World's Best Scientists 2026 revealed!
Jeffrey M. Welker

Jeffrey M. Welker

Award Badge
Ecology and Evolution
Finland
2026

D-Index & Metrics

Ecology and Evolution

D-Index
76
Citations
30165
World Ranking
984
National Ranking
9

Research.com Recognitions

  • 2026 - Research.com Ecology and Evolution in Finland Leader Award
  • 2025 - Research.com Ecology and Evolution in Finland Leader Award

Overview

Jeffrey M. Welker is a researcher affiliated with the University of Oulu in Finland. Their scholarly work primarily spans the fields of Earth and Planetary Sciences and Environmental Science, with notable contributions to subfields such as Atmospheric Science, Ecology, Global and Planetary Change, Environmental Chemistry, and Geochemistry and Petrology.

The scientist's research extensively covers topics that include Climate change and permafrost, Cryospheric studies and observations, Geology and Paleoclimatology Research, Arctic and Antarctic ice dynamics, Isotope Analysis in Ecology, Methane Hydrates and Related Phenomena, and Groundwater and Isotope Geochemistry.

Jeffrey M. Welker has authored and co-authored multiple scientific papers published in various established venues. Some recent publications include:

  • Winters are changing: snow effects on Arctic and alpine tundra ecosystems (2022, Arctic Science)
  • Experimental warming differentially affects vegetative and reproductive phenology of tundra plants (2021, Nature Communications)
  • Arctic sea-ice loss fuels extreme European snowfall (2021, Nature Geoscience)
  • Winter snow and spring temperature have differential effects on vegetation phenology and productivity across Arctic plant communities (2020, Global Change Biology)
  • Improved high-resolution global and regionalized isoscapes of δ18O, δ2H and d-excess in precipitation (2021, Hydrological Processes)

The researcher frequently publishes in venues such as The Science of The Total Environment, Zenodo (CERN European Organization for Nuclear Research), Hydrological Processes, Water Resources Research, and Elementa Science of the Anthropocene.

Collaboration is a notable aspect of their work, with frequent co-authors including Eric S. Klein, Hannu Marttila, Hannah Bailey, Kaisa-Riikka Mustonen, and A. Joshua Leffler.

Best Publications

  • Evidence and implications of recent climate change in northern Alaska and other arctic regions.

    Larry D. Hinzman;Neil D. Bettez;W. Robert Bolton;F. Stuart Chapin

  • Role of Land-Surface Changes in Arctic Summer Warming

    F. S. Chapin;M. Sturm;Mark C. Serreze;J.P. McFadden

  • Shrub expansion in tundra ecosystems: dynamics, impacts and research priorities

    Isla H Myers-Smith;Isla H Myers-Smith;Bruce C Forbes;Martin Wilmking;Martin Hallinger

  • Ecological Dynamics Across the Arctic Associated with Recent Climate Change

    Eric Post;Eric Post;Mads C. Forchhammer;M. Syndonia Bret-Harte;Terry V. Callaghan;Terry V. Callaghan

  • Quantifying global soil carbon losses in response to warming

    Thomas W. Crowther;Katherine E.O. Todd-Brown;Clara W. Rowe;William R. Wieder

  • RESPONSES OF TUNDRA PLANTS TO EXPERIMENTAL WARMING:META‐ANALYSIS OF THE INTERNATIONAL TUNDRA EXPERIMENT

    A. M. Arft;M. D. Walker;J. Gurevitch;J. M. Alatalo

  • Plot-scale evidence of tundra vegetation change and links to recent summer warming.

    Sarah C. Elmendorf;Gregory H.R. Henry;Robert D. Hollister;Robert G. Björk

  • Global patterns of foliar nitrogen isotopes and their relationships with climate, mycorrhizal fungi, foliar nutrient concentrations, and nitrogen availability

    Joseph M. Craine;Andrew J. Elmore;Marcos P. M. Aidar;Mercedes Bustamante

  • The role of topography on catchment-scale water residence time

    K.J. McGuire;K.J. McGuire;Jeffery J. McDonnell;M. Weiler;C. Kendall

  • Winter Biological Processes Could Help Convert Arctic Tundra to Shrubland

    Matthew Sturm;Josh Schimel;Gary Michaelson;Jeffrey M. Welker

  • Increased snow depth affects microbial activity and nitrogen mineralization in two Arctic tundra communities

    Joshua P Schimel;Carol Bilbrough;Jeffery M Welker

  • Global negative vegetation feedback to climate warming responses of leaf litter decomposition rates in cold biomes

    Johannes H. C. Cornelissen;Peter M. van Bodegom;Rien Aerts;Terry V. Callaghan

  • Overview of the MOSAiC expedition—Atmosphere

    Unknown

  • Substantial proportion of global streamflow less than three months old

    Scott Jasechko;James W. Kirchner;James W. Kirchner;Jeffrey M. Welker;Jeffrey J. McDonnell;Jeffrey J. McDonnell;Jeffrey J. McDonnell

  • The pronounced seasonality of global groundwater recharge

    Scott Jasechko;S. Jean Birks;Tom Gleeson;Yoshihide Wada

  • Spatial distribution and seasonal variation in 18O/16O of modern precipitation and river water across the conterminous USA

    Andrea Dutton;Andrea Dutton;Bruce H. Wilkinson;Jeffrey M. Welker;Gabriel J. Bowen

  • Large loss of CO2 in winter observed across the northern permafrost region

    Susan M. Natali;Jennifer D. Watts;Brendan M. Rogers;Stefano Potter

  • TUNDRA CO2 FLUXES IN RESPONSE TO EXPERIMENTAL WARMING ACROSS LATITUDINAL AND MOISTURE GRADIENTS

    Steven F. Oberbauer;Craig E. Tweedie;Jeff M. Welker;Jace T. Fahnestock

  • Long-term experimental manipulation of winter snow regime and summer temperature in arctic and alpine tundra

    M. D. Walker;D. A. Walker;J. M. Welker;J. M. Welker;A. M. Arft

  • Isotopic (δ18O) characteristics of weekly precipitation collected across the USA : an initial analysis with application to water source studies

    J. M Welker

  • Evidence and Implications of Recent Climate Change in Northern Alaska and Other Arctic Regions

    L. D. Hinzman;N. Bettez;W. R. Bolton;F. S. Chapin

Frequent Co-Authors

Patrick F. Sullivan
Patrick F. Sullivan University of Alaska Anchorage
Steven F. Oberbauer
Steven F. Oberbauer Florida International University
Claudia I. Czimczik
Claudia I. Czimczik University of California, Irvine
Marilyn D. Walker
Marilyn D. Walker Independent Scientist / Consultant, US
József Geml
József Geml Hungarian Academy of Sciences
Robert D. Hollister
Robert D. Hollister Grand Valley State University
Erik Smets
Erik Smets Naturalis Biodiversity Center
Bo Elberling
Bo Elberling University of Copenhagen
Eric Post
Eric Post University of California, Davis
Gabriel J. Bowen
Gabriel J. Bowen University of Utah

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

As the demand for qualified professionals in Ecology and Evolution grows, students are increasingly exploring flexible education options. Online degrees have become a popular pathway, offering accessibility and a wide range of programs. When choosing a program, it’s important to compare institutions, such as considering which school is better snhu vs wgu for your academic and career goals.

For those interested in advancing their credentials, bridge programs like online bsn to msn programs provide a seamless transition to higher qualifications. It’s also crucial to ensure that the chosen institution is reputable; seeking out options from nonprofit online universities can help guarantee high standards and recognized degrees.

Additionally, prospective students with a military background may benefit from institutions recognized among online military friendly colleges. These universities often provide dedicated support services, flexible scheduling, and financial benefits tailored to veterans and active-duty service members.

Exploring these flexible pathways can help launch or accelerate a career in Ecology and Evolution, whether you are just starting or aiming for advanced roles in the field.

Best Scientists Citing Jeffrey M. Welker

Trending Scientists