945 Varying organic content in fish otoliths: Effects on SIMS-based δ18O measurements and possible corrections

Title

Varying organic content in fish otoliths: Effects on SIMS-based δ18O measurements and possible corrections

Period

2019-07-01 till 2023-04-01

Period length

3 years 9 months

Sampling interval

Irregular Interval

Description

The data in this dataset was collected by sampling 113 otoliths from northern pike along environmental gradients in Baltic Sea brackish lagoons, their freshwater tributaries, and a reference freshwater lake in Brandenburg, Germany, lake Kleiner Döllnsee. Measurements of stable oxygen isotopes as thermal marker and hydroxy ions as an indicator for organic matter were taken from the otoliths using secondary ion mass spectrometry (SIMS) at the GeoForschungsZentrum Potsdam. Electron microprobe (EPMA) scans of calcium (Ca), magnesium (Mg), phosphorus (P), sulphur (S), and strontium (Sr), were taken as 10 um spatial grid patterns of three representative otolith specimen. A spatial SIMS grid of 35 um was taken of one representative otolith speciemen. Measurements of water isotopes, water temperature, salinity and turbidity were taken for interpolation of expected otolith d18O values. Annual otolith increments, along with age information, were used to asssess growth performance at the individual level.

Species Groups

Study site

Bodden lagoons

Sampling locations

Kleiner Döllnsee (52.99, 13.57)

Kleiner Döllnsee

location

52.995818152930575, 13.579959869384767

location

show on map center

type

Lake

state

Brandenburg

code

KD

description

Contact

Timo Rittweg, Robert Arlinghaus

Data usage

Please send a request to Timo Rittweg, Robert Arlinghaus if you like to use this data. Mind our data policy: IGB Data Policy

Project

Boddenhecht Project Website

Current doi

10.18728/igb-fred-946.0

Data files (e.g. excel)

Machine Readable Metadata Files

FRED provides all metadata of this package in a maschine readable format. There is a pure XML file and one EML file in Ecological Metadata Language. Both files are published under the freeODC-ByLicence.

• Varying_organic_content_in_fish_otoliths:_Effects_on_SIMS-based_δ18O_measurements_and_possible_corrections.xml
• Varying_organic_content_in_fish_otoliths:_Effects_on_SIMS-based_δ18O_measurements_and_possible_corrections.eml