Abstract
Here, we present an analysis of the changes in phenology of zooplankton and phytoplankton at the Helgoland Roads (Southern North Sea) sampling site. We observed that diatoms and calanoid copepods have changed their start of season in a similar way in the last decades. This, however, was caused by different mechanisms. Where the change in the phytoplankton phenology seems to be linked largely to changes in light conditions, the change in zooplankton timing is caused by temperature.
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Acknowledgements
We thank the many mentors, supervisors, collaborators, and students that helped us on our scientific path. Without all of these people it would not have been possible to do the work that we have been so fortunate to be allowed to do. Mostly, it has been great fun with all of you, and we would not have wanted our careers any other way. Most importantly, we thank our two wonderful boys, Oisín and Malte, who certainly have been patient and loving through all the “I will be home in ten minutes ….” statements, but who always were proud of what we do.
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Karen H. Wiltshire and Maarten Boersma
Karen H. Wiltshire and Maarten Boersma
Conferences are highly useful professionally as well as rewarding private means to meet exciting new people. It only took us as long as the exchange of some coupons for alcoholic and nonalcoholic beverages to realize that a cooperation might be fruitful. Both Karen, who was doing her Ph.D. research in Germany, and Maarten, then a Ph.D. student in the Netherlands, worked on limnological themes, and after the “Fateful” meeting subsequently tried to find one common place of work. This was not as easy as it sounded, as junior positions were few and far between. As a result Maarten came to Germany at the exact time when Karen left for Scotland. However, we finally managed to work and live together in Plön, Germany, when we were offered a shared postdoctoral position by Winfried Lampert at the Max Planck Institute for Limnology. After that, the deal was that whoever was offered the first permanent position would take the other person with them. As a result, we moved to the Alfred-Wegener-Institut, Biologische Anstalt Helgoland in 2001, and never regretted this move to the “dark side” of salty water. We have been cooperating on plant-animal interactions ever since having met 26 years ago at a limnological conference.
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Wiltshire, K.H., Boersma, M. (2016). Meeting in the Middle: On the Interactions Between Microalgae and Their Predators or Zooplankton and Their Food. In: Glibert, P., Kana, T. (eds) Aquatic Microbial Ecology and Biogeochemistry: A Dual Perspective. Springer, Cham. https://doi.org/10.1007/978-3-319-30259-1_17
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