Search results for "Statistische Methode"
showing 3 items of 3 documents
Priorities for research in soil ecology
2017
The ecological interactions that occur in and with soil are of consequence in many ecosystems on the planet. These interactions provide numerous essential ecosystem services, and the sustainable management of soils has attracted increasing scientific and public attention. Although soil ecology emerged as an independent field of research many decades ago, and we have gained important insights into the functioning of soils, there still are fundamental aspects that need to be better understood to ensure that the ecosystem services that soils provide are not lost and that soils can be used in a sustainable way. In this perspectives paper, we highlight some of the major knowledge gaps that shoul…
Ecological network analysis reveals the inter-connection between soil biodiversity and ecosystem function as affected by land use across Europe
2016
Soil organisms are considered drivers of soil ecosystem services (primary productivity, nutrient cycling, carbon cycling, water regulation) associated with sustainable agricultural production. Soil biodiversity was highlighted in the soil thematic strategy as a key component of soil quality. The lack of quantitative standardised data at a large scale has resulted in poor understanding of how soil biodiversity could be incorporated into legislation for the protection of soil quality. In 2011, the EcoFINDERS (FP7) project sampled 76 sites across 11 European countries, covering five biogeographical zones (Alpine, Atlantic, Boreal, Continental and Mediterranean) and three land-uses (arable, gra…
Need for Conclusive Evidence that Positive and Negative Reciprocity are Unrelated
2013
The strong reciprocity model of the evolution of human cooperation (1) postulates that positive and negative reciprocity are associated. Recently in PNAS, Yamagishi et al. (2) reported results that challenged this proposition by showing that the tendency to reject unfair offers in the ultimatum game is not related to various indicators of positive reciprocity in other experimental games. This result was corroborated by a nonsignificant correlation between self-reported positive and negative reciprocity.