Azoic sediments and benthic foraminifera: Environmental quality in a subtropical coastal lagoon in the gulf of California

Sánchez, Alberto; Gómez-León, Adriana

doi:10.1016/j.envres.2023.117924

Cited by 3 publications

(1 citation statement)

References 75 publications

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“…However, some studies showed these animals can become dominant in specific habitats, including some riverine and fringe mangroves (Sarma and Wilsanand, 1994;Gomes et al, 2002;Santos et al, 2009;Ostmann et al, 2012;Annapurna et al, 2015;Cepeda et al, 2022b). In addition, low abundant taxa have shown to be useful when characterizing meiofaunal assemblages in certain areas or when assessing meiofauna sensitivity to pollutants (Vanreusel, 1990;Giere, 2009;Sevastou et al, 2013;Sańchez and Goḿez-Leoń, 2024). Currently, 42 species of Kinorhyncha are known to inhabit mangroves (Cepeda et al, 2022a, b;Sørensen, 2023).…”

Section: Introductionmentioning

confidence: 99%

Environmental drivers modelling the mangrove Kinorhyncha community along an urban-to-natural gradient in French Guiana (western Atlantic Ocean)

Cepeda,

Sánchez,

Spedicato

et al. 2024

Front. Mar. Sci.

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Meiofaunal communities are dominated by free-living nematodes and harpacticoid copepods. Most of the studies defining the environmental drivers that influence meiofauna focus on these profuse groups. The ‘rare’ meiofaunal organisms (densities <5%) are frequently overlooked, making it difficult to know which abiotic variables influence their populations, or their ecological role in the benthic ecosystems. In this study, we explore the ecological factors that characterize a low human-polluted mangrove in French Guiana (western Atlantic Ocean) along an urban-to-natural gradient, focusing on the ‘rare’ phylum Kinorhyncha. This taxon seems to be mainly influenced by sediment size, being more abundant in silty sediments. The presence of microorganisms also enhances the community, likely due to a higher food availability. Oppositely, some trace metals of both lithogenic and anthropogenic origin, as well as predominance of coarser sediment particles, seem to negatively affect their populations. The importance of including the lesser abundant groups of meiofauna in ecological studies is evident, since it allows to have a better idea of the ecological state of marine benthic environments.

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Section: Introductionmentioning

confidence: 99%

Environmental drivers modelling the mangrove Kinorhyncha community along an urban-to-natural gradient in French Guiana (western Atlantic Ocean)

Cepeda,

Sánchez,

Spedicato

et al. 2024

Front. Mar. Sci.

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Spatial and temporal characterization of sediments and hyporheic meiofauna in a section of an urban river

Carvalho Filho,

Clemente,

Santos

et al. 2024

RBRH

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This study characterized the hyporheic zone of a stretch of the Ipojuca River through analysis of the sediments and meiofauna of this environment. Samples were collected at two points (Point 1: 8°17'28.2” S; 35°59'38.6” W and Point 2: 8°17'48.1” S; 35°56'12.2” W) and in three periods: summer (November/2018), transition period (March/2018), and winter (June/2018). The most representative material was classified as silt, varying between coarse, medium, and fine. 678 meiofauna individuals were counted, distributed in four more representative taxa, Rotifera (41%), Nematoda (40%), Annelida (11%), and Copepoda (5%). The PERMANOVA analysis indicated significant differences for the period (p = 0.0009) and space (p = 0.0261) factors. There was no significant relationship between the meiofauna community structure and hyporheic environment variables. The observed differences may be linked to water quality, which also varied between the points and periods studied.

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Pattern of total organic carbon in sediments within the mangrove ecosystem

Li,

Long,

Dai

et al. 2024

Front. Mar. Sci.

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The sedimentary total organic carbon (TOC) in mangrove ecosystems plays an essential role in the global carbon storage. Nevertheless, little information is available about the pattern of TOC in sediments varying from bare and flat to those beneath mangroves. To find out the roles of new-developing mangroves in sedimentary TOC accumulation, a serials of sediment samples were collected from the creek mudflat zone (CMZ) through the fringe mangrove zone (FMZ) to the interior mangrove zone (IMZ) in young mangrove system of Nanliu River Delta in China. Sediment compositions, TOC, total nitrogen (TN), molar C/N ratios, and carbon stable isotopes (δ13C) were analyzed to examine the accumulation processes. The results revealed the distinct differences in the sedimentary TOC values, with an obvious increasing trend from the CMZ and FMZ to the IMZ. We quantified that terrestrials, marine-derived and mangrove-derived sources contributed 39.2-74.1%, 24.7-63.1% and 0.9-6.9%, respectively, to the sedimentary TOC in the mangrove ecosystems. The organic carbon accumulation rates ranged from 2.59 to 269.60 g•m-2•a-1, with values of 8.77 ± 19.87, 24.78 ± 12.53, 167.19 ± 57.79 g•m-2•a-1 for CMZ, FMZ and IMZ. Our work highlights information showing that young mangrove forests of the tropical delta have important potential for carbon storage.

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Azoic sediments and benthic foraminifera: Environmental quality in a subtropical coastal lagoon in the gulf of California

Cited by 3 publications

References 75 publications

Environmental drivers modelling the mangrove Kinorhyncha community along an urban-to-natural gradient in French Guiana (western Atlantic Ocean)

Environmental drivers modelling the mangrove Kinorhyncha community along an urban-to-natural gradient in French Guiana (western Atlantic Ocean)

Spatial and temporal characterization of sediments and hyporheic meiofauna in a section of an urban river

Pattern of total organic carbon in sediments within the mangrove ecosystem

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