The availability of water shapes life in the western United States, and much of the water in the region originates in the Rocky Mountains. Few studies, however, have explicitly examined the history of water levels in the Rocky Mountains during the Holocene. Here, we examine the past levels of three lakes near the Continental Divide in Montana and Colorado to reconstruct Holocene moisture trends...

Predicting how species' abundances and ranges will shift in response to climate change requires a mechanistic understanding of how multiple factors interact to limit population growth. Both abiotic stress and species interactions can limit populations and potentially set range boundaries, but we have a poor understanding of when and where each is most critical. A commonly cited hypothesis, firs...

Climate change is expected to increase the frequency and intensity of droughts and heatwaves in Europe, leading to effects on forest growth and major forest dieback events due to hydraulic failure caused by xylem embolism. Inter-specific variability in embolism resistance has been studied in detail, but little is known about intra-specific variability, particularly in marginal populations. We e...

On our planet, the ocean margins between the Tropic of Capricorn (23◦ 27′ S) and the Tropic of Cancer (23◦ 27′ N) are directly below the sun and are consequently warmer than other parts of the earth. Higher solar energy inputs are about the only rational (but still contested) explanation for the orders of magnitude greater biological species diversity (Allen et al., 2002; Algar et al., 2006) an...

For long, widely divergent views (based on isolated pieces of historical evidence or broad geological evolution of the subcontinent, notably the rise of the Himalayas in mid-late Miocene), had prevailed regarding origin and antiquity of the Thar Desert. Studies of the past few decades have since provided a wealth of new information on landform styles, evolutionary processes and palaeoclimate hi...

Drought is still limited in most crops is produced. Morphological and physiological knowledge to improve drought resistance under drought conditions created problems important is the fact each of these genetic relationships and processes associated with the exact amount of important plant and grain yield is unknown. The other hand, heritability of grain yield under water is reduced. Improve the...

Drought is still limited in most crops is produced. Morphological and physiological knowledge to improve drought resistance under drought conditions created problems important is the fact each of these genetic relationships and processes associated with the exact amount of important plant and grain yield is unknown. The other hand, heritability of grain yield under water is reduced. Improve the...

Abstract. An inconsistent relationship between precipitation and runoff has been observed drought non-drought periods, with less usually during droughts than would be expected based solely on deficit. Predictability of these shifts in the precipitation–runoff is still challenging, largely because underlying hydrologic mechanisms are poorly constrained. Using 30 years data for 14 basins Californ...

Leaf functional traits in a plant community are the result of effect environmental conditions and have direct impact on ecosystem properties functioning. We analyzed variations five leaf communities from central Argentina under different climatic anthropogenic use determining changes physiognomy. Study sites were located Córdoba province (Argentina) within four phytogeographic units categorized...

dust storms are catastrophic natural disasters that beside other disasters frequency occur in the arid and semiaridregions worldwide. drought occurrence, climate aridity, dryness of the hamoun lake cause strong winds to below.these conditions have been prepared for dust storms in sistan region. the damages to sistan society have beenmeasured using different criteria. the result shows that, peak...