نتایج جستجو برای: composite riverbanks
تعداد نتایج: 121846 فیلتر نتایج به سال:
The study of structural masonry joined to geohydrological hazards in cultural heritage represents a multidisciplinary theme, which requires consideration several aspects, among them the characterization materials used. In this paper, first complete chemical, minero-petrographic, and physico-mechanical core samples taken from two Florence riverbanks (Lungarno degli Acciaiuoli Lungarno delle Graz...
Biting midges of the genus Culicoides (Diptera: Ceratopogonidae) were collected during the summer of 2007 at the Greenville and Riverbanks Zoos in South Carolina with Centers for Disease Control and Prevention (CDC) traps equipped with ultraviolet or incandescent lights and baited with carbon dioxide. Sixteen species of Culicoides were collected, four of which represented more than 80%. They we...
In the actual context of global change and biodiversity depletion, soil bioengineering represents an important tool for riparian ecosystem restoration species conservation. Various techniques have already been implemented, but their adaptation still must be carried out in Caribbean Islands hotspots, where suitable remains unknown. Nitrogen-fixing legumes are particularly relevant ecological div...
A filtering algorithm is proposed that accurately extracts ground data from airborne light detection and ranging (LiDAR) measurements and generates an estimated digital terrain model (DTM). The proposed algorithm utilizes planar surface features and connectivity with locally lowest points to improve the extraction of ground points (GPs). A slope parameter used in the proposed algorithm is updat...
There are four alder species native to Europe: the common alder (Alnus glutinosa), the grey alder (A. incana), the Italian alder (A. cordata) and the green alder (A. viridis). In general, members of the genus Alnus are pioneer species, able to colonise bare, open ground rapidly and with a great ability to tolerate wet sites. The roots have specialised nodules which fix atmospheric nitrogen as a...
Rediscovery of the endangered species Harpalus flavescens (Coleoptera: Carabidae) in the Loire River
1. The Loire River is one of the last European large rivers with important sediment dynamics and numerous sandbanks. The extraction of sediment from the riverbed during decades and the construction of levees for flood prevention have strongly affected and shaped the biodiversity of the Loire River. 2. Many species from pioneer riverbanks have been impacted with particular consequences for psamm...
Intensive anthropogenic disturbances have affected the channel of the middle Yangtze River since the 1950s. This paper selects the Jianli reach as an example to examine human impact on channel change in the middle Yangtze River. 1:100,000 channel distribution maps from 1951, 1961 and 1975 and 1:25,000 navigation charts from 1981 and 1997 were employed to reconstruct channel change in the study ...
Abstract. The Kapuas River delta is a unique estuary system on the western coast of island Borneo, Indonesia. Its hydrodynamics are driven by an interplay between storm surges, tides, and river discharges. These interactions likely to be exacerbated global warming, leading more frequent compound flooding in area. mechanisms driving events remain, however, poorly known. Here we attempt fill this...
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