نتایج جستجو برای: shannon wiener

تعداد نتایج: 17177  

Journal: :Oecologia Australis 2022

The objective of this study was to survey non-volant mammals at Serra da Macaca Park Road (SP-139), particularly during road daily closure. Visual searches and camera traps were used record mammals, estimator Jackknife estimate the expected richness. Differences in diversity calculated using Shannon-Wiener index (H’). In total, 12 species four them considered threatened, sampled. Additionally, ...

Journal: :Biolova 2023

Sungai Sakti Buana memiliki potensi keanekaragaman ikan air tawar yang belum pernah diidentifikasi spesiesnya. Penelitian ini bertujuan untuk mengidentifikasi jenis tawar, mengukur indeks keanekaragaman, keseragaman, dan dominansi ada di Buana. Metode penelitian digunakan yakni eksploratif, menggunakan berbagai referensi bersifat valid, data dianalisis rumus Shannon Wiener. Hasil dari mendapatk...

Journal: :Indian journal of entomology 2022

The diversity and abundance of the Odonata documented from Gangetic plain West Bengal covering two types habitats revealed its primarily aquatic nature (Oxbow Lake, Purbasthali). other sites were predominantly grasslands, with smaller water bodies around (RRS, Chinsurah DVC canal, Baidyabati). A total 40 species belonging to 31 genera 5 families, dominant families under suborders Anisoptera Zyg...

Journal: :environmental studies of persian gulf 2015
omidvar farhadian mojtaba pouladi amir vazirizadeh roya sedaghat

the purpose of this study was to investigate the distribution and biodiversity of diatoms during different seasons and their correlation with water quality parameters in helleh river estuary, bushehr, persian gulf. samples were taken in mid-season from summer 2011 to spring 2012 during a one-year period from different stations. results showed that diatoms mostly comprised of bacillariophyceae, ...

Journal: :Bio-Edu: jurnal pendidikan biologi 2022

Insect diversity is believed to be used as a bio-indicator of spring quality. This study aimed at determining the insect around Mutis Timau Nature Reserve. The was conducted from June August 2019. Insects were caught by using yellow pan trap and hand sorting. insects determined based on Shannon-Wienner index (H'), species richness (R1), dominance (D), evenness (E). results showed that 16 belong...

Journal: :آب و توسعه پایدار 0
احمدرضا پیرعلی زفره ئی عیسی ابراهیمی درچه

evaluating the quality and quantity of water resources is crucial for a sustainable development. one of the simplest methods that is able to indicate the conditions of water quality in a short period and at a low cost, compared with the physicochemical methods, is by using the biological water quality indices. identifying the contamination of water resources using biomarkers, especially indices...

2008
Wei Lu

We extend the Wiener-Khinchin theorem to nonwide sense stationary (WSS) random processes, i.e. we prove that, under certain assumptions, the power spectral density (PSD) of any random process is equal to the Fourier transform of the time-averaged autocorrelation function. We use the theorem to show that bandlimitedness of the PSD implies bandlimitedness of the generalized-PSD for a certain clas...

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 ...

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