Raposeiro, Pedro Miguel; Ritter, Catarina; Salcedo, Marina; Aguiar, Nicole; de Boer, Erik J; Bao, Roberto; Sáez, Alberto; Giralt, Santiago; Gonçalves, Vítor (2021): Multi-proxy analysis of sediment cores from Lake Ginjal (Azores archipelago, Portugal) [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.933674
Always quote citation above when using data! You can download the citation in several formats below.
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. In 2018, a sediment core was recovered from Lake Ginjal on Terceira island. A 3.5 m long sediment core was taken using a Russian chamber corer, 0.5 m long, with 5 cm diameter. Lake Ginjal occupies the bottom of a small crater at 390 m above sea level located in the plains of Achada, the oldest volcanic crater of Terceira island. Its maximum length and width are 120 m and 70 m, respectively, and its maximum water depth is 1 m. 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 550 years.
Related to:
Raposeiro, Pedro Miguel; Hernández, Armand; Pla-Rabes, Sergi; Gonçalves, Vítor; Bao, Roberto; Sáez, Alberto; Shanahan, Timothy M; Benavente, Mario; de Boer, Erik J; Richter, Nora; Gordon, Verónica; Marques, Helena; Sousa, Pedro M; Souto, Martin; Matias, Miguel G; Aguiar, Nicole; Pereira, Cátia; Ritter, Catarina; Rúbio, Maria Jesus; Salcedo, Marina; Vázquez-Loureiro, David; Margalef, Olga; Amaral-Zettler, Linda A; Costa, Ana Cristina; Huang, Yongsong; van Leeuwen, Jacqueline F N; Masqué, Pere; Prego, Ricardo; Ruiz-Fernández, Ana Carolina; Sanchez-Cabeza, Joan-Albert; Trigo, Ricardo M; Giralt, Santiago (2021): Climate change facilitated the early colonization of the Azores Archipelago during medieval times. Proceedings of the National Academy of Sciences, 118(41), e2108236118, https://doi.org/10.1073/pnas.2108236118
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: 38.695278 * Longitude: -27.158056
Date/Time Start: 2018-08-05T00:00:00 * Date/Time End: 2018-08-05T00:00:00
Minimum Elevation: 390.0 m * Maximum Elevation: 390.0 m
Event(s):
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | AGE | Age | ka BP | Raposeiro, Pedro Miguel | Geocode | |
| 2 | Age | Age | a AD/CE | Giralt, Santiago | AMS 14C dating on pollen concentrates; Clam routine on R | |
| 3 | Aerophilous diatoms | Aeroph diatom | % | Gonçalves, Vítor | Diatom analysis (Battarbee, 1986, in Berglund, Handbook of Holocene Pal.) | |
| 4 | Diatoms, benthic | Diatom benthic | % | Gonçalves, Vítor | Diatom analysis (Battarbee, 1986, in Berglund, Handbook of Holocene Pal.) | |
| 5 | Carbon dioxide, partial pressure, blood, standard error | pCO2 blood std e | ± | Gonçalves, Vítor | Diatom analysis (Battarbee, 1986, in Berglund, Handbook of Holocene Pal.) | |
| 6 | Diatoms, planktic | Diatom plank | % | Gonçalves, Vítor | 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 | Coccoliths, standard deviation | Cocco std dev | ± | Raposeiro, Pedro Miguel | Chironomid analysis (Brooks et al, 2007, The identification and use of Palaeartic Chironomid Larvae in Palaecology) | |
| 11 | Charcoal, flux | Charcoal flux | #/cm2/a | Raposeiro, Pedro Miguel | Charcoal analysis (Whitlock & Larsen, 2001, in Birks & Last, Tracking Environmental Change Using Lake Sediments) | |
| 12 | Accumulation rate, coprophilous fungi spores | Acc rate coproph fung sp flux | #/cm2/a | de Boer, Erik J | Pollen analysis (Bennett & Willis, 2001, in Birks & Last, Tracking Environmental Change Using Lake Sediments) | |
| 13 | Arboreal pollen | AP | % | de Boer, Erik J | Pollen analysis (Bennett & Willis, 2001, in Birks & Last, Tracking Environmental Change Using Lake Sediments) | |
| 14 | Pollen, shrubs | Pollen shrubs | % | de Boer, Erik J | Pollen analysis (Bennett & Willis, 2001, in Birks & Last, Tracking Environmental Change Using Lake Sediments) | |
| 15 | Pollen, herbs | Pollen herbs | % | de Boer, Erik J | Pollen analysis (Bennett & Willis, 2001, in Birks & Last, Tracking Environmental Change Using Lake Sediments) | |
| 16 | Carbon, organic, total/Nitrogen, total ratio | TOC/TN | Bao, Roberto | |||
| 17 | Carbon, organic, total | TOC | % | Bao, Roberto | ||
| 18 | δ13C | δ13C | ‰ PDB | Bao, Roberto | Mass spectrometer Finnigan Finnigan delta Plus EA-CF-IRMS | |
| 19 | Nitrogen, total | TN | % | Bao, Roberto | Mass spectrometer Finnigan Finnigan delta Plus EA-CF-IRMS | |
| 20 | δ15N | δ15N | ‰ air | Bao, Roberto | Mass spectrometer Finnigan Finnigan delta Plus EA-CF-IRMS |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
1058 data points