Low taxonomic resolution of papillate Cupressaceae pollen (former Taxodiaceae) impairs their applicability for palaeo-habitat reconstruction

Bouchal, Johannes M.; Denk, Thomas

doi:10.1080/00173134.2019.1701704

Cited by 13 publications

(6 citation statements)

References 45 publications

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“…Erdtman et al (1961) described that exine is 1.5 μm thick in J. communis . Khan et al (2018) reported exine thickness ranges 0.4, 0.4, and 0.25 μm for the J. communis , J. excelsa , and J. squamata , respectively, and these result differ from the present finding (Bouchal & Denk, 2020; Galveias et al, 2021).…”

Section: Discussioncontrasting

confidence: 92%

Morpho‐palynological investigation of gymnospermal flora from subalpine and alpine zones of northern Pakistan using LM and SEM

Kayani

Hussain

Ahmad

et al. 2021

Microscopy Res & Technique

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The pollen morphology, with special reference to exine sculpture, of some species of the gymnosperms was assessed for the first time from the subalpine and alpine zones of western Himalayas northern Pakistan. The pollen of all these species is airborne and allergenic, so pollen morphology helps for identification of this allergenic pollen at specific level. Different morpho-palynological characteristics were analyzed including size range of pollen, polar and equatorial diameter ratio, exine ornamentation, sculpturing, exine thickness, pollen type, and shape. For accurate and quick identification of species, taxonomic key was made based on different morpho-palynological characteristics. The quantitative data were processed using SPSS software.Gymnospermal pollen includes inaperturate, rarely 1-colpate observed in (Cupressaceae), hexazonocolpate in (Ephedraceae), vesiculate, bissacate in (Pinaceae), and inaperturate in (Taxaceae). Different pollen shapes observed were prolate (4 spp), sub-spheroidal (7 spp), and oblate (1 spp). Variation was observed in exine sculpturing granular (4 spp), reticulate (1 spp), areolate-punctate (3 spp), and psilate (2 spp). This is based on the analysis of 10 plants belonging to four families of gymnosperms. Distinct pollen shape has emerged as the most diagnostic feature to separate some genera such as spheroidal in (Cupressaceae, Taxaceae), prolate and radiosymmetrical in (Ephedraceae), and bilateral in (Pinaceae). Exine thickness and sculpturing proved to be helpful at generic and specific levels. The results reinforced the significance of gymnospermal pollen morphological features which were used as aid for valuable taxonomic tool in plant systematics.

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Section: Discussioncontrasting

confidence: 92%

Morpho‐palynological investigation of gymnospermal flora from subalpine and alpine zones of northern Pakistan using LM and SEM

Kayani

Hussain

Ahmad

et al. 2021

Microscopy Res & Technique

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“…The origin of both shoots and cones from the same "whole-plant" is supported by the respective morphological correspondence to the same parts of fossil specimens described by Kvaček (1989) R e m a r k s . Pollen grains generally are well preserved but difficult to recognize at the genus or species level in the absence of SEM analyses (Hernandéz-Castillo et al 2005, Sokolova et al 2017, Bouchal and Denk 2020. In this study, only Taxodium/Glyptostrobus-type (Pl.…”

Section: Genus Tetraclinis Mast 1892mentioning

confidence: 74%

Late Messinian flora from the post-evaporitic deposits of the Piedmont Basin (Northwest Italy)

Niccolini¹,

Martinetto²,

Lanini³

et al. 2022

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In the Piedmont Basin (PB), one of the northernmost Mediterranean basins recording the Messinian Salinity Crisis (MSC), pollen and plant macroremains (leaves, fruits and seeds) were studied in four sedimentary sections of the post-evaporitic interval (5.6–5.33 Ma). The joint palaeobotanical investigations of the two datasets allowed the reconstruction of a floristic assemblage which consists of 133 taxa (95 woody and 38 non-woody taxa). The lowland/coastal vegetation reconstructed by integrating macro- and microfossil data exhibits several analogies with existing “types/formations” of South-Southeast Asia, whereas taxa occurring solely in the pollen record suggest the existence of altitudinal forests with conifers and a few angiosperms. We suggest that the generalized type of lowland, zonal palaeovegetation in the post-evaporitic Messinian of the PB was of no-analog type, but most similar to either “mixed mesophytic forests” or “broad-leaved evergreen forests”, which indicates a Köppen-Trewartha subtropical palaeoclimate.

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“…Based on pollen abundances (electronic supplementary material, table S4), local (close to the lake), regional (occurring in the FPS) and extra-regional ( potentially occurring outside the FPS) vegetation can be inferred. Local vegetation consisted of BLD forests subjected to flooding (Alnus) and NLD swamp forests ( papillate Cupressaceae; [66]). Close to the lake, a mixed forest with Fagus, Abies and Cathaya thrived (using the modern Abant Gölü of northern Turkey as a reference for pollen rain vegetation relationships; [67]).…”

Section: Pollen and Spores: Diversity And Environmental Signalmentioning

confidence: 99%

Messinian vegetation and climate of the intermontane Florina–Ptolemais–Servia Basin, NW Greece inferred from palaeobotanical data: how well do plant fossils reflect past environments?

et al. 2020

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The late Miocene is marked by pronounced environmental changes and the appearance of strong temperature and precipitation seasonality. Although environmental heterogeneity is to be expected during this time, it is challenging to reconstruct palaeoenvironments using plant fossils. We investigated leaves and dispersed spores/pollen from 6.4 to 6 Ma strata in the intermontane Florina–Ptolemais–Servia Basin (FPS) of northwestern Greece. To assess how well plant fossils reflect the actual vegetation of the FPS, we assigned fossil taxa to biomes providing a measure for environmental heterogeneity. Additionally, the palynological assemblage was compared with pollen spectra from modern lake sediments to assess biases in spore/pollen representation in the pollen record. We found a close match of the Vegora assemblage with modern Fagus–Abies forests of Turkey. Using taxonomic affinities of leaf fossils, we further established close similarities of the Vegora assemblage with modern laurophyllous oak forests of Afghanistan. Finally, using information from sedimentary environment and taphonomy, we distinguished local and distantly growing vegetation types. We then subjected the plant assemblage of Vegora to different methods of climate reconstruction and discussed their potentials and limitations. Leaf and spore/pollen records allow accurate reconstructions of palaeoenvironments in the FPS, whereas extra-regional vegetation from coastal lowlands is probably not captured.

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Low taxonomic resolution of papillate Cupressaceae pollen (former Taxodiaceae) impairs their applicability for palaeo-habitat reconstruction

Cited by 13 publications

References 45 publications

Morpho‐palynological investigation of gymnospermal flora from subalpine and alpine zones of northern Pakistan using LM and SEM

Morpho‐palynological investigation of gymnospermal flora from subalpine and alpine zones of northern Pakistan using LM and SEM

Late Messinian flora from the post-evaporitic deposits of the Piedmont Basin (Northwest Italy)

Messinian vegetation and climate of the intermontane Florina–Ptolemais–Servia Basin, NW Greece inferred from palaeobotanical data: how well do plant fossils reflect past environments?

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