نتایج جستجو برای: evenness sheldon index

تعداد نتایج: 398318  

Journal: :Applied Research in Quality of Life 2015

2016
Peiqin Li Zhou Wu Tao Liu Yanan Wang

This study investigated the biodiversity, phylogeny, and antifungal activity of endophytic fungi isolated from Zanthoxylum bungeanum. A total of 940 isolates obtained were grouped into 93 morphotypes, 43 species, and 23 genera, which were authenticated by molecular identification based on rDNA internal transcribed spacer (ITS) sequence analysis. A high diversity of endophytic fungi from Z. bung...

ژورنال: مرتع 2023

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...

Journal: :journal of rangeland science 2014
mohammad jankju fariba noedoost

rangeland ploughing and cultivation using dry land farming crops may be amajor reason for the destruction of natural resources in the semiarid and sub-humid regionswhich may significantly change the composition and reduce the stability of the affectedcommunities. in present research, an abandoned ploughed site was compared with a nearbyreference site in the semiarid rangelands of baharkish, quc...

Journal: :Journal of Experimental Biology and Agricultural Sciences 2022

Peat swamp forests are playing important role in climate change by carbon storage, biodiversity conservation, and crucial local livelihoods. The construction of drainage channels Sebangau National Park, Indonesia negatively affects the Peatland ecosystem degrades vegetation diversity. This research aims to study composition diversity secondary peat Park (SNP), especially around large small chan...

ژورنال: علمی شیلات ایران 2019

Zooplanktons have an important role in food chain of the aquatic ecosystems, which acts as a food chain link between producers (phytoplankton) and higher nutritional levels. The purpose of this research was to identify and study the zooplankton density in the southeastern basin of the Caspian Sea (Gorgan Bay). Sampling was performed seasonally and samples were collected by zooplankton net (36 c...

2009
Rebecca Allen Simon Burgess Frank Windmeijer

The most widely used measure of segregation is the dissimilarity index, D. It is now well understood that this measure also reflects randomness in the allocation of individuals to units; that is, it measures deviations from evenness not deviations from randomness. This leads to potentially large values of the segregation index when unit sizes and/or minority proportions are small, even if there...

2008
Jian Ji Chen Yuanyuan Yang Wunian Kang Yanyan

Satellite remotely sensed data has significant potential use in analysis and evaluation on Landscape Pattern. Relying on the recent advances in satellite remote sensing and geographic information system (GIS) techniques, this paper aims to probe into the analysis and evaluation on landscape pattern of Songpan county, which located in the north of Sichuan province, with RS and GIS. First, the ge...

Journal: :Zeitschrift für politische Theorie 2021

Maus, Ingeborg, 2018: Justiz als gesellschaftliches Über-Ich. Zur Position der Rechtsprechung in Demokratie, Suhrkamp, Berlin. / Michelsen, Danny, 2019: Kritischer Republikanismus und die Paradoxa konstitutioneller Demokratie. Politische Freiheit nach Hannah Arendt Sheldon Wolin, Springer VS, Wiesbaden.

2008
Daisuke Kawashima Toshiaki Kanemoto Kazuyuki Sakoda Akihiro Wada Takashi Hara

The effects of the diffuser vane on the performances of the multistage centrifugal pump were investigated experimentally, taking account of the interactions among the diffuser vane, the return vane, and the next stage impeller. It is very important to match well the diffuser vane with the return vane, for improving the hydraulic efficiency of the pump. The efficiency may be more improved by mak...

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