abiotic factors, as topographic and physicochemical properties of soil, are the most important effective factor on vegetation in rangeland ecosystems which have the most important performances to forming and succession of plant vegetation. ecologic management of rangelands can be desired by better understanding of these effective factors. then, rangeland of javaherdeh (ramsar) in the northern a...

Abstract This paper presents a quantitative account of vegetation–environmental factor relationships in arid rangelands. Vegetation cover was recorded using Braun-Blanquet combined abundance-cover scale in each quadrat. Within each quadrat, one profile was dug and soil samples being taken at 0-20cm and 20-100cm depths. Under study physical-chemical characteristics included texture, lime, orga...

Background: Lycianthes moziniana (Capsiceae, Solanaceae) is an endemic and widespread species in Mexico. Morphological molecular evidence suggested three varieties (L. var. margaretiana, L. oaxacana).
 Hypotheses: integrated by differentiated lineages corresponding to the identified.
 Studied species: (Dunal) Bitter.
 Study sites dates: Mexico from 2017 2021.
 Methods: We me...

Relationships between distribution of periphytic diatoms and environmental variables in 19 rivers of the Lake Ladoga basin (Northwestern Russia) were examined using gradient analysis. On the basis of geology and river water chemistry, the Lake Ladoga basin could be separated into twomain parts, the northern and the southern sub-basin. The rivers in the northern sub-basin are slightly acidic and...

Urbanization affects all elements of the pre-urban environment, including soils, hydrology, vegetation, and microclimate. Recently, Saudi Arabia has experienced rapid urbanization growth. Thus, country’s biodiversity been threatened. In Riyadh region, beetle assemblages were assessed along a rural-suburban-urban gradient. A total 2791 individuals from 94 species belonging to seven families coll...

This paper addresses the cell association problem in multi-tier in-band full-duplex (FD) networks. Specifically, we consider the case of decoupled cell association (DCA) in which users are not necessarily served by the same base station (BS) for uplink and downlink transmissions. Instead, users can simultaneously associate to different BSs based on two independent weighted path-loss cell associ...