The goal of the current research was to study the role of anthocyanin accumulation, O(2)-related photochemical processes and non-photochemical quenching (NPQ) in the response of desert and Mediterranean plants to drought and excessive light. Plants of Hordeum spontaneum were collected from Mediterranean and desert environments and were subjected to terminal drought for 25 days and then measured...

As one of the most important biological factors that maintain the stability of the largest fixed and semi-fixed desert in China, the Gurbantunggut Desert, the biological soil crusts (BSCs) develop well and play critical ecological roles in the desert ecosystem. In this paper, we briefly summarize our research findings since 2002 including species composition, distribution pattern and ecological...

Current theories regarding colonization of South America by mammals are divided between those supported by fossil evidence, which suggest the original mammal fauna of the isolated continent was augmented by early immigrants (primates, caviomorph rodents, and later, procyonids) with a final large influx of northern mammals occurring with the formation of the Panama land bridge, and an opposing v...

Modeling has played a crucial role in understanding the structural and functional dynamics of forest and grassland ecosystems in the past decades, but relatively few ecosystem models have been developed for deserts. Adapting an existing desert ecosystem model to new regions with different community components and environmental settings may testify to the generality of model applicability, furth...

Effects of aging on functional properties of caprine milk made into Cheddarand Colby-like cheeses D.W. Olson a,1, D.L. Van Hekken a,∗, M.H. Tunick a, K.A. Soryal b, S.S. Zeng c a Dairy Processing and Products Research Unit, Eastern Regional Research Center, ARS-USDA, 600 East Mermaid Lane, Wyndmoor, PA 19038, USA b Animal and Poultry Division, Desert Research Center, Matareya, Cairo, Egypt c E ...

Stephen R. Marder, David G. Daniel, Larry Alphs, A. George Awad, and Richard S. E. Keefe The Semel Institute for Neuroscience at University of California, Los Angeles and the Desert Pacific Mental Illness Research, Education, andClinical Center, LosAngeles, CA; United BioSource Corporation,Mclean, VA; Ortho-McNeil Janssen Scientific Affairs; University of Toronto and Department of Psychiatry, H...

understanding of physiological responses of salt tolerance might be lead to identify main salt tolerance mechanisms and essential approaches for improving grain yield stability, and also to select salt tolerant wheat cultivars. thus, the effects of salinity were investigated on grain yield and some of the characteristics related to salt tolerance. six wheat cultivars (roshan, kavir, karchia, ga...

The high temperatures and extended droughts that characterize habitat for desert-living reptiles may already approach their physiological tolerances and so could put them at risk due to climate change. Here I examined climate change sensitivity for desert tortoises, Gopherus agassizii, and common chuckwallas, Sauromalus ater, two large-bodied reptiles that occur across the MojaveeSonoran Desert...

– In the Colorado Desert of California, the western distributional limit of the desert tortoise (Gopherus agassizii) occurs in the Whitewater Hills of the southeastern San Bernardino Mountains. Much of the area has been developed for wind energy generation and tortoises often live in association with altered industrial landscapes. Natural habitat in the area was characterized by a sharp transit...