Background In the Antarctic, only two species of Chironomidae occur naturally-the wingless midge, Belgica antarctica , and the winged midge, Parochlus steinenii . B. antarctica is an extremophile with unusual adaptations. The larvae of B. antarctica are desiccation- and freeze-tolerant and the adults are wingless. Recently, the compact genome of B. antarctica was reported and it is the first An...

Abstract Lake Menjer is one of the crater lakes located in highland Central Java, Indonesia, which has received multiple stressors from anthropogenic activities. Benthic macroinvertebrates as a key indicator for water quality were little known there. Thus, this present research aimed to identify benthic macroinvertebrate structures and understand response community Menjer. Samplings conducted t...

Identifying factors regulating variation in numbers of individuals among populations across a species' distribution is a fundamental goal in ecology. A common prediction, often referred to as the abundant-centre hypothesis, suggests that abundance is highest near the centre of a species' range. However, because of the primary focus on the geographical position of a population, this framework pr...

trifolium species and cultivars are considered important forage crops iran , growing throughout the country. the present article considered the karyotypic details of trvulim taxa using multivariate statistical analysis. taxa studied included: trifolim restylinatum (six populations: shazand, soriyan, kordestan, harati, enaj and lordegan), t. repense, t, fragverm, t. prateme and t, alexandrinm. s...

Mitrani Department of Desert Ecology, Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Desert Animal Adaptations and Husbandry, Wyler Department of Dryland Agriculture, Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Midreshet Ben-Gurion, Israel, Department of Ecology and Environment Conservation, Omsk State Pedagogical Univ...

Replant disease refers to the poor growth of trees when attempting establish same or related species on old orchard sites. The use pre-plant Brassicaceae seed meal (SM) soil amendments in combination with apple replant disease-tolerant rootstock genotypes has been shown be a promising strategy for control (ARD). However, optimizing microorganism-driven protection roots from infection by multipl...

Connectivity and patch size are important landscape characteristics that drive patterns of abundance diversity across scales. However, responses to connectivity dependent on species traits. Riverine landscapes highly dynamic both spatially temporally, with hydrologic being a major driver diversity. Here we modeled the densities 2 taxa differ in life history dispersal ability, Virginia River Sna...

The development and the evaluation of a biological indicator system for pesticide pollution in streams are presented. For small headwater streams with an agricultural catchment area, the expert system Limpact estimates the pesticide contamination according to the four classes: Not Detected (ND); Low (L); Moderate (M) and High (H) contamination without any specification of the chemical agents. T...

BACKGROUND Previous studies have focused on linking soil community structure, diversity, or specific taxa to disturbances. Relatively little attention has been directed to crop monoculture soils, particularly potato monoculture. Information about microbial community changes over time between monoculture and non-monoculture treatments is lacking. Furthermore, few studies have examined microbial ...

Warming in the Arctic is predicted to change freshwater biodiversity through loss of unique taxa and northward range expansion lower latitude taxa. Detecting such changes requires establishing circumpolar baselines for diversity, understanding primary drivers diversity. We examined benthic macroinvertebrate diversity using a dataset >1,500 lake river sites. Rarefied ? within catchments was asse...