Ph.D. Biology, University of California, Los Angeles (UCLA), 2013
Advisor: Glen M MacDonald
Department: Ecology and Evolutionary Biology (EEB)
B.S. Biology, Loyola Marymount University (LMU), Los Angeles, 2008
Smithsonian Environmental Research Center (SERC)
Ecologist: January 2018-Present
Postdoctoral Research Fellow: March 2015-January 2018
UCLA Institute of the Environment and Sustainability (IoES): Postdoctoral Scholar: September 2013–May 2015
UCLA EEB: Graduate Student Researcher and Teaching Assistant: July 2008–September 2013
LMU Biology Department: Undergraduate Researcher and Teaching Assistant: May 2005–June 2008
[23 articles in print since 2014]
Holmquist, J. R., Brown, L. N., & MacDonald, G. M. Localized Scenarios and Latitudinal Patterns of Vertical and Lateral Resilience of Tidal Marshes to Sea‐Level Rise in the Contiguous United States. Earth's Future, e2020EF001804. https://doi.org/10.1029/2020EF001804.
Holmquist, J. R., Schile-Beers, L., Buffington, K., Lu, M., Mozdzer, T. J., Riera, J., ... & Megonigal, J. P. (2021). Scalability and performance tradeoffs in quantifying relationships between elevation and tidal wetland plant communities. Marine Ecology Progress Series, 666, 57-72. https://doi.org/10.3354/meps13683.
Malhotra, A., Todd-Brown, K., Nave, L. E., Batjes, N. H., Holmquist, J. R., et al. (2019). The landscape of soil carbon data: emerging questions, synergies and databases. Progress in Physical Geography: Earth and Environment, 43(5), 707-719. https://doi.org/10.1177/0309133319873309.
Rogers, K., Kelleway, J. J., Saintilan, N., Megonigal, J. P., Adams, J. B., Holmquist, J. R., et al. (2019). Wetland carbon storage controlled by millennial-scale variation in relative sea-level rise. Nature, 567(7746), 91-95. https://doi.org/10.1038/s41586-019-0951-7
Holmquist, J.R. Windham-Myers, L., Bernal, B., Byrd, K.B., Crooks, S., Gonneea, M.E., Herold, N., Knox, S.H., Kroeger, K., McCombs, J., Megonigal, J.P., Meng, L., Morris, J.T., Sutton-Grier, A.E., Troxler, T.G., Weller, D. (2018). Uncertainty in U.S. Coastal Wetland National Greenhouse Gas Inventorying. Environmental Research Letters. https://doi.org/10.1088/1748-9326/aae157.
Gallego-Sala, A., Charman, D. et al., including Holmquist, J.R. (2018). Latitudinal limits to the predicted increase of the peatland carbon sink with warming. Nature Climate Change.
Holmquist, J. R., Windham-Myers, L., Bliss, N., Crooks, S., Morris, J. T., Megonigal, J. P., ... & Ferner, M. C. (2018). Accuracy and Precision of Tidal Wetland Soil Carbon Mapping in the Conterminous United States. Scientific Reports, 8(1), 9478. https://doi.org/10.1038/s41598-018-26948-7
Byrd, K. B., Ballanti, L., Thomas, N., Nguyen, D., Holmquist, J. R., Simard, M., & Windham-Myers, L. (2018). A remote sensing-based model of tidal marsh aboveground carbon stocks for the conterminous United States. ISPRS Journal of Photogrammetry and Remote Sensing, 139, 255-271.
Najjar, R. G., Herrmann, M., Alexander, et al including Holmquist J.R. (2018). Carbon budget of tidal wetlands, estuaries, and shelf waters of Eastern North America. Global Biogeochemical Cycles, 32(3), 389-416.
Thorne, K., MacDonald, G., Guntenspergen, G., Ambrose, R., Buffington, K., Dugger, B., ... & Holmquist, J. (2018). US Pacific coastal wetland resilience and vulnerability to sea-level rise. Science Advances, 4(2), eaao3270.
Rosencranz, J. A., Brown, L. N., Holmquist, J. R., Sanchez, Y., MacDonald, G. M., & Ambrose, R. F. (2017). The Role of Sediment Dynamics for Inorganic Accretion Patterns in Southern California’s Mediterranean-Climate Salt Marshes.Estuaries and Coasts,40(5), 1371-1384.
Loisel, J., van Bellen, S., Pelletier, L., Talbot, J., Hugelius, G., Karran, D., ... & Holmquist, J. (2017). Insights and issues with estimating northern peatland carbon stocks and fluxes since the Last Glacial Maximum.Earth-science reviews,165, 59-80.
MacDonald, G. M., Moser, K. A., Bloom, A. M., Potito, A. P., Porinchu, D. F., Holmquist, J. R., ... & Kremenetski, K. V. (2016). Prolonged California aridity linked to climate warming and Pacific sea surface temperature. Scientific Reports, 6, 33325.
Holmquist, J. R., Booth, R. K., & MacDonald, G. M. (2016). Boreal peatland water table depth and carbon accumulation during the Holocene thermal maximum, Roman Warm Period, and Medieval Climate Anomaly. Palaeogeography, Palaeoclimatology, Palaeoecology, 444, 15-27.
Holmquist, J. R., Finkelstein, S. A., Garneau, M., Massa, C., Yu, Z., & MacDonald, G. M. (2016). A comparison of radiocarbon ages derived from bulk peat and selected plant macrofossils in basal peat cores from circum-arctic peatlands. Quaternary Geochronology, 31, 53-61.
Philben, M., Holmquist, J., MacDonald, G., Duan, D., Kaiser, K., & Benner, R. (2015). Temperature, oxygen, and vegetation controls on decomposition in a James Bay peatland. Global Biogeochemical Cycles, 29(6), 729-743.
Willis, K. S., Beilman, D., Booth, R. K., Amesbury, M., Holmquist, J., & MacDonald, G. (2015). Peatland paleohydrology in the southern West Siberian Lowlands: Comparison of multiple testate amoeba transfer functions, sites, and Sphagnum δ13C values. The Holocene, 25(9), 1425-1436.
Holmquist, J. R., Reynolds, L., Brown, L. N., Southon, J. R., Simms, A. R., & MacDonald, G. M. (2015). Marine radiocarbon reservoir values in southern California estuaries: interspecies, latitudinal, and interannual variability. Radiocarbon, 57(3), 449-458.
Hargan, K. E., Rühland, K. M., Paterson, A. M., Finkelstein, S. A., Holmquist, J. R., MacDonald, G. M., ... & Smol, J. P. (2014). The influence of water-table depth and pH on the spatial distribution of diatom species in peatlands of the Boreal Shield and Hudson Plains, Canada.Botany,93(2), 57-74.
Hargan, K. E., Rühland, K. M., Paterson, A. M., Holmquist, J., MacDonald, G. M., Bunbury, J., ... & Smol, J. P. (2015). Long-term successional changes in peatlands of the Hudson Bay Lowlands, Canada inferred from the ecological dynamics of multiple proxies. The Holocene, 25(1), 92-107.
Holmquist, J. R., & MacDonald, G. M. (2014). Peatland succession and long-term apparent carbon accumulation in central and northern Ontario, Canada. The Holocene, 24(9), 1075-1089.
Loisel, J., Yu, Z., Beilman, D. W., Camill, P., Alm, J., Amesbury, M. J. et al including J.R. Holmquist (2014). A database and synthesis of northern peatland soil properties and Holocene carbon and nitrogen accumulation. The Holocene, 24(9), 1028-1042.
Holmquist, J. R., MacDonald, G. M., & Gallego-Sala, A. (2014). Peatland initiation, carbon accumulation, and 2 ka depth in the James Bay Lowland and adjacent regions. Arctic, Antarctic, and Alpine research, 46(1), 19-39.
Morris, J.T., K. Todd-Brown, J.R. Holmquist. [GitHub Repository] Cohort Theory Model. https://github.com/tilbud/rCTM
Holmquist, J.R., and L. Windham-Myers. 2021. Relative Tidal Marsh Elevation Maps with Uncertainty for Conterminous USA, 2010. ORNL DAAC, Oak Ridge, Tennessee, USA. https://doi.org/10.3334/ORNLDAAC/1844.
Holmquist, J., Brown, L. N., & MacDonald, G. M. (2021). Dataset: Localized Scenarios and Latitudinal Patterns of Vertical and Lateral Resilience of Tidal Marshes to Sea-Level Rise in the Contiguous United States (Version 1). The Smithsonian Institution. https://doi.org/10.25573/serc.12921746.v1.
Holmquist, J., Riera, J., Shile-Beers, L., & Megonigal, P. (2021). Elevation and Vegetation Data for the Global Change Research Wetland, Summer 2016 (Version 1). The Smithsonian Institution. https://doi.org/10.25573/serc.9589337.v1.
Holmquist, J.R., J. Riera, J.P. Megonigal, L. Shile-Beers, K.J. Buffington, and D.E. Weller. (2021). Digital Elevation Models for the Global Change Research Wetland, Maryland, USA, 2016. ORNL DAAC, Oak Ridge, Tennessee, USA. https://doi.org/10.3334/ORNLDAAC/1793
Megonigal, P., & Holmquist, J. (2021). 1999 CO2xCommunity Deep Root Biomass (Version 1). The Smithsonian Institution. https://doi.org/10.25573/serc.13073249.
Whigham, D., Holmquist, J., Ogburn, M., Goodison, M., McFarland, L., & Megonigal, P.. (2020). Dataset: 2015-2018 USA-MDA TMON Marsh Biomass Surveys (Version 2). The Smithsonian Institution. https://doi.org/10.25573/serc.12636404.v2.
Holmquist, J.R. Windham-Myers, L., Bernal, B., Byrd, K.B., Crooks, S. et al. (2019). Spatial Data on U.S. Coastal Wetland Greenhouse Gas Inventory Uncertainty. Oak Ridge, Tennessee, USA. https://doi.org/10.3334/ORNLDAAC/1650
Holmquist, J.R., M. Lonneman, D. Klinges (2019). The Coastal Carbon Atlas.
Holmquist, J.R., L. Windham-Myers, N. Bliss, S. Crooks, J.T. Morris, P.J. Megonigal, T. Troxler, D. Weller et al. (2019). Tidal Wetland Soil Carbon Stocks for the Conterminous United States, 2006-2010. ORNL DAAC, Oak Ridge, Tennessee, USA. https://doi.org/10.3334/ORNLDAAC/1612
Holmquist, J.R. (2018). [GitHub Repository] Coastal Wetland NGGI Sensitivity Analysis. https://github.com/Smithsonian/Coastal-Wetland-NGGI-Sensitivity-Analysis
Holmquist, J. R. et al. (2018). [Dataset:] Accuracy and Precision of Tidal Wetland Soil Carbon Mapping in the Conterminous United States: Public Soil Carbon Data Release. https://doi.org/10.25572/ccrcn/10088/35684.
Najjar, R., et al including Holmquist J.R. (2018). Mean Annual Fluxes of Carbon in Coastal Ecosystems of Eastern North America.ORNL DAAC. https://doi.org/10.3334/ORNLDAAC/1594
Byrd, K.B., Ballanti, L.R., Thomas, N.M., Nguyen, D.K., Holmquist, J.R. et al. (2017) Biomass/Remote Sensing dataset: 30m resolution tidal marsh biomass samples and remote sensing data for six regions in the conterminous United States: U.S. Geological Survey data release, https://doi.org/10.5066/F77943K8.
Byrd, K., McOwen, C., Weatherdon, L., Crooks, S., and Holmquist, J. (2018). [Book Chapter] Status of Tidal Marsh Mapping for Blue Carbon Inventories. A Blue Carbon Primer: The State of Coastal Wetland Carbon Science, Practice, and Policy. Eds. Windham-Meyers, L., Crooks, S., Troxler, T.
Thorne, K.M., MacDonald, G.M. et al. including Holmquist, J.R. (2016). [Open File Report] Effects of climate change on tidal marshes along a latitudinal gradient in California (No. 2016-1125). US Geological Survey.
Holmquist, J.R. (2013). [Ph.D. Dissertation] Holocene Peatland Carbon Accumulation, Ecology, and Hydrology in the Canadian James Bay Lowlands. University of California, Los Angeles.
[$1,784,264 awarded since 2017]
Coastal Carbon Research Coordination Network (CCRCN) Outreach: GitHub lessons for Soils Working Group (November 2018), R-Code lessons for Ocean Carbon & Biogeochemistry Lateral Flux Working Group (August 2018), Developed R-Code Lesson using CCRCN Soil Carbon Synthesis (July 2018; https://serc.si.edu/coastalcarbon/r-coding).
Data/Software Carpentry Instructor: Lead 2-Day Workshops at SERC (June 2021, June 2020, June 2019, March 2018), Training Completed (February 2018)
Undergraduate Research Mentor at SERC: Minjee Jung (Summer 2021), Rebecca Lee (Winter 2019), Lainey Reed (Summer 2019), Nicoletta Brazzola (Fall 2017), Jefferson Riera (Summer 2016)
Undergraduate Research Supervisor at UCLA: Justine Nikeitan (2014-2015), Tongwei Weng (Summer 2014), Breeanna Bergeron-Matsumoto (2014), Alvin Li (2011-2014), Maoqiao Mao (Summer 2013), Sam Geldin (2013), Julianne Lee, Michelle Lim, Loren Quintanar (2011-2012), Scott Guzman, Nikola Kondov, Karly Wagner (2010-2011), Luis Aguilar, Jennifer Kim (2009-2010), Siduo Zhang (Summer 2009)
Private Chemistry and Biology Tutor: 2012-2013
Teaching Assistant Positions at UCLA: Introduction to Environmental Science (Fall 2012), Plant Physiology (Spring 2012, Winter 2010), Introduction to Life Sciences (Winter 2012, Fall 2010, Spring 2009), Marine Biology (Fall 2010)
Class Reader at UCLA for Global Change Biology: Fall 2010
Teaching Assistant Positions at LMU: Coral Reef Ecology Study Abroad in Roatán, Honduras (Summer 2008), Field Botany (Spring 2008), General Ecology (Fall 2007)
Indicates more significant contribution to curriculum development.
Northern Research Fund: C$3,600, to support field research at Churchill Research Center: 2012
University of Utrecht: €5,000 for 3-month research fellowship: 2011
UCLA EEB: Departmental Fellowship: Fall 2008, Winter 2009, Summer 2009
LMU
Alan R. Sedoux Prize for Field and Marine Biology: 2008
Howard Towner Memorial Scholarship: 2007-2008
Rev. Alfred J. Kilp Memorial Scholarship: 2004
Holmquist JR. Update from the Coastal Carbon Network (2021). 7th Annual Global Change Research Wetland Symposium, Virtual.
Holmquist JR, Megonigal J Patrick (2020). Townhall: Updates from the Coastal Carbon Research Coordination Network: Year 3. American Geophysical Union (AGU), Virtual.
Holmquist JR, JP Megonigal (2019). [Town Hall] Updates from the Coastal Carbon Research Coordination Network: Year 2. AGU, San Francisco.
Holmquist JR (2019). Data-Model Integration for Forecasting Carbon Sequestration in Coastal Wetland Soils. Coastal Estuarine Research Foundation, Mobile AL.
Holmquist, JR (2019). [keynote] The Coastal Carbon Network. Society of Wetland Scientists 2019 Twitter Symposium. https://twitter.com/i/events/1193229520284766208?s=13
Holmquist, JR (2019). [invited] Mapping Wetland Restoration as a Natural Climate Solution. Bringing Wetlands to Market, Plymouth, MA.
Holmquist, JR (2019). Data-Model Integration for Forecasting Carbon Sequestration in Coastal Wetland Soils. Ecological Forecasting Initiative, D.C. (https://youtu.be/mwo1TIOiTmA)
Holmquist JR, JP Megonigal (2018). [Town Hall] Updates from the Coastal Carbon Research Coordination Network: Year 1. American Geophysical Union (AGU), D.C.
Holmquist JR, J Fargione, K Kroeger, JP Megonigal, D Weller, L Windham-Myers (2018). Opportunities for Wetland Greenhouse Gas Emission Reduction from Coastal States in the Contiguous U.S. AGU, D.C.
Holmquist JR (2018). Uncertainty in United States Greenhouse Gas Inventorying. NASA Carbon Monitoring Systems September Science Team meeting.
Holmquist JR (2018). Accuracy and Precision of Tidal Wetland Soil Carbon Mapping in the Conterminous United States. NASA Carbon Monitoring Systems July Science Team meeting.
Holmquist JR (2018). Counting in Muddy Waters. SERC Science and Coffee Lightning Talk Series, Edgewater MD.
Holmquist JR (2018). How a little bit of math and a lot of data synthesis can show us what our next blue carbon research project needs to be. 5th Annual GCReW Symposium Villanova University, PA.
Holmquist JR, J Tang, P Megonigal, S Crooks, J Ramos (2017). [Town Hall] Introducing a U.S.-based Research Coordination Network for Coastal Carbon. AGU, New Orleans, LA.
Holmquist JR et al. (2017). How much swamp are we talking here?: Propagating uncertainty about the area of coastal wetlands into the U.S. greenhouse gas inventory. AGU, New Orleans, LA.
Holmquist JR, J Riera, et al. (2017). [invited] Applying Coastal Marsh Resiliency Models at the Landscape-Scale Using Bias-Corrected Remotely-Sensed Elevation Data. Coastal & Estuarine Research Federation Annual Meeting, Providence, RI.
Holmquist JR, J Riera, et al. (2017). Coastal Wetland Soil Carbon Stocks Mapping and the Myth of Fingerprints: ‘I’ve Seen Them All and Man They’re All the Same’. 4th Annual Global Change Research Wetland Symposium, Edgewater, MD.
Holmquist JR (2016). [invited] A US ‘Blue’ Carbon Monitoring System: Soil Carbon Stocks, Fluxes and Uncertainties. Chesapeake Bay Sentinel Site Coalition Partners Quarterly Call.
Holmquist JR et al. (2016). [poster] Reducing Uncertainty and Bias in US Coastal Wetland Carbon Stock Estimates. AGU, San Francisco, CA.
Holmquist JR et al. (2016). [poster] Linking Satellite and Soil Data to Validate Coastal Wetland 'Blue Carbon' Inventories: Progress on Accounting for Carbon Stored in US Coastal Wetland Soils. NASA Carbon Monitoring Systems Science Team Meeting. National Center for Atmospheric Research, Boulder, CO.
Holmquist JR, J Riera et al. (2016). [invited] Limits to ‘Upscaling’ a Marsh Resiliency Model Using Remote Sensing. Coastal Wetland Change Workshop. Florida International University, Miami FL.
Holmquist JR (2016). [invited] Coastal Wetlands: Vulnerability and Value. Horn Point Lab, University of Maryland Center for Environmental Sciences, Cambridge, MD.