Advertisements

About FRN

January 14, 2019

0

Freshwater Research News (FRN) is a free newsletter designed to increase understanding of aquatic issues by bringing recently-published research findings to a general audience. FRN draws on articles from over 60 scientific journals to produce brief, easy-to read summaries of the background and significance of freshwater research projects from around the world. The subject range […]

Posted in: Uncategorized

How rivers befriend seabirds

January 14, 2019

0

Where rivers flow into the ocean, the density fronts between fresh and salt water masses help to concentrate zooplankton and larval fish, making them more available to predators.  For example, freshwater discharge from the Columbia River creates a large brackish plume that can stretch for hundreds of kilometres along the North American coast, and nutrient […]

A landmark study

January 14, 2019

0

Animals use a range of strategies to return to refuge areas, foraging patches and mating sites, but little is known about the ways that navigation is affected by different types of sensory information.  Zoologists in Oxford, U.K. tested the ability of elephantfish (Gnathonemus petersii) – which are capable of electrolocation as well as visual detection […]

Posted in: behaviour, fish

Aquatic plants neutralize insecticides

January 14, 2019

0

sThere’s increasing evidence that submerged aquatic plants can dramatically reduce concentrations of polluting insecticides in freshwater systems and thus mitigate the impacts of these chemicals on aquatic animals.  They are thought to do this in at least two ways.  The best known method is by binding hydrophobic pesticides onto and into plant tissues, and a […]

Understanding how fish benefit from river restoration

January 14, 2019

0

Although relationships between fish traits and environmental factors are well known, there have been few attempts to use fish traits to interpret the outcomes of stream restoration projects.  German scientists set out to do this by analyzing  data from a tributary of the Rhine River, which had a long history of channelization, bank fixation, riparian […]

Recognising the biodiversity value of ponds

January 14, 2019

0

Although pond habitats have been relatively neglected by conservationists, several studies have shown that ponds can contribute more to regional biodiversity than running waters.  Because they are isolated, small in size and often poorly protected by conservation programmes, pond ecosystems are highly vulnerable to environmental threats such as those presented by urbanisation.  To help provide […]

Turbulent times for freshwater plants

January 14, 2019

0

Water movement is one of the most important factors affecting the distribution of aquatic plants, and has a beneficial or detrimental impact  depending on the magnitude of flow.  Japanese researchers compared the effects of steady flow and turbulence on three plant species with different types of morphology: western waterweed (Elodea nuttallii) with whorled leaves, curly-leaved […]