نتایج جستجو برای: mediterranean and semi
تعداد نتایج: 16856542 فیلتر نتایج به سال:
Polypore fungi are an important group of wood-inhabiting basidiomycetes that have significant roles in biomass recycling in forests and woodland ecosystems. Figures on the polypore diversity in Iran have been partly made available through few checklists, but there have been no comparative studies on the pattern of geographic distribution of the species. The prevalence of the Mediterranean biocl...
Effects of six tillage practices on some soil microbiological properties and crop yields were evaluated for a clay soil (Typic Haploxererts) under semi-arid Mediterranean conditions in a three year study (2006-2009). The experiment was designed as a completely randomized-block with three replications. Treatments were: conventional tillage with residue incorporated (CT1), conventional tillage wi...
Ž The predictability of Lagrangian particle trajectories in the Adriatic Sea a semi-enclosed sub-basin of the Mediterranean . Sea over a period of 1–2 weeks is investigated using three clusters consisting of 5–7 drifters. The analysis is conducted using a Gauss–Markov Lagrangian particle model, which relies on the estimate of climatological mean flow field, persistence of turbulence, and assimi...
abstract the primary purpose of this study was to explore the actual practices and cognitions of two groups of iranian eap teachers, i.e. language teachers and content teachers, with respect to teaching reading-comprehension and vocabulary. to this end, tehran university of medical sciences which authorizes both groups of teachers to teach eap courses was selected as the context of the study s...
The Mediterranean region is one of the hot spots of climate change. This study aims at understanding what are the conditions sustaining tree diversity in Mediterranean wet forests under future scenarios of altered hydrological regimes. The core of the work is a quantitative, dynamic model describing the coexistence of different Mediterranean tree species, typical of arid or semi-arid wetlands. ...
Present-day climate cannot account for the presence of such lakes in the arid to semi arid area of Jordan. Therefore more intense and wetter Mediterranean cyclones in winter coupled with Arabian monsoon or even ArabianIndian monsoon in summer would have affected major parts of Jordan up to latitude 31° 32 ́ during the warmer periods of the Pleistocene and brought more rain to establish and susta...
Most grazing lands in Mediterranean ecosystems that support extensive sheep farming systems are characterized by unfavorable edapho-climatic conditions, especially semi-arid areas. Often, though, their use is far from sustainable, causing erosion and ecosystem degradation impacts. In this paper, we explore the use, productivity, flora diversity of typical four farms at Agra locality western par...
Two of the largest crude oil-polluted areas in the world are the semi-enclosed Mediterranean and Red Seas, but the effect of chronic pollution remains incompletely understood on a large scale. We compared the influence of environmental and geographical constraints and anthropogenic forces (hydrocarbon input) on bacterial communities in eight geographically separated oil-polluted sites along the...
The semi-enclosed Mediterranean and Black Seas have many unique oceanographic and biogeographical features which could either serve to exacerbate or reduce future effects of increased pCO2 and ocean acidification (OA). Despite the fact that these seas have been the intense focus of marine research activities for decades, few studies on the effects of OA have been carried out in the region and s...
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