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Article ; Online: Benthic foraminifera in Gulf of Mexico show temporal and spatial dynamics of microplastics.

Plafcan, Martina M / Schwing, Patrick T / Romero, Isabel C / Brooks, Gregg R / Larson, Rebekka A / O'Malley, Bryan J / Stallings, Christopher D

Marine pollution bulletin

2024 Volume 200, Page(s) 116090

Abstract: Microplastics have accumulated in the environment since plastic production began, with present-day observations that range from marine trenches to mountains. However, research on microplastics has only recently begun so it is unclear how they have ... ...

Abstract	Microplastics have accumulated in the environment since plastic production began, with present-day observations that range from marine trenches to mountains. However, research on microplastics has only recently begun so it is unclear how they have changed over time in many oceanic regions. Our study addressed this gap by quantifying the temporal and spatial dynamics of microplastics in two deep-water regions of the Gulf of Mexico (GOM). We isolated agglutinated foraminifera from sediment cores and assessed microplastics that were incorporated into their tests. Our results indicated that microplastics were incorporated by agglutinated foraminifera after plastic production began. Microplastics were higher at deep-water sites and closer to the Mississippi River. This study confirms the presence of microplastic incorporation into agglutinated foraminifera tests and investigates microplastics in deep-water sediments in the GOM. Additional work is needed to fully identify the distribution of microplastics across the GOM and other oceanic basins.
MeSH term(s)	Microplastics ; Plastics ; Foraminifera ; Environmental Monitoring/methods ; Gulf of Mexico ; Water Pollutants, Chemical/analysis ; Geologic Sediments ; Water
Chemical Substances	Microplastics ; Plastics ; Water Pollutants, Chemical ; Water (059QF0KO0R)
Language	English
Publishing date	2024-02-04
Publishing country	England
Document type	Journal Article
ZDB-ID	2001296-2
ISSN	1879-3363 ; 0025-326X
ISSN (online)	1879-3363
ISSN	0025-326X
DOI	10.1016/j.marpolbul.2024.116090
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article: A comprehensive petrochemical vulnerability index for marine fishes in the Gulf of Mexico

Woodyard, Megan / Polidoro, Beth A. / Matson, Cole W. / McManamay, Ryan A. / Saul, Steven / Carpenter, Kent E. / Collier, Tracy K. / Di Giulio, Richard / Grubbs, R. Dean / Linardich, Christi / Moore, Jon A. / Romero, Isabel C. / Schlenk, Daniel / Strongin, Kyle

Science of the total environment. 2022 May 10, v. 820

2022

Abstract: Oil and gas extraction activities occur across the globe, yet species-specific toxicological information on the biological and ecological impacts of exposure to petrochemicals is lacking for the vast majority of marine species. To help prioritize species ...

Abstract	Oil and gas extraction activities occur across the globe, yet species-specific toxicological information on the biological and ecological impacts of exposure to petrochemicals is lacking for the vast majority of marine species. To help prioritize species for recovery, mitigation, and conservation in light of significant toxicological data gaps, a trait-based petrochemical vulnerability index was developed and applied to the more than 1700 marine fishes present across the entire Gulf of Mexico, including all known bony fishes, sharks, rays and chimaeras. Using life history and other traits related to likelihood of exposure, physiological sensitivity to exposure, and population resiliency, final calculated petrochemical vulnerability scores can be used to provide information on the relative sensitivity, or resilience, of marine fish populations across the Gulf of Mexico to oil and gas activities. Based on current knowledge of traits, marine fishes with the highest vulnerability scores primarily occur in areas of high petrochemical activity, are found at or near the surface, and have low reproductive turnover rates and/or highly specialized diet and habitat requirements. Relative population vulnerability scores for marine fishes can be improved with additional toxicokinetic studies, including those that account for the synergistic or additive effect of multiple stressors, as well as increased research on ecological and life history traits, especially for deep living species.
Keywords	additive effect ; chimerism ; diet ; environment ; habitats ; life history ; marine fish ; oils ; toxicology ; Gulf of Mexico
Language	English
Dates of publication	2022-0510
Publishing place	Elsevier B.V.
Document type	Article
ZDB-ID	121506-1
ISSN	1879-1026 ; 0048-9697
ISSN (online)	1879-1026
ISSN	0048-9697
DOI	10.1016/j.scitotenv.2021.152892
Database	NAL-Catalogue (AGRICOLA)

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Article: How quickly will the offshore ecosystem recover from the 2010 Deepwater Horizon oil spill? Lessons learned from the 1979 Ixtoc-1 oil well blowout

Rohal, Melissa / Barrera, Noe / Escobar-Briones, Elva / Brooks, Gregg / Hollander, David / Larson, Rebekka / Montagna, Paul A / Pryor, Marissa / Romero, Isabel C / Schwing, Patrick

Ecological indicators. 2020 Oct., v. 117

2020

Abstract: The Deepwater Horizon (DWH) accident occurred on 20 April 2010 in the Northern Gulf of Mexico and resulted in a deep-sea plume of petroleum hydrocarbons and a marine oiled snow sedimentation and flocculent accumulation (MOSSFA) event. It is hypothesized ... ...

Abstract	The Deepwater Horizon (DWH) accident occurred on 20 April 2010 in the Northern Gulf of Mexico and resulted in a deep-sea plume of petroleum hydrocarbons and a marine oiled snow sedimentation and flocculent accumulation (MOSSFA) event. It is hypothesized that recovery will occur when the contaminated sediment is buried below the biologically active zone of 10 cm. Recovery rate can be inferred from the similar Ixtoc-1 blowout and sub-surface oil release that occurred in the Bay of Campeche, Mexico in 1979 – 1980. In 2015, sediment chemistry effects from the Ixtoc-1 were found at 2.4– 2.8 cm sediment depth at stations within 81 and 273 km away. Trends of total polycyclic aromatic hydrocarbon concentration, macrofauna family-level diversity, and the nematode to copepod ratio with sediment depth supports the interpretation that the benthic community has not yet recovered from the Ixtoc-1 spill. Based on a sedimentation rate of 0.072 cm/year, the Ixtoc-1 benthic community will recover in 103 more years beyond 2015. Recovery around the DWH will occur in 50 years based on an average sedimentation rate of 0.2 cm/year. These rates demonstrate that benthic recovery in the deep sea is very slow.
Keywords	Copepoda ; Nematoda ; accidents ; benthic organisms ; chemistry ; ecosystems ; fauna ; oil fields ; oil spills ; oils ; petroleum ; polycyclic aromatic hydrocarbons ; sediment contamination ; sedimentation rate ; sediments ; snow ; Gulf of Mexico ; Mexico
Language	English
Dates of publication	2020-10
Publishing place	Elsevier Ltd
Document type	Article
Note	NAL-AP-2-clean
ZDB-ID	2036774-0
ISSN	1872-7034 ; 1470-160X
ISSN (online)	1872-7034
ISSN	1470-160X
DOI	10.1016/j.ecolind.2020.106593
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Article: The effects of experimental oil-contaminated marine snow on meiofauna in a microcosm

Rohal, Melissa / Barrera, Noe / Van Eenennaam, Justine S / Foekema, Edwin M / Montagna, Paul A / Murk, Albertinka J / Pryor, Marissa / Romero, Isabel C

Marine pollution bulletin. 2020 Jan., v. 150

2020

Abstract: During an oil spill, a marine oil snow sedimentation and flocculent accumulation (MOSSFA) event can transport oil residue to the seafloor. Microcosm experiments were used to test the effects of oil residues on meiofaunal abundance and the nematode: ... ...

Abstract	During an oil spill, a marine oil snow sedimentation and flocculent accumulation (MOSSFA) event can transport oil residue to the seafloor. Microcosm experiments were used to test the effects of oil residues on meiofaunal abundance and the nematode:copepod ratio under different oil concentrations and in the presence and absence of marine snow. Total meiofaunal abundance was 1.7 times higher in the presence of snow regardless of oil concentration. The nematode:copepod ratio was 13.9 times lower in the snow treatment regardless of the oil concentration. Copepod abundance was 24.3 times higher in marine snow treatments and 4.3 times higher at the highest oil concentration. Nematode abundance was 1.7 times lower at the highest oil concentration. The result of the experiment was an enrichment effect. The lack of a toxic response in the experiments may be attributable to relatively low oil concentrations, weathering processes, and the absence of chemically dispersed oil.
Keywords	Copepoda ; Nematoda ; fauna ; marine pollution ; marine sediments ; oil spills ; oils ; snow ; toxicity
Language	English
Dates of publication	2020-01
Publishing place	Elsevier Ltd
Document type	Article
Note	NAL-AP-2-clean
ZDB-ID	2001296-2
ISSN	1879-3363 ; 0025-326X
ISSN (online)	1879-3363
ISSN	0025-326X
DOI	10.1016/j.marpolbul.2019.110656
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Article ; Online: A comprehensive petrochemical vulnerability index for marine fishes in the Gulf of Mexico.

Woodyard, Megan / Polidoro, Beth A / Matson, Cole W / McManamay, Ryan A / Saul, Steven / Carpenter, Kent E / Collier, Tracy K / Di Giulio, Richard / Grubbs, R Dean / Linardich, Christi / Moore, Jon A / Romero, Isabel C / Schlenk, Daniel / Strongin, Kyle

The Science of the total environment

2022 Volume 820, Page(s) 152892

Abstract	Oil and gas extraction activities occur across the globe, yet species-specific toxicological information on the biological and ecological impacts of exposure to petrochemicals is lacking for the vast majority of marine species. To help prioritize species for recovery, mitigation, and conservation in light of significant toxicological data gaps, a trait-based petrochemical vulnerability index was developed and applied to the more than 1700 marine fishes present across the entire Gulf of Mexico, including all known bony fishes, sharks, rays and chimaeras. Using life history and other traits related to likelihood of exposure, physiological sensitivity to exposure, and population resiliency, final calculated petrochemical vulnerability scores can be used to provide information on the relative sensitivity, or resilience, of marine fish populations across the Gulf of Mexico to oil and gas activities. Based on current knowledge of traits, marine fishes with the highest vulnerability scores primarily occur in areas of high petrochemical activity, are found at or near the surface, and have low reproductive turnover rates and/or highly specialized diet and habitat requirements. Relative population vulnerability scores for marine fishes can be improved with additional toxicokinetic studies, including those that account for the synergistic or additive effect of multiple stressors, as well as increased research on ecological and life history traits, especially for deep living species.
MeSH term(s)	Animals ; Ecosystem ; Fishes/physiology ; Gulf of Mexico ; Mexico ; Oil and Gas Industry ; Petroleum Pollution ; Reproduction ; Species Specificity ; Water Pollutants, Chemical
Chemical Substances	Water Pollutants, Chemical
Language	English
Publishing date	2022-01-17
Publishing country	Netherlands
Document type	Journal Article
ZDB-ID	121506-1
ISSN	1879-1026 ; 0048-9697
ISSN (online)	1879-1026
ISSN	0048-9697
DOI	10.1016/j.scitotenv.2021.152892
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: The effects of experimental oil-contaminated marine snow on meiofauna in a microcosm.

Rohal, Melissa / Barrera, Noe / Van Eenennaam, Justine S / Foekema, Edwin M / Montagna, Paul A / Murk, Albertinka J / Pryor, Marissa / Romero, Isabel C

Marine pollution bulletin

2019 Volume 150, Page(s) 110656

Abstract	During an oil spill, a marine oil snow sedimentation and flocculent accumulation (MOSSFA) event can transport oil residue to the seafloor. Microcosm experiments were used to test the effects of oil residues on meiofaunal abundance and the nematode:copepod ratio under different oil concentrations and in the presence and absence of marine snow. Total meiofaunal abundance was 1.7 times higher in the presence of snow regardless of oil concentration. The nematode:copepod ratio was 13.9 times lower in the snow treatment regardless of the oil concentration. Copepod abundance was 24.3 times higher in marine snow treatments and 4.3 times higher at the highest oil concentration. Nematode abundance was 1.7 times lower at the highest oil concentration. The result of the experiment was an enrichment effect. The lack of a toxic response in the experiments may be attributable to relatively low oil concentrations, weathering processes, and the absence of chemically dispersed oil.
MeSH term(s)	Animals ; Copepoda ; Environmental Monitoring ; Geologic Sediments ; Nematoda ; Petroleum Pollution ; Water Pollutants, Chemical/toxicity
Chemical Substances	Water Pollutants, Chemical
Language	English
Publishing date	2019-10-31
Publishing country	England
Document type	Journal Article
ZDB-ID	2001296-2
ISSN	1879-3363 ; 0025-326X
ISSN (online)	1879-3363
ISSN	0025-326X
DOI	10.1016/j.marpolbul.2019.110656
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Article ; Online: Decadal Assessment of Polycyclic Aromatic Hydrocarbons in Mesopelagic Fishes from the Gulf of Mexico Reveals Exposure to Oil-Derived Sources.

Romero, Isabel C / Sutton, Tracey / Carr, Brigid / Quintana-Rizzo, Ester / Ross, Steve W / Hollander, David J / Torres, Joseph J

Environmental science & technology

2018 Volume 52, Issue 19, Page(s) 10985–10996

Abstract: This study characterizes a decadal assessment of polycyclic aromatic hydrocarbons (PAHs) in the muscle tissues of mesopelagic fish species as indicators of the environmental health of the Gulf of Mexico (GoM) deep-pelagic ecosystem. Mesopelagic fishes ... ...

Abstract	This study characterizes a decadal assessment of polycyclic aromatic hydrocarbons (PAHs) in the muscle tissues of mesopelagic fish species as indicators of the environmental health of the Gulf of Mexico (GoM) deep-pelagic ecosystem. Mesopelagic fishes were collected prior to the Deepwater Horizon (DWH) oil spill (2007), immediately post-spill (2010), 1 year after the spill (2011), and 5-6 years post-spill (2015-2016) to assess if the mesopelagic ecosystem was exposed to, and retained, PAH compounds from the DWH spill. Results indicated that a 7- to 10-fold increase in PAHs in fish muscle tissues occurred in 2010-2011 (4972 ± 1477 ng/g) compared to 2007 (630 ± 236 ng/g). In 2015-2016, PAH concentrations decreased close to the levels measured in 2007 samples (827 ± 138 ng/g); however, the composition of PAHs still resembles a petrogenic source similar to samples collected in 2010-2011. PAH composition in muscle samples indicated that natural sources (e.g., Mississippi River and natural seeps) or spatial variability within the GoM do not explain the temporal variability of PAHs observed from 2007 to 2016. Furthermore, analysis of different fish tissues indicated the dietary intake and maternal transfer of PAHs as the primary mechanisms for bioaccumulation in 2015-2016, explaining the elevated levels and composition of PAHs in ovarian eggs.
MeSH term(s)	Animals ; Ecosystem ; Environmental Monitoring ; Fishes ; Gulf of Mexico ; Mississippi ; Petroleum Pollution ; Polycyclic Aromatic Hydrocarbons ; Water Pollutants, Chemical
Chemical Substances	Polycyclic Aromatic Hydrocarbons ; Water Pollutants, Chemical
Language	English
Publishing date	2018-09-11
Publishing country	United States
Document type	Journal Article ; Research Support, Non-U.S. Gov't ; Research Support, U.S. Gov't, Non-P.H.S.
ISSN	1520-5851
ISSN (online)	1520-5851
DOI	10.1021/acs.est.8b02243
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: Tracing the incorporation of carbon into benthic foraminiferal calcite following the Deepwater Horizon event.

Schwing, Patrick T / Chanton, Jeffrey P / Romero, Isabel C / Hollander, David J / Goddard, Ethan A / Brooks, Gregg R / Larson, Rebekka A

Environmental pollution (Barking, Essex : 1987)

2018 Volume 237, Page(s) 424–429

Abstract: Following the Deepwater Horizon (DWH) event in 2010, hydrocarbons were deposited on the continental slope in the northeastern Gulf of Mexico through marine oil snow sedimentation and flocculent accumulation (MOSSFA). The objective of this study was to ... ...

Abstract	Following the Deepwater Horizon (DWH) event in 2010, hydrocarbons were deposited on the continental slope in the northeastern Gulf of Mexico through marine oil snow sedimentation and flocculent accumulation (MOSSFA). The objective of this study was to test the hypothesis that benthic foraminiferal δ
MeSH term(s)	Calcium Carbonate/analysis ; Carbon/analysis ; Environmental Monitoring/methods ; Flocculation ; Foraminifera/chemistry ; Geologic Sediments ; Gulf of Mexico ; Hydrocarbons/analysis ; Lead Radioisotopes ; Petroleum Pollution/analysis ; Snow ; Thorium ; Water Pollutants, Chemical/analysis
Chemical Substances	Hydrocarbons ; Lead Radioisotopes ; Lead-210 ; Thorium-234 ; Water Pollutants, Chemical ; Thorium (60YU5MIG9W) ; Carbon (7440-44-0) ; Calcium Carbonate (H0G9379FGK)
Language	English
Publishing date	2018-06
Publishing country	England
Document type	Journal Article
ZDB-ID	280652-6
ISSN	1873-6424 ; 0013-9327 ; 0269-7491
ISSN (online)	1873-6424
ISSN	0013-9327 ; 0269-7491
DOI	10.1016/j.envpol.2018.02.066
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Zs.A 2599: Show issues

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Article ; Online: The effects of experimental oil-contaminated marine snow on meiofauna in a microcosm

Rohal, Melissa / Barrera, Noe / Van Eenennaam, Justine S. / Foekema, Edwin M. / Montagna, Paul A. / Murk, Albertinka J. / Pryor, Marissa / Romero, Isabel C.

Marine Pollution Bulletin

2020 Volume 150

Abstract	During an oil spill, a marine oil snow sedimentation and flocculent accumulation (MOSSFA) event can transport oil residue to the seafloor. Microcosm experiments were used to test the effects of oil residues on meiofaunalabundance and the nematode:copepod ratio under different oil concentrations and in the presence and absence of marine snow. Total meiofaunal abundance was 1.7 times higher in the presence of snow regardless of oil concentration. The nematode:copepod ratio was 13.9 times lower in the snow treatment regardless of the oil concentration. Copepod abundance was 24.3 times higher in marine snow treatments and 4.3 times higher at the highest oil concentration. Nematode abundance was 1.7 times lower at the highest oil concentration. The result of the experiment was an enrichment effect. The lack of a toxic response in the experiments may be attributable to relatively low oil concentrations, weathering processes, and the absence of chemically dispersed oil.
Keywords	Benthic meiofauna ; MOSSFA ; Marine snow ; Microcosm ; Nematode:Copepod ratio ; Oil
Language	English
Publishing country	nl
Document type	Article ; Online
ZDB-ID	2001296-2
ISSN	1879-3363 ; 0025-326X
ISSN (online)	1879-3363
ISSN	0025-326X
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article: Spatial gradients in plant leaf wax D/H across a coastal salt marsh in southern California

Romero, Isabel C / Feakins, Sarah J

Organic geochemistry. 2011 July, v. 42, no. 6

2011

Abstract: Coastal salt marsh ecosystems contain strong environmental gradients that are anticipated to influence the D/H ratios recorded in the leaf waxes of salt-tolerant plants. We characterized the molecular and hydrogen isotopic composition of alkanes in plant ...

Abstract	Coastal salt marsh ecosystems contain strong environmental gradients that are anticipated to influence the D/H ratios recorded in the leaf waxes of salt-tolerant plants. We characterized the molecular and hydrogen isotopic composition of alkanes in plant and sediment samples as well as the D/H ratios of environmental and plant waters across an elevation and inundation gradient in a southern Californian, coastal salt marsh. We sampled the dominant salt marsh plant species: Salicornia virginica, Arthrocnemum subterminale and Jamuea carnosa (all succulents), as well as Monanthochloe littoralis and Limonium californicum (nonsucculents). Plant xylem water hydrogen isotopic compositions indicate a shift in source waters from meteoric influences at upland sites (δD value −20‰) to seawater dominated values (0‰) at lowland areas. We found leaf water D enrichment relative to xylem water ranging from mean δD values of +54‰ (upland) to +28‰ (lowland), interpreted as a reduction of transpiration with increasing inundation time. This has the effect of increasing the net fractionation between source water and leaf wax product across the environmental gradient from mean values of −101‰ (upland) to −134‰ (lowland), with an attenuated signal recorded in the δD values of plant leaf wax n-alkanes (−122‰ to −136‰). These results constrain the hydrogen isotopic composition of salt marsh organic matter that may contribute to marine carbon budgets of the Santa Barbara Basin, and further indicate the potential for plant leaf waxes to resolve paleoenvironmental change, including sea level change, in sediment cores from salt marsh ecosystems.
Keywords	Limonium ; Salicornia europaea ; alkanes ; cacti and succulents ; carbon ; ecosystems ; fractionation ; highlands ; hydrogen ; leaves ; lowlands ; organic matter ; salt marsh plants ; salt marshes ; salt tolerance ; sea level ; seawater ; sediments ; transpiration ; waxes ; xylem ; California
Language	English
Dates of publication	2011-07
Size	p. 618-629.
Publishing place	Elsevier Ltd
Document type	Article
ISSN	0146-6380
DOI	10.1016/j.orggeochem.2011.04.001
Database	NAL-Catalogue (AGRICOLA)

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