A novel approach to study the morphology and chemistry of pollen in a phylogenetic context, applied to the halophytic taxon Nitraria L.(Nitrariaceae)

July 23, 2018
WDG

Open access:

Woutersen, A., Jardine, P.E., Bogota-Angel, R.G., Zhang, H., Silvestro, D., Antonelli, A., Gogna, E., Erkens, R.H.J., Gosling, W.D., Dupont-Nivet, G. & Hoorn, C. (2018) A novel approach to study the morphology and chemistry of pollen in a phylogenetic context, applied to the halophytic taxon Nitraria L.(Nitrariaceae). PeerJ 6, e5055. DOI: 10.7717/peerj.5055

Just published two articles in a special issue on Gnetales:

Rydin, C. & Hoorn, C. (2016) The Gnetales: past and present. Grana 55, 1-4. DOI: 10.1080/00173134.2015.1118530

Bolinder, K., Norback Ivarsson, L., Humphreys, A.M., Ickert-Bond, S., Han, F., Hoorn, C. & Rydin, C. (2016) Pollen morphology of Ephedra (Gnetales) and its evolutionary implications. Grana 55, 24-51. DOI: 10.1080/00173134.2015.1066424

Linnean Society Palynology Specialist Group

November 17, 2015
WDG


Posted on behalf of Barry Lomax
Linnean Society Palynology Specialist Group meeting
Linnean Society of London
Tuesday 24 November 2015

Provisional program

10:30 – 11:00 Barry Thomas (Aberystwyth University). Ecological interpretations of Asturian and Cantabrian lycophyte microspore floras of the Variscan Foreland and the Appalachian Province of the Central Coalfields of the U.S.A

11:00 – 11:30 Adele Julier (Open University). Can FTIR spectroscopy be used to identify grass pollen?

Morning Coffee 11:30-12:00

12:00 – 12:30 Katrina Bakker (York University). Spore particles: new materials applications.

Lunch 12:30-14:00

14:00 – 14:30 Viktória Baranyi1 (Oslo Universiy). Morphology and wall-ultrastructure of Froelichsporites traversei, an enigmatic sporomorph from the Late Triassic in North America.

14:30 – 15:00 Hannah Banks (Royal Botanic Gardens Kew). Functional and phylogenetically useful structures in Caesalpinioid legume pollen.

15:00 – 15:30 Sam Slater (Sheffield University). A quantitative analysis of Middle Jurassic vegetation dynamics based on dispersed spore/pollen assemblages from the Ravenscar Group, North Yorkshire, UK.

Afternoon tea 15:30 – 16:00

16:00 – 16:30 Alex Askew (Sheffield University). A palynological investigation of the Middle Devonian of northern Spain: hunting for the Kačák event.

16:30 – 17:00 Phil Jardine (Open University). A new use for old pollen: reconstructing past solar irradiance using pollen chemistry.

Wine reception

To register please contact Barry Lomax (Group secretary)

Pollen database of Early-Miocene Amazonian palynological diversity

June 29, 2015
milantvm

By Milan Teunissen van Manen
MSc Biological Sciences, University of Amsterdam.

As part of my MSc research project on Early-Miocene paleodiversity shifts due to marine incursions in the Amazon basin, I recorded and photographed large numbers of palynomorphs. The database consists of a set of images (Teunissen van Manen, 2015a) that I took with my smartphone (bundled in pdfs for sharing purposes) and an Excel overview file (Teunissen van Manen, 2015b) where each of the entries is described. Some of the entries are well documented taxa (C’mon, who hasn’t heard of Zonocostites ramonae and Mauritidites franciscoi before?) while others are “types” that are not formally described – mainly because in Amazonian sediments new, unseen palynomorphs pop up all the time. Indeed, this was the reason why I started the database in the first place: I was merely trying to keep up with the vast diversity that I encountered during sample counting.

Seeing the added value of having a digital record of the palynological diversity from the Amazon basin samples, my project supervisor, Carina Hoorn (UvA), encouraged me to publish the database online so others could also access it. I’d like to invite you to take a look. I hope it can maybe help you with identifying taxa or, who knows, linking taxa across the Amazon basin… if you do, please let me know!

…or maybe it will have you rejoice in the huge diversity and alien beauty of pollen morphology, just as it rejoiced me as I was working through my (seemingly endless) samples.

REFERENCES

Teunissen van Manen, Milan (2015a): Miocene Amazonian Palynological Diversity – Image files. figshare. http://dx.doi.org/10.6084/m9.figshare.1396453

Teunissen van Manen, Milan (2015b): Miocene Amazonian palynological diversity database – Entries record. figshare. http://dx.doi.org/10.6084/m9.figshare.1396562

This project was conducted with Research Group of Palaeoecology & Landscape Ecology, part of the Institute for Biodiversity & Ecosystem Dynamics.

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