نتایج جستجو برای: anthropogenic activities

تعداد نتایج: 397759  

J.M Valencia, A Box , A Sureda , S Tejada ,

The variegated scallop (Chlamys varia L.) is an important economic resource in the aquaculture sector in Spain. The aim of the present study was to determine the oxidative status of C. varia, exposed to anthropogenic activities in waters of the Mallorca Island (Western Mediterranean). Specimens were collected from two locations attending to a different degree of human impact. The first station ...

Journal: :Ecological applications : a publication of the Ecological Society of America 2016
Emily J Fusco John T Abatzoglou Jennifer K Balch John T Finn Bethany A Bradley

Humans have a profound effect on fire regimes by increasing the frequency of ignitions. Although ignition is an integral component of understanding and predicting fire, to date fire models have not been able to isolate the ignition location, leading to inconsistent use of anthropogenic ignition proxies. Here, we identified fire ignitions from the Moderate Resolution Imaging Spectrometer (MODIS)...

2018
Ron W. Nielsen

Distributions of anthropogenic signatures (impacts and activities) are mathematically analysed. The aim is to understand the Anthropocene and to see whether anthropogenic signatures could be used to determine its beginning. A total of 23 signatures were analysed and results are presented in 31 diagrams. Some of these signatures contain undistinguishable natural components but most of them are o...

2017
Leandro Schlemmer Brasil Thiago Bernardi Vieira José Max Barbosa de Oliveira-Junior Karina Dias-Silva Leandro Juen

An important aspect of conservation is to understand the founding elements and characteristics of metacommunities in natural environments, and the consequences of anthropogenic disturbance on these patterns. In natural Amazonian environments, the interfluves of the major rivers play an important role in the formation of areas of endemism through the historical isolation of species and the speci...

2017
Yaodong He Biswarup Sen Shuangyan Zhou Ningdong Xie Yongfeng Zhang Jianle Zhang Guangyi Wang

Qinhuangdao coastal waters in northern China are heavily impacted by anthropogenic and natural activities, and we anticipate a direct influence of the impact on the bacterioplankton abundance and diversity inhabiting the adjacent coastal areas. To ascertain the anthropogenic influences, we first evaluated the seasonal abundance patterns and diversity of bacterioplankton in the coastal areas wit...

2004
John Hildebrand

Anthropogenic sound is created in the ocean both purposefully and unintentionally. The result is noise pollution that is high-intensity and acute, as well as lower-level and chronic. The locations of noise pollution are along well-traveled paths in the sea and particularly encompass coastal and continental shelf waters. Increased use of the sea for commercial shipping, geophysical exploration, ...

Journal: :Environmental pollution 2011
A Arruti I Fernández-Olmo A Irabien

Air pollution by particulate matter is well linked with anthropogenic activities; the global economic crisis that broke out in the last year may be a proper indicator of this close relationship. Some economic indicators show the regional effects of the crisis on the Cantabria Region. The present work aims to evaluate the impact of the economic crisis on PM10 levels and composition at the major ...

2013
Hafizan Juahir Munirah Abdul Zali Ananthy Retnam

Juru River is named as one of polluted river in Malaysia by Department of Environment (DOE) Malaysia up till recent times. The pollution loadings of this river basin come from various point and non-point sources. This study reveals that the water quality of Juru River is very much affected by the industrial activities in this locality area. The principle component analysis (PCA) display that th...

2001
Stephen E. Schwartz Peter R. Buseck

Most considerations of global climate change caused by human activities, including the Kyoto convention (1), have focused on the warming influence of greenhouse gases (2). However, aerosols are another important atmospheric constituent that influences climate and has been affected by human activities (3, 4). Aerosol particles increase scattering and absorption of shortwave (solar) radiation (5,...

2012
Shancen Zhao Pingping Zheng Shanshan Dong Xiangjiang Zhan Qi Wu Xiaosen Guo Yibo Hu Weiming He

Nature GeNetics aDVaNCE ONLINE PUBLICaTION The panda lineage dates back to the late Miocene and ultimately leads to only one extant species, the giant panda (Ailuropoda melanoleuca). Although global climate change and anthropogenic disturbances are recognized to shape animal population demography2,3 their contribution to panda population dynamics remains largely unknown. We sequenced the whole ...

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