Short term responses of two collembolan 1 communities after abrupt environmental perturbation : a field experimental approach 2 3
نویسندگان
چکیده
1 2 A soil transfer field experiment has been designed in order to study (i) whether and how 3 Collembolan communities are affected by a sudden perturbation (a shift from agricultural land 4 to heathland, and the reverse), and (ii) whether species do respond in the same direction and 5 to the same extent according to their habitat preference (ascertained by controls). The study 6 was conducted in the Parc Naturel Régional de la Brenne (Indre, France) in a private property 7 where the land is shared between heathland and pasture. We showed that heathland differed 8 from pasture in its species composition, which is not novel, but that both communities did not 9 evolve in the same manner when transferred in another environment. The heathland 10 community seemed more stable than the pasture community, although it was colonized by the 11 surrounding fauna within two months, while the the pasture community seemed less stable 12 when transferred to heathland. 13 14
منابع مشابه
Short-term responses of two Collembolan communities after abrupt environmental perturbation: a field experimental approach
متن کامل
Long-term effects of short-term perturbation in a subalpine grassland.
Theoretical advances and short-term experimental studies have furthered our understanding of how ecosystems respond to perturbation. However, there are few well-replicated experimental studies that allow an assessment of long-term responses. Results from a controlled, large-scale field experiment in a subalpine grassland near Interlaken, Switzerland, show that 2-4 years of liming (Ca: 40 g x m(...
متن کاملComparison of the effectiveness of short-term solution-oriented psychotherapy and schema therapy on perturbation tolerance and unbearable intolerance in women with mental disorders
The aim of this study was to compare the effectiveness of short-term solution-oriented psychotherapy and schema therapy on tolerance of confusion and indecisive intolerance in women with neurological disorders. This study was a quasi-experimental study (pre-test design, post-test, follow-up with a control group). The statistical population included all patients with dementia in Karaj in the per...
متن کاملEffect of water deficit on physiological response, total protein and gene expression of Rab17 in wheat (Triticumaestivum)
Drought is the cause of adverse environmental impacts on plant growth and crop yield. In this study, the effects of water deficit on plant molecular and physiological responses were investigated using two cultivars (namely, Sardari and Zarin) of bread wheat selected based on the results of a three-year research. For the purposes of this study, they were grown in plastic pots containing field so...
متن کاملField-scale transplantation experiment to investigate structures of soil bacterial communities at pioneering sites.
Studies on the effect of environmental conditions on plants and microorganisms are a central issue in ecology, and they require an adequate experimental setup. A strategy often applied in geobotanical studies is based on the reciprocal transplantation of plant species at different sites. We adopted a similar approach as a field-based tool to investigate the relationships of soil bacterial commu...
متن کامل