نتایج جستجو برای: anthropogenic activity

تعداد نتایج: 1156982  

Journal: :Palgrave studies in maritime politics and security 2023

Abstract Humans depend on oceans and seas’ marine ecosystems for important valuable goods services, but human use has also altered the environment through direct indirect means. Land-based ocean-based activities vary in their intensity of impact environmental conditions spatial distribution across scape. Since opening Suez Canal, such a human-made change needs to be understood quantified able e...

Journal: :The Journal of the Acoustical Society of America 2005
Y Samuel S J Morreale C W Clark C H Greene M E Richmond

Underwater sound was recorded in one of the major coastal foraging areas for juvenile sea turtles in the Peconic Bay Estuary system in Long Island, New York. The recording season of the underwater environment coincided with the sea turtle activity season in an inshore area where there is considerable boating and recreational activity, especially during the summer between Independence Day and La...

2012
Joern P Scharsack Hannah Schweyen Alexander M Schmidt Janine Dittmar Thorsten BH Reusch Joachim Kurtz

In industrialized and/or agriculturally used landscapes, inhabiting species are exposed to a variety of anthropogenic changes in their environments. Genetic diversity may be reduced if populations encounter founder events, bottlenecks, or isolation. Conversely, genetic diversity may increase if populations adapt to changes in selective regimes in newly created habitats. With the present study, ...

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: :Remote Sensing 2015
Ya Liu Yan Li Shuangcheng Li Safa Motesharrei

Changes in vegetation activity are driven by multiple natural and anthropogenic factors, which can be reflected by Normalized Difference Vegetation Index (NDVI) derived from satellites. In this paper, NDVI trends from 1982 to 2012 are first estimated by the Theil–Sen median slope method to explore their spatial and temporal patterns. Then, the impact of climate variables and human activity on t...

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