Modern benthic foraminiferal assemblages from the world’s largest deltaic mangrove ecosystem, the Sundarbans

Sen, Areen; Ghosh, M.; Khanderao, Pradnya; Das, Sunit; Chowdhury, Debmalya Roy; Sarkar, Pankaj Kumar; Saha, Ratul; Bhadury, Punyasloke

doi:10.1007/s12526-015-0383-z

Cited by 9 publications

(4 citation statements)

References 20 publications

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“…The structure of the thin-shelled test of M. obliqua is known to be quickly degraded after death (Hayward et al ., 2004). Meanwhile, M. fusca is found in most intertidal areas, typically at the higher tidal elevations (Barbosa & Suguio, 1999; Horton et al ., 2003; Murray, 2006; Gómez & Bernal, 2013; Camacho et al ., 2015; Sen et al ., 2015).…”

Section: Discussionmentioning

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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Section: Discussionmentioning

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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“…Foraminiferal distributions in modern mangrove environments and on the adjacent marine shelf have been studied extensively (e.g., Todd and Brönnimann, 1957;Murray, 1991Murray, , 2006Berkeley et al, 2009a;Satyanarayana et al, 2014;Eichler et al, 2015;Fajemila et al, 2015;Jeyabal et al, 2016;Sen et al, 2016). The Åsen assemblage differs from modern mangrove-associated assemblages by: (1) a lack of organiccemented siliceous agglutinated Foraminifera, usually common constituents of modern mangrove communities; (2) having 5% Lagenida including a diversity of genera, whereas modern mangrove assemblages have very few if any Lagenida; (3) having 8% triserial Buliminida, whereas similar morphotypes are usually absent from the modern mangrove assemblages but are present in deeper-water environments; and (4) having about 5% planktonic foraminiferans, whereas these are absent or extremely rare in modern mangrove environments.…”

Section: Environment Suggested By Foraminiferamentioning

confidence: 99%

Did mangrove communities exist in the Late Cretaceous of the Kristianstad Basin, Sweden?

McLoughlin

Haig

Siversson

et al. 2018

Palaeogeography, Palaeoclimatology, Palaeoecology

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Previous inferences of oyster-dominated communities occupying mangrove-like depositional settings in the Kristianstad Basin, Sweden, during the late early Campanian are reassessed. A significant percentage of oysters (Acutostrea incurva) from the Belemnellocamax mammillatus zone in Bed 3 at Åsen bear indentations on their left valves indicating attachment to plant axes. Many of these axes bear morphological features characteristic of the distal subaerial portions of woody plant branches and appear to have been rafted into the marine environment rather than representing in situ mangrove stems and roots. Foraminiferal assemblages recovered from sediment within the oyster body cavities differ from modern mangrove-community associations by the absence of siliceous agglutinated Foraminifera, the presence of diverse and relatively abundant Lagenida, relatively common triserial Buliminida, and a notable percentage of planktonic taxa. Chondrichthyan teeth assemblages from the same beds are similarly incompatible with the interpretation of a mangrove depositional environment based on comparisons with the distribution of related extant taxa. Apart from oyster shells and belemnite rostra, these beds are notably depauperate in diversity and abundance of macroinvertebrate remains compared with coeval carbonate shoal and rocky shoreline assemblages from the same basin. The collective palaeontological and sedimentological evidence favours an inner neritic sandy-substrate setting, but not nearshore or mangrove-like depositional environment for the oyster-rich Bed 3 at Åsen. The absence of mangrove-like assemblages at Åsen is consistent with the development of modern mangrove ecosystems much later (during the Maastrichtian and Cenozoic) based on the global palynological record.

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“…As yet, monitoring of the status of estuarine meiobenthic components and their key ecosystem functions from Sundarbans Estuarine System (SES) still remains discrete and limited to selected sites, which are not sufficient to exhaustively ensuring ecological goals of sustainability. Meager amount of studies are available on meiofauna inhabiting the western (Rao and Misra, 1983;Dey et al, 2012; and eastern parts (Sen et al, 2016) of Indian Sundarbans, howbeit there is a dearth of information about their composition along the central sector of SES. At the central tract of SES, River Matla divides Indian Sundarbans into Reserved Forest on the west and Sundarban Tiger Reserve on the east and large portions of it are quite inaccessible to human intervention.…”

Section: Introductionmentioning

confidence: 99%

Disentangling the Effect of Seasonal Dynamics on Meiobenthic Community Structure From River Matla of Sundarbans Estuarine System, India

Ghosh

Mandal

2021

Front. Mar. Sci.

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In estuarine sediment, meiobenthos serve as an excellent candidate to perform a range of ecosystem services. However, even though the taxonomic sufficiency of meiobenthos in detecting spatiotemporal gradients is well recognized, very little is known about their functional attributes in response to environmental descriptors. To bridge this knowledge gap, the taxonomic structure and trait-based functional diversity patterns of meiobenthic assemblage, focusing on nematode species composition, were assessed for the first time from the unexplored central sector of Sundarbans Estuarine System (SES). Sediment samples were collected seasonally (monsoon, winter, spring, and summer) selecting a total of eight stations across River Matla (the widest and longest river of SES). Distinct seasonal successional patterns had been observed in meiobenthic abundance modulated by seasonal alteration in the sedimentary environment (PERMANOVA, p < 0.05). Our study revealed a strong preponderance of meiobenthic density in spring (2978 ± 689.98 ind. 10 cm–2) and lowest during monsoon (405 ± 51.22 ind. 10 cm–2). A total of 11 meiobenthic taxa were identified with the dominance of nematodes. Altogether, 79 species of nematode belonging to 22 families had been identified across the entire study area and nematode assemblage was dominated by Sabatieria praedatrix, Sphaerolaimus balticus, Desmodora communis, Dorylaimopsis punctata, and Daptonema hirsutum. Principal component analysis depicted a distinct separation of seasons with reference to environmental variables. Distance-based redundancy analysis delineated that meiobenthic communities were mainly structured by organic matter, salinity, and dissolved oxygen concentration. Biological trait analyses of nematode assemblages were applied to gather the ecological information based on morphological and ecological characteristics. The most common morphotypes were slender body shape, clavate tail shape, striated cuticle pattern, and non-selective deposit feeders with colonizing abilities of 2–3 (c–p score in a scale from 1 to 5). Results from BIO-ENV showed that sediment organic matter and dissolved oxygen played overriding roles in shaping the functional compositions of nematodes. Thus, the characterization of meiobenthos and nematode assemblages in the context of taxonomic as well as functional attributes represents a first step toward building of baseline data which could help to evaluate the ecological status of SES and direct future research priorities concurrently.

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Modern benthic foraminiferal assemblages from the world’s largest deltaic mangrove ecosystem, the Sundarbans

Cited by 9 publications

References 20 publications

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

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

Did mangrove communities exist in the Late Cretaceous of the Kristianstad Basin, Sweden?

Disentangling the Effect of Seasonal Dynamics on Meiobenthic Community Structure From River Matla of Sundarbans Estuarine System, India

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