نتایج جستجو برای: morisita
تعداد نتایج: 105 فیلتر نتایج به سال:
در تحقیق حاضر، برآورد گوشه اکولوژیک گونه زالزالک، تاثیر عوامل اقلیمی و توپوگرافی بر تراکم پایه های زالزالک و همپوشانی اکولوژیک گونه زالزالک با گونه های درختی همراه در مناطق جنگلی استان چهارمحال و بختیاری مورد بررسی قرار گرفت. اندازه گیری گوشه اکولوژیک و دامنه گسترش گونه زالزالک با استفاده از شاخص های levins (1968)، shannon-wiener (1971)، smith (1982) و hurlberts (1978) اندازه گیری شد. شاخص های ...
Soil diplopods are an important biotic component in agricultural land ecosystems. Its presence the soil is decomposition process of organic matter, and plays a role increasing fertility. This study aims to community structure Diplopoda at different altitudes Bengkulu Kabawetan Tea Plantation. The location used stratified sampling method which based on altitude 800 m, 900 m 1000 above sea level....
Penelitian ini bertujuan untuk mengetahui sebaran burung mandar besar di Negeri Rumah Sokat, Kecamatan seram utara, Kabupaten Maluku Tengah. Tujuan dari penelitian adalah pola bagi Mandar Besar. dilakukan pada bulan Oktober 2020 s.d November 2020. Pengamatan Besar menggunakan metode point count dengan bantuan alat hitung hand held counter. menunjukkan hutan Sokat sebagai area pengamatan. Wilaya...
spatial patterns are useful descriptors of the horizontal structure in a plant population and may change over time as the individual components of the population grow or die out. but, whether this is the case for desert woody annuals is largely unknown. in the present investigation, the variations in spatial patterns of tribulus terrestris during different pulse events in semi-arid area of the ...
The distribution pattern of plants is an important characteristic of plant communities, being of critical importance in ecological studies and sampling plans. This study was designed to investigate the efficiency of different shapes and sizes of quadrants to delineate the spatial patterns of Astragalus verus Olivier by using dispersion indices. At Mayan Rangeland (Khorasan Razavi), a digital ca...
This study aimed to investigate the community structure and distribution pattern of Gastropods in mangrove ecosystem Bolihutuo village. The was conducted February July 2021 two different stations. Community analysis carried out includes species composition, density, diversity, evenness, dominance, patterns by Morisita dispersion index. results showed that 13 gastropods were found from 8 familie...
Historical forest conditions are often used to inform contemporary management goals because historical forests are considered to be resilient to ecological disturbances. The General Land Office (GLO) surveys of the late 19th and early 20th centuries provide regionally quasi-contiguous data sets of historical forests across much of the Western United States. Multiple methods exist for estimating...
O estudo foi realizado na Reserva Florestal de Mecubúri, em Moçambiquee, visando avaliar os efeitos das atividades antrópicas sobre a cobertura florestal. Áreas queimada, agrícola e exploração florestal foram comparadas com uma área controle termos composição fitossociologia. Em cada área, estabelecidas, maneira sistemática, parcelas quadrangulares 20 x m, distantes m da outra, sendo o levantam...
Objetivou-se identificar o padrão de distribuição espacial e a estrutura populacional Protium decandrum (Aubl.) em uma floresta ombrófila densa Porto Grande, estado do Amapá. Foi implantada parcela permanente com dimensão 100 m x m. Foram mensurados os diâmetros alturas todos indivíduos arbóreos vivos que apresentaram diâmetro à altura peito (DAP) igual ou superior 10 cm. O foi determinado util...
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