1
|
Ortmann AC, Cobanli SE, Wohlgeschaffen G, Poon HY, Ryther C, Greer CW, Wasserscheid J, Elias M, Robinson B, King TL. Factors that affect water column hydrocarbon concentrations have minor impacts on microbial responses following simulated diesel fuel spills. MARINE POLLUTION BULLETIN 2023; 194:115358. [PMID: 37567129 DOI: 10.1016/j.marpolbul.2023.115358] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Revised: 07/24/2023] [Accepted: 07/29/2023] [Indexed: 08/13/2023]
Abstract
Effects of season and mixing on hydrocarbon concentrations and the microbial community response was explored in a series of mesocosm experiments simulating surface spills of diesel into coastal waters. Mixing of any amount contributed to hydrocarbons entering the water column, but diesel fuel composition had a significant effect on hydrocarbon concentrations. Higher initial concentrations of aromatic hydrocarbons resulted in higher water column concentrations, with minimal differences among seasons due to high variability. Regardless of the concentrations of hydrocarbons, prokaryotes increased and there were higher relative abundances of hydrocarbon affiliated bacteria with indications of biodegradation within 4 d of exposure. As concentrations decreased over time, the eukaryote community shifted from the initial community to one which appeared to be composed of organisms with some resilience to hydrocarbons. This series of experiments demonstrates the wide range of conditions under which natural attenuation of diesel fuel is an effective response.
Collapse
Affiliation(s)
- Alice C Ortmann
- Centre for Offshore Oil, Gas and Energy Research, Fisheries and Oceans Canada, Bedford Institute of Oceanography, 1 Challenger Drive, Dartmouth, NS B2Y 4A2, Canada.
| | - Susan E Cobanli
- Centre for Offshore Oil, Gas and Energy Research, Fisheries and Oceans Canada, Bedford Institute of Oceanography, 1 Challenger Drive, Dartmouth, NS B2Y 4A2, Canada
| | - Gary Wohlgeschaffen
- Centre for Offshore Oil, Gas and Energy Research, Fisheries and Oceans Canada, Bedford Institute of Oceanography, 1 Challenger Drive, Dartmouth, NS B2Y 4A2, Canada
| | - Ho Yin Poon
- Centre for Offshore Oil, Gas and Energy Research, Fisheries and Oceans Canada, Bedford Institute of Oceanography, 1 Challenger Drive, Dartmouth, NS B2Y 4A2, Canada
| | - Camilla Ryther
- Dalhousie University, 6299 South Street, Halifax, NS B3H 4R2, Canada
| | - Charles W Greer
- National Research Council of Canada, Energy, Mining and Environment Research Centre, 6100 Royalmount Ave, Montreal, PQ H4P 2R2, Canada
| | - Jessica Wasserscheid
- National Research Council of Canada, Energy, Mining and Environment Research Centre, 6100 Royalmount Ave, Montreal, PQ H4P 2R2, Canada
| | - Miria Elias
- National Research Council of Canada, Energy, Mining and Environment Research Centre, 6100 Royalmount Ave, Montreal, PQ H4P 2R2, Canada
| | - Brian Robinson
- Centre for Offshore Oil, Gas and Energy Research, Fisheries and Oceans Canada, Bedford Institute of Oceanography, 1 Challenger Drive, Dartmouth, NS B2Y 4A2, Canada
| | - Thomas L King
- Centre for Offshore Oil, Gas and Energy Research, Fisheries and Oceans Canada, Bedford Institute of Oceanography, 1 Challenger Drive, Dartmouth, NS B2Y 4A2, Canada
| |
Collapse
|
2
|
Ferreira NM, Coutinho R, de Oliveira LS. Emerging studies on oil pollution biomonitoring: A systematic review. MARINE POLLUTION BULLETIN 2023; 192:115081. [PMID: 37236096 DOI: 10.1016/j.marpolbul.2023.115081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2022] [Revised: 05/15/2023] [Accepted: 05/16/2023] [Indexed: 05/28/2023]
Abstract
In the last decade, several methods were applied to monitor the impact of oil pollution on marine organisms. Recent studies showed an eminent need to standardize these methods to produce comparable results. Here we present the first thorough systematic review of the literature on oil pollution monitoring methods in the last decade. The literature search resulted on 390 selected original articles, categorized according to the analytical method employed. Except for Ecosystem-level analyses, most methods are used on short-term studies. The combination of Biomarker and Bioaccumulation analysis is the most frequently adopted strategy for oil pollution biomonitoring, followed by Omic analyses. This systematic review describes the principles of the most frequently used monitoring tools, presents their advantages, limitations, and main findings and, as such, could be used as a guideline for future researches on the field.
Collapse
Affiliation(s)
- Nícollas Menezes Ferreira
- Department of Marine Biotechnology, Instituto de Estudos do Mar Almirante Paulo Moreira-IEAPM, Arraial do Cabo, RJ 28930000, Brazil; Marine Biotecnology Graduate Program, Instituto de Estudos do Mar Almirante Paulo Moreia-IEAPM and Universidade Federal Fluminense-UFF, Niterói, RJ 24220900, Brazil
| | - Ricardo Coutinho
- Department of Marine Biotechnology, Instituto de Estudos do Mar Almirante Paulo Moreira-IEAPM, Arraial do Cabo, RJ 28930000, Brazil; Marine Biotecnology Graduate Program, Instituto de Estudos do Mar Almirante Paulo Moreia-IEAPM and Universidade Federal Fluminense-UFF, Niterói, RJ 24220900, Brazil
| | - Louisi Souza de Oliveira
- Department of Marine Biotechnology, Instituto de Estudos do Mar Almirante Paulo Moreira-IEAPM, Arraial do Cabo, RJ 28930000, Brazil; Marine Biotecnology Graduate Program, Instituto de Estudos do Mar Almirante Paulo Moreia-IEAPM and Universidade Federal Fluminense-UFF, Niterói, RJ 24220900, Brazil.
| |
Collapse
|
3
|
Brock ML, Richardson R, Ederington-Hagy M, Nigro L, Snyder RA, Jeffrey WH. Temporal variability of microbial response to crude oil exposure in the northern Gulf of Mexico. Front Ecol Evol 2023. [DOI: 10.3389/fevo.2023.1096880] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/12/2023] Open
Abstract
Oil spills are common occurrences in the United States and can result in extensive ecological damage. The 2010 Deepwater Horizon oil spill in the Gulf of Mexico was the largest accidental spill recorded. Many studies were performed in deep water habitats to understand the microbial response to the released crude oil. However, much less is known about how planktonic coastal communities respond to oil spills and whether that response might vary over the course of the year. Understanding this temporal variability would lend additional insight into how coastal Florida habitats may have responded to the Deepwater Horizon oil spill. To assess this, the temporal response of planktonic coastal microbial communities to acute crude oil exposure was examined from September 2015 to September 2016 using seawater samples collected from Pensacola Beach, Florida, at 2-week intervals. A standard oil exposure protocol was performed using water accommodated fractions made from MC252 surrogate oil under photo-oxidizing conditions. Dose response curves for bacterial production and primary production were constructed from 3H-leucine incorporation and 14C-bicarbonate fixation, respectively. To assess drivers of temporal patterns in inhibition, a suite of biological and environmental parameters was measured including bacterial counts, chlorophyll a, temperature, salinity, and nutrients. Additionally, 16S rRNA sequencing was performed on unamended seawater to determine if temporal variation in the in situ bacterial community contributed to differences in inhibition. We observed that there is temporal variation in the inhibition of primary and bacterial production due to acute crude oil exposure. We also identified significant relationships of inhibition with environmental and biological parameters that quantitatively demonstrated that exposure to water-soluble crude oil constituents was most detrimental to planktonic microbial communities when temperature was high, when there were low inputs of total Kjeldahl nitrogen, and when there was low bacterial diversity or low phytoplankton biomass.
Collapse
|
4
|
Cobanli SE, Wohlgeschaffen G, Ryther C, MacDonald J, Gladwell A, Watts T, Greer CW, Elias M, Wasserscheid J, Robinson B, King TL, Ortmann AC. Microbial community response to simulated diluted bitumen spills in coastal seawater and implications for oil spill response. FEMS Microbiol Ecol 2022; 98:6563616. [PMID: 35380637 DOI: 10.1093/femsec/fiac033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2021] [Revised: 03/02/2022] [Accepted: 04/01/2022] [Indexed: 11/12/2022] Open
Abstract
Oil spills in coastal waters can have devastating impacts on local ecosystems, from the microscopic base through to mammals and seabirds. Increasing transport of diluted bitumen, has led to concerns about how this novel product might impact coastal ecosystems. A mesocosm study determined that the type of diluent and the season can affect the concentrations of hydrocarbons entering the water column from a surface spill. Those same mesocosms were sampled to determine if diluent type and season also affected the microbial response a surface spill. Overall, there were no differences in impacts among the three types of diluted bitumen, but there were consistent responses to all products within each season. Although microbial abundances with diluted bitumen rarely differed from unoiled controls, community structure in these organisms shifted in response to hydrocarbons, with hydrocarbon-degrading bacteria becoming more abundant. The relative abundance of heterotrophic eukaryotes also increased with diluted bitumen, with few photosynthetic organisms responding positively to oil. Overall shifts in the microbial communities were minimal relative to spills of conventional oil products, with low concentrations of hydrocarbons in the water column. Oil spill response should focus on addressing the surface slick to prevent sinking or stranding to minimize ecosystem impacts.
Collapse
Affiliation(s)
- Susan E Cobanli
- Centre for Offshore Oil, Gas and Energy Research, Fisheries and Oceans Canada, Canada
| | - Gary Wohlgeschaffen
- Centre for Offshore Oil, Gas and Energy Research, Fisheries and Oceans Canada, Canada
| | | | | | | | | | - Charles W Greer
- National Research Council of Canada, Energy, Mining and Environment Research Centre, Canada
| | - Miria Elias
- National Research Council of Canada, Energy, Mining and Environment Research Centre, Canada
| | - Jessica Wasserscheid
- National Research Council of Canada, Energy, Mining and Environment Research Centre, Canada
| | - Brian Robinson
- Centre for Offshore Oil, Gas and Energy Research, Fisheries and Oceans Canada, Canada
| | - Thomas L King
- Centre for Offshore Oil, Gas and Energy Research, Fisheries and Oceans Canada, Canada
| | - Alice C Ortmann
- Centre for Offshore Oil, Gas and Energy Research, Fisheries and Oceans Canada, Canada
| |
Collapse
|
5
|
Waugh JK, Jones T, Parrish JK. Using beached bird data to assess seabird oiling susceptibility. MARINE POLLUTION BULLETIN 2022; 176:113437. [PMID: 35183023 DOI: 10.1016/j.marpolbul.2022.113437] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Revised: 01/14/2022] [Accepted: 02/04/2022] [Indexed: 06/14/2023]
Abstract
Oil spills can cause severe impacts on seabirds, the extent of which varies by species. We investigated taxon-specific susceptibility using data from the Nestucca and Tenyo Maru oil spills in the northeast Pacific together with seasonally and spatially overlapping baseline beached bird abundance data collected over a 17-year time-period. Multivariate analyses revealed patterns of variation between spill and non-spill data, primarily driven by differences in the relative abundance of common murres (Uria aalge) and northern fulmars (Fulmarus glacialis). In subsequent susceptibility analyses, alcid (Alcidae spp.) carcasses were generally overrepresented in spill data, while gulls (Larus spp.), tubenoses (Procellariformes spp.), and cormorants (Phalacrocoracidae spp.) were generally under-represented. We found that the baseline data had high variability, suggesting a need for many years of baseline data. We propose that where appropriate baseline data exists, this method can be employed to investigate the seabirds most vulnerable to oiling.
Collapse
Affiliation(s)
- Jazzmine K Waugh
- Department of Biology, University of Washington, 24 Kincaid Hall, Seattle, WA 98105, USA.
| | - Timothy Jones
- School of Aquatic and Fishery Sciences, University of Washington, 1122 NE Boat Street, Seattle, WA 98105, USA
| | - Julia K Parrish
- Department of Biology, University of Washington, 24 Kincaid Hall, Seattle, WA 98105, USA; School of Aquatic and Fishery Sciences, University of Washington, 1122 NE Boat Street, Seattle, WA 98105, USA
| |
Collapse
|
6
|
Sweet JA, Bargu S, Morrison WL, Parsons M, Pathare MG, Roberts BJ, Soniat TM, Stauffer BA. Phytoplankton dynamics in Louisiana estuaries: Building a baseline to understand current and future change. MARINE POLLUTION BULLETIN 2022; 175:113344. [PMID: 35124379 DOI: 10.1016/j.marpolbul.2022.113344] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2021] [Revised: 01/04/2022] [Accepted: 01/09/2022] [Indexed: 06/14/2023]
Abstract
Louisiana estuaries are important habitats in the northern Gulf of Mexico, a region undergoing significant and sustained human- and climate-driven changes. This paper synthesizes data collected over multiple years from four Louisiana estuaries - Breton Sound, Terrebonne Bay, the Atchafalaya River Delta Estuary, and Vermilion Bay - to characterize trends in phytoplankton biomass, community composition, and the environmental factors influencing them. Results highlight similarities in timing and composition of maximum chlorophyll, with salinity variability often explaining biomass trends. Distinct drivers for biomass versus community structure were observed in all four estuarine systems. Systems shared a lack of significant correlation between river discharge and overall phytoplankton biomass, while discharge was important for understanding community composition. Temperature was a significant explanatory variable for both biomass and community composition in only one system. These results provide a regional view of phytoplankton dynamics in Louisiana estuaries critical to understanding and predicting the effects of ongoing change.
Collapse
Affiliation(s)
- Julia A Sweet
- Department of Biology, University of Louisiana at Lafayette, Lafayette, LA 70503, USA.
| | - Sibel Bargu
- Department of Oceanography and Coastal Sciences, Louisiana State University, Baton Rouge, LA 70803, USA
| | - Wendy L Morrison
- Louisiana Universities Marine Consortium, Cocodrie, LA 70344, USA
| | - Michael Parsons
- Coastal Watershed Institute, Florida Gulf Coast University, Fort Myers, FL 33965, USA
| | - Mrunmayee G Pathare
- Department of Biology, University of Louisiana at Lafayette, Lafayette, LA 70503, USA
| | - Brian J Roberts
- Louisiana Universities Marine Consortium, Cocodrie, LA 70344, USA
| | - Thomas M Soniat
- Department of Biological Sciences, University of New Orleans, New Orleans, LA 70148, USA
| | - Beth A Stauffer
- Department of Biology, University of Louisiana at Lafayette, Lafayette, LA 70503, USA
| |
Collapse
|
7
|
Putzeys S, Juárez-Fonseca M, Valencia-Agami SS, Mendoza-Flores A, Cerqueda-García D, Aguilar-Trujillo AC, Martínez-Cruz ME, Okolodkov YB, Arcega-Cabrera F, Herrera-Silveira JA, Aguirre-Macedo ML, Pech D. Effects of a Light Crude Oil Spill on a Tropical Coastal Phytoplankton Community. BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2022; 108:55-63. [PMID: 34272966 DOI: 10.1007/s00128-021-03306-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2020] [Accepted: 06/08/2021] [Indexed: 06/13/2023]
Abstract
Oiling scenarios following spills vary in concentration and usually can affect large coastal areas. Consequently, this research evaluated different crude oil concentrations (10, 40, and 80 mg L-1) on the nearshore phytoplanktonic community in the southern Gulf of Mexico. This experiment was carried out for ten days using eight units of 2500 L each; factors monitored included shifts in phytoplankton composition, physicochemical parameters and the culturable bacterial abundance of heterotrophic and hydrocarbonoclastic groups. The temperature, salinity, and nutrient concentrations measured were within the ranges previously reported for Yucatan Peninsula waters. The total hydrocarbon concentration (TPH) in the control at T0 indicated the presence of hydrocarbons (PAHs 0.80 μg L-1, aliphatics 7.83 μg L-1 and UCM 184.09 μg L-1). At T0, the phytoplankton community showed a similar assemblage structure and composition in all treatments. At T10, the community composition remained heterogeneous in the control, in agreement with previous reports for the area. However, for oiled treatments, Bacillariophyceae dominated at T10. Hydrocarbonoclastic bacteria were associated with oiled treatments throughout the experiment, while heterotrophic bacteria were associated with control conditions. Our results agreed with previous works at the taxonomic level showing the presence of Bacillariophyceae and Dinophyceae in oil-related treatments, where these groups showed the major interactions in co-occurrence networks. In contrast, Chlorophyceae showed the key node in the co-occurrence network for the control. This study aims to contribute to knowledge on phytoplankton community shifts during a crude oil spill in subtropical oligotrophic regions.
Collapse
Affiliation(s)
- Sébastien Putzeys
- Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional (CINVESTAV-IPN) Mérida Unit, Km. 6 Antigua carretera a Progreso, AP 73, Cordemex, 97310, Mérida, Yucatán, Mexico.
| | - Miryam Juárez-Fonseca
- Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional (CINVESTAV-IPN) Mérida Unit, Km. 6 Antigua carretera a Progreso, AP 73, Cordemex, 97310, Mérida, Yucatán, Mexico
| | - Sonia S Valencia-Agami
- Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional (CINVESTAV-IPN) Mérida Unit, Km. 6 Antigua carretera a Progreso, AP 73, Cordemex, 97310, Mérida, Yucatán, Mexico
| | - Armando Mendoza-Flores
- Centro de Investigación Científica y de Educación Superior de Ensenada (CICESE), Carretera Ensenada-Tijuana 3918, Zona Playitas, 22860, Ensenada, Baja California, Mexico
| | - Daniel Cerqueda-García
- Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional (CINVESTAV-IPN) Mérida Unit, Km. 6 Antigua carretera a Progreso, AP 73, Cordemex, 97310, Mérida, Yucatán, Mexico
| | - Ana C Aguilar-Trujillo
- Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional (CINVESTAV-IPN) Mérida Unit, Km. 6 Antigua carretera a Progreso, AP 73, Cordemex, 97310, Mérida, Yucatán, Mexico
| | - Manuel E Martínez-Cruz
- Laboratorio de Botánica Marina y Planctología, Instituto de Ciencias Marinas y Pesquerías (ICIMAP), Universidad Veracruzana, 94294, Boca del Río, Veracruz, Mexico
| | - Yuri B Okolodkov
- Laboratorio de Botánica Marina y Planctología, Instituto de Ciencias Marinas y Pesquerías (ICIMAP), Universidad Veracruzana, 94294, Boca del Río, Veracruz, Mexico
| | - Flor Arcega-Cabrera
- Unidad de Química en Sisal, Facultad de Química, Universidad Nacional Autónoma de México (UNAM), Puerto de Abrigo s/n, 97355, Sisal, Yucatán, Mexico
| | - Jorge A Herrera-Silveira
- Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional (CINVESTAV-IPN) Mérida Unit, Km. 6 Antigua carretera a Progreso, AP 73, Cordemex, 97310, Mérida, Yucatán, Mexico
| | - M Leopoldina Aguirre-Macedo
- Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional (CINVESTAV-IPN) Mérida Unit, Km. 6 Antigua carretera a Progreso, AP 73, Cordemex, 97310, Mérida, Yucatán, Mexico
| | - Daniel Pech
- Laboratorio de Biodiversidad Marina y Cambio Climático (BIOMARCCA), El Colegio de la Frontera Sur, 24500, Lerma Campeche, Campeche, Mexico
| |
Collapse
|
8
|
Hancock TL, Blonder SL, Bury AA, Smolinski RA, Parsons ML, Robertson A, Urakawa H. Succession pattern and phylotype analysis of microphytobenthic communities in a simulated oil spill seagrass mesocosm experiment. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 784:147053. [PMID: 34088039 DOI: 10.1016/j.scitotenv.2021.147053] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2020] [Revised: 04/04/2021] [Accepted: 04/06/2021] [Indexed: 06/12/2023]
Abstract
Microphytobenthic communities play a significant role in nutrient modulation, sediment stabilization, and primary production in seagrass beds, which provide various ecosystem services. We hypothesized that microphytobenthic communities in sediments of chronically oil-exposed seagrass beds will exhibit increased resiliency to stressors associated with oil exposure as opposed to seagrass beds never exposed to oil spills. We prepared 14-liter seawater mesocosms, each containing a submersed macrophyte Ruppia maritima collected from the Chandeleur Islands, Louisiana, and Estero Bay, Florida. Mesocosms were initially exposed to 50% water-accommodated oil fractions (WAF) and subsequently diluted by 50% with daily artificial seawater exchanges over 8 days to simulate tidal dilution. High-throughput amplicon sequencing based on 23S rRNA gene targeting cyanobacteria and chloroplasts of eukaryotic microphytobenthos was conducted to assess the impact of oiling on microphytobenthic communities with additional assessment via microscopy. High-throughput sequencing in combination with traditional microscopic analysis provided a robust examination in which both methods roughly complemented each other. Distinct succession patterns were detected in benthic algal communities of chronically oil-exposed (Louisiana) versus unexposed (Florida) seagrass bed sediments. The impact of oiling in microphytobenthos across all samples showed that benthic diatoms dominated all algal communities with sample percentages ranging from 42 to 97%, followed by cyanobacteria (2 to 50%). It is noteworthy that drastic changes in microphytobenthic community structure in terms of the larger taxonomic level were not observed, rather change occurred at the phylotype level. These results were also confirmed by microscopy. Similarity percentages (SIMPER) analysis identified seven phylotypes (Cyanobacteria, Bacillariophyceae, and Mediophyceae) in the Louisiana samples and one phylotype (Bacillariophyceae) in the Florida samples that increased in relative sequence abundance after oil exposure. The detailed phylotype analysis identifying sentinel microphytobenthic indicators provides a base for future research on benthic microalgae response to ecosystem disturbance.
Collapse
Affiliation(s)
- Taylor L Hancock
- Department of Marine and Ecological Sciences, Florida Gulf Coast University, Fort Myers, FL, USA; Alabama Center for Ecological Resilience (ACER), Dauphin Island, Alabama, United States; School of Geosciences, University of South Florida, Tampa, FL 33620, USA
| | - Samantha L Blonder
- Department of Marine and Ecological Sciences, Florida Gulf Coast University, Fort Myers, FL, USA; Alabama Center for Ecological Resilience (ACER), Dauphin Island, Alabama, United States
| | - Alison A Bury
- Department of Marine and Ecological Sciences, Florida Gulf Coast University, Fort Myers, FL, USA; Alabama Center for Ecological Resilience (ACER), Dauphin Island, Alabama, United States
| | - Rachel A Smolinski
- Department of Marine and Ecological Sciences, Florida Gulf Coast University, Fort Myers, FL, USA; Alabama Center for Ecological Resilience (ACER), Dauphin Island, Alabama, United States
| | - Michael L Parsons
- Department of Marine and Ecological Sciences, Florida Gulf Coast University, Fort Myers, FL, USA; Alabama Center for Ecological Resilience (ACER), Dauphin Island, Alabama, United States
| | - Alison Robertson
- Alabama Center for Ecological Resilience (ACER), Dauphin Island, Alabama, United States; Department of Marine Sciences, University of South Alabama and Dauphin Island Sea Lab, Dauphin Island, Alabama, USA
| | - Hidetoshi Urakawa
- Department of Marine and Ecological Sciences, Florida Gulf Coast University, Fort Myers, FL, USA; Alabama Center for Ecological Resilience (ACER), Dauphin Island, Alabama, United States; School of Geosciences, University of South Florida, Tampa, FL 33620, USA.
| |
Collapse
|
9
|
Kamalanathan M, Schwehr KA, Labonté JM, Taylor C, Bergen C, Patterson N, Claflin N, Santschi PH, Quigg A. The Interplay of Phototrophic and Heterotrophic Microbes Under Oil Exposure: A Microcosm Study. Front Microbiol 2021; 12:675328. [PMID: 34408728 PMCID: PMC8366316 DOI: 10.3389/fmicb.2021.675328] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Accepted: 06/28/2021] [Indexed: 11/18/2022] Open
Abstract
Microbial interactions influence nearly one-half of the global biogeochemical flux of major elements of the marine ecosystem. Despite their ecological importance, microbial interactions remain poorly understood and even less is known regarding the effects of anthropogenic perturbations on these microbial interactions. The Deepwater Horizon oil spill exposed the Gulf of Mexico to ∼4.9 million barrels of crude oil over 87 days. We determined the effects of oil exposure on microbial interactions using short- and long-term microcosm experiments with and without Macondo surrogate oil. Microbial activity determined using radiotracers revealed that oil exposure negatively affected substrate uptake by prokaryotes within 8 h and by eukaryotes over 72 h. Eukaryotic uptake of heterotrophic exopolymeric substances (EPS) was more severely affected than prokaryotic uptake of phototrophic EPS. In addition, our long-term exposure study showed severe effects on photosynthetic activity. Lastly, changes in microbial relative abundances and fewer co-occurrences among microbial species were mostly driven by photosynthetic activity, treatment (control vs. oil), and prokaryotic heterotrophic metabolism. Overall, oil exposure affected microbial co-occurrence and/or interactions possibly by direct reduction in abundance of one of the interacting community members and/or indirect by reduction in metabolism (substrate uptake or photosynthesis) of interacting members.
Collapse
Affiliation(s)
- Manoj Kamalanathan
- Department of Marine Biology, Texas A&M University at Galveston, Galveston, TX, United States
| | - Kathleen A Schwehr
- Department of Marine and Coastal Environmental Science, Texas A&M University at Galveston, Galveston, TX, United States
| | - Jessica M Labonté
- Department of Marine Biology, Texas A&M University at Galveston, Galveston, TX, United States
| | - Christian Taylor
- Department of Marine and Coastal Environmental Science, Texas A&M University at Galveston, Galveston, TX, United States
| | - Charles Bergen
- Department of Marine and Coastal Environmental Science, Texas A&M University at Galveston, Galveston, TX, United States
| | - Nicole Patterson
- Department of Marine and Coastal Environmental Science, Texas A&M University at Galveston, Galveston, TX, United States
| | - Noah Claflin
- Department of Marine Biology, Texas A&M University at Galveston, Galveston, TX, United States
| | - Peter H Santschi
- Department of Marine and Coastal Environmental Science, Texas A&M University at Galveston, Galveston, TX, United States.,Department of Oceanography, Texas A&M University, College Station, TX, United States
| | - Antonietta Quigg
- Department of Marine Biology, Texas A&M University at Galveston, Galveston, TX, United States.,Department of Oceanography, Texas A&M University, College Station, TX, United States
| |
Collapse
|
10
|
Parsons ML, Brandt AL, Turner RE, Morrison WL, Ralabais NN. Characterization of common phytoplankton on the Louisiana shelf. MARINE POLLUTION BULLETIN 2021; 168:112458. [PMID: 33993041 DOI: 10.1016/j.marpolbul.2021.112458] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Revised: 04/14/2021] [Accepted: 05/03/2021] [Indexed: 06/12/2023]
Abstract
Phytoplankton and accompanying environmental data (temperature, salinity, secchi depth, stratification, and inorganic nutrients) were analyzed from 672 surface water samples (0 to 1.5 m depth) collected from 95 stations located on the Louisiana shelf between April 1990 and August 2011. Phytoplankton were identified to the lowest practical taxonomic unit from glutaraldehyde-preserved samples using epifluorescent microscopy and reported as cells L-1. Twenty-six phytoplankton taxa (primarily diatoms) that were > 8 μm in size, identified to genus-level resolution and ranked in the top 20 in at least one of three separate categories (average abundance; frequency of occurrence; and bloom frequency) were used in subsequent analyses. Temperature, stratification, and secchi depth constituted the environmental variable combination best related to the phytoplankton community composition patterns across the 672 samples (r = 0.288; p < 0.01) according to BEST analysis (PRIMER 7). The environmental optima of the 26 taxa were calculated using the weighted-averaging algorithm in the C2 program and then used to group the taxa into common phytoplankton clusters (i.e., niches) using PRIMER 7 CLUSTER. The phytoplankton clustered into three groups: Group A (summer assemblage), Group B (winter assemblage), and Group C (spring bloom assemblage). The results demonstrate that the composition of the phytoplankton community is most related to seasonality and physical variables, whereas nutrients appear to play a larger role in driving overall phytoplankton biomass. This study provides a platform to examine phytoplankton responses to future environmental perturbations in the region.
Collapse
Affiliation(s)
- Michael L Parsons
- Coastal Watershed Institute, Florida Gulf Coast University, 10501 FGCU Blvd South, Fort Myers, FL 33965, United States of America.
| | - Ashley L Brandt
- Coastal Watershed Institute, Florida Gulf Coast University, 10501 FGCU Blvd South, Fort Myers, FL 33965, United States of America
| | - R Eugene Turner
- Department of Oceanography and Coastal Sciences, Louisiana State University, Baton Rouge, LA 70803, United States of America
| | - Wendy L Morrison
- Louisiana Universities Marine Consortium, 8124 Hwy 56, Cocodrie, LA 70344, United States of America
| | - Nancy N Ralabais
- Department of Oceanography and Coastal Sciences, Louisiana State University, Baton Rouge, LA 70803, United States of America; Louisiana Universities Marine Consortium, 8124 Hwy 56, Cocodrie, LA 70344, United States of America
| |
Collapse
|
11
|
Quigg A, Parsons M, Bargu S, Ozhan K, Daly KL, Chakraborty S, Kamalanathan M, Erdner D, Cosgrove S, Buskey EJ. Marine phytoplankton responses to oil and dispersant exposures: Knowledge gained since the Deepwater Horizon oil spill. MARINE POLLUTION BULLETIN 2021; 164:112074. [PMID: 33540275 DOI: 10.1016/j.marpolbul.2021.112074] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Revised: 10/16/2020] [Accepted: 01/15/2021] [Indexed: 06/12/2023]
Abstract
The Deepwater Horizon oil spill of 2010 brought the ecology and health of the Gulf of Mexico to the forefront of the public's and scientific community's attention. Not only did we need a better understanding of how this oil spill impacted the Gulf of Mexico ecosystem, but we also needed to apply this knowledge to help assess impacts from perturbations in the region and guide future response actions. Phytoplankton represent the base of the food web in oceanic systems. As such, alterations of the phytoplankton community propagate to upper trophic levels. This review brings together new insights into the influence of oil and dispersant on phytoplankton. We bring together laboratory, mesocosm and field experiments, including insights into novel observations of harmful algal bloom (HAB) forming species and zooplankton as well as bacteria-phytoplankton interactions. We finish by addressing knowledge gaps and highlighting key topics for research in novel areas.
Collapse
Affiliation(s)
- Antonietta Quigg
- Texas A&M University at Galveston, 200 Seawolf Parkway, Galveston, TX 77553, USA.
| | - Michael Parsons
- Florida Gulf Coast University, 10501 FGCU Blvd South, Fort Myers, FL 33965, USA.
| | - Sibel Bargu
- Louisiana State University, 1235 Energy, Coast & Environment Building, Baton Rouge, LA 70803, USA.
| | - Koray Ozhan
- Middle East Technical University, P.O. Box 28, 33731 Erdemli, Mersin, Turkey.
| | - Kendra L Daly
- University of South Florida, 140 Seventh Ave S., St. Petersburg, FL 33701, USA.
| | - Sumit Chakraborty
- Mote Marine Laboratory, 1600 Ken Thompson Parkway, Sarasota, FL 34236, USA.
| | - Manoj Kamalanathan
- Texas A&M University at Galveston, 200 Seawolf Parkway, Galveston, TX 77553, USA.
| | - Deana Erdner
- University of Texas Marine Science Institute, 750 Channel View Drive, Port Aransas, TX 78373, USA.
| | - Sarah Cosgrove
- University of Texas Marine Science Institute, 750 Channel View Drive, Port Aransas, TX 78373, USA.
| | - Edward J Buskey
- University of Texas Marine Science Institute, 750 Channel View Drive, Port Aransas, TX 78373, USA.
| |
Collapse
|
12
|
Genzer JL, Kamalanathan M, Bretherton L, Hillhouse J, Xu C, Santschi PH, Quigg A. Diatom aggregation when exposed to crude oil and chemical dispersant: Potential impacts of ocean acidification. PLoS One 2020; 15:e0235473. [PMID: 32634146 PMCID: PMC7340286 DOI: 10.1371/journal.pone.0235473] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Accepted: 06/17/2020] [Indexed: 01/14/2023] Open
Abstract
Diatoms play a key role in the marine carbon cycle with their high primary productivity and release of exudates such as extracellular polymeric substances (EPS) and transparent exopolymeric particles (TEP). These exudates contribute to aggregates (marine snow) that rapidly transport organic material to the seafloor, potentially capturing contaminants like petroleum components. Ocean acidification (OA) impacts marine organisms, especially those that utilize inorganic carbon for photosynthesis and EPS production. Here we investigated the response of the diatom Thalassiosira pseudonana grown to present day and future ocean conditions in the presence of a water accommodated fraction (WAF and OAWAF) of oil and a diluted chemically enhanced WAF (DCEWAF and OADCEWAF). T. pseudonana responded to WAF/DCEWAF but not OA and no multiplicative effect of the two factors (i.e., OA and oil/dispersant) was observed. T. pseudonana released more colloidal EPS (< 0.7 μm to > 3 kDa) in the presence of WAF/DCEWAF/OAWAF/OADCEWAF than in the corresponding Controls. Colloidal EPS and particulate EPS in the oil/dispersant treatments have higher protein-to-carbohydrate ratios than those in the control treatments, and thus are likely stickier and have a greater potential to form aggregates of marine oil snow. More TEP was produced in response to WAF than in Controls; OA did not influence its production. Polyaromatic hydrocarbon (PAH) concentrations and distributions were significantly impacted by the presence of dispersants but not OA. PAHs especially Phenanthrenes, Anthracenes, Chrysenes, Fluorenes, Fluoranthenes, Pyrenes, Dibenzothiophenes and 1-Methylphenanthrene show major variations in the aggregate and surrounding seawater fraction of oil and oil plus dispersant treatments. Studies like this add to the current knowledge of the combined effects of aggregation, marine snow formation, and the potential impacts of oil spills under ocean acidification scenarios.
Collapse
Affiliation(s)
- Jennifer L. Genzer
- Department of Marine Biology, Texas A&M University at Galveston, Galveston, Texas, United States of America
| | - Manoj Kamalanathan
- Department of Marine Biology, Texas A&M University at Galveston, Galveston, Texas, United States of America
| | - Laura Bretherton
- Department of Marine Biology, Texas A&M University at Galveston, Galveston, Texas, United States of America
- Department of Oceanography, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Jessica Hillhouse
- Department of Marine Biology, Texas A&M University at Galveston, Galveston, Texas, United States of America
| | - Chen Xu
- Department of Marine Science, Texas A&M University at Galveston, Galveston, Texas, United States of America
| | - Peter H. Santschi
- Department of Marine Science, Texas A&M University at Galveston, Galveston, Texas, United States of America
| | - Antonietta Quigg
- Department of Marine Biology, Texas A&M University at Galveston, Galveston, Texas, United States of America
| |
Collapse
|
13
|
Changes in Reef Fish Community Structure Following the Deepwater Horizon Oil Spill. Sci Rep 2020; 10:5621. [PMID: 32273520 PMCID: PMC7145834 DOI: 10.1038/s41598-020-62574-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2019] [Accepted: 03/10/2020] [Indexed: 01/21/2023] Open
Abstract
Large-scale anthropogenic disturbances can have direct and indirect effects on marine communities, with direct effects often taking the form of widespread injury or mortality and indirect effects manifesting as changes in food web structure. Here, we report a time series that captures both direct and indirect effects of the Deepwater Horizon Oil Spill (DWH) on northern Gulf of Mexico (nGoM) reef fish communities. We observed significant changes in community structure immediately following the DWH, with a 38% decline in species richness and 26% decline in Shannon-Weiner diversity. Initial shifts were driven by widespread declines across a range of trophic guilds, with subsequent recovery unevenly distributed among guilds and taxa. For example, densities of small demersal invertivores, small demersal browsers, generalist carnivores, and piscivores remained persistently low with little indication of recovery seven years after the DWH. Initial declines among these guilds occurred prior to the arrival of the now-widespread, invasive lionfish (Pterois spp.), but their lack of recovery suggests lionfish predation may be affecting recovery. Factors affecting persistently low densities of generalist carnivores and piscivores are not well understood but warrant further study given the myriad ecosystem services provided by nGoM reef fishes.
Collapse
|
14
|
Bretherton L, Hillhouse J, Kamalanathan M, Finkel ZV, Irwin AJ, Quigg A. Trait-dependent variability of the response of marine phytoplankton to oil and dispersant exposure. MARINE POLLUTION BULLETIN 2020; 153:110906. [PMID: 32056862 DOI: 10.1016/j.marpolbul.2020.110906] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Revised: 01/08/2020] [Accepted: 01/10/2020] [Indexed: 06/10/2023]
Abstract
The Deepwater Horizon oil spill released millions of barrels of crude oil into the Gulf of Mexico, and saw widespread use of the chemical dispersant Corexit. We assessed the role of traits, such as cell size, cell wall, motility, and mixotrophy on the growth and photosynthetic response of 15 phytoplankton taxa to oil and Corexit. We collected growth and photosynthetic data on five algal cultures. These responses could be separated into resistant (Tetraselmis astigmatica, Ochromonas sp., Heterocapsa pygmaea) and sensitive (Micromonas pusilla, Prorocentrum minimum). We combined this data with 10 species previously studied and found that cell size is most important in determining the biomass response to oil, whereas motility/mixotrophy is more important in the dispersed oil. Our analysis accounted for a third of the variance observed, so further work is needed to identify other factors that contribute to oil resistance.
Collapse
Affiliation(s)
- Laura Bretherton
- Department of Oceanography, Dalhousie University, Halifax, Nova Scotia, Canada.
| | - Jessica Hillhouse
- Department of Marine Biology, Texas A&M University at Galveston, Galveston, TX, USA
| | - Manoj Kamalanathan
- Department of Marine Biology, Texas A&M University at Galveston, Galveston, TX, USA
| | - Zoe V Finkel
- Department of Oceanography, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Andrew J Irwin
- Department of Mathematics, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Antonietta Quigg
- Department of Marine Biology, Texas A&M University at Galveston, Galveston, TX, USA; Department of Oceanography, Texas A&M University, College Station, TX, USA
| |
Collapse
|
15
|
Wang H, Li H, Sun K, Huang H, Zhu P, Lu Z. Impact of exogenous nitrogen on the cyanobacterial abundance and community in oil-contaminated sediment: A microcosm study. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 710:136296. [PMID: 31918192 DOI: 10.1016/j.scitotenv.2019.136296] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2019] [Revised: 12/21/2019] [Accepted: 12/21/2019] [Indexed: 06/10/2023]
Abstract
The pollution caused by oil spills is a global problem, and outbreaks of blue algae in oil-polluted areas are harmful to plankton in the ocean. The ocean is a barren environment limited by low availabilities of nitrogen and other nutrients, and further nitrogen limitation caused by oil contamination is considered one of the important factors leading to outbreaks of cyanobacteria, but the effects of nitrogen amendment in this situation are not well understood. Here, we present the results from nitrogen amendment experiments conducted in oil-contaminated microcosms. Green mats appeared on the sediment surface of each treatment group at different time points. The appearance of cyanobacterial blooms in the oil-contaminated group supplemented with nitrogen was significantly delayed compared with that in the oil-contaminated group without nitrogen addition. Moreover, oil promoted nitrogen fixation and stimulated the growth of nitrogen-fixing cyanobacteria in the oil-contaminated microcosms. Our results suggest that nitrogen limitation is a vital factor for the induction of cyanobacterial blooms in oil-contaminated environments, and the addition of nitrogen reduced the abundance of cyanobacteria by up to approximately 2.5-fold and slowed the bloom process.
Collapse
Affiliation(s)
- Haixia Wang
- MOE Laboratory of Biosystem Homeostasis and Protection, Institute of Microbiology, College of Life Sciences, Zhejiang University, Hangzhou, China
| | - Hanbo Li
- MOE Laboratory of Biosystem Homeostasis and Protection, Institute of Microbiology, College of Life Sciences, Zhejiang University, Hangzhou, China
| | - Kaikai Sun
- MOE Laboratory of Biosystem Homeostasis and Protection, Institute of Microbiology, College of Life Sciences, Zhejiang University, Hangzhou, China
| | - Hui Huang
- MOE Laboratory of Biosystem Homeostasis and Protection, Institute of Microbiology, College of Life Sciences, Zhejiang University, Hangzhou, China
| | - Panpan Zhu
- MOE Laboratory of Biosystem Homeostasis and Protection, Institute of Microbiology, College of Life Sciences, Zhejiang University, Hangzhou, China
| | - Zhenmei Lu
- MOE Laboratory of Biosystem Homeostasis and Protection, Institute of Microbiology, College of Life Sciences, Zhejiang University, Hangzhou, China.
| |
Collapse
|
16
|
Finkel ZV, Liang Y, Nanjappa D, Bretherton L, Brown CM, Quigg A, Irwin AJ. A ribosomal sequence-based oil sensitivity index for phytoplankton groups. MARINE POLLUTION BULLETIN 2020; 151:110798. [PMID: 32056593 DOI: 10.1016/j.marpolbul.2019.110798] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2019] [Revised: 11/29/2019] [Accepted: 12/02/2019] [Indexed: 06/10/2023]
Abstract
Species-level variability has made it difficult to determine the relative sensitivity of phytoplankton to oil and mixtures of oil and dispersant. Here we develop a phytoplankton group sensitivity index using ribosome sequence data that we apply to a mesocosm experiment in which a natural microbial community was exposed to oil and two oil-dispersant mixtures. The relative sensitivity of four phytoplankton taxonomic groups, diatoms, dinoflagellates, green algae, and Chrysophytes, was computed using the log of the ratio of the number of species that increase to the number that decrease in relative abundance in the treatment relative to the control. The index indicates that dinoflagellates are the most sensitive group to oil and oil-dispersant treatments while the Chrysophytes benefit under oil exposure compared to the other groups examined. The phytoplankton group sensitivity index can be generally applied to quantify and rank the relative sensitivity of diverse microbial groups to environmental conditions and pollutants.
Collapse
Affiliation(s)
- Zoe V Finkel
- Department of Oceanography, Dalhousie University, Halifax, NS, Canada.
| | - Yue Liang
- Department of Oceanography, Dalhousie University, Halifax, NS, Canada
| | - Deepak Nanjappa
- Department of Oceanography, Dalhousie University, Halifax, NS, Canada
| | - Laura Bretherton
- Department of Oceanography, Dalhousie University, Halifax, NS, Canada
| | | | | | - Andrew J Irwin
- Department of Mathematics & Statistics, Dalhousie University, Halifax, NS, Canada
| |
Collapse
|
17
|
Turner RE, Rabalais NN, Overton EB, Meyer BM, McClenachan G, Swenson EM, Besonen M, Parsons ML, Zingre J. Oiling of the continental shelf and coastal marshes over eight years after the 2010 Deepwater Horizon oil spill. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2019; 252:1367-1376. [PMID: 31254894 DOI: 10.1016/j.envpol.2019.05.134] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Revised: 05/18/2019] [Accepted: 05/26/2019] [Indexed: 06/09/2023]
Abstract
We measured the temporal and spatial trajectory of oiling from the April, 2010, Deepwater Horizon oil spill in water from Louisiana's continental shelf, the estuarine waters of Barataria Bay, and in coastal marsh sediments. The concentrations of 28 target alkanes and 43 target polycyclic aromatic hydrocarbons were determined in water samples collected on 10 offshore cruises, in 19 water samples collected monthly one km offshore at 13 inshore stations in 2010 and 2013, and in 16-60 surficial marsh sediment samples collected on each of 26 trips. The concentration of total aromatics in offshore waters peaked in late summer, 2010, at 100 times above the May, 2010 values, which were already slightly contaminated. There were no differences in surface or bottom water samples. The concentration of total aromatics declined at a rate of 73% y-1 to 1/1000th of the May 2010 values by summer 2016. The concentrations inside the estuary were proportional to those one km offshore, but were 10-30% lower. The oil concentrations in sediments were initially different at 1 and 10 m distance into the marsh, but became equal after 2 years. Thus, the distinction between oiled and unoiled sites became blurred, if not non-existent then, and oiling had spread over an area wider than was visible initially. The concentrations of oil in sediments were 100-1000 times above the May 2010 values, and dropped to 10 times higher after 8 years, thereafter, demonstrating a long-term contamination by oil or oil residues that will remain for decades. The chemical signature of the oil residues offshore compared to in the marsh reflects the more aerobic offshore conditions and water-soluble tendencies of the dissolved components, whereas the anaerobic marsh sediments will retain the heavier molecular components for a long time, and have a consequential effect on the ecosystems.
Collapse
Affiliation(s)
- R Eugene Turner
- Department of Oceanography and Coastal Sciences, Louisiana State University, Baton Rouge, LA, 70803, USA.
| | - Nancy N Rabalais
- Department of Oceanography and Coastal Sciences, Louisiana State University, Baton Rouge, LA, 70803, USA
| | - Edward B Overton
- Department of Environmental Sciences, Louisiana State University, Baton Rouge, LA, 70803, USA
| | - Buffy M Meyer
- Department of Environmental Sciences, Louisiana State University, Baton Rouge, LA, 70803, USA
| | - Giovanna McClenachan
- Department of Oceanography and Coastal Sciences, Louisiana State University, Baton Rouge, LA, 70803, USA; Presently, Department of Biology, University of Central Florida, Orlando, FL, 32816, USA
| | - Erick M Swenson
- Department of Oceanography and Coastal Sciences, Louisiana State University, Baton Rouge, LA, 70803, USA
| | - Mark Besonen
- Harte Research Institute for Gulf of Mexico Studies, Texas A&M University - Corpus Christi, Corpus Christi, TX, 78412, USA
| | - Michael L Parsons
- Coastal Watershed Institute, Florida Gulf Coast University, Fort Myers, FL, 33965, USA
| | - Jeffrey Zingre
- Coastal Watershed Institute, Florida Gulf Coast University, Fort Myers, FL, 33965, USA
| |
Collapse
|
18
|
Bretherton L, Hillhouse J, Bacosa H, Setta S, Genzer J, Kamalanathan M, Finkel ZV, Quigg A. Growth dynamics and domoic acid production of Pseudo-nitzschia sp. in response to oil and dispersant exposure. HARMFUL ALGAE 2019; 86:55-63. [PMID: 31358277 DOI: 10.1016/j.hal.2019.05.008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2019] [Revised: 05/09/2019] [Accepted: 05/13/2019] [Indexed: 06/10/2023]
Abstract
The diatom genus Pseudo-nitzschia is a common component of phytoplankton communities in the Gulf of Mexico and is potentially toxic as some species produce the potent neurotoxin domoic acid. The impact of oil and chemical dispersants on Pseudo-nitzschia spp. and domoic acid production have not yet been studied; preliminary findings from a mesocosm experiment suggest this genus may be particularly resilient. A toxicological study was conducted using a colony of Pseudo-nitzschia sp. isolated from a station off the coast of Louisiana in the Gulf of Mexico. The cultures were exposed to a water accommodated fraction (WAF) of oil and a diluted chemically enhanced WAF (DCEWAF) which was a mix of oil and dispersant (20:1). Exposure to WAF induced a lag phase but did not inhibit growth rates once in exponential growth. Cultures grown in DCEWAF did not experience a lag phase but had significantly lower growth rates than the Control and WAF cultures. The cellular quota of domoic acid was higher in cultures treated with DCEWAF and WAF relative to their control values, and half of the domoic acid had leaked out of the cells into the surrounding seawater in the DCEWAF cultures while all the domoic acid remained inside the cells in WAF-treated cultures. These results suggest that the presence of oil could lead to toxic blooms, but that the application of dispersant could decrease bioaccumulation of domoic acid through the food web.
Collapse
Affiliation(s)
- Laura Bretherton
- Department of Marine Biology, Texas A&M University at Galveston, Galveston, TX, 77554, USA.
| | - Jessica Hillhouse
- Department of Marine Biology, Texas A&M University at Galveston, Galveston, TX, 77554, USA
| | - Hernando Bacosa
- Department of Marine Biology, Texas A&M University at Galveston, Galveston, TX, 77554, USA
| | - Samantha Setta
- Department of Marine Biology, Texas A&M University at Galveston, Galveston, TX, 77554, USA
| | - Jennifer Genzer
- Department of Marine Biology, Texas A&M University at Galveston, Galveston, TX, 77554, USA
| | - Manoj Kamalanathan
- Department of Marine Biology, Texas A&M University at Galveston, Galveston, TX, 77554, USA
| | - Zoe V Finkel
- Department of Oceanography, Dalhousie University, Halifax, NS, B3H 4R2, Canada
| | - Antonietta Quigg
- Department of Marine Biology, Texas A&M University at Galveston, Galveston, TX, 77554, USA; Department of Oceanography, Texas A&M University, College Station, TX, 77843 USA
| |
Collapse
|
19
|
Suja LD, Chen X, Summers S, Paterson DM, Gutierrez T. Chemical Dispersant Enhances Microbial Exopolymer (EPS) Production and Formation of Marine Oil/Dispersant Snow in Surface Waters of the Subarctic Northeast Atlantic. Front Microbiol 2019; 10:553. [PMID: 30949150 PMCID: PMC6435573 DOI: 10.3389/fmicb.2019.00553] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2018] [Accepted: 03/04/2019] [Indexed: 12/18/2022] Open
Abstract
A notable feature of the Deepwater Horizon oil spill was the unprecedented formation of marine oil snow (MOS) that was observed in large quantities floating on the sea surface and that subsequently sedimented to the seafloor. Whilst the physical and chemical processes involved in MOS formation remain unclear, some studies have shown that extracellular polymeric substances (EPS) play a role in this process. Here, we report that during exposure of subarctic northeast Atlantic seawater to a chemical dispersant, whether in the presence/absence of crude oil, the dispersant stimulates the production of significant quantities of EPS that we posit serves as a key building block in the formation of MOS. This response is likely conferred via de novo synthesis of EPS by natural communities of bacteria. We also describe the formation of marine dispersant snow (MDS) as a product of adding chemical dispersants to seawater. Differential staining confirmed that MDS, like MOS, is composed of glycoprotein, though MDS is more protein rich. Using barcoded-amplicon Illumina MiSeq sequencing, we analyzed, for the first time, the bacterial communities associated with MDS and report that their diversity is not significantly dissimilar to those associated with MOS aggregates. Our findings emphasize the need to conduct further work on the effects of dispersants when applied to oil spills at sea, particularly at different sites, and to determine how the product of this (i.e., MOS and MDS) affects the biodegradation of the oil.
Collapse
Affiliation(s)
- Laura Duran Suja
- School of Engineering and Physical Sciences, Heriot-Watt University, Edinburgh, United Kingdom
| | - Xindi Chen
- School of Biology, Scottish Oceans Institute, University of St Andrews, St Andrews, United Kingdom.,College of Harbour, Coastal and Offshore Engineering, Hohai University, Nanjing, China
| | - Stephen Summers
- Singapore Centre for Environmental Life Sciences Engineering, Nanyang Technological University, Singapore, Singapore
| | - David M Paterson
- School of Biology, Scottish Oceans Institute, University of St Andrews, St Andrews, United Kingdom
| | - Tony Gutierrez
- School of Engineering and Physical Sciences, Heriot-Watt University, Edinburgh, United Kingdom
| |
Collapse
|
20
|
Severin T, Erdner DL. The Phytoplankton Taxon-Dependent Oil Response and Its Microbiome: Correlation but Not Causation. Front Microbiol 2019; 10:385. [PMID: 30915045 PMCID: PMC6421335 DOI: 10.3389/fmicb.2019.00385] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2018] [Accepted: 02/13/2019] [Indexed: 12/24/2022] Open
Abstract
Phytoplankton strongly interact with their associated bacteria, both attached (PA), and free-living (FL), and bacterial community structures can be specific to phytoplankton species. Similarly, responses to environmental stressors can vary by taxon, as exemplified by observed shifts in phytoplankton community structure from diatoms to phytoflagellates after the Deepwater Horizon (DWH) oil spill. Here, we assess the extent to which associated bacteria influence the phytoplankton taxon-specific oil response by exposing xenic and axenic strains of three phytoplankton species to oil and/or dispersant. The dinoflagellates Amphidinium carterae and Peridinium sociale, and the diatom Skeletonema sp., all harbored significantly distinct bacterial communities that reflected their host oil response. Oil degrading bacteria were detected in both PA and FL communities of the oil resistant dinoflagellates, but their FL bacteria were more efficient in lipid hydrolysis, a proxy for oil degradation capability. Inversely, the growth rate and photosynthetic parameters of the diatom Skeletonema sp. was the most impacted by dispersed oil compared to the dinoflagellates, and oil-degrading bacteria were not significantly associated to its microbiome, even in the dispersed oil treatment. Moreover, the FL bacteria of Skeletonema did not show significant oil degradation. Yet, the lack of consistent significant differences in growth or photosynthetic parameters between the xenic and axenic cultures after oil exposure suggest that, physiologically, the associated bacteria do not modify the phytoplankton oil response. Instead, both oil resistance and phycosphere composition appear to be species-specific characteristics that are not causally linked. This study explores one aspect of what is undoubtedly a complex suite of interactions between phytoplankton and their associated bacteria; future analyses would benefit from studies of genes and metabolites that mediate algal-bacterial exchanges.
Collapse
Affiliation(s)
- Tatiana Severin
- Marine Science Institute, The University of Texas at Austin, Port Aransas, TX, United States
| | - Deana L Erdner
- Marine Science Institute, The University of Texas at Austin, Port Aransas, TX, United States
| |
Collapse
|
21
|
Bretherton L, Kamalanathan M, Genzer J, Hillhouse J, Setta S, Liang Y, Brown CM, Xu C, Sweet J, Passow U, Finkel ZV, Irwin AJ, Santschi PH, Quigg A. Response of natural phytoplankton communities exposed to crude oil and chemical dispersants during a mesocosm experiment. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2019; 206:43-53. [PMID: 30448744 DOI: 10.1016/j.aquatox.2018.11.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2018] [Revised: 10/31/2018] [Accepted: 11/05/2018] [Indexed: 05/20/2023]
Abstract
During the 2010 Deepwater Horizon oil spill, the chemical dispersant Corexit was applied over vast areas of the Gulf of Mexico. Marine phytoplankton play a key role in aggregate formation through the production of extracellular polymeric materials (EPS), an important step in the biological carbon pump. This study examined the impacts of oil and dispersants on the composition and physiology of natural marine phytoplankton communities from the Gulf of Mexico during a 72-hour mesocosm experiment and consequences to carbon export. The communities were treated using the water accommodated fraction (WAF) of oil, which was produced by adding Macondo surrogate oil to natural seawater and mixed for 24 h in the dark. A chemically enhanced WAF (CEWAF) was made in a similar manner, but using a mixture of oil and the dispersant Corexit in a 20:1 ratio as well as a diluted CEWAF (DCEWAF). Phytoplankton communities exposed to WAF showed no significant changes in PSII quantum yield (Fv/Fm) or electron transfer rates (ETRmax) compared to Control communities. In contrast, both Fv/Fm and ETRmax declined rapidly in communities treated with either CEWAF or DCEWAF. Analysis of other photophysiological parameters showed that photosystem II (PSII) antenna size and PSII connectivity factor were not altered by exposure to DCEWAF, suggesting that processes downstream of PSII were affected. The eukaryote community composition in each experimental tank was characterized at the end of the 72 h exposure time using 18S rRNA sequencing. Diatoms dominated the communities in both the control and WAF treatments (52 and 56% relative abundance respectively), while in CEWAF and DCEWAF treatments were dominated by heterotrophic Euglenozoa (51 and 84% respectively). Diatoms made up the largest relative contribution to the autotrophic eukaryote community in all treatments. EPS concentration was four times higher in CEWAF tanks compared to other treatments. Changes in particle size distributions (a proxy for aggregates) over time indicated that a higher degree of particle aggregation occurred in both the CEWAF and DCEWAF treatments than the WAF or Controls. Our results demonstrate that chemically dispersed oil has more negative impacts on photophysiology, phytoplankton community structure and aggregation dynamics than oil alone, with potential implications for export processes that affect the distribution and turnover of carbon and oil in the water column.
Collapse
Affiliation(s)
- Laura Bretherton
- Department of Marine Biology, Texas A&M University at Galveston, Galveston, Texas, United States.
| | - Manoj Kamalanathan
- Department of Marine Biology, Texas A&M University at Galveston, Galveston, Texas, United States
| | - Jennifer Genzer
- Department of Marine Biology, Texas A&M University at Galveston, Galveston, Texas, United States
| | - Jessica Hillhouse
- Department of Marine Biology, Texas A&M University at Galveston, Galveston, Texas, United States
| | - Samantha Setta
- Department of Marine Biology, Texas A&M University at Galveston, Galveston, Texas, United States
| | - Yue Liang
- Environmental Science Department, Mount Allison University, Sackville, New Brunswick, Canada
| | - Chris M Brown
- Environmental Science Department, Mount Allison University, Sackville, New Brunswick, Canada
| | - Chen Xu
- Department of Marine Science, Texas A&M University at Galveston, Galveston, Texas, United States
| | - Julia Sweet
- Marine Science Institute, University of California Santa Barbara, Santa Barbara, California, United States
| | - Uta Passow
- Marine Science Institute, University of California Santa Barbara, Santa Barbara, California, United States
| | - Zoe V Finkel
- Environmental Science Department, Mount Allison University, Sackville, New Brunswick, Canada
| | - Andrew J Irwin
- Mathematics and Computer Science Department, Mount Allison University, Sackville, New Brunswick, Canada
| | - Peter H Santschi
- Department of Marine Science, Texas A&M University at Galveston, Galveston, Texas, United States; Department of Oceanography, Texas A&M University, College Station, Texas, United States
| | - Antonietta Quigg
- Department of Marine Biology, Texas A&M University at Galveston, Galveston, Texas, United States; Department of Oceanography, Texas A&M University, College Station, Texas, United States
| |
Collapse
|
22
|
Baustian MM, Bargu S, Morrison W, Sexton C, Rabalais NN. The polychaete, Paraprionospio pinnata, is a likely vector of domoic acid to the benthic food web in the northern Gulf of Mexico. HARMFUL ALGAE 2018; 79:44-49. [PMID: 30420014 DOI: 10.1016/j.hal.2018.06.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Revised: 06/04/2018] [Accepted: 06/04/2018] [Indexed: 06/09/2023]
Abstract
A somewhat disparate, yet temporally cohesive, set of phytoplankton abundance, microphytobenthos, including the diatom Pseudo-nitzschia, benthic infauna, and sediment toxin data were used to develop a theory for the transfer of domoic acid (DA) from the toxic diatom to the benthos in the highly productive waters of the northern Gulf of Mexico near the Mississippi River plume. Archived samples and new data were used to test the theory that DA is likely to be incorporated into benthic consumers. High spring abundances of potentially toxic Pseudo-nitzschia diatoms were simultaneously present in the surface waters, bottom waters and on the seafloor. Examination of the gut contents of a typical deposit-feeding and suspension-feeding polychaete, Paraprionospio pinnata, during similar periods of high Pseudo-nitzschia abundance in surface water indicated consumption of the diatoms. Demersal fishes, particularly Atlantic croaker, are known to consume these polychaetes, with a potential for transfer of DA to even higher trophic levels. These findings warrant a theory to be tested with further studies about the trophic linkage of a phytoplankton toxin into the benthic food web.
Collapse
Affiliation(s)
- Melissa M Baustian
- The Water Institute of the Gulf, 1110 River Road South, Suite 200, Baton Rouge, LA, 70802, USA.
| | - Sibel Bargu
- Department of Oceanography and Coastal Sciences, Louisiana State University, Baton Rouge, LA, 70803, USA
| | - Wendy Morrison
- Louisiana Universities Marine Consortium, 8124 Highway 56, Chauvin, Louisiana, 70344, USA
| | - Chelsea Sexton
- Odum School of Ecology, University of Georgia, Athens, Georgia, 30602, USA
| | - Nancy N Rabalais
- Department of Oceanography and Coastal Sciences, Louisiana State University, Baton Rouge, LA, 70803, USA; Louisiana Universities Marine Consortium, 8124 Highway 56, Chauvin, Louisiana, 70344, USA
| |
Collapse
|
23
|
Zhang M, Wang X, Tao J, Li S, Hao S, Zhu X, Hong Y. PAHs would alter cyanobacterial blooms by affecting the microcystin production and physiological characteristics of Microcystis aeruginosa. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2018; 157:134-142. [PMID: 29621704 DOI: 10.1016/j.ecoenv.2018.03.052] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/2017] [Revised: 03/13/2018] [Accepted: 03/23/2018] [Indexed: 06/08/2023]
Abstract
The wide presence of polycyclic aromatic hydrocarbons (PAHs) in lakes necessitates a better understanding of cyanobacteria metabolites under the contamination of PAHs. The M. aeruginosa strain PCC7806 was selected to investigate the effects of naphthalene and pyrene on the physiological and biochemical reactions of cyanobacteria, including antioxidant defense system (superoxide dismutase, catalase), intracellular microcystin (MC) content, phycobiliprotein (phycocyanin, allophycocyanin) contents, and specific growth rate. Naphthalene and pyrene altered the growth of the M. aeruginosa strain, reduced the contents of phycocyanin and allophycocyanin, and stimulated the activities of antioxidant enzymes without lipid peroxidation. Remarkably, the intracellular MC content was significantly increased by 68.1% upon exposure of M. aeruginosa to 0.45 mg L-1 naphthalene, and increased by 51.5% and 77.9% upon exposure of M. aeruginosa to 0.45 mg L-1 pyrene and 1.35 mg L-1 pyrene, respectively (P<0.05). Moreover, significant correlations were observed between these physiological reactions, referring that a series of physiological and biochemical reactions in M. aeruginosa worked together against the PAH contamination. Considering that MCs are the most studied cyanobacterial toxins, our results clarified that the promoting MC production by PAH contamination cannot be neglected when making related risk assessments of eutrophic waters.
Collapse
Affiliation(s)
- Min Zhang
- State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, 73 East Beijing Road, Nanjing 210008, PR China
| | - Xiucui Wang
- College of Environmental Science and Engineering, Ministry of Education Key Laboratory of Marine Environment and Ecology, Ocean University of China, Qingdao 266100 PR China
| | - Jiayu Tao
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Shuang Li
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Shupeng Hao
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Xuezhu Zhu
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, PR China.
| | - Yajun Hong
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, P.R. China
| |
Collapse
|
24
|
Xie C, Sun K, Zhang K, Sun Y, Lu Z. Cyanobacterial blooms in oil-contaminated subtidal sediments revealed by integrated approaches. ENVIRONMENTAL MICROBIOLOGY REPORTS 2018; 10:444-452. [PMID: 30022608 DOI: 10.1111/1758-2229.12660] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2018] [Accepted: 05/08/2018] [Indexed: 06/08/2023]
Abstract
Cyanobacteria are important primary producers on the surface of oceans and are susceptible to oil spills. However, their tolerance to oil and their roles in the bioremediation of crude oil remain elusive. We analysed the response of microbial communities to a simulated oil spill in estuarine sediment microcosms under a series of oil concentrations (0, 25, 125, and 250 g kg-1 dry wt.). Cyanobacterial blooms only occurred on the sediment surface in the low oil (LO, 25 g kg-1 dry wt.) group, and cyanobacteria grew from very small amounts to enriched levels according to an internal mechanism. The dominant phylotypes enriched in the oil-contaminated sediments on day 35 were Leptolyngbya, Oscillatoria, Arthrospira (Spirulina), Geitlerinema and Cyanothece, and the majority were capable of fixing nitrogen. Gammaproteobacterial blooms occurred during the early stage, and Oceanospirillales dominated the sediment surface. The annotation of unassembled metatranscriptomic data revealed an increase in nitrogen metabolism, particularly photosynthesis (antenna proteins) during the later stage, together with depletion of fatty acid metabolism. In summary, high concentrations of crude oil are toxic to cyanobacteria but can facilitate the emergence of cyanobacterial aggregation at low concentrations (crude oil concentration < 25 g kg-1 dry wt.).
Collapse
Affiliation(s)
- Cuixiao Xie
- College of Life Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Kaikai Sun
- College of Life Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Kai Zhang
- Department of Earth Science, Zhejiang University, Hangzhou, 310027, China
| | - Yongge Sun
- Department of Earth Science, Zhejiang University, Hangzhou, 310027, China
| | - Zhenmei Lu
- College of Life Sciences, Zhejiang University, Hangzhou, 310058, China
| |
Collapse
|
25
|
Bretherton L, Williams A, Genzer J, Hillhouse J, Kamalanathan M, Finkel ZV, Quigg A. Physiological response of 10 phytoplankton species exposed to macondo oil and the dispersant, Corexit. JOURNAL OF PHYCOLOGY 2018; 54:317-328. [PMID: 29464721 DOI: 10.1111/jpy.12625] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2017] [Accepted: 02/07/2018] [Indexed: 06/08/2023]
Abstract
Culture experiments were conducted on ten phytoplankton species to examine their biological and physiological responses during exposure to oil and a combination of oil and dispersant. The species tested included a range of taxa typically found in the Gulf of Mexico such as cyanobacteria, chlorophytes, and diatoms. Cultures were exposed to Macondo surrogate oil using the water accommodated fraction (WAF), and dispersed oil using a chemically enhanced WAF (CEWAF) and diluted CEWAF, to replicate conditions following the Deepwater Horizon spill in the Gulf of Mexico. A range of responses were observed, that could broadly class the algae as either "robust" or "sensitive" to oil and/or dispersant exposure. Robust algae were identified as Synechococcus elongatus, Dunaliella tertiolecta, two pennate diatoms Phaeodactylum tricornutum and Navicula sp., and Skeletonema grethae CCMP775, and were largely unaffected by any of the treatments (no changes to growth rate or time spent in lag phase relative to controls). The rest of the phytoplankton, all centric diatoms, exhibited at least some combination of reduced growth rates or increased lag time in response to oil and/or dispersant exposure. Photophysiology did not have a strong treatment effect, with significant inhibition of photosynthetic efficiency (Fv /Fm ) only observed in the CEWAF, if at all. We found that the effects of oil and dispersants on phytoplankton physiology were species-dependent, and not always detrimental. This has significant implications on how oil spills might impact phytoplankton community structure and bloom dynamics in the Gulf of Mexico, which in turn impacts higher trophic levels.
Collapse
Affiliation(s)
- Laura Bretherton
- Department of Marine Biology, Texas A&M University at Galveston, Galveston, Texas, 77553, USA
| | - Alicia Williams
- Department of Marine Sciences, University of New England, Biddeford, Maine, 04005, USA
| | - Jennifer Genzer
- Department of Marine Biology, Texas A&M University at Galveston, Galveston, Texas, 77553, USA
| | - Jessica Hillhouse
- Department of Marine Biology, Texas A&M University at Galveston, Galveston, Texas, 77553, USA
| | - Manoj Kamalanathan
- Department of Marine Biology, Texas A&M University at Galveston, Galveston, Texas, 77553, USA
| | - Zoe V Finkel
- Environmental Science, Mount Allison University, Sackville, New Brunswick, Canada, E4L 1E4
| | - Antonietta Quigg
- Department of Marine Biology, Texas A&M University at Galveston, Galveston, Texas, 77553, USA
- Department of Oceanography, Texas A&M University, College Station, Texas, 77843, USA
| |
Collapse
|
26
|
Yu X, Yang P, Moloney MG, Wang L, Xu J, Wang Y, Liu L, Pan Y. Electrospun Gelatin Membrane Cross-Linked by a Bis(diarylcarbene) for Oil/Water Separation: A New Strategy To Prepare Porous Organic Polymers. ACS OMEGA 2018; 3:3928-3935. [PMID: 31458631 PMCID: PMC6641256 DOI: 10.1021/acsomega.8b00162] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2018] [Accepted: 03/28/2018] [Indexed: 05/21/2023]
Abstract
Porous organic polymers (POPs) as absorbing materials have attracted increasing attention. Here, we report a new approach to prepare these polymers for selective oil absorption from oil/water mixtures. Perfluoroalkylbis(diaryldiazomethane) was synthesized and used to modify the surface of an electrospun gelatin membrane by a carbene insertion reaction, not only to immobilize the porous network morphology by cross-linking but also to introduce perfluoroalkyl groups for oil/water separation. The membrane was characterized to show its surface and bulk properties, as well as its performance for absorption capacity, selectivity, and renewability. This approach offers a new horizon in the preparation of POPs for oil/water separation.
Collapse
Affiliation(s)
- Xi Yu
- School
of Chemistry and Pharmaceutical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, PR China
| | - Pengfei Yang
- School
of Chemistry and Pharmaceutical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, PR China
- E-mail: (P.Y.)
| | - Mark G. Moloney
- Chemistry
Research Laboratory, Department of Chemistry, University of Oxford, Oxford OX1 3TA, U.K.
| | - Liang Wang
- College
of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao 266109, PR China
| | - Jinku Xu
- School
of Chemistry and Pharmaceutical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, PR China
| | - Yongqing Wang
- School
of Chemistry and Pharmaceutical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, PR China
| | - Lian Liu
- School
of Chemistry and Pharmaceutical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, PR China
| | - Yunlin Pan
- School
of Chemistry and Pharmaceutical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, PR China
| |
Collapse
|
27
|
Smeltz M, Rowland-Faux L, Ghiran C, Patterson WF, Garner SB, Beers A, Mièvre Q, Kane AS, James MO. A multi-year study of hepatic biomarkers in coastal fishes from the Gulf of Mexico after the Deepwater Horizon Oil Spill. MARINE ENVIRONMENTAL RESEARCH 2017; 129:57-67. [PMID: 28487163 DOI: 10.1016/j.marenvres.2017.04.015] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2017] [Revised: 04/21/2017] [Accepted: 04/27/2017] [Indexed: 06/07/2023]
Abstract
Following the 2010 Gulf of Mexico oil spill, concerns were raised regarding exposure of fish to crude oil components, particularly polycyclic aromatic hydrocarbons (PAHs). This three year study examined hepatic enzymes in post-mitochondrial supernatant fractions from red snapper (Lutjanus campechanus) and gray triggerfish (Balistes capriscus) collected in the north central Gulf of Mexico between 2011 and 2014. Biomarker activities evaluated included benzo(a)pyrene hydroxylase (AHH), ethoxyresorufin O-deethylase (EROD), glutathione transferase (GST), and glutathione peroxidase (GPx). Mean EROD activity was higher in gray triggerfish (12.97 ± 7.15 pmol/min/mg protein [mean ± SD], n = 115) than red snapper (2.75 ± 1.92 pmol/min/mg protein, n = 194), p < 0.0001. In both species, EROD declined over time between 2011 and 2014. Declines in GST and GPx activities were also noted over this time period for both species. Gray triggerfish liver was fatty, and heptane extracts of the liver fat contained fluorescent substances with properties similar to known PAHs, however the origin of these PAHs is unknown.
Collapse
Affiliation(s)
- Marci Smeltz
- Department of Medicinal Chemistry, University of Florida, Gainesville, FL, USA
| | - Laura Rowland-Faux
- Department of Medicinal Chemistry, University of Florida, Gainesville, FL, USA
| | - Céline Ghiran
- Department of Medicinal Chemistry, University of Florida, Gainesville, FL, USA
| | - William F Patterson
- Department of Fisheries and Aquatic Sciences, University of Florida, Gainesville, FL, USA
| | - Steven B Garner
- Department of Fisheries and Aquatic Sciences, University of Florida, Gainesville, FL, USA
| | - Alan Beers
- Department of Medicinal Chemistry, University of Florida, Gainesville, FL, USA
| | - Quentin Mièvre
- Department of Medicinal Chemistry, University of Florida, Gainesville, FL, USA
| | - Andrew S Kane
- Department of Environmental and Global Health, University of Florida, Gainesville, FL, USA
| | - Margaret O James
- Department of Medicinal Chemistry, University of Florida, Gainesville, FL, USA.
| |
Collapse
|
28
|
Thompson H, Angelova A, Bowler B, Jones M, Gutierrez T. Enhanced crude oil biodegradative potential of natural phytoplankton-associated hydrocarbonoclastic bacteria. Environ Microbiol 2017; 19:2843-2861. [DOI: 10.1111/1462-2920.13811] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2017] [Revised: 05/22/2017] [Accepted: 05/30/2017] [Indexed: 11/26/2022]
Affiliation(s)
- Haydn Thompson
- School of Engineering and Physical Sciences; Heriot-Watt University; Edinburgh UK
| | - Angelina Angelova
- School of Engineering and Physical Sciences; Heriot-Watt University; Edinburgh UK
| | - Bernard Bowler
- School of Civil Engineering and Geosciences; University of Newcastle; Newcastle Upon Tyne UK
| | - Martin Jones
- School of Civil Engineering and Geosciences; University of Newcastle; Newcastle Upon Tyne UK
| | - Tony Gutierrez
- School of Engineering and Physical Sciences; Heriot-Watt University; Edinburgh UK
| |
Collapse
|
29
|
Sun Y, Lu S, Zhao X, Ding A, Wang L. Long-Term Oil Pollution and In Situ Microbial Response of Groundwater in Northwest China. ARCHIVES OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2017; 72:519-529. [PMID: 28466253 DOI: 10.1007/s00244-017-0405-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2017] [Accepted: 04/12/2017] [Indexed: 06/07/2023]
Abstract
Potential threats exist where groundwater is polluted by high concentrations of oil compounds (980.20 mg L-1 the highest TPHs). An abandoned petrochemical plant in Lanzhou City, where long-term petrochemical products leakage contaminated the groundwater, was used as a field site in this study. To determine the extent of pollution and find an effective solution, chemical techniques combined with molecular biological techniques were used to survey the migration and decomposition of pollutants. Moreover, Illumina Sequencing was employed to reveal the microbial changes of different sites. Light-chain alkanes (mostly C6-C9), most benzene compounds, and some polycyclic aromatic hydrocarbons (naphthalene, 2-methylnaphthalene) mainly polluted the source. C29 to C36 and chlorobenzenes (hexachlorocyclohexane) polluted the secondary polluted sites. Moreover, chloralkane (trichloroethane and dichloroethane), benzene derivatives (trimethylbenzene and butylbenzene), and PAHs (fluorene and phenanthrene) were present in the other longtime-contaminated water. The bacterial genera are closely related with the chemical matters, and different groups of microorganisms gather in the sample sites that are polluted with different kinds of oil. The biodiversity and abundance of observed species change with pollution conditions. The dominant phyla (81%) of the bacterial community structure are Proteobacteria (62.2% of the total microbes), Bacteroidetes (8.85%), Actinobacteria (6.70%), and Choloroflexi (3.03%). Pseudomonadaceae is significant in the oil-polluted source and Comamonadaceae is significant in the secondary polluted (migrated oil) sample; these two genera are natural decomposers of refractory matters. Amycolatopsis, Rhodocyclaceae, Sulfurimonas, and Sulfuricurvum are the dominant genera in the long-migrated oil-polluted samples. Bioavailability of the oil-contaminated place differs with levels of pollution and cleaning the worse-polluted sites by microbes is more difficult.
Collapse
Affiliation(s)
- Yujiao Sun
- College of Water Sciences, Beijing Normal University, No 19 Xinwai Street, Beijing, 100875, China.
| | - Sidan Lu
- College of Water Sciences, Beijing Normal University, No 19 Xinwai Street, Beijing, 100875, China
| | - Xiaohui Zhao
- College of Water Sciences, Beijing Normal University, No 19 Xinwai Street, Beijing, 100875, China
| | - Aizhong Ding
- College of Water Sciences, Beijing Normal University, No 19 Xinwai Street, Beijing, 100875, China
| | - Lei Wang
- College of Water Sciences, Beijing Normal University, No 19 Xinwai Street, Beijing, 100875, China
| |
Collapse
|