World's Best Scientists 2026 revealed!

D-Index & Metrics

Environmental Sciences

D-Index
39
Citations
7306
World Ranking
8285
National Ranking
2959

Overview

Brent R. Helliker is affiliated with the University of Pennsylvania in the United States and conducts research primarily in the fields of Environmental Science and Agricultural and Biological Sciences. Their work spans several subfields, including Global and Planetary Change, Plant Science, Nature and Landscape Conservation, Ecology, and Atmospheric Science.

The main topics explored in Helliker's research cover Plant Water Relations and Carbon Dynamics, Ecology and Vegetation Dynamics Studies, Remote Sensing in Agriculture, Species Distribution and Climate Change, Groundwater and Isotope Geochemistry, Plant responses to water stress, and Plant Taxonomy and Phylogenetics.

Helliker has contributed to multiple publications in notable venues, frequently publishing in New Phytologist and Proceedings of the National Academy of Sciences. Other publication venues include bioRxiv (Cold Spring Harbor Laboratory), Plant Cell & Environment, and Research Square.

  • New Phytologist
  • Proceedings of the National Academy of Sciences
  • bioRxiv (Cold Spring Harbor Laboratory)
  • Plant Cell & Environment
  • Research Square (Research Square)

Recent papers by Helliker include:

  • Stem water cryogenic extraction biases estimation in deuterium isotope composition of plant source water, 2020, Proceedings of the National Academy of Sciences
  • No evidence of canopy-scale leaf thermoregulation to cool leaves below air temperature across a range of forest ecosystems, 2022, Proceedings of the National Academy of Sciences
  • Imaging canopy temperature: shedding (thermal) light on ecosystem processes, 2021, New Phytologist
  • MicroRNA156-mediated changes in leaf composition lead to altered photosynthetic traits during vegetative phase change, 2020, New Phytologist
  • Lineage-based functional types: characterising functional diversity to enhance the representation of ecological behaviour in Land Surface Models, 2020, New Phytologist

Frequent collaborators in Helliker's research include Christopher J. Still, Daniel M. Griffith, Stephanie Pau, Jesse B. Nippert, and Che-Ling Ho.

Best Publications

  • C 4 photosynthesis, atmospheric CO 2 , and climate

    James R. Ehleringer;Thure E. Cerling;Brent R. Helliker

  • A re-evaluation of carbon storage in trees lends greater support for carbon limitation to growth

    Erin Wiley;Brent Helliker

  • Stable isotopes in leaf water of terrestrial plants.

    Lucas A. Cernusak;Margaret M. Barbour;Stefan K. Arndt;Alexander W. Cheesman

  • Methane flux in non-wetland soils in response to nitrogen addition: a meta-analysis.

    E. L. Aronson;B. R. Helliker

  • Subtropical to boreal convergence of tree-leaf temperatures

    Brent R. Helliker;Suzanna L. Richter

  • Stem water cryogenic extraction biases estimation in deuterium isotope composition of plant source water

    Yongle Chen;Brent R. Helliker;Xianhui Tang;Fang Li

  • Establishing a grassland signature in veins: 18O in the leaf water of C3 and C4 grasses.

    Brent R. Helliker;James R. Ehleringer

  • The energetic and carbon economic origins of leaf thermoregulation

    Sean T. Michaletz;Sean T. Michaletz;Michael D. Weiser;Nate G. McDowell;Jizhong Zhou;Jizhong Zhou;Jizhong Zhou

  • Plant Thermoregulation: Energetics, Trait-Environment Interactions, and Carbon Economics.

    Sean T. Michaletz;Sean T. Michaletz;Michael D. Weiser;Jizhong Zhou;Jizhong Zhou;Jizhong Zhou;Michael Kaspari;Michael Kaspari

  • The effects of defoliation on carbon allocation: can carbon limitation reduce growth in favour of storage?

    Erin Wiley;Sarah Huepenbecker;Brenda B Casper;Brent R Helliker

  • Hydrogen isotope ratios of leaf wax n-alkanes in grasses are insensitive to transpiration

    Francesca A. McInerney;Brent R. Helliker;Katherine H. Freeman

  • Plant response to climate change varies with topography, interactions with neighbors, and ecotype.

    Pierre Liancourt;Laura A. Spence;Daniel S. Song;Ariuntsetseg Lkhagva

  • Differential 18O enrichment of leaf cellulose in C3 versus C4 grasses

    Brent R. Helliker;James R. Ehleringer

  • Thermal Imaging in Plant and Ecosystem Ecology: Applications and Challenges

    Christopher Still;Rebecca L. Powell;Donald Aubrecht;Youngil Kim

  • Environmental impacts on the diversity of methane-cycling microbes and their resultant function

    Emma L. Aronson;Emma L. Aronson;Steven D. Allison;Brent R. Helliker

  • Continuous, long-term, high-frequency thermal imaging of vegetation: Uncertainties and recommended best practices

    Donald M. Aubrecht;Brent R. Helliker;Michael L. Goulden;Dar A. Roberts

  • No evidence of canopy-scale leaf thermoregulation to cool leaves below air temperature across a range of forest ecosystems

    Unknown

  • A rapid and precise method for sampling and determining the oxygen isotope ratio of atmospheric water vapor

    Brent R. Helliker;John S. Roden;Craig Cook;James R. Ehleringer

  • Stable Isotopes and Carbon Cycle Processes in Forests and Grasslands

    J. R. Ehleringer;D. R. Bowling;L. B. Flanagan;J. Fessenden

  • Transpiration rate relates to within- and across-species variations in effective path length in a leaf water model of oxygen isotope enrichment

    Xin Song;Margaret M. Barbour;Margaret M. Barbour;Graham D. Farquhar;David R. Vann

  • The contribution of C3 and C4 plants to the carbon cycle of a tallgrass prairie: an isotopic approach

    Christopher J. Still;Christopher J. Still;Joseph A. Berry;Miquel Ribas-Carbo;Miquel Ribas-Carbo;Brent R. Helliker;Brent R. Helliker

Frequent Co-Authors

Joseph A. Berry
Joseph A. Berry Carnegie Institution for Science
Christopher J. Still
Christopher J. Still Oregon State University
James R. Ehleringer
James R. Ehleringer University of Utah
Brenda B. Casper
Brenda B. Casper University of Pennsylvania
Jizhong Zhou
Jizhong Zhou University of Oklahoma
Michael L. Goulden
Michael L. Goulden University of California, Irvine
Pierre Liancourt
Pierre Liancourt University of Tübingen
Peter S. Petraitis
Peter S. Petraitis University of Pennsylvania
William J. Riley
William J. Riley Lawrence Berkeley National Laboratory
Ankur R. Desai
Ankur R. Desai University of Wisconsin–Madison

If you think any of the details on this page are incorrect, let us know.

Report an issue

We appreciate your kind effort to assist us to improve this page, it would be helpful providing us with as much detail as possible in the text box below:

Related Online Degrees & Career Pathways

Exploring Environmental Sciences in the USA opens doors to diverse online degree options and career pathways. For those interested in advancing social impact through environmental work, a dsw program can provide specialized skills in social work with an environmental focus, addressing community and policy challenges.

Students looking for flexibility might consider a low cost online general studies degree, which offers a broad education foundation with customizable courses applicable to environmental careers.

For those seeking a less demanding academic route, some of the easy bachelor degrees provide opportunities to earn credentials efficiently while still gaining relevant skills for entry-level roles in environmental fields.

Specifically tailored to earth science enthusiasts, the availability of a geologist degree online allows students to study geology and geoscience remotely, preparing them for careers in natural resource management, environmental consulting, and research.

Best Scientists Citing Brent R. Helliker

Trending Scientists