Raposeiro, Pedro Miguel; Hernández, Armand; Gonçalves, Vítor; Bao, Roberto; Sáez, Alberto; Shanahan, Timothy M; Rúbio, Maria Jesus; Vázquez-Loureiro, David; Giralt, Santiago (2021): Multi-proxy analysis of sediment cores from Lake Azul (Azores archipelago, Portugal) [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.933710
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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 Azul located in São Miguel island has a surface area of 4.35 km, 28m of maximum depth and is located at 259m above sea level. A coring campaign was conducted in September 2011 using a 60mm diameter UWITEC gravity corer from UWITEC floating platform retrieving a Core AZ11_02 (1.70 m long) located in the deep basin of the lake (27m depth). 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 660 years.
Related to:
Raposeiro, Pedro Miguel; Rúbio, Maria Jesus; González, Alba; Hernández, Armand; Sánchez-López, Guiomar; Vázquez-Loureiro, David; Rull, V; Bao, Roberto; Costa, Ana Cristina; Gonçalves, Vítor; Sáez, Alberto; Giralt, Santiago (2017): Impact of the historical introduction of exotic fishes on the chironomid community of Lake Azul (Azores Islands). Palaeogeography, Palaeoclimatology, Palaeoecology, 466, 77-88, https://doi.org/10.1016/j.palaeo.2016.11.015
Vázquez-Loureiro, David; Gonçalves, Vítor; Sáez, Alberto; Hernández, Armand; Raposeiro, Pedro Miguel; Giralt, Santiago; Rubio-Inglés, María J; Rull, V; Bao, Roberto (2019): Diatom-inferred ecological responses of an oceanic lake system to volcanism and anthropogenic perturbations since 1290 CE. Palaeogeography, Palaeoclimatology, Palaeoecology, 534, 109285, https://doi.org/10.1016/j.palaeo.2019.109285
Project(s):
Funding:
Federal Ministry of Food and Agriculture (BMEL), grant/award no. 2813HS009: Development of a CCAMLR Marine Protected Area in the Antarctic Weddell Sea
Coverage:
Latitude: 37.872222 * Longitude: -25.773889
Date/Time Start: 2011-09-11T00:00:00 * Date/Time End: 2011-09-11T00:00:00
Minimum Elevation: 270.0 m * Maximum Elevation: 270.0 m
Event(s):
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | AGE | Age | ka BP | Geocode | ||
| 2 | Age | Age | a AD/CE | Giralt, Santiago | ||
| 3 | Aerophilous diatoms | Aeroph diatom | % | Bao, Roberto | Diatom analysis (Battarbee, 1986, in Berglund, Handbook of Holocene Pal.) | |
| 4 | Diatoms, benthic | Diatom benthic | % | Bao, Roberto | Diatom analysis (Battarbee, 1986, in Berglund, Handbook of Holocene Pal.) | |
| 5 | Carbon dioxide, partial pressure, blood, standard error | pCO2 blood std e | ± | Bao, Roberto | Diatom analysis (Battarbee, 1986, in Berglund, Handbook of Holocene Pal.) | |
| 6 | Diatoms, planktic | Diatom plank | % | Bao, Roberto | Diatom analysis (Battarbee, 1986, in Berglund, Handbook of Holocene Pal.) | |
| 7 | Chironomini | Chironomini | % | Raposeiro, Pedro Miguel | Chironomid analysis (Brooks et al, 2007, The identification and use of Palaeartic Chironomid Larvae in Palaecology) | Chironomidae Chironomini |
| 8 | Orthocladiinae | Orthocladiinae | % | Raposeiro, Pedro Miguel | Chironomid analysis (Brooks et al, 2007, The identification and use of Palaeartic Chironomid Larvae in Palaecology) | Chironomidae Orthocladiinae |
| 9 | Tanytarsini | Tanytarsini | % | Raposeiro, Pedro Miguel | Chironomid analysis (Brooks et al, 2007, The identification and use of Palaeartic Chironomid Larvae in Palaecology) | Chironomidae Tanytarsini |
| 10 | Tanypodinae | Tanypodinae | % | Raposeiro, Pedro Miguel | Chironomid analysis (Brooks et al, 2007, The identification and use of Palaeartic Chironomid Larvae in Palaecology) | |
| 11 | Carbon, organic, total/Nitrogen, total ratio | TOC/TN | Giralt, Santiago | |||
| 12 | Carbon, organic, total | TOC | % | Giralt, Santiago | Mass spectrometer Finnigan Finnigan delta Plus EA-CF-IRMS | |
| 13 | δ13C | δ13C | ‰ PDB | Giralt, Santiago | Mass spectrometer Finnigan Finnigan delta Plus EA-CF-IRMS | |
| 14 | Nitrogen, total | TN | % | Giralt, Santiago | Mass spectrometer Finnigan Finnigan delta Plus EA-CF-IRMS | |
| 15 | δ15N | δ15N | ‰ air | Giralt, Santiago | Mass spectrometer Finnigan Finnigan delta Plus EA-CF-IRMS | |
| 16 | Accumulation rate, 5beta-cholestan-3beta-ol | Acc rate coprostanol | ng/cm2/a | Shanahan, Timothy M | Gas chromatography - Mass spectrometry (GC-MS) | Coprostanol flux |
| 17 | Accumulation rate, 5alpha-stigmastan-3beta-ol | Acc rate stigmastanol | ng/cm2/a | Shanahan, Timothy M | Gas chromatography - Mass spectrometry (GC-MS) | Stigmastanol flux |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
1471 data points