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Found 14 results.

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Seasonal Dataset of DIC, δ13CDIC, DOC, δ13CDOC, pCO2(aq), FCO2 and Biogeochemical Parameters in the Danube River (2023–2024)

This dataset contains dissolved inorganic/organic carbon (DIC/DOC) concentrations, its stable isotope ratios (δ13CDIC/DOC), partial pressure of carbon dioxide in the water column pCO₂(aq) (pCO2(aq)) and area-integrated CO₂ emission rates derived from flux calculations (FCO2; g C d⁻¹), along with corresponding parameters (temperature, pH, calcium, bicarbonate) collected from the Danube River and its key tributaries during five seasonal sampling campaigns in 2023 and 2024. Water samples were collected using a weighted 2 L sampling bottle submerged 1–2 meters below the surface, with sampling conducted from the river center via bridges or passenger boats, and occasionally from the riverbank. In situ temperature measurements were taken with a multiparameter instrument (HQ40d, HACH™, Loveland, CO, USA). δ13ODIC/DOC was analyzed using a OI Analytical Aurora 1030W-IRMS. This dataset is providing valuable insights into carbon dynamics in a large river system and support investigations of biogeochemical cycling. It further can inform ecosystem management and conservation strategies under changing environmental conditions.

Kiel Outdoor Benthoscosm experiment 2018 on ocean warming and upwelling: hourly means of temperature and oxygen

Hourly means of temperature and oxygen as logged in the tanks.

Kiel Outdoor Benthoscosm experiment 2018 on ocean warming and upwelling: abundances of major grazer species

Abundances (numbers) of major grazer species in the tanks as assessed by subsamples taken at three time points (before upwelling 2 and 3 and between the two upwelling events).

Kiel Outdoor Benthoscosm experiment 2018 on ocean warming and upwelling: tank abiotics

Temperature, pH, salinity and oxygen logged and measured in the tanks.

Kiel Outdoor Benthoscosm experiment 2018 on ocean warming and upwelling: tank abiotics control measures

Control measures of temperature, pH, salinity and oxygen as taken by WTW multimeter daily 3h after sunrise.

Kiel Outdoor Benthoscosm experiment 2018 on ocean warming and upwelling: grazing Idotea on Fucus during upwelling event 3 (UPW3)

Grazing rates of the isopod Idotea sp. on the macroalga Fucus vesiculosus during upwelling 3 in response to warming and upwelling.

Kiel Outdoor Benthoscosm experiment 2018 on ocean warming and upwelling: macroalgae growth

Impact of warming and upwelling on macroalgal growth (expressed as anomaly or z-growth).

Kiel Outdoor Benthoscosm experiment 2018 on ocean warming and upwelling: algae photosynthesis during upwelling event 3 (UPW3)

Photosynthetic performance of macroalgae (assessed by light and dark incubation) during upwelling 3 without or with (+4°C) warming.

Kiel Outdoor Benthoscosm experiment 2018 on ocean warming and upwelling: tank nutrients

Weekly measures of nutrients (silicate, nitrate, nitrite, phosphate, ammonium) in the tanks.

Kiel Outdoor Benthoscosm experiment 2018 on ocean warming and upwelling: microfouling during upwelling event 3 (UPW3)

Microfouling (expressed as cell numbers per cm2) by bacteria and diatoms in response to warming (+0, 2 and 4°C) and upwelling during upwelling event 3.

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