نتایج جستجو برای: indices of evenness
تعداد نتایج: 21168485 فیلتر نتایج به سال:
Abstract Background and objectives: Fire as a frequent phenomenon in rangelands and because of its complicated and different effects on natural ecosystems, has great importance. Awareness of such fire effects on vegetation cover in point of rangeland management after fire is important and helps better Understanding and sustainable management of rangelands. Changing in plant structure and compo...
Communities or ecosystems with higher biodiversity also have higher levels of ecosystem function and services, so the relationship between functional diversity and sustainability of plant communities is essential to predict ecosystem functioning. The aim of the present study was to investigate the relationship between carbon stocks and different species diversity and functional indices as well...
To gain insight into the ecological processes driving community reassembly in disturbed ecosystems, we assessed the phylogenetic dispersion of earlyand late-successional tree species occurring in lowland forests of northeastern Costa Rica. Early-successional species were more closely related than expected by chance, whereas late-successional species tended to be less closely related than expect...
Key messageThe use of structural diversity indices can be efficient tools to increase understanding changes in soil carbon storage as a key ecosystem function along the oak dieback intensity.Investigating relationships between biodiversity and functions within mass‐ratio niche complementary hypotheses is still challenging issue terrestrial ecology. These have not been studied gradient disturban...
The study of assembly rules fish communities in Neotropical floodplain lakes represents a major interest community ecology due to their high species diversity and environmental variation, both spatial temporal. In this study, freshwater fishes Lake Mamo were explored. main goals research analyse the seasonal variations taxonomic functional diversities sandbanks patches aquatic macrophytes, orde...
Understanding species diversity and disturbance relationships is important for biodiversity conservation in disturbance-driven boreal forests. Species richness and evenness may respond differently with stand development following fire. Furthermore, few studies have simultaneously accounted for the influences of climate and local site conditions on species diversity. Using forest inventory data,...
Introduction and purpose: Ticks as biological vectors and reservoirs of diseases, such as Crimean-Congo hemorrhagic fever (CCHF), have an important role in the transmission of pathogens to humans and animals. In this regard, this study aimed to determine the biodiversity indices, distribution, and fauna of the vectors of CCHF in Ahvaz, Iran. Methods: The tick samples were collected and identif...
introduction agricultural biodiversity has spatial, temporal and scale dimensions especially at agro-ecosystem levels. these agro-ecosystems that are used for agriculture are determined by three sets of factors: the genetic resources (biodiversity), the physical environment and the human management practices. most agricultural areas can be returned to their natural landscape after subsequent ge...
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