Author Archives: Jan Macher

New project: metabarcoding and eDNA to assess impacts of multiple stressors on species communities in New Zealand rivers

We are starting a new project!

Together with our collaborators from the University of Otago, Florian and Jan will use metabarcoding and eDNA techniques to assess the impacts of multiple anthropogenic stressors on species communities in New Zealand rivers. Stay tuned for updates!

NZSamples2   NZSamples4 NZSamples3   NZSamples

New article in the Barcode Bulletin

We just published a short article in the Barcode Bulletin.

In the march issue (pages 10-12), Florian and Jan write about how different cryptic Deleatidium mayfly species from New Zealand show strongly different responses to anthropogenic stressors in the stream and the cosequences this has for ecosystem assessments.

http://ibol.org/wp-content/uploads/2016/03/iBOL-Barcode-Bulletin-Mar-2016-Reduced.pdf

New project: eDNA of the “Emscher sculpin”

We are starting a new project:

Gunnar Jacobs (who is also working for Emschergenossenschaft, the local water board) starts his PhD thesis.  He will investigate the occurrence, distribution and dispersal ability of the “Emscher sculpin” (Cottus cf. rhenanus) in the river Emscher and its tributaries.

The Emscher sculpin is a fish which survived the major industrial pollution of rivers in the Emscher catchment during the last 100 years in the upper reaches of a few streams. Specimens from these relic populations are now used to repopulate ecologically restored streams and rivers in the region.

Gunnar will use eDNA (environmental DNA) to study the occurrence and distribution of the Emscher sculpin and how fast it can disperse and repopulate streams after the reintroduction. Using eDNA means that that Gunnar will filter water from the stream and analyze the sculpin DNA in it, which also means that he does not need to catch the fishes. Gunnar’s work will greatly help to understand the Emscher sculpin and the Emscher ecosystem and to subsequently make protection of the ecosystem easier.

Welcome, Gunnar! We are looking forward to the exciting project!

 

Cottus IMG_3417

New paper: Drastic underestimation of amphipod biodiversity in the endangered Irano-Anatolian and Caucasus biodiversity hotspots

Together with colleagues from the University of Tehran, we just published a paper on the diversity of amphipods in the highly endangered Irano-Anatolian and Caucasus biodiversity hotspots. So far, only five morphospecies had been known from the streams and rivers of these regions. By using molecular techniques, we could identify 42 mostly unknown species, showing that also the scarcely studied freshwater ecosystems of the region harbour a great biodiversity and deserve protection.

Scientific Reports: Drastic underestimation of amphipod biodiversity in the endangered Irano-Anatolian and Caucasus biodiversity hotspots

Florian on the radio

Florian was recently interviewed by Radio Leonardo. He talked about how new molecular tools can help to revolutionize and improve ecological water quality assessment of streams and rivers.

Link to the interview (podcast 25.02.2015, Florian’s part starts at minute 25):
http://www1.wdr.de/mediathek/audio/wdr5/wdr5-leonardo/leonardo302.html