Jeffrey M Welker
Overview
Explore the profile of Jeffrey M Welker including associated specialties, affiliations and a list of published articles.
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Articles
51
Citations
534
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Recent Articles
1.
Blanc-Betes E, Welker J, Gomez-Casanovas N, DeLucia E, Penuelas J, de Oliveira E, et al.
Sci Total Environ
. 2025 Jan;
962():178246.
PMID: 39808895
Changes in winter precipitation accompanying emerging climate trends lead to a major carbon-climate feedback from Arctic tundra. However, the mechanisms driving the direction, magnitude, and form (CO and CH) of...
2.
Lu C, Jan van Groenigen K, Gillespie M, Hollister R, Post E, Cooper E, et al.
New Phytol
. 2024 Aug;
245(2):523-533.
PMID: 39103987
Plant phenology, the timing of recurrent biological events, shows key and complex response to climate warming, with consequences for ecosystem functions and services. A key challenge for predicting plant phenology...
3.
Markkula I, Turunen M, Rikkonen T, Rasmus S, Koski V, Welker J
Ambio
. 2024 Apr;
53(8):1203-1217.
PMID: 38613746
Arctic regions are warming significantly faster than other parts of the globe, leading to changes in snow, ice and weather conditions, ecosystems and local cultures. These changes have brought worry...
4.
Dietz R, Letcher R, Aars J, Andersen M, Boltunov A, Born E, et al.
Sci Total Environ
. 2022 Mar;
829:154445.
PMID: 35304145
There has been a considerable number of reports on Hg concentrations in Arctic mammals since the last Arctic Monitoring and Assessment Programme (AMAP) effort to review biological effects of the...
5.
Lippold A, Boltunov A, Aars J, Andersen M, Blanchet M, Dietz R, et al.
Sci Total Environ
. 2022 Feb;
822:153572.
PMID: 35121036
We examined spatial variation in total mercury (THg) concentrations in 100 hair samples collected between 2008 and 2016 from 87 polar bears (Ursus maritimus) from the Norwegian (Svalbard Archipelago, western...
6.
Fraser D, Kim S, Welker J, Clementz M
Ecol Evol
. 2021 Dec;
11(23):17005-17021.
PMID: 34938488
Stable oxygen isotope (δO) 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...
7.
Jespersen R, Leffler A, Vaisanen M, Welker J
Glob Chang Biol
. 2021 Dec;
28(5):1853-1869.
PMID: 34870887
Dramatic increases in air temperature and precipitation are occurring in the High Arctic (>70°N), yet few studies have characterized the long-term responses of High Arctic ecosystems to the interactive effects...
8.
Hojlund Pedersen S, Bentzen T, Reinking A, Liston G, Elder K, Lenart E, et al.
Mov Ecol
. 2021 Sep;
9(1):48.
PMID: 34551820
Background: Caribou and reindeer across the Arctic spend more than two thirds of their lives moving in snow. Yet snow-specific mechanisms driving their winter ecology and potentially influencing herd health...
9.
Collins C, Elmendorf S, Hollister R, Henry G, Clark K, Bjorkman A, et al.
Nat Commun
. 2021 Jun;
12(1):3442.
PMID: 34117253
Rapid climate warming is altering Arctic and alpine tundra ecosystem structure and function, including shifts in plant phenology. While the advancement of green up and flowering are well-documented, it remains...
10.
Vaisanen M, Tuomi M, Bailey H, Welker J
Oecologia
. 2021 Jun;
196(3):839-849.
PMID: 34080051
The boreal forest consists of drier sunlit and moister-shaded habitats with varying moss abundance. Mosses control vascular plant-soil interactions, yet they all can also be altered by grazers. We determined...