نتایج جستجو برای: arid zone

تعداد نتایج: 128248  

Journal: :Atmosphere 2022

High spatiotemporal resolution climate data are essential for climate-related impact studies. The Weather Research and Forecasting (WRF) model is widely used to downscale different regions with regional-specific physics configurations. This study aimed identify robust configurations of the WRF model, especially cumulus parameterization schemes, climatic zones Sudan. We focused on wet season (Ju...

Journal: :Applications in plant sciences 2015
Cairo N Forrest David G Roberts Andrew J Denham David J Ayre

PREMISE OF THE STUDY Microsatellite markers were developed for the common arid Australian shrub Acacia ligulata (Fabaceae) and the threatened overstory trees A. melvillei and A. pendula. METHODS AND RESULTS DNA sequence data generated by 454 sequencing were used to identify microsatellite nucleotide repeat motifs. Including previously developed primer sets, we report on the development of 10 ...

Journal: :The American journal of tropical medicine and hygiene 1990
M L Wilson B LeGuenno M Guillaud D Desoutter J P Gonzalez J L Camicas

The spatial pattern in Senegal of Crimean-Congo hemorrhagic fever (CCHF) virus IgG antibody prevalence in human and sheep was determined as was the relative abundance of potential tick vectors. A systematic, country-wide serological survey of sheep demonstrated that 10.4% of sheep exhibited IgG to CCHF virus. Sexes were infected equally. Antibody prevalence increased with age from 2.1% during t...

Journal: :Environmental science & technology 2007
Balaji Rao Todd A Anderson Greta J Orris Ken A Rainwater Srinath Rajagopalan Renee M Sandvig Bridget R Scanlon David A Stonestrom Michelle A Walvoord W Andrew Jackson

A substantial reservoir (up to 1 kg ha(-1)) of natural perchlorate is present in diverse unsaturated zones of the arid and semi-arid southwestern United States. The perchlorate co-occurs with meteoric chloride that has accumulated in these soils throughout the Holocene [0 to 10-15 ka (thousand years ago)] and possibly longer periods. Previously, natural perchlorate widely believed to be limited...

Journal: :Australian Journal of Agricultural Economics 1966

2017
Jennifer L Kelley Peter M Davies Shaun P Collin Pauline F Grierson

In fishes, alterations to the natural flow regime are associated with divergence in body shape morphology compared with individuals from unaltered habitats. However, it is unclear whether this morphological divergence is attributable to evolutionary responses to modified flows, or is a result of phenotypic plasticity. Fishes inhabiting arid regions are ideal candidates for studying morphologica...

2004
B. IRENE TIELEMAN JOSEPH B. WILLIAMS

We compared physiological, demographic, and ecological variables of larks to gain insights into life history variation along an aridity gradient, incorporating phylogenetic relationships in analyses when appropriate. Quantifying field metabolic rate (FMR) and water influx rate (WIR) of parents feeding nestlings as measures of parental effort, we found that parental FMR and WIR of larks decrease...

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