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Abstract: Not Available Category: geoscientificInformation Source: Not Available Supplemental Information: Not Availble Coverage: EVENT LABEL: (Goodwin Creek) * LATITUDE: 34.254700 * LONGITUDE: -89.872900 * DATE/TIME: 1995-01-01T00:00:00 * ELEVATION: 98.0 m * LOCATION: Mississippi, United States of America * CAMPAIGN: WCRP/GEWEX * METHOD/DEVICE: Monitoring station
Data Types:
  • Tabular Data
Abstract: Ocean acidification is expected to negatively impact calcifying organisms, yet we lack understanding of their acclimation potential in the natural environment. Here we measured geochemical proxies (delta 11B and B/Ca) in Porites astreoides corals that have been growing for their entire life under low aragonite saturation (Omega sw: 0.77–1.85). This allowed us to assess the ability of these corals to manipulate the chemical conditions at the site of calcification (Omega cf), and hence their potential to acclimate to changing Omegasw. We show that lifelong exposure to low Omega sw did not enable the corals to acclimate and reach similar Omega cf as corals grown under ambient conditions. The lower Omega cf at the site of calcification can explain a large proportion of the decreasing P. astreoides calcification rates at low Omega sw. The naturally elevated seawater dissolved inorganic carbon concentration at this study site shed light on how different carbonate chemistry parameters affect calcification conditions in corals. Category: geoscientificInformation Source: Not Available Supplemental Information: In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Gattuso et al, 2019) was used to compute a complete and consistent set of carbonate system variables, as described by Nisumaa et al. (2010). In this dataset the original values were archived in addition with the recalculated parameters (see related PI). The date of carbonate chemistry calculation by seacarb is 2020-03-18. Coverage: Not Available
Data Types:
  • Tabular Data
Abstract: As largest and best-exposed paleo-fast-spread oceanic crust on land, the Samail ophiolite in the Sultanate of Oman represents an ideal natural laboratory for investigating processes at fast-spreading mid-ocean ridges. We studied a layered gabbro sequence from the middle of the plutonic crust showing dm-scale modal layering with olivine abundance gradually decreasing from layer base to top (Wadi Somerah, Sumail block). Laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) was performed in order to obtain trace element contents and rare earth elements (REE) in particular. Analyses were performed at the Institut für Geowissenschaften (Christian-Albrechts-Universität zu Kiel, Germany) using a 193 nm ArF excimer laser ablation system (GeoLasPro HD, Coherent) coupled to an Agilent 7900s ICP-MS. Analyses were performed as point measurements with 16 Hz pulse rate, 18 Jcm-2 fluence and a crater diameter of 120 µm on plagioclase, and 10 Hz, 12 Jcm-2 and a crater diameter of 32 µm on clinopyroxene. Differences in core and rim compositions of clinopyroxene reveal significant zonation with higher REE contents in the rim. Crystallization temperatures calculated using the REE-thermometer of Sun and Liang (2017; doi:10.1007/s00410-016-1326-9) vary between 1230 and 1300°C. Category: geoscientificInformation Source: Not Available Supplemental Information: OM10-Sam: layer 6= 0-8 cm, layer 5= 8-57 cm, layer 4= 57-95 cm, layer 3= 95-136 cm, layer 2= 136-205 cm, layer 1= 205-285 cm Coverage: EVENT LABEL: (Wadi Somerah, Sumail block) * LATITUDE: 23.092960 * LONGITUDE: 58.104060 * ELEVATION: 720.0 m * LOCATION: Oman * METHOD/DEVICE: Drilling/coring
Data Types:
  • Tabular Data
Abstract: Not Available Category: geoscientificInformation Source: Not Available Supplemental Information: Not Availble Coverage: EVENT LABEL: * LATITUDE: 55.393500 * LONGITUDE: 80.618600 * Recovery: 1.9 m * METHOD/DEVICE: Livingstone piston corer
Data Types:
  • Tabular Data
Abstract: Not Available Category: geoscientificInformation Source: Not Available Supplemental Information: Not Availble Coverage: EVENT LABEL: (Goodwin Creek) * LATITUDE: 34.254700 * LONGITUDE: -89.872900 * DATE/TIME: 1995-01-01T00:00:00 * ELEVATION: 98.0 m * LOCATION: Mississippi, United States of America * CAMPAIGN: WCRP/GEWEX * METHOD/DEVICE: Monitoring station
Data Types:
  • Tabular Data
Abstract: Not Available Category: geoscientificInformation Source: Not Available Supplemental Information: Not Availble Coverage: EVENT LABEL: (Goodwin Creek) * LATITUDE: 34.254700 * LONGITUDE: -89.872900 * DATE/TIME: 1995-01-01T00:00:00 * ELEVATION: 98.0 m * LOCATION: Mississippi, United States of America * CAMPAIGN: WCRP/GEWEX * METHOD/DEVICE: Monitoring station
Data Types:
  • Tabular Data
Abstract: Not Available Category: geoscientificInformation Source: Not Available Supplemental Information: Not Availble Coverage: EVENT LABEL: (Goodwin Creek) * LATITUDE: 34.254700 * LONGITUDE: -89.872900 * DATE/TIME: 1995-01-01T00:00:00 * ELEVATION: 98.0 m * LOCATION: Mississippi, United States of America * CAMPAIGN: WCRP/GEWEX * METHOD/DEVICE: Monitoring station
Data Types:
  • Tabular Data
Abstract: This dataset includes annual mosaics of Antarctic ice velocity derived from Landsat 8 images between December, 2013 and April, 2019, which was updated in 2020 in order to produce multi-year annual ice velocity mosaics and improve the quality of products including non-local means (NLM) filter, and absolute calibration using rock outcrops data. The resulting Version 2 of the mosaics offer reduced local errors, improved spatial resolution as described in the README file. Category: geoscientificInformation Source: Not Available Supplemental Information: Version 202003 Coverage: EVENT LABEL: * LATITUDE: -90.000000 * LONGITUDE: 0.000000
Data Types:
  • Tabular Data
Abstract: Lake Teletskoye (spanning 51°20′ to 51°47′N and 87°15′ to 87°50′E) is the largest lake in the Altai Mountains and is 77 km long and 330 m deep.The core location (51°43′N, 87°39′E) was at the deepest part of the lake. The altitude of the mountains surrounding the lake is 1900 m a.s.l. on average. Due to higher annual precipitation at the area, the steppe belt is absencent but it occurs, at least fragmentarily, in other parts of the mountains (Kuminova, 1960). Only very small patches along the lakeshore represent steppe-like vegetation. Birch forests mixed with meadows occur at lower altitudes, up to 700 m a.s.l. Unique evergreen (so-called 'dark') coniferous forest grow between 700 and 1700ma.s.l. The mountains above 1700 m are covered by Siberian pine (Pinus sibirica) forest. Above the tree line, at about 1800 m, alpine tundra and alpine meadow communities are widespread (Kuminova, 1960). Category: geoscientificInformation Source: Not Available Supplemental Information: Not Availble Coverage: EVENT LABEL: * LATITUDE: 51.716600 * LONGITUDE: 87.650000 * ELEVATION START: 434.0 m * ELEVATION END: 330.0 m * LOCATION: Lake Teletskoye, Altay Mountains, Russia * METHOD/DEVICE: Geological profile sampling
Data Types:
  • Tabular Data
Abstract: Dinoflagellates from the Symbiodiniaceae family and corals have an ecologically important endosymbiotic relationship. Scleractinian corals cannot survive for long periods without their symbionts. These algae, also known as zooxanthellae, on the other hand, thrives outside the coral cells. The free-living populations of zooxanthellae are essential for the resilience of the coral to environmental stressors such as temperature anomalies and ocean acidification. Yet, little is known about how ocean acidification may affect the free-living zooxanthellae. In this study we aimed to test morphological, physiological and biochemical responses of zooxanthellae from the Symbiodinium genus isolated from the coral Mussismilia braziliensis, endemic to the Brazilian coast, to acidification led by increased atmospheric CO2. We tested whether photosynthetic yield, cell ultrastructure, cell density and lipid profile would change after up to 16 days of exposure to pH 7.5 in an atmospheric pCO2 of 1633 μatm. Photosynthetic yield and cell density were negatively affected and chloroplasts showed vesiculated thylakoids, indicating morphological damage. Moreover, Symbiodinium fatty acid profile drastically changed in acidified condition, showing lower polyunsaturated fatty acids and higher saturated fatty acids contents, when compared to the control, non-acidified condition. These results show that seawater acidification as an only stressor causes significant changes in the physiology, biochemistry and ultrastructure of free-living Symbiodinium. Category: geoscientificInformation Source: Not Available Supplemental Information: In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Gattuso et al, 2019) was used to compute a complete and consistent set of carbonate system variables, as described by Nisumaa et al. (2010). In this dataset the original values were archived in addition with the recalculated parameters (see related PI). The date of carbonate chemistry calculation by seacarb is 2020-03-18. Coverage: Not Available
Data Types:
  • Tabular Data