Results 51 to 60 of about 10,559 (214)

A numerical approach to 14C wiggle-match dating of organic deposits: best fits and confidence intervals [PDF]

, 2002
14C wiggle-match dating (WMD) of peat deposits uses the non-linear relationship between 14C age and calendar age to match the shape of a sequence of closely spaced peat 14C dates with the 14C calibration curve.
Blaauw, Maarten,, Geel, Bas van,, Heuvelink, Gerard B.M.,, Mauquoy, Dmitri,, Plicht, Johannes van der,   +4 more
core   +3 more sources

Spatial distribution patterns and formation of global spermatophytes

Journal of Integrative Plant Biology, Volume 67, Issue 10, Page 2668-2685, October 2025.
The global Spermatophyte Spatial Evolutionary System defines 18 distribution types and six supertypes across three floristic elements, primarily formed between the Eocene and Miocene and shaped by climate, long‐distance dispersal, and tectonic movement, revealing that similar distribution patterns of spermatophytes were driven by comparable formation ...
Xian‐Han Huang, Tao Deng, Jun‐Tong Chen, Quan‐Sheng Fu, Xin‐Jian Zhang, Nan Lin, Peng‐Rui Luo, Qun Liu, Xin‐Yuan Kuai, Jing‐Yi Peng, Jacob‐B. Landis, Yan‐Tao Wei, Heng‐Chang Wang, Hang Sun   +13 more
wiley   +1 more source

In silico analysis of the evolution of root phenotypes during maize domestication in Neolithic soils of Tehuacán

New Phytologist, Volume 248, Issue 1, Page 339-353, October 2025.
Summary Roots are essential for plant adaptation to changing environments, yet the role of roots in crop domestication remains unclear. This study examined the evolution of root phenotypes from teosinte to maize, a transition resulting in reduced nodal root number (NRN), multiseriate cortical sclerenchyma (MCS), and increased seminal root number (SRN).
Ivan Lopez‐Valdivia, Miguel Vallebueno‐Estrada, Harini Rangarajan, Kelly Swarts, Bruce F. Benz, Michael Blake, Jagdeep Singh Sidhu, Sergio Perez‐Limon, Ruairidh J. H. Sawers, Hannah Schneider, Jonathan P. Lynch   +10 more
wiley   +1 more source

The modern pollen-vegetation relationship of a tropical forest-savannah mosaic landscape, Ghana, West Africa [PDF]

, 2017
Transitions between forest and savannah vegetation types in fossil pollen records are often poorly understood due to over-production by taxa such as Poaceae and a lack of modern pollen-vegetation studies.
Adele C.M. Julier, Akwasi Duah-Gyamfi, Angela L. Coe, Barry H. Lomax, Bengo MD, Danquah E, Dupont LM, Gorel AP, Hawthorne W, Ibie BF, Jones CE, Juggins S., Julier A, Kennedy Owusu-Afriyie, Lewis SL, Marthews TR, Phillip E. Jardine, R Core Team, Riollet G, Sam Moore, Stephen Adu-Bredu, Stockmarr J., Valencia B., van Campo M., Wesley T. Fraser, White F, Wildlife Department, Accra, William D. Gosling, Yadvinder Malhi, Ybert J-P.   +29 more
core   +6 more sources

Multi‐Stage Crustal Thickening, Surface Uplift, and Collision in the Western Himalaya‐Karakoram‐Tibet Orogen Revealed by Chemical Mohometry

Geochemistry, Geophysics, Geosystems, Volume 26, Issue 9, September 2025.
Abstract The Himalaya‐Karakoram‐Tibet (HKT) orogen provides an unrivaled opportunity to study the dynamic linkages between deep and surface processes during collisional orogenesis. However, these efforts are hindered by conflicting interpretations on the number and timing of collisional events, and the timing of crustal thickening and associated ...
Ian W. Hillenbrand, Victor E. Guevara
wiley   +1 more source

Early Cretaceous flora from the Pranhita-Godavari Basin (east coast of India): taxonomic, taphonomic and palaeoecological considerations

Acta Palaeobotanica, 2017
The Early Cretaceous flora from the Gangapur Formation (Pranhita-Godavari Basin, east coast of India) was studied. Its plant diversity and abundance patterns were examined, and its palaeoecology and environment were interpreted, based on the micro- and ...
CHOPPARAPU CHINNAPPA, ANNAMRAJU RAJANIKANTH   +1 more
doaj   +1 more source

Palaeoecological and possible evolutionary effects of early Namurian (Serpukhovian, Carboniferous) glacioeustatic cyclicity [PDF]

, 2008
Early Namurian (Serpukhovian, Carboniferous), sedimentary cycles in the Throckley and Rowlands Gill boreholes, near Newcastle upon Tyne, UK, consist of fossiliferous limestones overlain by (usually unfossiliferous) black mudstone, followed by sandstones ...
Leng, Melanie, Millward, David, Stephenson, Michael, Vane, Christopher   +3 more
core   +1 more source

Millennia of Metacommunity Diversification and Homogenization Captured by Sedimentary Ancient DNA

Ecology Letters, Volume 28, Issue 9, September 2025.
The study examines 13,000 years of plant metacommunity change using sedimentary ancient DNA and multiple diversity metrics (α, 𝛽, 𝛾, 𝛇). It finds increasing taxon richness and local coexistence, with long‐term diversification and transient homogenisation.
Dilli P. Rijal, Kari Anne Bråthen, Antony G. Brown, Peter D. Heintzman, Inger G. Alsos, Nigel G. Yoccoz   +5 more
wiley   +1 more source

Fossil remains of the genus Crataegus (Rosaceae, Amygdaloideae) from south-eastern Armenia

Acta Palaeobotanica
As a result of the research, we determined the sectional affiliation of fossil remains of the genus Crataegus from the Early Pleistocene of the south-eastern part of Armenia, in the middle reaches of the Vorotan River.
Ivan Gabrielyan, Merine Sargsyan, Arpine Achoyan   +2 more
doaj   +1 more source

Occurrence of Shorea Roxburgh ex C. F. Gaertner (Dipterocarpaceae) in the Neogene Siwalik forests of eastern Himalaya and its biogeography during the Cenozoic of Southeast Asia [PDF]

, 2016
We report the occurrence of two leaf impressions and one leaf compression along with one winged fruit and two fruiting calyx lobes, resembling those of Shorea Roxburgh ex C. F.
Bera, Subir, Khan, Mahasin Ali, Spicer, Robert A., Spicer, Teresa E.V.   +3 more
core   +1 more source