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Relative pollen productivity estimates in the forest steppe landscape of southeastern Romania

Grindean, Roxana; Nielsen, Anne Birgitte LU ; Tanţău, Ioan and Feurdean, Angelica (2019) In Review of Palaeobotany and Palynology 264. p.54-63
Abstract

Estimates of relative pollen productivity (RPP) represent key input parameters for model-based quantitative reconstructions of past vegetation cover. In this study, we provide the first RPP estimates for 13 taxa from the forest steppe ecoregion in southeastern Romania (southeastern Europe). We used modern pollen assemblages from 26 points together with vegetation surveys and mapping, covering a 1.5 km radius around each sampling site. We have estimated the relevant source area of pollen (RSAP) and pollen productivity for 13 taxa relative to Poaceae using the ERV (Extended R-value model), sub-model 3, as this model shows the best goodness of fit. The estimated RSAP is about 100 m and falls within the range of RSAP estimates of moss... (More)

Estimates of relative pollen productivity (RPP) represent key input parameters for model-based quantitative reconstructions of past vegetation cover. In this study, we provide the first RPP estimates for 13 taxa from the forest steppe ecoregion in southeastern Romania (southeastern Europe). We used modern pollen assemblages from 26 points together with vegetation surveys and mapping, covering a 1.5 km radius around each sampling site. We have estimated the relevant source area of pollen (RSAP) and pollen productivity for 13 taxa relative to Poaceae using the ERV (Extended R-value model), sub-model 3, as this model shows the best goodness of fit. The estimated RSAP is about 100 m and falls within the range of RSAP estimates of moss pollsters and forest hollows from other RPP-related studies. Results show that Rubiaceae (7.97), Apiaceae (5.91), Artemisia (5.89) and Fraxinus (2.99) are high pollen producers compared to Poaceae, while Plantago lanceolata (0.58), Fabaceae (0.40), Acer (0.30), Rosaceae (0.29), Carpinus orientalis (0.24), Cerealia (0.22) and Asteraceae (0.16) are low pollen producers with lower RPPs than Poaceae. Quercus (1.10) has a pollen productivity close to that of Poaceae. The RPPs for Carpinus orientalis and Fabaceae are published here the first time for Europe. The high pollen producing plants include both entomophilous and anemophilous species, while the low pollen producers are mostly entomophilous species. Our results form an essential contribution to improving the accuracy of quantitative reconstruction of forest steppe ecoregion in Europe and generally in regions with a similar climate and vegetation setting.

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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Extended R-value model, Forest steppe, Relative pollen productivity estimates, Relevant source area of pollen, Southeastern Romania
in
Review of Palaeobotany and Palynology
volume
264
pages
10 pages
publisher
Elsevier
external identifiers
  • scopus:85062225887
ISSN
0034-6667
DOI
10.1016/j.revpalbo.2019.02.007
language
English
LU publication?
yes
id
b1f0f4c2-85ba-4ea8-a20e-59adb181321f
date added to LUP
2019-03-11 10:49:20
date last changed
2019-04-02 04:14:44
@article{b1f0f4c2-85ba-4ea8-a20e-59adb181321f,
  abstract     = {<p>Estimates of relative pollen productivity (RPP) represent key input parameters for model-based quantitative reconstructions of past vegetation cover. In this study, we provide the first RPP estimates for 13 taxa from the forest steppe ecoregion in southeastern Romania (southeastern Europe). We used modern pollen assemblages from 26 points together with vegetation surveys and mapping, covering a 1.5 km radius around each sampling site. We have estimated the relevant source area of pollen (RSAP) and pollen productivity for 13 taxa relative to Poaceae using the ERV (Extended R-value model), sub-model 3, as this model shows the best goodness of fit. The estimated RSAP is about 100 m and falls within the range of RSAP estimates of moss pollsters and forest hollows from other RPP-related studies. Results show that Rubiaceae (7.97), Apiaceae (5.91), Artemisia (5.89) and Fraxinus (2.99) are high pollen producers compared to Poaceae, while Plantago lanceolata (0.58), Fabaceae (0.40), Acer (0.30), Rosaceae (0.29), Carpinus orientalis (0.24), Cerealia (0.22) and Asteraceae (0.16) are low pollen producers with lower RPPs than Poaceae. Quercus (1.10) has a pollen productivity close to that of Poaceae. The RPPs for Carpinus orientalis and Fabaceae are published here the first time for Europe. The high pollen producing plants include both entomophilous and anemophilous species, while the low pollen producers are mostly entomophilous species. Our results form an essential contribution to improving the accuracy of quantitative reconstruction of forest steppe ecoregion in Europe and generally in regions with a similar climate and vegetation setting.</p>},
  author       = {Grindean, Roxana and Nielsen, Anne Birgitte and Tanţău, Ioan and Feurdean, Angelica},
  issn         = {0034-6667},
  keyword      = {Extended R-value model,Forest steppe,Relative pollen productivity estimates,Relevant source area of pollen,Southeastern Romania},
  language     = {eng},
  pages        = {54--63},
  publisher    = {Elsevier},
  series       = {Review of Palaeobotany and Palynology},
  title        = {Relative pollen productivity estimates in the forest steppe landscape of southeastern Romania},
  url          = {http://dx.doi.org/10.1016/j.revpalbo.2019.02.007},
  volume       = {264},
  year         = {2019},
}