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Items: 1 to 50 of 57

1.

DOC export is exceeded by C fixation in May Creek: A late-successional watershed of the Copper River Basin, Alaska.

Tomco PL, Zulueta RC, Miller LC, Zito PA, Campbell RW, Welker JM.

PLoS One. 2019 Nov 20;14(11):e0225271. doi: 10.1371/journal.pone.0225271. eCollection 2019.

2.

Expanding the CRISPR Toolbox with ErCas12a in Zebrafish and Human Cells.

Wierson WA, Simone BW, WareJoncas Z, Mann C, Welker JM, Kar B, Emch MJ, Friedberg I, Gendron WAC, Barry MA, Clark KJ, Dobbs DL, McGrail MA, Ekker SC, Essner JJ.

CRISPR J. 2019 Nov 19. doi: 10.1089/crispr.2019.0026. [Epub ahead of print]

PMID:
31742435
3.

The Missing Angle: Ecosystem Consequences of Phenological Mismatch.

Beard KH, Kelsey KC, Leffler AJ, Welker JM.

Trends Ecol Evol. 2019 Oct;34(10):885-888. doi: 10.1016/j.tree.2019.07.019. Epub 2019 Aug 23.

PMID:
31451305
4.

The Gene Sculpt Suite: a set of tools for genome editing.

Mann CM, Martínez-Gálvez G, Welker JM, Wierson WA, Ata H, Almeida MP, Clark KJ, Essner JJ, McGrail M, Ekker SC, Dobbs D.

Nucleic Acids Res. 2019 Jul 2;47(W1):W175-W182. doi: 10.1093/nar/gkz405.

5.

Migratory goose arrival time plays a larger role in influencing forage quality than advancing springs in an Arctic coastal wetland.

Beard KH, Choi RT, Leffler AJ, Carlson LG, Kelsey KC, Schmutz JA, Welker JM.

PLoS One. 2019 Mar 13;14(3):e0213037. doi: 10.1371/journal.pone.0213037. eCollection 2019.

6.

Author Correction: Warming shortens flowering seasons of tundra plant communities.

Prevéy JS, Rixen C, Rüger N, Høye TT, Bjorkman AD, Myers-Smith IH, Elmendorf SC, Ashton IW, Cannone N, Chisholm CL, Clark K, Cooper EJ, Elberling B, Fosaa AM, Henry GHR, Hollister RD, Jónsdóttir IS, Klanderud K, Kopp CW, Lévesque E, Mauritz M, Molau U, Natali SM, Oberbauer SF, Panchen ZA, Post E, Rumpf SB, Schmidt NM, Schuur E, Semenchuk PR, Smith JG, Suding KN, Totland Ø, Troxler T, Venn S, Wahren CH, Welker JM, Wipf S.

Nat Ecol Evol. 2019 Apr;3(4):709. doi: 10.1038/s41559-019-0859-5.

PMID:
30846874
7.

Temporal Trends of Persistent Organic Pollutants in Barents Sea Polar Bears ( Ursus maritimus) in Relation to Changes in Feeding Habits and Body Condition.

Lippold A, Bourgeon S, Aars J, Andersen M, Polder A, Lyche JL, Bytingsvik J, Jenssen BM, Derocher AE, Welker JM, Routti H.

Environ Sci Technol. 2019 Jan 15;53(2):984-995. doi: 10.1021/acs.est.8b05416. Epub 2018 Dec 26.

PMID:
30548071
8.

Warming shortens flowering seasons of tundra plant communities.

Prevéy JS, Rixen C, Rüger N, Høye TT, Bjorkman AD, Myers-Smith IH, Elmendorf SC, Ashton IW, Cannone N, Chisholm CL, Clark K, Cooper EJ, Elberling B, Fosaa AM, Henry GHR, Hollister RD, Jónsdóttir IS, Klanderud K, Kopp CW, Lévesque E, Mauritz M, Molau U, Natali SM, Oberbauer SF, Panchen ZA, Post E, Rumpf SB, Schmidt NM, Schuur E, Semenchuk PR, Smith JG, Suding KN, Totland Ø, Troxler T, Venn S, Wahren CH, Welker JM, Wipf S.

Nat Ecol Evol. 2019 Jan;3(1):45-52. doi: 10.1038/s41559-018-0745-6. Epub 2018 Dec 10. Erratum in: Nat Ecol Evol. 2019 Apr;3(4):709.

PMID:
30532048
9.

Delayed herbivory by migratory geese increases summer-long CO2 uptake in coastal western Alaska.

Leffler AJ, Beard KH, Kelsey KC, Choi RT, Schmutz JA, Welker JM.

Glob Chang Biol. 2019 Jan;25(1):277-289. doi: 10.1111/gcb.14473. Epub 2018 Nov 18.

PMID:
30295398
10.

Arctic plant ecophysiology and water source utilization in response to altered snow: isotopic (δ18O and δ2H) evidence for meltwater subsidies to deciduous shrubs.

Jespersen RG, Leffler AJ, Oberbauer SF, Welker JM.

Oecologia. 2018 Aug;187(4):1009-1023. doi: 10.1007/s00442-018-4196-1. Epub 2018 Jun 28.

PMID:
29955988
11.

Choose Your Poison-Space-Use Strategy Influences Pollutant Exposure in Barents Sea Polar Bears.

Tartu S, Aars J, Andersen M, Polder A, Bourgeon S, Merkel B, Lowther AD, Bytingsvik J, Welker JM, Derocher AE, Jenssen BM, Routti H.

Environ Sci Technol. 2018 Mar 6;52(5):3211-3221. doi: 10.1021/acs.est.7b06137. Epub 2018 Feb 13.

PMID:
29363970
12.

Emission Changes Dwarf the Influence of Feeding Habits on Temporal Trends of Per- and Polyfluoroalkyl Substances in Two Arctic Top Predators.

Routti H, Aars J, Fuglei E, Hanssen L, Lone K, Polder A, Pedersen ÅØ, Tartu S, Welker JM, Yoccoz NG.

Environ Sci Technol. 2017 Oct 17;51(20):11996-12006. doi: 10.1021/acs.est.7b03585. Epub 2017 Sep 29.

PMID:
28918622
13.

Diet and metabolic state are the main factors determining concentrations of perfluoroalkyl substances in female polar bears from Svalbard.

Tartu S, Bourgeon S, Aars J, Andersen M, Lone K, Jenssen BM, Polder A, Thiemann GW, Torget V, Welker JM, Routti H.

Environ Pollut. 2017 Oct;229:146-158. doi: 10.1016/j.envpol.2017.04.100. Epub 2017 Jun 3.

PMID:
28587979
14.

Corrigendum to "Sea ice-associated decline in body condition leads to increased concentrations of lipophilic pollutants in polar bears (Ursus maritimus) from Svalbard, Norway" [Sci. Total Environ. 576 (2017) 409-419].

Tartu S, Bourgeon S, Aars J, Andersen M, Polder A, Thiemann GW, Welker JM, Routti H.

Sci Total Environ. 2017 Oct 1;595:818. doi: 10.1016/j.scitotenv.2017.04.024. Epub 2017 Apr 13. No abstract available.

PMID:
28411564
15.

Pacific North American circulation pattern links external forcing and North American hydroclimatic change over the past millennium.

Liu Z, Tang Y, Jian Z, Poulsen CJ, Welker JM, Bowen GJ.

Proc Natl Acad Sci U S A. 2017 Mar 28;114(13):3340-3345. doi: 10.1073/pnas.1618201114. Epub 2017 Mar 13.

16.

Greater temperature sensitivity of plant phenology at colder sites: implications for convergence across northern latitudes.

Prevéy J, Vellend M, Rüger N, Hollister RD, Bjorkman AD, Myers-Smith IH, Elmendorf SC, Clark K, Cooper EJ, Elberling B, Fosaa AM, Henry GHR, Høye TT, Jónsdóttir IS, Klanderud K, Lévesque E, Mauritz M, Molau U, Natali SM, Oberbauer SF, Panchen ZA, Post E, Rumpf SB, Schmidt NM, Schuur EAG, Semenchuk PR, Troxler T, Welker JM, Rixen C.

Glob Chang Biol. 2017 Jul;23(7):2660-2671. doi: 10.1111/gcb.13619. Epub 2017 Feb 6.

PMID:
28079308
17.

Quantifying global soil carbon losses in response to warming.

Crowther TW, Todd-Brown KE, Rowe CW, Wieder WR, Carey JC, Machmuller MB, Snoek BL, Fang S, Zhou G, Allison SD, Blair JM, Bridgham SD, Burton AJ, Carrillo Y, Reich PB, Clark JS, Classen AT, Dijkstra FA, Elberling B, Emmett BA, Estiarte M, Frey SD, Guo J, Harte J, Jiang L, Johnson BR, Kröel-Dulay G, Larsen KS, Laudon H, Lavallee JM, Luo Y, Lupascu M, Ma LN, Marhan S, Michelsen A, Mohan J, Niu S, Pendall E, Peñuelas J, Pfeifer-Meister L, Poll C, Reinsch S, Reynolds LL, Schmidt IK, Sistla S, Sokol NW, Templer PH, Treseder KK, Welker JM, Bradford MA.

Nature. 2016 Nov 30;540(7631):104-108. doi: 10.1038/nature20150.

18.

Changes in composition and abundance of functional groups of arctic fungi in response to long-term summer warming.

Geml J, Semenova TA, Morgado LN, Welker JM.

Biol Lett. 2016 Nov;12(11). pii: 20160503.

19.

Sea ice-associated decline in body condition leads to increased concentrations of lipophilic pollutants in polar bears (Ursus maritimus) from Svalbard, Norway.

Tartu S, Bourgeon S, Aars J, Andersen M, Polder A, Thiemann GW, Welker JM, Routti H.

Sci Total Environ. 2017 Jan 15;576:409-419. doi: 10.1016/j.scitotenv.2016.10.132. Epub 2016 Oct 26. Erratum in: Sci Total Environ. 2017 Oct 1;595:818.

PMID:
27794227
20.

Tree-ring isotopes reveal drought sensitivity in trees killed by spruce beetle outbreaks in south-central Alaska.

Csank AZ, Miller AE, Sherriff RL, Berg EE, Welker JM.

Ecol Appl. 2016 Oct;26(7):2001-2020. doi: 10.1002/eap.1365. Epub 2016 Sep 21.

PMID:
27755740
21.

Geographical Area and Life History Traits Influence Diet in an Arctic Marine Predator.

Tartu S, Bourgeon S, Aars J, Andersen M, Ehrich D, Thiemann GW, Welker JM, Routti H.

PLoS One. 2016 May 19;11(5):e0155980. doi: 10.1371/journal.pone.0155980. eCollection 2016.

22.

GoldyTALEN Vectors with Improved Efficiency for Golden Gate TALEN Assembly.

Welker JM, Wierson WA, Wang Y, Poshusta TL, McNulty MS, Tisdale EE, Solin SL, Ekker SC, Clark KJ, McGrail M, Essner JJ.

Hum Gene Ther. 2016 Jun;27(6):423-4. doi: 10.1089/hum.2016.012. Epub 2016 May 6. No abstract available.

23.

Long-term increase in snow depth leads to compositional changes in arctic ectomycorrhizal fungal communities.

Morgado LN, Semenova TA, Welker JM, Walker MD, Smets E, Geml J.

Glob Chang Biol. 2016 Sep;22(9):3080-96. doi: 10.1111/gcb.13294. Epub 2016 Jun 8.

PMID:
27004610
24.

Arctic Vortex changes alter the sources and isotopic values of precipitation in northeastern US.

Puntsag T, Mitchell MJ, Campbell JL, Klein ES, Likens GE, Welker JM.

Sci Rep. 2016 Mar 14;6:22647. doi: 10.1038/srep22647.

25.

Winter precipitation and snow accumulation drive the methane sink or source strength of Arctic tussock tundra.

Blanc-Betes E, Welker JM, Sturchio NC, Chanton JP, Gonzalez-Meler MA.

Glob Chang Biol. 2016 Aug;22(8):2818-33. doi: 10.1111/gcb.13242. Epub 2016 May 9.

PMID:
26851545
26.

Coupled long-term summer warming and deeper snow alters species composition and stimulates gross primary productivity in tussock tundra.

Leffler AJ, Klein ES, Oberbauer SF, Welker JM.

Oecologia. 2016 May;181(1):287-97. doi: 10.1007/s00442-015-3543-8. Epub 2016 Jan 8.

PMID:
26747269
27.

Long-term warming alters richness and composition of taxonomic and functional groups of arctic fungi.

Geml J, Morgado LN, Semenova TA, Welker JM, Walker MD, Smets E.

FEMS Microbiol Ecol. 2015 Aug;91(8):fiv095. doi: 10.1093/femsec/fiv095. Epub 2015 Aug 6.

PMID:
26253509
28.

Arctic cyclone water vapor isotopes support past sea ice retreat recorded in Greenland ice.

Klein ES, Cherry JE, Young J, Noone D, Leffler AJ, Welker JM.

Sci Rep. 2015 May 29;5:10295. doi: 10.1038/srep10295.

29.

Long-term experimental warming alters community composition of ascomycetes in Alaskan moist and dry arctic tundra.

Semenova TA, Morgado LN, Welker JM, Walker MD, Smets E, Geml J.

Mol Ecol. 2015 Jan;24(2):424-37. doi: 10.1111/mec.13045. Epub 2015 Jan 10.

PMID:
25522194
30.

Summer temperature increase has distinct effects on the ectomycorrhizal fungal communities of moist tussock and dry tundra in Arctic Alaska.

Morgado LN, Semenova TA, Welker JM, Walker MD, Smets E, Geml J.

Glob Chang Biol. 2015 Feb;21(2):959-72. doi: 10.1111/gcb.12716. Epub 2014 Oct 8.

31.

Paired oxygen isotope records reveal modern North American atmospheric dynamics during the Holocene.

Liu Z, Yoshimura K, Bowen GJ, Buenning NH, Risi C, Welker JM, Yuan F.

Nat Commun. 2014 Apr 16;5:3701. doi: 10.1038/ncomms4701.

PMID:
24739337
32.

The tripartite motif coiled-coil is an elongated antiparallel hairpin dimer.

Sanchez JG, Okreglicka K, Chandrasekaran V, Welker JM, Sundquist WI, Pornillos O.

Proc Natl Acad Sci U S A. 2014 Feb 18;111(7):2494-9. doi: 10.1073/pnas.1318962111. Epub 2014 Feb 3.

33.
34.

Soil-plant N processes in a High Arctic ecosystem, NW Greenland are altered by long-term experimental warming and higher rainfall.

Schaeffer SM, Sharp E, Schimel JP, Welker JM.

Glob Chang Biol. 2013 Nov;19(11):3529-39. doi: 10.1111/gcb.12318. Epub 2013 Sep 11.

PMID:
23843128
35.

Phenological response of tundra plants to background climate variation tested using the International Tundra Experiment.

Oberbauer SF, Elmendorf SC, Troxler TG, Hollister RD, Rocha AV, Bret-Harte MS, Dawes MA, Fosaa AM, Henry GH, Høye TT, Jarrad FC, Jónsdóttir IS, Klanderud K, Klein JA, Molau U, Rixen C, Schmidt NM, Shaver GR, Slider RT, Totland Ø, Wahren CH, Welker JM.

Philos Trans R Soc Lond B Biol Sci. 2013 Jul 8;368(1624):20120481. doi: 10.1098/rstb.2012.0481. Print 2013 Aug 19.

36.

Complex carbon cycle responses to multi-level warming and supplemental summer rain in the high Arctic.

Sharp ED, Sullivan PF, Steltzer H, Csank AZ, Welker JM.

Glob Chang Biol. 2013 Jun;19(6):1780-92. doi: 10.1111/gcb.12149. Epub 2013 Mar 9.

PMID:
23504924
37.

Interactions among shrub cover and the soil microclimate may determine future Arctic carbon budgets.

Cahoon SM, Sullivan PF, Shaver GR, Welker JM, Post E, Holyoak M.

Ecol Lett. 2012 Dec;15(12):1415-22. doi: 10.1111/j.1461-0248.2012.01865.x. Epub 2012 Sep 3.

PMID:
22938383
38.

ENSO effects on δ18O, δ2H and d-excess values in precipitation across the U.S. using a high-density, long-term network (USNIP).

Welker JM.

Rapid Commun Mass Spectrom. 2012 Sep 15;26(17):1893-8. doi: 10.1002/rcm.6298.

PMID:
22847687
39.

Global assessment of experimental climate warming on tundra vegetation: heterogeneity over space and time.

Elmendorf SC, Henry GH, Hollister RD, Björk RG, Bjorkman AD, Callaghan TV, Collier LS, Cooper EJ, Cornelissen JH, Day TA, Fosaa AM, Gould WA, Grétarsdóttir J, Harte J, Hermanutz L, Hik DS, Hofgaard A, Jarrad F, Jónsdóttir IS, Keuper F, Klanderud K, Klein JA, Koh S, Kudo G, Lang SI, Loewen V, May JL, Mercado J, Michelsen A, Molau U, Myers-Smith IH, Oberbauer SF, Pieper S, Post E, Rixen C, Robinson CH, Schmidt NM, Shaver GR, Stenström A, Tolvanen A, Totland O, Troxler T, Wahren CH, Webber PJ, Welker JM, Wookey PA.

Ecol Lett. 2012 Feb;15(2):164-75. doi: 10.1111/j.1461-0248.2011.01716.x. Epub 2011 Dec 5.

PMID:
22136670
40.

Decomposition of old organic matter as a result of deeper active layers in a snow depth manipulation experiment.

Nowinski NS, Taneva L, Trumbore SE, Welker JM.

Oecologia. 2010 Jul;163(3):785-92. doi: 10.1007/s00442-009-1556-x. Epub 2010 Jan 19.

41.

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

Craine JM, Elmore AJ, Aidar MP, Bustamante M, Dawson TE, Hobbie EA, Kahmen A, Mack MC, McLauchlan KK, Michelsen A, Nardoto GB, Pardo LH, Peñuelas J, Reich PB, Schuur EA, Stock WD, Templer PH, Virginia RA, Welker JM, Wright IJ.

New Phytol. 2009;183(4):980-92. doi: 10.1111/j.1469-8137.2009.02917.x. Epub 2009 Jun 26.

42.

Increased snow facilitates plant invasion in mixedgrass prairie.

Blumenthlal D, Chimner RA, Welker JM, Morgan JA.

New Phytol. 2008 Jul;179(2):440-8.

43.

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

Cornelissen JH, van Bodegom PM, Aerts R, Callaghan TV, van Logtestijn RS, Alatalo J, Chapin FS, Gerdol R, Gudmundsson J, Gwynn-Jones D, Hartley AE, Hik DS, Hofgaard A, Jónsdóttir IS, Karlsson S, Klein JA, Laundre J, Magnusson B, Michelsen A, Molau U, Onipchenko VG, Quested HM, Sandvik SM, Schmidt IK, Shaver GR, Solheim B, Soudzilovskaia NA, Stenström A, Tolvanen A, Totland Ø, Wada N, Welker JM, Zhao X; M.O.L. Team.

Ecol Lett. 2007 Jul;10(7):619-27.

PMID:
17542940
44.

Climate and species affect fine root production with long-term fertilization in acidic tussock tundra near Toolik Lake, Alaska.

Sullivan PF, Sommerkorn M, Rueth HM, Nadelhoffer KJ, Shaver GR, Welker JM.

Oecologia. 2007 Sep;153(3):643-52. Epub 2007 May 12.

PMID:
17497180
45.

Modeling the effect of photosynthetic vegetation properties on the NDVI--LAI relationship.

Steltzer H, Welker JM.

Ecology. 2006 Nov;87(11):2765-72.

PMID:
17168021
47.

Role of land-surface changes in arctic summer warming.

Chapin FS 3rd, Sturm M, Serreze MC, McFadden JP, Key JR, Lloyd AH, McGuire AD, Rupp TS, Lynch AH, Schimel JP, Beringer J, Chapman WL, Epstein HE, Euskirchen ES, Hinzman LD, Jia G, Ping CL, Tape KD, Thompson CD, Walker DA, Welker JM.

Science. 2005 Oct 28;310(5748):657-60. Epub 2005 Sep 22.

48.

Warming chambers stimulate early season growth of an arctic sedge: results of a minirhizotron field study.

Sullivan PF, Welker JM.

Oecologia. 2005 Feb;142(4):616-26. Epub 2004 Nov 20.

PMID:
15688218
49.

Carbon and water relations of Salix monticola in response to winter browsing and changes in surface water hydrology: an isotopic study using δ13C and δ18O.

Alstad KP, Welker JM, Williams SA, Trlica MJ.

Oecologia. 1999 Aug;120(3):375-385. doi: 10.1007/s004420050870.

PMID:
28308014
50.

Differential water resource use by herbaceous and woody plant life-forms in a shortgrass steppe community.

Dodd MB, Lauenroth WK, Welker JM.

Oecologia. 1998 Dec;117(4):504-512. doi: 10.1007/s004420050686.

PMID:
28307675

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