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Journal articles on the topic 'Foraminifera'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

M. Natsir, Suhartati, and Ira Dillenia. "The Benthic Foraminiferal Assemblages in the Seagrass Bed of Tanjung Berakit Waters, Bintan Island." HAYATI Journal of Biosciences 30, no. 6 (2023): 1149–54. http://dx.doi.org/10.4308/hjb.30.6.1149-1154.

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Seagrass is the most common ecosystem in Tanjung Berakit waters. Therefore, Tanjung Berakit waters have a very important role as a benthic foraminiferal habitat. This study was conducted to describe the distribution of benthic foraminifera relating to the environmental condition of the waters. The samples were collected from eight stations by handling garb in November 2017. This study collected 18 species of shallow water benthic foraminifera dominated by Amphistegina and Heterostegina. This study recorded a correlation between the sediment texture and foraminiferal assemblages. The most commo

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2

Roy, T., F. Lombard, L. Bopp, and M. Gehlen. "Projected impacts of climate change and ocean acidification on the global biogeography of planktonic Foraminifera." Biogeosciences 12, no. 10 (2015): 2873–89. http://dx.doi.org/10.5194/bg-12-2873-2015.

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Abstract. Planktonic Foraminifera are a major contributor to the deep carbonate flux and their microfossil deposits form one of the richest databases for reconstructing paleoenvironments, particularly through changes in their taxonomic and shell composition. Using an empirically based planktonic foraminifer model that incorporates three known major physiological drivers of their biogeography – temperature, food and light – we investigate (i) the global redistribution of planktonic Foraminifera under anthropogenic climate change and (ii) the alteration of the carbonate chemistry of foraminifera

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3

Glock, Nicolaas, Alexandra-Sophie Roy, Dennis Romero, et al. "Metabolic preference of nitrate over oxygen as an electron acceptor in foraminifera from the Peruvian oxygen minimum zone." Proceedings of the National Academy of Sciences 116, no. 8 (2019): 2860–65. http://dx.doi.org/10.1073/pnas.1813887116.

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Benthic foraminifera populate a diverse range of marine habitats. Their ability to use alternative electron acceptors—nitrate (NO3−) or oxygen (O2)—makes them important mediators of benthic nitrogen cycling. Nevertheless, the metabolic scaling of the two alternative respiration pathways and the environmental determinants of foraminiferal denitrification rates are yet unknown. We measured denitrification and O2respiration rates for 10 benthic foraminifer species sampled in the Peruvian oxygen minimum zone (OMZ). Denitrification and O2respiration rates significantly scale sublinearly with the ce

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4

Martinez, Ana, Laura Hernández-Terrones, Mario Rebolledo-Vieyra, and Adina Paytan. "Impact of carbonate saturation on large Caribbean benthic foraminifera assemblages." Biogeosciences 15, no. 22 (2018): 6819–32. http://dx.doi.org/10.5194/bg-15-6819-2018.

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Abstract. Increasing atmospheric carbon dioxide and its dissolution in seawater have reduced ocean pH and carbonate ion concentrations, with potential implications on calcifying organisms. To assess the response of large Caribbean benthic foraminifera to low carbonate saturation conditions, we analyzed benthic foraminifers' abundance and relative distribution in surface sediments in proximity to low-carbonate-saturation submarine springs and at adjacent control sites. Our results show that the total abundance of large benthic foraminifera was significantly lower at the low-pH submarine springs

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5

Keul, N., G. Langer, L. J. de Nooijer, and J. Bijma. "Effect of ocean acidification on the benthic foraminifera <i>Ammonia</i> sp. is caused by a decrease in carbonate ion concentration." Biogeosciences 10, no. 10 (2013): 6185–98. http://dx.doi.org/10.5194/bg-10-6185-2013.

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Abstract. About 30% of the anthropogenically released CO2 is taken up by the oceans; such uptake causes surface ocean pH to decrease and is commonly referred to as ocean acidification (OA). Foraminifera are one of the most abundant groups of marine calcifiers, estimated to precipitate ca. 50 % of biogenic calcium carbonate in the open oceans. We have compiled the state of the art literature on OA effects on foraminifera, because the majority of OA research on this group was published within the last three years. Disparate responses of this important group of marine calcifiers to OA were report

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6

Isakova, Tatiana Nikolaevna, Tatiana Valerievna Filimonova та Elena Ivanovna Kulagina. "ОСОБЕННОСТИ ТАКСОНОМИЧЕСКОГО РАЗНООБРАЗИЯ РАННЕПЕРМСКИХ ФОРАМИНИФЕР БАШКИРСКИХ ШИХАНОВ ГЕОПАРКА ТОРАТАУ (ON THE TAXONOMICAL DIVERSITY OF THE EARLY PERMAN FORAMINIFERA OF THE BASHKIR SHIKHANS IN THE TORATAU GEOPARK)". Geologicheskii vestnik, № 2 (14 липня 2023): 94–115. http://dx.doi.org/10.31084/2619-0087/2023-2-7.

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Изучены ассоциации фораминифер из нижнепермских отложений рифовых массивов Торатау, Куштау и Юрактау. Определен их таксономический состав с учетом данных, ранее опубликованных предшествующими исследователями. Уникальной особенностью сообществ фораминифер (фузулинид и мелких фораминифер) Башкирских шиханов является неповторимый смешанный состав комплексов. В сообществах фораминифер присутствуют таксоны как широко латерально распространенные, так и эндемики; как виды северных акваторий, так и виды области Палеотетис. Таксономический состав фораминифер включает свыше 50 родов и более 180 видов. П

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7

Pearson, Paul N. "Oxygen Isotopes in Foraminifera: Overview and Historical Review." Paleontological Society Papers 18 (November 2012): 1–38. http://dx.doi.org/10.1017/s1089332600002539.

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Foraminiferal tests are a common component of many marine sediments. The oxygen isotope ratio (δ18O) of test calcite is frequently used to reconstruct aspects of their life environment. The δ18O depends mainly on the isotope ratio of the water it is precipitated from, the temperature of calcification, and, to a lesser extent, the carbonate ion concentration. Foraminifera and other organisms can potentially preserve their original isotope ratio for many millions of years, although diagenetic processes can alter the ratios. Work on oxygen isotope ratios of foraminifera was instrumental in the di

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8

Bindiu-Haitonic, Raluca, Ramona Balc, Szabolcs-Attila Kovecsi, Zoltan Csiki-Sava, and Sorin Filipescu. "Early Paleocene foraminifera and calcareous nannoplankton assemblages in deep-sea environments of the northern Eastern Carpathians (Romania)." Micropaleontology 71, no. 2 (2025): 141–66. https://doi.org/10.47894/mpal.71.2.02.

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Deep-water benthic foraminifera and calcareous nannoplankton assemblages are reported from lower Paleocene bathyal turbiditic deposits cropping out along three local transects from the northern Eastern Carpathians (Romania). Paleoenvironmental investigations concerning these deposits have been carried out using both foraminifera (abundances, agglutinated foraminifera morphogroups, clusters, diversity) and calcareous nannoplankton (abundances, clusters, and principal component analysis). The agglutinated foraminifera morphogroups show high proportions of tubular, elongate subcylindrical, and fl

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9

Natsir, Suhartati M. "THE DISTRIBUTION OF BENTHIC FORAMINIFERA IN DAMAR ISLAND AND JUKUNG ISLAND, SERIBU ISLANDS." Marine Research in Indonesia 35, no. 2 (2010): 9. http://dx.doi.org/10.14203/mri.v35i1.10.

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Seribu Islands are archipelago within Jakarta Bay built upon the pleistocene coral formation of the Sunda Shelf. The islands are characterized by unique and high biodiversity such as coral reefs. Since coral reef degradation would lead to a decrease of human prosperity, the determination of the coral reef quality is of high importance. Foraminifera offers an early warning system for the coral reef condition, as exemplified by the FORAM Index, i.e. Foraminifera in Reef Assessment and Monitoring Index. This study compared the foraminiferal community structure and the FORAM Index of two islands b

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10

Natsir, Suhartati M. "THE DISTRIBUTION OF BENTHIC FORAMINIFERA IN DAMAR ISLAND AND JUKUNG ISLAND, SERIBU ISLANDS." Marine Research in Indonesia 35, no. 2 (2010): 9–14. http://dx.doi.org/10.14203/mri.v35i2.10.

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Seribu Islands are archipelago within Jakarta Bay built upon the pleistocene coral formation of the Sunda Shelf. The islands are characterized by unique and high biodiversity such as coral reefs. Since coral reef degradation would lead to a decrease of human prosperity, the determination of the coral reef quality is of high importance. Foraminifera offers an early warning system for the coral reef condition, as exemplified by the FORAM Index, i.e. Foraminifera in Reef Assessment and Monitoring Index. This study compared the foraminiferal community structure and the FORAM Index of two islands b

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11

Senowbari-Daryan, Baba, and Michael Link. "Foraminifera from the Norian–Rhaetian reef carbonates of the Taurus Mountains (Saklıkent, Turkey)." Geologica Carpathica 68, no. 4 (2017): 303–17. http://dx.doi.org/10.1515/geoca-2017-0021.

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AbstractNorian–Rhaetian reef carbonates are exposed in several localities in Taurus Mountains. They predominately contain hypercalcified sponges, followed by scleractinian corals and other less numerous organisms. A coherent Norian–Rhaetian reef structure is exposed near the small town of Saklıkent, west of Antalya. Foraminifers occur in reef carbonates of Saklıkent by numerous genera as shown in this paper. Two species —Siculocosta tauricaandSiculocosta sadati— are described as new. The foraminiferal association of Saklıkent is similar or almost identical to the associations known from the No

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12

Keul, N., G. Langer, L. J. de Nooijer, and J. Bijma. "Effect of ocean acidification on the benthic foraminifera <i>Ammonia</i> sp. is caused by a decrease in carbonate ion concentration." Biogeosciences Discussions 10, no. 1 (2013): 1147–76. http://dx.doi.org/10.5194/bgd-10-1147-2013.

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Abstract. About 30% of the anthropogenically released CO2 is taken up by the oceans, which causes surface ocean pH to decrease and is commonly referred to as Ocean Acidification (OA). Foraminifera are one of the most abundant groups of marine calcifiers, estimated to precipitate ca. 50% of biogenic calcium carbonate in the open oceans. We have compiled the state of the art of OA effects on foraminifera, because the majority of OA research on this group was published within the last 3 yr. Disparate responses of this important group of marine calcifiers to OA were reported, highlighting the impo

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13

Jaiprakash, B. C., and P. Kumar. "Late Eocene-Early Oligocene Biostratigraphy of Mansa-Indrora Area, Cambay Basin." Journal Geological Society of India 42, no. 4 (1993): 357–67. http://dx.doi.org/10.17491/jgsi/1993/420407.

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Abstract Late Eocene-Early Oligocene succession from two well sections of north-eastern margin of Cambay Basin was analysed for their foraminifera1 content. It has yielded rich larger foraminifera a few planktonic and benthonic foraminifera. Three larger foraminiferal biozones have been recognised for the succession in geologically ascending order. These are Nummulites fabianii Partial Range Zone (? 39.4 m.y. to 37.4 m,y., i.e., ? P 15 to 16); Discocyclina dispansa - Nummulites fabianii Concurrent Range Zone (37.4 m.y. to 36 m.y.. i.e., Zone P 17) and Nummulites fichteli Partial Range Zone (36

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14

Roy, T., F. Lombard, L. Bopp, and M. Gehlen. "Projected impacts of climate change and ocean acidification on the global biogeography of planktonic foraminifera." Biogeosciences Discussions 11, no. 6 (2014): 10083–121. http://dx.doi.org/10.5194/bgd-11-10083-2014.

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Abstract. Planktonic foraminifera are a major contributor to the deep carbonate-flux and the planktonic biomass of the global ocean. Their microfossil deposits form one of the richest databases for reconstructing paleoenvironments, particularly through changes in their taxonomic and shell composition. Using an empirically-based foraminifer model that incorporates three known major physiological drivers of foraminifer biogeography – temperature, food and light – we investigate (i) the global redistribution of planktonic foraminifera under anthropogenic climate change, and (ii) the alteration of

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15

Macher, Jan-Niklas, Dimitra Maria Bloska, Maria Holzmann, Elsa B. Girard, Jan Pawlowski, and Willem Renema. "Mitochondrial cytochrome c oxidase subunit I (COI) metabarcoding of Foraminifera communities using taxon-specific primers." PeerJ 10 (September 5, 2022): e13952. http://dx.doi.org/10.7717/peerj.13952.

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Foraminifera are a species-rich phylum of rhizarian protists that are highly abundant in most marine environments. Molecular methods such as metabarcoding have revealed a high, yet undescribed diversity of Foraminifera. However, so far only one molecular marker, the 18S ribosomal RNA, was available for metabarcoding studies on Foraminifera. Primers that allow amplification of foraminiferal mitochondrial cytochrome oxidase I (COI) and identification of Foraminifera species were recently published. Here we test the performance of these primers for the amplification of whole foraminiferal communi

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16

Ying, Rui, Fanny M. Monteiro, Jamie D. Wilson, and Daniela N. Schmidt. "ForamEcoGEnIE 2.0: incorporating symbiosis and spine traits into a trait-based global planktic foraminiferal model." Geoscientific Model Development 16, no. 3 (2023): 813–32. http://dx.doi.org/10.5194/gmd-16-813-2023.

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Abstract. Planktic foraminifera are major marine calcifiers in the modern ocean, regulating the marine inorganic carbon pump, and generating marine fossil archives of past climate change. The foraminifera contain ecogroups with and without spines and algal symbionts, creating functional trait diversity which expands their ecological niches. Here, we incorporate symbiosis and spine traits into the symbiont-barren non-spinose foraminifer functional type in EcoGEnIE to represent all the extant foraminifera species. We calibrated the modelled new traits using Latin hypercube sampling (LHS) and ide

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17

Hosseini, Raviz Seyed Mohammad Reza, Massih Afghah, Mahnaz Parvaneh Nejad Shirazi, and of Geology Payame Noor University Tehran Iran. E.-mail: mahnaz402002@yahoo.com Department. "Biostratigraphy of Late Eocene-Oligocene Deposits based on Planktonic and Larger Benthic Foraminifera in the Sabzevaran and Sad Sections, NW Jiroft (Iran)." Revue de Paléobiologie 39, no. 1 (2020): 183–97. https://doi.org/10.5281/zenodo.3936165.

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In this paper, to study biostratigraphy of Paleogene deposits based on foraminifera fauna in NW of Jiroft located in the Central Iran zone, two stratigraphic sections, namely Sabzevaran (354 m) and Sad (132 m) sections were selected. Planktonic foraminifera and large benthic foraminifera were identified in both sections. Faunal assemblages and vertical distribution of identified species support presence of 5 planktonic foraminiferal and 2 large benthic foraminiferal biozones in the Sabzevaran section showing Middle Eocene to Chattian age. In addition, presence of planktonic foraminif

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18

Glock, Nicolaas. "Benthic foraminifera and gromiids from oxygen-depleted environments – survival strategies, biogeochemistry and trophic interactions." Biogeosciences 20, no. 16 (2023): 3423–47. http://dx.doi.org/10.5194/bg-20-3423-2023.

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Abstract. The oceans are losing oxygen (O2), and oxygen minimum zones are expanding due to climate warming (lower O2 solubility) and eutrophication related to agriculture. This trend is challenging for most marine taxa that are not well adapted to O2 depletion. For other taxa this trend might be advantageous because they can withstand low O2 concentrations or thrive under O2-depleted or even anoxic conditions. Benthic foraminifera are a group of protists that include taxa with adaptations to partly extreme environmental conditions. Several species possess adaptations to O2 depletion that are r

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19

N S, Igbinigie, and Aigbadon G O. "Stratigraphic Insights And Depositional Systems Of Osm Well, Megbe Field, Niger Delta Basin." Global Journal of Geological Sciences 22, no. 1 (2024): 57–65. http://dx.doi.org/10.4314/gjgs.v22i1.5.

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Foraminiferal biostratigraphy and paleoenvironmental analysis of the sediments penetrated by OSM well in the Coastal Swamp Delta Depobelt, Niger Delta Basin was carried out in order to determine foraminiferal biozonation, relative age, paleobathymetry and depositional environment of the area of interest. A total of twenty-eight (28) foraminifera species were recovered; three (03) foraminifera species were planktonic, while eight (8) and seventeen (17) foraminifera species were calcareous and agglutinated benthic foraminifera respectively. Four planktonic foraminifera biozones of Blow (1979) we

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20

Meric, Engin, Niyazi Avsar, Mehmet Baki Yokes, and Feyza Dincer. "Atlas of Recent Benthic foraminifera from Turkey." Micropaleontology 60, no. 3-4 (2014): 211–398. http://dx.doi.org/10.47894/mpal.60.3.01.

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Benthic foraminifera are single-celled organisms abundantly found in all kind of marine environments from brackish estuaries to the deep ocean basins at all latitudes. Foraminifera are covered with an organic test which accumulate in the sediment and make up a significant amount of sedimentary rock. Many species have well defined salinity and temperature preferences making them particularly useful for reconstructing ecological changes occured in the past. The fossil tests not only used for paleoenvironmental interpretition, but also for biostratigraphy and age-dating. Anthropogenic pollution o

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21

Yadrenkin, A. V., A. S. Byakov, R. V. Kutygin, and A. V. Kopylova. "NEW DATES AND STRATIGRAPHICAL DISTRIBUTION OF FORAMINIFERS FROM PERMIAN-TRIASSIC BOUNDARY DEPOSITS IN THE SOUTH VERKHOYAN REGION." Tikhookeanskaya Geologiya 39, no. 5 (2020): 69–82. http://dx.doi.org/10.30911/0207-4028-2020-39-5-69-82.

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The first results made on the study of foraminifera from Permian-Triassic boundary deposits in the South Verkhoyan Region (the lower part of the Nekuchan Formation, the Suol section, the Setorym River basin, tributary of the Vostochnaya Khandyga River) are presented. The foraminifera are a new group for this section and were not used in paleontological stratigraphic studies before. The foraminiferal assemblage is represented exclusively by ammodiscids (genera Ammodiscus, Glomospira, and Glomospirella), among which Ammodiscus septentrionalis Gerke dominates. The distribution of foraminifera in

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22

Jatiningrum, Resti Samyati, Gina Mulhimatul Aliyah, Anggun Mutika, and Yunia Witasari. "Foraminifera Abundance in the Southern Waters of Sumbawa, Senunu Canyon, West Sumbawa, Sumbawa, West Nusa Tenggara." Journal of Tropical Biodiversity and Biotechnology 10, no. 2 (2025): jtbb15938. https://doi.org/10.22146/jtbb.15938.

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The Southern Waters of Sumbawa, Senunu Canyon, West Nusa Tenggara, is influenced by the Indonesian Throughflow (ITF), crucial for regional marine dynamics. This area also faces impacts from mining tailings discharged into the seabed, raising concerns about their effects on meiobenthic fauna, including foraminifera. This study examined changes in foraminiferal assemblages, abundance, and diversity using 20 gravity core samples from sites NM.021 and NM.023. The results revealed a diverse and abundant presence of foraminifera, with planktonic foraminifera dominating in terms of abundance compared

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23

Langer, Martin R., and Harmeet Bagi. "Tubicolous polychaetes as substrates for epizoic foraminifera." Journal of Micropalaeontology 13, no. 2 (1994): 132. http://dx.doi.org/10.1144/jm.13.2.132.

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Abstract. Associations of epizoic foraminifera and invertebrates are widespread and have been reported from polar to tropical and shallow to bathyal environments (Zumwalt &amp; DeLaca, 1980). Their fossil record stretches far back into Palaeozoic times as documented by agglutinated foraminifera attached to crinoids in Silurian and Devonian reef deposits of Morocco and Gotland (Franzen, 1974). Strong preferences for filter-feeding hosts suggest that epizoic foraminifera benefit from increased nutritional resources accumulated in the immediate flow microhabitat (Langer &amp; Long, 1994).

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Hayward, Bruce W., François Le Coze, Leen Vandepitte, and Bart Vanhoorne. "Foraminifera in the World Register of Marine Species (Worms) Taxonomic Database." Journal of Foraminiferal Research 50, no. 3 (2020): 291–300. http://dx.doi.org/10.2113/gsjfr.50.3.291.

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ABSTRACT Most foraminiferal research is founded on sound taxonomy. To clearly communicate such research, similar species concepts and consistent use of names is desirable. As a contribution to this larger goal, the World Foraminifera Database (http://www.marinespecies.org/foraminifera) was set up in 2010 as a subset within the World Register of Marine Species (WoRMS). The purpose is to provide an authoritative, open-access inventory of all foraminiferal taxonomic names. The inventory is almost complete for both fossil and Recent foraminiferal taxa, containing 4932 generic and 55,884 species (i

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Kostecki, Robert, and Teresa Radziejewska. "The foraminiferal record in the Holocene evolution of the Mecklenburg Bay (south-western Baltic Sea)." Oceanological and Hydrobiological Studies 50, no. 2 (2021): 169–83. http://dx.doi.org/10.2478/oandhs-2021-0016.

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Abstract 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 specie

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Reolid, Matías, Jesús Reolid, Dorothea Bunzel, Michael A. Kaminski, and Christian Betzler. "Recent Arborescent Dendrophryid Foraminifera Found On Upper Pleistocene Cold-water Corals from the Inner Sea of the Maldives." Journal of Foraminiferal Research 48, no. 1 (2018): 53–61. http://dx.doi.org/10.2113/gsjfr.48.1.53.

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Abstract Recent specimens of Spiculidendron were found on Late Pleistocene (21,400–22,500 BP) cold-water corals from the sea floor at 457 m depth of the inter-atoll Kardiva Channel of the eastern row of the Maldives archipelago. Spiculidendron and other dendrophryid foraminifera (Rhizammina-like forms) exclusively colonized specimens of the genus Enallopsammia, which was characterized by a phosphatic-stain surface. The Spiculidendron wall was composed of sponge spicules, elongated diatom frustules, tests of juvenile benthic and planktic foraminifera, and calcareous nannoplankton, among other m

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Pacho, Laura, Lennart de Nooijer, and Gert-Jan Reichart. "Element ∕ Ca ratios in Nodosariida (Foraminifera) and their potential application for paleoenvironmental reconstructions." Biogeosciences 20, no. 19 (2023): 4043–56. http://dx.doi.org/10.5194/bg-20-4043-2023.

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Abstract. The chemical composition of foraminiferal shells is a well-known tool in paleoceanography to reconstruct past environments and climate. Their application is based on the relation between environmental variables and the concentration of elements incorporated or stable isotope fractionation during calcification. The vast majority of these so-called proxy relationships are based on the foraminiferal order of the Rotaliida, which, for example, encompasses all living planktonic species. However, there are more orders of foraminifera with calcifying members, some of which have fundamentall

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Bindiu-Haitonic, Raluca, Sorin Filipescu, Carlo Aroldi, Gelu Oltean, and Carmen Mariana Chira. "Eocene Deep-Water Agglutinated Foraminifera from the Eastern Carpathians (Romania): Paleoenvironments and Biostratigraphical Remarks." Micropaleontology 65, no. 1 (2019): 47–61. http://dx.doi.org/10.47894/mpal.65.1.03.

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Eocene foraminiferal assemblages from the Moldova Valley area in the Eastern Carpathians have been investigated with a focus on biostratigraphy and paleoenvironmental changes under the influence of Eocene tectonics. Paleoenvironmental investigations have been carried on two sections using foraminiferal morphogroups, clusters, and diversity analyses. The Eocene assemblages are highly diversified and dominated by deep-water agglutinated foraminifera; rare calcareous benthic and planktonic foraminifera were indentified only in one section. Agglutinated foraminiferal morphogroups are differently r

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Bornemann, André, Sofie Jehle, Friederike Lägel, Arne Deprez, Maria Rose Petrizzo, and Robert P. Speijer. "Planktic foraminiferal response to an early Paleocene transient warming event and biostratigraphic implications." International Journal of Earth Sciences 110, no. 2 (2021): 583–94. http://dx.doi.org/10.1007/s00531-020-01972-z.

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AbstractThe Latest Danian Event (LDE, ~ 62.2 Ma) is characterized by global changes in the carbon cycle as indicated by two negative δ13C excursions of up to ~ 1‰. These δ13C shifts are accompanied by a 2–3 °C warming of both surface and deep waters based on benthic and planktic foraminiferal δ18O measurements, and the LDE has, thus, been considered as a so-called hyperthermal event. The event lasted for 200 kyr and has been identified in various ocean basins and shallow marine settings. Here, we present a compilation of data from three deep-sea cores covering the Pacific, North and South Atla

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Burki, Fabien, Sergey I. Nikolaev, Ignacio Bolivar, Jackie Guiard, and Jan Pawlowski. "Analysis of expressed sequence tags from a naked foraminiferan Reticulomyxa filosa." Genome 49, no. 8 (2006): 882–87. http://dx.doi.org/10.1139/g06-048.

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Foraminifers are a major component of modern marine ecosystems and one of the most important oceanic producers of calcium carbonate. They are a key phylogenetic group among amoeboid protists, but our knowledge of their genome is still mostly limited to a few conserved genes. Here, we report the first study of expressed genes by means of expressed sequence tag (EST) from the freshwater naked foraminiferan Reticulomyxa filosa. Cluster analysis of 1630 valid ESTs enabled the identification of 178 groups of related sequences and 871 singlets. Approximately 50% of the putative unique 1059 ESTs coul

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Walker, Jennifer S., Nicole S. Khan, Timothy A. Shaw, Donald C. Barber, Adam D. Switzer, and Benjamin P. Horton. "Spatial and Temporal Distributions of Live Salt-Marsh Foraminifera in Southern New Jersey: Implications for Sea-Level Studies." Journal of Foraminiferal Research 53, no. 1 (2023): 3–19. http://dx.doi.org/10.2113/gsjfr.53.1.3.

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ABSTRACT Geological reconstructions of relative sea-level change have been greatly enhanced by continuous high-resolution records with the use of salt-marsh foraminifera due to their relationship with tidal level in modern environments and subsequent preservation of tests in sediments. A detailed understanding of how live foraminifera assemblages compare to dead or total (live + dead) assemblages and the influence of environmental variables on foraminiferal distributions is essential for their use as a proxy to reconstruct sea level. Here, we evaluated small-scale spatial and temporal (seasona

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Salmon, K. H., P. Anand, P. F. Sexton, and M. Conte. "Upper ocean mixing controls the seasonality of planktonic foraminifer fluxes and associated strength of the carbonate pump in the oligotrophic North Atlantic." Biogeosciences 12, no. 1 (2015): 223–35. http://dx.doi.org/10.5194/bg-12-223-2015.

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Abstract. Oligotrophic regions represent up to 75% of Earth's open-ocean environments. They are thus areas of major importance in understanding the plankton community dynamics and biogeochemical fluxes. Here we present fluxes of total planktonic foraminifera and 11 planktonic foraminifer species measured at the Oceanic Flux Program (OFP) time series site in the oligotrophic Sargasso Sea, subtropical western North Atlantic Ocean. Foraminifera flux was measured at 1500 m water depth, over two ~ 2.5-year intervals: 1998–2000 and 2007–2010. We find that foraminifera flux was closely correlated wit

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Norris, Richard D. "Symbiosis as an evolutionary innovation in the radiation of Paleocene planktic foraminifera." Paleobiology 22, no. 4 (1996): 461–80. http://dx.doi.org/10.1017/s0094837300016468.

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Symbioses are often regarded as an important means for the creation of evolutionary novelty as well as a trigger for the abrupt appearance of higher taxa. The fossil record of foraminifer-algal symbiosis suggests that the appearance of this ecological association contributed to the radiation of Paleogene planktic foraminifera. Isotopic evidence shows that photosymbiosis evolved in synchrony with a major diversification of trochospiral planktic foraminifera about 3.5 m.y. after the end-Cretaceous extinction. In modern planktic foraminifera, photosymbiotic species tend to have more cosmopolitan

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Babazadeh, Seyed Ahmad. "New stratigraphic data of Upper Paleocene-Lower Eocene carbonate deposits in east Iran: lithostratigraphic, biostratigraphic and sedimentological implications." Revue de Paléobiologie 39, no. 2 (2020): 485–500. https://doi.org/10.5281/zenodo.4460704.

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Lower Paleogene shallow marine carbonate rocks are exposed nearby the Shusf city in the Nehbandan area, East Central Iran. The sedimentary succession consists of siliciclastic rocks, siliciclastic-carbonate rocks, evaporitic rocks and carbonate rocks. The stratigraphic analysis of nearby the Shusf city allows to identify four informal rock units namely Palang, Chahchocho, Zibro and Debil formations in the study area. Likewise this paper introduces a detailed study of benthic foraminifera and four local assemblage zones from Selandian to Early Ilerdian age were established for the first time. T

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Devre, Rushikesh V., Ashwit S. Shetty, Toni JosephKennady, and Hitesh U. Shingadia. "Diversity of Foraminifera from the Indian Coast." UTTAR PRADESH JOURNAL OF ZOOLOGY 45, no. 15 (2024): 144–53. http://dx.doi.org/10.56557/upjoz/2024/v45i154229.

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Foraminifera, members of the class Granuloreticulosa, are marine protozoans distributed across both pelagic and benthic zones of the ocean. After the death of these microscopic organisms, their shells are washed along the intertidal sandy shores along with sand granules. This organism's shell is called a test which is composed of calcium carbonate, silica, or agglutinated materials that characterize the genera of Foraminifera. In the present study, the sand samples were collected along the different sites of the Indian coastline viz. Juhu Beach (Mumbai), Alibaug Beach (Raigad), Palolem Beach (

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Hernitz Kučenjak, Morana, Vlasta Premec Fućek, Renata Slavković, and Ivan Mesić. "Planktonic Foraminiferal Biostratigraphy of the Late Eocene and Oligocene in the Palmyride Area, Syria." Geologia Croatica 59, no. 1 (2006): 19–39. http://dx.doi.org/10.4154/gc.2006.02.

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Three deep exploration wells in the Palmyride area (Syria) have beendrilled through Oligocene and Eocene deposits. A detailed micropalaeontological investigation has been performed on the planktonic foraminiferal assemblage from drill cuttings. Standard planktonic foraminiferal zones from P15 to P22 (E15 to O6) have been identified.The test morphology and diversity of the foraminiferal assemblageindicate a general cooling trend during the late Eocene andOligocene. The specialized Eocene forms (K-mode life strategy) suchas turborotaliids, globigerinathekids and hantkeninids become extinctin the

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Lowenstein, Tim K., and Bärbel Hönisch. "The Use of Mg/Ca as a Seawater Temperature Proxy." Paleontological Society Papers 18 (November 2012): 85–100. http://dx.doi.org/10.1017/s1089332600002564.

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The underlying basis for Mg/Ca paleothermometry is that the amount of magnesium in calcite precipitated from seawater is dependent on temperature. Here we review the state of the art of the Mg/Ca seawater paleotemperature proxy, summarized by the following: 1) Calcite, whether formed abiotically or biologically as foraminifera and ostracode shells, incorporates variable amounts of magnesium into the crystal structure. 2) Uptake of Mg varies positively with temperature. 3) The relationship between temperature and the amount of Mg in calcite has been quantified by experiments on synthetic calcit

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Ayala-López, Adriana, and Adolfo Molina-Cruz. "Micropalaeontology of the hydrothermal region in the Guaymas Basin, Mexico." Journal of Micropalaeontology 13, no. 2 (1994): 133–46. http://dx.doi.org/10.1144/jm.13.2.133.

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Abstract. A micropalaeontological analysis of 40 sedimentary samples from a hydrothermal region in the Guaymas Basin, Gulf of California, Mexico, was carried out to describe microenvironments. These microenvironments were defined through a Q-mode Factor analysis of species abundance data from the benthic foraminiferal biocoenoses and thanatocoenoses. The benthic foraminiferal results were correlated with the biogeographic patterns of diatoms, radiolarians, planktonic foraminifers and ostracods through a ‘graphic-multivariate analysis’. Although the microenvironments have a patchy distribution

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Burke, Janet E., Willem Renema, Michael J. Henehan, et al. "Factors influencing test porosity in planktonic foraminifera." Biogeosciences 15, no. 21 (2018): 6607–19. http://dx.doi.org/10.5194/bg-15-6607-2018.

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Abstract. The clustering of mitochondria near pores in the test walls of foraminifera suggests that these perforations play a critical role in metabolic gas exchange. As such, pore measurements could provide a novel means of tracking changes in metabolic rate in the fossil record. However, in planktonic foraminifera, variation in average pore area, density, and porosity (the total percentage of a test wall that is open pore space) have been variously attributed to environmental, biological, and taxonomic drivers, complicating such an interpretation. Here we examine the environmental, biologica

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Baliniak, Weronika. "Paleocene-Eocene calcareous agglutinated foraminifera from slope marl assemblages of the Fore-Magura Thrust Sheet (Polish Outer Carpathian)." Micropaleontology 64, no. 6 (2018): 379–89. http://dx.doi.org/10.47894/mpal.64.6.04.

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Organic-cemented benthic agglutinated foraminifera are a highly dominant component of flysch-type DWAF assemblages, while agglutinated foraminifera that use calcareous cement are rare or almost absent. However, in mixed assemblages, consisting of both benthic and planktonic forms, the agglutinated foraminiferal assemblages usually include calcareous agglutinants and display higher taxonomic diversity than coeval flysch-type agglutinated foraminiferal assemblages. Late Paleocene - Late Eocene mixed foraminiferal assemblages from 45 samples collected from the Fore-Magura Thrust Sheet of the Poli

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Tibert, Neil E., and R. Mark Leckie. "Cenomanian-Turonian (Upper Cretaceous) foraminifera from the westernmost Colorado Plateau, southwest Utah, U.S.A." Micropaleontology 59, no. 6 (2013): 555–78. http://dx.doi.org/10.47894/mpal.59.6.03.

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Foraminifera from the Cenomanian-Turonian Dakota Formation, Straight Cliffs Formation, Iron Springs Formation, and Tropic Shale of southwest Utah are described and illustrated in detail. The assemblage comprises 37 taxa including 27 agglutinated species and only nine calcareous taxa. The associations of the foraminifera can be summarized on the basis of their distributions relative to geologic age and formation. The lowermost units of theDakota Formation in southwestUtah and Coal Mine Mesa Arizona are characterized by a Trochammina rutherfordi mellariolium-Verneuilinoides perplexus association

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Shahin, Abdalla, and Sharif Elbaz. "Foraminiferal biostratigraphy, paleoenvironment and paleobiogeography of Cenomanian–Lower Turonian shallow marine carbonate platform in west central Sinai, Egypt." Micropaleontology 59, no. 2-3 (2013): 249–83. http://dx.doi.org/10.47894/mpal.59.2.12.

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The Cenomanian-Early Turonian succession exposed in west central Sinai was carefully studied for their foraminiferal content. Lithostratigraphically, this carbonate platform interval in the studied area include the Raha Formation (Early-Middle Cenomanian) andAbu Qada Formation (Late Cenomanian–Early Turonian). One hundred and one species belonging to 69 genera and 41 families are identified. Out of this content, 86 species belong to benthic foraminifera, and 16 belong to the planktonic ones. One larger benthic foraminiferal species namely Biconcava ribbata Shahin (n. sp.) is considered here as

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Frontalini, Fabrizio, Michael A. Kaminski, Rodolfo Coccioni, and Michal Kowalewski. "Agglutinated vs. calcareous foraminiferal assemblages as bathymetric proxies: Direct multivariate tests from modern environments." Micropaleontology 64, no. 6 (2018): 403–15. http://dx.doi.org/10.47894/mpal.64.6.06.

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Benthic foraminiferal assemblages, used widely as paleoenvironmental indicators, can potentially provide numerical estimates of relative water depth. The quality of this bathymetric proxy was tested here directly using onshore-offshore transects across two present-day marine basins: (1) Saros Bay (northern Aegean Sea), with sampling sites ranging from 15 to 500 m water depth; and (2) Marmara Sea (between Black Sea and Aegean Sea), with sampling sites ranging from 15 to 350 m water depth. For both marine basins, multivariate ordinations of calcareous and agglutinated foraminifera demonstrated t

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Ngo, Chi Kim Thi, and Bat Van Dang. "Characterization of foraminifera in the southern East Sea during the late Holocene." Journal of Mining and Earth Sciences 62, no. 6 (2021): 8–13. http://dx.doi.org/10.46326/jmes.2021.62(6).02.

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Twenty marine sediment samples have been collected in the Quaternary sediments in the southwest deep-depression East Sea region to study the foraminifera’s characterization. By analyzing foraminifer components under a microscope and taking photos under SEM, the authors determined that foraminifera fossils in the research area belonged to 01 sub-ordo as per the classification system proposed by Loeblich A.R. and Tappan H., which is Globigerinina Delage and Hérouard, 1896 sub-ordo, including four families, ten genera and 24 species. 04 families are Globigerinidae (06 genera and 13 species), Glob

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Omana, Lourdes, Ruben Lopez Doncel, Jose Ramon Torres, and Gloria Alencaster. "Biostratigraphy and paleoenvironment of the Cenomanian/Turonian boundary interval based on foraminifera from Valles-San Luis Potosi Platform, Mexico." Micropaleontology 58, no. 6 (2012): 457–85. http://dx.doi.org/10.47894/mpal.58.6.01.

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Lithologic and foraminiferal analysis from the western part of the Valles–San Luis Potosi platform reflect a sea-level rise suggesting that the platform was drowned at the Cenomanian-Turonian boundary interval. Benthic and planktic foraminiferal content of the succession was identified to establish the transition from the shallow-water carbonate sedimentation with abundant larger benthic foraminifera, algae, rudists and other molluscs, corals, echinoderms, worms changing to hemipelagic-pelagic sediments containing calcispheres and opportunistic foraminifers (r-strategists), such as whitenelli

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D'Hondt, Steven, and James C. Zachos. "Cretaceous foraminifera and the evolutionary history of planktic photosymbiosis." Paleobiology 24, no. 4 (1998): 512–23. http://dx.doi.org/10.1017/s0094837300020133.

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Ecotypic correlations between stable isotopic signals and skeletal size indicate that some Late Cretaceous serial planktic foraminifera were strongly photosymbiotic. In contrast, coeval trochospiral planktic foraminifera do not exhibit the isotope/size signatures that typify strongly photosymbiotic species. Comparison to Cenozoic taxa demonstrates that photosymbiosis has recurred throughout planktic foraminiferal history and has evolved independently in superfamilies characterized by very different gross skeletal morphologies. The historical contingency of that evolution is illustrated by the

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Langer, Martin R., Gloria H. Mouanga, and Olugbenga T. Fajemila. "Shallow-water nearshore benthic foraminifera assemblages from Gabon." Micropaleontology 62, no. 1 (2016): 69–80. http://dx.doi.org/10.47894/mpal.62.1.02.

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The Gulf of Guinea is a hotspot of marine diversity, with unique biotas. We provide the first survey of shallow-water foraminifera from nearshore coastal waters of Gabon, an area from which modern benthic foraminifera are virtually unknown. We document the composition of benthic assemblages and assess their biogeographic relation to adjacent faunal provinces. Our analysis survey documents that shallow-water sediments harbor abundant and relatively diverse assemblages of symbiont-bearing and other smaller foraminifera. The 39 species recorded from nearshore coastal waters off Gabon contrast wit

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Saha, Tumpa, and Subrota Kumar Saha. "Systematics of Modern Benthic Foraminiferal Assemblages From the Deltaic Mangrove Ecosystem of Sundarbans." Journal of the Asiatic Society of Bangladesh, Science 47, no. 2 (2021): 121–36. http://dx.doi.org/10.3329/jasbs.v47i2.57276.

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The contemporary intertidal foraminifera and estuarine environment information were collected from the four sites adjoining the deltaic mangrove environment in the Sundarbans. The marsh zones of the south-western coastal region of Bangladesh were examined for modern benthic foraminifera and to expound on the relationship of the foraminiferal assemblages with the environment. Due to high inaccessibility and remoteness, the taxonomic study of foraminifera and its depositional environment remains largely overlooked in the Sundarbans of Bangladesh. This study includes a detailed survey of depositi

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Bhattacharjee, Dola, B. C. Choudhury, K. Sivakumar, et al. "Benthic foraminifera assemblages in turtle congregation sites along the north-east coast of India." Journal of the Marine Biological Association of the United Kingdom 93, no. 4 (2012): 877–87. http://dx.doi.org/10.1017/s0025315412001440.

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Near-shore recent benthic foraminifera from three ecologically important (Olive Ridley turtle congregation sites) but vulnerable sites encompassing 23 sampling stations (12 in Rushikulya, 5 in Devi and 6 in Gahirmatha) along coastal Orissa, north-west Bay of Bengal (BoB) in India were studied for the first time for their composition, distribution and assemblage patterns. Thirty-nine species of benthic foraminifers (from 6 orders and 23 families) were identified of which all 39 were present in Rushikulya, 22 in Devi and 12 in Gahirmatha with abundance ranging from 35–2620 individuals/10 cm3 in

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Schmidt, Christiane, Emmanuelle Geslin, Joan M. Bernhard, et al. "Deposit-feeding of Nonionellina labradorica (foraminifera) from an Arctic methane seep site and possible association with a methanotroph." Biogeosciences 19, no. 16 (2022): 3897–909. http://dx.doi.org/10.5194/bg-19-3897-2022.

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Abstract. Several foraminifera are deposit feeders that consume organic detritus (dead particulate organic material with entrained bacteria). However, the role of such foraminifera in the benthic food web remains understudied. Foraminifera feeding on methanotrophic bacteria, which are 13C-depleted, may cause negative cytoplasmic and/or calcitic δ13C values. To test whether the foraminiferal diet includes methanotrophs, we performed a short-term (20 h) feeding experiment with Nonionellina labradorica from an active Arctic methane-emission site (Storfjordrenna, Barents Sea) using the marine meth

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