About FRN

September 25, 2017

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

Restoration and invertebrates: Build it and at least some of them will come

September 25, 2017

0

It’s commonly assumed that the biodiversity of a disturbed ecosystem can be improved by restoring its original physical and chemical conditions. According to this “Field of Dreams” view (“build it and they will come”), ecosystem recovery occurs through the recolonization activities of lost species.  While a lot of river restoration is founded on Field of […]

Restoration and invertebrates: Reappraising stream condition indicators

September 25, 2017

0

In degraded rivers and stream systems, the replanting of riparian vegetation is a common restoration activity, partly because increases in shading, nutrient interception and litter fall are expected to provide food and habitat benefits for aquatic communities. Changed habitat conditions should be reflected in indices of stream condition, such as those based on macroinvertebrate richness. […]

Ironing out harmful algal blooms

September 25, 2017

0

An understanding of how iron affects the supply of nutrients in aquatic systems may open the door to better success in managing harmful algal blooms. In highly productive lakes, the release of phosphorus stored in the bottom sediment can encourage bloom development, but nutrient release is retarded in the presence of iron, which precipitates phosphorus […]

Lateral thinking on riverbank erosion

September 25, 2017

0

Although bank erosion is often thought of as problem that has to be addressed through engineered stabilization, the lateral migration of meandering streams is a natural mechanism that redistributes channel sediment and maintains habitat diversity. New riparian zones are formed as sediment is deposited on the inside of bends and colonised by vegetation.  Meandering creates […]

Mosquitofish threaten frogs

September 25, 2017

0

The mosquitofish, Gambusia holbrooki, is one of the most invasive freshwater fish species in the world.  Although it’s been widely introduced for mosquito control, it has a broad diet that includes algae, higher plants, detritus, invertebrates and fish.  As a result, the species has negative predatory and competitive effects on native fish.   Although declines in […]

Freshwater protected areas: time to get serious

September 25, 2017

0

Increasingly, the declaration of freshwater protected areas is being promoted as a way of helping to stem the continuing decline in global freshwater biodiversity. While calls for freshwater protected areas have been met with limited interest in the past, this situation is changing as the philosophy of conservation evolves.    Since the 1960s, conservation has passed […]