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Mostrando ítems 11-15 de 15
Biogeochemical Processes Controlling Oxygen and Carbon Isotopes of Diatom Silica in Late Glacial to Holocene Lacustrine Rhythmites
(Elsevier, 2010-05-19)
[Abstract] Biogeochemical cycles and sedimentary records in lakes are related to climate controls on hydrology and catchment processes. Changes in the isotopic composition of the diatom frustules (δ18Odiatom and δ13Cdiatom) ...
ENSO and Solar Activity Signals From Oxygen Isotopes in Diatom Silica During Late Glacial-Holocene Transition in Central Andes (18°S)
(Springer, 2010-02)
[Abstract] The late glacial-Holocene transition from the Lago Chungará sedimentary record in northern Chilean Altiplano (18°S) is made up of laminated sediments composed of light-white and dark-green pluriannual couplets ...
The Vanishing and the Establishment of a New Ecosystem on an Oceanic Island: Anthropogenic Impacts With No Return Ticket
(Elsevier, 2022-03-31)
[Abstract] A multiproxy approach was applied to a sediment core retrieved from the deep crater Lake Funda, located in the middle of the North Atlantic Ocean on Flores Island, Azores archipelago (Portugal). The purpose of ...
Climate Change Facilitated the Early Colonization of the Azores Archipelago During Medieval Times
(National Academy of Sciences of the United States of America, 2021-08-27)
[Abstract] Humans have made such dramatic and permanent changes to Earth's landscapes that much of it is now substantially and irreversibly altered from its preanthropogenic state. Remote islands, until recently isolated ...
Long-Term Hydroclimate Variability in the Sub-Tropical North Atlantic and Anthropogenic Impacts on Lake Ecosystems: A Case Study From Flores Island, the Azores
(Elsevier, 2022-06-01)
[Abstract] Human land use and climate change threaten ecosystems and natural resources, particularly on remote islands such as the Azores Archipelago in the North Atlantic. Since the official Portuguese settlement of the ...