P-Campus Lecture Series 2023
THURSDAYS | 15:00 h

In April 2023, the new multidisciplinary lecture series of the Leibniz Science Campus Phosphorus Research Rostock will start. Look forward with us to exciting lectures from different disciplines and use the lectures for professional exchange.
The lectures will take place on Thursdays at 15:00. They are organized online via Webex and are open to everyone after registration. The presentations will be given in German or English (see respective lecture for details), the slides of the presentation will be in English. Questions to the lecturer may be in German or English.
After your registration you will receive a confirmation e-mail. The access data will be sent to you on the day of the event.
The lectures will be recorded and made available to P-Campus members and registered participants upon request.
Please make sure that Webex has access to your speaker and microphone, if applicable (test here in advance). If you have any questions about this, please contact Maxi Hoche (maxi.hoche@io-warnemuende.de). If you have any subject-specific questions concerning the lectures, please contact Dana Zimmer (dana.zimmer@io-warnemuende.de). We look forward to your participation and exciting discussions.
Lectures
The lecture has to be cancelled at short notice on 20.04.2023 due to illness.
New date: 27.04.2023
Abstract
Coastal ecosystems are exposed to multiple stressors due to their use and transboundary position between the sea and terrestrial realm, which can decrease ecosystem integrity and subsequent ecosystem services. For example, the catchment area of rivers transports large amounts of nitrogen and phosphorus into coastal waters, which subsequently suffer from eutrophication. Countermeasures have had limited success to date, as decreased nutrient inputs have also altered phytoplankton communities. The altered community, often consisting of picophytoplankton, is able to maintain a high biomass and turbidity despite little freely available phosphorus, which prevents the establishment of e.g. macrophytes. In this talk, ecological aspects of the phytoplankton communities of the southern Baltic Sea in relation to phosphorus will be examined in more detail. Results will be presented on seasonal, long-term, and spatial data of phosphorus, physiological, population biology and biomanipulation studies using mesocosms. It will be discussed what other management options could be pursued (or not) to reach again a clear water state in German coastal waters.
Date/Time
20.04.2023 / 15:00 - ca. 15:45 h (excl. questions)
Location
online via Webex
Lecturer
Dr. Maximilian Berthold (Phytoplankton Ecophysiology, Mount Allison University, Canada)
Language
German / slides of the presentation in English
Participation Fee
free of charge
Abstract
The availability and cycling of phosphorus in soils are significantly influenced by soil aggregates, which range in their size from large macroaggregates to smallest nanoparticles. The assembly of aggregates of different sizes creates a 3D structure with interconnected voids and pores of different shapes, sizes, and geometries. This network of pores acts as a dynamic biogeochemical interface that facilitates the movement of gases and water within the soil. The architecture and stability of soil aggregates, and thus their ability to provide niches for water storage and microbial nutrient metabolism, depend largely on the spatial arrangement of the individual structural units, their elemental composition, and the distribution of metal oxides and organic matter. In particular, soil colloids (particles smaller than 1000 nanometers) are increasingly recognized as important nutrient carriers in ecosystems because of their unique composition and large specific surface area. They are highly mobile in soils, and the transport of elements facilitated by colloids is closely linked to water movement in the soil. As a result, loss of P and other nutrients through particulate transport has become a growing concern. In this talk, we will take a closer look at the composition and stability of soil aggregates and their controls on phosphorus turnover by organisms. We will discuss the impact of land use change on the phosphorus turnover and examine analytical techniques for characterizing nanoparticles and colloids in soil, including their size and elemental composition. By means of a case study, we specifically examine subsurface transport of particulate phosphorus to adjacent surface waters. By understanding the complex interactions between soil aggregate architecture, elemental composition, and biogeochemical processes, we can control nutrient cycling in ecosystems and mitigate the loss of phosphorus and other nutrients through particulate transport.
Date/Time
01.06.2023 / 15:00 - ca. 15:45 h (excl. questions)
Location
online via Webex
Lecturer
Dr. Nina Siebers (Forschungszentrum Jülich)
Language
English
Participation Fee
free of charge
Abstract
Raman spectroscopy is an established technique for simple, non-destructive and molecule-specific analysis in many applications, e.g. the assessment of phosphate species. However, fluorescence interference can potentially mask weak Raman signals thus limiting the information content. Here, we present selected concepts to address the fluorescence issue. Confocal Raman microscopy can focus on small sample regions in the micrometer range while shielding out fluorescence from out-of-focus regions. For highly fluorescent samples, shifted excitation Raman difference spectroscopy (SERDS) can provide a suitable way to separate Raman signals from interferences using a physical approach with two slightly shifted laser wavelengths.
Detailed knowledge about soil composition is of global importance to determine fertilizer demands and to enable efficient nutrient management. Results show the spatially-resolved imaging and identification of calcium phosphates amended to three different soils. Moreover, using soil collected from an agricultural field, the identification of 13 different soil minerals and the capability for quantitative analysis, e.g. to predict the organic matter or carbonate content was demonstrated.
Molecule-specific bone analysis has implications in many areas including medicine, animal health and forensics. Measurements conducted on bone tissue (chicken thigh and pork metacarpal) demonstrate the identification of mineral (calcium phosphate) and organic (collagen) bone constituents despite strong fluorescence interference. It was shown that the mineral-to-collagen ratio is higher in chicken bone compared to pork bone thus being a suitable indicator to distinguish between these two bone types.
A portable SERDS system has been developed in-house and on-site pilot investigations on an agricultural field will be presented as application example.
Date/Time
22.06.2023 / 15:00 - ca. 16:00 h (excl. questions)
Location
online via Webex
Lecturer
Dr. Kay Sowoidnich (Ferdinand-Braun-Institut (FBH), Leibniz-Institut für Höchstfrequenztechnik)
Language
German / slides of the presentation in English
Participation Fee
free of charge
Abstract
TBA
Date/Time
14.09.2023 / 15:00 - ca. 16:00 h (excl. questions)
Location
online via Webex
Lecturer
Dr. Marion Kanwischer (Leibniz Institute for Baltic Sea Research (IOW))
Language
German / slides of the presentation in English
Participation Fee
free of charge
Abstract
TBA
Date/Time
28.09.2023 / 15:00 - ca. 16:00 h (excl. questions)
Location
online via Webex
Lecturer
Dr. Kerstin Panten (Julius Kühn-Institut)
Language
German / slides of the presentation in English
Participation Fee
free of charge
Abstract
TBA
Date/Time
05.10.2023 / 15:00 - ca. 16:00 h (excl. questions)
Location
online via Webex
Lecturer
Dr. Maire Holz (Leibniz Centre for Agricultural Landscape Research (ZALF))
Language
German / slides of the presentation in English
Participation Fee
free of charge
Abstract
TBA
Date/Time
19.10.2023 / 15:00 - ca. 16:00 h (excl. questions)
Location
online via Webex
Lecturer
Prof. Tom Goldammer (Research Institute for Farm Animal Biology (FBN))
Language
German / slides of the presentation in English
Participation Fee
free of charge
Abstract
TBA
Date/Time
16.11.2023 / 15:00 - ca. 16:00 h (excl. questions)
Location
online via Webex
Lecturer
Dr. Khanneh Wadinga Fomba (Leibniz Institute for Tropospheric Research (TROPOS))
Language
German / slides of the presentation in English
Participation Fee
free of charge