2,256 results match your criteria mangrove area

Mangrove sinkholes () of the Yucatan Peninsula, a global hotspot of carbon sequestration.

Biol Lett 2021 May 5;17(5):20210037. Epub 2021 May 5.

University of Wollongong, Wollongong, NSW 2522, Australia.

Mangroves are among the most carbon-dense ecosystems on the planet. The capacity of mangroves to store and accumulate carbon has been assessed and reported at regional, national and global scales. However, small-scale sampling is still revealing 'hot spots' of carbon accumulation. Read More

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Exploring the Diversity of Fungal DyPs in Mangrove Soils to Produce and Characterize Novel Biocatalysts.

J Fungi (Basel) 2021 Apr 21;7(5). Epub 2021 Apr 21.

INRAE, UMR1163, Biodiversité et Biotechnologie Fongiques, Aix-Marseille Université, 13288 Marseille, France.

The functional diversity of the New Caledonian mangrove sediments was examined, observing the distribution of fungal dye-decolorizing peroxidases (DyPs), together with the complete biochemical characterization of the main DyP. Using a functional metabarcoding approach, the diversity of expressed genes encoding fungal DyPs was investigated in surface and deeper sediments, collected beneath either or trees, during either the wet or the dry seasons. The highest DyP diversity was observed in surface sediments beneath the area during the wet season, and one particular operational functional unit (OFU1) was detected as the most abundant DyP isoform. Read More

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Spatial distribution of microplastics in the superficial sediment of a mangrove in Southeast Brazil: A comparison between fringe and basin.

Sci Total Environ 2021 Apr 16;784:146963. Epub 2021 Apr 16.

Biological Sciences Department, Center for Human and Natural Sciences, Federal University of Espírito Santo, Av. Fernando Ferrari, 514, Vitória, Espírito Santo 29075-910, Brazil. Electronic address:

The presence of microplastics (MPs) has been observed globally in every marine environment, including mangroves. However, the distribution of MPs in mangroves comparing fringe and basin forests and their ecological consequences need be better investigated. The objectives of this study were to verify the presence, distribution and types of MPs in a mangrove area in southeast Brazil. Read More

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Two new species of emTypton/em Costa, 1844 from tropical American waters, with taxonomic notes on emT. tortugae/em McClendon, 1911 and a new record of br /emT. granulosus/em Ayón-Parente, Hendrickx amp; Galvan-Villa, 2015 (Decapoda: Caridea: Palaemonidae).

Zootaxa 2021 Mar 30;4950(2):zootaxa.4950.2.3. Epub 2021 Mar 30.

Universidade Federal de Goiás, Campus Samambaia, Instituto de Ciências Biológicas-ICB-5, Av. Esperança, s/n., 74690-900, Goiânia, GO, Brazil..

Two new species of the palaemonid shrimp genus Typton Costa, 1844 are described based on material from Panama and Mexico. Both species are closely related to T. tortugae McClendon, 1911, a species originally described from the Dry Tortugas, off southern Florida, USA, and later scarcely recorded from other western Atlantic localities, from Bermuda to Mexico and Brazil. Read More

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sp. nov., isolated from mangrove sediments.

Int J Syst Evol Microbiol 2021 Apr;71(4)

Third Institute of Oceanography, Ministry of Natural Resources, Xiamen, PR China.

A novel Gram-staining-negative, catalase- and oxidase-positive, facultatively anaerobic and rod-shaped motile bacterial strain, designated as ZWAL4003, was isolated from mangrove sediments of the Zini Mangrove Forest, Zhangzhou City, PR China. Phylogenetic analysis based on its 16S rRNA gene sequence indicated that ZWAL4003 was grouped into a separated branch with MSSRF60 (97.38% nucleotide sequence identity) and NBRC 103148 (97. Read More

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Assessing the contribution of mangrove carbon and of other basal sources to intertidal flats adjacent to one of the largest West African mangrove forests.

Mar Environ Res 2021 Apr 9;169:105331. Epub 2021 Apr 9.

Centro de Estudos do Ambiente e do Mar (CESAM), Departamento de Biologia Animal, Faculdade de Ciências da Universidade de Lisboa, Lisboa, Portugal.

Mangrove forests are productive habitats and major potential exporters of organic matter and nutrients to adjacent habitats. Here we examine the extent to which mangrove carbon is transferred to adjacent intertidal food webs in the second largest mangrove-covered area in Africa, in Guinea-Bissau. Applying stable isotope analysis and mixing models, we made comparisons at two spatial scales: (1) a large scale, comparing intertidal flats with (mangrove sites) and without (control sites) adjacent mangrove forests regarding the carbon isotopic signature of macrozoobenthos and sediment organic matter (SOM), and the relative importance of potential primary food sources in sustaining macrozoobenthos, and (2) a fine scale, performing stable carbon isotope measurements along 200 m transects from the coastline out to open intertidal flats, to trace mangrove carbon in macrozoobenthos and in the SOM. Read More

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A benthic habitat sensitivity analysis of Qatar's coastal zone.

Mar Pollut Bull 2021 Apr 16;167:112333. Epub 2021 Apr 16.

Environmental Management Division, ExxonMobil Research Qatar, Qatar Science and Technology Park, Tech 2, PO BOX 22500, Al Wosail Tower, Doha, Qatar.

Characterizing benthic habitat sensitivities of rapidly-developing countries is of paramount importance. Recent efforts defining the benthic habitat of Qatar's coastal zone with a high-resolution, ground-truthed benthic habitat map has provided a framework on which to develop a habitat sensitivity map. Here we present a sensitivity analysis catered towards identifying habitats with varying sensitivities to natural and anthropogenic stressors on a quantitative scale from 1 to 5, low to high. Read More

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ENSO feedback drives variations in dieback at a marginal mangrove site.

Sci Rep 2021 Apr 14;11(1):8130. Epub 2021 Apr 14.

School of Biological Sciences, The University of Queensland, Brisbane, QLD, Australia.

Ocean-atmosphere climatic interactions, such as those resulting from El Niño Southern Oscillation (ENSO) are known to influence sea level, sea surface temperature, air temperature, and rainfall in the western Pacific region, through to the north-west Australian Ningaloo coast. Mangroves are ecologically important refuges for biodiversity and a rich store of blue carbon. Locations such as the study site (Mangrove Bay, a World Heritage Site within Ningaloo Marine Park and Cape Range National Park) are at the aridity range-limit which means trees are small in stature, forests small in area, and are potentially susceptible to climate variability such as ENSO that brings lower sea level and higher temperature. Read More

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Metal accumulation and biomineralisation of coastal and mangrove-associated molluscs of Palk Bay, Southeastern India.

Mar Pollut Bull 2021 Apr 9;167:112259. Epub 2021 Apr 9.

Departamento de QuímicaAnalítica, Nutrición y Bromatología, Facultade de Veterinaria, Universidade de Santiago de Compostela, Pabellón 4, Planta Baja, 27002 Lugo, Spain.

The present study aimed to determine metal accumulation levels in tissue and biomineralisation in shells of 20 species of molluscs (13 gastropods and 7 bivalves) from Palk Bay, India. In most cases, metal concentrations in the tissues were higher than in the shells of the same species collected from same location, meaning that in many cases biomineralisation factors of metal ratios were <1. The highest biomineralisation factor for Cd was detected in Melampus sincaporensis (3. Read More

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Assessing ecological health of mangrove ecosystems along South China Coast by the pressure-state-response (PSR) model.

Ecotoxicology 2021 May 8;30(4):622-631. Epub 2021 Apr 8.

Environmental Engineering, Guangdong Technion-Israel Institute of Technology, 241 Daxue Road, Shantou, 515063, Guangdong, China.

The pressure-state-response (PSR) model was applied to establish a mangrove ecosystem health evaluation system combined with analytical hierarchy process (AHP) in this paper. The mangrove wetlands are divided into five ecological levels: excellent health, good health, health, sub-health and morbidity, which is based on the comprehensive health index (CHI) value. Twelve representative sites were selected for sampling to assess the ecological health condition of mangroves. Read More

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A Review of Heavy Metals in Coastal Surface Sediments from the Red Sea: Health-Ecological Risk Assessments.

Int J Environ Res Public Health 2021 03 10;18(6). Epub 2021 Mar 10.

Department of Biology, Faculty of Science, Universiti Putra Malaysia, UPM, Serdang 43400, Selangor, Malaysia.

The heavy metal (HM) pollution in sediment is of serious concern, particularly in the Red Sea environment. This study aimed to review and compile data on the concentrations of four HMs (Cd, Cu, Pb, and Zn) in the coastal surface sediments from the Red Sea, mainly from Saudi Arabia, Egypt, and Yemen, published in the literature from 1992 to 2021. The coastal sediments included those from mangrove, estuaries, and intertidal ecosystems. Read More

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Ocean Currents Drove Genetic Structure of Seven Dominant Mangrove Species Along the Coastlines of Southern China.

Front Genet 2021 8;12:615911. Epub 2021 Mar 8.

Asian Natural Environmental Science Center, The University of Tokyo, Tokyo, Japan.

Mangrove forest ecosystems, which provide important ecological services for marine environments and human activities, are being destroyed worldwide at an alarming rate. The objective of our study was to use molecular data and analytical techniques to separate the effects of historical and contemporary processes on the distribution of mangroves and patterns of population genetic differentiation. Seven mangrove species (, , , , , , and ), which are predominant along the coastlines of South China, were genotyped at nuclear (nSSR) and chloroplast (cpSSR) microsatellite markers. Read More

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Does ecotourism in a Mangrove area at Klong Kone, Thailand, conform to sustainable tourism? A case study using SWOT and DPSIR.

Environ Dev Sustain 2021 Mar 16:1-26. Epub 2021 Mar 16.

Department of Environmental Science, Faculty of Science, Silpakorn University, Nakorn Pathom, 73000 Thailand.

This study aimed to assess ecotourism in a mangrove area and whether it conformed with sustainable tourism. We were interested in exploring the demand for natural resources and the supply of areas for ecotourism. To achieve this, we integrated a SWOT (strengths, weaknesses, opportunities, and threats) analysis with the DPSIR (driving forces, pressures, states, impacts, and responses) framework, based on questionnaire interviews with three target groups (tourists, homestay operators, and community residents), plus in-depth interviews with local scholars and officers of administrative organizations. Read More

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Comparison of benthic nematode assemblages in native mangrove forest and exotic mangrove plantations (Sonneratia apetala Buch-Ham) along the South China Coast.

Mar Pollut Bull 2021 May 20;166:112249. Epub 2021 Mar 20.

Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, Xiamen University, Xiamen 361102, China; College of the Environment & Ecology, Xiamen University, Xiamen 361102, China. Electronic address:

The exotic mangrove species Sonneratia apetala has been planted widely in China since 1985. As an exotic mangrove species, it is important to understand the influence of Sonneratia plantations on marine nematode assemblages. We studied the Zhanjiang and Xiatanwei mangrove wetlands on the South China Coast during the four seasons of 2010 and 2019. Read More

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Biological responses of mangrove oysters (Crassostrea rhizophorae) and mercury contamination in an urban tropical estuary.

Mar Pollut Bull 2021 May 16;166:112233. Epub 2021 Mar 16.

Departamento de Farmacologia, Instituto de Ciências Biomédicas (ICB), Universidade de São Paulo (USP), Av. Lineu Prestes 1524, Prédio Biomédicas I, sala 213 Butantã, 05508900 São Paulo, SP, Brazil.

This study aimed to assess the biological responses of oysters from an urban estuary in Northeast Brazil, through the evaluation of biochemical and physiological biomarkers, and integrate these responses with the investigation of mercury seasonal contamination. Oysters and sediment were collected from three sites in the estuary of the Ceará River during dry and rainy seasons. Biomarkers (AchE, CaE, GST, CAT, and Condition Index) were analyzed in different tissues. Read More

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Different trophodynamics between two proximate estuaries with differing degrees of pollution.

Sci Total Environ 2021 May 18;770:144651. Epub 2021 Jan 18.

Departamento de Ciências Fisiológicas, Universidade Federal de São Carlos, Rodovia Washington Luiz km 235, 13565-905 São Carlos, São Paulo, Brazil. Electronic address:

Mangroves are complex ecosystems with widely varying abiotic factors such as salinity, pH, redox potential, substratum particle size, dissolved organic matter and xenobiotic concentrations, and a high biodiversity. This paper presents the trophodynamic pathways of accumulation and transfer of metals and metalloids (B, Al, V, Cr, Mn, Fe, Ni, Cu, Zn, Ag, As, Se, Rb, Sr, Pb and Hg), in three trophic chains (plant-crab-fish, plankton-shrimp-fish and plankton-oyster) of similar food webs, corresponding to two mangrove estuaries (Santa Cruz and Vitória Bay, separated by 70 km) in the Espírito Santo State (Brazil). Although the trophic transfer patterns are affected by physical variables, metal and metalloids were found in all trophic levels. Read More

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Comparative transcriptome analysis reveals different functions of Kandelia obovata superoxide dismutases in regulation of cadmium translocation.

Sci Total Environ 2021 Jun 29;771:144922. Epub 2021 Jan 29.

Key Laboratory of Ministry of Education for Coastal and Wetland Ecosystems, College of the Environment and Ecology, Xiamen University, Xiamen 361102, PR China. Electronic address:

Kandelia obovata is a dominant mangrove species in southeastern of China. This species has a high tolerance to heavy metal stress that is mainly ascribed to the thickening of the secondary exodermis and high activity of superoxide dismutase (SOD) enzymes in the roots. The thickened exodermis inhibits entry of heavy metals into the roots, and oxidative stress due to Cd can be reduced efficiently by SOD activity. Read More

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Environmental Isolation of Candida auris from the Coastal Wetlands of Andaman Islands, India.

mBio 2021 03 16;12(2). Epub 2021 Mar 16.

Department of Medical Mycology, Vallabhbhai Patel Chest Institute, University of Delhi, New Delhi, India

is a multidrug resistant pathogen that presents a serious global threat to human health. As is a newly emerged pathogen, several questions regarding its ecological niche remain unexplored. While species closely related to have been detected in different environmental habitats, little is known about the natural habitat(s) of Here, we explored the virgin habitats around the very isolated Andaman Islands in the Indian Ocean for evidence of We sampled coastal wetlands, including rocky shores, sandy beaches, tidal marshes, and mangrove swamps, around the Andaman group of the Andaman & Nicobar Islands, Union Territory, in India. Read More

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New Insights into the Microplastic Enrichment in the Blue Carbon Ecosystem: Evidence from Seagrass Meadows and Mangrove Forests in Coastal South China Sea.

Environ Sci Technol 2021 04 11;55(8):4804-4812. Epub 2021 Mar 11.

Ocean College, Zhejiang University, 1 Zheda Road, Zhoushan, Zhejiang 316021, China.

Microplastics were recently found to aggregate in the blue carbon ecosystems (BCEs), which are known for their ability to store carbon by slowing down the water flow. However, evidence is largely lacking on how the accumulation of microplastics is related to carbon sequestration in BCEs and if this trap effect is driven by its biological characteristics. In this study, the trap effect of microplastics by BCEs was evaluated for various seagrasses (, , and ) and mangroves ( and ). Read More

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Mangrove carbon and nutrient accumulation shifts driven by rapid development in a tropical estuarine system, northeast Brazil.

Mar Pollut Bull 2021 May 6;166:112219. Epub 2021 Mar 6.

Departamento de Oceanografia Geológica, UFPE, Recife, PE, Brazil.

Mangrove environments are important for maintaining biodiversity and carbon cycling. However, these systems are being degraded at alarming rates around the world, particularly in rapidly developing regions. Here, we examine a sediment profile from a mangrove forest near a large port complex at Suape, northeast Brazil, in order to assess the impact of rapid urbanization and industrialization. Read More

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Estimating blue carbon sequestration under coastal management scenarios.

Sci Total Environ 2021 Feb 22;777:145962. Epub 2021 Feb 22.

Deakin University School of Life and Environmental Sciences, Warrnambool, VIC 3280, Australia.

Restoring and protecting "blue carbon" ecosystems - mangrove forests, tidal marshes, and seagrass meadows - are actions considered for increasing global carbon sequestration. To improve understanding of which management actions produce the greatest gains in sequestration, we used a spatially explicit model to compare carbon sequestration and its economic value over a broad spatial scale (2500 km of coastline in southeastern Australia) for four management scenarios: (1) Managed Retreat, (2) Managed Retreat Plus Levee Removal, (3) Erosion of High Risk Areas, (4) Erosion of Moderate to High Risk Areas. We found that carbon sequestration from avoiding erosion-related emissions (abatement) would far exceed sequestration from coastal restoration. Read More

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February 2021

Mangrove growth response to experimental warming is greatest near the range limit in northeast Florida.

Ecology 2021 Mar 4:e03320. Epub 2021 Mar 4.

Department of Biology and Center for Biodiversity and Ecosystem Stewardship, Villanova University, Villanova, Pennsylvania, 19085, USA.

Shrubs are invading into grasslands around the world, but we don't yet know how these shrubs will fare in a warmer future. In ecotonal coastal wetland ecosystems, woody mangroves are encroaching into herbaceous salt marshes owing to changes in temperature, precipitation, and sediment dynamics. Increasing mangrove biomass in wetlands often increases carbon storage, which is high in these productive ecosystems, but little is known about how mangrove growth will change in response to warming. Read More

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Population parameters of the orange mud crab (Herbst, 1796) from the Sundarban mangrove forest in Bangladesh.

Heliyon 2021 Feb 12;7(2):e06223. Epub 2021 Feb 12.

Fisheries and Marine Resource Technology Discipline, Khulna University, Khulna, 9208, Bangladesh.

Population parameters of orange mud crab () were estimated, aiming to determine sex ratios, carapace width-body weight (CW-BW) relationships, asymptotic width (CW), growth coefficient (K), mortality (Z, M, and F), recruitment and level of exploitation (E) in the Sundarban mangrove forest, located in the south-western part of Bangladesh. Year-round samples were collected using hook-lines and baited traps, the population parameters were measured from CW frequency data using FiSAT-II analyzer. The study showed that the overall male and female sex ratio was 1:0. Read More

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February 2021

Expansion of the mangrove species Rhizophora mucronata in the Western Indian Ocean launched contrasting genetic patterns.

Sci Rep 2021 Mar 2;11(1):4987. Epub 2021 Mar 2.

Ecology and Biodiversity, Vrije Universiteit Brussel, Pleinlaan 2, 1050, Elsene, Brussels, Belgium.

Estimates of population structure and gene flow allow exploring the historical and contemporary processes that determine a species' biogeographic pattern. In mangroves, large-scale genetic studies to estimate gene flow have been conducted predominantly in the Indo-Pacific and Atlantic region. Here we examine the genetic diversity and connectivity of Rhizophora mucronata across a > 3,000 km coastal stretch in the Western Indian Ocean (WIO) including WIO islands. Read More

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Diverse and abundant antibiotic resistance genes in mangrove area and their relationship with bacterial communities - A study in Hainan Island, China.

Environ Pollut 2021 May 8;276:116704. Epub 2021 Feb 8.

College of Life Science, Hainan Normal University, Haikou, 571158, China.

Antibiotic resistance genes (ARGs) are emerging contaminants in the environment and have been highlighted as a worldwide environmental and health concern. As important participants in the biogeochemical cycles, mangrove ecosystems are subject to various anthropogenic disturbances, and its microbiota may be affected by various contaminants such as ARGs. This study selected 13 transects of mangrove-covered areas in Hainan, China for sediment sample collection. Read More

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Evaluation of metal contamination in mangrove ecosystems near oil refining areas using chemometric tools and geochemical indexes.

Mar Pollut Bull 2021 May 23;166:112179. Epub 2021 Feb 23.

Pós-Graduação em Geoquímica: Petróleo e Meio Ambiente (POSPETRO), Instituto de Geociências, Universidade Federal da Bahia (UFBA), Rua Barão de Jeremoabo, s/n, 40170-290 Salvador, Bahia, Brazil.

The northern and northeastern portion of the Todos os Santos Bay (TSB) is known for the presence of an oil refinery in addition to the development of other activities with significant potential for impact on the environment. 30 samples of superficial mangrove sediment were collected in two different locations: on the banks of the São Paulo River near the Landulpho Alves Mataripe Refinery (RLAM) and at Caboto Beach, a place that was once a control point in studies of metal pollution. After the determination of potentially toxic elements (Al, As, Cd, Cr, Cu, Fe, Mn, Ni, Pb, Ti, V, Zn), the quality of the sediment was evaluated using the concentrations of these elements associated with geochemical parameters (TOC, P, S, and granulometry). Read More

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Anthropogenic and environmental influences on nutrient accumulation in mangrove sediments.

Mar Pollut Bull 2021 Apr 20;165:112174. Epub 2021 Feb 20.

National Marine Science Centre, School of Environment, Science and Engineering, Southern Cross University, Coffs Harbour, NSW 2450, Australia.

Here we provide a global review on nutrient accumulation rates in mangroves which were derived from sixty-nine dated sediment cores, addressing environmental and anthropogenic influences. Conserved mangroves presented nitrogen and phosphorous accumulation rates near to 5.8 ± 2. Read More

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Health risk assessment of heavy metal and its mitigation by glomalin-related soil protein in sediments along the South China coast.

Environ Pollut 2020 Aug 11;263(Pt A):114565. Epub 2020 Apr 11.

Key Laboratory of Ministry of Education for Coastal and Wetland Ecosystems, Xiamen University, Xiamen, 361102, China; State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen, 361102, China. Electronic address:

Knowledge regarding the exposure risk of heavy metals in estuarine wetland is important for people (especially fishermen and consumers of local fish) living in the coastal area and the coastal reclamation. Here, we assessed the ecological and human health risks of sediment-associated metals in the large-scale estuary area based on different sediment textures (Mud, Mud-Sand, and Sand). To investigate the potential impact of terrestrial material on the contamination risks, glomalin-related soil protein (GRSP), a recalcitrant soil protein fraction, was used. Read More

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Fecal sterols as sewage contamination indicators in Brazilian mangroves.

Mar Pollut Bull 2021 Apr 17;165:112149. Epub 2021 Feb 17.

Núcleo de Estudos em Manguezais (NEMA), Faculdade de Oceanografia, Universidade do Estado do Rio de Janeiro, 20550-013 Rio de Janeiro, Brazil.

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. Read More

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Effects of mangrove cover on coastal erosion during a hurricane in Texas, USA.

Ecology 2021 04 13;102(4):e03309. Epub 2021 Mar 13.

Department of Marine Biology, Texas A&M University at Galveston, Galveston, Texas, 77553, USA.

We tested the hypothesis that mangroves provide better coastal protection than salt marsh vegetation using 10 1,008-m plots in which we manipulated mangrove cover from 0 to 100%. Hurricane Harvey passed over the plots in 2017. Data from erosion stakes indicated up to 26 cm of vertical and 970 cm of horizontal erosion over 70 months in the plot with 0% mangrove cover, but relatively little erosion in other plots. Read More

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