Dam removal is an increasingly popular restoration tool, but our understanding of ecological responses to dam removal over time is still in the early stages. We quantified seasonal benthic macroinvertebrate density, taxonomic composition, and functional traits for three years after lowhead dam removal in three reaches of the Olentangy River (Ohio, USA): two upstream of former dam (one restored,...

Although evolutionary change within most species is thought to occur slowly, recent studies have identified cases where evolutionary change has apparently occurred over a few generations. Anthropogenically altered environments appear particularly open to rapid evolutionary change over comparatively short time scales. Here, we consider a Pacific salmon population that may have experienced life-h...

1School of Traditional Medicine, Tehran University of Medical Sciences, Tehran, IR Iran 2Department of anatomy, School of Medicine, Shahid Beheshti University of medical Sciences, Tehran, IR Iran 3Department of Pharmacognosy, School of Pharmacy, Shahid Beheshti University of Medical Sciences, Tehran, IR Iran 4Department of physiology, School of Medicine, Tehran University of Medical Sciences, T...

H. Ebadi, M. Saeedian, M. Ausloos, 4, 5 and G. R. Jafari 6, 7 Bioinformatics, Institute for Computer Science, Leipzig University, Härtelstrasse 16-18, 04107 Leipzig, Germany Department of Physics, Shahid Beheshti University, G.C., Evin, Tehran 19839, Iran School of Management, University of Leicester, University Road, Leicester LE1 7RH, UK eHumanities group, Royal Netherlands Academy of Arts an...

Department of Traditional Pharmacy, School of Traditional Medicine, Shahid Beheshti University of Medical Sciences , Tehran, Iran. Food and Drug Laboratory Research center and Food and Drug Control Laboratory, MOH & ME , Tehran, Iran Department of Pharmacognosy, Faculty of Pharmacy, Tehran University of Medical Sciences , Tehran, Iran Department of Traditional Pharmacy, School of Traditional Me...

Following the principles and priorities outlined by the World Commission on Dams, managers are increasingly considering a greater variety of impacts in their decision making regarding dams. However, many challenges remain in evaluating the biophysical, socioeconomic and geopolitical impacts of dams, including the potential diversity of stakeholder perspectives on dam impacts. In this analysis, ...

Flood disasters from dam breaks cause serious loss of human life and immense damage to infrastructure and economic stability. The application of Geographic Information System technology integrated with hydrological modeling for mapping flood-inundated areas and depth can play a momentous role in further minimizing the risk and possible damage. In the present study, base terrain data, hydrologic...

At least 13 times during the Pleistocene Epoch lava flowed into the inner gorge of the Grand Canyon and formed lava dams, as high as 600 m, that temporarily blocked the flow of the Colorado River. K-Ar ages on these lava dams indicate that the seven youngest formed within a short period of time between about 0.6 and 0.4 mega-annum (Ma). The physiography of the lava dam remnants within the canyo...

While most large river-deltas in the world are facing the risk of subsidence and erosion in the Anthropocene, it is suspected that the Changjiang submerged delta (CSD) could be subjected to the impacts of the world's largest dam, the Three Gorges Dam (TGD). Here we firstly indicate that the CSD went through high accumulation (1958-1978); slight accumulation (1978-1997), slight erosion (1997-200...