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Outbreaks of infectious diseases among freshwater fish damage the aquaculture industry. A technique for detecting pathogens in environmental water samples has recently been developed. In the present work, the monitoring of pathogenic viruses in Lake Erhai and Lake Dianchi (Yunnan, China) was performed. Yunnan possesses a rich diversity of cyprinid fish, and the aquaculture of freshwater fish is a...
Faithfully tracing sources of sediment and then quantifying the flux of each source are the first-order basis for reconstructing paleoclimate and paleoenvironment using lake sediments. The budget of various sources contributing to lake sediment in Lake Qinghai, the largest lake on the Tibetan Plateau, is controversial. In the previous study, the flux of the dust deposition to the modern lake sediment...
Ecological thresholds represent the point at which an ecological process or parameter changes abruptly in response to relatively small changes in a driving force. Although the non-linear nature of ecological dynamics is widely recognised, the concept of threshold responses has only recently received the warranted attention in conservation and management. In this short review we synthesise current...
Seasonally changing mechanisms affect the concentrations of dissolved inorganic nitrogen and soluble reactive phosphorus, which differ between the stands of different macrophyte life forms and open water in a eutrophic lake. Macrophytes that take nutrients up for their growth also shelter sediments from resuspension that brings nutrients back to the water and affect denitrification, which removes...
Mediterranean temporary ponds in Greece have been neglected, and only recently has attention been drawn to their protection and conservation. In this study, the macroinvertebrate fauna of the Mediterranean temporary ponds of western Crete was examined for the first time. In particular, the seasonal and spatial patterns of macroinvertebrate communities were assessed along with the spatio-temporal variation...
Dissolved organic matter (DOM) in river water was studied to understand the transport behavior of DOM in a small watershed with forest and paddy fields. Field experiments were conducted under normal flow conditions in the Kumaki River, which is located in the central part of the Noto Peninsula in Japan, during the period 2009–2010. The concentrations and structural properties of fulvic acid-like components,...
Concentrations of dissolved acidic polysaccharides (dAPS) were investigated at four stations zones along Meiliang Bay from the river mouths, to the inner bay, to the outer bay, and further to the lake center in the northern Lake Taihu during the Microcystis blooming periods from June to October 2012. The concentrations of dAPS displayed a decreasing trend from the lakeshore to the open areas. Concentrations...
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