Research output per year
Research output per year
Palynology, microscopy, machine learning, evolution
BA, Yale University
SM, The University of Chicago
PhD, The University of Chicago
Our lab studies the influence of climate on the composition, structure, and long-term evolution of lowland Neotropical plant communities. We use the fossil pollen record to document plant response to past climate variability. Because pollen and spores are widespread in the terrestrial sediment record, we are able to use these microscopic fossils to study long-term trends in plant ecology and evolution.
We seek to re-imagine the field of paleoecology and expand the range of ecological and evolutionary hypotheses that can be addressed by increasing the throughput, reproducibility, and taxonomic resolution of an unrecognized source of “big data”– the microfossil record. The focus of our current work is on developing microscopy and computer automation methods to improve the quantity and quality of pollen and spore counts. We are exploring different microscopy techniques, image analysis, and machine learning. With these new tools, we aim to develop larger and more comprehensive data sets that will expand the scope of paleoecological research. Our long-term goal is to transform the paleoecological analysis workflow, from imaging to classification to interpretation.
139 Morrill Hall
217-244-8049
Research output: Contribution to journal › Article › peer-review
Research output: Contribution to journal › Article › peer-review
Research output: Contribution to journal › Review article › peer-review
Research output: Contribution to journal › Article › peer-review
Research output: Contribution to journal › Article › peer-review
Haselhorst, D. S. (Creator), Tcheng, D. K. (Creator), Moreno, J. E. (Creator) & Punyasena, S. W. (Creator), University of Illinois Urbana-Champaign, Jun 16 2017
DOI: 10.13012/B2IDB-2059727_V1
Dataset
Haselhorst, D. S. (Creator), Tcheng, D. K. (Creator), Moreno, J. E. (Creator) & Punyasena, S. W. (Creator), University of Illinois Urbana-Champaign, Jun 16 2017
DOI: 10.13012/B2IDB-7821127_V1
Dataset
Haselhorst, D. S. (Creator), Tcheng, D. K. (Creator), Moreno, J. E. (Creator) & Punyasena, S. W. (Creator), University of Illinois Urbana-Champaign, Jun 16 2017
DOI: 10.13012/B2IDB-8658584_V1
Dataset
Haselhorst, D. (Creator), Moreno, J. E. (Creator), Tcheng, D. K. (Creator) & Punyasena, S. W. (Creator), University of Illinois Urbana-Champaign, May 20 2022
DOI: 10.13012/B2IDB-2176715_V1
Dataset
Punyasena, S. W. (Creator), Urban, M. A. (Creator), Adaime, M.-E. (Creator), Romero, I. (Creator) & Jaramillo, C. (Creator), University of Illinois Urbana-Champaign, Jul 14 2023
DOI: 10.13012/B2IDB-8817604_V1
Dataset