Adverse changes in rangeland vegetation can be considered as one of the criteria for land degradation. Some of these changes can be evaluated through monitoring the spatial changes of landscape parameters. This study aimed to investigate the landscape changes in Kezab rangelands of Yazd province, central Iran. Landsat satellite images of 1990, 2002, and 2013, and landscape metrics including Tot...

Vegetation-based landscape classifications reflecting combinations of different types vegetation promote the understanding patterns and ecological restoration. However, widespread containing a single thematic resolution may oversimplify patterns. This study aimed at providing solution for testing formalized classification, relying on landscape’s full potential, i.e. multiple potential (MPV). Tw...

—The relationships between wetland water conditions and breeding numbers of Mallard ( Anas platyrhynchos ), Northern Pintail ( A. acuta ), Blue-winged Teal ( A. discors ), and Northern Shoveler ( A. clypeata ) during May of 1992-1995, were examined on twelve study areas in the eastern Prairie Pothole Region. Data were collected on water levels (by wetland class [temporary, seasonal, semipermane...

the scientific panel on “landscape ecology” was held in nazar research center by presence of professors and experts in “landscape” and “ecology”, in order to discuss the relation of these concepts and definition of “landscape ecology”. in this panel arranged by dr. seyed amir mansouri, director of landscape architecture department at university of tehran and president of nazar research center, ...

background: the aim of this prospective study was to evaluate the characteristics of patients, treated by acute peritoneal dialysis (pd). we also assessed the indications for pd, pd-associated complications and neonatal outcomes in our patients. methods: during five years, 30 term newborns underwent temporary cycling pd. the procedure was performed by applying the manual technique. a straight a...

introduction: the purpose of this in vitro study was to evaluate the sealing ability of the readymade temporary filling and hand mixed materials by assessing coronal microleakage. materials & methods: standardized access cavities were prepared in 80 intact human permanent premolar teeth. they were divided randomly into four experimental groups (n=20). the teeth were restored using one of the te...