Results 61 to 70 of about 17,704 (249)

A revised stratigraphy for the Palaeocene Agatdalen flora (Nuussuaq Peninsula, western Greenland): correlating fossiliferous outcrops, macrofossils, and palynological samples from phosphoritic nodules

, 2016
The Cretaceous and Palaeogene floras of western Greenland that were initially described as part of the classical work “Flora fossilis arctica” by Oswald Heer in the 19th century are currently under revision.
F. Grímsson, G. Pedersen, G. Grimm, R. Zetter   +3 more
semanticscholar   +1 more source

Late Holocene moisture variability in Arctic Alaska from chitin δ18O

Boreas, EarlyView.
Amplified warming in the Arctic has resulted in reduced sea‐ice extent, which can impact regional climate dynamics. Elucidating past moisture variability in response to changing temperatures and sea‐ice conditions can offer insight into how anthropogenic climate change may impact Arctic areas such as the Alaskan North Slope in the future. We contribute
Briana A. Edgerton, Melissa L. Chipman
wiley   +1 more source

Droughts and human impact in the ancient Uaymil region of the Maya lowlands inferred from a 2800‐year sedimentary archive at Lake Kaná, Mexico

Boreas, EarlyView.
The relationship between the climate and societal transformation in Maya lowlands has long been debated, particularly the role of drought in shaping the civilization trajectory during the Classic Period. A high‐resolution, multi‐proxy, geochemical record from Lake Kaná, located in the underexplored Uaymil region of the Yucatán Peninsula in Mexico ...
Haydar B. Martinez‐Dyrzo, Priyadarsi D. Roy, Benjamin Gwinneth, Irma G. Vargas‐Martinez, Alejandro A. Aragon‐Moreno, Roger Medina‐Gonzales   +5 more
wiley   +1 more source

Insight into the vegetation development of the Karkonosze Mountains (southwestern Poland) during the Late Vistulian and Holocene, based on data from glacial lakes

Acta Palaeobotanica
New palaeoecological records from two glacial lakes (the Mały Staw – 1183 m a.s.l. and the Wielki Staw – 1225 m a.s.l.) from the Polish Western Sudetes were obtained with the aim of better understanding the long-term vegetation development, the ...
Agnieszka Wacnik, Ewa Madeyska
doaj   +1 more source

Food sources for the Ediacara biota communities

Nature Communications, 2020
Complex macroscopic organisms are first found in the Ediacaran period, but their ecology during this time is not well understood. Here, Bobrovskiy et al.
Ilya Bobrovskiy, Janet M. Hope, Elena Golubkova, Jochen J. Brocks   +3 more
doaj   +1 more source

Characterisation of Holocene plant macrofossils from North Spanish ombrotrophic mires: bryophytes [PDF]

Mires and Peat, 2017
The methods and criteria used for the identification of bryophytes from the peat deposits of four ombrotrophic mires in northern Spain are presented. Two liverworts and fifteen moss taxa were recorded.
M. Souto, D. Castro, X. Pontevedra-Pombal, E. Garcia-Rodeja, M.I. Fraga   +4 more
doaj   +1 more source

Monocotyledon fossil leaf from the Early Cretaceous of India

Acta Botânica Brasílica, 2022
Reports of the angiosperm macrofossils from the Early Cretaceous sediments of India are relatively poor, with only one report from the Krishna-Godavari Basin.
Chinnappa Chopparapu, Annamraju Rajanikanth, Pauline Sabina Kavali, Sarah Gonçalves Duarte   +3 more
doaj   +1 more source

Restoring the lost Ericaceae of Botany Bay's scrublands through a paleoecological approach in southeastern Sydney, Australia

Restoration Ecology, EarlyView.
Abstract Introduction With anthropogenic environmental change accelerating, incorporating long‐term perspectives into ecological restoration is essential. Paleoecological evidence increasingly indicates that many perceived “natural” landscapes under current conservation regimes are, in fact, cultural or modern systems.
Yihan Wang, Emily F. Strautins, Guy Lowe, Shane Ingrey, Dan Penny, Josephine Gillespie, Hannah McPherson, Rebecca Hamilton   +7 more
wiley   +1 more source

Evidence for elevated emissions from high-latitude wetlands contributing to high atmospheric CH4 concentration in the early Holocene [PDF]

, 2013
The major increase in atmospheric methane (CH4) concentration during the last glacial-interglacial transition provides a useful example for understanding the interactions and feedbacks among Earth\u27s climate, biosphere carbon cycling, and atmospheric ...
Bubier, Jill L., Cai, Shanshan, Frolking, Steve, Loisel, Julie, MacDonald, Glenn M, Turetsky, Merritt R, Yu, Zicheng, Zhao, Yan   +7 more
core   +2 more sources

Filling the “data gap”: Using paleoecology to investigate the decline of Najas flexilis (a rare aquatic plant)

Geo: Geography and Environment, 2019
In the absence of long‐term monitoring records, paleoecology can be used to extend knowledge of species and community ecology into the past. The rare and declining aquatic plant Najas flexilis is a priority species for conservation across Europe, and is ...
Isabel J. Bishop, Helen Bennion, Carl D. Sayer, Ian R. Patmore, Handong Yang   +4 more
doaj   +1 more source