Distribution Trends of Foraminiferal Assemblages in Paralic Environments

Debenay, Jean-Pierre; Guillou, Jean-Jacques; Redois, Fabrice; Geslin, Emmanuelle

doi:10.1007/978-1-4615-4167-7_3

Cited by 109 publications

(92 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…but is very constant and is even dominant in a few samples of the lower marsh-mud zone. However, our data do not reveal the zonation pattern observed by Redois and Debenay (1996), Debenay et al (2000) and Debenay and Guilou (2002). Instead, it seems that Ammonia spp.…”

Section: Middle Estuarycontrasting

confidence: 96%

“…1500 samples collected worldwide by several authors in various types of transitional environments and synthesized the main foraminiferal distribution trends for each geographical and climatic zone. Despite several similarities between the general distribution model they proposed for temperate North Atlantic transitional environments and those studied by Horton and Murray (2007) , the benthic foraminifera distribution trends found in Guadiana Estuary present greater similarities with the distribution trends observed in Mediterranean transitional environments (Scott et al, 1979;Petrucci et al, 1983;Serandrei-Barbero et al, 1999;Debenay et al, 2000). In Mediterranean transitional environments, J. macrescens and T. inflata are prominent species in the upper marsh zone, occasionally associated with D. aguayoi.…”

Section: Middle Estuarymentioning

confidence: 81%

“…Both species are resistant to strong physico-chemical changes such as anoxia crises (common in the Mediterranean Sea and stratified lagoons), which require rapid recolonization (Debenay et al, 1998c;Frontalini and Coccioni, 2011). In the temperate paralic environments of the Atlantic coast of France, H. germanica is the most euryhaline and opportunistic hyaline species, marking the transition between agglutinated forms from upper paralic environments (where it is dominant) to calcareous forms from environments of higher marine influence, being progressively replaced by A. tepida (Redois and Debenay, 1996;Debenay et al, 2000;Debenay and Guilou, 2002). Horton and Murray (2007) found H. germanica among the dominant calcareous species from the tidal flats to middle marsh environments, and Ammonia spp.…”

Section: Middle Estuarymentioning

confidence: 99%

See 2 more Smart Citations

Taxonomy, ecology and biogeographical trends of dominant benthic foraminifera species from an Atlantic-Mediterranean estuary (the Guadiana, southeast Portugal)

Camacho

Moura

Connor

et al. 2015

Palaeontologia Electronica

View full text Add to dashboard Cite

Section: Middle Estuarycontrasting

confidence: 96%

Section: Middle Estuarymentioning

confidence: 81%

Section: Middle Estuarymentioning

confidence: 99%

See 1 more Smart Citation

Taxonomy, ecology and biogeographical trends of dominant benthic foraminifera species from an Atlantic-Mediterranean estuary (the Guadiana, southeast Portugal)

Camacho

Moura

Connor

et al. 2015

Palaeontologia Electronica

View full text Add to dashboard Cite

“…1; Coccioni, 2000). Ammonia tepida is a widespread species dominant in lagoons, estuaries, and deltaic environments (Jorissen, 1988;Murray, 2006), commonly recorded in central lagoonal assemblages of the Mediterranean associated with H. germanica (Debenay et al, 2000). The latter taxon prefers to feed on labile organic matter, such as diatoms, in contrast to A. tepida, which is able to consume many food sources, including refractory material (Goldstein and Corliss, 1994;de Nooijer et al, 2007).…”

Section: Benthic Foraminiferal Assemblagesmentioning

confidence: 99%

Benthic foraminifera or Ostracoda? Comparing the accuracy of palaeoenvironmental indicators from a Pleistocene lagoon of the Romagna coastal plain (Italy)

Barbieri

Vaiani

2018

J. Micropalaeontol.

View full text Add to dashboard Cite

Abstract. Integrated analyses of multiple groups of microfossils are frequently performed to unravel the palaeoenvironmental evolution of subsurface coastal successions, where the complex interaction among several palaeoecological factors can be detected with benthic assemblages. This work investigates the palaeoenvironmental resolution potential provided by benthic foraminifera and ostracoda within a Pleistocene lagoonal succession of the Romagna coastal plain (northern Italy). Quantitative approaches and statistical techniques have been applied to both groups in order to understand the main factors that controlled the composition of assemblages and compare the palaeoecological record provided by single fossil groups.The two faunal groups are characterized by the high dominance of opportunistic species (Ammonia tepidaAmmonia parkinsoniana and Cyprideis torosa); however, detailed palaeoecological information is inferred from less common taxa. Benthic foraminiferal assemblages are mainly determined by the frequencies of abnormal individuals and species related to high concentrations of organic matter, showing two assemblages: a stressed assemblage, consistent with a brackish-water environment subject to salinity and oxygen fluctuations, and an unstressed assemblage, which indicates more stable conditions. Despite the lower number of species, ostracoda show more significant differences in terms of species composition and ecological structure between their three assemblages, formed in response to a salinity gradient and indicative of inner, central, and outer lagoon conditions. The stratigraphic distribution of ostracod assemblages shows a general transgressive-regressive trend with minor fluctuations, whereas benthic foraminifera highlight the presence of a significant palaeoenvironmental stress.In this case, the higher abundance along the stratigraphic succession, the higher differentiation of the assemblages, and the well-defined relationship between taxa and ecological parameters determine Ostracoda as the most reliable fossil group for precise palaeoenvironmental reconstructions. Nevertheless, benthic foraminifera indicate palaeoenvironmental stress and can be used to refine the environmental interpretation in the presence of monospecific ostracod assemblages.

show abstract

“…In photic shallow-water habitats (e.g., estuaries, bays, lagoons and other intertidal or shallow-water subtidal areas), kleptoplastic benthic foraminiferal species, such as Haynesina germanica, Elphidium williamsoni, the "excavatum" species complex (e.g., E. oceanense, E. selseyense, see Darling et al (2016)), or Ammonia spp., are often the dominant mudflat foraminiferal taxa (Debenay et al, 2000;Debenay et al, 2006;Morvan et al, 2006;Bouchet et al, 2009;Pascal et al, 2009;Thibault de Chanvalon et al, 2015;Cesbron et al, 2016). Their vertical distribution is characterized by a clear maximum density in the upper oxygenated millimeters of the sediment (Alve and Murray, 2001;Bouchet et al, 2009;Thibault de Chanvalon et al, 2015;Cesbron et al, 2016), where light can also penetrate (Kuhl et al, 1994;Cartaxana et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Ultrastructure and distribution of kleptoplasts in benthic foraminifera from shallow-water (photic) habitats

Jauffrais

Lekieffre

Koho

et al. 2018

Marine Micropaleontology

Self Cite

View full text Add to dashboard Cite

Assimilation, sequestration and maintenance of foreign chloroplasts inside an organism is termed "chloroplast sequestration" or "kleptoplasty". This phenomenon is known in certain benthic foraminifera, in which such kleptoplasts can be found both intact and functional, but with different retention times depending on foraminiferal species. In the present study, seven species of benthic foraminifera (Haynesina germanica, Elphidium williamsoni, E. selseyense, E. oceanense, E. aff. E. crispum, Planoglabratella opercularis and Ammonia sp.) were collected from shallow-water benthic habitats and examined with transmission electron microscope (TEM) for cellular ultrastructure to ascertain attributes of kleptoplasts. Results indicate that all these foraminiferal taxa actively obtain kleptoplasts but organized them differently within their endoplasm. In some species, the kleptoplasts were evenly distributed throughout the endoplasm (e.g., H. germanica, E. oceanense, Ammonia sp.), whereas other species consistently had plastids distributed close to the external cell membrane (e.g., Elphidium williamsoni, E. selseyense, P. opercularis).Chloroplast degradation also seemed to differ between species, as many degraded plastids were found in Ammonia sp. and E. oceanense compared to other investigated species. Digestion ability, along with different feeding and sequestration strategies may explain the differences in retention time between taxa. Additionally, the organization of the sequestered plastids within the endoplasm may also suggest behavioral strategies to expose and/or protect the sequestered plastids to/from light and/or to favor gas and/or nutrient exchange with their surrounding habitats.

show abstract

Distribution Trends of Foraminiferal Assemblages in Paralic Environments

Cited by 109 publications

References 32 publications

Taxonomy, ecology and biogeographical trends of dominant benthic foraminifera species from an Atlantic-Mediterranean estuary (the Guadiana, southeast Portugal)

Taxonomy, ecology and biogeographical trends of dominant benthic foraminifera species from an Atlantic-Mediterranean estuary (the Guadiana, southeast Portugal)

Benthic foraminifera or Ostracoda? Comparing the accuracy of palaeoenvironmental indicators from a Pleistocene lagoon of the Romagna coastal plain (Italy)

Ultrastructure and distribution of kleptoplasts in benthic foraminifera from shallow-water (photic) habitats

Contact Info

Product

Resources

About