نتایج جستجو برای: biotic index

تعداد نتایج: 408379  

2011
Simona Littnerová Jirí Jarkovský

Temporal changes in the structure of biological communities are one of the factors affecting water quality assessment systems. The aim of our work was to analyze the temporal variability of benthic macroinvertebrates and its consequences for the established streams typology. The data analyzed come from a biomonitoring of streams of the Czech Republic during 2002-2005. Changes of the structure o...

2016
Ni Huang Li Wang Yongsen Hu Haifeng Tian Zheng Niu

Spatial variation of soil respiration (Rs) in cropland ecosystems must be assessed to evaluate the global terrestrial carbon budget. This study aims to explore the spatial characteristics and controlling factors of Rs in a cropland under winter wheat and summer maize rotation in the North China Plain. We collected Rs data from 23 sample plots in the cropland. At the late jointing stage, the dai...

Journal: :American Entomologist 2022

2017
Léo Bacon Yves Hingrat Frédéric Jiguet Anne-Christine Monnet François Sarrazin Alexandre Robert

The habitat suitability index, which reflects spatial variability in species occurrence probability, has been shown to exhibit various contrasting relationships with local demographic performances (survival, productivity) in several species. One proposed explanation for these discrepancies is that the link between the habitat suitability index and demography is influenced by density-dependent, ...

Journal: :Elementa: Science of the Anthropocene 2013

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