نتایج جستجو برای: shannon wiener

تعداد نتایج: 17177  

ژورنال: :علوم محیطی 0
احسان پروانه اول دانشگاه آزاد اسلامی مائده دهقانی تفتی دانشگاه آزاد اسلامی بهرام حسن زاده کیابی داﻧﺸﮕﺎه ﺷﻬﯿﺪ ﺑﻬﺸﺘﯽ

مقاله پیش رو حاصل بررسی 7 ماهه (فروردین تا اول آبان ماه 1386) ، در اطراف شهرستان سبزوار است . نمونه ها در این مدت در 7 پلات 1 هکتاری (100 متر × 100 متر ) ، به منظور بررسی رابطه ی احتمالی میان تنوع ، غنا، یکنواختی و فراوانی گونه ای سوسماران با نوع پوشش گیاهی و میزان تاج پوشش آن ها ، به دو صورت پیمایشی و استفاده از تله های چاله ای (pitfall) جمع آوری شدند. تعداد 20 تله در هر کوادرات ( به صورت سیست...

Journal: :Turkish Journal of Forestry 2021

The study was carried out to compare the biodiversity parameters of insect species in natural and un-natural habitats Gölcük Nature Park (Isparta Province) between 2018 2019. Two two unnatural (impact tourism) were selected realize mentioned aim. Totally 40 pitfall traps (10 for each habitat) set up sample Coleoptera species. Species richness found higher than ones. Diversity index (both Shanno...

Journal: :Agriprima : journal of applied agricultural sciences 2023

Keberadaan gulma dipengaruhi oleh jenis pupuk yang diberikan pada tanaman budidaya. Setiap memiliki kandungan berbeda sehingga berpengaruh terhadap spesies tumbuh. Agar dapat mengetahui tumbuh perlu dilakukan identifikasi lahan Penelitian bulan Juni – Agustus 2021 di Kebun pertanian Kelompok Tani Sinar Harapan, Kota Tarakan Provinsi Kalimantan Utara. Metode penelitian yaitu metode sampling acak...

Journal: :CienciaUAT 2022

Los sistemas agroforestales pueden representar importantes nichos ecológicos que coadyuven a la conservación de diversidad avifaunística. El objetivo este trabajo fue estimar y comparar uso hábitat aves insectívoras en enclavados un bosque mesófilo montaña. Se efectuó el monitoreo agosto 2018 enero 2019 tres hábitats: café tradicional (CT), potrero (PT) montaña (BMM). determinaron índices abund...

2009
Angel Garrido

Our paper analyzes some aspects of of a very important Uncertainty Measure, one that belongs to the so-called Entropy; more concretely, the Kullback-Leibler divergence measure. We need to obtain new ways to model adequate conditions or restrictions, constructed from vague pieces of information. For this, it will be very necessary to analyze di¤erent type of measures; in particular, to consider ...

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 ...

, ,

The aim of this study was to investigate the flora, life form, chrotype, diversity and evenness of accompanying species of Artemisia melanolepis Boiss. and Artemisia aucheri Boiss. in the south east of Sabalan. Species were collected and identified. Overall, 82 identified plant species was belonging to 23 families and 61 genera. Asteraceae, Fabaceae, Lamiaceae and Poaceae families were the domi...

Hamid Ahani, Hamid Jalilvand

Forests are biologically diverse systems, representing some of the richest biological areas on Earth. They offer a variety of habitats for plants, animals and micro-organisms. However, forest biodiversity is increasingly threatened as a result of deforestation, fragmentation, climate change and other stressors. Biodiversity is the variation of life forms within a given ecosystem, biome, or on t...

Hamid Ahani, Hamid Jalilvand

Forests are biologically diverse systems, representing some of the richest biological areas on Earth. They offer a variety of habitats for plants, animals and micro-organisms. However, forest biodiversity is increasingly threatened as a result of deforestation, fragmentation, climate change and other stressors. Biodiversity is the variation of life forms within a given ecosystem, biome, or on t...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید