Content:
Regional Activities:
RADOST Annual Conference 2011 in Travemünde;
Research at Anchor;
Stakeholder Analysis;
RADOST-Workshop “Coastal Tourism”;
BSSSC/BALTEX Conference “Adaptation to Climate Change
on the Regional Level”;
Workshop “Baltic Sea and Baltic Sea Coast between Climate Change and Climate Adaptation”;
Mussel Workshop at the Institute for Baltic Sea Research Warnemünde;
International Activities:
Climate Change, the Science Policy Interface and Coastal Zone Management;
Workshops on Regional Availability of Climate Knowledge in the Baltic Sea Region
Over the last decades, Fucus vesiculosus, an ecologically important macroalga in the German Baltic Sea, has shown a massive retreat from the deeper zones of its former distribution presumably due to low light co-acting with other potential stressors such as high temperature, fouling, and grazing. In shallow water F. vesiculosus may be exposed to high water temperatures during summer seasons. Intensity and frequency of heat waves are expected to increase due to climate change which could potentially affect all fucoid life stages. Early life stage processes (fertilization, germination) are often considered particularly sensitive to stress. If the mortality caused by a first heat wave in a genetically diverse population selects for stress resistance, we would expect the survivors to be less sensitive to a second heat wave or possibly even to other stressors like feeding pressure.
In the present study, the mortality of early post-settlement stages of F. vesiculosus under thermal stress and the sensitivity of survived recruits against a proximate stressor (feeding pressure, second heat wave) were analysed by laboratory experiments. The mortality of early fucoid life stages at 25°C, compared to their mortality at 15°C was significantly higher. Regrettably, the ensuing assessment of feeding impact by Idotea baltica and Hydrobia ulvae on the surviving germlings could not be analysed since the two consumer species unexpectedly avoided feeding on the young stages of F. vesiculosus. During the second thermal stress experiment fucoid offspring which was genetically preselected by high temperature (first heat wave: 25°C) differed not significantly in sensitivity from fucoid offspring without prior stress.
A reestablishment of Fucus vesiculosus where it is locally vanished would be an indicator for improved water quality. Thus the Agency for Agriculture, Environment and Rural Areas of Schleswig - Holstein (LLUR) is thinking about opportunities to resettle F. vesiculosus. On behalf of RADOST project, the tolerance of early fucoid life stages towards thermal stress was analysed and after four days of thermal treatment a high percentage of the treated fucoid offspring survived. It might be that inside species genotypes exist which are less sensitive against future environmental changes.
Over the last decades, Fucus vesiculosus, an ecologically important macroalga in the German Baltic Sea, has shown a massive retreat from the deeper zones of its former distribution presumably due to low light co-acting with other potential stressors such as high temperature, fouling, and grazing. Global warming may increase abiotic as well as biotic pressures and exacerbate environmental conditions in coastal ecosystems. The present study focussed on the effects of single or subsequently combined stressors on survival and palatability of juvenile F. vesiculosus. Fucoid offspring were exposed to high temperature and/ or feeding pressure. Feeding preference of Idotea baltica was quantified in a pellet assay calculated as an odds ratio. High temperature significantly impaired the survival of juvenile fucoids. Neither single nor combined stress considerably influenced the feeding preference of I. baltica. Surprisingly I. baltica strictly avoided pellets with juvenile F. vesiculosus compared to adult F. vesiculosus. Avoidance tended to be less pronounced in juvenile fucoids previously stressed by high temperature. Obviously grazing does not induce anti-herbivore defence, but rather the young plants appeared constitutively well-protected against isopod feeding. These results contradict the prevailing opinion that juvenile F. vesiculosus is more susceptible to herbivore grazing than adult F. vesiculosus.
Content:
Regional Activities:
“Lust op dat Meer:” Conclusion and Challenges Ahead;
Quo Vadis – Baltic Sea Coast?
The Sense behind Measurement;
National Activities:
KLIMZUG Status Conference;
New Funding Opportunity for Adaptation Measures;
Communication with Public Agencies and Offices;
International Activities:
Workshop Series: “Climate Knowledge for Regional Coastal
Stakeholders in the Eastern Baltic Sea Region”;
Mussel Farming in the Baltic Sea;
Publications:
Second RADOST Annual Report;
A survey of the perceptions of regional political decision makers
Content:
Regional Activities:
Workshop: Coastal Change as a Challenge for Society, Culture, and Spatial Planning;
RADOST on Tour: Baltic Sea Coast 2100 – On the Way to Regional Climate Adaptation;
Monitoring the Environmental Conditions in the Nearshore Area;
National Activities:
Outstanding Climate Adaptation;
International Activities:
RADOST in Exchange with Coastal Planners in the USA;
Short Film on Climate Change Adaptation in Germany, Poland,
and the Baltic States;
Publications:
Analyses of the Perception of Climate Change Along the
German Baltic Sea Coast;
RADOST Studies on Artificial Reefs
Content:
Regional Activities:
RADOST Event at the Darßer Arche;
Save the Date: RADOST Final Conference;
Local Adaptation Strategies for Schleswig-Holstein;
Bay of Kiel Climate Alliance Supports Adaptation Strategy
of the City of Kiel;
“Nothing Stays the Same” – RADOST at the BWK Federal Congress;
Concordance Maps in the North German Climate Atlas;
International Activities:
Adaptation to Climate Change in Mountain & Coastal Areas;
Publications:
„Die Zeit“ Reports on RADOST;
4th RADOST Annual Report;
Adaptation Strategy for the Ports of Lübeck
Content:
Regional Activities:
Looking Back on Five Years of RADOST;
RADOST Final Conference Takes Stock, Looks Ahead;
Looking Back: Comments on RADOST;
Bay of Kiel Climate Alliance Seeks to Make the Region a Climate Conscious Vacation Destination;
What’s Next after RADOST?
New Web Tool: “Northern German Climate Monitor”;
International Activities:
RADOST at the European Maritime Day;
Contributions wanted for ECCA Conference 2015;
Publications:
Communicating Adaptation to Regional Climate Change Impacts;
New RADOST reports;
Third Special Edition of “Coastal & Marine“
Content:
Regional Activities:
Science on Tour along the Baltic Sea Coast;
Climate Pavilion Schönberg Inaugurated;
New RADOST Partner: Hamburg University of Technology;
First Organic Mussels from Kiel;
International Activities:
Climate Change Impacts in the Baltic Sea Region: Assessment Report Provides Opportunity for Discussion;
Bottom-up Climate Adaptation Strategies towards a Sustainable Europe;
Transatlantic Exchange of Adaptation Measures;
Publications