Results 61 to 70 of about 25,630 (224)

Spatially Aware Dictionary Learning and Coding for Fossil Pollen Identification

open access: yes, 2016
We propose a robust approach for performing automatic species-level recognition of fossil pollen grains in microscopy images that exploits both global shape and local texture characteristics in a patch-based matching methodology.
Fowlkes, Charless   +2 more
core   +1 more source

Impact of earthquakes on agriculture during the Roman–Byzantine period from pollen records of the Dead Sea laminated sediment [PDF]

open access: yes, 2010
The Dead Sea region holds the archives of a complex relationship between an ever-changing nature and ancient civilisations. Regional pollen diagrams show a Roman–Byzantine period standing out in the recent millennia by its wetter climate that allowed ...
Amiran   +24 more
core   +1 more source

Palaeoenvironmental evolution of the Baltic Sea basin during the Last Interglacial (Eemian, Mikulino stages): a review

open access: yesBoreas, EarlyView.
This review presents an investigation of the evolution of the Baltic Sea basin and its connections through the Eemian Stage, based upon sequences of marine and associated deposits from the White Sea to the Southwest Baltic, via the Karelian channel. Pollen analyses, foraminiferal and ostracod analyses provide the evolution of relative sea‐level change,
Philip L. Gibbard, Karen L. Knudsen
wiley   +1 more source

Preliminary study of the airborne pollen in the atmosphere of Puerto Ayora (Galapagos Islands, Ecuador) [PDF]

open access: yes, 2017
Galapagos is an archipelago of volcanic islands located 972 km west from the continental Ecuador. They were declared by the UNESCO as a World Heritage Site and Biosphere Reserve due to their singular environmental value, where a third part of the ...
Jaramillo Díaz, Patricia   +3 more
core  

Palynostratigraphy and palynofacies of the early Eocene Gurha lignite mine, Rajasthan, India [PDF]

open access: yes, 2016
A 105 m early Eocene section exposed in the Gurha mine in the Nagaur-Ganganagar Basin, Rajasthan, India, archiving remains of equatorial vegetation at a time of extreme global warmth and close to the onset of the India-Eurasia collision, is investigated ...
Aggarwal   +50 more
core   +1 more source

Chironomid‐based summer temperature reconstruction of the Eemian–Weichselian transition at Lichtenberg, northern Germany

open access: yesBoreas, EarlyView.
Understanding the temperature variability of past interglacial cycles is essential to predict future climates. We present a new summer temperature reconstruction, based on the subfossil chironomid record from a small palaeolake adjacent to the Middle Palaeolithic site of Lichtenberg, northern Germany. The record spans from the Saalian late glacial over
Sonja Rigterink   +10 more
wiley   +1 more source

Palynology for Sustainability: A Classical and Versatile Tool for New Challenges—Recent Progress

open access: yesQuaternary
Palynology deals with several topics closely linked to sustainability [...]
Anna Maria Mercuri   +3 more
doaj   +1 more source

Polish Palaeobotany: 750 Million Years of Plant History as Revealed in a Century of Studies. Mesozoic Terrestrial Palynology and Flora Reconstruction

open access: yesActa Societatis Botanicorum Poloniae, 2022
Palynological studies of the Mesozoic era in Poland began in the 1950s. These investigations developed in many directions, including stratigraphy, systematics of spores and pollen grains and their botanical affinities, as well as paleoecological and ...
Jadwiga Ziaja, Anna Fijałkowska-Mader
doaj   +1 more source

1163. Heterotheca camporum (Greene) Shinners

open access: yesCurtis's Botanical Magazine, EarlyView.
Summary Heterotheca camporum (Greene) Shinners (Compositae: Astereae: Chrysopsidinae) is described and illustrated. Notes are provided for the species' cultivation, propagation, likely pests and diseases, and availability. A full synonymy is given, along with type citations and known presence of type material, together with relevant notes.
Nicholas Hind, Christabel King
wiley   +1 more source

High-resolution ecosystem changes pacing the millennial climate variability at the Middle to Upper Palaeolithic transition in NE-Italy

open access: yesScientific Reports, 2023
Observation of high-resolution terrestrial palaeoecological series can decipher relationships between past climatic transitions, their effects on ecosystems and wildfire cyclicity. Here we present a new radiocarbon dated record from Lake Fimon (NE-Italy)
Federica Badino   +9 more
doaj   +1 more source

Home - About - Disclaimer - Privacy