The species composition of micromycetes Scots pine seeds, collected from plantations growing in different forest vegetation conditions and selected trees age groups, was studied. It found that the most common - Alternaria alternata, Cladosporium cladosporioides, Fusarium oxysporum, Mycelia sterilia. Dominant micromycetes, particular Penicillium cyclopium, sambucinum, which are dangerous for dev...

The study of fungal antibiotics in their competitive interactions with arthropods may lead to the development novel biorational insecticides. Extracts Alternaria tenuissima MFP253011 obtained using various methods showed a wide range biological activities, including entomotoxic properties. Analysis composition and bioactivity allowed us reveal several known mycotoxins unidentified compounds tha...

this study was carried out from june to october 2008 in nansi lake. based on the data collected from five sampling stations, phytoplankton taxonomic composition, abundance, temporal variations and spatial distribution were examined. about 94 species, including 48 species of chlorophyta, 22 species of bacillariophyta, and 1 water bloom causative species were identified. average phytoplankton div...

The Alternaria brown spot (ABS) is a disease caused in tangerine plants and its hybrids by the fungus Alternaria alternata f. sp. citri which has been found in Brazil since 2001. Due to the recent occurrence in Brazilian orchards, the epidemiology and genetic variability of this pathogen is still an issue to be addressed. Here it is presented a survey about the genetic variability of this fungu...

The relationship between biodiversity and ecosystem functioning is a central issue in ecology. Previous studies have shown that producer diversity can impact the consumer community via predator-prey interactions. However, direct observations of this relationship remain rare, in particular for aquatic ecosystems. In this research, the relationship between phytoplankton diversity (species richnes...

Fresh water bodies in populated plains of tropical countries face various disturbances in the form of pollutant and nutrient inflow, heavy metal and elemental precipitation (wet or dry) and constant silt inflow (natural or anthropogenic). The physico-chemical characteristics are very much important for any water body. In lentic water bodies these characteristics shows very much variation becaus...