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Tropical rainforest in Indonesia
June 1, 2018

Southerly countries are rich in genetic resources. The companies that exploit this natural treasure commercially are very often from the northern, developed world, however. The Nagoya Protocol was created in order to ensure fair use of genetic resources and appropriate compensation.  Read more

An adult female black bean aphid (Aphis fabae) and several of her clonal offspring under attack a by an ovipositing female of the aphid parasitoid Lysiphlebus fabarum. (Photo: Christoph Vorburger, Eawag)
May 28, 2018

Microorganisms that live in symbiosis can sabotage biological methods of pest control by protecting their host from attackers, and host organisms can even pass on these beneficial “passengers” to their offspring. This phenomenon is one which has been paid little attention to date, but thanks to new research findings measures can now be taken to counteract it. Read more

Haplochromis ishmaeli (Photo: Erwin Schraml)
May 9, 2018

Lake Victoria in East Africa is known for its vast biodiversity. But according to a report published recently by the International Union for Conservation of Nature (IUCN), to which Eawag also contributed, many species of fish, molluscs, crustaceans and aquatic plants are currently at risk. Read more

Freshwater amphipods consume leaf litter and other organic material from terrestrial sources. (Photo: Chelsea Little, Eawag)
April 20, 2018

Amphipods play a key role in freshwater ecosystems. In her doctoral research at Eawag, biologist Chelsea Little discovered that invasive amphipod species consume much less leaf litter than native species. Read more

Dendritic branched river network (Photo: Paul Bourke/Google Earth fractals)
March 5, 2018

River networks are dendritic and have a physical direction. The influence of these spatial preconditions on the dispersal of species and the dynamics within metacommunities has been the focus of research for a number of years.  Read more

Sampling invertebrates (Photo: University of Leeds, Lee Brown)
December 18, 2017

River invertebrates react the same way to decreasing glacier cover wherever in the world they are, say scientists who have evaluated more than one million of them in diverse regions with shrinking glaciers, to determine the impact of global environmental change. Their findings are published today in Nature Ecology & Evolution. Read more

DNA sampling from a sediment core in the safe lab (Photo: Peter Penicka, Eawag)
December 11, 2017

The composition of cyanobacterial communities in peri-alpine lakes has become increasingly similar over the past century. Climate warming and a period of eutrophication have favoured in particular potentially toxic species which can adapt rapidly to environmental changes. These are the findings of an Eawag-led study analysing DNA extracted from sediment cores. Read more

Fig. 1: Juvenile whitefish prior to their release from a hatchery into Lake Thun. (Photo: Emanuel Ammon, Ex-Press)
April 21, 2016

In the last century, the natural reproduction of whitefish and Arctic char in several Swiss lakes was adversely affected by high levels of nutrient inputs. So far, stocking measures have been implemented in efforts to support fish populations and maintain yields. The effectiveness of these measures varies according to the particular species and lake. Read more