Snow cover is a key component in Arctic ecosystems and will likely be affected by changes winter precipitation. Increased snow depth consequent later snowmelt leads to greater microbial mineralization winter, improving soil vegetation nutrient status. We studied areas with naturally differing depths date of Adventdalen, Svalbard. Soil properties, plant leaf status, species composition along the...

The aim was to estimate the impacts of invasive Impatiens parviflora on forests' herbal layer communities. A replicated Before-After-Control-Impact field experiment and comparisons with adjacent uninvaded plots were used. The alien's impact on species richness was tested using hierarchical generalized mixed effect models with Poisson error structure. Impact on species composition was tested usi...

This paper presents results from a container experiment and real-scale study in road environments for evaluating the performance of soil mixtures herbaceous perennials use rain gardens. The included 12 4 perennial species. plants were exposed to three flooding events one drought period, their overall vitality was recorded after floodings. containers stored outdoors following winter plant surviv...

Arctic regions are particularly affected by rapidly rising temperatures and altered snow regimes. Snowmelt timing depends on spring winter accumulation. Scenarios for the include both decreases increases in Predictions of future snowmelt are, thus, difficult experimental evidence ecological consequences is scarce. In 1995, a long-term factorial experiment was set up High evergreen shrub heath c...

This research focuses on the effect of trampling on vegetation in high-mountain ecosystems through the electromagnetic spectrum’s interaction with plant pigments, cell structure, water content and other substances that have a direct impact on leaf properties. The aim of the study was to confirm with the use of fluorescence methods of variability in the state of high-mountain vegetation previous...

Determinations of the NH(3) compensation point for the understory plant of semi-natural woodlands Luzula sylvatica (Huds.) Gaud. were carried out by measurements of gas exchange and by calculation from the NH(4)(+) concentration and pH of extracts of the foliar apoplast. Compensation points determined by gas exchange measurements were among the lowest yet reported (0.51-1.10 microg NH(3) m(-3))...

Plant colonization by arbuscular mycorrhizal fungi (AMF) is widespread and can offer considerable benefits in terms of growth, nutrient uptake plant yield. However, it still unresolved how different species functional groups respond to AMF taxa. Here we established 336 grassland microcosms determine the response 14 displaying contrasting (grasses, legumes non-leguminous forbs) for presence thre...