natural variations that would occur even if humans were absent. Information regarding the pre-anthropogenic state of the Holocene can be obtained either from proxies that record past climate and environmental

important implications for Southern Ocean phytoplankton ecology. By the year 2100, the ongoing anthropogenic emissions of carbon dioxide (CO2) will likely have increased atmospheric CO2 concentrations from

Quéric, N.-V., Schewe, I., Wlodarska-Kowalczuk, M., Klages, M. (2016). Natural variability or anthropogenically-induced variation? Insights from 15 years of multidisciplinary observations at the arctic marine

changes are also studied in such experiments. Large scale circulation changes as captured by anthropogenic tracers Contact: Michael Karcher The Arctic Ocean surface circulation is characterized by the [...] mark specific water masses on their paths through the Arctic. Such a tracer is 129 Iodine, an anthropogenic radionuclide which is dumped as waste into the Irish Sea and the North Sea by nuclear reprocessing

prominent and frequent hydroclimate extremes and whether there is a difference between natural and anthropogenic impact on Siberian hydrology by comparison of early Holocene and recent warming phases. To answer [...] from the Early Holocene with a similar temporal resolution, if achievable, to disentangle the anthropogenic and natural contribution. For investigations, primarily diatom-δ18O will be used to establish

investigate both the natural processes that influence seafloor morphology and sediment dynamics and anthropogenic influences, such as the use of bottom-contact fishing gear. Acoustic methods further allow us

Antarctic natural resources is currently (still) prohibited under the Antarctic Treaty. Hence few anthropogenic acoustic sources exist in this region while the sea ice cover absorps sound more efficiently than [...] reducing ambient sound levels further. Spectrogram of 20060829-2207_PALAOA (Photo: OZA AWI) Anthropogenic sound Ship noise Polarstern in sea ice (Photo: AWI) Twice a year, the German research vessel

prominent and frequent hydroclimate extremes and whether there is a difference between natural and anthropogenic impact on Siberian hydrology by comparison of early Holocene and recent warming phases. To answer [...] from the Early Holocene with a similar temporal resolution, if achievable, to disentangle the anthropogenic and natural contribution. For investigations, primarily diatom-δ18O will be used to establish

Research (DAM) through its sustainMare research mission, is developing concepts for reducing anthropogenic stresses on marine ecosystems and biodiversity. The project brings together 32 experts from 15

approaches, and modeling techniques, Double-Trouble investigates the influence of global warming and anthropogenic pollution on the structure and functioning of the Central Arctic food web under current and future