نتایج جستجو برای: shannon and wiener species diversity

تعداد نتایج: 16927632  

ژورنال: مرتع 2020
Erfanzadeh, Reza, Ghelichnia, Hasan, Hadinajad, Mahboobeh,

Soil seed bank can facilitate natural regeneration of rangeland ecosystems. This bank is usually influenced by local plant species. This study was conducted to investigate the effect of canopy cover of three shrubs (Amygdalus scoparia, Daphne mezereum and Ebenus stellata) on the diversity and richness of soil seed bank under their canopies in Chenarnaz rangelands, Khatam city, Yazd province. Fi...

Journal: :بوم شناسی کشاورزی 0
لیلا تبریزی پروین امینی کردکندی کورس خوشبخت

in order to investigate biodiversity and production of cultivated medicinal plants in agroecosystems of qazvin province, a study was conducted during year of 2011. interviews were carried out with farmers by using semi-structured questionnaire to obtain information regarding to biodiversity and medicinal plants production systems in main regions under cultivation of medicinal plants including f...

Journal: :E3S web of conferences 2021

Park green space is an important part of garden space, concentrated expression the diversity urban plants. In order to explore plants in park, a typical site Zhongshan Wuhan was selected for this survey. The species importance, richness index, index and evenness were used analyze characteristics plant diversity.There are total 184 114 genera 64 families Park. Among them, there 86 40 genera, 60 ...

Journal: :Revista de biologia tropical 2007
Jorge E Ramírez-Albores

Knowledge of the composition of the bird community in Alto Balsas (southwestern Puebla, Central Mexico) is needed for management programs aiming at protection and conservation of bird species and their habitats I studied sites with tropical deciduous forest. Data were obtained during 1666 hours of field work in 238 days from March 1998 to September 2000. Six permanent transect (3.5 km long and ...

2004
Viviana Berrios

The trophic relationships of 13 intertidal fish species collected in northern Chile (20°18’S and 20°54’S) from July 1997 to July 1998, the stomach content analysis of 820 specimens, were investigated. The importance of the prey items was assessed by means of gravimetric and frequency of ocurrence methods, together with the Shannon-Wiener (trophic diversity) and Pianka (trophic overlap) indexes....

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: :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: :journal of rangeland science 2010
f. fahimipoor m. a. zare chahouki m. jafari m. goldansaz z. mohhebi

plant diversity conservation is a main objective in rangelandmanagement. plant diversity is a suitable index for showing the changes ofvegetation in rangelands and has a high correlation with ecosystem parameters.therefore, using this index it is possible to find the changes and manage theecosystem correctly. the current research was performed to determine the speciesdiversity in fashandak rang...

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: :Agroindustrial science 2022

Determination of the abundance and diversity Lepidoptera in Andean Community San Benito, Cajamarca, Peru. Several samplings were carried out, using 500 linear m transect technique, with a monthly frequency throughout 2021, riparian areas surrounding vegetation. The material was dissected studied entomology laboratory National University Trujillo. analyzes species out. 206 individuals registered...

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