Mozingo Studies II. Similarity of the Planktonic and Deposited Diatom Assemblages

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Kurt A. Haberyan
Kurt A. Haberyan
α Northwest Missouri State University Northwest Missouri State University

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Mozingo Studies II.  Similarity of the Planktonic and Deposited Diatom Assemblages

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Abstract

In paleolimnology, downcore assemblages are taken to be representative of the plankton that were living at some moment in the past. To evaluate the fidelity of the deposited diatom assemblage to that of the living plankton, a twenty-year series of whole-water plankton samples was compared to surface-sediment diatoms. When standardized and pooled, the 81 quarterly plankton samples were composed of Aulacoseira (51%), Cyclostephanos and other discoid diatoms (28%), Asterionella (9%), and Fragilaria (8%). In the deposited assemblage, however, the rank of the two most-common taxa was reversed: Cyclostephanos+ outnumbered Aulacoseira (47 and 34%, respectively). Some littoral taxa were over-represented in sediments (e.g. Encyonema) while others were under-represented (e.g. Gyrosigma). The reasons for these differences appear unrelated to frustule dissolution, but may insteadrelate to sampling frequency, sampling depth, and lake-specific characteristics.

References

7 Cites in Article
  1. N Anderson (1989). A whole-basin diatom accumulation rate for a small eutrophic lake in Northern Ireland and its palaeoecological implications.
  2. Richard Battarbee (1978). Spatial variations in the water quality of Lough Erne, Northern Ireland, on the basis of surface sediment diatom analysis.
  3. R Battarbee (1979). Early algological records: help or hindrance to palaeolimnology.
  4. R Battarbee (1981). Changes in the diatom microflora of a eutrophic lake since 1900 from a comparison of old algal samples and the sedimentary record.
  5. Roger Flower (1993). Diatom preservation: experiments and observations on dissolution and breakage in modern and fossil material.
  6. Kurt Haberyan (1985). The role of eopepod fecal pellets in the deposition of diatoms in Lake Tanganyika1.
  7. K Haberyan (1988). Phycology, sedimentology, and paleolimnology near Cape Maclear.

Funding

No external funding was declared for this work.

Conflict of Interest

The authors declare no conflict of interest.

Ethical Approval

No ethics committee approval was required for this article type.

Data Availability

Not applicable for this article.

How to Cite This Article

Kurt A. Haberyan. 2017. \u201cMozingo Studies II. Similarity of the Planktonic and Deposited Diatom Assemblages\u201d. Global Journal of Science Frontier Research - I: Interdisciplinary GJSFR-I Volume 16 (GJSFR Volume 16 Issue I3): .

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Issue Cover
GJSFR Volume 16 Issue I3
Pg. 37- 41
Journal Specifications

Crossref Journal DOI 10.17406/GJSFR

Print ISSN 0975-5896

e-ISSN 2249-4626

Keywords
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GJSFR-I Classification: FOR Code: 040599
Version of record

v1.2

Issue date

January 25, 2017

Language
en
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In paleolimnology, downcore assemblages are taken to be representative of the plankton that were living at some moment in the past. To evaluate the fidelity of the deposited diatom assemblage to that of the living plankton, a twenty-year series of whole-water plankton samples was compared to surface-sediment diatoms. When standardized and pooled, the 81 quarterly plankton samples were composed of Aulacoseira (51%), Cyclostephanos and other discoid diatoms (28%), Asterionella (9%), and Fragilaria (8%). In the deposited assemblage, however, the rank of the two most-common taxa was reversed: Cyclostephanos+ outnumbered Aulacoseira (47 and 34%, respectively). Some littoral taxa were over-represented in sediments (e.g. Encyonema) while others were under-represented (e.g. Gyrosigma). The reasons for these differences appear unrelated to frustule dissolution, but may insteadrelate to sampling frequency, sampling depth, and lake-specific characteristics.

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Mozingo Studies II. Similarity of the Planktonic and Deposited Diatom Assemblages

Kurt A. Haberyan
Kurt A. Haberyan Northwest Missouri State University

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