نتایج جستجو برای: anthropogenic activity

تعداد نتایج: 1156982  

H.M. Khan, M. Ismail, M.A. Zia,

Background: Radioactive contamination in soil arises due to various activities of human being, such as nuclear energy generation, use of radioisotopes in industrial applications, science, technology, medicine and release of radiation in nuclear weapon tests. Materials and Methods: The two districts (Peshawar and Nowshera) of Khyber Pakhtunkhwa, Pakistan were selected for the study of anthropoge...

A. Begum, A. Islam, J. Ferdous,

Background: The concentrations and distributions of natural and anthropogenic radioactive materials in soils of the site of Rooppur Nuclear Power Plant (RNPP) were investigated with the aim of evaluating the environmental radioactivity and radiation hazard. Materials and Methods: Soil samples were collected from 40 locations in and around the proposed site of Rooppur Power Plant and determined ...

Journal: :Hormones and behavior 2009
Page E Van Meter Jeffrey A French Stephanie M Dloniak Heather E Watts Joseph M Kolowski Kay E Holekamp

Our aim was to identify natural and anthropogenic influences on the stress physiology of large African carnivores, using wild spotted hyenas (Crocuta crocuta) as model animals. With both longitudinal data from a single social group, and cross-sectional data from multiple groups, we used fecal glucocorticoids (fGC) to examine potential stressors among spotted hyenas. Longitudinal data from adult...

2015
John P. Y. Arnould Jacquomo Monk Daniel Ierodiaconou Mark A. Hindell Jayson Semmens Andrew J. Hoskins Daniel P. Costa Kyler Abernathy Greg J. Marshall Daniel E Crocker

Human-induced changes to habitats can have deleterious effects on many species that occupy them. However, some species can adapt and even benefit from such modifications. Artificial reefs have long been used to provide habitat for invertebrate communities and promote local fish populations. With the increasing demand for energy resources within ocean systems, there has been an expansion of infr...

2015
Hongmei Jing Xiaomin Xia Hongbin Liu Zhi Zhou Chen Wu Sanjay Nagarajan

Diazotrophs in the mangrove rhizosphere play a major role in providing new nitrogen to the mangrove ecosystem and their composition and activity are strongly influenced by anthropogenic activity and ecological conditions. In this study, the diversity of the diazotroph communities in the rhizosphere sediment of five tropical mangrove sites with different levels of pollution along the north and s...

Journal: :Scientific reports 2016
Chao Peng Xinguo Zhao Saixi Liu Wei Shi Yu Han Cheng Guo Jingang Jiang Haibo Wan Tiedong Shen Guangxu Liu

Anthropogenic sound has increased significantly in the past decade. However, only a few studies to date have investigated its effects on marine bivalves, with little known about the underlying physiological and molecular mechanisms. In the present study, the effects of different types, frequencies, and intensities of anthropogenic sounds on the digging behavior of razor clams (Sinonovacula cons...

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