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Siddique A, Al Disi Z, AlGhouti M, Zouari N. Diversity of hydrocarbon-degrading bacteria in mangroves rhizosphere as an indicator of oil-pollution bioremediation in mangrove forests. MARINE POLLUTION BULLETIN 2024; 205:116620. [PMID: 38955089 DOI: 10.1016/j.marpolbul.2024.116620] [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: 03/20/2024] [Revised: 06/05/2024] [Accepted: 06/16/2024] [Indexed: 07/04/2024]
Abstract
Mangrove ecosystems, characterized by high levels of productivity, are susceptible to anthropogenic activities, notably oil pollution arising from diverse origins including spills, transportation, and industrial effluents. Owing to their role in climate regulation and economic significance, there is a growing interest in developing mangrove conservation strategies. In the Arabian Gulf, mangroves stand as the sole naturally occurring green vegetation due to the region's hot and arid climate. However, they have faced persistent oil pollution for decades. This review focuses on global mangrove distribution, with a specific emphasis on Qatar's mangroves. It highlights the ongoing challenges faced by mangroves, particularly in relation to the oil industry, and the impact of oil pollution on these vital ecosystems. It outlines major oil spill incidents worldwide and the diverse hydrocarbon-degrading bacterial communities within polluted areas, elucidating their potential for bioremediation. The use of symbiotic interactions between mangrove plants and bacteria offers a more sustainable, cost-effective and environmentally friendly alternative. However, the success of these bioremediation strategies depends on a deep understanding of the dynamics of bacterial communities, environmental factors and specific nature of the pollutants.
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Affiliation(s)
- Afrah Siddique
- Environmental Sciences Program, Department of Biological and Environmental Sciences, College of Arts and Sciences, Qatar University, P.O.B 2713, Doha, Qatar
| | - Zulfa Al Disi
- Environmental Sciences Program, Department of Biological and Environmental Sciences, College of Arts and Sciences, Qatar University, P.O.B 2713, Doha, Qatar; Environmental Science Centre, Qatar University, P.O. Box 2713, Doha, Qatar
| | - Mohammad AlGhouti
- Environmental Sciences Program, Department of Biological and Environmental Sciences, College of Arts and Sciences, Qatar University, P.O.B 2713, Doha, Qatar
| | - Nabil Zouari
- Environmental Sciences Program, Department of Biological and Environmental Sciences, College of Arts and Sciences, Qatar University, P.O.B 2713, Doha, Qatar.
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D'Almeida AP, de Albuquerque TL, Rocha MVP. Recent advances in Emulsan production, purification, and application: Exploring bioemulsifiers unique potentials. Int J Biol Macromol 2024:133672. [PMID: 38971276 DOI: 10.1016/j.ijbiomac.2024.133672] [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: 04/29/2024] [Accepted: 07/02/2024] [Indexed: 07/08/2024]
Abstract
Bioemulsifiers are compounds produced by microorganisms that reduce the interfacial forces between hydrophobic substances and water. Due to their potential in the pharmaceutical and food industries and their efficiency in oil spill remediation, they have been the subject of study in the scientific community while being safe, biodegradable, and sustainable compared to synthetic options. These biomolecules have high molecular weight and polymeric structures, distinguishing them from traditional biosurfactants. Emulsan, a bioemulsifier exopolysaccharide, is produced by Acinetobacter strains and is highly efficient in forming stable emulsions. Its low toxicity and high potential as an emulsifying agent promote its application in pharmaceutical and food industries as a drug-delivery vehicle and emulsion stabilizer. Due to the high environmental impact of oil spills, bioemulsifiers have great potential for environmental applications, such as bioremediation. This unique feature gives them a distinct mechanism of action in forming emulsions, resulting in minimal environmental impact. A better understanding of these aspects can improve the use of bioemulsifiers and environmental remediation in various industries. This review will discuss the production and characterization of Emulsan, focusing on recent advancements in cultivation conditions, purification techniques, compound identification, and ecotoxicity.
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D'Almeida AP, de Azevedo DCS, Melo VMM, de Albuquerque TL, Rocha MVP. Bioemulsifier production by Acinetobacter venetianus AMO1502: Potential for bioremediation and environmentally friendly applications. MARINE POLLUTION BULLETIN 2024; 203:116436. [PMID: 38762935 DOI: 10.1016/j.marpolbul.2024.116436] [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: 01/26/2024] [Revised: 04/26/2024] [Accepted: 04/27/2024] [Indexed: 05/21/2024]
Abstract
At the best conditions of the bioprocess (30 °C, pH 7.0, 3.0 g/L NaCl) were obtained 0.66 g/L cell concentration, 3.3 g/L of bioemulsifier, which showed high emulsifying activity (53 % ± 2), reducing the surface tension of the water in 47.2 % (38 mN/m). The polymeric structure of the purified bioemulsifier comprised a carbohydrate backbone composed of hexose-based amino sugars with a monomeric mass of 1099 Da, structurally similar to emulsan. A. venetianus bioemulsifier is non-phytotoxic (GI% > 80 %) against Ocimum basilicum and Brassica oleracea and non-cytotoxic (LC50 5794 mg/L) against Artemia salina, being safe local organisms in comparison to other less eco-friendly synthetic emulsifiers. This bioemulsifier effectively dispersed spilled oil in vitro (C22-C33), reducing oil mass by 12 % (w/w) and dispersing oil in a displacement area of 75 cm2 (23.8 % of the spilled area). Thus, the isolated A. venetianus AMO1502 produced a bioemulsifier potentially applicable for environmentally friendly oil spill remediation.
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Rodrigues FH, de Souza Filho CR, Scafutto RDM, Lassalle G. Unraveling the spectral and biochemical response of mangroves to oil spills and biotic stressors. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 348:123832. [PMID: 38537795 DOI: 10.1016/j.envpol.2024.123832] [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: 09/29/2023] [Revised: 03/14/2024] [Accepted: 03/18/2024] [Indexed: 04/09/2024]
Abstract
Mangroves are prone to biotic and abiotic stressors of natural and anthropogenic origin, of which oil pollution is one of the most harmful. Yet the response of mangrove species to acute and chronic oil exposure, as well as to other stressors, remains barely documented. In this study, a non-destructive, non-invasive approach based on field spectroscopy is proposed to unravel these responses. The approach relies on tracking alterations in foliar traits (pigments, sugars, phenols, and specific leaf area) from reflectance data in the 400-2400 nm spectral range. Three mangrove species hit by two of the most notorious oil spills in Brazilian history (1983 and 2019) and various biotic stressors, including grazing, parasitism, and fungal disease, were investigated through field spectroscopy and machine learning. This study reveals strong intra- and interspecific variability of mangrove's spectral and biochemical responses to oil pollution. Trees undergoing acute exposure to oil showed stronger alterations of foliar traits than the chronically exposed ones. Alterations induced by biotic stressors such as parasitism, disease, and grazing were successfully discriminated from those of oil for all species based on Linear Discriminant Analysis (Overall Accuracy ≥76.40% and Kappa ≥0.70). Leaf chlorophyll, phenol, and starch contents were identified as the most relevant traits in stressor discrimination. The study highlights that oil spills affect mangroves uniquely, both acutely and chronically, threatening their global conservation.
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Affiliation(s)
| | | | | | - Guillaume Lassalle
- Geosciences Institute, University of Campinas, PO Box 6152, 13083-855, Campinas, SP, Brazil
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5
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Szafranski GT, Granek EF. Contamination in mangrove ecosystems: A synthesis of literature reviews across multiple contaminant categories. MARINE POLLUTION BULLETIN 2023; 196:115595. [PMID: 37852064 DOI: 10.1016/j.marpolbul.2023.115595] [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: 08/16/2023] [Revised: 09/17/2023] [Accepted: 09/24/2023] [Indexed: 10/20/2023]
Abstract
Mangrove forests are exposed to diverse ocean-sourced and land-based contaminants, yet mangrove contamination research lags. We synthesize existing data and identify major gaps in research on five classes of mangrove contaminants: trace metals, persistent organic pollutants, polycyclic aromatic hydrocarbons, microplastics, and pharmaceuticals and personal care products. Research is concentrated in Asia, neglected in Africa and the Americas; higher concentrations are correlated with waste water treatment plants, industry, and urbanized landscapes. Trace metals and polycyclic aromatic hydrocarbons, frequently at concentrations below regulatory thresholds, may bioconcentrate in fauna, whereas persistent organic pollutants were at levels potentially harmful to biota through short- or long-term exposure. Microplastics were at variable levels, yet lack regulatory and ecotoxicological thresholds. Pharmaceuticals and personal care products received minimal research despite biological activity at small concentrations. Given potential synergistic effects, multi-contaminant research, increased monitoring of multiple contaminant classes, and increased public outreach and involvement are needed.
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Affiliation(s)
- Geoffrey T Szafranski
- Environmental Science & Management, Portland State University, Portland, OR, United States of America
| | - Elise F Granek
- Environmental Science & Management, Portland State University, Portland, OR, United States of America.
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6
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Dai X, Lv J, Fu P, Guo S. Microbial remediation of oil-contaminated shorelines: a review. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:93491-93518. [PMID: 37572250 DOI: 10.1007/s11356-023-29151-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Accepted: 07/31/2023] [Indexed: 08/14/2023]
Abstract
Frequent marine oil spills have led to increasingly serious oil pollution along shorelines. Microbial remediation has become a research hotspot of intertidal oil pollution remediation because of its high efficiency, low cost, environmental friendliness, and simple operation. Many microorganisms are able to convert oil pollutants into non-toxic substances through their growth and metabolism. Microorganisms use enzymes' catalytic activities to degrade oil pollutants. However, microbial remediation efficiency is affected by the properties of the oil pollutants, microbial community, and environmental conditions. Feasible field microbial remediation technologies for oil spill pollution in the shorelines mainly include the addition of high-efficiency oil degrading bacteria (immobilized bacteria), nutrients, biosurfactants, and enzymes. Limitations to the field application of microbial remediation technology mainly include slow start-up, rapid failure, long remediation time, and uncontrolled environmental impact. Improving the environmental adaptability of microbial remediation technology and developing sustainable microbial remediation technology will be the focus of future research. The feasibility of microbial remediation techniques should also be evaluated comprehensively.
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Affiliation(s)
- Xiaoli Dai
- Beijing Key Laboratory of Remediation of Industrial Pollution Sites, Institute of Resources and Environment, Beijing Academy of Science and Technology, Beijing, 10089, China.
| | - Jing Lv
- China University of Petroleum-Beijing, Beijing, 102249, China
| | - Pengcheng Fu
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Hainan, 570228, China
| | - Shaohui Guo
- China University of Petroleum-Beijing, Beijing, 102249, China
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7
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Lassalle G, Scafutto RDM, Lourenço RA, Mazzafera P, de Souza Filho CR. Remote sensing reveals unprecedented sublethal impacts of a 40-year-old oil spill on mangroves. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023:121859. [PMID: 37236581 DOI: 10.1016/j.envpol.2023.121859] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Revised: 04/21/2023] [Accepted: 05/19/2023] [Indexed: 05/28/2023]
Abstract
Oil spills cause long-lasting mangrove loss, threatening their conservation and ecosystem services worldwide. Oil spills impact mangrove forests at various spatial and temporal scales. Yet, their long-term sublethal effects on trees remain poorly documented. Here, we explore these effects based on one of the largest oil spills ever recorded, the Baixada Santista pipeline leak, which hit the mangroves of the Brazilian southeastern coast in 1983. Historical, Landsat-derived normalized difference vegetation index (NDVI) maps over the spilled mangrove reveal a large dieback of trees within a year following the oil spill, followed by a heigh-year recolonization period and a stabilization of the canopy cover, however 20-30% lower than initially observed. We explain this permanent loss by an unexpected persistence of oil pollution in the sediments based on visual and geochemical evidence. Using field spectroscopy and cutting-edge drone hyperspectral imaging, we demonstrate how the continuous exposure of mangrove trees to high levels of pollution affects their health and productivity in the long term, by imposing permanent stressful conditions. Our study also reveals that tree species differ in their sensitivity to oil, giving the most tolerant ones a competitive advantage to recolonize spilled mangroves. By leveraging drone laser scanning, we estimate the loss of forest biomass caused by the oil spill to 9.8-91.2 t ha-1, corresponding to 4.3-40.1 t C ha-1. Based on our findings, we encourage environmental agencies and lawmakers to consider the sublethal effects of oil spills on mangroves in the environmental cost of these accidents. We also encourage petroleum companies to use drone remote sensing in monitoring routines and oil spill response planning to improve mangrove preservation and impact assessment.
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Affiliation(s)
- Guillaume Lassalle
- Geosciences Institute, University of Campinas, PO Box 6152, 13083-855, Campinas, Brazil.
| | | | - Rafael Andre Lourenço
- Instituto Oceanográfico, Universidade de São Paulo (IO-USP), Praça Do Oceanográfico 191, Cidade Universitária, 05508-120, São Paulo, Brazil
| | - Paulo Mazzafera
- Institute of Biology, University of Campinas, PO Box 6152, 13083-855, Campinas, Brazil
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8
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Ríos-Mármol M, Daniel-Hincapié I, Vivas-Aguas LJ, Romero-D'Achiardi D, Espinosa-Díaz L, Canals M, Garcés-Ordóñez O. Environmental risk assessment of petrogenic hydrocarbon spills in mangrove ecosystems: the Tumaco case study as a baseline, Colombian Pacific. ENVIRONMENTAL MONITORING AND ASSESSMENT 2023; 195:440. [PMID: 36867319 DOI: 10.1007/s10661-023-11031-0] [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: 10/24/2022] [Accepted: 02/17/2023] [Indexed: 06/18/2023]
Abstract
Petrogenic hydrocarbon spills (PHS) are harmful to mangrove ecosystems along tropical coastlines in the short and long term. The aim of this study was to assess the environmental risk of recurrent PHS on mangrove ecosystems in Tumaco municipality, Colombian Pacific. Mangrove characteristics and management aspects led to subdividing the study area into 11 units-of-analysis (UAs) for which threats, vulnerability, potential impacts, and risks were assessed based on environmental factors and the formulation and use of indicators in a rating scale with five categories, which are very low, low, moderate, high, and very high. The results showed that all UAs are highly (64%; 15,525 ha) or moderately (36%; 4,464 ha) threatened by PHS, highly (45%; 13,478 ha) or moderately (55%; 6,511 ha) vulnerable to this kind of pollution, and susceptible to high (73%; 17,075 ha) or moderate (27%; 2,914 ha) potential impacts. The environmental risk was high in 73% (17,075 ha) of the UAs, indicating likely irreversible damage to mangrove ecosystems by PHS, thus pointing to the need of urgent intervention by responsible authorities to ease their recovery and conservation. The methodology and results of this study become technical inputs that serve for environmental control and monitoring, which can be incorporated into contingency and risk management plans.
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Affiliation(s)
- Mary Ríos-Mármol
- Instituto de Investigaciones Marinas y Costeras José Benito Vives de Andréis - INVEMAR, Calle 25#2-55, Rodadero, Santa Marta, Colombia.
- Universidad del Magdalena, Programa de Maestría en Desarrollo Territorial Sostenible, Carrera 32 #22-08, Santa Marta, Colombia.
| | - Inger Daniel-Hincapié
- Escuela Naval de Suboficiales (ARC Barranquilla), Grupo de Investigaciones Marinas, Ambientales y Costeras (GIMAC), Calle 58 esquina Vía 40, Barranquilla, Colombia
| | - Lizbeth-Janet Vivas-Aguas
- Instituto de Investigaciones Marinas y Costeras José Benito Vives de Andréis - INVEMAR, Calle 25#2-55, Rodadero, Santa Marta, Colombia.
- Red de Vigilancia para la Conservación y Protección de las Aguas Marinas y Costeras de Colombia - REDCAM, Calle 25#2-55, Rodadero, Santa Marta, Colombia.
| | - Diana Romero-D'Achiardi
- Instituto de Investigaciones Marinas y Costeras José Benito Vives de Andréis - INVEMAR, Calle 25#2-55, Rodadero, Santa Marta, Colombia
| | - Luisa Espinosa-Díaz
- Instituto de Investigaciones Marinas y Costeras José Benito Vives de Andréis - INVEMAR, Calle 25#2-55, Rodadero, Santa Marta, Colombia
- Red de Vigilancia para la Conservación y Protección de las Aguas Marinas y Costeras de Colombia - REDCAM, Calle 25#2-55, Rodadero, Santa Marta, Colombia
| | - Miquel Canals
- GRC Geociències Marines, Departament de Dinàmica de la Terra i de l'Oceà, Universitat de Barcelona, Martí i Franquès s/n, 08028, Barcelona, Spain
| | - Ostin Garcés-Ordóñez
- Instituto de Investigaciones Marinas y Costeras José Benito Vives de Andréis - INVEMAR, Calle 25#2-55, Rodadero, Santa Marta, Colombia.
- Red de Vigilancia para la Conservación y Protección de las Aguas Marinas y Costeras de Colombia - REDCAM, Calle 25#2-55, Rodadero, Santa Marta, Colombia.
- GRC Geociències Marines, Departament de Dinàmica de la Terra i de l'Oceà, Universitat de Barcelona, Martí i Franquès s/n, 08028, Barcelona, Spain.
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9
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Yadav KK, Gupta N, Prasad S, Malav LC, Bhutto JK, Ahmad A, Gacem A, Jeon BH, Fallatah AM, Asghar BH, Cabral-Pinto MMS, Awwad NS, Alharbi OKR, Alam M, Chaiprapat S. An eco-sustainable approach towards heavy metals remediation by mangroves from the coastal environment: A critical review. MARINE POLLUTION BULLETIN 2023; 188:114569. [PMID: 36708616 DOI: 10.1016/j.marpolbul.2022.114569] [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: 03/08/2022] [Revised: 12/27/2022] [Accepted: 12/31/2022] [Indexed: 06/18/2023]
Abstract
Mangroves provide various ecosystem services, carbon sequestration, biodiversity depository, and livelihoods. They are most abundant in marine and coastal ecosystems and are threatened by toxic contaminants like heavy metals released from various anthropogenic activities. However, they have significant potential to survive in salt-driven environments and accumulate various pollutants. The adverse effects of heavy metals have been extensively studied and recognized as toxic to mangrove species. This study sheds light on the dynamics of heavy metal levels, their absorption, accumulation and transport in the soil environment in a mangrove ecosystem. The article also focuses on the potential of mangrove species to remove heavy metals from marine and coastal environments. This review concludes that mangroves are potential candidates to clean up contaminated water, soil, and sediments through their phytoremediation ability. The accumulation of toxic heavy metals by mangroves is mainly through roots with limited upward translocation. Therefore, promoting the maintenance of biodiversity and stability in the coastal environment is recommended as an environmentally friendly and potentially cost-effective approach.
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Affiliation(s)
- Krishna Kumar Yadav
- Faculty of Science and Technology, Madhyanchal Professional University, Ratibad, Bhopal 462044, India; Department of Civil and Environmental Engineering, Faculty of Engineering, PSU Energy Systems Research Institute, Prince of Songkla University, Hat Yai, Songkhla 90110, Thailand.
| | - Neha Gupta
- Institute of Environment and Development Studies, Bundelkhand University, Jhansi 284128, India
| | - Shiv Prasad
- Division of Environment Science, ICAR-Indian Agricultural Research Institute, New Delhi 110012, India
| | - Lal Chand Malav
- ICAR-National Bureau of Soil Survey & Land Use Planning, Regional Centre, Udaipur 313001, India
| | - Javed Khan Bhutto
- Department of Electrical Engineering, College of Engineering, King Khalid University, Abha, Saudi Arabia
| | - Akil Ahmad
- Department of Chemistry, College of Science and Humanities in Al-Kharj, Prince Sattam Bin Abdulaziz University, Al-Kharj 11942, Saudi Arabia
| | - Amel Gacem
- Department of Physics, Faculty of Sciences, University 20 Août 1955, Skikda 21000, Algeria
| | - Byong-Hun Jeon
- Department of Earth Resources & Environmental Engineering, Hanyang University, 222-Wangsimni-ro, Seongdong-gu, Seoul 04763, Republic of Korea
| | - Ahmed M Fallatah
- Department of Chemistry, College of Science, Taif University, Al-Haweiah, Taif 21944, Saudi Arabia
| | - Basim H Asghar
- Department of Chemistry, Faculty of Applied Science, Umm Al-Qura University, Makkah, Saudi Arabia
| | - Marina M S Cabral-Pinto
- Geobiotec Research Centre, Department of Geoscience, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Nasser S Awwad
- Department of Chemistry, King Khalid University, P.O. Box 9004, Abha 61413, Saudi Arabia
| | | | - Manawwer Alam
- Department of Chemistry, College of Science, Kind Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Sumate Chaiprapat
- Department of Civil and Environmental Engineering, Faculty of Engineering, PSU Energy Systems Research Institute, Prince of Songkla University, Hat Yai, Songkhla 90110, Thailand.
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Ximenes AC, Cavanaugh KC, Arvor D, Murdiyarso D, Thomas N, Arcoverde GFB, Bispo PDC, Van der Stocken T. A comparison of global mangrove maps: Assessing spatial and bioclimatic discrepancies at poleward range limits. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 860:160380. [PMID: 36427711 PMCID: PMC9834704 DOI: 10.1016/j.scitotenv.2022.160380] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Revised: 10/18/2022] [Accepted: 11/17/2022] [Indexed: 06/16/2023]
Abstract
Mangrove distribution maps are used for a variety of applications, ranging from estimates of mangrove extent, deforestation rates, quantify carbon stocks, to modelling response to climate change. There are multiple mangrove distribution datasets, which were derived from different remote sensing data and classification methods, and so there are some discrepancies among these datasets, especially with respect to the locations of their range limits. We investigate the latitudinal discrepancies in poleward mangrove range limits represented by these datasets and how these differences translate climatologically considering factors known to control mangrove distributions. We compare four widely used global mangrove distribution maps - the World Atlas of Mangroves, the World Atlas of Mangroves 2, the Global Distribution of Mangroves, the Global Mangrove Watch. We examine differences in climate among 21 range limit positions by analysing a set of bioclimatic variables that have been commonly related to the distribution of mangroves. Global mangrove maps show important discrepancies in the position of poleward range limits. Latitudinal differences between mangrove range limits in the datasets exceed 5°, 7° and 10° in western North America, western Australia and northern West Africa, respectively. In some range limit areas, such as Japan, discrepancies in the position of mangrove range limits in different datasets correspond to differences exceeding 600 mm in annual precipitation and > 10 °C in the minimum temperature of the coldest month. We conclude that dissimilarities in mapping mangrove range limits in different parts of the world can jeopardise inferences of climatic thresholds. We expect that global mapping efforts should prioritise the position of range limits with greater accuracy, ideally combining data from field-based surveys and very high-resolution remote sensing data. An accurate representation of range limits will contribute to better predicting mangrove range dynamics and shifts in response to climate change.
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Affiliation(s)
- Arimatéa C Ximenes
- Center for International Forestry Research (CIFOR), Jl., Situgede, Bogor 16115, Indonesia.
| | - Kyle C Cavanaugh
- Department of Geography, University of California Los Angeles, Los Angeles, USA
| | - Damien Arvor
- CNRS, UMR 6554 LETG, Université Rennes 2, 35043, Rennes, France
| | - Daniel Murdiyarso
- Center for International Forestry Research (CIFOR), Jl., Situgede, Bogor 16115, Indonesia; Department of Geophysics and Meteorology, IPB University, Bogor 16680, Indonesia
| | - Nathan Thomas
- Earth System Science Interdisciplinary Center, University of Maryland, College Park, MD 20740, USA; Biospheric Sciences Laboratory, NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA
| | | | - Polyanna da Conceição Bispo
- Department of Geography, School of Environment, Education and Development, University of Manchester, Oxford Rd, Manchester M13 9PL, UK
| | - Tom Van der Stocken
- Laboratory of Plant Biology and Nature Management, Ecology & Biodiversity, Vrije Universiteit Brussel, Brussels, Belgium
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11
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Fan C, Xu H, Hou X. Spatial efficiency of protected mangrove areas in Madagascar. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 325:116568. [PMID: 36419301 DOI: 10.1016/j.jenvman.2022.116568] [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: 07/04/2022] [Revised: 09/19/2022] [Accepted: 10/17/2022] [Indexed: 06/16/2023]
Abstract
Protected Areas (PAs) are an important nature-based solution for mangrove conservation and rehabilitation. We evaluated spatial effectiveness of PAs for mangroves toward achieving Global Conservation Targets (GCTs). The hypothesis for this study was that PAs with different attributes have insignificant effects on mangrove conservation. We assessed the proportions of the most vulnerable mangroves inside PAs, and focused on a typical mangrove country (Madagascar). First, based on remote sensing technology and big data in Google Earth Engine (GEE), we identified the exposure location of mangroves, and determined the environmental factors significantly influencing mangrove distribution. Then, Vulnerability Assessment and Hot-Spot Analysis models were used to measure spatial vulnerability and hotspots of those values, respectively. Finally, we implemented the statistics for the most vulnerable mangroves inside PAs. It was found that: i. Mangroves were mainly abundant in west and east coasts with low latitudes, and the most typical environmental factor influencing mangrove distribution was elevation and; ii. PAs sheltered 486.18 km2 (22.16%) of the most vulnerable mangroves in Madagascar. Overall, PAs in Madagascar failed to match 30% of spatial requirements proposed by GCTs (A key proportion of spatial requirements used to reverse trends in biodiversity loss). This study provides a quantitative paradigm for verifying the spatial efficiency of PAs, and will inform local decision-makers on places where mangroves are facing adaption loss to optimize mangrove conservation in future.
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Affiliation(s)
- Chao Fan
- Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, 264003, China; University of Chinese Academy of Sciences, Beijing, 100049, China; Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, 264003, China; Shandong Key Laboratory of Coastal Environmental Processes, Yantai, Shandong, 264003, PR China
| | - He Xu
- Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, 264003, China; University of Chinese Academy of Sciences, Beijing, 100049, China; Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, 264003, China; Shandong Key Laboratory of Coastal Environmental Processes, Yantai, Shandong, 264003, PR China
| | - Xiyong Hou
- Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, 264003, China; Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, 264003, China; Shandong Key Laboratory of Coastal Environmental Processes, Yantai, Shandong, 264003, PR China.
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Cepeda D, González-Casarrubios A, Sánchez N, Spedicato A, Michaud E, Zeppilli D. Two new species of mud dragons (Scalidophora: Kinorhyncha) inhabiting a human-impacted mangrove from Mayotte (Southwestern Indian Ocean). ZOOL ANZ 2022. [DOI: 10.1016/j.jcz.2022.09.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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13
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Heintz WJ, Willis JM. Growth responses of Avicennia germinans and Batis maritima seedlings to weathered light sweet crude oil applied to soil and aboveground tissues. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:66148-66159. [PMID: 35499724 DOI: 10.1007/s11356-022-20458-w] [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: 07/13/2021] [Accepted: 04/21/2022] [Indexed: 06/14/2023]
Abstract
Oil spills are a significant stressor to coastal and maritime environments worldwide. The growth responses of Batis maritima and Avicennia germinans seedlings to weathered Deepwater Horizon oiling were assessed through a mesocosm study using a factorial arrangement of 4 soil oiling levels (0 L m-2, 1 L m-2, 2 L m-2, 4 L -m-2) × 3 tissue oiling levels (0% of stem height, 50% of stem height, 100% of stem height). Overall, growth metrics of B. maritima displayed much greater sensitivity to both tissue and soil oiling than A. germinans, which exhibited a relatively high tolerance to both routes of oiling exposure. Batis maritima in the 4 L m-2 soil oiling treatment demonstrated significant reductions in cumulative stem height and leaf number, whereas no significant effects of soil oiling on A. germinans were detected. This was reflected in the end of the study biomass partitioning, where total aboveground and live aboveground biomass were significantly reduced for B. maritima with 4 L m-2 soil oiling, but no impacts to A. germinans were found. Tissue oiling of 100% did appear to reduce B. maritima stem diameter, but no effect of tissue oiling was discerned on biomass partitioning, suggesting that there were no impacts to integrated growth. These findings suggest that B. maritima would be more severely affected by moderate soil oiling than A. germinans.
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Affiliation(s)
- William J Heintz
- Applied Plant Sciences Laboratory, Department of Biological Sciences, Nicholls State University, Thibodaux, LA, 70310, USA
| | - Jonathan M Willis
- Applied Plant Sciences Laboratory, Department of Biological Sciences, Nicholls State University, Thibodaux, LA, 70310, USA.
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14
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Ng YJ, Lim HR, Khoo KS, Chew KW, Chan DJC, Bilal M, Munawaroh HSH, Show PL. Recent advances of biosurfactant for waste and pollution bioremediation: Substitutions of petroleum-based surfactants. ENVIRONMENTAL RESEARCH 2022; 212:113126. [PMID: 35341755 DOI: 10.1016/j.envres.2022.113126] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Revised: 03/11/2022] [Accepted: 03/12/2022] [Indexed: 06/14/2023]
Abstract
Biosurfactant is one of the emerging compounds in the industrial sector that behaves similarly with their synthetic counterparts, as they can reduce surface and interfacial tension between two fluids. Their unique properties also enable biosurfactant molecules to be able to clump together to form micelles that can capture targeted molecules within a solution. Biosurfactants are compared with synthetic surfactants on various applications for which the results shows that biosurfactants are fully capable of replacing synthetic surfactants in applications including enhanced oil recovery and wastewater treatment applications. Biosurfactants are able to be used in different applications as well since they are less toxic than synthetic surfactants. These applications include bioremediation on oil spills in the marine environment and bioremediation for contaminated soil and water, as well as a different approach on the pharmaceutical applications. The future of biosurfactants in the pharmaceutical industry and petroleum industry as well as challenges faced for implementing biosurfactants into large-scale applications are also discussed at the end of this review.
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Affiliation(s)
- Yan Jer Ng
- Department of Chemical and Environmental Engineering, Faculty of Science and Engineering, University of Nottingham Malaysia, Jalan Broga, 43500, Semenyih, Selangor Darul Ehsan, Malaysia.
| | - Hooi Ren Lim
- Department of Chemical and Environmental Engineering, Faculty of Science and Engineering, University of Nottingham Malaysia, Jalan Broga, 43500, Semenyih, Selangor Darul Ehsan, Malaysia.
| | - Kuan Shiong Khoo
- Faculty of Applied Science, UCSI University. No. 1, Jalan Menara Gading, UCSI Heights, 56000, Cheras Kuala Lumpur, Malaysia.
| | - Kit Wayne Chew
- School of Energy and Chemical Engineering, Xiamen University Malaysia, Jalan Sunsuria, Bandar Sunsuria, 43900, Sepang, Selangor Darul Ehsan, Malaysia; College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China.
| | - Derek Juinn Chieh Chan
- School of Chemical Engineering, Universiti Sains Malaysia, 14300, Nibong Tebal, Penang, Malaysia.
| | - Muhammad Bilal
- School of Life Sciences and Food Engineering, Huaiyin Institute of Technology, Huaian, 223003, China.
| | - Heli Siti Halimatul Munawaroh
- Study Program of Chemistry, Department of Chemistry Education, Universitas Pendidikan Indonesia, Bandung 40154, West Java, Indonesia.
| | - Pau Loke Show
- Department of Chemical and Environmental Engineering, Faculty of Science and Engineering, University of Nottingham Malaysia, Jalan Broga, 43500, Semenyih, Selangor Darul Ehsan, Malaysia; Zhejiang Provincial Key Laboratory for Subtropical Water Environment and Marine Biological Resources Protection, Wenzhou University, Wenzhou 325035, China.
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15
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Renegar DA, Schuler PA, Knap AH, Dodge RE. TRopical Oil Pollution Investigations in Coastal Systems [TROPICS]: A synopsis of impacts and recovery. MARINE POLLUTION BULLETIN 2022; 181:113880. [PMID: 35843160 DOI: 10.1016/j.marpolbul.2022.113880] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Revised: 06/17/2022] [Accepted: 06/21/2022] [Indexed: 06/15/2023]
Abstract
The TRopical Oil Pollution Investigations in Coastal Systems (TROPICS) experiment, conducted on the Caribbean coast of Panama, has become one of the most comprehensive field experiments examining the long-term impacts of oil and dispersed oil exposures in nearshore tropical marine environments. From the initial experiment through more than three decades of study and data collection visits, the intertidal and subtidal communities have exhibited significantly different impact and recovery regimes, depending on whether the sites were exposed to crude oil only or crude oil treated with a chemical dispersant. This review provides a synopsis of the original experiment and a cumulative summary of the results and observations, illustrating the environmental and ecosystem trade-offs of chemical dispersant use in mangrove, seagrass, and coral reef environments.
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Affiliation(s)
- D Abigail Renegar
- Nova Southeastern University, Halmos College of Arts and Sciences, 8000 North Ocean Drive, Dania, FL, USA.
| | - Paul A Schuler
- Oil Spill Response Limited, 2381 Stirling Road, Fort Lauderdale, FL 33312, USA
| | - Anthony H Knap
- Texas A&M University, Geochemical and Environmental Research Group, College Station, TX 77845, USA
| | - Richard E Dodge
- Nova Southeastern University, Halmos College of Arts and Sciences, 8000 North Ocean Drive, Dania, FL, USA
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16
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Development of Rhizophora mangle (Rhizophoraceae) and Avicennia schaueriana (Avicenniaceae) in the presence of a hydrocarbon-degrading bacterial consortium and marine diesel oil. 3 Biotech 2022; 12:157. [PMID: 35791411 PMCID: PMC9250571 DOI: 10.1007/s13205-022-03212-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Accepted: 11/10/2021] [Indexed: 11/25/2022] Open
Abstract
The development of Rhizophora mangle and Avicennia schaueriana seedlings impacted by marine diesel oil (MDO) was evaluated in the presence or absence of a hydrocarbon-degrading bacterial consortium (HBC). The bioassays were conducted in a greenhouse during 6 months and consisted of three different treatments (control, MDO only and MDO + HBC). The bacterial consortium was mainly composed of Bacillus spp. (73%), but Rhizobium spp., Pseudomonas spp., Ochrobactrum spp., and Brevundimonas spp. were also present. After 6 months, A. schaueriana seedlings showed higher mortality compared to those of R. mangle; R. mangle exhibited 68% (control), 44% (MDO alone) and 50% (MDO + HBC) seedlings survivorship compared to 42% (control), 0% (MDO alone) and 4% (MDO + HBC) for A. schaueriana. This variability may be due to differences in species physiology. Stem growth, diameter and number of leaves remained constant during the 6 months of the experiment with marine diesel oil and hydrocarbon-degrading bacterial consortium (MDO + BBC). For both mangrove species, bacterial enzymatic activity in the sediments was sufficient to maintain cell counts of 107 cells cm-3 in the rhizospheric soil and possibly synthetize the extracellular polymeric substances (EPS) that may emulsify and solubilize oil products.
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17
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Wang J, Xu J, Lian Z, Wang J, Chen G, Li Y, Yu H. Facile and green fabrication of robust microstructured stainless steel mesh for efficient oil/water separation via waterjet-assisted laser ablation. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.128703] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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18
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Recent advancements in hydrocarbon bioremediation and future challenges: a review. 3 Biotech 2022; 12:135. [PMID: 35620568 DOI: 10.1007/s13205-022-03199-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2022] [Accepted: 05/04/2022] [Indexed: 11/01/2022] Open
Abstract
Petrochemicals are important hydrocarbons, which are one of the major concerns when accidently escaped into the environment. On one hand, these cause soil and fresh water pollution on land due to their seepage and leakage from automobile and petrochemical industries. On the other hand, oil spills occur during the transport of crude oil or refined petroleum products in the oceans around the world. These hydrocarbon and petrochemical spills have not only posed a hazard to the environment and marine life, but also linked to numerous ailments like cancers and neural disorders. Therefore, it is very important to remove or degrade these pollutants before their hazardous effects deteriorate the environment. There are varieties of mechanical and chemical methods for removing hydrocarbons from polluted areas, but they are all ineffective and expensive. Bioremediation techniques provide an economical and eco-friendly mechanism for removing petrochemical and hydrocarbon residues from the affected sites. Bioremediation refers to the complete mineralization or transformation of complex organic pollutants into the simplest compounds by biological agents such as bacteria, fungi, etc. Many indigenous microbes present in nature are capable of detoxification of various hydrocarbons and their contaminants. This review presents an updated overview of recent advancements in various technologies used in the degradation and bioremediation of petroleum hydrocarbons, providing useful insights to manage such problems in an eco-friendly manner.
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19
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Environmental Impacts and Challenges Associated with Oil Spills on Shorelines. JOURNAL OF MARINE SCIENCE AND ENGINEERING 2022. [DOI: 10.3390/jmse10060762] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Oil spills are of great concern because they impose a threat to the marine ecosystem, including shorelines. As oil spilled at sea is transported to the shoreline, and after its arrival, its behavior and physicochemical characteristics change because of natural weathering phenomena. Additionally, the fate of the oil depends on shoreline type, tidal energy, and environmental conditions. This paper critically overviews the vulnerability of shorelines to oil spill impact and the implication of seasonal variations with the natural attenuation of oil. A comprehensive review of various monitoring techniques, including GIS tools and remote sensing, is discussed for tracking, and mapping oil spills. A comparison of various remote sensors shows that laser fluorosensors can detect oil on various types of substrates, including snow and ice. Moreover, current methods to prevent oil from reaching the shoreline, including physical booms, sorbents, and dispersants, are examined. The advantages and limitations of various physical, chemical, and biological treatment methods and their application suitability for different shore types are discussed. The paper highlights some of the challenges faced while managing oil spills, including viewpoints on the lack of monitoring data, the need for integrated decision-making systems, and the development of rapid response strategies to optimize the protection of shorelines from oil spills.
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20
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Palit K, Rath S, Chatterjee S, Das S. Microbial diversity and ecological interactions of microorganisms in the mangrove ecosystem: Threats, vulnerability, and adaptations. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:32467-32512. [PMID: 35182344 DOI: 10.1007/s11356-022-19048-7] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2021] [Accepted: 01/31/2022] [Indexed: 06/14/2023]
Abstract
Mangroves are among the world's most productive ecosystems and a part of the "blue carbon" sink. They act as a connection between the terrestrial and marine ecosystems, providing habitat to countless organisms. Among these, microorganisms (e.g., bacteria, archaea, fungi, phytoplankton, and protozoa) play a crucial role in this ecosystem. Microbial cycling of major nutrients (carbon, nitrogen, phosphorus, and sulfur) helps maintain the high productivity of this ecosystem. However, mangrove ecosystems are being disturbed by the increasing concentration of greenhouse gases within the atmosphere. Both the anthropogenic and natural factors contribute to the upsurge of greenhouse gas concentration, resulting in global warming. Changing climate due to global warming and the increasing rate of human interferences such as pollution and deforestation are significant concerns for the mangrove ecosystem. Mangroves are susceptible to such environmental perturbations. Global warming, human interventions, and its consequences are destroying the ecosystem, and the dreadful impacts are experienced worldwide. Therefore, the conservation of mangrove ecosystems is necessary for protecting them from the changing environment-a step toward preserving the globe for better living. This review highlights the importance of mangroves and their microbial components on a global scale and the degree of vulnerability of the ecosystems toward anthropic and climate change factors. The future scenario of the mangrove ecosystem and the resilience of plants and microbes have also been discussed.
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Affiliation(s)
- Krishna Palit
- Laboratory of Environmental Microbiology and Ecology (LEnME), Department of Life Science, National Institute of Technology, Rourkela, 769008, Odisha, India
| | - Sonalin Rath
- Laboratory of Environmental Microbiology and Ecology (LEnME), Department of Life Science, National Institute of Technology, Rourkela, 769008, Odisha, India
| | - Shreosi Chatterjee
- Laboratory of Environmental Microbiology and Ecology (LEnME), Department of Life Science, National Institute of Technology, Rourkela, 769008, Odisha, India
| | - Surajit Das
- Laboratory of Environmental Microbiology and Ecology (LEnME), Department of Life Science, National Institute of Technology, Rourkela, 769008, Odisha, India.
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21
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Global Mangrove Deforestation and Its Interacting Social-Ecological Drivers: A Systematic Review and Synthesis. SUSTAINABILITY 2022. [DOI: 10.3390/su14084433] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Globally, mangrove forests are substantially declining, and a globally synthesized database containing the drivers of deforestation and drivers’ interactions is scarce. Here, we synthesized the key social-ecological drivers of global mangrove deforestation by reviewing about two hundred published scientific studies over the last four decades (from 1980 to 2021). Our focus was on both natural and anthropogenic drivers with their gradual and abrupt impacts and on their geographic coverage of effects, and how these drivers interact. We also summarized the patterns of global mangrove coverage decline between 1990 and 2020 and identified the threatened mangrove species. Our consolidated studies reported an 8600 km2 decline in the global mangrove coverage between 1990 and 2020, with the highest decline occurring in South and Southeast Asia (3870 km2). We could identify 11 threatened mangrove species, two of which are critically endangered (Sonneratia griffithii and Bruguiera hainseii). Our reviewed studies pointed to aquaculture and agriculture as the predominant driver of global mangrove deforestation though their impacts varied across global regions. Gradual climate variations, i.e., sea-level rise, long-term precipitation, and temperature changes and driven coastline erosion, salinity intrusion and acidity at coasts, constitute the second major group of drivers. Our findings underline a strong interaction across natural and anthropogenic drivers, with the strongest interaction between the driver groups aquaculture and agriculture and industrialization and pollution. Our results suggest prioritizing globally coordinated empirical studies linking drivers and mangrove deforestation and global development of policies for mangrove conservation.
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22
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Ojeda‐Morales ME, Domínguez‐Domínguez M, Herrera‐Haro JG, Rivera MAH, Córdova‐Bautista Y, Martínez‐Zurimendi P. Do surfactants influence the growth of
Rhizophora mangle
during restoration of contaminated soil with emulsified oil? Restor Ecol 2022. [DOI: 10.1111/rec.13639] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Affiliation(s)
- Marcia E. Ojeda‐Morales
- Postgraduate Doctorate in Research Sciences Colegio de Postgraduados Campus Tabasco, Periférico Carlos A. Molina km 3.5 Cárdenas Tabasco Mexico C.P. 86500
- Biotechnology Laboratory Universidad Juárez Autónoma de Tabasco Carretera Cunduacán‐Jalpa Km. 1 Colonia La Esmeralda Cunduacán Tabasco Mexico C.P. 86400
| | - Marivel Domínguez‐Domínguez
- Colegio de Postgraduados Campus Tabasco, Periférico Carlos A. Molina km 3.5 Cárdenas Tabasco Mexico C.P. 86500
| | - José G. Herrera‐Haro
- Colegio de Postgraduados, Campus Montecillo Carretera México‐Texcoco Km. 36.5, Montecillo, Texcoco Estado de Mexico C.P. 56230
| | - Miguel A. Hernández Rivera
- Biotechnology Laboratory Universidad Juárez Autónoma de Tabasco Carretera Cunduacán‐Jalpa Km. 1 Colonia La Esmeralda Cunduacán Tabasco Mexico C.P. 86400
| | - Yolanda Córdova‐Bautista
- Biotechnology Laboratory Universidad Juárez Autónoma de Tabasco Carretera Cunduacán‐Jalpa Km. 1 Colonia La Esmeralda Cunduacán Tabasco Mexico C.P. 86400
| | - Pablo Martínez‐Zurimendi
- El Colegio de la Frontera Sur Unidad Villahermosa. Carretera Villahermosa‐Reforma km 15.5. Ranchería Guineo 2ª sección, Villahermosa Tabasco Mexico C.P. 86280
- Instituto Universitario de Investigación y Gestión Forestal Sostenible (IUGFS) Universidad de Valladolid‐INIA Avda. de Madrid 57 Palencia Spain C.P. 34004
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23
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Teuber A, Stach R, Haas J, Mizaikoff B. Innovative Substrate-Integrated Hollow Waveguide Coupled Attenuated Total Reflection Sensors for Quantum Cascade Laser Based Infrared Spectroscopy in Harsh Environments. APPLIED SPECTROSCOPY 2022; 76:132-140. [PMID: 34890273 DOI: 10.1177/00037028211064331] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
An innovative mid-infrared spectroscopic sensor system based on quantum cascade lasers has been developed. The system combines the versatility of substrate-integrated hollow waveguides (IHWGs) with the robustness of attenuated total reflection (ATR) crystals employed as internal reflection waveguides for evanescent field sensing. IHWGs are highly reflective metal structures that propagate infrared (IR) radiation and were used as light pipes for coupling radiation into the ATR waveguide. The combined IHWG-ATR device has been designed such that the utmost stability and robustness of the optical alignment were ensured. This novel assembly enables evanescent field absorption measurements at yet unprecedently harsh conditions, that is, high pressure and temperature. Combining these advantages, this innovative sensor assembly is perfectly suited for taking ATR spectroscopy into the field where the robustness of the assembly and optical alignment is essential.
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Affiliation(s)
- Andrea Teuber
- Institute of Analytical and Bioanalytical Chemistry, 9189Ulm University, Ulm, Germany
| | | | | | - Boris Mizaikoff
- Institute of Analytical and Bioanalytical Chemistry, 9189Ulm University, Ulm, Germany
- 199772Hahn-Schickard, Ulm, Germany
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24
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Feng Q, An C, Chen Z, Owens E, Niu H, Wang Z. Assessing the coastal sensitivity to oil spills from the perspective of ecosystem services: A case study for Canada's pacific coast. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2021; 296:113240. [PMID: 34271360 DOI: 10.1016/j.jenvman.2021.113240] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Revised: 05/03/2021] [Accepted: 07/06/2021] [Indexed: 06/13/2023]
Abstract
Coastal environment is one of the most important ecological and socioeconomic areas. However, increasing energy demand and economic development lead to a continuous gas and oil exploration, production, and traffics, which notably raise the risk of oil spill accidents in coastal areas. Sensitivity assessment aiming to determine the coastal features that would be severely impaired by spill incidents is a crucial part of the response planning. In this study, an innovative framework for coastal sensitivity mapping that incorporated ecosystem service (ES) valuation and multidimensional assessment was proposed. Sensitivity was computed by valuing physical, biological, and social-economical indicators from ES perspective and separating each indicator into specific coastal domains. For different ES typologies, provisioning services contributed most to the overall ES value followed by culture services, supporting services, and regulating services. For ES value in different coastal domains, the highest value was recorded in the water column followed by water surface, shoreline, and seabed. However, the shoreline ranked highest regarding the ES value per ha. Sensitivity assessment revealed that sensitive areas differed in different domains, both in distribution and extent. Compared with the scoring method, the ES valuation method showed more coincidence with Ecologically and Biologically Significant Areas (EBSA), representing a more precise and practical approach for sensitivity assessment. A three-dimensional (3D) oil spill model was also applied to generate maps of oil contamination probability in shoreline, water surface, and water column. The obtained results highlighted the significance of incorporating different coastal domains into oil spill responses, and the urgent demand to broaden and deepen our understanding of ecological processes across the vertical coastal zones.
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Affiliation(s)
- Qi Feng
- Department of Building, Civil and Environmental Engineering, Concordia University, Montreal, QC, H3G 1M8, Canada
| | - Chunjiang An
- Department of Building, Civil and Environmental Engineering, Concordia University, Montreal, QC, H3G 1M8, Canada.
| | - Zhi Chen
- Department of Building, Civil and Environmental Engineering, Concordia University, Montreal, QC, H3G 1M8, Canada
| | - Edward Owens
- Owens Coastal Consultants, Bainbridge Island, WA, 98110, United States
| | - Haibo Niu
- Department of Engineering, Faculty of Agriculture, Dalhousie University, Truro, NS, B2N 5E3, Canada
| | - Zheng Wang
- Department of Building, Civil and Environmental Engineering, Concordia University, Montreal, QC, H3G 1M8, Canada
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25
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Waryszak P, Palacios MM, Carnell PE, Yilmaz IN, Macreadie PI. Planted mangroves cap toxic petroleum-contaminated sediments. MARINE POLLUTION BULLETIN 2021; 171:112746. [PMID: 34332353 DOI: 10.1016/j.marpolbul.2021.112746] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Revised: 07/13/2021] [Accepted: 07/19/2021] [Indexed: 06/13/2023]
Abstract
Mangroves are known to provide many ecosystem services, however there is little information on their potential role to cap and immobilise toxic levels of total petroleum hydrocarbons (TPH). Using an Australian case study, we investigated the capacity of planted mangroves (Avicennia marina) to immobilise TPH within a small embayment (Stony Creek, Victoria, Australia) subjected to minor oil spills throughout the 1980s. Mangroves were planted on the oil rich strata in 1984 to rehabilitate the site. Currently the area is covered with a dense mangrove forest. One-meter-long sediment cores revealed that mangroves have formed a thick (up to 30 cm) organic layer above the TPH-contaminated sediments, accumulating on average 6.6 mm of sediment per year. Mean TPH levels below this organic layer (30-50 cm) are extremely toxic (30,441.6 mg kg-1), exceeding safety thresholds up to 220-fold which is eight times higher when compared to top layer (0-10 cm).
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Affiliation(s)
- Paweł Waryszak
- School of Life and Environmental Sciences, Centre for Integrative Ecology, Deakin University, Melbourne Burwood Campus, 221 Burwood Highway, Burwood, Victoria 3125, Australia.
| | - Maria M Palacios
- School of Life and Environmental Sciences, Centre for Integrative Ecology, Deakin University, Melbourne Burwood Campus, 221 Burwood Highway, Burwood, Victoria 3125, Australia
| | - Paul E Carnell
- School of Life and Environmental Sciences, Centre for Integrative Ecology, Deakin University, Queenscliff Marine Science Centre, 2A Bellarine Highway, Queenscliff, Victoria 3225, Australia
| | - I Noyan Yilmaz
- School of Life and Environmental Sciences, Centre for Integrative Ecology, Deakin University, Melbourne Burwood Campus, 221 Burwood Highway, Burwood, Victoria 3125, Australia
| | - Peter I Macreadie
- School of Life and Environmental Sciences, Centre for Integrative Ecology, Deakin University, Melbourne Burwood Campus, 221 Burwood Highway, Burwood, Victoria 3125, Australia
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26
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de Almeida FF, Freitas D, Motteran F, Fernandes BS, Gavazza S. Bioremediation of polycyclic aromatic hydrocarbons in contaminated mangroves: Understanding the historical and key parameter profiles. MARINE POLLUTION BULLETIN 2021; 169:112553. [PMID: 34091245 DOI: 10.1016/j.marpolbul.2021.112553] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Revised: 04/26/2021] [Accepted: 05/24/2021] [Indexed: 06/12/2023]
Abstract
Sensitive biomes, such as coastal ecosystems, have become increasingly susceptible to environmental impacts caused by oil logistics and storing, which, although more efficient nowadays, still cause spills. Thus, bioremediation techniques attract attention owing to their low impact on the environment. Among petroleum-based compounds, polycyclic aromatic hydrocarbons (PAHs) are known for their potential impact and persistence in the environment. Therefore, PAH bioremediation is notably a technique capable of reducing these polluting compounds in the environment. However, there is a lack of understanding of microbial growth process conditions, leading to a less efficient choice of bioremediation methods. This article provides a review of the bioremediation processes in mangroves contaminated with oils and PAHs and an overview of some physicochemical and biological factors. Special attention was given to the lack of approach regarding experiments that have been conducted in situ and that considered the predominance of the anaerobic condition of mangroves.
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Affiliation(s)
- Felipe Filgueiras de Almeida
- Department of Civil Engineering, Federal University of Pernambuco (UFPE), Acadêmico Hélio Ramos Avenue, s/n, 50740-530 Recife, PE, Brazil
| | - Danúbia Freitas
- Department of Civil Engineering, Federal University of Pernambuco (UFPE), Acadêmico Hélio Ramos Avenue, s/n, 50740-530 Recife, PE, Brazil
| | - Fabrício Motteran
- Department of Civil Engineering, Federal University of Pernambuco (UFPE), Acadêmico Hélio Ramos Avenue, s/n, 50740-530 Recife, PE, Brazil
| | - Bruna Soares Fernandes
- Department of Civil Engineering, Federal University of Pernambuco (UFPE), Acadêmico Hélio Ramos Avenue, s/n, 50740-530 Recife, PE, Brazil
| | - Sávia Gavazza
- Department of Civil Engineering, Federal University of Pernambuco (UFPE), Acadêmico Hélio Ramos Avenue, s/n, 50740-530 Recife, PE, Brazil.
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27
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Carlson RR, Evans LJ, Foo SA, Grady BW, Li J, Seeley M, Xu Y, Asner GP. Synergistic benefits of conserving land-sea ecosystems. Glob Ecol Conserv 2021. [DOI: 10.1016/j.gecco.2021.e01684] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
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Wang J, Xu J, Chen G, Lian Z, Yu H. Reversible Wettability between Underwater Superoleophobicity and Superhydrophobicity of Stainless Steel Mesh for Efficient Oil-Water Separation. ACS OMEGA 2021; 6:77-84. [PMID: 33458461 PMCID: PMC7807473 DOI: 10.1021/acsomega.0c03369] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Accepted: 11/02/2020] [Indexed: 05/06/2023]
Abstract
Design and fabrication of smart materials with reversible wettability for oil-water separation have attracted worldwide attention due to the increasingly serious water pollution problem. In this study, a rough oxide coating with micro/nanoscale structures is developed on the 304 stainless steel mesh (SSM) by laser ablation. The smart surface with ethanol immersion and natural drying treatments shows the wetting conversion between underwater superoleophobicity and superhydrophobicity. Based on the wettability transition behavior, both light and heavy oil-water mixtures can be separated with the high separation efficiency. Moreover, after being exposed to various corrosive solutions and high temperatures, the smart surface still shows prominent environmental stability. Switchable surface with excellent properties should be an optimal choice to solve the environmental conditions that need to be addressed urgently.
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Garcia MR, Martins CC. A systematic evaluation of polycyclic aromatic hydrocarbons in South Atlantic subtropical mangrove wetlands under a coastal zone development scenario. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2021; 277:111421. [PMID: 33069149 DOI: 10.1016/j.jenvman.2020.111421] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Revised: 09/05/2020] [Accepted: 09/23/2020] [Indexed: 06/11/2023]
Abstract
Mangrove forests worldwide are threatened environments considered vulnerable to chronic contamination by hydrophobic contaminants such as polycyclic aromatic hydrocarbons (PAHs). These ecosystems have a key role in the dynamics of biogenic and anthropogenic carbon storage and provide proper conditions for accumulation. One of most important subtropical mangrove swamps in the South Atlantic is located in the Paranaguá Estuarine System (PES), the largest bay of South Brazil surrounded by well-preserved Atlantic rainforests; however, the PES is under imminent risks of damage, e.g., due to incidental oil spills during port operations. In this scenario, PAHs were assessed for the first time in the mangrove sediments of the PES. The concentrations of 16 priority PAHs (EPA) (<DL - 234.3 ng g-1, 36 samples) were higher than those observed in previous studies for bottom sediments and had a similar order of magnitude as those for other human-impacted mangroves but were lower than those of other heavily impacted mangroves. A moderate level of anthropic contamination was observed, and the main probable sources of PAHs were navigation and domestic effluents. Bulk parameters (TOC/TN ratio and δ13C) showed the estuarine land-sea gradient and helped define the preferential sites of PAH deposition due to its correlation with TOC and fine sediments. Marine hydrodynamics and/or dilution processes had a major influence on PAH distribution, resulting in higher concentrations in the inner/sheltered areas of the estuary and lower values in the outer zone of the estuary with higher hydrodynamic energy. The environmental features and anthropogenic forcing of the PES added to the relative absence of a detailed evaluation of the levels of and environmental risks posed by PAHs in other subtropical mangrove ecosystems located in the Southern Hemisphere, reinforcing the importance of the current study.
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Affiliation(s)
- Marina Reback Garcia
- Programa de Pós-Graduação Em Sistemas Costeiros e Oceânicos (PGSISCO), Universidade Federal Do Paraná, Caixa Postal 61, 83255-976, Pontal Do Paraná, PR, Brazil; Centro de Estudos Do Mar, Universidade Federal Do Paraná, Caixa Postal 61, 83255-976, Pontal Do Paraná, PR, Brazil
| | - César C Martins
- Centro de Estudos Do Mar, Universidade Federal Do Paraná, Caixa Postal 61, 83255-976, Pontal Do Paraná, PR, Brazil.
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Moradi B, Kissen R, Maivan HZ, Hashtroudi MS, Sorahinobar M, Sparstad T, Bones AM. Assessment of oxidative stress response genes in Avicennia marina exposed to oil contamination - Polyphenol oxidase (PPOA) as a biomarker. ACTA ACUST UNITED AC 2020; 28:e00565. [PMID: 33318965 PMCID: PMC7725677 DOI: 10.1016/j.btre.2020.e00565] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Revised: 10/19/2020] [Accepted: 11/19/2020] [Indexed: 12/24/2022]
Abstract
Avicennia marina plants tolerate exposure to mild oil contamination in soil and they can survive at higher concentrations. Oil contaminated soil induced stronger transcriptional responses in leaves than in roots of A. marina. Our suggested biomarker PPOA showed a significant up-regulation in leaves under all tested oil concentrations
Mangrove plants, which inhabit and form sensitive ecosystems in the intertidal zones of tropical and subtropical coastlines, though vulnerable to petroleum pollution, still maintain their growth under oil contamination. To elucidate the molecular response of mangrove plants to crude oil–sediment mixture, seeds of Avicennia marina were planted and grown on 0, 2.5, 5.0, 7.5 and10 % (w/w) oil-contaminated soil. Plant biomass was highly affected from 3.05 ± 0.28 (Control) to 0.50 ± .07 (10 %) and from 3.47 ± 0.12 to 1.88 ± 0.08 in 2 and 4 months old plants respectively. The expression analysis of 11genes belonging to detoxification pathways in the roots and leaves of 2 and 4 month-old plants was evaluated by qRT-PCR. Our results showed changes in expression levels of Fe-SOD, Mn-SOD, CAT, PRX, PPOs, GSTs, and NAP2 whose products are involved in reactive oxygen species (ROS) and xenobiotic detoxification. PPOA showed the highest expression induction of 43 ± 1.15, followed by CAT (12.61 ± 3.25) and PPOB (6.38 ± 1.34) in leaves of 2 months old seedlings grown on 7.5, 10 and 7.5 % oil contaminated soil respectively. PPOA (39.23 ± 2.1), PRX (32.13 ± 1.2) as well as PPOB (26.11 ± 1.3) showed the highest expression induction in leaves of 4 months old plants grown in 2.5 % oil contaminated soil. Our data indicated that PPOA can be a good biomarker candidate gene for long term exposure to oil contamination in A. marina.
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Affiliation(s)
- Babak Moradi
- Department of Plant Biology, Faculty of Biological Sciences, Tarbiat Modares University, Tehran, Iran
| | - Ralph Kissen
- Cell Molecular Biology and Genomics Group, Department of Biology, Norwegian University of Science and Technology (NTNU), Trondheim, Norway
| | - Hassan Zare Maivan
- Department of Plant Biology, Faculty of Biological Sciences, Tarbiat Modares University, Tehran, Iran
| | | | - Mona Sorahinobar
- Department of Plant Biology, Faculty of Biological Science, Alzahra University, Tehran, Iran
| | - Torfinn Sparstad
- Cell Molecular Biology and Genomics Group, Department of Biology, Norwegian University of Science and Technology (NTNU), Trondheim, Norway
| | - Atle M Bones
- Cell Molecular Biology and Genomics Group, Department of Biology, Norwegian University of Science and Technology (NTNU), Trondheim, Norway
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31
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Singh H, Bhardwaj N, Arya SK, Khatri M. Environmental impacts of oil spills and their remediation by magnetic nanomaterials. ACTA ACUST UNITED AC 2020. [DOI: 10.1016/j.enmm.2020.100305] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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32
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Land Cover Dynamics and Mangrove Degradation in the Niger Delta Region. REMOTE SENSING 2020. [DOI: 10.3390/rs12213619] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The Niger Delta Region is the largest river delta in Africa and features the fifth largest mangrove forest on Earth. It provides numerous ecosystem services to the local populations and holds a wealth of biodiversity. However, due to the oil and gas reserves and the explosion of human population it is under threat from overexploitation and degradation. There is a pressing need for an accurate assessment of the land cover dynamics in the region. The limited previous efforts have produced controversial results, as the area of western Africa is notorious for the gaps in the Landsat archive and the lack of cloud-free data. Even fewer studies have attempted to map the extent of the degraded mangrove forest system, reporting low accuracies. Here, we map the eight main land cover classes over the NDR using spectral-temporal metrics from all available Landsat data centred around three epochs. We also test the performance of the classification when L-band radar data are added to the Landsat-based metrics. To further our understanding of the land cover change dynamics, we carry out two additional assessments: a change intensity analysis for the entire NDR and, focusing specifically on the mangrove forest, we analyse the fragmentation of both the healthy and the degraded mangrove land cover classes. We achieve high overall classification accuracies in all epochs (~79% for 1988, and 82% for 2000 and 2013) and are able to map the degraded mangroves accurately, for the first time, with user’s accuracies between 77% and 87% and producer’s accuracies consistently above 82%. Our results show that mangrove forests, lowland rainforests, and freshwater forests are reporting net and highly intense losses (mangrove net loss: ~500 km2; woodland net loss: ~1400 km2), while built-up areas have almost doubled in size (from 1990 km2 in 1988 to 3730 km2 in 2013). The mangrove forests are also consistently more fragmented, with the opposite effect being observed for the degraded mangroves in more recent years. Our study provides a valuable assessment of land cover dynamics in the NDR and the first ever accurate estimates of the extent of the degraded mangrove forest and its fragmentation.
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Hook SE. Beyond Thresholds: A Holistic Approach to Impact Assessment Is Needed to Enable Accurate Predictions of Environmental Risk from Oil Spills. INTEGRATED ENVIRONMENTAL ASSESSMENT AND MANAGEMENT 2020; 16:813-830. [PMID: 32729983 DOI: 10.1002/ieam.4321] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Revised: 04/13/2020] [Accepted: 06/04/2020] [Indexed: 05/25/2023]
Abstract
The risk assessment for the environmental impact of oil spills in Australia is often conducted in part using a combination of spill mapping and toxicological thresholds derived from laboratory studies. While this process is useful in planning operational responses, such as where to position equipment stockpiles and whether to disperse oil, and can be used to identify areas near the spill site where impacts are likely to occur, it cannot accurately predict the environmental consequences of an oil spill or the ecosystem recovery times. Evidence of this disconnect between model predictions and observed impacts is the lack of a profound effect of the Deepwater Horizon wellhead blowout on recruitment to fisheries in the northern Gulf of Mexico, contrary to the predictions made in the Natural Resources Damage Assessment and despite the occurrence of impacts of the spill on marine mammals, marshes, and deep water ecosystems. The incongruity between predictions made with the current approach using threshold monitoring and impacts measured in the field results from some of the assumptions included in the oil spill models. The incorrect assumptions include that toxicity is acute, results from dissolved phase exposure, and would be readily reversible. The toxicity tests from which threshold models are derived use members of the ecosystem that are easily studied in the lab but may not represent the ecosystem as a whole. The test species are typically highly abundant plankton or planktonic life stages, and they have life histories that account for rapid changes in environmental conditions. As a consequence, these organisms recover quickly from an oil spill. The interdependence of ecosystem components, including the reliance of organisms on their microbiomes, is often overlooked. Additional research to assess these data gaps conducted using economically and ecologically relevant species, especially in Australia and other understudied areas of the world, and the use of population dynamic models, will improve the accuracy of environmental risk assessment for oil spills. Integr Environ Assess Manag 2020;16:813-830. © 2020 SETAC.
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Affiliation(s)
- Sharon E Hook
- CSIRO Oceans and Atmosphere, Hobart, Tasmania, Australia
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Introducing the Mangrove Microbiome Initiative: Identifying Microbial Research Priorities and Approaches To Better Understand, Protect, and Rehabilitate Mangrove Ecosystems. mSystems 2020; 5:5/5/e00658-20. [PMID: 33082281 PMCID: PMC7577295 DOI: 10.1128/msystems.00658-20] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Mangrove ecosystems provide important ecological benefits and ecosystem services, including carbon storage and coastline stabilization, but they also suffer great anthropogenic pressures. Microorganisms associated with mangrove sediments and the rhizosphere play key roles in this ecosystem and make essential contributions to its productivity and carbon budget. Understanding this nexus and moving from descriptive studies of microbial taxonomy to hypothesis-driven field and lab studies will facilitate a mechanistic understanding of mangrove ecosystem interaction webs and open opportunities for microorganism-mediated approaches to mangrove protection and rehabilitation. Mangrove ecosystems provide important ecological benefits and ecosystem services, including carbon storage and coastline stabilization, but they also suffer great anthropogenic pressures. Microorganisms associated with mangrove sediments and the rhizosphere play key roles in this ecosystem and make essential contributions to its productivity and carbon budget. Understanding this nexus and moving from descriptive studies of microbial taxonomy to hypothesis-driven field and lab studies will facilitate a mechanistic understanding of mangrove ecosystem interaction webs and open opportunities for microorganism-mediated approaches to mangrove protection and rehabilitation. Such an effort calls for a multidisciplinary and collaborative approach, involving chemists, ecologists, evolutionary biologists, microbiologists, oceanographers, plant scientists, conservation biologists, and stakeholders, and it requires standardized methods to support reproducible experiments. Here, we outline the Mangrove Microbiome Initiative, which is focused around three urgent priorities and three approaches for advancing mangrove microbiome research.
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Coastal Ecosystem Services, Social Equity, and Blue Growth: A Case Study from South-Eastern Bangladesh. JOURNAL OF MARINE SCIENCE AND ENGINEERING 2020. [DOI: 10.3390/jmse8100815] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
By employing empirical and secondary data (qualitative and quantitative), this study demonstrates how social equity (with its three dimensions) can meaningfully address the conservation of the coastal social–ecological system (SES), without losing diverse ecosystem services (ES) in south-east coastal Bangladesh. Based on this proposition, this study assesses the available ES and identifies the drivers responsible for ES changes, arguing for the application of social equity for resource conservation. The findings show that communities along Bangladesh’s south-eastern coast use several ES for food, medicine, income, livelihoods, and cultural heritage. However, this valuable ecosystem is currently experiencing numerous threats and stressors of anthropogenic and natural origin. In particular, large-scale development activities, driven by the blue growth agenda, and neoliberalism policy, pose a risk to the local communities by degrading coastal ecosystem services. Escaping this situation for coastal natural resource-dependent communities in Bangladesh will require a transformation in the governance structure. Implementing the Small-Scale Fisheries (SSF) Guidelines that call for initiating policy change to deliver social justice to small-scale fisheries would help to address coastal ecosystem service conservation in Bangladesh.
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36
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Guo F, Lee SY, Kainz MJ, Brett MT. Fatty acids as dietary biomarkers in mangrove ecosystems: Current status and future perspective. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 739:139907. [PMID: 32544684 DOI: 10.1016/j.scitotenv.2020.139907] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2020] [Revised: 05/27/2020] [Accepted: 05/31/2020] [Indexed: 06/11/2023]
Abstract
The paradigm that mangrove carbon supports secondary production in mangrove and adjacent habitats has been debated in recent years. Fatty acids (FA) are one of the classic biomarkers that have been frequently applied to track mangrove carbon pathways and assess trophic relationships. However, most previous studies did not evaluate the validity, potential and limitations of FA as biomarkers. The function and metabolism of long-chain polyunsaturated FA (LC-PUFA) in mangrove fauna have been largely ignored, and overlapping single FA biomarkers were widely used to infer dietary contributions from different sources. This review aims to systematically analyze and assess the application of FA biomarkers to dietary analyses in mangrove ecosystems, with a focus on basal food sources and their consumers. Our results show that basal food sources have distinctive FA profiles, with leaves and litter rich in alpha-linolenic acids (ALA, 18:3n-3), microphytobenthos rich in eicosapentaenoic acids (EPA, 20:5n-3) and suspended particulate organic matter (SPOM), or phytoplankton rich in docosahexaenoic acids (DHA, 22:6n-3). Most consumers contain high contents of LC-PUFA, particularly DHA and EPA, but very low levels of long-chain saturated FA (e.g., 22:0, 24:0, 26:0, 28:0), a biomarker of mangrove leaf litter. Bacterial FA biomarkers are present in all consumers. Four possible carbon pathways are identified and examined, i.e., benthic feeding on mangrove leaves and litter, benthic feeding on microphytobenthos, pelagic feeding on SPOM, and benthic and pelagic feeding on bacteria. Each pathway plays a different nutritional role for consumers, together providing a diversity of carbon sources. We recommend that in future (a) a wide range of basal diet sources should be sampled rather than just "visible" sources; (b) the unique FA characteristics of each diet source and consumer should be recognized with a focus on overall FA profiles and the application of multivariate statistics; (c) controlled feeding trials should be considered for keystone or functionally important consumers before selecting certain FA biomarkers to infer animal diets, and; (d) compound-specific stable isotope analysis should be applied to provide more insights into trophic relationships as well as the FA metabolic pathways in consumers.
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Affiliation(s)
- Fen Guo
- Simon F.S. Li Marine Science Laboratory, School of Life Sciences, The Chinese University of Hong Kong, Hong Kong, China.
| | - Shing Yip Lee
- Simon F.S. Li Marine Science Laboratory, School of Life Sciences, The Chinese University of Hong Kong, Hong Kong, China
| | - Martin J Kainz
- WasserCluster Lunz-Inter-University Centre for Aquatic Ecosystem Research, Lunz am See, Austria
| | - Michael T Brett
- Department of Civil and Environmental Engineering, University of Washington, Seattle, WA, United States of America
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37
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Lassalle G, Fabre S, Credoz A, Dubucq D, Elger A. Monitoring oil contamination in vegetated areas with optical remote sensing: A comprehensive review. JOURNAL OF HAZARDOUS MATERIALS 2020; 393:122427. [PMID: 32155523 DOI: 10.1016/j.jhazmat.2020.122427] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2019] [Revised: 02/11/2020] [Accepted: 02/28/2020] [Indexed: 06/10/2023]
Abstract
The monitoring of soil contamination deriving from oil and gas industry remains difficult in vegetated areas. Over the last decade, optical remote sensing has proved helpful for this purpose. By tracking alterations in vegetation biochemistry through its optical properties, multi- and hyperspectral remote sensing allow detecting and quantifying crude oil and petroleum products leaked following accidental leakages or bad cessation practices. Recent advances in this field have led to the development of various methods that can be applied either in the field using portable spectroradiometers or at large scale on airborne and satellite images. Experiments carried out under controlled conditions have largely contributed to identifying the most important factors influencing the detection of oil (plant species, mixture composition, etc.). In a perspective of operational use, an important effort is still required to make optical remote sensing a reliable tool for oil and gas companies. The current methods used on imagery should extend their scope to a wide range of contexts and their application to upcoming satellite-embedded hyperspectral sensors should be considered in future studies.
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Affiliation(s)
- Guillaume Lassalle
- Office National d'Études et de Recherches Aérospatiales (ONERA), Toulouse, France; TOTAL S.A., Pôle d'Études et de Recherches de Lacq, Lacq, France; EcoLab, Université de Toulouse, CNRS, INPT, UPS, Toulouse, France.
| | - Sophie Fabre
- Office National d'Études et de Recherches Aérospatiales (ONERA), Toulouse, France
| | - Anthony Credoz
- TOTAL S.A., Pôle d'Études et de Recherches de Lacq, Lacq, France
| | - Dominique Dubucq
- TOTAL S.A., Centre Scientifique et Technique Jean-Féger, Pau, France
| | - Arnaud Elger
- EcoLab, Université de Toulouse, CNRS, INPT, UPS, Toulouse, France
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38
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Kroon FJ, Berry KLE, Brinkman DL, Kookana R, Leusch FDL, Melvin SD, Neale PA, Negri AP, Puotinen M, Tsang JJ, van de Merwe JP, Williams M. Sources, presence and potential effects of contaminants of emerging concern in the marine environments of the Great Barrier Reef and Torres Strait, Australia. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 719:135140. [PMID: 31859059 DOI: 10.1016/j.scitotenv.2019.135140] [Citation(s) in RCA: 54] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2019] [Revised: 10/21/2019] [Accepted: 10/21/2019] [Indexed: 06/10/2023]
Abstract
Current policy and management for marine water quality in the Great Barrier Reef (GBR) in north-eastern Australia primarily focusses on sediment, nutrients and pesticides derived from diffuse source pollution related to agricultural land uses. In addition, contaminants of emerging concern (CECs) are known to be present in the marine environments of the GBR and the adjacent Torres Strait (TS). Current and projected agricultural, urban and industrial developments are likely to increase the sources and diversity of CECs being released into these marine ecosystems. In this review, we evaluate the sources, presence and potential effects of six different categories of CECs known to be present, or likely to be present, in the GBR and TS marine ecosystems. Specifically, we summarize available monitoring, source and effect information for antifouling paints; coal dust and particles; heavy/trace metals and metalloids; marine debris and microplastics; pharmaceuticals and personal care products (PPCPs); and petroleum hydrocarbons. Our study highlights the lack of (available) monitoring data for most of these CECs, and recommends: (i) the inclusion of all relevant environmental data into integrated databases for building marine baselines for the GBR and TS regions, and (ii) the implementation of local, targeted monitoring programs informed by predictive methods for risk prioritization. Further, our spatial representation of the known and likely sources of these CECs will contribute to future ecological risk assessments of CECs to the GBR and TS marine environments, including risks relative to those identified for sediment, nutrients and pesticides.
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Affiliation(s)
- Frederieke J Kroon
- Australian Institute of Marine Science, Townsville, QLD 4810, Australia.
| | - Kathryn L E Berry
- Australian Institute of Marine Science, Townsville, QLD 4810, Australia; James Cook University, Townsville, QLD 4810, Australia
| | - Diane L Brinkman
- Australian Institute of Marine Science, Townsville, QLD 4810, Australia
| | - Rai Kookana
- CSIRO Land and Water, Adelaide, SA 5000, Australia
| | - Frederic D L Leusch
- Australian Rivers Institute, School of Environment and Science, Griffith University, Gold Coast, QLD 4222, Australia
| | - Steven D Melvin
- Australian Rivers Institute, School of Environment and Science, Griffith University, Gold Coast, QLD 4222, Australia
| | - Peta A Neale
- Australian Rivers Institute, School of Environment and Science, Griffith University, Gold Coast, QLD 4222, Australia
| | - Andrew P Negri
- Australian Institute of Marine Science, Townsville, QLD 4810, Australia
| | - Marji Puotinen
- Australian Institute of Marine Science, Perth, WA 6009, Australia
| | - Jeffrey J Tsang
- Australian Institute of Marine Science, Darwin, NT 0811, Australia
| | - Jason P van de Merwe
- Australian Rivers Institute, School of Environment and Science, Griffith University, Gold Coast, QLD 4222, Australia
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39
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Yin Y, Zhu L, Guo T, Qiao X, Gan S, Chang X, Li X, Xia F, Xue Q. Microphone-like Cu-CAT-1 hierarchical structures with ultra-low oil adhesion for highly efficient oil/water separation. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2020.116688] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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40
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Onyena AP, Sam K. A review of the threat of oil exploitation to mangrove ecosystem: Insights from Niger Delta, Nigeria. Glob Ecol Conserv 2020. [DOI: 10.1016/j.gecco.2020.e00961] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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41
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Maity JP, Huang YH, Lin HF, Chen CY. Variation of Microbial Diversity in Catastrophic Oil Spill Area in Marine Ecosystem and Hydrocarbon Degradation of UCMs (Unresolved Complex Mixtures) by Marine Indigenous Bacteria. Appl Biochem Biotechnol 2020; 193:1266-1283. [PMID: 32445124 DOI: 10.1007/s12010-020-03335-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Accepted: 04/23/2020] [Indexed: 11/29/2022]
Abstract
The study targeted an assessment of microbial diversity during oil spill in the marine ecosystem (Kaohsiung port, Taiwan) and screened dominant indigenous bacteria for oil degradation, as well as UCM weathering. DO was detected lower and TDS/conductivity was observed higher in oil-spilled area, compared to the control, where a significant correlation (R2 = 1; P < 0.0001) was noticed between DO and TDS. The relative abundance (RA) of microbial taxa and diversities (> 90% similarity by NGS) were found higher in the boundary region of spilled-oily-water (site B) compared to the control (site C) and center of the oil spill area (site A) (BRA/diversity > CRA/diversity > ARA/diversity). The isolated indigenous bacteria, such as Staphylococcus saprophyticus (CYCTW1), Staphylococcus saprophyticus (CYCTW2), and Bacillus megaterium (CYCTW3) degraded the C10-C30 including UCM of oil, where Bacillus sp. are exhibited more efficient, which are applicable for environmental cleanup of the oil spill area. Thus, the marine microbial diversity changes due to oil spill and the marine microbial community play an important role to biodegrade the oil, besides restoring the catastrophic disorders through changing their diversity by ecological selection and adaptation process.
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Affiliation(s)
- Jyoti Prakash Maity
- Department of Earth and Environmental Sciences, National Chung Cheng University, 168 University Road, Ming-Shung, Chiayi County, 62102, Taiwan.,School of Civil Engineering and Surveying and International Centre for Applied Climate Science, University of Southern Queensland, Toowoomba, Australia
| | - Yi-Hsun Huang
- Department of Earth and Environmental Sciences, National Chung Cheng University, 168 University Road, Ming-Shung, Chiayi County, 62102, Taiwan
| | - Hsien-Feng Lin
- Department of Earth and Environmental Sciences, National Chung Cheng University, 168 University Road, Ming-Shung, Chiayi County, 62102, Taiwan
| | - Chien-Yen Chen
- Department of Earth and Environmental Sciences, National Chung Cheng University, 168 University Road, Ming-Shung, Chiayi County, 62102, Taiwan. .,Center for Innovative Research on Aging Society, AIM-HI, National Chung Cheng University, 168, University Rd., Min-Hsiung, Chiayi, 62102, Taiwan.
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42
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Worthington TA, Andradi-Brown DA, Bhargava R, Buelow C, Bunting P, Duncan C, Fatoyinbo L, Friess DA, Goldberg L, Hilarides L, Lagomasino D, Landis E, Longley-Wood K, Lovelock CE, Murray NJ, Narayan S, Rosenqvist A, Sievers M, Simard M, Thomas N, van Eijk P, Zganjar C, Spalding M. Harnessing Big Data to Support the Conservation and Rehabilitation of Mangrove Forests Globally. ACTA ACUST UNITED AC 2020. [DOI: 10.1016/j.oneear.2020.04.018] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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43
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Connolly RM, Connolly FN, Hayes MA. Oil spill from the Era: Mangroves taking eons to recover. MARINE POLLUTION BULLETIN 2020; 153:110965. [PMID: 32056860 DOI: 10.1016/j.marpolbul.2020.110965] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Revised: 02/05/2020] [Accepted: 02/05/2020] [Indexed: 06/10/2023]
Abstract
Mangroves are highly susceptible to oil exposure. Depending on the severity, oil exposure can result in initial defoliation and eventual recovery through to mass mortality and complete loss of habitat. Some aspects of the impact of oil on mangroves and their recovery are well studied, but the focus has been on short-term responses, and the understanding of the longer-term trajectory of mangrove recovery from oiling is very limited. Here, we combine field results from sampling in the two years following a significant oiling event, with analysis of canopy cover in aerial images from before the event to 26 years afterwards. Approximately 100 ha of a monospecific stand of Avicenna marina mangroves were oiled as a result of a spill from the Era tanker in Spencer Gulf in southern Australia in September 1992. While lightly oiled trees made a full recovery, trees in heavily oiled areas experienced mass defoliation and ultimately mortality within several months of the oiling event. An analysis of aerial images indicated that there was no recovery in heavily oiled areas for 10 years following the oiling event. Between 10 and 25 years, seedling establishment and growth saw canopy cover increase to 35% of pre-oiling cover within heavily oiled areas. Predictive modelling estimates that complete recovery of mangroves to pre-oiling cover will take 55 years (median prediction in 2047). Our findings indicate that although mangroves can recover following a heavy oiling event, the rate of recovery can be slow, with full recovery in the order of half a century, much longer than has previously been anticipated.
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Affiliation(s)
- Rod M Connolly
- Australian Rivers Institute - Coast & Estuaries, School of Environment & Science, Griffith University, Gold Coast 4222, Queensland, Australia.
| | - Finnian N Connolly
- Australian Rivers Institute - Coast & Estuaries, School of Environment & Science, Griffith University, Gold Coast 4222, Queensland, Australia; School of Biosciences, The University of Melbourne, Parkville 3010, Victoria, Australia
| | - Matthew A Hayes
- Australian Rivers Institute - Coast & Estuaries, School of Environment & Science, Griffith University, Gold Coast 4222, Queensland, Australia
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44
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Sardi SS, Qurban MA, Li W, Kadinjappalli KP, Manikandan PK, Hariri MM, Tawabini BS, Khalil AB, El-Askary H. Assessment of areas environmentally sensitive to oil spills in the western Arabian Gulf, Saudi Arabia, for planning and undertaking an effective response. MARINE POLLUTION BULLETIN 2020; 150:110588. [PMID: 31733902 DOI: 10.1016/j.marpolbul.2019.110588] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2019] [Revised: 09/05/2019] [Accepted: 09/09/2019] [Indexed: 06/10/2023]
Affiliation(s)
- Sudibyo S Sardi
- Department of Geosciences, College of Petroleum Engineering & Geosciences, King Fahd University of Petroleum & Minerals (KFUPM), Dhahran, 31261, Saudi Arabia
| | - Mohammed A Qurban
- Center for Environment & Water, Research Institute, King Fahd University of Petroleum & Minerals (KFUPM), Dhahran, 31261, Saudi Arabia; Department of Geosciences, College of Petroleum Engineering & Geosciences, King Fahd University of Petroleum & Minerals (KFUPM), Dhahran, 31261, Saudi Arabia
| | - Wenzhao Li
- Computational and Data Sciences Graduate Program, Schmid College of Science and Technology, Chapman University, Orange, 92867, CA, USA
| | - Krishnakumar P Kadinjappalli
- Center for Environment & Water, Research Institute, King Fahd University of Petroleum & Minerals (KFUPM), Dhahran, 31261, Saudi Arabia
| | - P Karuppasamy Manikandan
- Center for Environment & Water, Research Institute, King Fahd University of Petroleum & Minerals (KFUPM), Dhahran, 31261, Saudi Arabia.
| | - Mustafa M Hariri
- Department of Geosciences, College of Petroleum Engineering & Geosciences, King Fahd University of Petroleum & Minerals (KFUPM), Dhahran, 31261, Saudi Arabia
| | - Bassam S Tawabini
- Department of Geosciences, College of Petroleum Engineering & Geosciences, King Fahd University of Petroleum & Minerals (KFUPM), Dhahran, 31261, Saudi Arabia
| | - Amjad B Khalil
- Department of Life Sciences, College of Science, King Fahd University of Petroleum & Minerals (KFUPM), Dhahran, 31261, Saudi Arabia
| | - Hesham El-Askary
- Center of Excellence in Earth Systems Modeling & Observations, Chapman University, Orange, 92867, CA, USA; Schmid College of Science and Technology, Chapman University, Orange, 92867, CA, USA; Department of Environmental Sciences, Faculty of Science, Alexandria University, Moharem Bek, 21522, Alexandria, Egypt
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45
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Machado LF, de Assis Leite DC, da Costa Rachid CTC, Paes JE, Martins EF, Peixoto RS, Rosado AS. Tracking Mangrove Oil Bioremediation Approaches and Bacterial Diversity at Different Depths in an in situ Mesocosms System. Front Microbiol 2019; 10:2107. [PMID: 31572322 PMCID: PMC6753392 DOI: 10.3389/fmicb.2019.02107] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2019] [Accepted: 08/27/2019] [Indexed: 12/19/2022] Open
Abstract
In this study, oil spills were simulated in field-based mangrove mesocosms to compare the efficiency of bioremediation strategies and to characterize the presence of the alkB, ndo, assA, and bssA genes and the ecological structures of microbial communities in mangrove sediments at two different depths, (D1) 1–10 cm and (D2) 25–35 cm. The results indicated that the hydrocarbon degradation efficiency was higher in superficial sediment layers, although no differences in the hydrocarbon degradation rates or in the abundances of the alkB and ndo genes were detected among the tested bioremediation strategies at this depth. Samples from the deeper layer exhibited higher abundances of the analyzed genes, except for assA and bssA, which were not detected in our samples. For all of the treatments and depths, the most abundant phyla were Proteobacteria, Firmicutes and Bacteroidetes, with Gammaproteobacteria, Flavobacteriales and Clostridiales being the most common classes. The indicator species analysis (ISA) results showed strong distinctions among microbial taxa in response to different treatments and in the two collection depths. Our results indicated a high efficiency of the monitored natural attenuation (MNA) for oil consumption in the tested mangrove sediments, revealing the potential of this strategy for environmental decontamination and suggesting that environmental and ecological factors may select for specific bacterial populations in distinct niches.
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Affiliation(s)
- Laís Feitosa Machado
- Institute of Microbiology Paulo de Góes, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | | | | | - Jorge Eduardo Paes
- Research Center Leopoldo Américo Miguez de Mello, Rio de Janeiro, Brazil
| | - Edir Ferreira Martins
- Institute of Microbiology Paulo de Góes, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Raquel Silva Peixoto
- Institute of Microbiology Paulo de Góes, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil.,IMAM-AquaRio - Rio de Janeiro Aquarium Research Center, Rio de Janeiro, Brazil
| | - Alexandre Soares Rosado
- Institute of Microbiology Paulo de Góes, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil.,IMAM-AquaRio - Rio de Janeiro Aquarium Research Center, Rio de Janeiro, Brazil
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46
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Nwipie GN, Hart AI, Zabbey N, Sam K, Prpich G, Kika PE. Recovery of infauna macrobenthic invertebrates in oil-polluted tropical soft-bottom tidal flats: 7 years post spill. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:22407-22420. [PMID: 31154642 DOI: 10.1007/s11356-019-05352-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2018] [Accepted: 05/01/2019] [Indexed: 06/09/2023]
Abstract
Coastal oil spills constitute significant threat to biotic energy distribution, and biodiversity integrity amongst others. This study monitored the recovery of low-intertidal, soft-bottom infauna macrobenthic invertebrates in Bodo Creek intermittently over a 7-year period post oil spill. Samples were taken twice a month (spring and neap low tides) for 6 months (September 2015-February 2016) at sites previously studied (pre-spill baseline studies, 3-year and 5-year post-spill studies) for the effects of oil pollution using the same sampling methods used during initial studies of the same area. Comparatively, the initial studies reported Polychaeta as the dominant class against the dominant Crustacea reported in this 7-year post-spill study, indicating a change in the community structure of the study area. Infauna macro-invertebrate communities recorded showed an improvement (that is, increased species richness and number of individuals) over the initial 3-year and 5-year post-spill studies. However, relating the results to the initial baseline pre-spill studies, an annual average of 9.7% recovery rate was observed. Analysis of results showed that the total hydrocarbon content (THC) of the sediment remained high (90.08-12,184 mg/kg) but was markedly lower than levels observed during the initial post-spill study (6422-7186 mg/kg). Tidal flushing and biodegradation processes were deemed responsible for the reduction in THC. This study provides a rare dataset that describes the effects of oil pollution on a previously near-pristine estuarine environment in the tropics.
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Affiliation(s)
- Goodluck Nakaima Nwipie
- Department of Fisheries, Faculty of Agriculture, University of Port Harcourt, PMB 5323, East-West Road, Choba, Port Harcourt, Rivers State, Nigeria
| | - Aduabobo Ibitoru Hart
- Department of Animal and Environmental Biology, Faculty of Science, University of Port Harcourt, Port Harcourt, Nigeria
| | - Nenibarini Zabbey
- Department of Fisheries, Faculty of Agriculture, University of Port Harcourt, PMB 5323, East-West Road, Choba, Port Harcourt, Rivers State, Nigeria
- Environment and Conservation Unit, Centre for Environment, Human Rights and Development, Legacy Centre, Abuja Lane, Port Harcourt, Nigeria
| | - Kabari Sam
- Environment and Conservation Unit, Centre for Environment, Human Rights and Development, Legacy Centre, Abuja Lane, Port Harcourt, Nigeria.
- Department of Marine Environment and Pollution Control, Faculty of Environmental Management, Nigeria Maritime University, Okerenkoko, Warri, Delta State, Nigeria.
| | - George Prpich
- Department of Chemical Engineering, University of Virginia, Charlottesville, USA
| | - Philomina Ehiedu Kika
- Department of Animal and Environmental Biology, Faculty of Science, University of Port Harcourt, Port Harcourt, Nigeria
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Ubogu M, Odokuma LO, Akponah E. Enhanced rhizoremediation of crude oil-contaminated mangrove swamp soil using two wetland plants (Phragmites australis and Eichhornia crassipes). Braz J Microbiol 2019; 50:715-728. [PMID: 30993597 PMCID: PMC6863205 DOI: 10.1007/s42770-019-00077-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2018] [Accepted: 03/08/2019] [Indexed: 10/27/2022] Open
Abstract
Comparative studies of enhanced rhizoremediation with biostimulation and bioaugmentation techniques in remediation of oil-contaminated mangrove environment were investigated. Contaminated soils at 7190 mg/kg of oil were subjected to the following treatments: soil (S), soil + oil (SO), soil + oil + fertilizer (NPK) (SOF), soil + oil + fertilizer + microorganisms (SOFM), soil + oil + fertilizer + microorganisms + solarization (SOFMS) (triplicates): two sets planted with P. australis, E. crassipes, and one unplanted. These were studied comparatively for 120 days for culturable (aerobic, mesophilic) heterotrophic and hydrocarbon-utilizing microbial populations, and soil residual TPH. Results showed culturable heterotrophic and hydrocarbon-utilizing microbial populations and TPH loss in planted soils were consistently higher than those in unplanted receiving corresponding treatments (P ˂ 0.05). There were 44.4, 71.8, 74.7, and 67.5, and 50.5, 71.8, 82.3, and 71.8% reduction in residual TPH in soil planted with P. australis and E. crassipes respectively for treatments PSO, PSOF, PSOFM, and PSOFMS as against 20.0, 62.6, 67.5, and 67.5% losses in SO, SOF, SOFM, and SOFMS. Treatments PSOFM and SFOM recorded the highest TPH loss with daily residual TPH loss in the order as follows: E. crassipes (49.20 mg/kg/day) ˃ P. australis (44.64 mg/kg/day) ˃ unplanted soil (40.32 mg/kg/day). Enhanced rhizoremediation was more effective than biostimulation and bioaugmentation techniques.
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Affiliation(s)
- Monday Ubogu
- Department of Microbiology, Federal University of Agriculture Makurdi, Makurdi, Nigeria.
| | - Lucky O Odokuma
- Department of Microbiology, University of Port Harcourt, Port Harcourt, Nigeria
| | - Ejiro Akponah
- Department of Microbiology, Delta State University, Abraka, Nigeria
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48
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Gong B, Cao H, Peng C, Perčulija V, Tong G, Fang H, Wei X, Ouyang S. High-throughput sequencing and analysis of microbial communities in the mangrove swamps along the coast of Beibu Gulf in Guangxi, China. Sci Rep 2019; 9:9377. [PMID: 31253826 PMCID: PMC6599077 DOI: 10.1038/s41598-019-45804-w] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2018] [Accepted: 06/13/2019] [Indexed: 02/07/2023] Open
Abstract
Mangrove swamp is one of the world's richest and most productive marine ecosystems. This ecosystem also has a great ecological importance, but is highly susceptible to anthropogenic disturbances. The balance of mangrove ecosystem depends largely on the microbial communities in mangrove sediments. Thus, understanding how the mangrove microbial communities respond to spatial differences is essential for more accurate assessment of mangrove ecosystem health. To this end, we performed the first medium-distance (150 km) research on the biogeographic distribution of mangrove microbial communities. The hypervariable regions of 16S rRNA gene was sequenced by Illumina to compare the microbial communities in mangrove sediments collected from six locations (i.e. Zhenzhu harbor, Yuzhouping, Maowei Sea, Qinzhou harbor, Beihai city and Shankou) along the coastline of Beibu Gulf in Guangxi province, China. Collectively, Proteobacteria, Bacteroidetes, Chloroflexi, Actinobacteria, Parvarchaeota, Acidobacteria and Cyanobacteria were the predominant phyla in the mangrove sediments of this area. At genus level, the heat map of microbial communities reflected similarities between study sites and was in agreement with their biogeographic characteristics. Interestingly, the genera Desulfococcus, Arcobacter, Nitrosopumilus and Sulfurimonas showed differences in abundance between study sites. Furthermore, the principal component analysis (PCA) and unweighted UniFrac cluster tree of beta diversity were used to study the biogeographic diversity of the microbial communities. Relatively broader variation of microbial communities was found in Beihai city and Qinzhou harbour, suggesting that environmental condition and historical events may play an important role in shaping the bacterial communities as well. This is the first report on medium-distance range distribution of bacteria in the mangrove swamp ecosystem. Our data is valuable for monitoring and evaluation of the impact of human activity on mangrove habitats from the perspective of microbiome.
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Affiliation(s)
- Bin Gong
- Guangxi Key Laboratory of Marine Disaster in the Beibu Gulf, Beibu Gulf University, Qinzhou, 535000, China.,The Key Laboratory of Innate Immune Biology of Fujian Province, Provincial University Key Laboratory of Cellular Stress Response and Metabolic Regulation, Biomedical Research Center of South China, Key Laboratory of OptoElectronic Science and Technology for Medicine of Ministry of Education, College of Life Sciences, Fujian Normal University, Fuzhou, 350117, China
| | - Hongming Cao
- Guangxi Key Laboratory of Marine Disaster in the Beibu Gulf, Beibu Gulf University, Qinzhou, 535000, China
| | - Chunyan Peng
- Guangxi Key Laboratory of Marine Disaster in the Beibu Gulf, Beibu Gulf University, Qinzhou, 535000, China
| | - Vanja Perčulija
- The Key Laboratory of Innate Immune Biology of Fujian Province, Provincial University Key Laboratory of Cellular Stress Response and Metabolic Regulation, Biomedical Research Center of South China, Key Laboratory of OptoElectronic Science and Technology for Medicine of Ministry of Education, College of Life Sciences, Fujian Normal University, Fuzhou, 350117, China
| | - Guixiang Tong
- Guangxi Key Laboratory of Aquatic Genetic Breeding and Healthy Aquaculture, Academy of Fishery Sciences, Nanning, Guangxi, 530021, China
| | - Huaiyi Fang
- Guangxi Key Laboratory of Marine Disaster in the Beibu Gulf, Beibu Gulf University, Qinzhou, 535000, China
| | - Xinxian Wei
- Guangxi Key Laboratory of Aquatic Genetic Breeding and Healthy Aquaculture, Academy of Fishery Sciences, Nanning, Guangxi, 530021, China.
| | - Songying Ouyang
- The Key Laboratory of Innate Immune Biology of Fujian Province, Provincial University Key Laboratory of Cellular Stress Response and Metabolic Regulation, Biomedical Research Center of South China, Key Laboratory of OptoElectronic Science and Technology for Medicine of Ministry of Education, College of Life Sciences, Fujian Normal University, Fuzhou, 350117, China.
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49
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Garcia MR, Cattani AP, da Cunha Lana P, Figueira RCL, Martins CC. Petroleum biomarkers as tracers of low-level chronic oil contamination of coastal environments: A systematic approach in a subtropical mangrove. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2019; 249:1060-1070. [PMID: 31146312 DOI: 10.1016/j.envpol.2019.03.006] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2018] [Revised: 03/01/2019] [Accepted: 03/03/2019] [Indexed: 06/09/2023]
Abstract
Petroleum biomarkers (hopanes, terpanes and steranes) are frequently assessed in estuarine sediments as tracers of oil input. In order to compare distinct patterns of hydrocarbon accumulation in mudflats, salt marsh and mangrove, sediments from two transects (control and impacted areas) were sampled in Paranaguá Bay, SW Atlantic. Concentrations of n-alkanes, polycyclic aromatic hydrocarbons (PAHs) and petroleum biomarkers (hopanes, terpanes and steranes) were determined, as well as bulk parameters (TOC, grain size and δ13C). N-alkanes concentrations were similar between control and impacted sites (respectively, 3.03 ± 1.20 μg g-1 and 4.11 ± 3.02 μg g-1) and reflected a high biogenic input. Conversely, PAHs and petroleum biomarker concentrations were three to six times higher in impacted site than the control site (respectively, 60.4 ± 23.3 ng g-1 and 22.0 ± 25.0 ng g-1 for PAHs and 197.7 ± 51.8 ng g-1 and 40.2 ± 32. ng g-1 for hopanes). Despite these differences, concentrations were lower than those reported for highly impacted areas worldwide. Diagnostic ratios and hydrocarbon parameters (e.g. total PAHs and total petroleum biomarkers) helped to distinguish human impact in the ecological zones, suggesting different sources and/or levels of weathering, confirmed by ANOVA tests. TOC played a fundamental role to the concentration of hydrocarbons, showing similar distributions along the transects. Petroleum biomarkers could clearly indicate the preferential sites of deposition and assign different levels of anthropic contamination by hydrocarbons, thus providing clear information about the chronic petroleum pollution in coastal sediments.
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Affiliation(s)
- Marina Reback Garcia
- Programa de Pós-Graduação em Sistemas Costeiros e Oceânicos (PGSISCO), Universidade Federal do Paraná, Caixa Postal 61, 83255-976, Pontal do Paraná, PR, Brazil.
| | - André Pereira Cattani
- Centro de Estudos do Mar, Universidade Federal do Paraná, Caixa Postal 61, 83255-976, Pontal do Paraná, PR, Brazil
| | - Paulo da Cunha Lana
- Centro de Estudos do Mar, Universidade Federal do Paraná, Caixa Postal 61, 83255-976, Pontal do Paraná, PR, Brazil
| | - Rubens César Lopes Figueira
- Instituto Oceanográfico da Universidade de São Paulo, Praça do Oceanográfico, 191, 05508-900, São Paulo, SP, Brazil
| | - César C Martins
- Centro de Estudos do Mar, Universidade Federal do Paraná, Caixa Postal 61, 83255-976, Pontal do Paraná, PR, Brazil.
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50
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Van der Stocken T, Wee AKS, De Ryck DJR, Vanschoenwinkel B, Friess DA, Dahdouh-Guebas F, Simard M, Koedam N, Webb EL. A general framework for propagule dispersal in mangroves. Biol Rev Camb Philos Soc 2019; 94:1547-1575. [PMID: 31058451 DOI: 10.1111/brv.12514] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2018] [Revised: 03/19/2019] [Accepted: 03/27/2019] [Indexed: 12/29/2022]
Abstract
Dispersal allows species to shift their distributions in response to changing climate conditions. As a result, dispersal is considered a key process contributing to a species' long-term persistence. For many passive dispersers, fluid dynamics of wind and water fuel these movements and different species have developed remarkable adaptations for utilizing this energy to reach and colonize suitable habitats. The seafaring propagules (fruits and seeds) of mangroves represent an excellent example of such passive dispersal. Mangroves are halophytic woody plants that grow in the intertidal zones along tropical and subtropical shorelines and produce hydrochorous propagules with high dispersal potential. This results in exceptionally large coastal ranges across vast expanses of ocean and allows species to shift geographically and track the conditions to which they are adapted. This is particularly relevant given the challenges presented by rapid sea-level rise, higher frequency and intensity of storms, and changes in regional precipitation and temperature regimes. However, despite its importance, the underlying drivers of mangrove dispersal have typically been studied in isolation, and a conceptual synthesis of mangrove oceanic dispersal across spatial scales is lacking. Here, we review current knowledge on mangrove propagule dispersal across the various stages of the dispersal process. Using a general framework, we outline the mechanisms and ecological processes that are known to modulate the spatial patterns of mangrove dispersal. We show that important dispersal factors remain understudied and that adequate empirical data on the determinants of dispersal are missing for most mangrove species. This review particularly aims to provide a baseline for developing future research agendas and field campaigns, filling current knowledge gaps and increasing our understanding of the processes that shape global mangrove distributions.
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Affiliation(s)
- Tom Van der Stocken
- Earth Science Section, Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, 91109, U.S.A.,Radar Science and Engineering Section, Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, 91109, U.S.A.,Ecology and Biodiversity, Vrije Universiteit Brussel, Brussels, 1050, Belgium
| | - Alison K S Wee
- Department of Biological Sciences, National University of Singapore, Singapore, 117543, Singapore.,Key Laboratory of Forest Ecology and Conservation, College of Forestry, Guangxi University, Nanning, Guangxi, 530004, China
| | - Dennis J R De Ryck
- Ecology and Biodiversity, Vrije Universiteit Brussel, Brussels, 1050, Belgium
| | | | - Daniel A Friess
- Department of Geography, National University of Singapore, Singapore, 117570, Singapore
| | - Farid Dahdouh-Guebas
- Ecology and Biodiversity, Vrije Universiteit Brussel, Brussels, 1050, Belgium.,Systems Ecology and Resource Management, Université Libre de Bruxelles, Brussels, 1050, Belgium
| | - Marc Simard
- Radar Science and Engineering Section, Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, 91109, U.S.A
| | - Nico Koedam
- Ecology and Biodiversity, Vrije Universiteit Brussel, Brussels, 1050, Belgium
| | - Edward L Webb
- Department of Biological Sciences, National University of Singapore, Singapore, 117543, Singapore
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