Highlights

BONUS and HELCOM advanced the environmental agenda at key conference, 6 November, Copenhagen > read more

Group photo small 6.11. Minna Frii, BONUS EEIG
Photo: Minna Frii, BONUS EEIG
BONUS in Brief November 2018 out!

New BONUS SYNTHESIS projects, the Baltic and North Sea Support and Coordination Action, HELCOM, OSPAR, ICES, JPI Oceans and much more! Download your personal copy!


News from projects

30.10.2018 Taking Their Vitamins: BONUS-BLUEPRINT Researchers Find Bacterioplankton Rely on Environmental Vitamin B1 Rather Than Making Their Own

In a new publication in PNAS, researchers from the BONUS-BLUEPRINT project found out that more Baltic Sea bacterioplankton utilize vitamin B1 or B1 precursors from their environment than synthesize their own. The researchers also found that B1 availability can directly limit bacterioplankton growth, which could have larger impacts on aquatic microbial food webs, as well as energy and nutrient exchange.

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BONUS MIRACLE tools presented at VISweek and Nordic Climate Adaptation Conference

Tools developed to support joint learning processes and interactive decision making were presented in two conferences last week.

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Project blogs

12.09.2018 12:19New COCOA publication! (Sources & Sinks: A Tale of Coastal Biogeochemistry - BONUS COCOA)

A new study from the BONUS COCOA project has recently been published:


Irma Vybernaite-Lubiene (Marine Research Institute, Klaipeda University, Lithuania) and co-workers intensively sampled the Nemunas River just before the Curonian Lagoon, in order to calculate monthly loads of nutrients generated by one of the main point pollution sources of the Baltic Sea. During 2012–2016, they patiently created an extensive data set, including all forms of nitrogen (N), silicate (Si) and phosphorous (P), to investigate seasonal and annual nutrient variations with respect to discharge, climatic features, and historical trends.
Irma_COCOA

Results show that nutrient loads varied yearly by up to 50% and their concentrations underwent strong seasonality, with N and Si limitation during summer. Changes in agricultural practices resulted in similar N export from the river watershed compared to historical data (1986–2002), while improvements in sewage treatment led to a ~60% decrease of P loads.
Irma concludes that further P reductions are needed to avoid unbalanced dissolved inorganic nitrogen and phosphorus (DIN:DIP~10) ecological stoichiometry in summer, which may stimulate undesired cyanobacterial blooms.


These data are an important contribution to the scattered available information on the largest nutrient source to the Curonian Lagoon and add another piece to the puzzle explaining the links among watersheds and downstream transitional aquatic ecosystems suffering non-linear responses and frequent collapse events (…and furthermore, they allow Irma to dance her PhD in a couple of months, well done and fingers crossed!).



You can read the full story here:

Vybernaite-Lubiene I, Zilius M, Saltyte-Vaisiauske L, Bartoli M (2018) Recent Trends (2012–2016) of N, Si, and P Export from the Nemunas River Watershed: Loads, Unbalanced Stoichiometry, and Threats for Downstream Aquatic Ecosystems. Water10(9),1178. www.mdpi.com/2073-4441/10/9/1178

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Events

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In horizon: The third BONUS symposium on sustainable ecosystem governance in March 2018 etc...

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Young scientists

Hugh Kearns at YSC2017
The sixth BONUS Young Scientist Club convened on 12 June 2017 at the 11th Baltic Sea Science Congress in Rostock, Germany. 

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