Response of estuarine free-living nematode assemblages to organic enrichment: an experimental approach

Kandratavicius, Noelia; Ward, Catalina Pastor de; Venturini, Natalia; Giménez, Luis; Rodríguez, M.; Muñiz, Pablo

doi:10.3354/meps12699

Cited by 11 publications

(5 citation statements)

References 66 publications

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“…While some works have found that organic enrichment increases nematode abundances (Dal Zotto et al, 2016;Soltwedel et al, 2018), there is evidence to suggest that nematode responses to organic pollutants may not be consistent (see Bertocci et al, 2019). Results from environmental monitoring works even suggest that organic enrichment and sewage sludge are too broad for categorizing environmental pollutants, as individual components of organic enrichment or sewage pollutants lead to unique responses in nematode assemblages (see Xu et al, 2014;Caswell et al, 2018;Kandratavicius et al, 2018;Sahraeian et al, 2020). Therefore, it may be challenging to assert specific conclusions about the ecological quality status of an estuary or bay using standard nematode community metrics.…”

Section: Nematodes As Indicators Of Organic Enrichmentmentioning

confidence: 99%

“…Therefore, it may be challenging to assert specific conclusions about the ecological quality status of an estuary or bay using standard nematode community metrics. Instead, researchers suggest that functional metrics, such as the index of trophic diversity (Kandratavicius et al, 2018) or biomass spectra measures (Losi et al, 2013), may be more appropriate to assess the effects of organic enrichment in marine systems in some cases as taxonomic patterns may not always be consistent (Sahraeian et al, 2020).…”

Section: Nematodes As Indicators Of Organic Enrichmentmentioning

confidence: 99%

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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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Section: Nematodes As Indicators Of Organic Enrichmentmentioning

confidence: 99%

Section: Nematodes As Indicators Of Organic Enrichmentmentioning

confidence: 99%

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

Ridall

Ingels

2021

Front. Mar. Sci.

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“…Different nematode species have also shown variable susceptibility to crude oil or diesel pollution (Stark et al ., 2017; Monteiro et al ., 2018). Studies of organic and/or sewage‐enriched pollution have shown inconsistent nematode abundances (Bertocci et al ., 2019; Sahraeian et al ., 2020), highlighting the need for additional pollution evaluation metrics such as an index of trophic diversity based on nematode trophic guild compositions (Kandratavicius et al ., 2018). Aquacultural pollution has also been found to affect nematode assemblage compositions, with a shift from long‐lived, slow‐growing genera to short‐lived genera (Lacoste et al ., 2020).…”

Section: Key Aquatic Invertebrates In Standardised Aquatic Ecotoxicol...mentioning

confidence: 99%

A broad‐taxa approach as an important concept in ecotoxicological studies and pollution monitoring

Rosner,

Ballarin,

Barnay‐Verdier

et al. 2023

Biological Reviews

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Aquatic invertebrates play a pivotal role in (eco)toxicological assessments because they offer ethical, cost‐effective and repeatable testing options. Additionally, their significance in the food chain and their ability to represent diverse aquatic ecosystems make them valuable subjects for (eco)toxicological studies. To ensure consistency and comparability across studies, international (eco)toxicology guidelines have been used to establish standardised methods and protocols for data collection, analysis and interpretation. However, the current standardised protocols primarily focus on a limited number of aquatic invertebrate species, mainly from Arthropoda, Mollusca and Annelida. These protocols are suitable for basic toxicity screening, effectively assessing the immediate and severe effects of toxic substances on organisms. For more comprehensive and ecologically relevant assessments, particularly those addressing long‐term effects and ecosystem‐wide impacts, we recommended the use of a broader diversity of species, since the present choice of taxa exacerbates the limited scope of basic ecotoxicological studies.This review provides a comprehensive overview of (eco)toxicological studies, focusing on major aquatic invertebrate taxa and how they are used to assess the impact of chemicals in diverse aquatic environments. The present work supports the use of a broad‐taxa approach in basic environmental assessments, as it better represents the natural populations inhabiting various ecosystems. Advances in omics and other biochemical and computational techniques make the broad‐taxa approach more feasible, enabling mechanistic studies on non‐model organisms. By combining these approaches with in vitro techniques together with the broad‐taxa approach, researchers can gain insights into less‐explored impacts of pollution, such as changes in population diversity, the development of tolerance and transgenerational inheritance of pollution responses, the impact on organism phenotypic plasticity, biological invasion outcomes, social behaviour changes, metabolome changes, regeneration phenomena, disease susceptibility and tissue pathologies. This review also emphasises the need for harmonised data‐reporting standards and minimum annotation checklists to ensure that research results are findable, accessible, interoperable and reusable (FAIR), maximising the use and reusability of data. The ultimate goal is to encourage integrated and holistic problem‐focused collaboration between diverse scientific disciplines, international standardisation organisations and decision‐making bodies, with a focus on transdisciplinary knowledge co‐production for the One‐Health approach.

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“…Meiofauna are considered bioindicator organisms, which provide advantages over the use of macrofauna due to their higher abundance and species diversity, small size, rapid turnover, lack of larval dispersal and presence of both tolerant and sensitive species (Danovaro et al, 2009). Some studies have shown faster response of meiofauna compared to macrofauna (Balsamo et al, 2010) and a change in community structure at high concentrations of organic matter and contaminants resulting in a community shift toward more tolerant taxa (Moreno et al, 2008;Kandratavicius et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

The Paradox of an Unpolluted Coastal Site Facing a Chronically Contaminated Industrial Area

et al. 2022

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Present and past industrial activities in coastal areas have left us a legacy of contamination and habitat degradation with potential implications for human health. Here, we investigated a coastal marine area enclosed in a Site of National Interest (SNI) of the central-western Adriatic (Mediterranean Sea), where priority actions of environmental remediation are required by governmental laws due the high environmental and human risk, and that is off-limits to any human activity since 2002. In particular, our investigation was focused on an area located in front of a chemical industry dismissed more than 3 decades ago. We report that the concentrations of heavy-metal and organic contaminants in the investigated sediments were generally lower than those expected to induce detrimental biological effects. Meiofaunal abundance, biomass and community structure changed among stations, but regardless of the distance from the abandoned industrial plant. Taxa richness within the SNI did not change significantly compared to the controls and the lack of some taxa in the SNI transects was not due to the contamination of the SNI area. The results of this study suggest a natural recovery of the marine area over 2 decades of restrictions on human activities, including fishing and shipping bans. If the hypothesis of the natural recovery of this SNI will be further confirmed by other studies, the plans for the identification and monitoring of the most polluted areas in Italy should necessarily be redefined also in the light of the Water Framework, the Marine Strategy Framework and the Environmental Quality Standard Directives.

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Response of estuarine free-living nematode assemblages to organic enrichment: an experimental approach

Cited by 11 publications

References 66 publications

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

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

A broad‐taxa approach as an important concept in ecotoxicological studies and pollution monitoring

The Paradox of an Unpolluted Coastal Site Facing a Chronically Contaminated Industrial Area

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