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... There is still a controversy about the environmental impact of fishponds, especially on their ability to retain nutrients. This paper presents some basic rules of nutrient cycling in running and stagnant waters and the biotic and abiotic transformation of nutrients delivered to dam reservoirs and fishponds. Based on these common properties of eutrophic stagnant waters, some critical remarks are pr ...
... To benefit from expansion in space, a clonal plant must at first invest some of its resources in the production of clonal offspring. When resources are scarce, investment in clonal growth can be costly. Investment could be more costly in the case of long compared to short rhizomes. However, benefits can also be substantial if the plant can attain resources from a large area. Thus, both the growth ...
... Reports of hypomagnesaemia, a Mg deficiency in ruminants, occur most frequently when livestock graze the spring growth of grass pastures. To minimize these animal losses it is important to know whether differences exist among forage grasses for potential risk of Mg deficiency in ruminant livestock. The objectives of this study were 1) to determine if several cool-season forage grasses accumulate K ...
... 1. Different grass species dominate grasslands fertilized with nitrogen (N) or phosphorus (P), possibly due to the impact of N : P stoichiometry on competitive interactions. How species compete for nutrients, and whether the mechanisms are similar for N and P, is still not fully understood. 2. We investigated whether the outcome of competition between Alopecurus pratensis and Agrostis capillaris d ...
... 1. In plant communities, a better use of nitrogen for growth and access to additional nitrogen by N₂ fixing legumes have been suggested as mechanisms that contribute to the positive relationship between species richness and above-ground biomass production. We studied above-ground biomass production, and plant and soil nitrogen in a biodiversity experiment using a pool of nine potentially dominant ...
K. Jankowski; A. G. Ciepiela; J. Jankowska; W. Szulc; R. Kolczarek; J. Sosnowski; B. Wiśniewska-Kadżajan; E. Malinowska; E. Radzka; W. Czeluściński; J. Deska
... The effect of traffic on the content of lead and cadmium in grass morphological parts—leaves, shoots, and inflorescences—was studied. The samples were taken on a part of the European route E30 (Siedlce by road). The following plants were tested: Dactylis glomerata, Arrhenatherum elatius, and Alopecurus pratensis. During the flowering of grasses, the plant material was collected at distances of 1, ...
... The aim of this study was to determine the effects of different long‐term management options on re‐establishment of traditional species‐rich grassland in a Lolio‐Cynosuretum grassland. The experiment was set up in 1987 in a low‐fertilized mown pasture in the Eifel Mountains (Germany). Two and four cuts per year each with three levels of nitrogen fertilizer application were compared to no applicati ...
... Hybrids between Alopecurus pratensis L. (2n = 28) and A. aequalis Sobol. (2n = 14) were obtained with difficulty. In meiosis the F1 plants formed seven bivalents and seven univalents, proving at least partial homology between two of the three genoms involved. The F1 plants were highly sterile, but some progeny were obtained after open pollinating. One pentaploid plant, probably arising through a f ...
... BACKGROUND AND AIMS: Leaf litters commonly interact during decomposition in ways that can synergistically increases rates of decay. These interactions have been linked to moisture availability, suggesting that drought could slow decomposition rates by disrupting litter interactions. Slowed decomposition may reduce competitive ability of exotic species that exploit rapid decomposition rates as part ...
Jonathan R. De Long; Marina Semchenko; William J. Pritchard; Irene Cordero; Ellen L. Fry; Benjamin G. Jackson; Ksenia Kurnosova; Nicholas J. Ostle; David Johnson; Elizabeth M. Baggs; Richard D. Bardgett
... Maternal effects (i.e. trans‐generational plasticity) and soil legacies generated by drought and plant diversity can affect plant performance and alter nutrient cycling and plant community dynamics. However, the relative importance and combined effects of these factors on plant growth dynamics remain poorly understood. We used soil and seeds from an existing plant diversity and drought manipulatio ...
... Our study on the dependence of the mode and degree of cultivation of the grassland on the rate of mycorrhizal development in the species Alopecurus pratensis and Trisetum flavescens suggests that the degree of cultivation, and mainly the amount of available food resources in the soil, influence the development of the endophyte in the roots of the plant hosts. ...
... 1. Climate extremes are expected to increase in frequency and magnitude as a consequence of global warming. 2. Managed permanent grasslands cover a large surface in Europe and contribute substantially to agricultural production. These managed plant communities are dominated by perennial clonal species. Their capacity to adapt to rapidly changing environmental conditions may be limited. 3. We hypot ...
... SynopsisVelvetgrass invasion of stands of perennial ryegrass, orchardgrass, tall fescue, and meadow foxtail was retarded by clipping to a height of 4 inches as compared to 2 inches, and by clipping twice during the season as compared to clipping 3 times. ...
... SypnosisEffects of 0, 80, and 160 pounds nitrogen per acre on forage production and percentage crude protein of eight seeded grass species and varieties in a high altitude meadow near Pinedale, Wyoming were studied. Coinmon, Lincoln and Manchar bromegrass, orchardgrass, timothy, intermediate wheatgrass, meadow foxtail and Reed canarygrass were studied. Variations in species and variety response to ...
... Little is known about the effects of nitrogen (N), phosphorus (P) and potassium (K) application on soil chemical properties and plant species composition of mountain Festuca rubra grasslands. In this study, we aimed to determine whether fertiliser application affects plant species composition and soil properties during periods of management, and whether residual after-effects of fertiliser applica ...
Alopecurus pratensis; Festuca pratensis; Heracleum sphondylium; Ranunculus acris; canopy; herbs; meadows; mowing; planting date; research management; species diversity; Central European region; Czech Republic
Abstract:
... Semiânatural temperate grasslands in Europe make an important contribution to biodiversity, but their existence has been endangered by both agricultural intensification and abandonment. In the Czech Republic, Arrhenatherion meadows are a typical example, with their conservation made difficult by the scarcity of research on effective management practices. We examined effects of two potentially us ...
... Cattle slurry is frequently used fertilizer on grasslands, but little is known about its effect on plant species composition. The aim of this study was therefore to assess effect of different application rates of cattle slurry (S0 – 0, S1 – 60, S2 – 120, S3 – 180, S4 – 240 kg N/ha/year) on the plant species composition of three-cut grassland. The study was performed o ...