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Form variability within the Polygonum bistorta pollen type: a comparison between Pliocene and recent material

Koen Verhoeven (UGent) and Stephen Louwye (UGent)
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Abstract
The NAP component in pollen spectra obtained from marine and estuarine Pliocene sediments in northern Iceland reveals an important continuous presence of aberrant Polygonaceae pollen. The pollen grains show the morphology typical of the Polygonum bistorta type but are conspicuously smaller and have only in three out of five cases clear endopori. As the deviation from the normal may be due to the high latitude of the habitat the pollen is compared with recent reference material collected in Iceland and Western Europe. The sizes of recent pollen from Iceland are really found to be smaller than the values found in the literature concerning the Polygonum bistorta-type. The partly absence of endoapertures was not seen in the recent material.

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Citation

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Chicago
Verhoeven, Koen, and Stephen Louwye. 2010. “Form Variability Within the Polygonum Bistorta Pollen Type: a Comparison Between Pliocene and Recent Material.” In Van Planten En Slakken = Of Plants and Snails : a Collection of Papers Presented to Wim Kuijper in Gratitude for Forty Years of Teaching and Identifying, ed. Corrie Brakels, Kelly Fennema, Welmoed A Out, and Caroline Vermeeren, 227–235. Leiden, Nederland: Sidestone Press.
APA
Verhoeven, Koen, & Louwye, S. (2010). Form variability within the Polygonum bistorta pollen type: a comparison between Pliocene and recent material. In C. Brakels, K. Fennema, W. A. Out, & C. Vermeeren (Eds.), Van planten en slakken = Of plants and snails : a collection of papers presented to Wim Kuijper in gratitude for forty years of teaching and identifying (pp. 227–235). Leiden, Nederland: Sidestone Press.
Vancouver
1.
Verhoeven K, Louwye S. Form variability within the Polygonum bistorta pollen type: a comparison between Pliocene and recent material. In: Brakels C, Fennema K, Out WA, Vermeeren C, editors. Van planten en slakken = Of plants and snails : a collection of papers presented to Wim Kuijper in gratitude for forty years of teaching and identifying. Leiden, Nederland: Sidestone Press; 2010. p. 227–35.
MLA
Verhoeven, Koen, and Stephen Louwye. “Form Variability Within the Polygonum Bistorta Pollen Type: a Comparison Between Pliocene and Recent Material.” Van Planten En Slakken = Of Plants and Snails : a Collection of Papers Presented to Wim Kuijper in Gratitude for Forty Years of Teaching and Identifying. Ed. Corrie Brakels et al. Leiden, Nederland: Sidestone Press, 2010. 227–235. Print.
@incollection{1058280,
  abstract     = {The NAP component in pollen spectra obtained from marine and estuarine Pliocene sediments in northern Iceland reveals an important continuous presence of aberrant Polygonaceae pollen. The pollen grains show the morphology typical of the Polygonum bistorta type but are conspicuously smaller and have only in three out of five cases clear endopori. As the deviation from the normal may be due to the high latitude of the habitat the pollen is compared with recent reference material collected in Iceland and Western Europe. The sizes of recent pollen from Iceland are really found to be smaller than the values found in the literature concerning the Polygonum bistorta-type. The partly absence of endoapertures was not seen in the recent material.},
  author       = {Verhoeven, Koen and Louwye, Stephen},
  booktitle    = {Van planten en slakken = Of plants and snails : a collection of papers presented to Wim Kuijper in gratitude for forty years of teaching and identifying},
  editor       = {Brakels, Corrie and Fennema, Kelly and Out, Welmoed A and Vermeeren, Caroline},
  isbn         = {9789088900518},
  language     = {eng},
  pages        = {227--235},
  publisher    = {Sidestone Press},
  title        = {Form variability within the Polygonum bistorta pollen type: a comparison between Pliocene and recent material},
  year         = {2010},
}