Isotopic composition of sinking particles
Oil effects, recovery and baselines in the Gulf of Mexico, 2010–2015
Bibliographic Data
| ID | 19568369 |
|---|---|
| Authors | Jeffrey P Chanton (0000-0002-3303-9708, Florida State University), S L C Giering (0000-0002-3090-1876, University of California, Santa Barbara), Samantha Bosman (0000-0003-1697-4080, Florida State University), Samantha H Bosman, Kelsey L Rogers (0000-0002-5541-2374), Kelsey Rogers (Florida State University), Julia Sweet (0009-0002-9780-4621, University of California, Santa Barbara), Vernon Asper (0000-0002-5774-9472, Stennis Space Center), Vernon L Asper, Arne R Diercks (0000-0002-7313-6983, Stennis Space Center), Uta Passow (0000-0002-2296-6936, University of California, Santa Barbara) |
| Editors | Jody W Deming, Lisa A Miller (0000-0001-9726-3744) |
| Year | 2018 |
| Volume | 6 |
| Publication date | 2018-01-01 |
| Peer Reviewed | Yes |
| Open Access | Yes |
| Type | ARTICLE |
| Venue | Elementa Science of the Anthropocene (JOURNAL) |
| Journal identifiers | ISSN: 2325-1026 • E-ISSN: 2325-1026 |
| Publisher | University of California Press (PUBLISHER • US) |
| DOI | 10.1525/elementa.298 |
| OpenAlex | W2806899542 |
| Language | EN |
| Citations received | 3 |
| References cited | 71 |
The extensive release of oil during the 2010 Deepwater Horizon spill in the northern Gulf of Mexico perturbed the pelagic ecosystem and associated sinking material. To gauge the recovery and post-spill baseline sources, we measured Δ14C, δ13C and δ34S of sinking particles near the spill site and at a reference site and natural seep site. Particulates were collected August 2010–April 2016 in sediment traps moored at sites with depths of 1160–1660 m. Near the spill site, changes in Δ14C indicated a 3-year recovery period, while δ34S indicated 1–2 years, which agreed with estimates of 1–2 years based on hydrocarbon composition. Under post-spill baseline conditions, carbon inputs to sinking particulates in the northern Gulf were dominated by surface marine production (80–85%) and riverine inputs (15–20%). Near the spill site, Δ14C values were depleted in October 2010 (–140 to –80‰), increasing systematically by 0.07 ± 0.02‰ day–1 until July 2013 when values reached –3.2 ± 31.0‰. This Δ14C baseline was similar to particulates at the reference site (3.8 ± 31.1‰). At both sites, δ13C values stayed constant throughout the study period (–21.9 ± 0.5‰ and –21.9 ± 0.9‰, respectively). δ34S near the spill site was depleted (7.4 ± 3.1‰) during October 2010–September 2011, but enriched (16.9 ± 2.0‰) and similar to the reference site (16.2 ± 3.1‰) during November 2012–April 2015. At the seep site, Δ14C values were –21.7 ± 45.7‰ except during August 2012–January 2013 when a significant Δ14C depletion of –109.0 ± 29.1‰ was observed. We interpret this depletion period, also observed in δ13C data, as caused by the incorporation of naturally seeped oil into sinking particles. Determination of post-spill baselines for these isotopic signatures allows for evaluation of anthropogenic inputs in future
Bay · Ecosystem · Methane · Particulates · Pelagic zone · Petroleum seep · Stable isotope ratio · δ13C · Environmental Science · Isotope Analysis in Ecology · Marine and coastal ecosystems · Oil Spill Detection and Mitigation · Ecology · Geology · Oceanography
The ecosystem baseline for particle flux in the Northern Gulf of Mexico
Scales of seafloor sediment resuspension in the northern Gulf of Mexico
The influence of mesoscale and submesoscale circulation on sinking particles in the northern Gulf of Mexico
Oil carbon entered the coastal planktonic food web during the Deepwater Horizon oil spill
Radiocarbon evidence that carbon from the Deepwater Horizon spill entered the planktonic food web of the Gulf of Mexico
Marine snow formation in the aftermath of the Deepwater Horizon oil spill in the Gulf of Mexico
Discussion Reporting of 14 C Data
Assessing the impacts of oil-associated marine snow formation and sedimentation during and after the Deepwater Horizon oil spill
| Unique citing works | 3 |
|---|---|
| Citations per year | 0.38 |
| Citation span | 2018 - 2026 (9) |
| Citation velocity | current |
| Highly cited | No |
| Citation types | Neutral: 2 |