نتایج جستجو برای: species richness and abundance of soil invertebrates

تعداد نتایج: 24092366  

2012
M. G. Sanal Kumar

Konni Forest Division, a part of Southern Western Ghats, on the bank of River Achencoil carries long history of man-forest interface and harbours rich floral diversity supporting three different eco regions. The present study aimed to assess the floral diversity of Konni Forest Division and its distribution in relation to various edaphic factors. Forest types are identified by reconnaissance su...

Journal: :مرتع و آبخیزداری 0
جواد معتمدی (ترکان) استادیار گروه مرتع و آبخیزداری، دانشکده منابع طبیعی دانشگاه ارومیه اسماعیل شیدای کرکج دانشجوی دکتری علوم مرتع دانشگاه علوم کشاورزی و منابع طبیعی گرگان

species diversity is one of the important characteristics shows rangeland ecosystems changes, which isalready under effects of management practices. thus, this research was conducted to study speciesdiversity variation and assess suitable distributive abundance model in three rangeland sites in westazerbaijan. these sites were almost similar in environmental properties and differ in view point ...

This study was conducted to identify and classify the lichens; determine the diversity index and richness of lichens. A total of 36 species belonging to six genera under three families was identified. Lichen species were mostly found at moderate high altitudinal range with an elevation of 1,131 meters above sea level and open areas where they received adequate sunlight with high moisture and hu...

ژورنال: مرتع 2023

The extent of rangeland is one of the most important characteristics of organic carbon uptake and storage in soil and plants. The present study investigates the indices of plant diversity and organic carbon storage in mountain pastures under grazing and 10-year enclosure in Asadabad. The rangeland is approximately 100 hectares and its rangelands are in good condition and are in the 2S class in ...

2018
Jean-Charles Leclerc Frédérique Viard

Coastal human-made structures, such as marinas and harbors, are expanding worldwide. Species assemblages described from these artificial habitats are novel relative to natural reefs, particularly in terms of the abundance of nonindigenous species (NIS). Although these fouling assemblages are clearly distinctive, the ecosystem functioning and species interactions taking place there are little un...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شاهد - دانشکده علوم پایه 1388

introduction acetic acid bacteria are large group of obligate aerobic gram negative bacteria with the ability to oxidize ethanol to acetic acid (1). they are widely distributed in natural habitats and classified in family acetobacteraceae. members of this family are useful in industrial production of vinegar(2). acetic acid bacteria (aab) can use substrates as glucose, ethanol, lactate or glyc...

Journal: :جنگل و فرآورده های چوب 0
اعظم نورایی کارشناس ارشد جنگل داری، دانشکدۀ منابع طبیعی، دانشگاه تربیت مدرس، نور، ایران امید اسماعیل زاده استادیار گروه جنگل داری، دانشکدۀ منابع طبیعی، دانشگاه تربیت مدرس، نور، ایران سید غلامعلی جلالی دانشیار گروه جنگل داری، دانشکدۀ منابع طبیعی، دانشگاه تربیت مدرس، نور، ایران

the aim of this research is to classification of soil seed bank in populus caspica protected area. the study of above ground vegetation and soil seed bank were carried out with braun-blanquet and seedling emergence method respectively. results showed that size of soil seed bank in upper layer (713 seeds per m2) were significantly lower than depth layer (1163 per m2) but species richness from 42...

Journal: رستنیها 2019

Little attention has been devoted to lichens of Kerman province (Iran). This study was conducted to identify lichens in the Kuh-Asiab protected area of Kubanan located in the northernmost part of Kerman province. In this study, eight sites were chosen in the area. Sampling was carried out according to Random method. Height data were obtained from each site along with the abundance of lichen spe...

2013
Wei Yang Yong Zheng Cheng Gao Xinhua He Qiong Ding Yongchan Kim Yichao Rui Shiping Wang Liang-Dong Guo

Arbuscular mycorrhizal (AM) fungi form symbiotic associations with most plant species in terrestrial ecosystems, and are affected by environmental variations. To reveal the impact of disturbance on an AM fungal community under future global warming, we examined the abundance and community composition of AM fungi in both soil and mixed roots in an alpine meadow on the Qinghai-Tibetan Plateau, Ch...

Journal: :Tanzania journal of health research 2014
Joel L Meliyo Didas N Kimaro Balthazar M Msanya Loth S Mulungu Proches Hieronimo Nganga I Kihupi Hubert Gulinck Jozef A Deckers

Small mammals particularly rodents, are considered the primary natural hosts of plague. Literature suggests that plague persistence in natural foci has a root cause in soils. The objective of this study was to investigate the relationship between on the one hand landforms and associated soil properties, and on the other hand small mammals and fleas in West Usambara Mountains in Tanzania, a plag...

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