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Thomson T, Ellis JI, Fusi M, Prinz N, Lundquist CJ, Bury SJ, Shankar U, Cary SC, Pilditch CA. Effects of catchment land use on temperate mangrove forests. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 940:173579. [PMID: 38823713 DOI: 10.1016/j.scitotenv.2024.173579] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2023] [Revised: 05/25/2024] [Accepted: 05/25/2024] [Indexed: 06/03/2024]
Abstract
Human land use changes are threatening the integrity and health of coastal ecosystems worldwide. Intensified land use for anthropogenic purposes increases sedimentation rates, pollutants, and nutrient concentrations into adjacent coastal areas, often with detrimental effects on marine life and ecosystem functioning. However, how these factors interact to influence ecosystem health in mangrove forests is poorly understood. This study investigates the effects of catchment human land use on mangrove forest architecture and sedimentary attributes at a landscape-scale. Thirty sites were selected along a gradient of human land use within a narrow latitudinal range, to minimise the effects of varying climatic conditions. Land use was quantified using spatial analysis tools with existing land use databases (LCDB5). Twenty-six forest architectural and sedimentary variables were collected from each site. The results revealed a significant effect of human land use on ten out of 26 environmental variables. Eutrophication, characterised by changes in redox potential, pH, and sediment nutrient concentrations, was strongly associated with increasing human land use. The δ15N values of sediments and leaves also indicated increased anthropogenic nitrogen input. Furthermore, the study identified a positive correlation between human land use and tree density, indicating that increased nutrient delivery from catchments contributes to enhanced mangrove growth. Propagule and seedling densities were also positively correlated with human land use, suggesting potential recruitment success mechanisms. This research underpins the complex interactions between human land use and mangrove ecosystems, revealing changes in carbon dynamics, potential alterations in ecosystem services, and a need for holistic management approaches that consider the interconnectedness of species and their environment. These findings provide essential insights for regional ecosystem models, coastal management, and restoration strategies to address the impacts of human pressures on temperate mangrove forests, even in estuaries that may be relatively healthy.
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Affiliation(s)
- Timothy Thomson
- University of Waikato, School of Science, Tauranga, New Zealand.
| | - Joanne I Ellis
- University of Waikato, School of Science, Tauranga, New Zealand
| | - Marco Fusi
- Dove Marine Laboratory, School of Natural and Environmental Sciences, Newcastle University, Newcastle-upon-Tyne 1NE 7RU, United Kingdom
| | - Natalie Prinz
- University of Waikato, School of Science, Tauranga, New Zealand
| | - Carolyn J Lundquist
- National Institute of Water and Atmospheric Research, Hamilton, New Zealand; School of Environment, University of Auckland, Auckland, New Zealand
| | - Sarah J Bury
- National Institute of Water and Atmospheric Research, Wellington, New Zealand
| | - Ude Shankar
- National Institute of Water and Atmospheric Research, Christchurch, New Zealand
| | - S Craig Cary
- School of Science, University of Waikato, Hamilton, New Zealand
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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: 2] [Impact Index Per Article: 2.0] [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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3
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Caliani I, Cannicci S, Pretti C, Baratti M, Contini G, Vitale M, Casini S, Fossi MC, Iannucci A, Fratini S. A multidisciplinary integrated approach using Pachygrapsus marmoratus to assess the impact of port activities on mediterranean marine protected areas. CHEMOSPHERE 2023; 312:137129. [PMID: 36356813 DOI: 10.1016/j.chemosphere.2022.137129] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Revised: 10/06/2022] [Accepted: 10/31/2022] [Indexed: 06/16/2023]
Abstract
The establishment of marine protected areas is considered the main global strategy to halt the loss of marine biodiversity. Since most of marine areas are open systems, this form of habitat protection cannot prevent their contamination due to human activities performed outside of their borders. Innovative approaches to assess the health status of protected marine habitats are therefore needed. Here we developed a multidisciplinary approach that combines ecological characteristics, bioaccumulation of inorganic and organic pollutants, cell damage (micronuclei frequency, nuclear alterations and LPO) and enzymatic (AChE, CAT, IDH, LDH, GST and CAT) markers focused on an intertidal brachyuran crab, Pachygrapsus marmoratus, to assess the impacts of contaminant exposure on Mediterranean coastal habitats. As study sites we selected two protected areas and two sites within industrial ports of the Ligurian Sea. Our results showed that the selected crab species is an excellent bioindicator. Individuals collected in sites with the highest levels of heavy metal pollution showed the highest signals of stress responses at both cellular and enzymatic levels, coupled with a high incidence of the parasite Sacculina carcini, a signal of impairment of their standard development and reproduction cycle. We could also prove that one of the selected marine protected areas showed the same intensity of impact as its adjacent port site. Our multidisciplinary approach proved to be a valuable tool to assess the environmental quality and health of protected and disturbed Mediterranean coastal environments and to inform efficient management and protection schemes for such habitats.
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Affiliation(s)
- Ilaria Caliani
- Department of Physical, Earth and Environmental Sciences, University of Siena, Via Mattioli 4, 53100 Siena, Italy.
| | - Stefano Cannicci
- Department of Biology, University of Florence, Via Madonna Del Piano 6 - 50019 Sesto Fiorentino Italy; The Swire Institute of Marine Science and Area of Ecology and Biodiversity, School of Biological Sciences, The University of Hong Kong, Hong Kong SAR, PR China.
| | - Carlo Pretti
- Interuniversity Consortium of Marine Biology and Applied Ecology "G. Bacci" (CIBM), Viale N. Sauro 4, Livorno, I-57128, Italy; Department of Veterinary Sciences, University of Pisa, Viale Delle Piagge 2, Pisa, I-56124, Italy.
| | - Mariella Baratti
- Institute of Biosciences and Bioresources, IBBR-CNR, Via Madonna Del Piano 10, Sesto Fiorentino, (FI), I-50019, Italy.
| | - Ginevra Contini
- Department of Biology, University of Florence, Via Madonna Del Piano 6 - 50019 Sesto Fiorentino Italy.
| | - Matteo Vitale
- Department of Physical, Earth and Environmental Sciences, University of Siena, Via Mattioli 4, 53100 Siena, Italy.
| | - Silvia Casini
- Department of Physical, Earth and Environmental Sciences, University of Siena, Via Mattioli 4, 53100 Siena, Italy.
| | - Maria Cristina Fossi
- Department of Physical, Earth and Environmental Sciences, University of Siena, Via Mattioli 4, 53100 Siena, Italy.
| | - Alessio Iannucci
- Department of Biology, University of Florence, Via Madonna Del Piano 6 - 50019 Sesto Fiorentino Italy.
| | - Sara Fratini
- Department of Biology, University of Florence, Via Madonna Del Piano 6 - 50019 Sesto Fiorentino Italy.
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Marasco R, Michoud G, Sefrji FO, Fusi M, Antony CP, Seferji KA, Barozzi A, Merlino G, Daffonchio D. The identification of the new species Nitratireductor thuwali sp. nov. reveals the untapped diversity of hydrocarbon-degrading culturable bacteria from the arid mangrove sediments of the Red Sea. Front Microbiol 2023; 14:1155381. [PMID: 37200916 PMCID: PMC10185800 DOI: 10.3389/fmicb.2023.1155381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Accepted: 04/04/2023] [Indexed: 05/20/2023] Open
Abstract
Introduction The geological isolation, lack of freshwater inputs and specific internal water circulations make the Red Sea one of the most extreme-and unique-oceans on the planet. Its high temperature, salinity and oligotrophy, along with the consistent input of hydrocarbons due to its geology (e.g., deep-sea vents) and high oil tankers traffic, create the conditions that can drive and influence the assembly of unique marine (micro)biomes that evolved to cope with these multiple stressors. We hypothesize that mangrove sediments, as a model-specific marine environment of the Red Sea, act as microbial hotspots/reservoirs of such diversity not yet explored and described. Methods To test our hypothesis, we combined oligotrophic media to mimic the Red Sea conditions and hydrocarbons as C-source (i.e., crude oil) with long incubation time to allow the cultivation of slow-growing environmentally (rare or uncommon) relevant bacteria. Results and discussion This approach reveals the vast diversity of taxonomically novel microbial hydrocarbon degraders within a collection of a few hundred isolates. Among these isolates, we characterized a novel species, Nitratireductor thuwali sp. nov., namely, Nit1536T. It is an aerobic, heterotrophic, Gram-stain-negative bacterium with optimum growth at 37°C, 8 pH and 4% NaCl, whose genome and physiological analysis confirmed the adaptation to extreme and oligotrophic conditions of the Red Sea mangrove sediments. For instance, Nit1536T metabolizes different carbon substrates, including straight-chain alkanes and organic acids, and synthesizes compatible solutes to survive in salty mangrove sediments. Our results showed that the Red Sea represent a source of yet unknown novel hydrocarbon degraders adapted to extreme marine conditions, and their discovery and characterization deserve further effort to unlock their biotechnological potential.
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Baratti M, Pinosio S, Gori M, Biricolti S, Chini G, Fratini S, Cannicci S, Caliani I, Oliva M, De Marchi L, Pretti C. Differential gene expression and chemical patterns of an intertidal crab inhabiting a polluted port and an adjacent marine protected area. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 822:153463. [PMID: 35101492 DOI: 10.1016/j.scitotenv.2022.153463] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Revised: 12/14/2021] [Accepted: 01/23/2022] [Indexed: 06/14/2023]
Abstract
The acquisition of data to safeguard marine protected areas located close to ports is important in order to develop plans that allow effective protection from pollution as well as sustainable development of the port. The area Secche della Meloria is a Marine Protected Area (MPA-MEL) three miles from Livorno Harbour (LH), which is characterized by a long history of pollution. Here we studied the bioaccumulation and transcriptomic patterns of the marbled crab, Pachygrapsus marmoratus (Fabricius, 1787) (Crustacea; Brachyura, Grapsidae), inhabiting the two selected sites. Results showed that the two crab populations are significantly different in their chemical composition of trace elements and Polyciclic Aromatic Hydrocarbons (PAHs), and gene expression patterns (1280 DEGs). Enrichment analysis indicated that crabs at LH had the highest stress response genes, and they were associated with higher levels of bioaccumulation detected in body tissues. We are confident that the significant differential gene expression profiles observed between crabs, characterized by significant chemical differences, is associated with responses to contaminant exposure.
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Affiliation(s)
- Mariella Baratti
- Institute of Biosciences and Bioresources, IBBR-CNR, Sesto Fiorentino I-50019, Italy.
| | - Sara Pinosio
- Institute of Biosciences and Bioresources, IBBR-CNR, Sesto Fiorentino I-50019, Italy; Institute of Applied Genomics IGA-CNR, Udine I-33100, Italy
| | - Massimo Gori
- Department of Agriculture, Food, Environment and Forestry (DAGRI), University of Florence, Firenze I-50144, Italy
| | - Stefano Biricolti
- Department of Agriculture, Food, Environment and Forestry (DAGRI), University of Florence, Firenze I-50144, Italy
| | - Giacomo Chini
- Department of Biology, University of Florence, Sesto Fiorentino I-5001, Italy
| | - Sara Fratini
- Department of Biology, University of Florence, Sesto Fiorentino I-5001, Italy
| | - Stefano Cannicci
- Department of Biology, University of Florence, Sesto Fiorentino I-5001, Italy; The Swire Institute of Marine Science and Area of Ecology and Biodiversity, School of Biological Sciences, The University of Hong Kong, Hong Kong SAR, PR China
| | - Ilaria Caliani
- Department of Physical, Earth and Environmental Sciences, University of Siena, Siena I-53100, Italy
| | - Matteo Oliva
- Interuniversity Consortium of Marine Biology "G. Bacci, CIBM ", Livorno I-57128, Italy
| | - Lucia De Marchi
- Interuniversity Consortium of Marine Biology "G. Bacci, CIBM ", Livorno I-57128, Italy; Departamento de Biologia e CESAM, Universidade de Aveiro, Aveiro 3810-193, Portugal
| | - Carlo Pretti
- Interuniversity Consortium of Marine Biology "G. Bacci, CIBM ", Livorno I-57128, Italy; Department of Veterinary Sciences, University of Pisa, Pisa I-56124, Italy
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Girones L, Oliva AL, Negrin VL, Marcovecchio JE, Arias AH. Persistent organic pollutants (POPs) in coastal wetlands: A review of their occurrences, toxic effects, and biogeochemical cycling. MARINE POLLUTION BULLETIN 2021; 172:112864. [PMID: 34482253 DOI: 10.1016/j.marpolbul.2021.112864] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2021] [Revised: 08/10/2021] [Accepted: 08/12/2021] [Indexed: 06/13/2023]
Abstract
Coastal wetlands, such as mangroves, seagrass beds, and salt marshes, are highly threatened by increasing anthropic pressures, including chemical pollution. Persistent organic pollutants (POPs) have attracted attention in these particularly vulnerable ecosystems, due to their bioaccumulative, pervasive, and ecotoxic behavior. This article reviews and summarizes available information regarding current levels, biogeochemical cycling, and effects of POPs on coastal wetlands. Sediment POP levels were compared with international quality guidelines, revealing many areas where compounds could cause damage to biota. Despite this, toxicological studies on some coastal wetland plants and microorganisms showed a high tolerance to those levels. These taxonomic groups are likely to play a key role in the cycling of the POPs, with an active role in their accumulation, immobilization, and degradation. Toxicity and biogeochemical processes varied markedly along three main axes; namely species, environmental conditions, and type of pollutant. While more focused research on newly and unintentionally produced POPs is needed, mainly in salt marshes and seagrass beds, with the information available so far, the environmental behavior, spatial distribution, and toxicity level of the studied POPs showed similar patterns across the three studied ecosystems.
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Affiliation(s)
- Lautaro Girones
- Instituto Argentino de Oceanografía (IADO - CONICET/UNS), Camino La Carrindanga km 7.5, 8000 Bahía Blanca, Argentina.
| | - Ana L Oliva
- Instituto Argentino de Oceanografía (IADO - CONICET/UNS), Camino La Carrindanga km 7.5, 8000 Bahía Blanca, Argentina
| | - Vanesa L Negrin
- Instituto Argentino de Oceanografía (IADO - CONICET/UNS), Camino La Carrindanga km 7.5, 8000 Bahía Blanca, Argentina; Departamento de Biología, Bioquímica y Farmacia, Universidad Nacional del Sur, Bahía Blanca, Argentina
| | - Jorge E Marcovecchio
- Instituto Argentino de Oceanografía (IADO - CONICET/UNS), Camino La Carrindanga km 7.5, 8000 Bahía Blanca, Argentina; Universidad Tecnológica Nacional (UTN)-FRBB, Bahía Blanca, Argentina; Universidad FASTA, Mar del Plata, Argentina
| | - Andrés H Arias
- Instituto Argentino de Oceanografía (IADO - CONICET/UNS), Camino La Carrindanga km 7.5, 8000 Bahía Blanca, Argentina; Departamento de Química, Universidad Nacional del Sur, Bahía Blanca, Argentina
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Tong T, Li R, Chai M, Wang Q, Yang Y, Xie S. Metagenomic analysis of microbial communities continuously exposed to Bisphenol A in mangrove rhizosphere and non-rhizosphere soils. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 792:148486. [PMID: 34465064 DOI: 10.1016/j.scitotenv.2021.148486] [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: 04/05/2021] [Revised: 05/31/2021] [Accepted: 06/12/2021] [Indexed: 06/13/2023]
Abstract
Bisphenol A (BPA) is widely distributed in littoral zones and may cause adverse impacts on mangrove ecosystem. Biodegradation and phytoremediation are two primary processes for BPA dissipation in mangrove soils. However, the rhizosphere effects of different mangrove species on BPA elimination are still unresolved. In this study, three typical mangrove seedlings, namely Avicennia marina, Bruguiera gymnorrhiza (L.) and Aegiceras corniculatum, were cultivated in soil microcosms for four months and then subjected to 28-day continuous BPA amendment. Un-planted soil microcosms (as control) were also set up. The BPA residual rates and root exudates were monitored, and the metabolic pathways as well as functional microbial communities were also investigated to decipher the rhizosphere effects based on metagenomic analysis. The BPA residual rates in all planted soils were significantly lower than that in un-planted soil on day 7. Both plantation and BPA dosage had significant effects on bacterial abundance. A distinct separation of microbial structure was found between planted and un-planted soil microcosms. Genera Pseudomonas and Lutibacter got enriched with BPA addition and may play important roles in BPA biodegradation. The shifts in bacterial community structure upon BPA addition were different among the microcosms with different mangrove species. Genus Novosphingobium increased in Avicennia marina and Bruguiera gymnorrhiza (L.) rhizosphere soils but decreased in Aegiceras corniculatum rhizosphere soil. Based on KEGG annotation and binning analysis, the proposal of BPA degradation pathways and the quantification of relevant functional genes were achieved. The roles of Pseudomonas and Novosphingobium may differ in lower BPA degradation pathways. The quantity variation patterns of functional genes during the 28-day BPA amendment were different among soil microcosms and bacterial genera.
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Affiliation(s)
- Tianli Tong
- State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing 100871, China
| | - Ruili Li
- School of Environmental and Energy, Shenzhen Graduate School of Peking University, Shenzhen 518055, Guangdong, China.
| | - Minwei Chai
- School of Environmental and Energy, Shenzhen Graduate School of Peking University, Shenzhen 518055, Guangdong, China
| | - Qian Wang
- School of Environmental and Energy, Shenzhen Graduate School of Peking University, Shenzhen 518055, Guangdong, China
| | - Yuyin Yang
- State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing 100871, China
| | - Shuguang Xie
- State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing 100871, China; School of Environmental and Energy, Shenzhen Graduate School of Peking University, Shenzhen 518055, Guangdong, China.
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Souza MRR, Suzarte JS, Carmo LO, Santos E, Soares LS, Júnior ARV, Santos LGGV, Krause LC, Damasceno FC, Frena M, Alexandre MR. Assessment of polycyclic aromatic hydrocarbons in three environmental components from a tropical estuary in Northeast Brazil. MARINE POLLUTION BULLETIN 2021; 171:112726. [PMID: 34343757 DOI: 10.1016/j.marpolbul.2021.112726] [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: 12/10/2020] [Revised: 07/07/2021] [Accepted: 07/12/2021] [Indexed: 06/13/2023]
Abstract
The evaluation of occurrence, risk quotient (RQ), bioaccumulation factor (BAF), and sources of PAH was conducted in Sergipe-Poxim estuarine system. PAH distribution that ranged from 7.1 to 30.9 ng L-1 (surface water, SW), 5.4 to 19.5 ng g-1 (sediment, S), and 4.3 to 18.1 ng g-1 (oyster, O), characterized the environment with low contamination; 2-3 (SW), 5-6 (S), and 4 (O) PAH rings accounted for 54.5%, 68.7%, and 87.7%, respectively, along with naphthalene (SW), dibenzo(a,h)anthracene (S), and pyrene (O) as the prevailing compounds. PCA suggested the predominance of particular groups related to SW (LMW-PAH), S (HMW-PAH), and O (pyrene and fluoranthene). Furthermore, one sample of O presented a high PAH bioavailability as shown through the BAF, with emphasis on pyrene (BAF = 26.8). The RQ showed a low to moderate range in SW and S; hence, in-depth information about the possible toxic effect in organisms of this region is required.
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Affiliation(s)
- Michel R R Souza
- Tiradentes University, Industrial Biotechnology Graduate Program, Aracaju, Sergipe SE 49032-490, Brazil.
| | - Jaiane S Suzarte
- Federal University of Sergipe, Chemistry Department, São Cristóvão, Sergipe SE 49100-000, Brazil
| | - Laiane O Carmo
- Federal University of Sergipe, Chemistry Department, São Cristóvão, Sergipe SE 49100-000, Brazil
| | - Ewerton Santos
- Brown University, Department of Earth, Environmental and Planetary Science, Providence, RI 02912, United States of America
| | - Laiane S Soares
- Federal University of Sergipe, Chemistry Department, São Cristóvão, Sergipe SE 49100-000, Brazil
| | - Antônio R V Júnior
- Federal University of Sergipe, Chemistry Department, São Cristóvão, Sergipe SE 49100-000, Brazil
| | - Lukas G G V Santos
- Sergipe Technology Research Institute, Aracaju, Sergipe, SE 49020-380, Brazil
| | - Laiza C Krause
- Tiradentes University, Industrial Biotechnology Graduate Program, Aracaju, Sergipe SE 49032-490, Brazil
| | - Flaviana C Damasceno
- Federal University of Sergipe, Chemistry Department, São Cristóvão, Sergipe SE 49100-000, Brazil
| | - Morgana Frena
- Federal University of Santa Catarina, Chemistry Department, Campus Universitário Trindade, Florianópolis, Santa Catarina SC 88040-900, Brazil
| | - Marcelo R Alexandre
- Federal University of Sergipe, Chemistry Department, São Cristóvão, Sergipe SE 49100-000, Brazil; Brown University, Department of Earth, Environmental and Planetary Science, Providence, RI 02912, United States of America
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A functional analysis reveals extremely low redundancy in global mangrove invertebrate fauna. Proc Natl Acad Sci U S A 2021; 118:2016913118. [PMID: 34312251 PMCID: PMC8364210 DOI: 10.1073/pnas.2016913118] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Global mangrove deforestation and degradation drive the loss of the associated invertebrate fauna vital to ecosystem services. The functional diversity and resilience of this fauna has not been assessed. We show that even small mangrove patches host functionally diverse faunal assemblages and can act as biodiversity reservoirs. However, globally, functional redundancy of mangrove invertebrates (i.e., the average number of species performing a similar functional role in an assemblage) is extremely low, except in Southeast Asia. Thus, even a modest local loss of invertebrate diversity will have significant negative consequences for mangrove functionality and resilience. Current approaches to assess threats to mangroves heavily rely on loss in areal extent, but our results suggest that loss of function may be more vulnerable. Deforestation results in habitat fragmentation, decreasing diversity, and functional degradation. For mangroves, no data are available on the impact of deforestation on the diversity and functionality of the specialized invertebrate fauna, critical for their functioning. We compiled a global dataset of mangrove invertebrate fauna comprising 364 species from 16 locations, classified into 64 functional entities (FEs). For each location, we calculated taxonomic distinctness (Δ+), functional richness (FRi), functional redundancy (FRe), and functional vulnerability (FVu) to assess functional integrity. Δ+ and FRi were significantly related to air temperature but not to geomorphic characteristics, mirroring the global biodiversity anomaly of mangrove trees. Neither of those two indices was linked to forest area, but both sharply decreased in human-impacted mangroves. About 60% of the locations showed an average FRe < 2, indicating that most of the FEs comprised one species only. Notable exceptions were the Eastern Indian Ocean and west Pacific Ocean locations, but also in this region, 57% of the FEs had no redundancy, placing mangroves among the most vulnerable ecosystems on the planet. Our study shows that despite low redundancy, even small mangrove patches host truly multifunctional faunal assemblages, ultimately underpinning their services. However, our analyses also suggest that even a modest local loss of invertebrate diversity could have significant negative consequences for many mangroves and cascading effects for adjacent ecosystems. This pattern of faunal-mediated ecosystem functionality is crucial for assessing the vulnerability of mangrove forests to anthropogenic impact and provides an approach to planning their effective conservation and restoration.
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Yoon SJ, Hong S, Kim HG, Lee J, Kim T, Kwon BO, Kim J, Ryu J, Khim JS. Macrozoobenthic community responses to sedimentary contaminations by anthropogenic toxic substances in the Geum River Estuary, South Korea. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 763:142938. [PMID: 33138998 DOI: 10.1016/j.scitotenv.2020.142938] [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: 07/31/2020] [Revised: 09/22/2020] [Accepted: 10/06/2020] [Indexed: 06/11/2023]
Abstract
We investigated the sedimentary pollution by persistent toxic substances (PTSs) and their potential impacts on the macrobenthic faunal community in the Geum River Estuary, South Korea. Sediment and benthic macrofauna samples were collected from eight sites every two months during the period of February to December in 2015. Target PTSs encompassed metals (Cd, Cr, Cu, Hg, Ni, Pb, and Zn), one metalloid (As), polycyclic aromatic hydrocarbons (PAHs), and alkylphenols (APs). The significant difference to the environment of the inner and outer parts of the estuary (p < 0.05) was found with relatively high concentrations of PTSs in sediment from the inner estuary. The concentrations of Cu and Zn exceeded the sediment quality guidelines of Korea representing a potential risk to aquatic organisms. The primary source of PAHs was by-products of diesel and gasoline combustion (37%), followed by a coke oven (32%) and oil-burning (31%). The macrofaunal community was spatially distinguished between the inner and outer parts of the estuary (p < 0.05), regardless of the season. In the inner part of the estuary, the density of the macrofaunal community was high, due to the increased opportunistic species and/or some indicator species (organic polluted or enrichment), implying that the given environment was disturbed. Among the environmental parameters analyzed by the distance-based linear model (DistLM), salinity, chlorophyll-a, and nutrient concentrations were found to be key factors controlling the changes in macrofaunal community structure. Such changes in the closed estuary system would indicate that each taxonomic group had to adjust to lower salinities and alternative food sources. Overall, the distribution of PTSs and macrozoobenthic communities in the Geum River Estuary collectively reflected the environmental gradients caused by surrounding activities in the inner part of the estuary together with direct effects by the irregular inflow of freshwater.
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Affiliation(s)
- Seo Joon Yoon
- School of Earth and Environmental Sciences & Research Institute of Oceanography, Seoul National University, Seoul 08826, Republic of Korea
| | - Seongjin Hong
- Department of Ocean Environmental Sciences, Chungnam National University, Daejeon 34134, Republic of Korea
| | - Hyeong-Gi Kim
- School of Earth and Environmental Sciences & Research Institute of Oceanography, Seoul National University, Seoul 08826, Republic of Korea
| | - Junghyun Lee
- School of Earth and Environmental Sciences & Research Institute of Oceanography, Seoul National University, Seoul 08826, Republic of Korea
| | - Taewoo Kim
- School of Earth and Environmental Sciences & Research Institute of Oceanography, Seoul National University, Seoul 08826, Republic of Korea
| | - Bong-Oh Kwon
- Department of Marine Biotechnology, Kunsan National University, Kunsan 54150, Republic of Korea
| | - Jaeseong Kim
- Water & Eco-Bio Co., Ltd., Jungboo Building, Miryong-dong, Kunsan 54156, Republic of Korea
| | - Jongseong Ryu
- Department of Marine Biotechnology, Anyang University, Ganghwagun, Incheon 23038, Republic of Korea
| | - Jong Seong Khim
- School of Earth and Environmental Sciences & Research Institute of Oceanography, Seoul National University, Seoul 08826, Republic of Korea.
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11
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Araújo MP, Hamacher C, Farias CDO, Soares MLG. Fecal sterols as sewage contamination indicators in Brazilian mangroves. MARINE POLLUTION BULLETIN 2021; 165:112149. [PMID: 33610111 DOI: 10.1016/j.marpolbul.2021.112149] [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: 09/11/2020] [Revised: 01/31/2021] [Accepted: 02/02/2021] [Indexed: 06/12/2023]
Abstract
Recent sewage contamination in Brazilian mangrove forests was evaluated using fecal sterols as biomarkers and socioeconomic indicators. The sterols were quantified by gas chromatography/mass spectrometry (GC/MS). Total fecal sterol concentrations ranged between 2.50 2.50 and 39.03 μg g-1 and coprostanol, between 0.23 and 6.97 μg g-1. Mangroves located in less urbanized regions presented low coprostanol levels and low coprostanol/cholesterol and (5β/5β + 5α) stanol ratios in sediment, while urban mangrove forests presented moderate fecal contamination. In the latter, an intense contribution of untreated domestic effluents associated to metropolitan areas was noted, leading to a significant correlation between coprostanol concentrations and inadequate sanitation, reflecting environmental problems associated to disorderly urbanization processes coupled to the absence of an adequate urban infrastructure. However, even in metropolitan areas, fecal sterol levels did not reach those of highly contaminated regions, probably due to the intense and accelerated degradation process typical of tropical environments. However, this study highlights the importance of fecal contamination assessment in mangrove areas since the presence of untreated sewage in these ecosystems is an issue of public and environmental health.
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Affiliation(s)
- Michelle Passos Araújo
- Laboratório de Geoquímica Orgânica Marinha (LAGOM), Faculdade de Oceanografia, Universidade do Estado do Rio de Janeiro, 20550-013 Rio de Janeiro, Brazil; Núcleo de Estudos em Manguezais (NEMA), Faculdade de Oceanografia, Universidade do Estado do Rio de Janeiro, 20550-013 Rio de Janeiro, Brazil.
| | - Cláudia Hamacher
- Laboratório de Geoquímica Orgânica Marinha (LAGOM), Faculdade de Oceanografia, Universidade do Estado do Rio de Janeiro, 20550-013 Rio de Janeiro, Brazil
| | - Cássia de Oliveira Farias
- Laboratório de Geoquímica Orgânica Marinha (LAGOM), Faculdade de Oceanografia, Universidade do Estado do Rio de Janeiro, 20550-013 Rio de Janeiro, Brazil
| | - Mário Luiz Gomes Soares
- Núcleo de Estudos em Manguezais (NEMA), Faculdade de Oceanografia, Universidade do Estado do Rio de Janeiro, 20550-013 Rio de Janeiro, Brazil
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12
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Alpire MES, Cardoso CM, Seabra Pereira CD, Ribeiro DA. Genomic instability in Buccal mucosal cells of children living in abnormal conditions from Santos-Sao Vicente Estuary. INTERNATIONAL JOURNAL OF ENVIRONMENTAL HEALTH RESEARCH 2021; 31:179-185. [PMID: 31257915 DOI: 10.1080/09603123.2019.1636004] [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: 03/15/2019] [Accepted: 06/20/2019] [Indexed: 06/09/2023]
Abstract
The aim of this study was to evaluate genomic instability and cytotoxicity in buccal mucosa cells of children living in abnormal conditions from Santos Sao Vicente estuary. The study area is located between coordinates 23°58'11.8"S and 46°24'26.3"W, in the southwestern zone of the Sao Paulo State, Brazil. A total of 40 children was distributed into two groups: exposed and non-exposed groups. The frequency of micronuclei increased to buccal mucosa cells of children living in Santos Sao Vicente estuary when compared to the non-exposed group (p < 0.05). No remarkable differences on buccal cells were found inpyknosis, karyorrhexis and karyolysi between groups. Taken together, our results suggest that children living in contaminated areas comprise a high group for genomic instability on buccal mucosa cells. Given that the current investigation is a preliminary study, further analysis with a larger sample of children is interesting as a future perspective.
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13
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de Moraes Calado SL, Salgado LD, Santos GS, da Silva Carvalho Neto F, de Menezes MS. Trace metals in estuarine organisms from a port region in southern Brazil: consumption risk to the local population. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:5283-5295. [PMID: 32960446 DOI: 10.1007/s11356-020-10836-7] [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: 01/15/2020] [Accepted: 09/13/2020] [Indexed: 06/11/2023]
Abstract
Metal contamination is a threat to estuarine environments. They can accumulate in the food chain and cause toxic effects on aquatic organisms and human health. This study evaluated the concentrations of metals (Cd, Cr, Cu, Fe, Ni, Pb, and Zn) in aquatic organisms of Antonina Bay (southern Brazil) to analyze whether the metal concentrations were in accordance with Brazilian food legislation and estimate the human risk of local seafood consumption. All analyzed organisms (Centropomus parallelus, Mugil curema, Genidens genidens, Crassostrea brasiliana, and Xiphopenaeus kroyeri) showed traces of metals in their tissues with different metal concentrations among species. Metal concentrations were generally higher in oyster C. brasiliana, and biomagnification was not observed. Cr and Zn concentrations were above the limits established by legislation for all species in at least one sample. The concentrations of the other metals were within permitted levels. However, concentrations of Cd, Cr, Fe, and Zn posed a human consumption risk. In general, the C. brasiliana oyster presented the highest risk for human consumption, probably due to its filtering habit. Thus, the results indicated that metal concentrations in the tissues of the Antonina Bay seafood can pose a risk to human health, and this chronic exposure to metals also can cause toxic effects on local aquatic biota.
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Affiliation(s)
- Sabrina Loise de Moraes Calado
- Ecology and Conservation Post-Graduation Program, Federal University of Paraná, P. O. Box 19031, Curitiba, Paraná, 81530-980, Brazil.
| | - Lilian Dalago Salgado
- Ecology and Conservation Post-Graduation Program, Federal University of Paraná, P. O. Box 19031, Curitiba, Paraná, 81530-980, Brazil
- Cananéia Research Institute, Cananéia, São Paulo, 11990-000, Brazil
| | - Gustavo Souza Santos
- Department of Genetics, Federal University of Paraná, P. O. Box 19031, Curitiba, Paraná, 81530-980, Brazil
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14
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An Ecological Risk Assessment of Sediments in a Developing Environment—Batticaloa Lagoon, Sri Lanka. JOURNAL OF MARINE SCIENCE AND ENGINEERING 2021. [DOI: 10.3390/jmse9010073] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The land-sea interface is considered as a threatening environment due to anthropogenic development activities. Unplanned developments can cause effects on important ecosystems, water and human health as well. In this study, the influence of rapid regional development on the accumulation of trace elements to the sediments of an important ecosystem, Batticaloa lagoon, Sri Lanka was examined. Surface sediment pollution status and ecological risk was compared with that of the recent sedimentary history of about 1 m depth. Sediment core samples were collected and analyzed for grain size, organic matter and carbonate contents and trace elements (As, Pb, Zn, Cu, Ni and Cr) by the X-Ray Fluorescence (XRF) technique. The chemical results of core samples and recently published data of surface sediments of the same project were evaluated by pollution load index (PLI), potential ecological risk index (PERI) and sediment quality guidelines (SQG). Except for Cr, all other elements in cores show lower concentrations than the SQGs confirming the high Cr contents as recorded in the most of other Sri Lankan sediments. The sediment cores indicate an unpolluted, low ecological risk sedimentary history for all core sampling locations, whereas most of the surface sediments of the lagoon are less polluted with low potential ecological risk. Present anthropogenic practices and illiteracy of this rapid developing region can damage the green environment and hence environmental management planning is suggested for a sustainable future.
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15
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Mbusnum KG, Malleret L, Deschamps P, Khabouchi I, Asia L, Lebarillier S, Menot G, Onguene R, Doumenq P. Persistent organic pollutants in sediments of the Wouri Estuary Mangrove, Cameroon: Levels, patterns and ecotoxicological significance. MARINE POLLUTION BULLETIN 2020; 160:111542. [PMID: 33181915 DOI: 10.1016/j.marpolbul.2020.111542] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Revised: 07/30/2020] [Accepted: 07/30/2020] [Indexed: 06/11/2023]
Abstract
The anthropogenic impact in the Wouri Estuary Mangrove located in the rapidly developing urban area of Douala, Cameroon, Africa, was studied. A set of 45 Persistent Organic Pollutant were analysed in surficial mangrove sediments at 21 stations. Chlorinated Pesticides (CLPs), Polychlorinated Biphenyls (PCBs) and Polycyclic Aromatic Hydrocarbons (PAHs) have concentrations ranging from 2.2 - 27.4, and 83 - 544 ng/g, respectively. The most abundant CLPs were endosulfan, alachlor, heptachlor, lindane (γ-HCH) and DDT, which metabolites pattern revealed recent use. Selected PAHs diagnostic ratios show pyrolytic input predominantly. The sum of 7 carcinogenic PAHs (ΣC-PAHs) represented 30 to 50% of Total PAHs (TPAHs). According to effect-based sediment quality guidelines, the studied POPs levels imply low to moderate predictive biological toxicity. This study contributes to depict how far water resources are shifting within what is now termed the Anthropocene due to increasing local pressures in developing countries or African countries.
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Affiliation(s)
- Kevin G Mbusnum
- Aix Marseille Université, CNRS, LCE, France; LMI DYCOFAC (IRD, Université de Yaoundé 1, IRGM), IRD, Yaoundé, Cameroon
| | | | - Pierre Deschamps
- Aix Marseille Université, CNRS, IRD, Collège de France, CEREGE, France; LMI DYCOFAC (IRD, Université de Yaoundé 1, IRGM), IRD, Yaoundé, Cameroon
| | | | | | | | - Guillemette Menot
- Université de Lyon, Ens de Lyon, CNRS, LGL-TPE, France; LMI DYCOFAC (IRD, Université de Yaoundé 1, IRGM), IRD, Yaoundé, Cameroon
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16
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Dos Reis Souza MR, Santos E, Suzarte JS, do Carmo LO, Soares LS, Santos LGGV, Júnior ARV, Krause LC, Frena M, Damasceno FC, Huang Y, da Rosa Alexandre M. The impact of anthropogenic activity at the tropical Sergipe-Poxim estuarine system, Northeast Brazil: Fecal indicators. MARINE POLLUTION BULLETIN 2020; 154:111067. [PMID: 32319900 DOI: 10.1016/j.marpolbul.2020.111067] [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: 09/11/2019] [Revised: 03/09/2020] [Accepted: 03/10/2020] [Indexed: 06/11/2023]
Abstract
The individual concentrations and sources of sterols in sediments samples collected in two periods 2017 (dry period /March and rainy period/August) were determined along with the Sergipe-Poxim estuarine system, Aracaju, Brazil. The individual sterols concentration ranged from 135 to 21,746 ng g-1 (March) and 191 to 144,748 ng g-1 (August) and the distribution was mainly dominated by β-sitosterol in both periods with 37.2% (March) and 70.8% (August) of the total sterols found. In all the sampling sites, the coprostanol levels were higher than 100 ng g1 (March) and 500 ng g-1 (August), indicating sewage contamination. Diagnostic ratios between sterols suggested the predominance of sewage sources. Pearson correlation assessed a correlation significant (March) and negligible (August) between coprostanol concentration levels and organic matter. The principal component analysis (PCA) showed that the sterols levels influenced strongly C1, as well as C2 distinguished between the plant sterols and from sewage.
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Affiliation(s)
- Michel Rubens Dos Reis Souza
- Tiradentes University, Industrial Biotechnology Graduate Program, Aracaju, Sergipe 49032-490, Brazil; Federal University of Sergipe, Chemistry Department, São Cristóvão, Sergipe 49100-000, Brazil.
| | - Ewerton Santos
- Federal University of Sergipe, Chemistry Department, São Cristóvão, Sergipe 49100-000, Brazil
| | - Jaiane Santos Suzarte
- Federal University of Sergipe, Chemistry Department, São Cristóvão, Sergipe 49100-000, Brazil
| | | | - Laiane Santos Soares
- Federal University of Sergipe, Chemistry Department, São Cristóvão, Sergipe 49100-000, Brazil
| | | | | | - Laiza Canielas Krause
- Tiradentes University, Industrial Biotechnology Graduate Program, Aracaju, Sergipe 49032-490, Brazil
| | - Morgana Frena
- Federal University of Santa Catarina, Chemistry Department, Campus Universitário Trindade, Florianópolis, Santa Catarina 88040-900, Brazil
| | | | - Yongsong Huang
- Brown University, Department of Earth, Environmental and Planetary Science, Providence, RI 02912, United States of America
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17
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Das S, Aria A, Cheng JO, Souissi S, Hwang JS, Ko FC. Occurrence and distribution of anthropogenic persistent organic pollutants in coastal sediments and mud shrimps from the wetland of central Taiwan. PLoS One 2020; 15:e0227367. [PMID: 31917823 PMCID: PMC6956766 DOI: 10.1371/journal.pone.0227367] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Accepted: 12/17/2019] [Indexed: 11/28/2022] Open
Abstract
Sediment profile and mud shrimp (Austinogebia edulis) from the
coastal wetland of central Taiwan in 2017 and 2018 were analyzed for
concentration, source, and composition of persistent organic pollutants (POPs)
including polycyclic aromatic hydrocarbon (PAHs), polybrominated diphenyl ethers
(PBDEs), organochlorine pesticides (OCPs; DDT and HCB), and polychlorinated
biphenyls (PCBs). Sediment profiling indicated PAH concentrations reaching
254.38 ng/g dw in areas near industrial areas and PAH concentrations of 41.8 and
58.42 ng/g dw in sampling areas further from industrial areas, suggesting that
the determining factor for spatial distribution of POPs might be proximity to
contaminant sources in industrial zones. Based on molecular indices, PAHs were
substantially of both pyrolytic and petrogenic origins. The main sources for
PCBs were Aroclor 1016 and 1260 and the congener BDE-209 was the dominant
component among PBDE congeners. While we were unable to obtain live mud shrimp
samples from the heavily contaminated areas, in samples from less contaminated
areas, the risk assessment on mud shrimp still illustrated a borderline threat,
with DDT concentrations almost reaching standardized values of Effects Range-Low
(ERL). Bioaccumulation factors for DDTs and PCBs (17.33 and 54.59, respectively)
were higher than other POPs in this study. Further study is essential to assess
and understand the impact of these chemicals on the wetland ecosystem near this
heavily industrialized area.
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Affiliation(s)
- Shagnika Das
- Institute of Marine Biology, National Taiwan Ocean University, Keelung,
Taiwan
- University Lille, CNRS, University Littoral Cote d’Opale, UMR 8187, LOG,
Laboratoire d’Océanologie et de Géosciences, Wimereux, France
| | - Andres Aria
- Argentine Institute of Oceanography, Bahia Blanca,
Argentina
- National South University, Chemistry Department, Area III, Bahía Blanca,
Argentina
| | - Jing-O Cheng
- National Museum of Marine Biology and Aquarium, Checheng, Pingtung,
Taiwan
| | - Sami Souissi
- University Lille, CNRS, University Littoral Cote d’Opale, UMR 8187, LOG,
Laboratoire d’Océanologie et de Géosciences, Wimereux, France
| | - Jiang-Shiou Hwang
- Institute of Marine Biology, National Taiwan Ocean University, Keelung,
Taiwan
- Center of Excellence for the Oceans, National Taiwan Ocean University,
Keelung, Taiwan
| | - Fung-Chi Ko
- National Museum of Marine Biology and Aquarium, Checheng, Pingtung,
Taiwan
- Institute of Marine Biology, National Dong-Hwa University, Pingtung,
Taiwan
- * E-mail:
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18
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Theuerkauff D, Rivera-Ingraham GA, Lambert S, Mercky Y, Lejeune M, Lignot JH, Sucré E. Wastewater bioremediation by mangrove ecosystems impacts crab ecophysiology: In-situ caging experiment. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2020; 218:105358. [PMID: 31805486 DOI: 10.1016/j.aquatox.2019.105358] [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: 08/21/2019] [Revised: 10/31/2019] [Accepted: 11/09/2019] [Indexed: 05/28/2023]
Abstract
Mangroves are tidal wetlands that are often under strong anthropogenic pressures, despite the numerous ecosystem services they provide. Pollution from urban runoffs is one such threats, yet some mangroves are used as a bioremediation tool for wastewater (WW) treatment. This practice can impact mangrove crabs, which are key engineer species of the ecosystem. Using an experimental area with controlled WW releases, this study aimed to determine from an ecological and ecotoxicological perspective, the effects of WW on the red mangrove crab Neosarmatium africanum. Burrow density and salinity levels (used as a proxy of WW dispersion) were recorded, and a 3-week caging experiment was performed. Hemolymph osmolality, gill Na+/K+-ATPase (NKA) activity and gill redox balance were assessed in anterior and posterior gills of N. africanum. Burrow density decreased according to salinity decreases around the discharged area. Crabs from the impacted area had a lower osmoregulatory capacity despite gill NKA activity remaining undisturbed. The decrease of the superoxide dismutase activity indicates changes in redox metabolism. However, both catalase activity and oxidative damage remained unchanged in both areas but were higher in posterior gills. These results indicate that WW release may induce osmoregulatory and redox imbalances, potentially explaining the decrease in crab density. Based on these results we conclude that WW release should be carefully monitored as crabs are key players involved in the bioremediation process.
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Affiliation(s)
- Dimitri Theuerkauff
- UMR MARBEC (University of Montpellier, CNRS, IFREMER, IRD), Montpellier, France; Centre Universitaire de Mayotte, Route Nationale 3, BP 53, 97660 Dembeni, Mayotte, France.
| | | | - Sophia Lambert
- Centre Universitaire de Mayotte, Route Nationale 3, BP 53, 97660 Dembeni, Mayotte, France
| | - Yann Mercky
- UMR MARBEC (University of Montpellier, CNRS, IFREMER, IRD), Montpellier, France; Centre Universitaire de Mayotte, Route Nationale 3, BP 53, 97660 Dembeni, Mayotte, France
| | - Mathilde Lejeune
- UMR MARBEC (University of Montpellier, CNRS, IFREMER, IRD), Montpellier, France; Centre Universitaire de Mayotte, Route Nationale 3, BP 53, 97660 Dembeni, Mayotte, France
| | - Jehan-Hervé Lignot
- UMR MARBEC (University of Montpellier, CNRS, IFREMER, IRD), Montpellier, France
| | - Elliott Sucré
- UMR MARBEC (University of Montpellier, CNRS, IFREMER, IRD), Montpellier, France; Centre Universitaire de Mayotte, Route Nationale 3, BP 53, 97660 Dembeni, Mayotte, France
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19
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Qiu YW, Qiu HL, Zhang G, Li J. Bioaccumulation and cycling of organochlorine pesticides (OCPs) and polychlorinated biphenyls (PCBs) in three mangrove reserves of south China. CHEMOSPHERE 2019; 217:195-203. [PMID: 30415117 DOI: 10.1016/j.chemosphere.2018.10.188] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2018] [Revised: 10/25/2018] [Accepted: 10/26/2018] [Indexed: 06/09/2023]
Abstract
Total 22 organochlorine pesticides (OCPs) compounds and 31 polychlorinated biphenyls (PCBs) congeners in mangrove sediments and tissues (leaf, branch, root and fruit) of nine species from three Mangrove Reserves of China were studied. The mean concentrations of total DDTs, HCHs, OCPs and PCBs in sediments were 2.84, 0.06, 3.84 and 0.17 ng g-1 dw, while those in tissues were 1.85, 0.22, 9.43 and 1.61 ng g-1 dw, respectively. The elevated OCPs and PCBs levels in mangrove leaves may be caused by atmospheric sedimentation. The biota sediment accumulation factor (BSAF) values of both OCPs (mean: 3.4) and PCBs (mean: 9.9) are generally larger than one, implying mangroves' bioaccumulation and their ability to intercept pollutants. The BSAFs of PCBs in mangrove tissues were negatively correlated with the PCB congener's octanol-water partition coefficients (KOW, R = 0.58, n = 31, p < 0.001), suggesting that lower chlorinated CB congeners are more bioaccumulative in mangroves. In order to better understanding the fate of these organochlorine compounds, the cycling (including the standing accumulation, the annual absorption, the annual net retention, the annual return, and the turnover period) of OCPs and PCBs in the Mangrove Reserves were estimated, and the results indicated that mangroves are playing important roles in retaining OCPs and PCBs.
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Affiliation(s)
- Yao-Wen Qiu
- State Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, 510301, China.
| | - Han-Lin Qiu
- School of Materials Science and Engineering, Hubei University, Wuhan, 430062, China
| | - Gan Zhang
- State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, China
| | - Jun Li
- State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, China
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20
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Tang Q, Collins AL, Wen A, He X, Bao Y, Yan D, Long Y, Zhang Y. Particle size differentiation explains flow regulation controls on sediment sorting in the water-level fluctuation zone of the Three Gorges Reservoir, China. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 633:1114-1125. [PMID: 29758863 DOI: 10.1016/j.scitotenv.2018.03.258] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2018] [Revised: 03/20/2018] [Accepted: 03/21/2018] [Indexed: 06/08/2023]
Abstract
The Three Gorges Dam has significantly interrupted fluvial continuity and modified the mass transfer regime along river continuums. Flow regulation following regular dam operations drives dramatic hydrological regime shifts, which facilitates sediment dispersal in the water-level fluctuation zone over episodic inundation periods. How flow regulation modulates sediment redistribution, however, remains unclear. In this study, we depict absolute particle size composition of suspended sediment and sink sediment in the water-level fluctuation zone, and these are interpreted in the context of flow regulation controls on sediment sorting. Multiple sampling strategies were applied at different spatial and temporal scales, to overcome limitations of labour and cost input in a large-scale field study and to collect representative samples. The results revealed a longitudinal fining trend and seasonal variability in particle size composition for suspended sediment. Sink sediment collected from the water-level fluctuation zone during a single summer flood event displayed a similar longitudinal fining trend, reflecting preferential settling of coarser fractions in the backwater reaches where flow velocity declines sharply. Surface sediment demonstrated a laterally coarsening trend with increasing elevations along a slope profile. Flooding duration, frequency and timing represent key factors in determining the elevation-dependent variations in the magnitude of sedimentation and its source inputs. Relatively longer flooding duration and frequent intermediate summer floods with high suspended sediment flux are responsible for high sedimentation rates in the lower portions with distal upstream source inputs, while low sedimentation rates in the upper portions are principally associated with water impoundment and sediment produced from local bank erosion. Vertical particle size variability was observed along a sedimentary core profile, which most likely reflects seasonal differences in source supply with contrasting particle size characteristics. We conclude that absolute particle size differentiation explains flow regulation controls on sediment sorting in the water-level fluctuation zone of the Three Gorges Reservoir.
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Affiliation(s)
- Qiang Tang
- Key Laboratory of Mountain Surface Processes and Ecological Regulation, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610041, China; Sustainable Agriculture Sciences Department, Rothamsted Research, North Wyke, Okehampton, Devon EX20 2SB, UK
| | - Adrian L Collins
- Sustainable Agriculture Sciences Department, Rothamsted Research, North Wyke, Okehampton, Devon EX20 2SB, UK
| | - Anbang Wen
- Key Laboratory of Mountain Surface Processes and Ecological Regulation, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610041, China
| | - Xiubin He
- Key Laboratory of Mountain Surface Processes and Ecological Regulation, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610041, China
| | - Yuhai Bao
- Key Laboratory of Mountain Surface Processes and Ecological Regulation, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610041, China
| | - Dongchun Yan
- Key Laboratory of Mountain Surface Processes and Ecological Regulation, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610041, China.
| | - Yi Long
- Key Laboratory of Mountain Surface Processes and Ecological Regulation, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610041, China
| | - Yusheng Zhang
- Sustainable Agriculture Sciences Department, Rothamsted Research, North Wyke, Okehampton, Devon EX20 2SB, UK
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21
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Theuerkauff D, Rivera-Ingraham GA, Mercky Y, Lejeune M, Lignot JH, Sucré E. Effects of domestic effluent discharges on mangrove crab physiology: Integrated energetic, osmoregulatory and redox balances of a key engineer species. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2018; 196:90-103. [PMID: 29407802 DOI: 10.1016/j.aquatox.2018.01.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2017] [Revised: 11/30/2017] [Accepted: 01/04/2018] [Indexed: 06/07/2023]
Abstract
Mangroves are increasingly used as biofiltering systems of (pre-treated) domestic effluents. However, these wastewater discharges may affect local macrofauna. This laboratory study investigates the effects of wastewater exposure on the mangrove spider crab Neosarmatium meinerti, a key engineering species which is known to be affected by waste waters in effluent-impacted areas. These effects were quantified by monitoring biological markers of physiological state, namely oxygen consumption, the branchial cavity ventilation rate, gill physiology and morphology, and osmoregulatory and redox balance. Adults acclimated to clean seawater (SW, 32 ppt) and freshwater (FW, ∼0 ppt) were compared to crabs exposed to wastewater for 5 h (WW, ∼0 ppt). Spider crabs exposed to WW increased their ventilation and whole-animal respiration rates by 2- and 3-fold respectively, while isolated gill respiration increased in the animals exposed to FW (from 0.5 to 2.3 and 1.1 nmol O2 min-1 mg DW-1 for anterior and posterior gills, respectively) but was not modified in WW-exposed individuals. WW exposure also impaired crab osmoregulatory capacity; an 80 mOsm kg-1 decrease was observed compared to FW, likely due to decreased branchial NKA activity. ROS production (DCF fluorescence in hemolymph), antioxidant defenses (superoxide dismutase and catalase activities) and oxidative damage (malondialdehyde concentration) responses varied according to animal gender. Overall, this study demonstrates that specific physiological parameters must be considered when focusing on crabs with bimodal breathing capacities. We conclude that spider crabs exposed to WW face osmoregulatory imbalances due to functional and morphological gill remodeling, which must rapidly exhaust energy reserves. These physiological disruptions could explain the ecological changes observed in the field.
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Affiliation(s)
- Dimitri Theuerkauff
- UMR MARBEC (University of Montpellier, CNRS, IFREMER, IRD), Montpellier, France; Centre Universitaire de Mayotte, Route Nationale 3, BP 53, 97660 Dembeni, Mayotte, France.
| | | | - Yann Mercky
- UMR MARBEC (University of Montpellier, CNRS, IFREMER, IRD), Montpellier, France; Centre Universitaire de Mayotte, Route Nationale 3, BP 53, 97660 Dembeni, Mayotte, France
| | - Mathilde Lejeune
- UMR MARBEC (University of Montpellier, CNRS, IFREMER, IRD), Montpellier, France
| | - Jehan-Hervé Lignot
- UMR MARBEC (University of Montpellier, CNRS, IFREMER, IRD), Montpellier, France
| | - Elliott Sucré
- UMR MARBEC (University of Montpellier, CNRS, IFREMER, IRD), Montpellier, France; Centre Universitaire de Mayotte, Route Nationale 3, BP 53, 97660 Dembeni, Mayotte, France
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22
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Souza MRR, Santos E, Suzarte JS, Carmo LO, Frena M, Damasceno FC, Alexandre MR. Concentration, distribution and source apportionment of polycyclic aromatic hydrocarbons (PAH) in Poxim River sediments, Brazil. MARINE POLLUTION BULLETIN 2018; 127:478-483. [PMID: 29475688 DOI: 10.1016/j.marpolbul.2017.12.045] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2017] [Revised: 12/13/2017] [Accepted: 12/18/2017] [Indexed: 06/08/2023]
Abstract
The individual concentrations, total amount and sources of 16 priority polycyclic aromatic hydrocarbons (PAH) in sediments collected along of the Poxim River, Aracaju, Brazil, were for the first time determined. The ΣPAH ranged between 2.2±1.5ngg-1 and 28.4±6.9ngg-1, with a mean value of 14.4±9.3ngg-1. The Pearson correlation test and Principal component analysis (PCA) were used to assess the correlation between the PAH, organic matter and grain size; and to differentiate the sampling stations. Diagnostic ratios presented predominance of pyrogenic sources. Therefore, the PAH quantified showed the influence of anthropogenic activities near of the Poxim River.
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Affiliation(s)
- Michel R R Souza
- Universidade Federal de Sergipe, Departamento de Química, São Cristóvão, Sergipe, SE 491000-000, Brazil
| | - Ewerton Santos
- Universidade Federal de Sergipe, Departamento de Química, São Cristóvão, Sergipe, SE 491000-000, Brazil
| | - Jaiane S Suzarte
- Universidade Federal de Sergipe, Departamento de Química, São Cristóvão, Sergipe, SE 491000-000, Brazil
| | - Laiane O Carmo
- Universidade Federal de Sergipe, Departamento de Química, São Cristóvão, Sergipe, SE 491000-000, Brazil
| | - Morgana Frena
- Universidade Federal de Santa Catarina, Departamento de Química, Campus Universitário Trindade, Florianópolis, Santa Catarina, SC 88040-900, Brazil
| | - Flaviana C Damasceno
- Universidade Federal de Sergipe, Departamento de Química, São Cristóvão, Sergipe, SE 491000-000, Brazil.
| | - Marcelo R Alexandre
- Universidade Federal de Sergipe, Departamento de Química, São Cristóvão, Sergipe, SE 491000-000, Brazil
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23
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Friess DA, Lee SY, Primavera JH. Turning the tide on mangrove loss. MARINE POLLUTION BULLETIN 2016; 109:673-675. [PMID: 27373944 DOI: 10.1016/j.marpolbul.2016.06.085] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2016] [Accepted: 06/21/2016] [Indexed: 06/06/2023]
Affiliation(s)
- D A Friess
- Department of Geography, National University of Singapore, 1 Arts Link, 117570, Singapore.
| | - S Y Lee
- Australian Rivers Institute and School of Environment, Griffith University, Southport, Qld 4222, Australia.
| | - J H Primavera
- Conservation Programmes, Zoological Society of London-Philippines, 43-E Burgos Street, Barangay Magdalo, La Paz, 5000 Iloilo City, Philippines.
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