Surangi W Punyasena

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2020
2018

Cuticle and subsurface ornamentation of intact plant leaf epidermis under confocal and superresolution microscopy

Urban, M. A., Barclay, R. S., Sivaguru, M. & Punyasena, S. W., Feb 1 2018, In : Microscopy research and technique. 81, 2, p. 129-140 12 p.

Research output: Contribution to journalArticle

Nested cell strainers: An alternative method of preparing palynomorphs and charcoal

Urban, M. A., Romero, I. C., Sivaguru, M. & Punyasena, S. W., Jun 2018, In : Review of Palaeobotany and Palynology. 253, p. 101-109 9 p.

Research output: Contribution to journalArticle

2017

A morphometric analysis of vegetation patterns in dryland ecosystems

Mander, L., Dekker, S. C., Li, M., Mio, W., Punyasena, S. & Lenton, T. M., Feb 15 2017, In : Royal Society Open Science. 4, 2, 60443.

Research output: Contribution to journalArticle

The effects of seasonal and long-term climatic variability on Neotropical flowering phenology: An ecoinformatic analysis of aerial pollen data

Haselhorst, D. S., Tcheng, D. K., Moreno, J. E. & Punyasena, S. W., Sep 2017, In : Ecological Informatics. 41, p. 54-63 10 p.

Research output: Contribution to journalArticle

2016

Visual recognition software for binary classification and its application to spruce pollen identification

Tcheng, D. K., Nayak, A. K., Fowlkes, C. C. & Punyasena, S. W., Feb 2016, In : PloS one. 11, 2, e0148879.

Research output: Contribution to journalArticle

2015

Progress towards establishing collection standards for semi-automated pollen classification in forensic geo-historical location applications

Riley, K. C., Woodard, J. P., Hwang, G. M. & Punyasena, S. W., Oct 1 2015, In : Review of Palaeobotany and Palynology. 221, p. 117-127 11 p.

Research output: Contribution to journalArticle

2014

Accuracy and consistency of grass pollen identification by human analysts using electron micrographs of surface ornamentation

Mander, L., Baker, S. J., Belcher, C. M., Haselhorst, D. S., Rodriguez, J., Thorn, J. L., Tiwari, S., Urrego, D. H., Wesseln, C. J. & Punyasena, S. W., Aug 2014, In : Applications in Plant Sciences. 2, 8, 1400031.

Research output: Contribution to journalArticle

A neotropical miocene pollen database employing image-based search and semantic modeling

Han, J. G., Cao, H., Barb, A., Punyasena, S. W., Jaramillo, C. & Shyu, C. R., Aug 2014, In : Applications in Plant Sciences. 2, 8, 1400030.

Research output: Contribution to journalArticle

Approaches to advance scientific understanding of macrosystems ecology

Levy, O., Ball, B. A., Bond-Lamberty, B., Cheruvelil, K. S., Finley, A. O., Lottig, N. R., Punyasena, S. W., Xiao, J., Zhou, J., Buckley, L. B., Filstrup, C. T., Keitt, T. H., Kellner, J. R., Knapp, A. K., Richardson, A. D., Tcheng, D., Toomey, M., Vargas, R., Voordeckers, J. W., Wagner, T. & 1 others, Williams, J. W., Feb 1 2014, In : Frontiers in Ecology and the Environment. 12, 1, p. 15-23 9 p.

Research output: Contribution to journalArticle

Bioinformatic and biometric methods in plant morphology

Punyasena, S. W. & Smith, S. Y., Aug 2014, In : Applications in Plant Sciences. 2, 8, 1400071.

Research output: Contribution to journalArticle

Identifying the pollen of an extinct spruce species in the Late Quaternary sediments of the Tunica Hills region, south-eastern United States

Mander, L., Rodriguez, J., Mueller, P. G., Jackson, S. T. & Punyasena, S. W., Oct 1 2014, In : Journal of Quaternary Science. 29, 7, p. 711-721 11 p.

Research output: Contribution to journalArticle

Looking forward through the past: Identification of 50 priority research questions in palaeoecology

Seddon, A. W. R., Mackay, A. W., Baker, A. G., Birks, H. J. B., Breman, E., Buck, C. E., Ellis, E. C., Froyd, C. A., Gill, J. L., Gillson, L., Johnson, E. A., Jones, V. J., Juggins, S., Macias-Fauria, M., Mills, K., Morris, J. L., Nogués-Bravo, D., Punyasena, S. W., Roland, T. P., Tanentzap, A. J. & 49 others, Willis, K. J., Aberhan, M., van Asperen, E. N., Austin, W. E. N., Battarbee, R. W., Bhagwat, S., Belanger, C. L., Bennett, K. D., Birks, H. H., Bronk Ramsey, C., Brooks, S. J., de Bruyn, M., Butler, P. G., Chambers, F. M., Clarke, S. J., Davies, A. L., Dearing, J. A., Ezard, T. H. G., Feurdean, A., Flower, R. J., Gell, P., Hausmann, S., Hogan, E. J., Hopkins, M. J., Jeffers, E. S., Korhola, A. A., Marchant, R., Kiefer, T., Lamentowicz, M., Larocque-Tobler, I., López-Merino, L., Liow, L. H., Mcgowan, S., Miller, J. H., Montoya, E., Morton, O., Nogué, S., Onoufriou, C., Boush, L. P., Rodriguez-Sanchez, F., Rose, N. L., Sayer, C. D., Shaw, H. E., Payne, R., Simpson, G., Sohar, K., Whitehouse, N. J., Williams, J. W. & Witkowski, A., Jan 2014, In : Journal of Ecology. 102, 1, p. 256-267 12 p.

Research output: Contribution to journalArticle

On the taxonomic resolution of pollen and spore records of earth’s vegetation

Mander, L. & Punyasena, S. W., Oct 1 2014, In : International Journal of Plant Sciences. 175, 8, p. 931-945 15 p.

Research output: Contribution to journalArticle

2013

Classification of grass pollen through the quantitative analysis of surface ornamentation and texture

Mander, L., Li, M., Mio, W., Fowlkes, C. C. & Punyasena, S. W., Sep 18 2013, In : Proceedings of the Royal Society B: Biological Sciences. 280, 1770, 20131905.

Research output: Contribution to journalArticle

ENSO signature in botanical proxy time series extends terrestrial El Niño record into the (sub)tropics

Donders, T. H., Punyasena, S. W., De Boer, H. J. & Wagner-Cremer, F., Nov 16 2013, In : Geophysical Research Letters. 40, 21, p. 5776-5781 6 p.

Research output: Contribution to journalArticle

Semi-automated segmentation of pollen grains in microscopic images: A tool for three imaging modes

Johnsrud, S., Yang, H., Nayak, A. & Waduge Punyasena, S., Jun 4 2013, In : Grana. 52, 3, p. 181-191 11 p.

Research output: Contribution to journalArticle

Variability within the 10-Year Pollen Rain of a Seasonal Neotropical Forest and Its Implications for Paleoenvironmental and Phenological Research

Haselhorst, D. S., Moreno, J. E. & Punyasena, S. W., Jan 8 2013, In : PloS one. 8, 1, e53485.

Research output: Contribution to journalArticle

2012

Capturing the surface texture and shape of Pollen: A comparison of microscopy techniques

Sivaguru, M., Mander, L., Fried, G. & Punyasena, S. W., Jun 12 2012, In : PloS one. 7, 6, e39129.

Research output: Contribution to journalArticle

Classifying black and white spruce pollen using layered machine learning

Punyasena, S. W., Tcheng, D. K., Wesseln, C. & Mueller, P. G., Nov 1 2012, In : New Phytologist. 196, 3, p. 937-944 8 p.

Research output: Contribution to journalArticle

Probabilistic correlation of single stratigraphic samples: A generalized approach for biostratigraphic data

Punyasena, S. W., Jaramillo, C., De La Parra, F. & Du, Y., Feb 2012, In : AAPG Bulletin. 96, 2, p. 235-244 10 p.

Research output: Contribution to journalArticle

Tracking Taphonomic Regimes Using Chemical and Mechanical Damage of Pollen and Spores: An Example from the Triassic-Jurassic Mass Extinction

Mander, L., Wesseln, C. J., McElwain, J. C. & Punyasena, S. W., Nov 7 2012, In : PloS one. 7, 11, e49153.

Research output: Contribution to journalArticle

2011

A 45kyr palaeoclimate record from the lowland interior of tropical South America

Whitney, B. S., Mayle, F. E., Punyasena, S. W., Fitzpatrick, K. A., Burn, M. J., Guillen, R., Chavez, E., Mann, D., Pennington, R. T. & Metcalfe, S. E., Jul 1 2011, In : Palaeogeography, Palaeoclimatology, Palaeoecology. 307, 1-4, p. 177-192 16 p.

Research output: Contribution to journalArticle

2008

Quantitative estimates of glacial and Holocene temperature and precipitation change in lowland Amazonian Bolivia

Punyasena, S. W., Mayle, F. E. & McElwain, J. C., Sep 2 2008, In : Geology. 36, 8, p. 667-670 4 p.

Research output: Contribution to journalArticle

The influence of climate on the spatial patterning of Neotropical plant families

Punyasena, S. W., Eshel, G. & McElwain, J. C., Jan 1 2008, In : Journal of Biogeography. 35, 1, p. 117-130 14 p.

Research output: Contribution to journalArticle