Results 171 to 180 of about 43,419 (259)

Patterns of Interploidy Admixture in Polyploid Complexes: Insights From Thymus Sect. Mastichina (Lamiaceae)

Molecular Ecology, Volume 35, Issue 3, February 2026.
ABSTRACT Understanding gene flow between ploidy levels in polyploid complexes is essential for species delimitation and conservation. This study explores evolutionary dynamics in the polyploid complex Thymus sect. Mastichina (Lamiaceae), comprising three taxa: T. mastichina subsp. mastichina, T. mastichina subsp.
Francisco José García‐Cárdenas, María Ángeles Ortiz, José Carlos del Valle, David Doblas‐Pruvost, Manuel de la Estrella, Diego Nieto‐Lugilde, Lisa Pokorny, Regina Berjano   +7 more
wiley   +1 more source

Extensive fluvial surfaces at the East Antarctic margin have modulated ice-sheet evolution. [PDF]

Nat Geosci
Paxman GJG, Jamieson SSR, Ross N, Bentley MJ, Carter CM, Jordan TA, Cui X, Lang S, Sugden DE, Siegert MJ.   +9 more
europepmc   +1 more source

The regional evolution of a dryland fluvio‐aeolian and lacustrine succession in response to allocyclic forcing: insights from the Early Permian Cutler Group, Utah, USA

Sedimentology, Volume 73, Issue 2, Page 297-354, February 2026.
ABSTRACT Preserved allocyclic signatures in the rock record often reflect basin‐scale climatic variability and serve as key proxies for correlating ancient dryland successions. The notion of climate cyclicity, however, remains largely untested on regionally constrained, outcrop‐calibrated studies.
Oliver Button, Jack G. Connor, Ross P. Pettigrew, Ben A. Kilhams, John A. Howell   +4 more
wiley   +1 more source

Cave records reveal recent origin of North America's deepest canyon. [PDF]

Proc Natl Acad Sci U S A
Morriss MC, Mitchell NA, Yanites BJ, Staisch LM, Korup O.   +4 more
europepmc   +1 more source

Characterizing Martian Primary Crustal Compositions With Gamma Ray Spectroscopy

Geophysical Research Letters, Volume 53, Issue 2, 28 January 2026.
Abstract Mars's global‐scale chemical maps of the midlatitudes, derived from Mars Odyssey gamma and neutron spectroscopy, have constrained martian geology across a multitude of processes. However, the chemical maps are often used to analyze pre‐defined regions based on mapped geology and/or mineralogy.
Carlos E. Gary‐Bicas, Suniti Karunatillake, James J. Wray, Scott M. Perl, Alka Rani, Emmy B. Hughes   +5 more
wiley   +1 more source

Evolution of the Danube River's islands on the Bulgaria-Romania border over the last century. [PDF]

PLoS One
Ioana-Toroimac G, Vîrghileanu M.
europepmc   +1 more source

Extreme Potomac Floods at Washington D.C. During the Past 500 Years

Geophysical Research Letters, Volume 53, Issue 2, 28 January 2026.
Abstract Washington D.C. faces one of the highest 100‐year flood risks of any major city along the U.S. East Coast. In addition to storm‐surge inundation during hurricanes and nor'easters, water‐level observations for Washington are strongly skewed by major floods on the Potomac River.
Michael Toomey, Thomas Cronin, Jessica Rodysill, Julia Seidenstein, Debra Willard   +4 more
wiley   +1 more source

Reservoir Regulation has Brought a Classic River‐Dominated Delta Under Human Control

Geophysical Research Letters, Volume 53, Issue 1, 16 January 2026.
Abstract Damming of wild rivers has trapped vast quantities of sediment that would otherwise nourish deltas, causing severe sediment deficits and accelerating delta erosion worldwide. The Yellow River Delta (YRD), once prograding seaward at ∼10 km2/yr, began retreating at −5.6 km2/yr following completion of the Xiaolangdi Reservoir.
Xiao Wu, Houjie Wang, Jaia Syvitski, Yoshiki Saito, Naishuang Bi, Jeffrey Nittrouer   +5 more
wiley   +1 more source

Different geomorphic processes control suspended sediment and bedload export from glaciers. [PDF]

Nat Commun
Delaney I, Lardet F, Jenkin M, Mancini D, Lane SN.   +4 more
europepmc   +1 more source

Catchment rehabilitation and hydro-geomorphic characteristics of mountain streams in the western Rift Valley escarpment of Northern Ethiopia [PDF]

, 2016
Asfaha, Tesfaalem-Ghebreyohannes, Frankl, Amaury, Haile, Mitiku, Nyssen, Jan   +3 more
core   +2 more sources