Zobrazeno 1 - 10
of 736
pro vyhledávání: '"M. Welker"'
Contribution of fluorescent primary biological aerosol particles to low-level Arctic cloud residuals
Autor:
G. Pereira Freitas, B. Kopec, K. Adachi, R. Krejci, D. Heslin-Rees, K. E. Yttri, A. Hubbard, J. M. Welker, P. Zieger
Publikováno v:
Atmospheric Chemistry and Physics, Vol 24, Pp 5479-5494 (2024)
Mixed-phase clouds (MPCs) are key players in the Arctic climate system due to their role in modulating solar and terrestrial radiation. Such radiative interactions rely, among other factors, on the ice content of MPCs, which is regulated by the avail
Externí odkaz:
https://doaj.org/article/abea4fb036704a90ab5ade06560cfbc2
Autor:
Keith M. Welker, Mylien Duong, Andrew Rakhshani, Macrina Dieffenbach, Peter Coleman, Jonathan Haidt
Publikováno v:
Journal of Social and Political Psychology, Vol 11, Iss 2, Pp 437-457 (2023)
Solving the most pressing problems of our time requires broad collaboration across political party lines. Yet, the United States is experiencing record levels of affective polarization (distrust of the opposing political party). In response to these
Externí odkaz:
https://doaj.org/article/f4c453b61c6643b581035f8ad0f54f05
Autor:
Clément F. Massé, Tamara A. Hiltunen, Gerhardus M. J. Lansink, Katja Holmala, Marja Isomursu, Ilpo Kojola, Jouni Aspi, Jeffery M. Welker
Publikováno v:
Frontiers in Ecology and Evolution, Vol 11 (2023)
Over the last hundred years, many large carnivore species have suffered range contractions, population losses, and habitat alterations that may be influencing their dietary preferences. To identify shifting isotopic niches and reconstruct past and pr
Externí odkaz:
https://doaj.org/article/c8508bf2b29649e3a6994e3105c91b64
Autor:
Hjalte M. R. Mann, Alexandros Iosifidis, Jane U. Jepsen, Jeffrey M. Welker, Maarten J. J. E. Loonen, Toke T. Høye
Publikováno v:
Remote Sensing in Ecology and Conservation, Vol 8, Iss 6, Pp 765-777 (2022)
Abstract The advancement of spring is a widespread biological response to climate change observed across taxa and biomes. However, the species level responses to warming are complex and the underlying mechanisms are difficult to disentangle. This is
Externí odkaz:
https://doaj.org/article/6bbf261b24b14481830e4fd923e6dce4
Autor:
Christian Rixen, Toke Thomas Høye, Petr Macek, Rien Aerts, Juha M. Alatalo, Jill T. Anderson, Pieter A. Arnold, Isabel C Barrio, Jarle W. Bjerke, Mats P. Björkman, Daan Blok, Gesche Blume-Werry, Julia Boike, Stef Bokhorst, Michele Carbognani, Casper T. Christiansen, Peter Convey, Elisabeth J. Cooper, J. Hans C. Cornelissen, Stephen J. Coulson, Ellen Dorrepaal, Bo Elberling, Sarah C. Elmendorf, Cassandra Elphinstone, T’ai G.W. Forte, Esther R. Frei, Sonya R. Geange, Friederike Gehrmann, Casey Gibson, Paul Grogan, Aud Helen Halbritter, John Harte, Gregory H.R. Henry, David W. Inouye, Rebecca E. Irwin, Gus Jespersen, Ingibjörg Svala Jónsdóttir, Ji Young Jung, David H. Klinges, Gaku Kudo, Juho Lämsä, Hanna Lee, Jonas J. Lembrechts, Signe Lett, Joshua Scott Lynn, Hjalte M.R. Mann, Mikhail Mastepanov, Jennifer Morse, Isla H. Myers-Smith, Johan Olofsson, Riku Paavola, Alessandro Petraglia, Gareth K. Phoenix, Philipp Semenchuk, Matthias B. Siewert, Rachel Slatyer, Marko J. Spasojevic, Katharine Suding, Patrick Sullivan, Kimberly L. Thompson, Maria Väisänen, Vigdis Vandvik, Susanna Venn, Josefine Walz, Robert Way, Jeffrey M. Welker, Sonja Wipf, Shengwei Zong
Publikováno v:
Arctic Science, Vol 8, Iss 3, Pp 572-608 (2022)
Snow is an important driver of ecosystem processes in cold biomes. Snow accumulation determines ground temperature, light conditions, and moisture availability during winter. It also affects the growing season’s start and end, and plant access to m
Externí odkaz:
https://doaj.org/article/3581b70ff4f9470eb08d15c65a09f42a
Publikováno v:
AGU Advances, Vol 4, Iss 4, Pp n/a-n/a (2023)
Abstract Snow is critically important to the energy budget, biogeochemistry, ecology, and people of the Arctic. While climate change continues to shorten the duration of the snow cover period, snow mass (the depth of the snow pack) has been increasin
Externí odkaz:
https://doaj.org/article/e8a177a7145d42a19228473e7162fb88
Autor:
Katharine C. Kelsey, Stine Højlund Pedersen, A. Joshua Leffler, Joseph O. Sexton, Jeffrey M. Welker
Publikováno v:
Ecosphere, Vol 14, Iss 5, Pp n/a-n/a (2023)
Abstract Climate change, including both increasing temperatures and changing snow regimes, is progressing rapidly in the Arctic, leading to changes in plant phenology and in the seasonal patterns of plant properties, such as tissue nitrogen (N) conte
Externí odkaz:
https://doaj.org/article/98378f2f2134423d96ee3f628b1b2df2
Autor:
Kimberly E. Samuels-Crow, Drew M. P. Peltier, Yao Liu, Jessica S. Guo, Jeffrey M. Welker, William R. L. Anderegg, George W. Koch, Christopher Schwalm, Marcy Litvak, John D. Shaw, Kiona Ogle
Publikováno v:
Frontiers in Forests and Global Change, Vol 6 (2023)
Forest dynamics in arid and semiarid regions are sensitive to water availability, which is becoming increasingly scarce as global climate changes. The timing and magnitude of precipitation in the semiarid southwestern U.S. (“Southwest”) has chang
Externí odkaz:
https://doaj.org/article/fcf4db5c49ae438ea64e819131714101
Publikováno v:
PLoS ONE, Vol 18, Iss 4, p e0285030 (2023)
The Normalized Difference Vegetation Index (NDVI), derived from reflected visible and infrared radiation, has been critical to understanding change across the Arctic, but relatively few ground truthing efforts have directly linked NDVI to structural
Externí odkaz:
https://doaj.org/article/8ac9353a9d37461c8e81887ed39a2498
Publikováno v:
Ecology and Evolution, Vol 11, Iss 23, Pp 17005-17021 (2021)
Abstract Stable oxygen isotope (δ18O) compositions from vertebrate tooth enamel are widely used as biogeochemical proxies for paleoclimate. However, the utility of enamel oxygen isotope values for environmental reconstruction varies among species. H
Externí odkaz:
https://doaj.org/article/74c8a036af724a8e9c3c123d5a8a74f6