Articles | Volume 40, issue 1
https://doi.org/10.5194/jm-40-61-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/jm-40-61-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
07 Jun 2021
Research article |
| 07 Jun 2021
| 07 Jun 2021
Biogeographic distribution of three phylotypes (T1, T2 and T6) of Ammonia (foraminifera, Rhizaria) around Great Britain: new insights from combined molecular and morphological recognition
UMR 6112 LPG-BIAF Recent and Fossil Bio-Indicators, University of
Angers, University of Nantes, 2 Boulevard Lavoisier, 49045 Angers, France
Magali Schweizer
UMR 6112 LPG-BIAF Recent and Fossil Bio-Indicators, University of
Angers, University of Nantes, 2 Boulevard Lavoisier, 49045 Angers, France
Aurélia Mouret
UMR 6112 LPG-BIAF Recent and Fossil Bio-Indicators, University of
Angers, University of Nantes, 2 Boulevard Lavoisier, 49045 Angers, France
Sophie Quinchard
UMR 6112 LPG-BIAF Recent and Fossil Bio-Indicators, University of
Angers, University of Nantes, 2 Boulevard Lavoisier, 49045 Angers, France
Salha A. Saad
School of Life Sciences, University of Nottingham, University Park,
Nottingham, NG7 2RD, UK
Vincent M. P. Bouchet
Univ. Lille, CNRS, Univ. Littoral Côte d'Opale, UMR 8187, LOG,
Laboratoire d'Océanologie et de Géosciences, Station Marine de
Wimereux, 59000, Lille, France
Christopher M. Wade
School of Life Sciences, University of Nottingham, University Park,
Nottingham, NG7 2RD, UK
Frans J. Jorissen
UMR 6112 LPG-BIAF Recent and Fossil Bio-Indicators, University of
Angers, University of Nantes, 2 Boulevard Lavoisier, 49045 Angers, France
Related authors
Julien Richirt, Satoshi Okada, Yoshiyuki Ishitani, Katsuyuki Uematsu, Akihiro Tame, Kaya Oda, Noriyuki Isobe, Toyoho Ishimura, Masashi Tsuchiya, and Hidetaka Nomaki
EGUsphere, https://doi.org/10.5194/egusphere-2024-60, https://doi.org/10.5194/egusphere-2024-60, 2024
Short summary
Short summary
The first benthic Foraminifera having a composite test (i.e. shell) made of opal coating the inside of the calcitic layer is reported. Based on the morphology and composition of this novel opal layer using comprehensive techniques, we concluded that this layer is precipitated by the Foraminifera itself. We further discuss the potential functions of this composite test and implications for palaeoceanographic reconstructions and the silica cycle at global scale.
Julien Richirt, Bettina Riedel, Aurélia Mouret, Magali Schweizer, Dewi Langlet, Dorina Seitaj, Filip J. R. Meysman, Caroline P. Slomp, and Frans J. Jorissen
Biogeosciences, 17, 1415–1435, https://doi.org/10.5194/bg-17-1415-2020, https://doi.org/10.5194/bg-17-1415-2020, 2020
Short summary
Short summary
The paper presents the response of benthic foraminiferal communities to seasonal absence of oxygen coupled with the presence of hydrogen sulfide, considered very harmful for several living organisms.
Our results suggest that the foraminiferal community mainly responds as a function of the duration of the adverse conditions.
This knowledge is especially useful to better understand the ecology of benthic foraminifera but also in the context of palaeoceanographic interpretations.
Julien Richirt, Satoshi Okada, Yoshiyuki Ishitani, Katsuyuki Uematsu, Akihiro Tame, Kaya Oda, Noriyuki Isobe, Toyoho Ishimura, Masashi Tsuchiya, and Hidetaka Nomaki
EGUsphere, https://doi.org/10.5194/egusphere-2024-60, https://doi.org/10.5194/egusphere-2024-60, 2024
Short summary
Short summary
The first benthic Foraminifera having a composite test (i.e. shell) made of opal coating the inside of the calcitic layer is reported. Based on the morphology and composition of this novel opal layer using comprehensive techniques, we concluded that this layer is precipitated by the Foraminifera itself. We further discuss the potential functions of this composite test and implications for palaeoceanographic reconstructions and the silica cycle at global scale.
Dewi Langlet, Florian Mermillod-Blondin, Noémie Deldicq, Arthur Bauville, Gwendoline Duong, Lara Konecny, Mylène Hugoni, Lionel Denis, and Vincent M. P. Bouchet
Biogeosciences, 20, 4875–4891, https://doi.org/10.5194/bg-20-4875-2023, https://doi.org/10.5194/bg-20-4875-2023, 2023
Short summary
Short summary
Benthic foraminifera are single-cell marine organisms which can move in the sediment column. They were previously reported to horizontally and vertically transport sediment particles, yet the impact of their motion on the dissolved fluxes remains unknown. Using microprofiling, we show here that foraminiferal burrow formation increases the oxygen penetration depth in the sediment, leading to a change in the structure of the prokaryotic community.
Corentin Guilhermic, Maria Pia Nardelli, Aurélia Mouret, Damien Le Moigne, and Hélène Howa
Biogeosciences, 20, 3329–3351, https://doi.org/10.5194/bg-20-3329-2023, https://doi.org/10.5194/bg-20-3329-2023, 2023
Short summary
Short summary
Coastal seas experience sediment discharges whose intensity and frequency can strongly be affected by human activities and climate change. We analysed the response of benthic species in an experimental set-up. After the burial under a single thick layer of sediment or multiple thin layers at different times, the analysed species migrate rapidly towards the surface. A stronger effect of a single thick deposit on standing stocks and biodiversity is visible compared to frequent low-sediment inputs.
Christiane Schmidt, Emmanuelle Geslin, Joan M. Bernhard, Charlotte LeKieffre, Mette Marianne Svenning, Helene Roberge, Magali Schweizer, and Giuliana Panieri
Biogeosciences, 19, 3897–3909, https://doi.org/10.5194/bg-19-3897-2022, https://doi.org/10.5194/bg-19-3897-2022, 2022
Short summary
Short summary
This study is the first to show non-selective deposit feeding in the foraminifera Nonionella labradorica and the possible uptake of methanotrophic bacteria. We carried out a feeding experiment with a marine methanotroph to examine the ultrastructure of the cell and degradation vacuoles using transmission electron microscopy (TEM). The results revealed three putative methanotrophs at the outside of the cell/test, which could be taken up via non-targeted grazing in seeps or our experiment.
Inda Brinkmann, Christine Barras, Tom Jilbert, Tomas Næraa, K. Mareike Paul, Magali Schweizer, and Helena L. Filipsson
Biogeosciences, 19, 2523–2535, https://doi.org/10.5194/bg-19-2523-2022, https://doi.org/10.5194/bg-19-2523-2022, 2022
Short summary
Short summary
The concentration of the trace metal barium (Ba) in coastal seawater is a function of continental input, such as riverine discharge. Our geochemical records of the severely hot and dry year 2018, and following wet year 2019, reveal that prolonged drought imprints with exceptionally low Ba concentrations in benthic foraminiferal calcium carbonates of coastal sediments. This highlights the potential of benthic Ba / Ca to trace past climate extremes and variability in coastal marine records.
Constance Choquel, Emmanuelle Geslin, Edouard Metzger, Helena L. Filipsson, Nils Risgaard-Petersen, Patrick Launeau, Manuel Giraud, Thierry Jauffrais, Bruno Jesus, and Aurélia Mouret
Biogeosciences, 18, 327–341, https://doi.org/10.5194/bg-18-327-2021, https://doi.org/10.5194/bg-18-327-2021, 2021
Short summary
Short summary
Marine microorganisms such as foraminifera are able to live temporarily without oxygen in sediments. In a Swedish fjord subjected to seasonal oxygen scarcity, a change in fauna linked to the decrease in oxygen and the increase in an invasive species was shown. The invasive species respire nitrate until 100 % of the nitrate porewater in the sediment and could be a major contributor to nitrogen balance in oxic coastal ecosystems. But prolonged hypoxia creates unfavorable conditions to survive.
Julien Richirt, Bettina Riedel, Aurélia Mouret, Magali Schweizer, Dewi Langlet, Dorina Seitaj, Filip J. R. Meysman, Caroline P. Slomp, and Frans J. Jorissen
Biogeosciences, 17, 1415–1435, https://doi.org/10.5194/bg-17-1415-2020, https://doi.org/10.5194/bg-17-1415-2020, 2020
Short summary
Short summary
The paper presents the response of benthic foraminiferal communities to seasonal absence of oxygen coupled with the presence of hydrogen sulfide, considered very harmful for several living organisms.
Our results suggest that the foraminiferal community mainly responds as a function of the duration of the adverse conditions.
This knowledge is especially useful to better understand the ecology of benthic foraminifera but also in the context of palaeoceanographic interpretations.
Inge van Dijk, Christine Barras, Lennart Jan de Nooijer, Aurélia Mouret, Esmee Geerken, Shai Oron, and Gert-Jan Reichart
Biogeosciences, 16, 2115–2130, https://doi.org/10.5194/bg-16-2115-2019, https://doi.org/10.5194/bg-16-2115-2019, 2019
Short summary
Short summary
Systematics in the incorporation of different elements in shells of marine organisms can be used to test calcification models and thus processes involved in precipitation of calcium carbonates. On different scales, we observe a covariation of sulfur and magnesium incorporation in shells of foraminifera, which provides insights into the mechanics behind shell formation. The observed patterns imply that all species of foraminifera actively take up calcium and carbon in a coupled process.
Shauna Ní Fhlaithearta, Christophe Fontanier, Frans Jorissen, Aurélia Mouret, Adriana Dueñas-Bohórquez, Pierre Anschutz, Mattias B. Fricker, Detlef Günther, Gert J. de Lange, and Gert-Jan Reichart
Biogeosciences, 15, 6315–6328, https://doi.org/10.5194/bg-15-6315-2018, https://doi.org/10.5194/bg-15-6315-2018, 2018
Short summary
Short summary
This study looks at how foraminifera interact with their geochemical environment in the seabed. We focus on the incorporation of the trace metal manganese (Mn), with the aim of developing a tool to reconstruct past pore water profiles. Manganese concentrations in foraminifera are investigated relative to their ecological preferences and geochemical environment. This study demonstrates that Mn in foraminiferal tests is a promising tool to reconstruct oxygen conditions in the seabed.
Jeroen Groeneveld, Helena L. Filipsson, William E. N. Austin, Kate Darling, David McCarthy, Nadine B. Quintana Krupinski, Clare Bird, and Magali Schweizer
J. Micropalaeontol., 37, 403–429, https://doi.org/10.5194/jm-37-403-2018, https://doi.org/10.5194/jm-37-403-2018, 2018
Short summary
Short summary
Current climate and environmental changes strongly affect shallow marine and coastal areas like the Baltic Sea. The combination of foraminiferal geochemistry and environmental parameters demonstrates that in a highly variable setting like the Baltic Sea, it is possible to separate different environmental impacts on the foraminiferal assemblages and therefore use chemical factors to reconstruct how seawater temperature, salinity, and oxygen varied in the past and may vary in the future.
Jassin Petersen, Christine Barras, Antoine Bézos, Carole La, Lennart J. de Nooijer, Filip J. R. Meysman, Aurélia Mouret, Caroline P. Slomp, and Frans J. Jorissen
Biogeosciences, 15, 331–348, https://doi.org/10.5194/bg-15-331-2018, https://doi.org/10.5194/bg-15-331-2018, 2018
Short summary
Short summary
In Lake Grevelingen, a coastal ecosystem, foraminifera experience important temporal variations in oxygen concentration and in pore water manganese. The high resolution of LA-ICP-MS allows us to analyse the chambers of foraminiferal shells separately and to obtain signals from a series of calcification events. We estimate the variability in Mn/Ca observed within single shells due to biomineralization and show that a substantial part of the signal is related to environmental variability.
Marc Theodor, Gerhard Schmiedl, Frans Jorissen, and Andreas Mackensen
Biogeosciences, 13, 6385–6404, https://doi.org/10.5194/bg-13-6385-2016, https://doi.org/10.5194/bg-13-6385-2016, 2016
Thierry Jauffrais, Bruno Jesus, Edouard Metzger, Jean-Luc Mouget, Frans Jorissen, and Emmanuelle Geslin
Biogeosciences, 13, 2715–2726, https://doi.org/10.5194/bg-13-2715-2016, https://doi.org/10.5194/bg-13-2715-2016, 2016
Short summary
Short summary
Some benthic foraminifera can incorporate chloroplasts from microalgae. We investigated chloroplast functionality of two benthic foraminifera (Haynesina germanica & Ammonia tepida) exposed to different light levels. Only H. germanica was capable of using the kleptoplasts, showing net oxygen production. Chloroplast functionality time was longer in darkness (2 weeks) than at high light (1 week). Kleptoplasts are unlikely to be completely functional, thus requiring continuous chloroplast resupply.
A. Thibault de Chanvalon, E. Metzger, A. Mouret, F. Cesbron, J. Knoery, E. Rozuel, P. Launeau, M. P. Nardelli, F. J. Jorissen, and E. Geslin
Biogeosciences, 12, 6219–6234, https://doi.org/10.5194/bg-12-6219-2015, https://doi.org/10.5194/bg-12-6219-2015, 2015
Short summary
Short summary
We present a new rapid and accurate protocol to simultaneously sample, in two dimensions, benthic living foraminifera at the centimetre scale and dissolved iron and phosphorus at the submillimetre scale. It was applied to a highly bioturbated site in a mudflat of the Loire estuary and showed that, in the suboxic zone, foraminifera are less affected by active burrows (i.e. reoxygenated) than by iron reactive hotspots. This unexpected result calls for a generalization of this new protocol.
C. Caulle, M. Mojtahid, A. J. Gooday, F. J. Jorissen, and H. Kitazato
Biogeosciences, 12, 5005–5019, https://doi.org/10.5194/bg-12-5005-2015, https://doi.org/10.5194/bg-12-5005-2015, 2015
M. P. Nardelli, C. Barras, E. Metzger, A. Mouret, H. L. Filipsson, F. Jorissen, and E. Geslin
Biogeosciences, 11, 4029–4038, https://doi.org/10.5194/bg-11-4029-2014, https://doi.org/10.5194/bg-11-4029-2014, 2014
E. Metzger, D. Langlet, E. Viollier, N. Koron, B. Riedel, M. Stachowitsch, J. Faganeli, M. Tharaud, E. Geslin, and F. Jorissen
Biogeosciences, 11, 2211–2224, https://doi.org/10.5194/bg-11-2211-2014, https://doi.org/10.5194/bg-11-2211-2014, 2014
D. Langlet, C. Baal, E. Geslin, E. Metzger, M. Zuschin, B. Riedel, N. Risgaard-Petersen, M. Stachowitsch, and F. J. Jorissen
Biogeosciences, 11, 1775–1797, https://doi.org/10.5194/bg-11-1775-2014, https://doi.org/10.5194/bg-11-1775-2014, 2014
C. Caulle, K. A. Koho, M. Mojtahid, G. J. Reichart, and F. J. Jorissen
Biogeosciences, 11, 1155–1175, https://doi.org/10.5194/bg-11-1155-2014, https://doi.org/10.5194/bg-11-1155-2014, 2014
D. Langlet, E. Geslin, C. Baal, E. Metzger, F. Lejzerowicz, B. Riedel, M. Zuschin, J. Pawlowski, M. Stachowitsch, and F. J. Jorissen
Biogeosciences, 10, 7463–7480, https://doi.org/10.5194/bg-10-7463-2013, https://doi.org/10.5194/bg-10-7463-2013, 2013
Related subject area
Benthic foraminifera
Late Miocene to Early Pliocene benthic foraminifera from the Tasman Sea (International Ocean Discovery Program Site U1506)
Triassic and Jurassic possible planktonic foraminifera and the assemblages recovered from the Ogrodzieniec Glauconitic Marls Formation (uppermost Callovian and lowermost Oxfordian, Jurassic) of the Polish Basin
Benthic foraminiferal patchiness – revisited
Agglutinated foraminifera from the Turonian–Coniacian boundary interval in Europe – paleoenvironmental remarks and stratigraphy
Meghalayan environmental evolution of the Thapsus coast (Tunisia) as inferred from sedimentological and micropaleontological proxies
Biometry and taxonomy of Adriatic Ammonia species from Bellaria–Igea Marina (Italy)
Comparative analysis of six common foraminiferal species of the genera Cassidulina, Paracassidulina, and Islandiella from the Arctic–North Atlantic domain
Microfossil assemblages and geochemistry for interpreting the incidence of the Jenkyns Event (early Toarcian) in the south-eastern Iberian Palaeomargin (External Subbetic, SE Spain)
Micropalaeontology, biostratigraphy, and depositional setting of the mid-Cretaceous Derdere Formation at Derik, Mardin, south-eastern Turkey
Latest Oligocene to earliest Pliocene deep-sea benthic foraminifera from Ocean Drilling Program (ODP) Sites 752, 1168 and 1139, southern Indian Ocean
Benthic foraminifera indicate Glacial North Pacific Intermediate Water and reduced primary productivity over Bowers Ridge, Bering Sea, since the Mid-Brunhes Transition
Reconstructing the Christian Malford ecosystem in the Oxford Clay Formation (Callovian, Jurassic) of Wiltshire: exceptional preservation, taphonomy, burial and compaction
Benthic foraminiferal assemblages and test accumulation in coastal microhabitats on San Salvador, Bahamas
Assessing proxy signatures of temperature, salinity, and hypoxia in the Baltic Sea through foraminifera-based geochemistry and faunal assemblages
New species of Mesozoic benthic foraminifera from the former British Petroleum micropalaeontology collection
Monitoring benthic foraminiferal dynamics at Bottsand coastal lagoon (western Baltic Sea)
Paleocene orthophragminids from the Lakadong Limestone, Mawmluh Quarry section, Meghalaya (Shillong, NE India): implications for the regional geology and paleobiogeography
Larger foraminifera of the Devil's Den and Blue Hole sinkholes, Florida
Assessing the composition of fragmented agglutinated foraminiferal assemblages in ancient sediments: comparison of counting and area-based methods in Famennian samples (Late Devonian)
Maria Elena Gastaldello, Claudia Agnini, and Laia Alegret
J. Micropalaeontol., 43, 1–35, https://doi.org/10.5194/jm-43-1-2024, https://doi.org/10.5194/jm-43-1-2024, 2024
Short summary
Short summary
This paper examines benthic foraminifera, single-celled organisms, at Integrated Ocean Drilling Program Site U1506 in the Tasman Sea from the Late Miocene to the Early Pliocene (between 7.4 to 4.5 million years ago). We described and illustrated the 36 most common species; analysed the past ocean depth of the site; and investigated the environmental conditions at the seafloor during the Biogenic Bloom phenomenon, a global phase of high marine primary productivity.
Malcolm B. Hart, Holger Gebhardt, Eiichi Setoyama, Christopher W. Smart, and Jarosław Tyszka
J. Micropalaeontol., 42, 277–290, https://doi.org/10.5194/jm-42-277-2023, https://doi.org/10.5194/jm-42-277-2023, 2023
Short summary
Short summary
<p>In the 1960s-1970s some species of Triassic foraminifera were described as having a planktic mode of life. This was questioned and Malcolm Hart studied the material in Vienna, taking some to London for SEM imaging. Samples collected from Poland are compared to these images and the suggested planktic mode of life discussed. Foraminifera collected in Ogrodzieniec are glauconitic steinkerns with no test material present and none of the diagnostic features needed to determine "new" species.</p>
Joachim Schönfeld, Nicolaas Glock, Irina Polovodova Asteman, Alexandra-Sophie Roy, Marié Warren, Julia Weissenbach, and Julia Wukovits
J. Micropalaeontol., 42, 171–192, https://doi.org/10.5194/jm-42-171-2023, https://doi.org/10.5194/jm-42-171-2023, 2023
Short summary
Short summary
Benthic organisms show aggregated distributions due to the spatial heterogeneity of niches or food. We analysed the distribution of Globobulimina turgida in the Gullmar Fjord, Sweden, with a data–model approach. The population densities did not show any underlying spatial structure but a random log-normal distribution. A temporal data series from the same site depicted two cohorts of samples with high or low densities, which represent hypoxic or well-ventilated conditions in the fjord.
Richard M. Besen, Kathleen Schindler, Andrew S. Gale, and Ulrich Struck
J. Micropalaeontol., 42, 117–146, https://doi.org/10.5194/jm-42-117-2023, https://doi.org/10.5194/jm-42-117-2023, 2023
Short summary
Short summary
Turonian–Coniacian agglutinated foraminiferal assemblages from calcareous deposits from the temperate European shelf realm were studied. Acmes of agglutinated foraminifera correlate between different sections and can be used for paleoenvironmental analysis expressing inter-regional changes. Agglutinated foraminiferal morphogroups display a gradual shift from Turonian oligotrophic environments towards more mesotrophic conditions in the latest Turonian and Coniacian.
Mohamed Kamoun, Martin R. Langer, Chahira Zaibi, and Mohamed Ben Youssef
J. Micropalaeontol., 41, 129–147, https://doi.org/10.5194/jm-41-129-2022, https://doi.org/10.5194/jm-41-129-2022, 2022
Short summary
Short summary
Sedimentology and micropaleontology analyses provide the dynamic processes that shaped the environmental evolution of the Thapsus coastline (Tunisia) including its lagoon and Roman harbor. The highlights are paleoenvironmental change records from the coast of Thapsus for the last 4000 years, benthic foraminiferal biota recording the dynamic coastal processes, two transgressive events being recognized, and a presented model for the paleoenvironmental evolution.
Joachim Schönfeld, Valentina Beccari, Sarina Schmidt, and Silvia Spezzaferri
J. Micropalaeontol., 40, 195–223, https://doi.org/10.5194/jm-40-195-2021, https://doi.org/10.5194/jm-40-195-2021, 2021
Short summary
Short summary
Ammonia beccarii was described from Rimini Beach in 1758. This taxon has often been mistaken with other species in the past. Recent studies assessed the biometry of Ammonia species and integrated it with genetic data but relied on a few large and dead specimens only. In a comprehensive approach, we assessed the whole living Ammonia assemblage near the type locality of A. beccarii and identified parameters which are robust and facilitate a secure species identification.
Alix G. Cage, Anna J. Pieńkowski, Anne Jennings, Karen Luise Knudsen, and Marit-Solveig Seidenkrantz
J. Micropalaeontol., 40, 37–60, https://doi.org/10.5194/jm-40-37-2021, https://doi.org/10.5194/jm-40-37-2021, 2021
Short summary
Short summary
Morphologically similar benthic foraminifera taxa are difficult to separate, resulting in incorrect identifications, complications understanding species-specific ecological preferences, and flawed reconstructions of past environments. Here we provide descriptions and illustrated guidelines on how to separate some key Arctic–North Atlantic species to circumvent taxonomic confusion, improve understanding of ecological affinities, and work towards more accurate palaeoenvironmental reconstructions.
Matías Reolid
J. Micropalaeontol., 39, 233–258, https://doi.org/10.5194/jm-39-233-2020, https://doi.org/10.5194/jm-39-233-2020, 2020
Short summary
Short summary
During the early Toarcian (Jurassic, 180 Ma) a hyperthermal event, the Jenkyns Event, occurred, affecting the oxygenation of the sea bottom. The integrated study of foraminiferal and ostracod assemblages with geochemical proxies allows us to interpret the incidence of this event in the Western Tethys, more exactly in the South Iberian Palaeomargin. Diminution of diversity, changes in abundance, and opportunist vs. specialist are coincident with the event.
Michael D. Simmons, Vicent Vicedo, İsmail Ö. Yılmaz, İzzet Hoşgör, Oğuz Mülayim, and Bilal Sarı
J. Micropalaeontol., 39, 203–232, https://doi.org/10.5194/jm-39-203-2020, https://doi.org/10.5194/jm-39-203-2020, 2020
Short summary
Short summary
The microfossils from a Cretaceous outcrop in southern Turkey are described and used to interpret the age of the rocks and their depositional setting and how sea level has changed. These results are compared both locally and regionally, identifying broad correspondence with regional sea level events. A new species of microfossil is described, confirming that many microfossils of Arabia are localised in their distribution.
Dana Ridha, Ian Boomer, and Kirsty M. Edgar
J. Micropalaeontol., 38, 189–229, https://doi.org/10.5194/jm-38-189-2019, https://doi.org/10.5194/jm-38-189-2019, 2019
Short summary
Short summary
This paper records the spatial and temporal distribution of deep-sea benthic microfossils (Foraminifera, single-celled organisms) from the latest Oligocene to earliest Pliocene (about 28 to 4 million years ago) from Ocean Drilling Program cores in the southern Indian Ocean. Key taxa are illustrated and their stratigraphic distribution is presented as they respond to a period of marked global climatic changes, with a pronounced warm period in the mid-Miocene followed by subsequent cooling.
Sev Kender, Adeyinka Aturamu, Jan Zalasiewicz, Michael A. Kaminski, and Mark Williams
J. Micropalaeontol., 38, 177–187, https://doi.org/10.5194/jm-38-177-2019, https://doi.org/10.5194/jm-38-177-2019, 2019
Short summary
Short summary
The Mid-Brunhes Transition saw an enigmatic shift towards increased glacial temperature variations about 400 kyr ago. High-latitude Southern Ocean stratification may have been a causal factor, but little is known of the changes to the high-latitude Bering Sea. We generated benthic foraminiferal assemblage data and are the first to document a glacial decrease in episodic primary productivity since the Mid-Brunhes Transition, signifying possible reductions in sea ice summer stratification.
Malcolm B. Hart, Kevin N. Page, Gregory D. Price, and Christopher W. Smart
J. Micropalaeontol., 38, 133–142, https://doi.org/10.5194/jm-38-133-2019, https://doi.org/10.5194/jm-38-133-2019, 2019
Short summary
Short summary
The use of micropalaeontological samples from mudstone successions that have suffered de-watering and compaction means that subtle, lamina-thick, changes in assemblages may be lost when samples are processed that are 1–2 cm thick. As most micropalaeontological samples are often 2–5 cm thick, one must be then cautious of interpretations based on such short-duration changes. This work is part of an integrated study of the Christian Malford lagerstätten that has resulted in a number of papers.
Andrea Fischel, Marit-Solveig Seidenkrantz, and Bent Vad Odgaard
J. Micropalaeontol., 37, 499–518, https://doi.org/10.5194/jm-37-499-2018, https://doi.org/10.5194/jm-37-499-2018, 2018
Short summary
Short summary
Benthic foraminifera often colonize marine underwater vegetation in tropical regions. We studied these so-called epiphytic foraminifera in a shallow bay in the Bahamas. Here the foraminifera differed between types of vegetation, but sedimentological processes seem to be the main controller of the dead foraminifera in the sediment. This indicates that in carbonate platform regions, epiphytic foraminifera should only be used cautiously as direct indicators of past in situ marine vegetation.
Jeroen Groeneveld, Helena L. Filipsson, William E. N. Austin, Kate Darling, David McCarthy, Nadine B. Quintana Krupinski, Clare Bird, and Magali Schweizer
J. Micropalaeontol., 37, 403–429, https://doi.org/10.5194/jm-37-403-2018, https://doi.org/10.5194/jm-37-403-2018, 2018
Short summary
Short summary
Current climate and environmental changes strongly affect shallow marine and coastal areas like the Baltic Sea. The combination of foraminiferal geochemistry and environmental parameters demonstrates that in a highly variable setting like the Baltic Sea, it is possible to separate different environmental impacts on the foraminiferal assemblages and therefore use chemical factors to reconstruct how seawater temperature, salinity, and oxygen varied in the past and may vary in the future.
Lyndsey R. Fox, Stephen Stukins, Tom Hill, and Haydon W. Bailey
J. Micropalaeontol., 37, 395–401, https://doi.org/10.5194/jm-37-395-2018, https://doi.org/10.5194/jm-37-395-2018, 2018
Short summary
Short summary
This paper describes five new Mesozoic deep-water benthic foraminifera from the former British Petroleum microfossil reference collections at the Natural History Museum, London.
Joachim Schönfeld
J. Micropalaeontol., 37, 383–393, https://doi.org/10.5194/jm-37-383-2018, https://doi.org/10.5194/jm-37-383-2018, 2018
Short summary
Short summary
Benthic foraminifera from the Bottsand coastal lagoon, western Baltic Sea, have been monitored annually since 2003 and accompanied by hydrographic measurements since 2012. Elphidium incertum, a stenohaline species of the Baltic deep water fauna, colonised the lagoon in 2016, most likely during a period of salinities > 19 units and average temperatures of 18 °C in early autumn. The high salinities probably triggered their germination from a propagule bank in the lagoonal bottom sediment.
Ercan Özcan, Johannes Pignatti, Christer Pereira, Ali Osman Yücel, Katica Drobne, Filippo Barattolo, and Pratul Kumar Saraswati
J. Micropalaeontol., 37, 357–381, https://doi.org/10.5194/jm-37-357-2018, https://doi.org/10.5194/jm-37-357-2018, 2018
Short summary
Short summary
We carried out a morphometric study of late Paleocene orthophragminids from the Mawmluh Quarry section in the Shillong Plateau, India. We recorded the occurrence of two species of Orbitoclypeus, whereas the other typical Tethyan genera Discocyclina is absent. We also identified the associated benthic foraminifera and algae. Shallow benthic zones (SBZ) 3 and 4 have been recognized in the section. The timing of transition from shallow marine to continental deposition is commented on.
Laura J. Cotton, Wolfgang Eder, and James Floyd
J. Micropalaeontol., 37, 347–356, https://doi.org/10.5194/jm-37-347-2018, https://doi.org/10.5194/jm-37-347-2018, 2018
Short summary
Short summary
Shallow-water carbonate deposits rich in larger benthic foraminifera (LBF) are well-known from the Eocene of the Americas. However, there have been few recent LBF studies in this region. Here we present the LBF ranges from two previously unpublished sections from the Ocala limestone, Florida. The study indicates that the lower member of the Ocala limestone may be Bartonian rather than Priabonian in age, with implications for regional biostratigraphy.
Catherine Girard, Anne-Béatrice Dufour, Anne-Lise Charruault, and Sabrina Renaud
J. Micropalaeontol., 37, 87–95, https://doi.org/10.5194/jm-37-87-2018, https://doi.org/10.5194/jm-37-87-2018, 2018
Short summary
Short summary
This study constitutes an attempt to analyze the variations in foraminiferal assemblages using the morphogroup approach in the Late Devonian. Our results show that both methods of estimating morphotype percentages, the traditional counting and the cumulated area methods, provide similar results, are highly correlated with each other, and provide similar relationships with paleoenvironmental proxies.
Cited articles
Alve, E.: Benthic foraminiferal responses to estuarine pollution; a review,
J. Foramin. Res., 25, 190–203,
https://doi.org/10.2113/gsjfr.25.3.190, 1995.
Alve, E. and Goldstein, S. T.: Dispersal, survival and delayed growth of
benthic foraminiferal propagules, J. Sea Res., 63, 36–51,
https://doi.org/10.1016/j.seares.2009.09.003, 2010.
Bailly Du Bois, P. and Dumas, F.: TRANSMER, hydrodynamic model for medium- and
long-term simulation of radionuclides transfers in the English Channel and
southern North Sea, Radioprotection, 40, S575–S580,
https://doi.org/10.1051/radiopro:2005s1-084, 2005.
Barnay, A., Ellien, C., Gentil, F., and Thiébaut, E.: A model study on
variations in larval supply: are populations of the polychaete Owenia fusiformis in the
English Channel open or closed?, Helgoland Mar. Res., 56, 229,
https://doi.org/10.1007/s10152-002-0122-2, 2003.
Bird, C., Schweizer, M., Roberts, A., Austin, W. E. N., Knudsen, K. L.,
Evans, K. M., Filipsson, H. L., Sayer, M. D. J., Geslin, E., and Darling, K.
F.: The genetic diversity, morphology, biogeography, and taxonomic
designations of Ammonia (Foraminifera) in the Northeast Atlantic, Mar.
Micropaleosntol., https://doi.org/10.1016/j.marmicro.2019.02.001, 2020.
Bouchet, V. M. P., Debenay, J.-P., Sauriau, P.-G., Radford-Knoery, J., and
Soletchnik, P.: Effects of short-term environmental disturbances on living
benthic foraminifera during the Pacific oyster summer mortality in the
Marennes-Oléron Bay (France), Mar. Environ. Res., 64,
358–383, https://doi.org/10.1016/j.marenvres.2007.02.007, 2007.
Bradshaw, J. S.: Laboratory Studies on the Rate of Growth of the
Foraminifer, “Streblus beccarii (Linné) var. tepida (Cushman)”, J. Paleontol.,
31, 1138–1147, 1957.
Brunner, C. A. and Biscaye, P. E.: Storm-driven transport of foraminifers
from the shelf to the upper slope, southern Middle Atlantic Bight,
Cont. Shelf Res., 17, 491–508,
https://doi.org/10.1016/S0278-4343(96)00043-X, 1997.
Brunner, C. A. and Biscaye, P. E.: Production and resuspension of planktonic
foraminifers at the shelf break of the Southern Middle Atlantic Bight, Deep-Sea Res. Pt. I, 50, 247–268,
https://doi.org/10.1016/S0967-0637(02)00165-6, 2003.
Calvo-Marcilese, L. and Langer, M. R.: Breaching biogeographic barriers: the
invasion of Haynesina germanica (Foraminifera, Protista) in the Bahía Blanca estuary,
Argentina, Biol. Invasions, 12, 3299–3306,
https://doi.org/10.1007/s10530-010-9723-x, 2010.
Carstensen, J., Andersen, J. H., Gustafsson, B. G., and Conley, D. J.:
Deoxygenation of the Baltic Sea during the last century, P. Natl. Acad. Sci. USA, 111,
5628–5633, https://doi.org/10.1073/pnas.1323156111, 2014.
Cearreta, A.: Population dynamics of benthic foraminifera in the Santoña
estuary, Spain, Revue de Paléobiologie, 2, 721–724, 1988.
Choquel, C., Geslin, E, Metzger, E., Houliez, E., Jesus, B., Prins, A., Jauffrais, T., Bénéteau, E., and Mouret, A.: Spatiotemporal dynamics of living benthic foraminifera revealed by multiple environmental parameters and in situ trophic model in intertidal mudflat (Bourgneuf Bay, France), in preparation, 2021.
Cugier, P. and Le Hir, P.: Development of a 3D Hydrodynamic Model for
Coastal Ecosystem Modelling. Application to the Plume of the Seine River
(France), Estuar. Coast. Shelf S., 55, 673–695,
https://doi.org/10.1006/ecss.2001.0875, 2002.
Dauvin, J., Rius, A. T., and Ruellet, T.: Recent expansion of two invasive crabs
species Hemigrapsus sanguineus (de Haan, 1835) and H. takanoi Asakura and Watanabe 2005 along the
Opal Coast, France, https://doi.org/10.3391/AI.2009.4.3.3, 2009.
Dauvin, J.-C.: Are the eastern and western basins of the English Channel two
separate ecosystems?, Mar. Pollut. Bull., 64, 463–471,
https://doi.org/10.1016/j.marpolbul.2011.12.010, 2012.
Dauvin, J.-C.: History of benthic research in the English Channel: From
general patterns of communities to habitat mosaic description, J.
Sea Res., 100, 32–45, https://doi.org/10.1016/j.seares.2014.11.005,
2015.
Dupont, L., Jollivet, D., and Viard, F.: High genetic diversity and ephemeral
drift effects in a successful introduced mollusc (Crepidula fornicata: Gastropoda), Mar.
Ecol.-Prog. Ser., 253, 183–195, https://doi.org/10.3354/meps253183,
2003.
Dupont, L., Ellien, C., and Viard, F.: Limits to gene flow in the slipper
limpet Crepidula fornicata as revealed by microsatellite data and a larval dispersal model,
Mar. Ecol.-Prog. Ser., 349, 125–138,
https://doi.org/10.3354/meps07098, 2007.
Ellien, C., Thiebaut, É., Barnay, A.-S., Dauvin, J.-C., Gentil, F., and
Salomon, J.-C.: The influence of variability in larval dispersal on the
dynamics of a marine metapopulation in the eastern Channel, Oceanol.
Acta, 23, 423–442, https://doi.org/10.1016/S0399-1784(00)00136-5, 2000.
Fouet, M., Heliot, S., Singer, D., Barras, C., and Jorissen, F. J.: How to adapt foraminiferal index to estuaries? Application of the MII index, in preparation, 2021.
Geslin, E., Barras, C., Langlet, D., Nardelli, M. P., Kim, J.-H., Bonnin,
J., Metzger, E., and Jorissen, F. J.: Survival, Reproduction and
Calcification of Three Benthic Foraminiferal Species in Response to
Experimentally Induced Hypoxia, in: Approaches to Study Living Foraminifera:
Collection, Maintenance and Experimentation, edited by: Kitazato, H. and
Bernhard, J. M., 163–193, Springer Japan, Tokyo,
https://doi.org/10.1007/978-4-431-54388-6_10, 2014.
Gothland, M., Dauvin, J. C., Denis, L., Dufossé, F., Jobert, S., Ovaert,
J., Pezy, J. P., Tous Rius, A., and Spilmont, N.: Biological traits explain
the distribution and colonisation ability of the invasive shore crab
Hemigrapsus takanoi, Estuar. Coast. Shelf S., 142, 41–49,
https://doi.org/10.1016/j.ecss.2014.03.012, 2014.
Gustafsson, M. and Nordberg, K.: Benthic foraminifera and their response to
hydrography, periodic hypoxic conditions and primary production in the
Koljö fjord on the Swedish west coast, J. Sea Res., 41,
163–178, https://doi.org/10.1016/S1385-1101(99)00002-7, 1999.
Hayward, B. W., Holzmann, M., Grenfell, H. R., Pawlowski, J., and Triggs, C.
M.: Morphological distinction of molecular types in Ammonia – towards a taxonomic
revision of the world's most commonly misidentified foraminifera, Mar.
Micropaleontol., 50, 237–271,
https://doi.org/10.1016/S0377-8398(03)00074-4, 2004.
Hayward, B. W., Holzmann, M., and Tsuchiya, M.: Combined Molecular and
Morphological Taxonomy of the Beccarii/T3 Group of the Foraminiferal Genus
Ammonia, J. Foramin. Res., 49, 367–389,
https://doi.org/10.2113/gsjfr.49.4.367, 2019.
Hemleben, C., Spindler, M., and Anderson, O. R.: Modern Planktonic
Foraminifera, Springer-Verlag, New York, 363 pp., 1989.
Hermelin, J. O. R.: Distribution of Holocene benthic foraminifera in the
Baltic Sea, J. Foramin. Res., 17, 62–73,
https://doi.org/10.2113/gsjfr.17.1.62, 1987.
Holzmann, M.: Species Concept in Foraminifera: Ammonia as a Case Study,
Micropaleontology, 46, 21–37, 2000.
Holzmann, M. and Pawlowski, J.: Molecular, morphological and ecological
evidence for species recognition in Ammonia (Foraminifera), J.
Foramin. Res., 27, 311–318,
https://doi.org/10.2113/gsjfr.27.4.311, 1997.
Holzmann, M. and Pawlowski, J.: Taxonomic relationships in the genus
Ammonia (Foraminifera) based on ribosomal DNA sequences, J.
Micropalaeontol., 19, 85–95, https://doi.org/10.1144/jm.19.1.85, 2000.
Holzmann, M., Piller, W., and Pawlowski, J.: Sequence variations in the
large-subunit ribosomal RNA gene of Ammonia (Foraminifera, Protozoa) and their
evolutionary implications, J. Mol. Evol., 43, 145–151,
https://doi.org/10.1007/BF02337359, 1996.
Horton, B. P. and Murray, J. W.: The roles of elevation and salinity as
primary controls on living foraminiferal distributions: Cowpen Marsh, Tees
Estuary, UK, Mar. Micropaleontol., 63, 169–186,
https://doi.org/10.1016/j.marmicro.2006.11.006, 2007.
Jones, R. W.: Foraminifera and their Applications, Cambridge University
Press, New York, 391 pp., 2014.
Katz, M. E., Cramer, B. S., Franzese, A., Hönisch, B., Miller, K. G.,
Rosenthal, Y., and Wright, J. D.: Traditional and emerging geochemical
proxies in foraminifera, J. Foramin. Res., 40, 165–192,
https://doi.org/10.2113/gsjfr.40.2.165, 2010.
Korsun, S. and Hald, M.: Seasonal dynamics of benthic foraminifera in a
glacially fed fjord of Svalbard, European Arctic, J. Foramin.
Res., 30, 251–271, https://doi.org/10.2113/0300251, 2000.
Kuhnt, T., Howa, H., Schmidt, S., Marié, L., and Schiebel, R.: Flux
dynamics of planktic foraminiferal tests in the south-eastern Bay of Biscay
(northeast Atlantic margin), J. Marine Syst., 109–110,
S169–S181, https://doi.org/10.1016/j.jmarsys.2011.11.026, 2013.
Langer, M. and Leppig, U.: Molecular phylogenetic status of Ammonia catesbyana (D'Orbigny,
1839), an intertidal foraminifer from the North Sea, Neues Jahrb.
Geol. P. M., 9, 545–556,
https://doi.org/10.1127/njgpm/2000/2000/545, 2000.
Larsonneur, C., Bouysse, P., and Auffret, J.-P.: The superficial sediments of
the English Channel and its Western Approaches, Sedimentology, 29,
851–864, https://doi.org/10.1111/j.1365-3091.1982.tb00088.x, 1982.
Lefebvre, A., Ellien, C., Davoult, D., Thiébaut, E., and Salomon, J. C.:
Pelagic dispersal of the brittle-star Ophiothrix fragilis larvae in a megatidal area (English
Channel, France) examined using an advection/diffusion model, Estuar.
Coast. Shelf S., 57, 421–433,
https://doi.org/10.1016/S0272-7714(02)00371-2, 2003.
Lutze, G. F.: Jahresgang der Foraminiferen-Fauna in der Bottsand-Lagune
(westliche Ostsee), MEYNIANA, 18, 13–20,
https://doi.org/10.2312/meyniana.1968.18.13, 1968.
Morard, R., Vollmar, N. M., Greco, M., and Kucera, M.: Unassigned diversity
of planktonic foraminifera from environmental sequencing revealed as known
but neglected species, PLOS ONE, 14, e0213936,
https://doi.org/10.1371/journal.pone.0213936, 2019.
Morvan, J., Debenay, J.-P., Jorissen, F., Redois, F., Bénéteau, E.,
Delplancke, M., and Amato, A.-S.: Patchiness and life cycle of intertidal
foraminifera: Implication for environmental and paleoenvironmental
interpretation, Mar. Micropaleontol., 61, 131–154,
https://doi.org/10.1016/j.marmicro.2006.05.009, 2006.
Murray, J. W.: Population dynamics of benthic foraminifera; results from the
Exe Estuary, England, J. Foramin. Res., 13, 1–12,
https://doi.org/10.2113/gsjfr.13.1.1, 1983.
Murray, J. W.: Distribution and population dynamics of benthic foraminifera
from the southern North Sea, J. Foramin. Res., 22,
114–128, https://doi.org/10.2113/gsjfr.22.2.114, 1992.
Murray, J. W.: Ecology and Applications of Benthic Foraminifera, Cambridge
University Press, Cambridge, 426 pp., 2006.
Murray, J. W. and Alve, E.: Major aspects of foraminiferal variability
(standing crop and biomass) on a monthly scale in an intertidal zone,
J. Foramin. Res., 30, 177–191,
https://doi.org/10.2113/0300177, 2000.
Papaspyrou, S., Diz, P., García-Robledo, E., Corzo, A., and
Jimenez-Arias, J.-L.: Benthic foraminiferal community changes and their
relationship to environmental dynamics in intertidal muddy sediments (Bay of
Cádiz, SW Spain), Mar. Ecol.-Prog. Ser., 490, 121–135,
https://doi.org/10.3354/meps10447, 2013.
Pawlowski, J. and Holzmann, M.: Diversity and geographic distribution of
benthic foraminifera: a molecular perspective, Biodivers. Conserv., 17,
317–328, https://doi.org/10.1007/s10531-007-9253-8, 2008.
Pawlowski, J., Bolivar, I., Farhni, J., and Zaninetti, L.: DNA analysis of
“Ammonia beccarii” morphotypes: one or more species?, Mar. Micropaleontol., 26,
171–178, https://doi.org/10.1016/0377-8398(95)00022-4, 1995.
Petersen, J., Riedel, B., Barras, C., Pays, O., Guihéneuf, A.,
Mabilleau, G., Schweizer, M., Meysman, F. J. R., and Jorissen, F. J.:
Improved methodology for measuring pore patterns in the benthic
foraminiferal genus Ammonia, Marine Micropaleontol., 128, 1–13,
https://doi.org/10.1016/j.marmicro.2016.08.001, 2016.
Polovodova, I., Nikulina, A., Schönfeld, J., and Dullo, W.-C.: Recent
benthic foraminifera in the Flensburg Fjord (Western Baltic Sea), J.
Micropalaeontol., 28, 131–142, https://doi.org/10.1144/jm.28.2.131,
2009.
Richirt, J., Schweizer, M., Bouchet, V. M. P., Mouret, A., Quinchard, S., and
Jorissen, F. J.: Morphological distinction of three Ammonia phylotypes occurring
along european coasts, J. Foramin. Res., 49, 77–94,
https://doi.org/10.2113/gsjfr.49.1.76, 2019a.
Richirt, J., Champmartin, S., Schweizer, M., Mouret, A., Petersen, J.,
Ambari, A., and Jorissen, F. J.: Scaling laws explain foraminiferal pore
patterns, Sci. Rep.-UK, 9, 9149,
https://doi.org/10.1038/s41598-019-45617-x, 2019b.
Richirt, J., Riedel, B., Mouret, A., Schweizer, M., Langlet, D., Seitaj, D., Meysman, F. J. R., Slomp, C. P., and Jorissen, F. J.: Foraminiferal community response to seasonal anoxia in Lake Grevelingen (the Netherlands), Biogeosciences, 17, 1415–1435, https://doi.org/10.5194/bg-17-1415-2020, 2020.
Saad,
S. A. and Wade, C. M.: Biogeographic distribution and habitat association of
Ammonia genetic variants around the coastline of Great Britain, Mar.
Micropaleontol., 124, 54–62,
https://doi.org/10.1016/j.marmicro.2016.01.004, 2016.
Saad, S. A. and Wade, C. M.: Seasonal and Spatial Variations of Saltmarsh
Benthic Foraminiferal Communities from North Norfolk, England, Microb. Ecol.,
73, 539–555, https://doi.org/10.1007/s00248-016-0895-5, 2017.
Salomon, J.-C. and Breton, M.: An atlas of long-term currents in the
channel, Oceanol. Acta, 16, 439–448, 1993.
Schönfeld, J., Alve, E., Geslin, E., Jorissen, F., Korsun, S., and
Spezzaferri, S.: The FOBIMO (FOraminiferal BIo-MOnitoring)
initiative – Towards a standardised protocol for soft-bottom benthic
foraminiferal monitoring studies, Mar. Micropaleontol., 94–95, 1–13,
https://doi.org/10.1016/j.marmicro.2012.06.001, 2012.
Schweizer, M., Jorissen, F., and Geslin, E.: Contributions of molecular
phylogenetics to foraminiferal taxonomy: General overview and example of
Pseudoeponides falsobeccarii Rouvillois, 1974, C. R. Palevol., 10, 95–105,
https://doi.org/10.1016/j.crpv.2011.01.003, 2011a.
Schweizer, M., Polovodova, I., Nikulina, A., and Schönfeld, J.: Molecular
identification of Ammonia and Elphidium species (Foraminifera, Rotaliida) from the Kiel Fjord
(SW Baltic Sea) with rDNA sequences, Helgoland Mar. Res., 65, 1–10,
https://doi.org/10.1007/s10152-010-0194-3, 2011b.
Schweizer, M., Richirt, J., Quinchard, S., Jauffrais, T., Laenger, A., Garnier, J., Saur, H., Toyofuku, T., Pawlowski, J., Jorissen, F. J.: Distribution of intertidal Ammonia phylotypes (Foraminifera, Rhizaria) along the European coasts and beyond, in preparation, 2021.
Sen Gupta, B. K.: Introduction to modern Foraminifera, in: Modern Foraminifera, edited by: Sen Gupta, B. K., Kluwer Academic Publisher, Dordrecht, 3–6, 2003.
Wefer, G.: Umwelt, Produktion und Sedimentation benthischer Foraminiferen in
der westlichen Ostsee, PhD thesis, University of Kiel, Germany, 1976.
Weiner, A. K. M., Morard, R., Weinkauf, M. F. G., Darling, K. F., André,
A., Quillévéré, F., Ujiie, Y., Douady, C. J., de Vargas, C., and
Kucera, M.: Methodology for Single-Cell Genetic Analysis of Planktonic
Foraminifera for Studies of Protist Diversity and Evolution, Front. Mar.
Sci., 3, 255, https://doi.org/10.3389/fmars.2016.00255, 2016.
Wolff, W. J. and Reise, K.: Oyster Imports as a Vector for the Introduction
of Alien Species into Northern and Western European Coastal Waters, in:
Invasive Aquatic Species of Europe. Distribution, Impacts and Management,
edited by: Leppäkoski, E., Gollasch, S., and Olenin, S., 193–205,
Springer Netherlands, Dordrecht,
https://doi.org/10.1007/978-94-015-9956-6_21, 2002.
Short summary
The study presents (1) a validation of a method which was previously published allowing us to recognize different Ammonia phylotypes (T1, T2 and T6) based only on their morphology and (2) a refined biogeographical distribution presented here supporting the putatively invasive character of phylotype T6. Results suggest that phylotype T6 is currently spreading out and supplanting autochthonous phylotypes T1 and T2 along the coastlines of the British Isles and northern France.
The study presents (1) a validation of a method which was previously published allowing us to...
