Results 181 to 190 of about 1,094,470 (270)

Permafrost, Vol. 19 (Fall 1997)

, 1997
This issue of Permafrost was funded by grants from the Associated Students of the University of Alaska Fairbanks and from he Alaska State Council of the Arts.[Poetry] -- Bryan Moskop -- Bern Mulvey -- Alison Apotheker -- Joanne Hayhurst -- Marie Louise ...
Alaska Association for the Arts
core  

Tipping Points in Bacterial Richness Amplify Extracellular Enzyme Activities in Northern Peatlands

Global Change Biology, Volume 32, Issue 9, September 2026.
Using a trans‐Holarctic survey in Sphagnum‐dominated peatlands, we identify a critical bacterial biodiversity threshold. Below this threshold, ecosystem function shifts, increasing enzyme activities by 60%, potentially accelerating carbon turnover. This weakens the peatland carbon sink, emphasizing the need to safeguard diversity.
Vincent E. J. Jassey, Tristan Lafont Rapnouil, Marie Le Geay, Romain Walcker, Laure Gandois, Maialen Barret, Nicolas Fanin, Bjorn J. M. Robroek, Béatrice Lauga, Luke O. Andrews, Alix Badré Greuza, Mark R. Bakker, Guillaume Bertrand, Tobias Birkwald, Paulo A. V. Borges, Brian Branfireun, Francis Q. Brearley, Cécile Brousseau, Zhao‐Jun Bu, Jean‐François Carrias, Sarah Coffinet, Bruno Corbarra, Eduardo M. F. Dias, Ellen Dorrepaal, André‐Jean Francez, Yuwen Fu, Marvin Gabriel, Rosalina Gabriel, Stéphanie Gerin, Daniel Gilbert, Sébastien Gogo, Gustaf Granath, Emma Gray, Liam Heffernan, Thierry J. Heger, Sari Juutinen, Paul Kardol, Edgar Karofeld, Agata Klimkowska, Martin Küttim, Liisa Küttim, Olivia Kuuri‐Riutta, Terri Lacourse, Mariusz Lamentowicz, Gaël Le Roux, Zoë Lindo, Roy Mackenzie, Katarzyna Marcisz, Yuri A. Mazei, Natalia G. Mazei, Cândida M. F. Mendes, Edward A. D. Mitchell, Juanita Mora‐Gomez, Raphael Müller, Kathy Pouliot, Anna‐Helena Purre, Achim Quaiser, Brenda Riquelme‐del Río, Allison R. Rober, Line Rochefort, Ana C. Rodríguez, A. Britta K. Sannel, Fabian Seemann, Laurent Servière, Maria Strack, Graeme T. Swindles, Julie Talbot, Andrey N. Tsyganov, Eeva‐Stiina Tuittila, Alexander T. Tveit, Minna M. Väliranta, Kevin H. Wyatt, Henni Ylänne, Zicheng Yu, Evgeny A. Zarov, Samuel Hamard   +75 more
wiley   +1 more source

Large stocks of permafrost soil organic carbon and nitrogen in Arctic river deltas. [PDF]

Nat Commun
Fuchs M, Sachs T, Jongejans LL, Strauss J, Hugelius G, Frost GV, Jones BM, Kokelj SV, Kutzbach L, Nitze I, Overduin PP, Palmtag J, Ping CL, Pokrovsky OS, Rivkina E, Runge A, Schirrmeister L, Schwamborn G, Siewert MB, Treat C, Veremeeva A, Zubrzycki S, Grosse G.   +22 more
europepmc   +1 more source

Fossils as cultural heritage: Scientific, commercial and legislative issues

Geology Today, Volume 42, Issue 5, Page 263-272, September/October 2026.
Fossils are among the principal sources for understanding the history of life through ‘Deep Time’ and can inform projections of biotic responses to environmental change. Despite a widespread recognition of the scientific, historical and communication significance of fossils in our culture, their role as part of our cultural heritage is still far from ...
Federico Fanti, Rosa Maria Di Maggio, Laurance Donnelly, Robert Fitzpatrick, Fábio Augusto da Silva Salvador, Duncan Pirrie   +5 more
wiley   +1 more source

Microbial composition of archaeological middens: tracing human footprints through centuries in Greenland's ancient settlements. [PDF]

Front Microbiol
Maccario L, Otani S, Szarvas J, Mortensen LH, Elberling B, Møller KE, Madsen CEK, Aarestrup FM, Priemé A.   +8 more
europepmc   +1 more source

Sedimentary Ancient DNA Tracks Multi‐Kingdom Ecosystem Reorganizations Following Sequential Human Land Use at Crawford Lake

Molecular Ecology, Volume 35, Issue 17, September 2026.
ABSTRACT Crawford Lake has an exceptional stratigraphic record that began recording biannual (varved) sedimentation in the lake basin ~750 years ago, preserving evidence of shifting cultural zones and agricultural practices, from Late Woodland Period Indigenous agriculturalists to the impacts of industrialization during the late 19th century.
Tyler J. Murchie, Matthew V. Emery, Scott L. Cocker, Libby Natola, Melanie Kuch, Linda Y. Rutledge, Francine McCarthy, Michael F. J. Pisaric, Hendrik N. Poinar   +8 more
wiley   +1 more source

Elevation-dependent landsliding driven by climate change in the eastern Himalayan syntaxis. [PDF]

Natl Sci Rev
Zou C, Jansen JD, Dou X, Dai L, Xu Q, Fan X.   +5 more
europepmc   +1 more source

Museum Genomics of an Important Swedish Pollinator Reveals Population Stability Across Time

Molecular Ecology, Volume 35, Issue 18, September 2026.
ABSTRACT Anthropogenic activity has driven a rapid decline in wild pollinator populations over the last several decades. Understanding the genomic consequences of these declines and their long‐term effects requires establishing historical baselines for population diversity. To investigate this, we conducted temporal genomic analyses of a widespread and
Michael Mitschke, Ellen Karlsson, Jovanka Suess, Ibai Ugarte‐Zabaleta, Kalle Tunström, Björn Cederberg, Hege Vårdal, Matthew T. Webster, Christopher W. Wheat, David Díez‐del‐Molino   +9 more
wiley   +1 more source

Terrestrial Arthropod Responses to Arctic Cryosphere Degradation. [PDF]

Glob Chang Biol
Gillespie MAK, Høye TT.
europepmc   +1 more source

Multivariate Controls on Bed Turnover in Braided Rivers

Geophysical Research Letters, Volume 53, Issue 16, 28 August 2026.
Abstract Braided rivers with multiple threads exhibit variable, sometimes chaotic movements, making it difficult to characterize their mobility and identify the climate, tectonic, and land‐cover conditions that drive their behavior. Using 25 years of satellite imagery from 20 braided rivers, we measured “bed turnover”—successive conversions between ...
Safiya Alpheus, Elizabeth Hajek
wiley   +1 more source