Meiofauna distribution in a mangrove forest exposed to shrimp farm effluents (New Caledonia)

Patrona, Luc Della; Marchand, Cyril; Hubas, Cédric; Molnar, Nathalie; Deborde, Jonathan; Méziane, Tarik

doi:10.1016/j.marenvres.2016.05.028

Cited by 25 publications

(11 citation statements)

References 56 publications

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“…In low oxygen concentrations, Foraminifera set up specific mechanisms, in particular decreasing their size [85,86]. In the present study, Kinorhyncha reached almost 5% (station 2) of the overall meiofauna, which is in the range of values reported from stressful environments (e.g., wide fluctuations of salinities [87][88][89], while they are usually less than <5% in shallow waters and deep-sea ecosystems [30].…”

Section: Overall Meiofauna Communitysupporting

confidence: 51%

“…Once mangroves are widely degraded, recovery of mangroves meiofauna communities occurs after 5 to 10 years reforestation [28]. It has been shown that meiofauna identification, even on a low taxonomic level (family, class or phylum) could provide sufficient information to characterize the community and the ecosystems health [20,29], especially in mangrove sediments [30]. A recent review about the use of meiofauna to assess environmental impact proposed four taxonomic groups sensitive to different kind of disturbances: Foraminifera, Nematoda, Copepoda, and Ostracoda [21].…”

Section: Introductionmentioning

confidence: 99%

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First Assessment of the Benthic Meiofauna Sensitivity to Low Human-Impacted Mangroves in French Guiana

Michelet

Zeppilli

Hubas

et al. 2021

Forests

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Bioindicators assess the mangroves ecological state according to the types of pressures but they differ with the ecosystem’s specificities. We investigated benthic meiofauna diversity and structure within the low human-impacted mangroves in French Guiana (South America) in response to sediment variables with various distances to the main city. Contaminant’s concentrations differed among the stations, but they remained below toxicity guidelines. Meiofauna structure (Foraminifera, Kinorhyncha, Nematoda) however varied accordingly. Nematode’s identification brought details on the sediment’s quality. The opportunistic genus Paraethmolaimus (Jensen, 1994) strongly correlated to the higher concentrations of Hg, Pb. Anoxic sediments were marked by organic enrichment in pesticides, PCB, and mangrove litter products and dominance of two tolerant genus, Terschellingia (de Man, 1888) and Spirinia (Gerlach, 1963). In each of these two stations, we found many Desmodora individuals (de Man, 1889) with the presence of epibionts highlighting the nematodes decreased fitness and defenses. Oxic sediments without contaminants were distinguished by the sensitive genera Pseudocella (Filipjev, 1927) and a higher diversity of trophic groups. Our results suggested a nematodes sensitivity to low contaminants concentrations. Further investigations at different spatio-temporal scales and levels of deterioration, would be necessary to use of this group as bioindicator of the mangroves’ ecological status.

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Section: Overall Meiofauna Communitysupporting

confidence: 51%

Section: Introductionmentioning

confidence: 99%

First Assessment of the Benthic Meiofauna Sensitivity to Low Human-Impacted Mangroves in French Guiana

Michelet

Zeppilli

Hubas

et al. 2021

Forests

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“…Frequently, the presence of kinorhynchs is reported in these studies as one of the Brare meiofaunal taxa^, representing < 1% of the total abundance (Hodda and Nicholas 1986;Schrijvers et al 1997;Della Patrona et al 2016), and the phylum rarely appears with high abundance (Sarma and Wilsanand 1994;Annapurna et al 2015). In the Itamaraca mangrove area of Brazil (Gomes et al 2002;Santos et al 2009), kinorhynchs ranked third in dominance after nematodes and copepods.…”

Section: Mangrove Meiofaunamentioning

confidence: 88%

Characteristics of meiofauna in extreme marine ecosystems: a review

et al. 2017

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Extreme marine environments cover more than 50% of the Earth's surface and offer many opportunities for investigating the biological responses and adaptations of organisms to stressful life conditions. Extreme marine environments are sometimes associated with ephemeral and unstable ecosystems, but can host abundant, often endemic and welladapted meiofaunal species. In this review, we present an integrated view of the biodiversity, ecology and physiological responses of marine meiofauna inhabiting several extreme marine environments (mangroves, submarine caves, Polar ecosystems, hypersaline areas, hypoxic/anoxic environments, hydrothermal vents, cold seeps, carcasses/sunken woods, deep-sea canyons, deep hypersaline anoxic basins [DHABs] and hadal zones). Foraminiferans, nematodes and copepods are abundant in almost all of these habitats and are dominant in deep-sea ecosystems. The presence and dominance of some other taxa that are normally less common may be typical of certain extreme conditions. Kinorhynchs are particularly well adapted to cold seeps and other environments that experience drastic changes in salinity, rotifers are well represented in polar ecosystems and loriciferans seem to be the only metazoan able to survive multiple stressors in DHABs. As well as natural processes, human activities may generate stressful conditions, including deoxygenation, acidification and rises in temperature. The behaviour and physiology of different meiofaunal taxa, such as some foraminiferans, nematode and copepod species, can provide vital information on how organisms may respond to these challenges and can provide a warning signal of anthropogenic impacts. From an evolutionary perspective, the discovery of new meiofauna taxa from extreme environments very often sheds light on phylogenetic relationships, while understanding how meiofaunal organisms are able to survive or even flourish in these conditions can explain evolutionary pathways. Finally, there are multiple potential economic benefits to be gained from ecological, biological, physiological and evolutionary studies of meiofauna in extreme environments. Despite all the advantages offered by meiofauna studies from extreme environments, there is still an urgent need to foster meiofauna research in terms of composition, ecology, biology and physiology focusing on extreme environments.

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“…However, the effects of aquaculture waste in benthic systems are dependent on the type of farming, and the accuracy of assessment depends on the organisms being studied and used as indicators. Della Patrona et al (2016) postulated that the abundance of phytoplankton within shrimp farm effluent may promote epistrate-feeding nematode abundance, and work done by Riera et al (2012) and Mirto et al (2014) found that nematode abundances increased in sediments below fish cages. However, work by Mirto et al (2010) in the Mediterranean found that meiofaunal abundances may increase or decrease based on the site and farm characteristics, which was later supported by Mirto et al (2012).…”

Section: Nematodes As Indicators Of Aquaculture Pollutionmentioning

confidence: 99%

Suitability of Free-Living Marine Nematodes as Bioindicators: Status and Future Considerations

Ridall

Ingels

2021

Front. Mar. Sci.

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Nematodes are among the most abundant organisms on Earth, and have important roles in terrestrial, freshwater, and marine ecosystems. Free-living marine nematodes have been used successfully as indicators of biological health and ocean pollution for at least the past 40 years, but their use as bioindicators is not ubiquitous. They have been most often used specifically as indicators of heavy metal and hydrocarbon pollution, with far fewer instances of their use as indicators of biological, environmental, or physical perturbations. Although free-living marine nematodes are among the best bioindicators owing to their worldwide distributions, abundances, and genus- and species-specific responses to environmental pollution, there are still some challenges that prevent their use globally. Here, we present a review of characteristics that make free-living marine nematodes excellent bioindicators, recent studies that have used them as bioindicators, and suggestions for future directions in the use of these fauna as indicators in the marine environment. Specifically, we consider the use of marine nematodes for microplastics (an understudied class of pollutants that are a future threat to global biodiversity), the value of current nematode indices as measures of ecosystem health, and the importance of improved and continued international collaboration in the field of marine nematology.

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Meiofauna distribution in a mangrove forest exposed to shrimp farm effluents (New Caledonia)

Cited by 25 publications

References 56 publications

First Assessment of the Benthic Meiofauna Sensitivity to Low Human-Impacted Mangroves in French Guiana

First Assessment of the Benthic Meiofauna Sensitivity to Low Human-Impacted Mangroves in French Guiana

Characteristics of meiofauna in extreme marine ecosystems: a review

Suitability of Free-Living Marine Nematodes as Bioindicators: Status and Future Considerations

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