Publication Date:
2024-01-27
Description:
The Azores archipelago is a group of nine oceanic volcanic islands located in the mid-North Atlantic, roughly 1500 km from Europe and 1900 km from America. Lake Funda is situated in the southern sector of the central plateau of Flores Island at 351 m altitude and occupies the bottom of a small maar-explosion crater with 875 m in length and 625 m width, with a total area of 0.37 km2 where several water lines converge. A coring campaign was conducted in June 2017 using a 60mm diameter UWITEC gravity corer from UWITEC floating platform retrieving a core (9.97 m long) located in the deepest part of the lake. The core was dated using ¹⁴C and produced a multi-proxy dataset of geochemical and biological analyses that we used to uncover paleoenvironmental changes on Lake Azul in the last 1300 years.,
Keywords:
Accumulation rate, 5alpha-stigmastan-3beta-ol; Accumulation rate, 5beta-cholestan-3beta-ol; Accumulation rate, coprophilous fungi spores; Accumulation rate, macrophytes seeds; Aerophilous diatoms; Age; AGE; AMS 14C dating on pollen concentrates; Clam routine on R; Arboreal pollen; Azores Archipelago; Carbon, organic, total; Carbon, organic, total/Nitrogen, total ratio; Carbon dioxide, partial pressure, blood, standard error; Charcoal, flux; Charcoal analysis (Whitlock & Larsen, 2001, in Birks & Last, Tracking Environmental Change Using Lake Sediments); Chironomid analysis (Brooks et al, 2007, The identification and use of Palaeartic Chironomid Larvae in Palaecology); Chironomini; Chromatography; Coccoliths, standard deviation; deep lake; Diatom analysis (Battarbee, 1986, in Berglund, Handbook of Holocene Pal.); Diatoms, benthic; Diatoms, planktic; Funda_2017; GCUWI; Gravity corer, UWITEC; Lake Funda, Flores Island, Azores; Mass spectrometer Finnigan Finnigan delta Plus EA-CF-IRMS; multiproxy; Nitrogen, total; oceanic island; Orthocladiinae; Pollen, herbs; Pollen, shrubs; Pollen analysis (Bennett & Willis, 2001, in Birks & Last, Tracking Environmental Change Using Lake Sediments); Tanypodinae; Tanytarsini; δ13C; δ15N
Type:
Dataset
Format:
text/tab-separated-values, 1202 data points
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