نتایج جستجو برای: shannon and wiener species diversity

تعداد نتایج: 16927632  

2008
S. L. Durst T. C. Theimer E. H. Paxton M. K. Sogge

We used Malaise traps to examine the aerial arthropod community in riparian habitats dominated by native willow, exotic saltcedar, or a mixture of these two tree species in central Arizona, USA. Over the course of three sampling periods per year in 2003 and 2004, native habitats had significantly greater diversity (Shannon–Wiener) and supported different arthropod communities compared to exotic...

Abbaspour, F., Gharaei, A., Iezadi, G.H., Mirdar Harijani , J.,

A biological assessment of the Tang Sorkh River (Iran) was studied from July 2013 to August 2014 using benthic macroinvertebrate communities. Samples were gathered every two months, from five stations using a Surber sampler( 30×30cm), fixed in formalin (4%) and then separated and identified in the laboratory. Environmental conditions (current velocity, temperature, depth, width, dissolve oxygen...

Journal: :چغندرقند 0
نرگس موسوی دانشجوی اسبق کارشناسی ارشد حشره شناسی، گروه گیاهپزشکی، دانشکده کشاورزی، دانشگاه فردوسی حسین صادقی نامقی دانشیار گروه گیاهپزشکی، دانشکده کشاورزی، دانشگاه فردوسی

in a faunistic survey conducted on auchenorrhyncha in sugar beet fields of mashhad and chenaran regions during 2008-2010, a total of 2741specimens belonging to 5 families were collected. as a result, 10 species were added to the fauna of the study area including: family cicadellidae: rhytidodus decimusquartus (schrank 1776), viridicerus malicola (dubovxdy 1966); handianus procerus (herrich-scha...

Journal: :Gazi Üniversitesi Orman Fakültesi dergisi 2021

Aim of study: The main purpose the study is to determine site factors affecting bird diversity. 
 Area This was performed in Çandır District, Isparta which located inner part Western Mediterranean region.
 Material and methods: In present study, Observations were conducted regularly a total 43 sample sites throughout each month 2016. Also, observed using point-counting techniques from...

Journal: :Journal of tropical biodiversity and biotechnology 2023

Ledokombo hillocks are small hills located in Jember, East Java that have natural resources and face habitat alteration such as plantation mining. However, a study of the diversity butterflies has not been carried out this area. We analysed using Shannon-Wiener index (H’) Pielou evenness (E). identified 514 individuals from 34 species demonstrated moderate (H'= 1.907) Our results could be used ...

Journal: :Journal of experimental marine biology and ecology 2000
Gray

Species diversity includes two aspects, the number of species (species richness) and the proportional abundances of the species (heterogeneity diversity). Species richness and heterogeneity diversity can be measured over different scales; a single point, samples, large scales, biogeographical provinces and in assemblages and habitats. In the literature, the terminology of these scales is confus...

2015
JIE YUAN XIN WEI ZHENGCHUN SHANG FEI CHENG ZHAOYONG HU XIAOFENG ZHENG SHUOXIN ZHANG

The stocks and characteristics of coarse woody debris (CWD) are expected to reflect forest stand features. However, despite their importance, there have been no reports of CWD stocks and characteristics in the Qinling Mountains. We measured the CWD stocks in different CWD types, decay classes and diameter classes of the five forest types in the Qinling Mountains. The highest biomass of CWD was ...

Journal: :Journal of clinical microbiology 2005
Gavin P Gafan Victoria S Lucas Graham J Roberts Aviva Petrie Michael Wilson David A Spratt

Studies using molecular techniques have demonstrated that a culture-based approach can severely underestimate the bacterial diversity in most environments. One of the molecular techniques that has been applied in microbial ecology is denaturing gradient gel electrophoresis (DGGE). The purpose of this study was to investigate differences in the microbiota of plaque, using a number of analysis te...

Journal: :Check List 2021

Batu Hampar Recreational Forest (BHRF) is a lowland dipterocarp forest located in the northwestern region of Peninsular Malaysia and has not been surveyed for its herpetofauna until now. A preliminary survey herpetofaunal diversity BHRF was conducted from September 2018 to February 2019 resulting 103 individuals (37 species) amphibians reptiles found. This includes 14 species frogs six families...

2014
Gaia Vaglio Laurin Jonathan Cheung-Wai Chan Qi Chen Jeremy A. Lindsell David A. Coomes Leila Guerriero Fabio Del Frate Franco Miglietta Riccardo Valentini

Tropical forests are major repositories of biodiversity, but are fast disappearing as land is converted to agriculture. Decision-makers need to know which of the remaining forests to prioritize for conservation, but the only spatial information on forest biodiversity has, until recently, come from a sparse network of ground-based plots. Here we explore whether airborne hyperspectral imagery can...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید