Litter decomposition is a key driver of ecosystem processes and carbon cycling. Decomposition rate is influenced by numerous factors, such as temperature, humidity, litter properties, soil properties, and properties of ... -
Optimal Water-Fertilizer Combinations for Efficient Nitrogen Fixation by Sugarcane at Different Stages of Growth
( MDPI , 2021 , Article)High fertilizer application and over-irrigation in sugarcane systems can cause considerable N2O emissions. Optimized water-fertilization management which reduces N2O emissions, while maintaining sugarcane biomass, is ... -
Impacts of rapid urbanization on ecosystem services under different scenarios – A case study in Dianchi Lake Basin, China
( Elsevier , 2021 , Article)Dianchi Lake Basin (DLB) is a typical and representative type of urbanization model based on the plateau lake ecosystem, with scarce land resources, deficient water resources, and a fragile ecological environment, in ... -
Fuelwood and fodder consumption patterns among agroforestry-practicing smallholder farmers of the lower Himalayas, India
( Springer , 2021 , Article)Trees are important as a source of fuelwood and fodder for rural populations in the Himalayas. This paper analysed the fuelwood and fodder consumption patterns of rural households in 16 villages in Alaknanda Valley, ... -
Cushion plants act as facilitators for soil microarthropods in high alpine Sweden
( Springer , 2021 , Article)Cushion plants can have positive impacts on plant richness in severe environments and possibly across trophic levels on arthropods, an under-studied topic. This study examined whether soil communities under cushions have ... -
Community perspectives on conservation of water sources in Tarkeshwar sacred groves, Himalaya, India
( IWA PUBLISHING , 2021 , Article)Sacred groves have significance in socio-culture and biodiversity conservation. This study evaluated local people's perceptions regarding conservation of sacred groves for water services, through willingness-to-pay (WTP), ... -
Climate Warming Consistently Reduces Grassland Ecosystem Productivity
( Advanced Earth And Science , 2021 , Article)Future climate may profoundly impact the functioning of terrestrial ecosystems. However, we do not know well how the functioning of different types of grassland ecosystems is associated with variation in temperature and ... -
The tundra phenology database: More than two decades of tundra phenology responses to climate change
( NRC Research Press , 2021 , Article)Observations of changes in phenology have provided some of the strongest signals of the effects of climate change on terrestrial ecosystems. The International Tundra Experiment (ITEX), initiated in the early 1990s, established ...