Benthic Superheroes: Living Foraminifera from Three Bays in the Mission-Aransas National Estuarine Research Reserve, USA

Buzas-Stephens, Pamela; Buzas, Martin A.; Price, Jonathan D.; Courtney, Chandra Henry

doi:10.1007/s12237-018-0425-4

Cited by 9 publications

(5 citation statements)

References 32 publications

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“…For instance, some authors considered Haynesina germanica as resistant to pollution, and suggested that its increasing dominance may be considered as an indicator of pollution impacts from organic matter, heavy metals and/or hydrocarbons [35,90]. However, many studies describe H. germanica as a dominant species in natural estuarine mudflats [27,29,33,81,83,88,[91][92][93][94][95]. In the Auray and Vie estuaries studied here, H. germanica was dominant (up to 98%) at most sites.…”

Section: Foraminiferal Indices Of Environmental Qualitymentioning

confidence: 87%

Foraminiferal Distribution in Two Estuarine Intertidal Mudflats of the French Atlantic Coast: Testing the Marine Influence Index

Fouet

Coynel

Héliot

et al. 2022

Water

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This study focuses on the foraminiferal distribution on intertidal mudflats of two contrasted estuaries (Auray and Vie) along the French Atlantic coast. In both estuaries, the foraminiferal communities are dominated by Haynesina germanica and the Ammonia tepida group. Stations located near the outlets show a high diversity and abundance of species of the genus Elphidium. Stations in the inner estuary show a higher proportion of agglutinated species (Ammotium salsum, Ammobaculites agglutinans). Multivariate statistical analysis suggests that the distance to the sea and the percentage of fine sediment (<63 µm) are the two main parameters explaining the foraminiferal distribution. Chemical analyses of the sediment show that the two studied estuaries are not affected by major anthropogenic pollution, so that the faunas should mainly reflect the natural controlling parameters. Three indices of environmental quality commonly used in coastal areas show counter-intuitive differences between stations, suggesting that these indices may be less reliable for use in intertidal estuarine mudflats. The newly developed Marine Influence Index (MII) integrates three major ecological factors: the position of the sampling point on the salinity gradient, the emergence time at low tide and the relative importance of fresh water discharge. In our dataset, MII shows significant correlations with the controlling environmental parameters (distance to the sea, percentage grains <63 µm), as well as with the foraminiferal patterns (PCA axis 1, species richness, percentage of Elphidium spp. and Quinqueloculina spp.). These results suggest that the MII explains a substantial part of the faunal variability on estuarine intertidal mudflats, and can be used to detect deviations from the natural distribution patterns in response to anthropogenic pollution.

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Section: Foraminiferal Indices Of Environmental Qualitymentioning

confidence: 87%

Foraminiferal Distribution in Two Estuarine Intertidal Mudflats of the French Atlantic Coast: Testing the Marine Influence Index

Fouet

Coynel

Héliot

et al. 2022

Water

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“…Table 1). As already mentioned, agglutinated foraminifera are known to usually dominate at lower salinities, and a change from a calcareous to an agglutinated assemblage visible in the sedimentary record may be taken as evidence of a change (reduction) in salinity (Leckie and Olson, 2003;Buzas-Stephens et al 2018). The stage in question corresponds to the late-LS stage of Binczewska et al (2018), characterized by low salinities and the domination of Reophax dentaliniformis, an agglutinated species occurring with low densities, and the scarcity or absence of calcareous foraminifera.…”

Section: Foraminifera-based Stratigraphy and Environmental Effectsmentioning

confidence: 95%

“…The post-mortem decalcification/dissolution of foraminiferal tests is a widespread and well-known effect (e.g. Christiansen et al 1996;Leckie & Olson 2003;Buzas-Stephens 2005;Murray & Alve 2011;Haynert et al 2012;Binczewska et al 2018;Buzas-Stephens et al 2018). To quote Murray and Alve (2011), "There is abundant evidence of syndepositional dissolution of calcareous tests in certain modern environments including both terrigenous and carbonate sediments" (p. 11).…”

Section: State Of Preservationmentioning

confidence: 99%

The foraminiferal record in the Holocene evolution of the Mecklenburg Bay (south-western Baltic Sea)

Kostecki

Radziejewska

2021

Oceanological and Hydrobiological Studies

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Foraminiferal assemblages were analyzed in a 620-cm long core retrieved from the central part of the Mecklenburg Bay (MB, south-western Baltic Sea) to aid in the reconstruction of environmental changes occurring in the area during the Holocene and to complement a set of previously investigated palaeoenvironmental proxies. A total of five foraminifera-based stratigraphic units were identified, including an initial 80-cm thick layer devoid of foraminifera. The next two units featured an increasing abundance of the foraminiferal assemblage dominated by the calcareous Ammonia group species. Nearly all the calcareous foraminifera found in the core were decalcified. Following the maximum abundance within the 470–410 cm layer, the foraminiferal abundance declined sharply and the assemblage’s dominance structure changed to domination of the agglutinated foraminiferal species, Eggerelloides scaber, which continued up to the top of the core and marked a pronounced shift in environmental conditions (shallower depth, lower salinity, more dynamic sedimentation conditions). The foraminifera-based stratigraphy of the core proved to be complementary to that emerging from previous analyses of diatoms and sediment geochemistry.

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“…(2012). About 10 cm 3 of the stained samples was washed through a 500 μm sieve and then a 63 μm sieve (Buzas-Stephens et al ., 2018). Only the 63 μm sieve fractions were used for the collection of benthic foraminifera (Edwards et al ., 2004; Hayward et al ., 2011; Schönfeld et al ., 2012; Camacho et al ., 2015; Debenay et al ., 2015).…”

Section: Methodsmentioning

confidence: 99%

“…Samples taken for foraminiferal analysis were preserved in 80% ethanol and stained with Rose Bengal (2 g l −1 ), following methods described by Schönfeld et al (2012). About 10 cm 3 of the stained samples was washed through a 500 μm sieve and then a 63 μm sieve (Buzas-Stephens et al, 2018). Only the 63 μm sieve fractions were used for the collection of benthic foraminifera (Edwards et al, 2004;Hayward et al, 2011;Schönfeld et al, 2012;Camacho et al, 2015;Debenay et al, 2015).…”

Section: Samplingmentioning

confidence: 99%

Intertidal zonation of live benthic foraminiferal assemblages from mangrove environments around south-west Penang Island, Peninsular Malaysia

et al. 2023

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Studies on benthic foraminifera were conducted in the mangrove forests of Teluk Tempoyak, Pulau Betong and Kuala Sungai Pinang, Penang Island, Peninsular Malaysia to examine species composition and distribution patterns in different intertidal zones. Twenty-eight live benthic foraminiferal species were successfully identified at the study locations, predominantly species with agglutinated tests. Assemblages in Pulau Betong and Teluk Tempoyak were dominated by similar species such as Ammonia aoteana, Elphidium hispidulum, Elphidium neosimplex and Trochammina inflata, while Kuala Sungai Pinang comprises a high number of Trochammina inflata and Arenoparrella mexicana. Three species, Aubignyna perlucida, Elphidium neosimplex and Elphidium sandiegoense, were recorded for the first time in Malaysian mangrove forests. Principal component analysis showed that sediment type and organic matter content were the dominant parameters that explained the variation of environmental gradient. Canonical correspondence analysis of these parameters with benthic foraminiferal species indicated that sand particles influenced distribution of the hyaline tests. Species with agglutinated tests were abundant in sediment with rich organic matter in combination with high silt and clay content. Species with hyaline tests dominated lower intertidal zones, while those with agglutinated tests inhabited the area from the middle to upper intertidal zones. This distribution pattern of benthic foraminiferal species mirrored patterns found at other local and global mangrove locations.

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Benthic Superheroes: Living Foraminifera from Three Bays in the Mission-Aransas National Estuarine Research Reserve, USA

Cited by 9 publications

References 32 publications

Foraminiferal Distribution in Two Estuarine Intertidal Mudflats of the French Atlantic Coast: Testing the Marine Influence Index

Foraminiferal Distribution in Two Estuarine Intertidal Mudflats of the French Atlantic Coast: Testing the Marine Influence Index

The foraminiferal record in the Holocene evolution of the Mecklenburg Bay (south-western Baltic Sea)

Intertidal zonation of live benthic foraminiferal assemblages from mangrove environments around south-west Penang Island, Peninsular Malaysia

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