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Gyedu-Ababio, Thomas; Furstenberg, J.P.; Baird, Dugald; Vanreusel, Ann

doi:10.1023/a:1003617825985

Cited by 71 publications

(15 citation statements)

References 20 publications

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“…Some of them, such as Sabatieria sp. and Sphaerolaimus sp., are known to inhabit stressed and anoxic sediments (Vincx et al 1990;Vanreusel 1990;Gyedu-Ababio et al 1999;Boyd et al 2000;Mirto et al 2002). The genus Ptycholaimellus was also encountered frequently in sandy and muddy sediments as part of this study with high abundance in particular in muddy sedimentary sites, indicating that food resources might be plentiful in the study area or that there is an anoxic sediment layer relatively close to the surface layers of the sediment.…”

Section: Discussionmentioning

confidence: 69%

Checklist of free-living marine nematodes from intertidal sites along the central west coast of India

Bhadury¹,

Mondal²,

Ansari³

et al. 2015

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Abstract:The present study provides a checklist of freeliving marine nematode species from nine intertidal sites located along the central west coast of India covering an area between latitudes 16°33′08.47″ N and 16°38′50.75″ N and longitudes 073°19′30.13″ E and 073°23′34.97″ E. The list includes 33 species of marine nematodes belonging to 20 genera and 13 families. The occurrence of nematode species identified appears to be correlated to character of the sediments across sampled intertidal sites. Ten families were encountered in sandy sites while in muddy sites the number was ten. Three families, namely Camacolaimidae, Ironidae, and Microlaimidae, were exclusive to the sandy sites, while Anoplostomatidae, Comesomatidae, and Linhomoeidae were only found across muddy sites. Some of the dominant free-living marine nematode groups encountered across all sites was represented by the genera Ptycholaimellus, Viscosia, Oncholaimus, Halalaimus, and species such as Sphaerolaimus balticus and Metachromadora suecica.

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Section: Discussionmentioning

confidence: 69%

Checklist of free-living marine nematodes from intertidal sites along the central west coast of India

Bhadury¹,

Mondal²,

Ansari³

et al. 2015

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“…These nematode genera are regularly found in marine shallow waters, but they are particularly abundant in organically enriched silt bottoms (Gyedu-Ababio et al 1999;Fonseca and Netto 2006;Johnson et al 2007). They are all characterized by low oxygen consumption rates (Warwick and Price 1979) and thus, of advantage in oxygen-poor, organically enriched sediments.…”

Section: Discussionmentioning

confidence: 99%

The response of nematode assemblages to intensive mussel farming in coastal sediments (Southern Brazil)

Netto

Valgas

2009

Environ Monit Assess

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The impact of mussel farms on the benthic environment was investigated using free-living nematode assemblages as indicators of environmental condition of the Enseada do Brito, a shallow embayment in South Brazil. The studied area is located at the State of Santa Catarina, responsible for 90% of the production of mussel farmed in the country. Samplings were carried out quarterly, from July 2004 to May 2005, below mussel ropes and at control sites located 300 m apart from the longlines. The results suggested that the mussel culture changed ecological functioning of the benthic environment at studied coastal embayment. The intense organic loads due to the biodeposition of the mussel farms, which had been in production for more than 10 years, have turned fine and well-sorted sand bottoms into a muddy deposit with significantly higher total organic content than the control. The number of nematode genera, diversity, dominance and trophic diversity were significantly lower under the mussel farms than at the control sites. The mussel farms biodeposition had also affected the temporal variability of nematode assemblages, which was detected only for samples at the control sites. The low depth and environmental energy, together with the age of the farms, were probably responsible for the observed changes in the nematode assemblages.

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“…Furthermore, while Parodontophora was the prevailing genus in most estuarine sections, Theristus was the most dominant genus in the dammed upstream part, suggesting that this genus is highly tolerant to elevated heavy metal concentrations (especially Hg), low DO and high TSS. Interestingly, the genus Theristus is normally considered as a typical 'colonizer', identified as an indicator of organic pollution in the Swartkops estuary of South Africa [69]. Moreover, Terschellingia, as the third most important genus in the dammed upstream part, is reported to be tolerant to pollution and anoxia [22,26].…”

Section: Differences In Nematode Communities Explained By Differencesmentioning

confidence: 99%

The Effect of a Dam Construction on Subtidal Nematode Communities in the Ba Lai Estuary, Vietnam

et al. 2020

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Nematode communities and relevant environmental variables were investigated to assess how the presence of a dam affects the Ba Lai estuary benthic ecosystem, in comparison to the adjacent dam-free estuary Ham Luong. Both estuaries are part of the Mekong delta system in Vietnam. This study has shown that the dam’s construction had an effect on the biochemical components of the Ba Lai estuary, as observed by the local increase in total suspended solids and heavy metal concentrations (Hg and Pb) and by a significant oxygen depletion compared to the natural river of Ham Luong. The nematode communities were also different between the two estuaries in terms of density, genus richness, Shannon–Wiener diversity, and dominant genera. The Ba Lai estuary exhibited lower nematode densities but a higher diversity, while the genus composition only slightly differed between estuaries. The results indicate that the present nematode communities may be well adapted to the natural organic load, to the heavy metal accumulation and to the oxygen stress in both estuaries, but the dam presence may potentially continue to drive the Ba Lai’s ecosystem to its tipping point.

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Untitled

Cited by 71 publications

References 20 publications

Checklist of free-living marine nematodes from intertidal sites along the central west coast of India

Checklist of free-living marine nematodes from intertidal sites along the central west coast of India

The response of nematode assemblages to intensive mussel farming in coastal sediments (Southern Brazil)

The Effect of a Dam Construction on Subtidal Nematode Communities in the Ba Lai Estuary, Vietnam

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