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, organi...

The interaction of the tyrosyl-tRNA synthetase from Bacillus stearothermophilus with its substrates in the aminoacyl adenylation reaction has been studied by stopped-flow fluorescence. The observed changes have been assigned to their chemical and physical processes by comparison with equilibrium dialysis, pyrophosphate exchange kinetics and rapid quenching and sampling techniques to give the ra...

Background: Baekdudaegan was designated in 2005 as a protected area to prevent destruction and conserve. However, there are many disturbed and destroyed areas. The total disturbed area amounts to 25.9 km (0.94%), including 13.4 km (0.49%) in the core area and 12.5 km (0.45%) in the buffer area. This study aims to classify the vegetation types established in the disturbed areas and diagnose the ...

Abstract Communities with constant presence of two insular endemic species genus Brassica ( B. cazzae Ginzb. et Teyber, mollis Vis.) were studied on the small southeastern Adriatic islands and islets (South Croatia), following Braun-Blanquet approach. From a total 51 phytosociological relevés, mostly collected in period from 2020 2022, eight associations three subassociations belonging to seven...

Although there are numerous studies on the floristic composition of Andean and Caribbean grasslands, limited information from a phytosociological point view. This work therefore aims to highlight differences in this important vegetation type these two biodiversity hotspots gain better understanding their vegetational richness. The grasslands (Ecuador) island Hispaniola is also studied. reason f...

En el presente trabajo se evalúa proceso de restauración ambiental que desarrolla en un ex basural a cielo abierto (Cuenca Matanza-Riachuelo, Municipio Marcos Paz, Buenos Aires, Argentina) mediante la utilización indicadores biológicos. Los biológicos elegidos fueron comunidades vegetales, anuros y coleópteros edáficos pertenecientes dos familias Carabidae Aphodiidae. sitios muestreo selecciona...