Skip to main content

IMIS

A new integrated search interface will become available in the next phase of marineinfo.org.
For the time being, please use IMIS to search available data

 

[ report an error in this record ]basket (1): add | show Print this page

one publication added to basket [320914]
Successional blooms of alkenone‐producing haptophytes in Lake George, North Dakota: Implications for continental paleoclimate reconstructions
Theroux, S.; Huang, Y.; Toney, J.L.; Andersen, R.; Nyren, P.; Bohn, R.; Salacup, J.; Murphy, L.; Amaral-Zettler, L. (2020). Successional blooms of alkenone‐producing haptophytes in Lake George, North Dakota: Implications for continental paleoclimate reconstructions. Limnol. Oceanogr. 65(2): 413-425. https://dx.doi.org/10.1002/lno.11311
In: Limnology and Oceanography. American Society of Limnology and Oceanography: Waco, Tex., etc. ISSN 0024-3590; e-ISSN 1939-5590, more
Peer reviewed article  

Available in  Authors 

Authors  Top 
  • Theroux, S.
  • Huang, Y.
  • Toney, J.L.
  • Andersen, R.
  • Nyren, P.
  • Bohn, R.
  • Salacup, J.
  • Murphy, L.
  • Amaral-Zettler, L., more

Abstract
    Alkenone-derived paleotemperature reconstruction holds great promise in lake environments. However, theoccurrence of multiple species of alkenone-producing haptophyte algae in a single lake can complicate thetranslation of alkenone unsaturation to temperature if each species requires an individual temperature calibra-tion. Here, we present thefirst systematic monitoring of two alkenone-producing haptophytes throughout thecourse of a seasonal cycle in Lake George, North Dakota, using a combined approach of DNA sequencing andalkenone lipid characterization. Field sampling revealed a nonoverlapping haptophyte succession, with both anearly and late season haptophyte bloom event. Culturing experiments demonstrated that the two haptophytespecies responsible for these blooms had statistically similar alkenone-temperature responses, although theculture-based calibrations were distinct from the in situ calibration. Bloom timing of each haptophyte speciescorresponded to surface-water temperatures that differed by more than 10?C, revealing that changes in bloomintensities for each species will skew the sediment-inferred temperatures to a different stage of the growth sea-son. These results highlight the importance of accounting for bloom timing when interpreting alkenone-derivedtemperatures in sediment cores, especially in lakes that experience large seasonalfluctuations in water columntemperature and salinity.

All data in the Integrated Marine Information System (IMIS) is subject to the VLIZ privacy policy Top | Authors