BETULACEAE and CORYLACEAE

Blackmore, Stephen; Steinmann, Jocelyn A.J.; Hoen, P.P.; Punt, W.

doi:10.1016/s0034-6667(02)00156-2

Cited by 61 publications

(35 citation statements)

References 26 publications

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“…-The pollen morphology (LM and SEM) of Corylus has been documented by Chen (1991), Fritz and Allesch (1999), Blackmore et al (2003), Wei (2003), Beug (2004), Wang et al (1995), Li et al (2011a), Miyoshi et al (2011) and Nikolaieva et al (2014). The pollen ultrastructure (SEM, TEM) of Corylus has been described and figured by Pehlivan (1987) and Blackmore et al (2003). Fossil pollen showing LM-based morphological affinities to pollen of modern Corylus have commonly been assigned to the pollen form-species Triporopollenites coryloides H.Pflug (e.g.…”

Section: Genus Corylus Lmentioning

confidence: 85%

“…1 ( Figure 4G-I Remarks. -The pollen morphology (LM and SEM) of Carpinus has been documented by Huang (1972), Lieux (1980), Chen (1991), Jones et al (1995), Wang et al (1995), Fritz and Allesch (1999), Blackmore et al (2003), Beug (2004), Akhondnezhad et al (2011), Li et al (2011a and Miyoshi et al (2011). The pollen ultrastructure (TEM) of Carpinus has been described and figured by Pehlivan (1987).…”

Section: Genus Carpinus Lmentioning

confidence: 87%

“…of many extant Betula species has been presented by Birks (1968), Lieux (1980), Zavada and Dilcher (1986), Chen (1991), Jones et al (1995), Wang et al (1995), Mäkelä (1996), Fritz and Allesch (1999), Blackmore et al (2003), Wei (2003), Beug (2004), Clegg et al (2005), Karlsdóttir et al (2007Karlsdóttir et al ( , 2008, Li et al (2011a), Miyoshi et al (2011) and Lin et al (2013). The pollen ultrastructure (SEM, transmission electron microscopy [TEM]) of Betula has been described and figured by Zavada and Dilcher (1986), Pehlivan (1987) and Blackmore et al (2003). Fossil pollen showing LM-based morphological affinities to pollen of modern Betula have commonly been assigned to the pollen form-genus Betulapollenites (e.g.…”

Section: Systematic Palaeontologymentioning

confidence: 99%

“…-Pollen morphology (LM, SEM) and partly the ultrastructure (SEM) of Betulaceae has been described in detail by Chen (1991) and Blackmore et al (2003). The pollen morphology (LM and SEM) of all subgenera of Alnus, including pollen from most of the extant Alnus species has been documented by Huang (1972), Lieux (1980), Chen (1991), Jones et al (1995), Wang et al (1995), Fritz and Allesch (1999), Perveen and Qaiser (1999), Blackmore et al (2003), Beug (2004), Fujiki and Ozawa (2007), Li et al (2011a), May (2011), Miyoshi et al (2011), Leopold et al (2012), May and Lacourse (2012) and Liu et al (2014). Fossil pollen showing LM-based morphological affinities to pollen of modern Alnus have commonly been assigned to the pollen form-genera Alnipollenites (e.g.…”

Section: Systematic Palaeontologymentioning

confidence: 99%

“…-Pollen of extant Ostrya has been described and figured using LM and SEM by Lieux (1980), Accorsi et al (1991), Chen (1991), Jones et al (1995), Wang et al (1995), Fritz and Allesch (1999), Blackmore et al (2003), Beug (2004), Li et al (2011a) and Miyoshi et al (2011). The ultrastructure (TEM) of Ostrya pollen has been documented by Pehlivan (1987).…”

mentioning

confidence: 99%

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Combined LM and SEM study of the middle Miocene (Sarmatian) palynoflora from the Lavanttal Basin, Austria: part IV. Magnoliophyta 2 – Fagales to Rosales

Grímsson

Bouchal

Xafis

et al. 2015

Grana

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Section: Genus Corylus Lmentioning

confidence: 85%

Section: Genus Carpinus Lmentioning

confidence: 87%

Section: Systematic Palaeontologymentioning

confidence: 99%

Section: Systematic Palaeontologymentioning

confidence: 99%

mentioning

confidence: 99%

See 3 more Smart Citations

Combined LM and SEM study of the middle Miocene (Sarmatian) palynoflora from the Lavanttal Basin, Austria: part IV. Magnoliophyta 2 – Fagales to Rosales

Grímsson

Bouchal

Xafis

et al. 2015

Grana

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First automatic size measurements for the separation of dwarf birch and tree birch pollen in MIS 6 to MIS 1 records from Northern Germany

Theuerkauf,

Nehring,

Gillert

et al. 2024

Ecology and Evolution

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During past glacial periods, the land cover of Northern Eurasia and North America repeatedly shifted between open steppe tundra and boreal/temperate forest. Tracking these changes and estimating the coverage of open versus forested vegetation in past glacial and interglacial landscapes is notoriously difficult because the characteristic dwarf birches of the tundra and the tree birches of the boreal and temperate forests produce similar pollen grains that are difficult to distinguish in the pollen record. One objective approach to separating dwarf birch pollen from tree birch pollen is to use grain size statistics. However, the required grain size measurements are time‐consuming and, therefore, rarely produced. Here, we present an approach to automatic size measurement based on image recognition with convolutional neural networks and machine learning. It includes three main steps. First, the TOFSI algorithm is applied to detect and classify pollen, including birch pollen, in lake sediment samples. Second, a Resnet‐18 neural network is applied to select the birch pollen suitable for measurement. Third, semantic segmentation is applied to detect the outline and the area and mean width of each detected birch pollen grain. Test applications with two pollen records from Northern Germany, one covering the Lateglacial‐Early Holocene transition and the other covering the Mid to Late Pleistocene transition, show that the new technical approach is well suited to measure the area and mean width of birch pollen rapidly (>1000 per hour) and with high accuracy. Our new network‐based tool facilitates more regular size measurements of birch pollen. Expanded analysis of modern birch pollen will help to better understand size variations in birch pollen between birch species and in response to environmental factors as well as differential sample preparation. Analysis of fossil samples will allow better quantification of dwarf birch versus tree birch in past environments.

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Scanning electron imaging of mellitophilous and allergenic pollen grain of arid and northern irrigated agroecological zones of Pakistan

Noor

Ahmad

2021

Microscopy Res & Technique

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Palynomorphic studies of 65 common mellitophilous and 16 allergenic flora of Arid and Northern irrigated agroecological zones of Pakistan are carried out in this study by using field emission scanning electron microscope (FESEM).Mellitophilous pollen were extracted from honey samples of selected sites. For collection of local allergenic pollen, previously identified allergy-causing plants were selected. Pollen morphological examination was carried out under FESEM.Diverse range of pollen shapes ranging from monad to polyad and sculpturing ranging from psilate to echinate, scabrate to reticulate, bireticulate, or echinolophate were observed. Brassicaceae, Myrtaceae, Asteraceae, Rosaceae, and Poaceae were observed to be dominant allergenic and mellitophilous families of the selected sites.

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BETULACEAE and CORYLACEAE

Cited by 61 publications

References 26 publications

Combined LM and SEM study of the middle Miocene (Sarmatian) palynoflora from the Lavanttal Basin, Austria: part IV. Magnoliophyta 2 – Fagales to Rosales

Combined LM and SEM study of the middle Miocene (Sarmatian) palynoflora from the Lavanttal Basin, Austria: part IV. Magnoliophyta 2 – Fagales to Rosales

First automatic size measurements for the separation of dwarf birch and tree birch pollen in MIS 6 to MIS 1 records from Northern Germany

Scanning electron imaging of mellitophilous and allergenic pollen grain of arid and northern irrigated agroecological zones of Pakistan

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