This dataset contains measurements of the diameter and area of Antarctic krill (Euphausia superba) oocytes collected from the northern Antarctic Peninsula during the austral winter from 2012 to 2016 (August each year). Female oocytes were examined using the "squash technique" developed by Cuzin-Roudy and Amsler (1991) for assessing ovarian development and sexual maturity. The squash method provides a detailed view of oocyte size, which serves as an indicator of reproductive status and energy allocation during the winter months. Data were collected and processed according to the methods described by Steinke et al. (2024). The dataset includes .csv files containing oocyte diameter and area measurements for individual female krill. These data are valuable for understanding krill reproductive cycles and their ecological responses to environmental variability. Data users should acknowledge the project and grant number, as well as credit Dr. Kim Bernard, Dr. Kirsten Steinke, and Dr. Christian Reiss. The research was conducted in collaboration with the US National Oceanic and Atmospheric Administration Antarctic Marine Living Resources group.
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Hot spring water, biofilm, and contextual samples from Yellowstone National Park collected under Permit YELL-2022-SCI-7020 by Havig and Hamilton for publication support of submitted manuscript on nitrogen isotope and nifH data
This data has been generated by Dr. Jeff R. Havig and Dr. Trinity L. Hamilton, Dept. of Plant and Microbial Biology, University of Minnesota. The data compiled in this spreadsheet represents water geochemistry and biofilm molecular data collected under Yellowstone Permit YELL-2022-SCI-7020, used for submitted publication "Between a Rock and a Soft Place: Biomass δ15N Values of Hot Spring Microbial Communities and Their Potential for Preservation in the Rock Record", submitted March, 2024 to JRG Biogeosciences by Havig and Hamilton. Any publications that use this data are requested to cite the final accepted paper.
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- Award ID(s):
- 1939303
- PAR ID:
- 10636420
- Publisher / Repository:
- Data Repository for the University of Minnesota (DRUM)
- Date Published:
- Subject(s) / Keyword(s):
- hot springs Yellowstone National Park geochemistry nitrogen isotopes nitrogen fixation
- Format(s):
- Medium: X
- Location:
- Data Repository for the University of Minnesota (DRUM)
- Right(s):
- Attribution-NonCommercial-NoDerivs 3.0 United States
- Institution:
- University of Minnesota
- Sponsoring Org:
- National Science Foundation
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