2,195 results match your criteria resources desert


Both pH and salinity shape the microbial communities of the lakes in Badain Jaran Desert, NW China.

Sci Total Environ 2021 Jun 6;791:148108. Epub 2021 Jun 6.

School of Water Resources and Environment, China University of Geosciences, Beijing 100083, China; Department of Geology and Environmental Earth Science, Miami University, Oxford, OH 45056, USA.

Badain Jaran Desert (BJD), characterized by extremely arid climate and tallest sand dunes in the world, is the second largest desert in China. Surprisingly, there are a large number of permanent lakes in this desert. At present, little is known about the composition and distribution of microbial communities in these desert lakes, which are an important bioresource and play a fundamental role in the elemental cycles of the lakes. Read More

View Article and Full-Text PDF

Different Responses of Soil Bacterial and Fungal Communities to 3 Years of Biochar Amendment in an Alkaline Soybean Soil.

Front Microbiol 2021 26;12:630418. Epub 2021 May 26.

Department of Bioengineering, College of Life Science, Huaibei Normal University, Huaibei, China.

Biochar as a soil amendment has been regarded as a promising way to improve soil fertility. However, the response of microbial community after biochar and biochar compound fertilizer (BCF) application has not been thoroughly elucidated. This study evaluated the changes in abundance and composition of bacterial and fungal communities using quantitative real-time PCR (qPCR) and Illumina MiSeq amplicon sequencing. Read More

View Article and Full-Text PDF

Modeling streamflow driven by climate change in data-scarce mountainous basins.

Sci Total Environ 2021 Jun 4;790:148256. Epub 2021 Jun 4.

State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China.

The impacts of climate change on the water environment have aroused widespread concern. With global warming, mountainous basins are facing serious water supply situations. However, there are limited meteorological stations on mountains, which thus creates a challenge in terms of accurate simulation of streamflow and water resources. Read More

View Article and Full-Text PDF

More sensitive to drought of young tissues with weak water potential adjustment capacity in two desert shrubs.

Sci Total Environ 2021 May 29;790:148103. Epub 2021 May 29.

Shapotou Desert Research and Experiment Station, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, 320 Donggang West Road, Lanzhou 730000, China. Electronic address:

Water is the main limiting factor for survival and growth for desert plants, and plants can alleviate water deficits under drought by adjusting water potential (Ψ). However, the water potential adjustment capacity and water-sensitivity at the tissue level among shrub species remains unclear. The objective of this study was to evaluate water potential adjustment capacity and water-sensitivity of different tissues in Artemisia ordosica and Caragana korshinskii through calculating the water relation parameters from pressure-volume (P-V) curves. Read More

View Article and Full-Text PDF

The influence of decision-making in tree ring-based climate reconstructions.

Nat Commun 2021 06 7;12(1):3411. Epub 2021 Jun 7.

Department of Earth & Climate Sciences, San Francisco State University, San Francisco, CA, USA.

Tree-ring chronologies underpin the majority of annually-resolved reconstructions of Common Era climate. However, they are derived using different datasets and techniques, the ramifications of which have hitherto been little explored. Here, we report the results of a double-blind experiment that yielded 15 Northern Hemisphere summer temperature reconstructions from a common network of regional tree-ring width datasets. Read More

View Article and Full-Text PDF

Potential of organic and inorganic amendments for stabilizing nickel in acidic soil, and improving the nutritional quality of spinach.

Environ Sci Pollut Res Int 2021 Jun 7. Epub 2021 Jun 7.

Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtse River), Ministry of Agriculture; College of Resources and Environment, Huazhong Agricultural University, Wuhan, 430070, China.

Contamination of soils by nickel (Ni) has become a serious environmental problem throughout the world, and this substance wields dangerous effects on the ecosystem and food chain. A pot experiment was conducted to examine the effect of rice straw (RS), rice straw biochar (BI), and calcite (CC) at 1% and 2% application rates in a Ni-contaminated soil. The objective was to potentially stabilize Ni and reduce its bioavailability to spinach (Spinacia Oleracea L. Read More

View Article and Full-Text PDF

Drought of early time in growing season decreases community aboveground biomass, but increases belowground biomass in a desert steppe.

BMC Ecol Evol 2021 Jun 1;21(1):106. Epub 2021 Jun 1.

National Hulunber Grassland Ecosystem Observation and Research Station, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, 10008, China.

Background: Increasing drought induced by global climate changes is altering the structure and function of grassland ecosystems. However, there is a lack of understanding of how drought affects the trade-off of above- and belowground biomass in desert steppe. We conducted a four-year (2015-2018) drought experiment to examine the responses of community above-and belowground biomass (AGB and BGB) to manipulated drought and natural drought in the early period of growing season (from March to June) in a desert steppe. Read More

View Article and Full-Text PDF

() Evolution in the Genus .

Plants (Basel) 2021 May 25;10(6). Epub 2021 May 25.

Centro de desenvolvimento Tecnológico-CDTec, Graduate Program in biotechnology, Capão do Leão Campus, Federal de Pelotas, Pelotas 96160, Brazil.

Cooking quality is an important attribute in Common/Asian rice ( L.) varieties, being highly dependent on grain starch composition. This composition is known to be highly dependent on a cultivar's genetics, but the way in which their genes express different phenotypes is not well understood. Read More

View Article and Full-Text PDF

The Importance of Non-Diffusional Factors in Determining Photosynthesis of Two Contrasting Quinoa Ecotypes ( Willd.) Subjected to Salinity Conditions.

Plants (Basel) 2021 May 6;10(5). Epub 2021 May 6.

Plant Physiology Laboratory, Institute of Agronomic and Veterinary Sciences, Universidad de O´Higgins, Rancagua 2820000, Chile.

The broad distribution of quinoa in saline and non-saline environments is reflected in variations in the photosynthesis-associated mechanisms of different ecotypes. The aim of this study was to characterize the photosynthetic response to high salinity (0.4 M NaCl) of two contrasting Chilean genotypes, Amarilla (salt-tolerant, ecotype) and Hueque (salt-sensitive, coastal ecotype). Read More

View Article and Full-Text PDF

Indirect effects of African megaherbivore conservation on bat diversity in the world's oldest desert.

Conserv Biol 2021 Jun 1. Epub 2021 Jun 1.

Department of Fish, Wildlife, and Conservation Biology, Colorado State University, 1474 Campus Delivery, Fort Collins, CO, 80523, USA.

In extreme environments, temperature and precipitation are often the main forces responsible for structuring ecological communities and species distributions. The role of biotic interactions is typically thought to be minimal. By clustering around rare and isolated features like surface water, however, effects of herbivory by desert-dwelling wildlife can be exacerbated. Read More

View Article and Full-Text PDF

Ion migration process and influencing factors in inland river basin of arid area in China: a case study of Shiyang River Basin.

Environ Sci Pollut Res Int 2021 May 29. Epub 2021 May 29.

College of Geography and Environmental Science, Northwest Normal University, Lanzhou, 730070, Gansu, China.

A thorough understanding of the processes and driving factors of ion migration, dilution, and enrichment in arid inland river basins is the basis for implementing water resources management. In this study, we analyzed the water chemistry of streamflow, groundwater, and precipitation and the behavior of main elements in the Shiyang River Basin by means of the hydrochemical diagram and multivariate statistical analysis. The spatial variation of water chemistry was obvious, and the conversion between different water bodies was frequent. Read More

View Article and Full-Text PDF

β-Sitosterol differentially regulates key metabolites for growth improvement and stress tolerance in rice plants during prolonged UV-B stress.

J Genet Eng Biotechnol 2021 May 29;19(1):79. Epub 2021 May 29.

National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, 430070, China.

Background: Elevated ultraviolet-B (UV-B) radiation is potentially deleterious to many organisms specifically crop plants and has become a global challenge. Rice is an exceptionally important staple food which is grown worldwide, and many efforts have been done recently to improve rice varieties against UV-B stress. This current study aims to investigate the effects of exogenous application of β-sitosterol (βSito) on growth improvement and tolerance level of rice plants against prolonged UV-B stress. Read More

View Article and Full-Text PDF

[Responses of the spatial distribution of to stocking rate at different scales.]

Ying Yong Sheng Tai Xue Bao 2021 May;32(5):1735-1743

Ministry of Education Key Laboratory of Grassland Resources, College of Grassland, Resources and Environment, Inner Mongolia Agricultural University, Hohhot 010019, China.

We conducted an experiment to test the characteristics and differences of the spatial distribution of constructive species at different scales under different stocking rates in the desert steppe in Siziwang Banner, Inner Mongolia. The spatial distribution of under four treatments (control, light grazing, moderate grazing, and heavy grazing) at different scales (small scale as 1 m×1 m and mesoscale as 5 m×10 m) were analyzed. The results showed that the population density of at mesoscale in the control and light grazing was significantly lower than that at the small scale. Read More

View Article and Full-Text PDF

An empirical study on industrial eco-efficiency in arid resource exploitation region of northwest China.

Environ Sci Pollut Res Int 2021 May 24. Epub 2021 May 24.

Collage of Geographical Science and Tourism, Xinjiang Normal University, Urumqi, Xinjiang, China.

Located in the northwest of China, Xinjiang is a typical arid desert area and mineral resources development zone. The lack of water resources and a fragile ecological environment restricts the sustainable development of the region. Based on the industrial panel data of Xinjiang from 2001 to 2015, this paper uses the undesirable output SBM model, Malmquist index model, and Tobit regression model to comprehensively and systematically measure and evaluate the industrial eco-efficiency and its change characteristics from provincial, regional, and prefectural levels. Read More

View Article and Full-Text PDF

Quantifying the influences of natural and human factors on the water footprint of afforestation in desert regions of northern China.

Sci Total Environ 2021 Aug 19;780:146577. Epub 2021 Mar 19.

Key Laboratory of Land Surface Pattern and Simulation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China.

To mitigate desertification and alleviate soil erosion, a wide range of ecological restoration initiatives have been implemented in arid and semi-arid areas, the water consumption of ecological projects and driving mechanisms received increasing attention to balance economy development and ecology restoration at different scales. In this study, the water footprint (WF) was employed as an indicator of water consumption by afforestation, and trend analysis, texture classification and geographical detector methods were used to identify the afforestation area and assess the influences of natural and human factors on the afforestation WF in the desert regions of northern China. The results revealed four major findings. Read More

View Article and Full-Text PDF

Drinking water provision and quality at the Sahrawi refugee camps in Tindouf (Algeria) from 2006 to 2016.

Sci Total Environ 2021 Aug 17;780:146504. Epub 2021 Mar 17.

AMPHOS 21 Consulting S.L., Spain. Electronic address:

Drinking water provision has been a constant challenge in the Sahrawi refugee camps, located in the desert near Tindouf (Algeria). The drinking water supply system is itself divided in three zones which pump groundwater from different deep aquifers. It is equipped with reverse osmosis plants and chlorination systems for treating water. Read More

View Article and Full-Text PDF

How Mental Health Professionals Can Address Disparities in the Context of the COVID-19 Pandemic.

Traumatology (Tallahass Fla) 2021 Mar 10;27(1):60-69. Epub 2020 Dec 10.

Department of Psychiatry and Biobehavioral Sciences, University of California, Los Angeles, CA, USA, 90095.

The Coronavirus 2019 (COVID-19) pandemic is an unparalleled crisis, yet also a unique opportunity for mental health professionals to address and prioritize mental and physical health disparities that disproportionately impact marginalized populations. Black, Indigenous, and People of Color (BIPOC) have long experienced structural racism and oppression, resulting in disproportionately high rates of trauma, poverty, and chronic diseases that span generations and are associated with increased COVID-19 morbidity and mortality rates. The current pandemic, with the potential of conferring new trauma exposure, interacts with and exacerbates existing disparities. Read More

View Article and Full-Text PDF

Ethylene-regulated leaf lifespan explains divergent responses of plant productivity to warming among three hydrologically different growing seasons.

Glob Chang Biol 2021 May 22. Epub 2021 May 22.

School of Biological Sciences, Georgia Institute of Technology, Atlanta, GA, USA.

Leaf senescence is known to be regulated by the plant hormone ethylene, but how leaf lifespan responds to global environmental change and links to ecosystem-level responses remains largely unexplored. Here we investigated the effects of climate warming and nitrogen addition on plant functional traits, plant hormone ethylene and net primary production in a 13-year field experiment in a desert steppe. Across the last 3 years of the experiment (2016-2018), plant productivity increased under warming only in 2016, when there was above normal precipitation, but consistently increased with nitrogen addition. Read More

View Article and Full-Text PDF

Adsorption of nickel ions from electroplating effluent by graphene oxide and reduced graphene oxide.

Environ Res 2021 Aug 19;199:111322. Epub 2021 May 19.

State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory of Plant Resources and Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), School of Life Sciences, Sun Yat-Sen University, Guangzhou, 510275, PR China; State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, 830011, PR China. Electronic address:

Heavy metal pollution in the water bodies causes a serious threat to all living beings. Extended exposure of heavy metals such as nickel (Ni) ions causes cancer. Henceforth, the current study investigated the removal of Ni ions from the electroplating effluent using nanocomposites namely, Graphene Oxide (GO) and Reduced Graphene Oxide (rGO) in the presence of various factors such as contact time, pH, agitation speed and sorbent dosage. Read More

View Article and Full-Text PDF

Long-Term Warming and Nitrogen Addition Have Contrasting Effects on Ecosystem Carbon Exchange in a Desert Steppe.

Environ Sci Technol 2021 Jun 20;55(11):7256-7265. Epub 2021 May 20.

Key Laboratory of Grassland Resources of the Ministry of Education, Key Laboratory of Forage Cultivation, Processing and High Efficient Utilization of the Ministry of Agriculture and Rural Affairs, Inner Mongolia Key Laboratory of Grassland Management and Utilization, College of Grassland, Resources and Environment, Inner Mongolia Agricultural University, Hohhot 010011, China.

Desert steppe, a unique ecotone between steppe and desert in Eurasia, is considered highly vulnerable to global change. However, the long-term impact of warming and nitrogen deposition on plant biomass production and ecosystem carbon exchange in a desert steppe remains unknown. A 12-year field experiment was conducted in a desert steppe in northern China. Read More

View Article and Full-Text PDF

Biological yields through agricultural extension activities and services: A case study from Al-Baha region - Kingdom of Saudi Arabia.

Saudi J Biol Sci 2021 May 19;28(5):2789-2794. Epub 2021 Feb 19.

Department of Agricultural Extension and Rural Society, College of Food and Agricultural Sciences, King Saud University, P.O. Box 2460, Riyadh 11451, Saudi Arabia.

Purpose: This research determines the extent to which farmers benefit from agricultural extension activities and services through realizing higher biological crop yields in the Al-Baha region of the Kingdom of Saudi Arabia. Additionally, the nature of the relationship between the personal, economic and social characteristics of farmers and the degree to which they benefit from agricultural extension activities and services are studied.

Methodology: A simple random sample representing the community of 315 farmers was drawn. Read More

View Article and Full-Text PDF

First report of cucurbit yellow stunting disorder virus and cucurbit chlorotic yellows virus in melon in the Central Valley of California.

Plant Dis 2021 May 19. Epub 2021 May 19.

USDA-ARS, Salinas, California, United States.

In California, the whitefly-transmitted yellowing viruses, cucurbit yellow stunting disorder virus (CYSDV) and cucurbit chlorotic yellows virus (CCYV), both genus , fam. , have been limited to the Sonoran Desert production regions of Imperial and Riverside counties since their emergence in 2006 and 2014, respectively (Kuo et al., 2007; Wintermantel et al. Read More

View Article and Full-Text PDF

A small neighborhood well-organized: seasonal and daily activity patterns of the community of large and mid-sized mammals around waterholes in the Gobi Desert, Mongolia.

Front Zool 2021 May 17;18(1):25. Epub 2021 May 17.

School of Arts and Sciences, National University of Mongolia, Ulaanbaatar, Mongolia.

Background: Animal communities have complex patterns of ecological segregation at different levels according to food resources, habitats, behavior, and activity patterns. Understanding these patterns among the community is essential for the conservation of the whole ecosystem. However, these networks are difficult to study nowadays, due to anthropic disturbances and local extinctions, making it difficult to conclude if segregation patterns are natural or human-induced. Read More

View Article and Full-Text PDF

Geospatial modelling to estimate the territory at risk of establishment of influenza type A in Mexico - An ecological study.

Geospat Health 2021 05 14;16(1). Epub 2021 May 14.

Desert Zones Research Institute, Autonomous University of San Luis Potosí, San Luis Potosí, S.L.P.; University of Central Mexico, San Luis Potosí, S.L.P..

The aim of this study was to estimate the territory at risk of establishment of influenza type A (EOITA) in Mexico, using geospatial models. A spatial database of 1973 outbreaks of influenza worldwide was used to develop risk models accounting for natural (natural threat), anthropic (man-made) and environmental (combination of the above) transmission. Then, a virus establishment risk model; an introduction model of influenza A developed in another study; and the three models mentioned were utilized using multi-criteria spatial evaluation supported by geographically weighted regression (GWR), receiver operating characteristic analysis and Moran's I. Read More

View Article and Full-Text PDF

Variance of vegetation coverage and its sensitivity to climatic factors in the Irtysh River basin.

PeerJ 2021 5;9:e11334. Epub 2021 May 5.

State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences (CAS), Urumqi, Xinjiang, China.

Background: Climate change is an important factor driving vegetation changes in arid areas. Identifying the sensitivity of vegetation to climate variability is crucial for developing sustainable ecosystem management strategies. The Irtysh River is located in the westerly partition of China, and its vegetation cover is more sensitive to climate change. Read More

View Article and Full-Text PDF

Genomic Adaptive Evolution of Sand Rice () and Its Implications for Desert Ecosystem Restoration.

Front Genet 2021 30;12:656061. Epub 2021 Apr 30.

Key Laboratory of Stress Physiology and Ecology in Cold and Arid Regions, Gansu Province, Department of Ecology and Agriculture Research, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, China.

Natural selection is a significant driver of population divergence and speciation of plants. Due to local adaptation to geographic regions with ecological gradients, plant populations harbored a wide range of adaptive genetic variation to enable them to survive the heterogeneous habitats. This is all the more necessary for desert plants, as they must tolerant more striking gradients of abiotic stresses. Read More

View Article and Full-Text PDF

Diversity and function of rhizosphere microorganisms between wild and cultivated medicinal plant Glycyrrhiza uralensis Fisch under different soil conditions.

Arch Microbiol 2021 May 15. Epub 2021 May 15.

State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory of Plant Resources and Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), School of Life Sciences, Sun Yat-Sen University, Guangzhou, 510275, China.

Glycyrrhiza uralensis Fisch is a widely cultivated traditional Chinese medicine plant. In the present study, culture-independent microbial diversity analysis and functional prediction of rhizosphere microbes associated with wild and cultivated G. uralensis Fisch plant (collected from two locations) were carried. Read More

View Article and Full-Text PDF

Divergent vertical distributions of microbial biomass with soil depth among groups and land uses.

J Environ Manage 2021 Aug 13;292:112755. Epub 2021 May 13.

Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, 100081, China. Electronic address:

Soil microbial biomass is key to improving the prediction of soil organic carbon (SOC) dynamics by modeling. However, the driving mechanism of microbial biomass of different groups with soil depth is poorly understood across sites. Here, we compiled the biomass of different microbial groups (i. Read More

View Article and Full-Text PDF

Insights into the endophytic bacterial community comparison and their potential role in the dimorphic seeds of halophyte Suaeda glauca.

BMC Microbiol 2021 May 12;21(1):143. Epub 2021 May 12.

State Key Laboratory of Biocontrol and Guangdong Provincial Key Laboratory of Plant Resources, School of Life Science, Sun Yat-Sen University, Guangzhou, 510275, China.

Background: Seed dimorphism has been thought to be a bet-hedging strategy that helps plants survive in the disturbed environment and has been widely studied for its ecological adaptation mechanism. Many studies showed that seed-associated microorganisms play an important role in enhancing plant fitness, but information regarding endophytic bacteria associated with dimorphic seeds is limited. This study explores the influence of seed coat structure and seed phytochemical properties on the community composition and diversity of endophytic bacteria of dimorphic seeds of Suaeda glauca. Read More

View Article and Full-Text PDF

Opioid Treatment Deserts: Concept development and application in a US Midwestern urban county.

PLoS One 2021 12;16(5):e0250324. Epub 2021 May 12.

Center for Urban Regional Analysis, The Ohio State University, Columbus, OH, United States of America.

Objectives: An Opioid Treatment Desert is an area with limited accessibility to medication-assisted treatment and recovery facilities for Opioid Use Disorder. We explored the concept of Opioid Treatment Deserts including racial differences in potential spatial accessibility and applied it to one Midwestern urban county using high resolution spatiotemporal data.

Methods: We obtained individual-level data from one Emergency Medical Services (EMS) agency (Columbus Fire Department) in Franklin County, Ohio. Read More

View Article and Full-Text PDF