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Raposeiro, Pedro Miguel; Hernández, Armand; Pla-Rabes, Sergi; Bao, Roberto; Sáez, Alberto; Benavente, Mario; Richter, Nora; de Groff, Wylie; de Boer, Erik J; Ritter, Catarina; Amaral-Zettler, Linda A; Giralt, Santiago (2021): Multi-proxy analysis of sediment cores from Lake Funda (Azores archipelago, Portugal). PANGAEA, https://doi.org/10.1594/PANGAEA.933712

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Abstract:
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.,
Keyword(s):
Azores Archipelago; deep lake; multiproxy; oceanic island
Funding:
Fundação para a Ciência e Tecnologia (FCT), grant/award no. PTDC/CTA-AMB/28511/2017: WHEN WERE THE AZORES ARCHIPELAGO REALLY COLONIZED? A HIGH-RESOLUTION PALEOLIMNOLOGICAL APPROACH
Coverage:
Latitude: 39.406417 * Longitude: -31.217556
Date/Time Start: 2017-06-14T00:00:00 * Date/Time End: 2017-06-14T00:00:00
Minimum Elevation: 351.0 m * Maximum Elevation: 351.0 m
Event(s):
Funda_2017 * Latitude: 39.406417 * Longitude: -31.217556 * Date/Time: 2017-06-14T00:00:00 * Elevation: 351.0 m * Recovery: 9.94 m * Location: Lake Funda, Flores Island, Azores * Method/Device: Gravity corer, UWITEC (GCUWI)
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1AGEAgeka BPGeocode
2AgeAgea ADGiralt, SantiagoAMS 14C dating on pollen concentrates; Clam routine on R
3Aerophilous diatomsAeroph diatom%Gonçalves, VítorDiatom analysis (Battarbee, 1986, in Berglund, Handbook of Holocene Pal.)
4Diatoms, benthicDiatom benthic%Gonçalves, VítorDiatom analysis (Battarbee, 1986, in Berglund, Handbook of Holocene Pal.)
5Carbon dioxide, partial pressure, blood, standard errorpCO2 blood std e±Gonçalves, VítorDiatom analysis (Battarbee, 1986, in Berglund, Handbook of Holocene Pal.)
6Diatoms, plankticDiatom plank%Gonçalves, VítorDiatom analysis (Battarbee, 1986, in Berglund, Handbook of Holocene Pal.)
7ChironominiChironomini%Raposeiro, Pedro MiguelChironomid analysis (Brooks et al, 2007, The identification and use of Palaeartic Chironomid Larvae in Palaecology)Chironomidae Chironomini
8OrthocladiinaeOrthocladiinae%Raposeiro, Pedro MiguelChironomid analysis (Brooks et al, 2007, The identification and use of Palaeartic Chironomid Larvae in Palaecology)Chironomidae Orthocladiinae
9TanytarsiniTanytarsini%Raposeiro, Pedro MiguelChironomid analysis (Brooks et al, 2007, The identification and use of Palaeartic Chironomid Larvae in Palaecology)Chironomidae Tanytarsini
10TanypodinaeTanypodinae%Raposeiro, Pedro MiguelChironomid analysis (Brooks et al, 2007, The identification and use of Palaeartic Chironomid Larvae in Palaecology)Chironomidae Tanypodinae [%]
11Coccoliths, standard deviationCocco std dev±Raposeiro, Pedro MiguelCharcoal analysis (Whitlock & Larsen, 2001, in Birks & Last, Tracking Environmental Change Using Lake Sediments)
12Charcoal fluxCharcoal flux#/cm2/ade Boer, Erik JPollen analysis (Bennett & Willis, 2001, in Birks & Last, Tracking Environmental Change Using Lake Sediments)
13Accumulation rate, coprophilous fungi sporesAcc rate coproph fung sp flux#/cm2/ade Boer, Erik JPollen analysis (Bennett & Willis, 2001, in Birks & Last, Tracking Environmental Change Using Lake Sediments)
14Arboreal pollenAP%de Boer, Erik JPollen analysis (Bennett & Willis, 2001, in Birks & Last, Tracking Environmental Change Using Lake Sediments)
15Pollen, shrubsPollen shrubs%de Boer, Erik JPollen analysis (Bennett & Willis, 2001, in Birks & Last, Tracking Environmental Change Using Lake Sediments)
16Pollen, herbsPollen herbs%de Boer, Erik JPollen analysis (Bennett & Willis, 2001, in Birks & Last, Tracking Environmental Change Using Lake Sediments)
17Accumulation rate, macrophytes seedsAcc rate macrophy seeds#/cm2/ade Boer, Erik JPollen analysis (Bennett & Willis, 2001, in Birks & Last, Tracking Environmental Change Using Lake Sediments)
18Carbon, organic, total/Nitrogen, total ratioTOC/TNBao, Roberto
19Carbon, organic, totalTOC%Bao, RobertoMass spectrometer Finnigan Finnigan delta Plus EA-CF-IRMS
20δ13Cδ13C‰ PDBBao, RobertoMass spectrometer Finnigan Finnigan delta Plus EA-CF-IRMS
21Nitrogen, totalTN%Bao, RobertoMass spectrometer Finnigan Finnigan delta Plus EA-CF-IRMS
22δ15Nδ15N‰ airBao, RobertoMass spectrometer Finnigan Finnigan delta Plus EA-CF-IRMS
23Accumulation rate, 5β-cholestan-3β-olAcc rate coprostanolng/cm2/aRichter, NoraChromatographyCoprostanol influx
24Accumulation rate, 5α-stigmastan-3β-olAcc rate stigmastanolng/cm2/aRichter, NoraChromatography5B-Stigmastanol influx
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
1202 data points

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