Results 31 to 40 of about 10,475 (220)
China's Beech Forests in the Pre-Quaternary [PDF]
Fossil Record, 1998 Fagus in China is never dominant in Late Cretaceous and Tertiary floras although it might reach its highest diversity in the Miocene. The genus Fagus was more widely distributed during the Palaeogene than in the Neogene.
L. Yu-Sheng, W. Wei-Ming, A. Momohara
doaj +3 more sources
Southern Ocean warming and Wilkes Land ice sheet retreat during the mid-Miocene
Nature Communications, 2018 Ocean heat is important in forcing ice sheet retreat, yet past ocean temperature data from proximal ice sheet locations are sparse. Here, the authors present temperature reconstructions from the Wilkes Land subglacial basin during the mid-Miocene, and ...
Francesca Sangiorgi +13 more
doaj +1 more source
Frontiers in Ecology and Evolution, 2023 Riparian wetland ecosystems provide important ecological services but are also vulnerable to climate change and human activities. To understand the influence of natural factors (e.g.
Chung Hoai Nguyen +5 more
doaj +1 more source
Collectanea Botanica, 2011 Análisis palinológico preliminar de una turbera holocena del Apakará-tepui (Macizo de Chimantá, Guayana venezolana).- Este artículo presenta los resultados palinológicos preliminares, a escala de milenios, de una secuencia holocena, desde 8.0 cal kyr BP ...
V. Rull, E. Montoya, S. Nogué, O. Huber
doaj +1 more source
Microscopy Research and Technique, EarlyView.This study provides the palynological analysis of 12 Crucianella L. taxa using LM and SEM. Variations in pollen size, aperture number, and exine ornamentation were identified as key traits, demonstrating their taxonomic value for distinguishing closely related species and subspecies within the genus. ABSTRACT Crucianella L.
Sevcan Celenk +3 more
wiley +1 more source
Conifer diversity in the Kungurian of Europe—Evidence from dwarf-shoot morphology [PDF]
, 2017 A major global change, the transition from an icehouse to a greenhouse world, took place during the Permian. In the equatorial Euramerican floral realm this resulted in stepwise changes from sub-humid climates in the early Cisuralian to semi-arid/arid ...
Looy, Cindy V. +7 more
core +2 more sources
Dendrochronologically dated pine stumps document phase-wise bog expansion at a northwest German site between ca. 6700 and ca. 3400 BC [PDF]
Climate of the Past, 2018 The investigated northwest German mire site at Totes Moor is densely covered with subfossil pine stumps (Pinus sylvestris L.) from the fen–bog transition.
I. E. M. Achterberg +4 more
doaj +1 more source
Journal of Quaternary Science, EarlyView.ABSTRACT This study presents a high‐resolution, multi‐proxy reconstruction of environmental and land‐use change from Lake Dojran over historical times (last 2500 years), combining pollen, biomarkers, radiocarbon dating, Ottoman taxation records and other historical data.
Alessia Masi +15 more
wiley +1 more source
Journal of Quaternary Science, EarlyView.ABSTRACT Upland farming in Europe is frequently assumed to have been limited and precarious, despite relict spade‐dug ridges providing firm evidence of past crop growing. Direct evidence for crop types in post‑Medieval to Modern (~since 1500 CE) uplands is rare; yet, in Ireland, relict spade‐dug ridges that date to this period are commonly interpreted ...
Helen Essell, Gill Plunkett
wiley +1 more source
Feature Extraction and Machine Learning for the Classification of Brazilian Savannah Pollen Grains.
PLoS ONE, 2016 The classification of pollen species and types is an important task in many areas like forensic palynology, archaeological palynology and melissopalynology.
Ariadne Barbosa Gonçalves +6 more
doaj +1 more source