نتایج جستجو برای: international inland waters
تعداد نتایج: 353758 فیلتر نتایج به سال:
Inland waters are important ecosystems for both their biodiversity and the services they provide to humans. Monitoring components is essential improve knowledge of structure functions these assess health status. [...]
The Ocean and Land Color Imager (OLCI) on the Sentinel-3A satellite, which was launched by the European Space Agency in 2016, is a new-generation water color sensor with a spatial resolution of 300 m and 21 bands in the range of 400–1020 nm. The OLCI is important to the expansion of remote sensing monitoring of inland waters using water color satellite data. In this study, we developed a dual b...
AIM An often-invoked benefit of high biodiversity is the provision of ecosystem services. However, evidence for this is largely based on data from small-scale experimental studies of relationships between biodiversity and ecosystem function that may have little relevance to real-world systems. Here, large-scale biodiversity datasets are used to test the relationship between the yield of inland ...
The influence of sea surface temperature (SST) on atmospheric processes over the open ocean has been well documented. However, atmospheric responses to SST in coastal waters are poorly understood. Oceanic stratification (and consequently, SST) in coastal waters largely depends on the fortnightly spring-neap tidal cycle, because of variations in vertical tidal mixing. Here we investigate how cha...
Two-band algorithms that use the ratio of reflectances at 672 and 704 nm have already proved successful for chlorophyll a retrieval in a range of coastal and inland waters. An analysis of the effect of reflectance measurement errors on such algorithms is made. It provides important indications of the range of validity of these algorithms and motivates the development of an entirely new type of ...
In this Focus article, the authors ask a seemingly simple question: Are harmful algal blooms (HABs) becoming the greatest inland water quality threat to public health and aquatic ecosystems? When HAB events require restrictions on fisheries, recreation, and drinking water uses of inland water bodies significant economic consequences result. Unfortunately, the magnitude, frequency, and duration ...
Predictions of the geographic spread of introduced species are often limited by a lack of data on their mechanisms of dispersal. We interviewed boaters and inspected boating equipment at public boat launches on Lake St. Clair (Michigan, USA) to assess the potential for the zebra mussel, an invasive bivalve, to be dispersed overland to inland waters by transient recreational boating activities. ...
Fresh waters are among the most seriously threatened ecosystems on the planet, having suffered intense human impacts over the past century (SALA et al. 2000, COWX & COLLARESPEREIRA 2002, DUDGEON et al. 2005). In their direct comparison of rates of species loss in freshwater vs. terrestrial ecosystems, RICCIARDI & RASMUSSEN (1999) projected a future extinction rate of 4% per decade for North Ame...
888 PERSPECTIVES as much terrestrial carbon is received by inland waters as reaches the world's oceans (11). Calcareous catchments also release considerable carbon to lakes as bicarbonate and carbonate. In total, inland waters may bury about four times as much carbon as do the oceans (10). Much of the organic carbon received by lakes is mineralized and emitted to the atmosphere as carbon dioxid...
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