Feldstudie
- Effects of sequential stressors on survival of young life stages of the bladder wrack Fucus vesiculosus L. (2014)
- 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.
- The meaning of genetic diversity on the example of the bladder wrack Fucus vesiculosus L. Part II: ‘Development of different fucoid genotypes in different water depths’ (2012)
- 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.
- Küsten und Klimawandel in den Augen von Touristen : Eine Wahrnehmungsanalyse an der deutschen Ostsee (2011)
- Analyse einer unter Touristen erfolgten Umfrage in Hinblick auf Erkenntnisse für die Auswahl geeigneter Anpassungsmaßnahmen an regionale Klimawandelauswirkungen sowie die strategische Ausrichtung der regionalen touristischen Entwicklung.
- Versetzungsexperimente mit Blasentang (Fucus vesiculosus) in der Kieler und Lübecker Bucht (2014)
- Innerhalb des RADOST-Anwendungsprojektes „Qualitätskomponenten zur Wasserrahmenrichtlinie – Bestandsunterstützung Seegras und Blasentang“ wurden von Coastal Research and Management (CRM) im Unterauftrag des Landesamtes für Landwirtschaft, Umwelt und ländliche Räume des Landes Schleswig-Holstein Untersuchungen zum Bestandsschutz und zum Wiederansiedlungspotential des Blasentangs durchgeführt. Aufbauend auf Vorarbeiten von CRM wurden die Möglichkeiten des gezielten Verpflanzens und damit die Wiederbesiedlung eines potentiellen Lebensraumes des heimischen Blasentangs auf wissenschaftlicher Basis untersucht.
- Georeferenzierte Digitalfotografie zur objektiven und reproduzierbaren Quantifizierung von Rastvögeln auf See (2011)
- Pilotstudie: Vergleich einer herkömmlichen Flugzeugtransektzählung mit einer auf georeferenzierten Digitalfotos basierten Rastvogelzählung.