Articles | Volume 37, issue 2
https://doi.org/10.5194/jm-37-431-2018
© Author(s) 2018. 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-37-431-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
25 Sep 2018
Research article |
| 25 Sep 2018
| 25 Sep 2018
Factors affecting consistency and accuracy in identifying modern macroperforate planktonic foraminifera
Isabel S. Fenton
CORRESPONDING AUTHOR
Department of Life Sciences, Natural History Museum, London, SW7 5BD,
UK
Ulrike Baranowski
School of Geography, Earth and Environmental Sciences, University of
Birmingham, Birmingham, B15 2TT, UK
Flavia Boscolo-Galazzo
School of Earth and Ocean Sciences, Cardiff University, Cardiff, CF10
3AT, UK
Hannah Cheales
Department of Life Sciences, Natural History Museum, London, SW7 5BD,
UK
Department of Genetics, Evolution and Environment, University College
London, London, WC1E 6BT, UK
Lyndsey Fox
Department of Earth Sciences, Natural History Museum, London, SW7 5BD,
UK
David J. King
Department of Earth Sciences, Natural History Museum, London, SW7 5BD,
UK
Department of Earth Sciences, University College London, London, WC1E
6BT, UK
Christina Larkin
Department of Earth Sciences, University of Cambridge, Cambridge, CB2
3EQ, UK
Marcin Latas
Department of Life Sciences, Natural History Museum, London, SW7 5BD,
UK
Department of Earth Sciences, University College London, London, WC1E
6BT, UK
Diederik Liebrand
MARUM – Center for Marine Environmental Sciences, University of Bremen,
Bremen, 28359, Germany
C. Giles Miller
Department of Earth Sciences, Natural History Museum, London, SW7 5BD,
UK
Katrina Nilsson-Kerr
School of Environment, Earth and Ecosystem Sciences, The Open
University, Milton Keynes, MK7 6AA, UK
Emanuela Piga
School of Earth and Ocean Sciences, Cardiff University, Cardiff, CF10
3AT, UK
Department of Earth Sciences, Natural History Museum, London, SW7 5BD,
UK
Hazel Pugh
Department of Life Sciences, Natural History Museum, London, SW7 5BD,
UK
Department of Life Sciences, Imperial College London, Silwood Park
Campus, Ascot, SL5 7PY, UK
Serginio Remmelzwaal
School of Earth Sciences, University of Bristol, Bristol, BS8 1RJ, UK
Zoe A. Roseby
National Oceanography Centre Southampton, University of Southampton,
Southampton, SO17 1BJ, UK
Yvonne M. Smith
School of Earth and Environment, University of Leeds, Leeds, LS2 9JT,
UK
Stephen Stukins
Department of Earth Sciences, Natural History Museum, London, SW7 5BD,
UK
Ben Taylor
School of Earth and Environmental Sciences, University of St Andrews,
St Andrews, KY16 9AL, UK
Adam Woodhouse
School of Earth and Environment, University of Leeds, Leeds, LS2 9JT,
UK
Savannah Worne
School of Geography, University of Nottingham, Nottingham, NG7 2RD,
UK
Paul N. Pearson
School of Earth and Ocean Sciences, Cardiff University, Cardiff, CF10
3AT, UK
Christopher R. Poole
Department of Earth Sciences, University College London, London, WC1E
6BT, UK
Bridget S. Wade
Department of Earth Sciences, University College London, London, WC1E
6BT, UK
Andy Purvis
Department of Life Sciences, Natural History Museum, London, SW7 5BD,
UK
Department of Life Sciences, Imperial College London, Silwood Park
Campus, Ascot, SL5 7PY, UK
Related authors
Nadia Al-Sabouni, Isabel S. Fenton, Richard J. Telford, and Michal Kučera
J. Micropalaeontol., 37, 519–534, https://doi.org/10.5194/jm-37-519-2018, https://doi.org/10.5194/jm-37-519-2018, 2018
Short summary
Short summary
In this study we investigate consistency in species-level identifications and whether disagreements are predictable. Overall, 21 researchers from across the globe identified sets of 300 specimens or digital images of planktonic foraminifera. Digital identifications tended to be more disparate. Participants trained by the same person often had more similar identifications. Disagreements hardly affected transfer-function temperature estimates but produced larger differences in diversity metrics.
Flavia Boscolo-Galazzo, David Evans, Elaine Mawbey, William Gray, Paul Pearson, and Bridget Wade
EGUsphere, https://doi.org/10.5194/egusphere-2024-1608, https://doi.org/10.5194/egusphere-2024-1608, 2024
Short summary
Short summary
Here we present a comparison of results from the Mg/Ca and oxygen stable isotopes paleothermometers obtained from 57 modern to fossil species of planktonic foraminifera from the last 15 million of years. We find that the occurrence (or not) of species-species offsets in Mg/Ca is conservative between ancestor-descendent species, and that taking into account species kinship can significantly improve temperature reconstructions by several degrees.
Alessio Fabbrini, Maria Rose Petrizzo, Isabella Premoli Silva, Luca M. Foresi, and Bridget S. Wade
J. Micropalaeontol., 43, 121–138, https://doi.org/10.5194/jm-43-121-2024, https://doi.org/10.5194/jm-43-121-2024, 2024
Short summary
Short summary
We report on the rediscovery of Globigerina bollii, a planktonic foraminifer described by Cita and Premoli Silva (1960) in the Mediterranean Basin. We redescribe G. bollii as a valid species belonging to the genus Globoturborotalita. We report and summarise all the recordings of the taxon in the scientific literature. Then we discuss how the taxon might be a palaeogeographical indicator of the intermittent gateways between the Mediterranean Sea, Paratethys, and Indian Ocean.
Paul N. Pearson, Jeremy Young, David J. King, and Bridget S. Wade
J. Micropalaeontol., 42, 211–255, https://doi.org/10.5194/jm-42-211-2023, https://doi.org/10.5194/jm-42-211-2023, 2023
Short summary
Short summary
Planktonic foraminifera are marine plankton that have a long and continuous fossil record. They are used for correlating and dating ocean sediments and studying evolution and past climates. This paper presents new information about Pulleniatina, one of the most widespread and abundant groups, from an important site in the Pacific Ocean. It also brings together a very large amount of information on the fossil record from other sites globally.
Marcin Latas, Paul N. Pearson, Christopher R. Poole, Alessio Fabbrini, and Bridget S. Wade
J. Micropalaeontol., 42, 57–81, https://doi.org/10.5194/jm-42-57-2023, https://doi.org/10.5194/jm-42-57-2023, 2023
Short summary
Short summary
Planktonic foraminifera are microscopic single-celled organisms populating world oceans. They have one of the most complete fossil records; thanks to their great abundance, they are widely used to study past marine environments. We analysed and measured series of foraminifera shells from Indo-Pacific sites, which led to the description of a new species of fossil planktonic foraminifera. Part of its population exhibits pink pigmentation, which is only the third such case among known species.
Adam Woodhouse, Frances A. Procter, Sophie L. Jackson, Robert A. Jamieson, Robert J. Newton, Philip F. Sexton, and Tracy Aze
Biogeosciences, 20, 121–139, https://doi.org/10.5194/bg-20-121-2023, https://doi.org/10.5194/bg-20-121-2023, 2023
Short summary
Short summary
This study looked into the regional and global response of planktonic foraminifera to the climate over the last 5 million years, when the Earth cooled significantly. These single celled organisms exhibit the best fossil record available to science. We document an abundance switch from warm water to cold water species as the Earth cooled. Moreover, a closer analysis of certain species may indicate higher fossil diversity than previously thought, which has implications for evolutionary studies.
Paul N. Pearson, Eleanor John, Bridget S. Wade, Simon D'haenens, and Caroline H. Lear
J. Micropalaeontol., 41, 107–127, https://doi.org/10.5194/jm-41-107-2022, https://doi.org/10.5194/jm-41-107-2022, 2022
Short summary
Short summary
The microscopic shells of planktonic foraminifera accumulate on the sea floor over millions of years, providing a rich archive for understanding the history of the oceans. We examined an extinct group that flourished between about 63 and 32 million years ago using scanning electron microscopy and show that they were covered with needle-like spines in life. This has implications for analytical methods that we use to determine past seawater temperature and acidity.
Flavia Boscolo-Galazzo, Amy Jones, Tom Dunkley Jones, Katherine A. Crichton, Bridget S. Wade, and Paul N. Pearson
Biogeosciences, 19, 743–762, https://doi.org/10.5194/bg-19-743-2022, https://doi.org/10.5194/bg-19-743-2022, 2022
Short summary
Short summary
Deep-living organisms are a major yet poorly known component of ocean biomass. Here we reconstruct the evolution of deep-living zooplankton and phytoplankton. Deep-dwelling zooplankton and phytoplankton did not occur 15 Myr ago, when the ocean was several degrees warmer than today. Deep-dwelling species first evolve around 7.5 Myr ago, following global climate cooling. Their evolution was driven by colder ocean temperatures allowing more food, oxygen, and light at depth.
Katherine A. Crichton, Andy Ridgwell, Daniel J. Lunt, Alex Farnsworth, and Paul N. Pearson
Clim. Past, 17, 2223–2254, https://doi.org/10.5194/cp-17-2223-2021, https://doi.org/10.5194/cp-17-2223-2021, 2021
Short summary
Short summary
The middle Miocene (15 Ma) was a period of global warmth up to 8 °C warmer than present. We investigate changes in ocean circulation and heat distribution since the middle Miocene and the cooling to the present using the cGENIE Earth system model. We create seven time slices at ~2.5 Myr intervals, constrained with paleo-proxy data, showing a progressive reduction in atmospheric CO2 and a strengthening of the Atlantic Meridional Overturning Circulation.
Jakub Witkowski, Karolina Bryłka, Steven M. Bohaty, Elżbieta Mydłowska, Donald E. Penman, and Bridget S. Wade
Clim. Past, 17, 1937–1954, https://doi.org/10.5194/cp-17-1937-2021, https://doi.org/10.5194/cp-17-1937-2021, 2021
Short summary
Short summary
We reconstruct the history of biogenic opal accumulation through the early to middle Paleogene in the western North Atlantic. Biogenic opal accumulation was controlled by deepwater temperatures, atmospheric greenhouse gas levels, and continental weathering intensity. Overturning circulation in the Atlantic was established at the end of the extreme early Eocene greenhouse warmth period. We also show that the strength of the link between climate and continental weathering varies through time.
Bridget S. Wade, Mohammed H. Aljahdali, Yahya A. Mufrreh, Abdullah M. Memesh, Salih A. AlSoubhi, and Iyad S. Zalmout
J. Micropalaeontol., 40, 145–161, https://doi.org/10.5194/jm-40-145-2021, https://doi.org/10.5194/jm-40-145-2021, 2021
Short summary
Short summary
We examined the planktonic foraminifera (calcareous zooplankton) from a section in northern Saudi Arabia. We found the assemblages to be diverse, well-preserved and of late Eocene age. Our study provides new insights into the stratigraphic ranges of many species and indicates that the late Eocene had a higher tropical/subtropical diversity of planktonic foraminifera than previously reported.
David K. Hutchinson, Helen K. Coxall, Daniel J. Lunt, Margret Steinthorsdottir, Agatha M. de Boer, Michiel Baatsen, Anna von der Heydt, Matthew Huber, Alan T. Kennedy-Asser, Lutz Kunzmann, Jean-Baptiste Ladant, Caroline H. Lear, Karolin Moraweck, Paul N. Pearson, Emanuela Piga, Matthew J. Pound, Ulrich Salzmann, Howie D. Scher, Willem P. Sijp, Kasia K. Śliwińska, Paul A. Wilson, and Zhongshi Zhang
Clim. Past, 17, 269–315, https://doi.org/10.5194/cp-17-269-2021, https://doi.org/10.5194/cp-17-269-2021, 2021
Short summary
Short summary
The Eocene–Oligocene transition was a major climate cooling event from a largely ice-free world to the first major glaciation of Antarctica, approximately 34 million years ago. This paper reviews observed changes in temperature, CO2 and ice sheets from marine and land-based records at this time. We present a new model–data comparison of this transition and find that CO2-forced cooling provides the best explanation of the observed global temperature changes.
Katherine A. Crichton, Jamie D. Wilson, Andy Ridgwell, and Paul N. Pearson
Geosci. Model Dev., 14, 125–149, https://doi.org/10.5194/gmd-14-125-2021, https://doi.org/10.5194/gmd-14-125-2021, 2021
Short summary
Short summary
Temperature is a controller of metabolic processes and therefore also a controller of the ocean's biological carbon pump (BCP). We calibrate a temperature-dependent version of the BCP in the cGENIE Earth system model. Since the pre-industrial period, warming has intensified near-surface nutrient recycling, supporting production and largely offsetting stratification-induced surface nutrient limitation. But at the same time less carbon that sinks out of the surface then reaches the deep ocean.
Kirsty M. Edgar, Steven M. Bohaty, Helen K. Coxall, Paul R. Bown, Sietske J. Batenburg, Caroline H. Lear, and Paul N. Pearson
J. Micropalaeontol., 39, 117–138, https://doi.org/10.5194/jm-39-117-2020, https://doi.org/10.5194/jm-39-117-2020, 2020
Short summary
Short summary
We identify the first continuous carbonate-bearing sediment record from the tropical ocean that spans the entirety of the global warming event, the Middle Eocene Climatic Optimum, ca. 40 Ma. We determine significant mismatches between middle Eocene calcareous microfossil datums from the tropical Pacific Ocean and established low-latitude zonation schemes. We highlight the potential of ODP Site 865 for future investigations into environmental and biotic changes throughout the early Paleogene.
Christopher J. Hollis, Tom Dunkley Jones, Eleni Anagnostou, Peter K. Bijl, Marlow Julius Cramwinckel, Ying Cui, Gerald R. Dickens, Kirsty M. Edgar, Yvette Eley, David Evans, Gavin L. Foster, Joost Frieling, Gordon N. Inglis, Elizabeth M. Kennedy, Reinhard Kozdon, Vittoria Lauretano, Caroline H. Lear, Kate Littler, Lucas Lourens, A. Nele Meckler, B. David A. Naafs, Heiko Pälike, Richard D. Pancost, Paul N. Pearson, Ursula Röhl, Dana L. Royer, Ulrich Salzmann, Brian A. Schubert, Hannu Seebeck, Appy Sluijs, Robert P. Speijer, Peter Stassen, Jessica Tierney, Aradhna Tripati, Bridget Wade, Thomas Westerhold, Caitlyn Witkowski, James C. Zachos, Yi Ge Zhang, Matthew Huber, and Daniel J. Lunt
Geosci. Model Dev., 12, 3149–3206, https://doi.org/10.5194/gmd-12-3149-2019, https://doi.org/10.5194/gmd-12-3149-2019, 2019
Short summary
Short summary
The Deep-Time Model Intercomparison Project (DeepMIP) is a model–data intercomparison of the early Eocene (around 55 million years ago), the last time that Earth's atmospheric CO2 concentrations exceeded 1000 ppm. Previously, we outlined the experimental design for climate model simulations. Here, we outline the methods used for compilation and analysis of climate proxy data. The resulting climate
atlaswill provide insights into the mechanisms that control past warm climate states.
Robert D. Larter, Kelly A. Hogan, Claus-Dieter Hillenbrand, James A. Smith, Christine L. Batchelor, Matthieu Cartigny, Alex J. Tate, James D. Kirkham, Zoë A. Roseby, Gerhard Kuhn, Alastair G. C. Graham, and Julian A. Dowdeswell
The Cryosphere, 13, 1583–1596, https://doi.org/10.5194/tc-13-1583-2019, https://doi.org/10.5194/tc-13-1583-2019, 2019
Short summary
Short summary
We present high-resolution bathymetry data that provide the most complete and detailed imagery of any Antarctic palaeo-ice stream bed. These data show how subglacial water was delivered to and influenced the dynamic behaviour of the ice stream. Our observations provide insights relevant to understanding the behaviour of modern ice streams and forecasting the contributions that they will make to future sea level rise.
Nadia Al-Sabouni, Isabel S. Fenton, Richard J. Telford, and Michal Kučera
J. Micropalaeontol., 37, 519–534, https://doi.org/10.5194/jm-37-519-2018, https://doi.org/10.5194/jm-37-519-2018, 2018
Short summary
Short summary
In this study we investigate consistency in species-level identifications and whether disagreements are predictable. Overall, 21 researchers from across the globe identified sets of 300 specimens or digital images of planktonic foraminifera. Digital identifications tended to be more disparate. Participants trained by the same person often had more similar identifications. Disagreements hardly affected transfer-function temperature estimates but produced larger differences in diversity metrics.
HyeJin Kim, Isabel M. D. Rosa, Rob Alkemade, Paul Leadley, George Hurtt, Alexander Popp, Detlef P. van Vuuren, Peter Anthoni, Almut Arneth, Daniele Baisero, Emma Caton, Rebecca Chaplin-Kramer, Louise Chini, Adriana De Palma, Fulvio Di Fulvio, Moreno Di Marco, Felipe Espinoza, Simon Ferrier, Shinichiro Fujimori, Ricardo E. Gonzalez, Maya Gueguen, Carlos Guerra, Mike Harfoot, Thomas D. Harwood, Tomoko Hasegawa, Vanessa Haverd, Petr Havlík, Stefanie Hellweg, Samantha L. L. Hill, Akiko Hirata, Andrew J. Hoskins, Jan H. Janse, Walter Jetz, Justin A. Johnson, Andreas Krause, David Leclère, Ines S. Martins, Tetsuya Matsui, Cory Merow, Michael Obersteiner, Haruka Ohashi, Benjamin Poulter, Andy Purvis, Benjamin Quesada, Carlo Rondinini, Aafke M. Schipper, Richard Sharp, Kiyoshi Takahashi, Wilfried Thuiller, Nicolas Titeux, Piero Visconti, Christopher Ware, Florian Wolf, and Henrique M. Pereira
Geosci. Model Dev., 11, 4537–4562, https://doi.org/10.5194/gmd-11-4537-2018, https://doi.org/10.5194/gmd-11-4537-2018, 2018
Short summary
Short summary
This paper lays out the protocol for the Biodiversity and Ecosystem Services Scenario-based Intercomparison of Models (BES-SIM) that projects the global impacts of land use and climate change on biodiversity and ecosystem services over the coming decades, compared to the 20th century. BES-SIM uses harmonized scenarios and input data and a set of common output metrics at multiple scales, and identifies model uncertainties and research gaps.
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.
Helen M. Beddow, Diederik Liebrand, Douglas S. Wilson, Frits J. Hilgen, Appy Sluijs, Bridget S. Wade, and Lucas J. Lourens
Clim. Past, 14, 255–270, https://doi.org/10.5194/cp-14-255-2018, https://doi.org/10.5194/cp-14-255-2018, 2018
Short summary
Short summary
We present two astronomy-based timescales for climate records from the Pacific Ocean. These records range from 24 to 22 million years ago, a time period when Earth was warmer than today and the only land ice was located on Antarctica. We use tectonic plate-pair spreading rates to test the two timescales, which shows that the carbonate record yields the best timescale. In turn, this implies that Earth’s climate system and carbon cycle responded slowly to changes in incoming solar radiation.
Paul N. Pearson and IODP Expedition 363 Shipboard Scientific
Party
J. Micropalaeontol., 37, 97–104, https://doi.org/10.5194/jm-37-97-2018, https://doi.org/10.5194/jm-37-97-2018, 2018
Short summary
Short summary
We describe an unusual millimetre-long tube that was discovered in sediment from the deep sea floor. The tube was made by a single-celled organism by cementing together sedimentary grains from its environment. The specimen is unusual because it implies that the organism used a very high degree of discrimination in selecting its grains, as they are all of one type and most are oriented the same way. It raises intriguing questions of how the organism accomplished this activity.
Lyndsey R. Fox, Stephen Stukins, Tom Hill, and Haydon Bailey
J. Micropalaeontol., 37, 11–16, https://doi.org/10.5194/jm-37-11-2018, https://doi.org/10.5194/jm-37-11-2018, 2018
Short summary
Short summary
This paper describes four new Cenozoic, deep-water benthic foraminifera from the reference collections at the Natural History Museum in London. The focus is on selected calcareous taxa that are of stratigraphical and/or palaeoecological significance for academic and industrial-related activities.
Daniel J. Lunt, Matthew Huber, Eleni Anagnostou, Michiel L. J. Baatsen, Rodrigo Caballero, Rob DeConto, Henk A. Dijkstra, Yannick Donnadieu, David Evans, Ran Feng, Gavin L. Foster, Ed Gasson, Anna S. von der Heydt, Chris J. Hollis, Gordon N. Inglis, Stephen M. Jones, Jeff Kiehl, Sandy Kirtland Turner, Robert L. Korty, Reinhardt Kozdon, Srinath Krishnan, Jean-Baptiste Ladant, Petra Langebroek, Caroline H. Lear, Allegra N. LeGrande, Kate Littler, Paul Markwick, Bette Otto-Bliesner, Paul Pearson, Christopher J. Poulsen, Ulrich Salzmann, Christine Shields, Kathryn Snell, Michael Stärz, James Super, Clay Tabor, Jessica E. Tierney, Gregory J. L. Tourte, Aradhna Tripati, Garland R. Upchurch, Bridget S. Wade, Scott L. Wing, Arne M. E. Winguth, Nicky M. Wright, James C. Zachos, and Richard E. Zeebe
Geosci. Model Dev., 10, 889–901, https://doi.org/10.5194/gmd-10-889-2017, https://doi.org/10.5194/gmd-10-889-2017, 2017
Short summary
Short summary
In this paper we describe the experimental design for a set of simulations which will be carried out by a range of climate models, all investigating the climate of the Eocene, about 50 million years ago. The intercomparison of model results is called 'DeepMIP', and we anticipate that we will contribute to the next IPCC report through an analysis of these simulations and the geological data to which we will compare them.
Marina C. Rillo, John Whittaker, Thomas H. G. Ezard, Andy Purvis, Andrew S. Henderson, Stephen Stukins, and C. Giles Miller
J. Micropalaeontol., 36, 191–194, https://doi.org/10.1144/jmpaleo2016-020, https://doi.org/10.1144/jmpaleo2016-020, 2016
David Evans, Bridget S. Wade, Michael Henehan, Jonathan Erez, and Wolfgang Müller
Clim. Past, 12, 819–835, https://doi.org/10.5194/cp-12-819-2016, https://doi.org/10.5194/cp-12-819-2016, 2016
Short summary
Short summary
We show that seawater pH exerts a substantial control on planktic foraminifera Mg / Ca, a widely applied palaeothermometer. As a result, temperature reconstructions based on this proxy are likely inaccurate over climatic events associated with a significant change in pH. We examine the implications of our findings for hydrological and temperature shifts over the Paleocene-Eocene Thermal Maximum and for the degree of surface ocean precursor cooling before the Eocene-Oligocene transition.
P. N. Pearson and E. Thomas
Clim. Past, 11, 95–104, https://doi.org/10.5194/cp-11-95-2015, https://doi.org/10.5194/cp-11-95-2015, 2015
Short summary
Short summary
The Paleocene-to-Eocene thermal maximum was a period of extreme global warming caused by perturbation to the global carbon cycle 56Mya. Evidence from marine sediment cores has been used to suggest that the onset of the event was very rapid, over just 11 years of annually resolved sedimentation. However, we argue that the supposed annual layers are an artifact caused by drilling disturbance, and that the microfossil content of the cores shows the onset took in the order of thousands of years.
Paul N. Pearson, Sam L. Evans, and James Evans
J. Micropalaeontol., 34, 59–64, https://doi.org/10.1144/jmpaleo2013-032, https://doi.org/10.1144/jmpaleo2013-032, 2015
P. N. Pearson and W. Hudson
Sci. Dril., 18, 13–17, https://doi.org/10.5194/sd-18-13-2014, https://doi.org/10.5194/sd-18-13-2014, 2014
Related subject area
Planktic foraminifera
Pliocene–Pleistocene warm-water incursions and water mass changes on the Ross Sea continental shelf (Antarctica) based on foraminifera from IODP Expedition 374
Rediscovering Globigerina bollii Cita and Premoli Silva 1960
Biochronology and evolution of Pulleniatina (planktonic foraminifera)
Globigerinoides rublobatus – a new species of Pleistocene planktonic foraminifera
Analysing planktonic foraminiferal growth in three dimensions with foram3D: an R package for automated trait measurements from CT scans
Spine-like structures in Paleogene muricate planktonic foraminifera
Taxonomic review of living planktonic foraminifera
Upper Eocene planktonic foraminifera from northern Saudi Arabia: implications for stratigraphic ranges
Jurassic planktic foraminifera from the Polish Basin
Automated analysis of foraminifera fossil records by image classification using a convolutional neural network
Middle Jurassic (Bajocian) planktonic foraminifera from the northwest Australian margin
Ontogenetic disparity in early planktic foraminifers
Seasonal and interannual variability in population dynamics of planktic foraminifers off Puerto Rico (Caribbean Sea)
Calcification depth of deep-dwelling planktonic foraminifera from the eastern North Atlantic constrained by stable oxygen isotope ratios of shells from stratified plankton tows
Reproducibility of species recognition in modern planktonic foraminifera and its implications for analyses of community structure
Julia L. Seidenstein, R. Mark Leckie, Robert McKay, Laura De Santis, David Harwood, and IODP Expedition 374 Scientists
J. Micropalaeontol., 43, 211–238, https://doi.org/10.5194/jm-43-211-2024, https://doi.org/10.5194/jm-43-211-2024, 2024
Short summary
Short summary
Warmer waters in the Southern Ocean have led to the loss of Antarctic ice during past interglacial times. The shells of foraminifera are preserved in Ross Sea sediment, which is collected in cores. Benthic species from Site U1523 inform us about changing water masses and current activity, including incursions of Circumpolar Deep Water. Warm water planktic species were found in sediment samples from four intervals within 3.72–1.82 million years ago, indicating warmer than present conditions.
Alessio Fabbrini, Maria Rose Petrizzo, Isabella Premoli Silva, Luca M. Foresi, and Bridget S. Wade
J. Micropalaeontol., 43, 121–138, https://doi.org/10.5194/jm-43-121-2024, https://doi.org/10.5194/jm-43-121-2024, 2024
Short summary
Short summary
We report on the rediscovery of Globigerina bollii, a planktonic foraminifer described by Cita and Premoli Silva (1960) in the Mediterranean Basin. We redescribe G. bollii as a valid species belonging to the genus Globoturborotalita. We report and summarise all the recordings of the taxon in the scientific literature. Then we discuss how the taxon might be a palaeogeographical indicator of the intermittent gateways between the Mediterranean Sea, Paratethys, and Indian Ocean.
Paul N. Pearson, Jeremy Young, David J. King, and Bridget S. Wade
J. Micropalaeontol., 42, 211–255, https://doi.org/10.5194/jm-42-211-2023, https://doi.org/10.5194/jm-42-211-2023, 2023
Short summary
Short summary
Planktonic foraminifera are marine plankton that have a long and continuous fossil record. They are used for correlating and dating ocean sediments and studying evolution and past climates. This paper presents new information about Pulleniatina, one of the most widespread and abundant groups, from an important site in the Pacific Ocean. It also brings together a very large amount of information on the fossil record from other sites globally.
Marcin Latas, Paul N. Pearson, Christopher R. Poole, Alessio Fabbrini, and Bridget S. Wade
J. Micropalaeontol., 42, 57–81, https://doi.org/10.5194/jm-42-57-2023, https://doi.org/10.5194/jm-42-57-2023, 2023
Short summary
Short summary
Planktonic foraminifera are microscopic single-celled organisms populating world oceans. They have one of the most complete fossil records; thanks to their great abundance, they are widely used to study past marine environments. We analysed and measured series of foraminifera shells from Indo-Pacific sites, which led to the description of a new species of fossil planktonic foraminifera. Part of its population exhibits pink pigmentation, which is only the third such case among known species.
Anieke Brombacher, Alex Searle-Barnes, Wenshu Zhang, and Thomas H. G. Ezard
J. Micropalaeontol., 41, 149–164, https://doi.org/10.5194/jm-41-149-2022, https://doi.org/10.5194/jm-41-149-2022, 2022
Short summary
Short summary
Foraminifera are sand-grain-sized marine organisms that build spiral shells. When they die, the shells sink to the sea floor where they are preserved for millions of years. We wrote a software package that automatically analyses the fossil spirals to learn about evolution of new shapes in the geological past. With this software we will be able to analyse larger datasets than we currently can, which will improve our understanding of the evolution of new species.
Paul N. Pearson, Eleanor John, Bridget S. Wade, Simon D'haenens, and Caroline H. Lear
J. Micropalaeontol., 41, 107–127, https://doi.org/10.5194/jm-41-107-2022, https://doi.org/10.5194/jm-41-107-2022, 2022
Short summary
Short summary
The microscopic shells of planktonic foraminifera accumulate on the sea floor over millions of years, providing a rich archive for understanding the history of the oceans. We examined an extinct group that flourished between about 63 and 32 million years ago using scanning electron microscopy and show that they were covered with needle-like spines in life. This has implications for analytical methods that we use to determine past seawater temperature and acidity.
Geert-Jan A. Brummer and Michal Kučera
J. Micropalaeontol., 41, 29–74, https://doi.org/10.5194/jm-41-29-2022, https://doi.org/10.5194/jm-41-29-2022, 2022
Short summary
Short summary
To aid researchers working with living planktonic foraminifera, we provide a comprehensive review of names that we consider appropriate for extant species. We discuss the reasons for the decisions we made and provide a list of species and genus-level names as well as other names that have been used in the past but are considered inappropriate for living taxa, stating the reasons.
Bridget S. Wade, Mohammed H. Aljahdali, Yahya A. Mufrreh, Abdullah M. Memesh, Salih A. AlSoubhi, and Iyad S. Zalmout
J. Micropalaeontol., 40, 145–161, https://doi.org/10.5194/jm-40-145-2021, https://doi.org/10.5194/jm-40-145-2021, 2021
Short summary
Short summary
We examined the planktonic foraminifera (calcareous zooplankton) from a section in northern Saudi Arabia. We found the assemblages to be diverse, well-preserved and of late Eocene age. Our study provides new insights into the stratigraphic ranges of many species and indicates that the late Eocene had a higher tropical/subtropical diversity of planktonic foraminifera than previously reported.
Maria Gajewska, Zofia Dubicka, and Malcolm B. Hart
J. Micropalaeontol., 40, 1–13, https://doi.org/10.5194/jm-40-1-2021, https://doi.org/10.5194/jm-40-1-2021, 2021
Ross Marchant, Martin Tetard, Adnya Pratiwi, Michael Adebayo, and Thibault de Garidel-Thoron
J. Micropalaeontol., 39, 183–202, https://doi.org/10.5194/jm-39-183-2020, https://doi.org/10.5194/jm-39-183-2020, 2020
Short summary
Short summary
Foraminifera are marine microorganisms with a calcium carbonate shell. Their fossil remains build up on the seafloor, forming kilometres of sediment over time. From analysis of the foraminiferal record we can estimate past climate conditions and the geological history of the Earth. We have developed an artificial intelligence system for automatically identifying foraminifera species, replacing the time-consuming manual approach and thus helping to make these analyses more efficient and accurate.
Marjorie Apthorpe
J. Micropalaeontol., 39, 93–115, https://doi.org/10.5194/jm-39-93-2020, https://doi.org/10.5194/jm-39-93-2020, 2020
Short summary
Short summary
Three well-preserved new species of Middle Jurassic (Bajocian) planktonic foraminifera from the continental margin of northwest Australia are described. This is on the southern shelf of the Tethys Ocean, and these planktonics are the first to be reported from the Jurassic Southern Hemisphere. Described as new are Globuligerina bathoniana australiana n. ssp., G. altissapertura n. sp. and Mermaidogerina loopae n. gen. n. sp. The research is part of a study of regional Jurassic foraminifera.
Sophie Kendall, Felix Gradstein, Christopher Jones, Oliver T. Lord, and Daniela N. Schmidt
J. Micropalaeontol., 39, 27–39, https://doi.org/10.5194/jm-39-27-2020, https://doi.org/10.5194/jm-39-27-2020, 2020
Short summary
Short summary
Changes in morphology during development can have profound impacts on an organism but are hard to quantify as we lack preservation in the fossil record. As they grow by adding chambers, planktic foraminifera are an ideal group to study changes in growth in development. We analyse four different species of Jurassic foraminifers using a micro-CT scanner. The low morphological variability suggests that strong constraints, described in the modern ocean, were already acting on Jurassic specimens.
Anna Jentzen, Joachim Schönfeld, Agnes K. M. Weiner, Manuel F. G. Weinkauf, Dirk Nürnberg, and Michal Kučera
J. Micropalaeontol., 38, 231–247, https://doi.org/10.5194/jm-38-231-2019, https://doi.org/10.5194/jm-38-231-2019, 2019
Short summary
Short summary
The study assessed the population dynamics of living planktic foraminifers on a weekly, seasonal, and interannual timescale off the coast of Puerto Rico to improve our understanding of short- and long-term variations. The results indicate a seasonal change of the faunal composition, and over the last decades. Lower standing stocks and lower stable carbon isotope values of foraminifers in shallow waters can be linked to the hurricane Sandy, which passed the Greater Antilles during autumn 2012.
Andreia Rebotim, Antje Helga Luise Voelker, Lukas Jonkers, Joanna J. Waniek, Michael Schulz, and Michal Kucera
J. Micropalaeontol., 38, 113–131, https://doi.org/10.5194/jm-38-113-2019, https://doi.org/10.5194/jm-38-113-2019, 2019
Short summary
Short summary
To reconstruct subsurface water conditions using deep-dwelling planktonic foraminifera, we must fully understand how the oxygen isotope signal incorporates into their shell. We report δ18O in four species sampled in the eastern North Atlantic with plankton tows. We assess the size and crust effect on the isotopic δ18O and compared them with predictions from two equations. We reveal different patterns of calcite addition with depth, highlighting the need to perform species-specific calibrations.
Nadia Al-Sabouni, Isabel S. Fenton, Richard J. Telford, and Michal Kučera
J. Micropalaeontol., 37, 519–534, https://doi.org/10.5194/jm-37-519-2018, https://doi.org/10.5194/jm-37-519-2018, 2018
Short summary
Short summary
In this study we investigate consistency in species-level identifications and whether disagreements are predictable. Overall, 21 researchers from across the globe identified sets of 300 specimens or digital images of planktonic foraminifera. Digital identifications tended to be more disparate. Participants trained by the same person often had more similar identifications. Disagreements hardly affected transfer-function temperature estimates but produced larger differences in diversity metrics.
Cited articles
Al-Sabouni, N., Kučera, M., and Schmidt, D. N.: Vertical niche
separation control of diversity and size disparity in planktonic
foraminifera, Mar. Micropaleontol., 63, 75–90, https://doi.org/10.1016/j.marmicro.2006.11.002, 2007.
Al-Sabouni, N., Fenton, I. S., Telford, R. J., and Kučera, M.:
Reproducibility of species recognition in modern planktonic foraminifera and
its implications for analyses of community structure, J. Micropalaeontol., in
review, 2018.
André, A., Weiner, A., Quillévéré, F., Aurahs, R., Morard,
R., Douady, C. J., de Garidel-Thoron, T., Escarguel, G., de Vargas, C., and
Kučera, M.: The cryptic and the apparent reversed: Lack of genetic
differentiation within the morphologically diverse plexus of the planktonic
foraminifer Globigerinoides sacculifer, Paleobiology, 39, 21–39, https://doi.org/10.1666/0094-8373-39.1.21, 2013.
Aurahs, R., Treis, Y., Darling, K. F., and Kučera, M.: A revised
taxonomic and phylogenetic concept for the planktonic foraminifer species
Globigerinoides ruber based on molecular and morphometric evidence, Mar. Micropaleontol., 79,
1–14, https://doi.org/10.1016/j.marmicro.2010.12.001, 2011.
Aze, T., Ezard, T. H. G., Purvis, A., Coxall, H. K., Stewart, D. R. M.,
Wade, B. S., and Pearson, P. N.: A phylogeny of Cenozoic macroperforate
planktonic foraminifera from fossil data, Biol. Rev., 86, 900–927,
https://doi.org/10.1111/j.1469-185X.2011.00178.x, 2011.
Bates, D., Mächler, M., Bolker, B., and Walker, S.: Fitting linear
mixed-effects models using lme4, J. Stat. Softw., 67, 1–48,
https://doi.org/10.18637/jss.v067.i01, 2015.
Bé, A. W. H.: Ecology of recent planktonic foraminifera: Part I: Areal
distribution in the western North Atlantic, Micropaleontology, 5, 77–100,
https://doi.org/10.2307/1484157, 1959.
Bolli, H. M., Saunders, J. B., and Perch-Nielsen, K.: Plankton Stratigraphy:
Planktic Foraminifera, Calcareous Nannofossils and Calpionellids, Cambridge
Earth Science Series, Cambridge University Press, 600 pp., 1985.
Boltovskoy, E.: Twilight of foraminiferology, J. Paleontol., 39,
383–390, 1965.
Canudo, J. I., Keller, G., and Molina, E.: Cretaceous/Tertiary boundary
extinction pattern and faunal turnover at Agost and Caravaca, S.E. Spain,
Mar. Micropaleontol., 17, 319–341, https://doi.org/10.1016/0377-8398(91)90019-3, 1991.
CLIMAP: The surface of the ice-age earth, Science, 191, 1131–1137,
https://doi.org/10.1126/science.191.4232.1131, 1976.
Cohen, J.: A coefficient of agreement for nominal scales, Educ.
Psychol. Meas., 20, 37–46, https://doi.org/10.1177/001316446002000104, 1960.
Crawley, M. J.: The R book, John Wiley & Sons, 942 pp., 2007.
Darling, K. F., Kučera, M., Kroon, D., and Wade, C. M.: A resolution for
the coiling direction paradox in Neogloboquadrina pachyderma, Paleoceanography, 21, PA2011, https://doi.org/10.1029/2005pa001189, 2006.
Fenton, I. S.: Dataset: Fenton et al Reproducibility, Natural History Museum
Data Portal (data.nhm.ac.uk), available at:https://doi.org/10.5519/0094640, last
access: 6 September 2018.
Fleiss, J. L., Levin, B., and Paik, M. C.: Statistical Methods for Rates and
Proportions, John Wiley & Sons, 761 pp., 2013.
Ginsburg, R. N.: An attempt to resolve the controversy over the
end-Cretaceous extinction of planktic foraminifera at El Kef, Tunisia using
a blind test Introduction: Background and procedures, Mar.
Micropaleontol., 29, 67–68, https://doi.org/10.1016/S0377-8398(96)00038-2, 1997.
Hemleben, C., Spindler, M., and Anderson, O. R.: Modern Planktonic
Foraminifera, Springer-Verlag, 363 pp., 1989.
Hodgkinson, R. L.: Microfossil processing: a damage report,
Micropaleontology, 37, 320–326, https://doi.org/10.2307/1485894, 1991.
Isaac, N. J. B., Turvey, S. T., Collen, B., Waterman, C., and Baillie, J. E.
M.: Mammals on the EDGE: Conservation priorities based on threat and
phylogeny, PLOS ONE, 2, e296, https://doi.org/10.1371/journal.pone.0000296, 2007.
Keller, G.: Analysis of El Kef blind test I, Mar. Micropaleontol., 29,
89–93, https://doi.org/10.1016/S0377-8398(96)00044-8, 1997.
Kennett, J. P. and Srinivasan, M. S.: Neogene Planktonic Foraminifera: A
Phylogenetic Atlas, Hutchinson Ross Publishing Company, 263 pp., 1983.
Kučera, M., Rosell-Mele, A., Schneider, R., Waelbroeck, C., and Weinelt,
M.: Multiproxy Approach for the Reconstruction of the Glacial Ocean surface
(MARGO), Quaternary Sci. Rev., 24, 813–819, https://doi.org/10.1016/j.quascirev.2004.07.017, 2005a.
Kučera, M., Weinelt, M., Kiefer, T., Pflaumann, U., Hayes, A., Weinelt,
M., Chen, M.-T., Mix, A. C., Barrows, T. T., Cortijo, E., Duprat, J.,
Juggins, S., and Waelbroeck, C.: Reconstruction of sea-surface temperatures
from assemblages of planktonic foraminifera: Multi-technique approach based
on geographically constrained calibration data sets and its application to
glacial Atlantic and Pacific Oceans, Quaternary Sci. Rev., 24,
951–998, https://doi.org/10.1016/j.quascirev.2004.07.014,
2005b.
Kuhn, M.: caret: Classification and Regression Training, 2016.
Landis, J. R. and Koch, G. G.: The measurement of observer agreement for
categorical data, Biometrics, 33, 159–174, https://doi.org/10.2307/2529310, 1977.
Lipps, J. H.: The Cretaceous-Tertiary boundary: The El Kef blind test,
Mar. Micropaleontol., 29, 65–66, https://doi.org/10.1016/S0377-8398(96)00037-0, 1997.
Olsson, R. K., Hemleben, C., Berggren, W. A., and Huber, B. T.: Atlas of
Paleocene Planktonic Foraminifera, Smithsonian Contributions to
Paleobiology, Smithsonian Institution Press, 252 pp., 1999.
Pearson, P. N.: Planktonic foraminifer biostratigraphy and the development of
pelagic caps on guyots in the Marshall Islands Group, Ocean Drilling Program,
College Station, TX, ETATS-UNIS, 39, 21–59, 1995.
Pearson, P. N.: Evolutionary concepts in biostratigraphy, in: Unlocking the
Stratigraphical Record: Advances in Modern Stratigraphy, edited by: Doyle,
P. and Bennett, M. R., John Wiley & Sons, Chichester (UK), 123–144,
1998.
R Core Team: R: A language and environment for statistical computing. R
Foundation for Statistical Computing, Vienna, Austria,
https://www.R-project.org/, last access: 6 September
2018.
Rillo, M. C., Whittaker, J., Ezard, T. H. G., Purvis, A., Henderson, A. S.,
Stukins, S., and Miller, C. G.: The unknown planktonic foraminiferal pioneer
Henry A. Buckley and his collection at The Natural History Museum, London,
J. Micropalaeontol., 36, 191–194, https://doi.org/10.1144/jmpaleo2016-020, 2016.
Rutherford, S., D'Hondt, S., and Prell, W.: Environmental controls on the
geographic distribution of zooplankton diversity, Nature, 400, 749–753,
https://doi.org/10.1038/23449, 1999.
Siccha, M. and Kučera, M.: ForCenS, a curated database of planktonic
foraminifera census counts in marine surface sediment samples, Scientific
Data, 4, 170109, https://doi.org/10.1038/sdata.2017.109,
2017.
Spezzaferri, S., Kučera, M., Pearson, P. N., Wade, B. S., Rappo, S.,
Poole, C. R., Morard, R., and Stalder, C.: Fossil and genetic evidence for
the polyphyletic nature of the planktonic foraminifera
“Globigerinoides”, and description of the new genus
Trilobatus, PloS ONE, 5, 1–20, 2015.
Weiner, A. K. M., Weinkauf, M. F. G., Kurasawa, A., Darling, K. F., and
Kučera, M.: Genetic and morphometric evidence for parallel evolution of
the Globigerinella calida morphotype, Mar. Micropaleontol., 114, 19–35, https://doi.org/10.1016/j.marmicro.2014.10.003, 2015.
Weinkauf, M. F. G. and Milker, Y.: The effect of size fraction in analyses of
benthic foraminiferal assemblages: a case study comparing assemblages from
the > 125 and > 150 µm size fractions,
Front. Earth Sci., 6, 10 pp., https://doi.org/10.3389/feart.2018.00037, 2018.
Zachariasse, W. J., Riedel, W. R., Sanfilippo, A., Schmidt, R. R., Brolsma,
M. J., Schrader, H. J., Gersonde, R., Drooger, M. M., and Broekman, J. A.:
Micropaleontological counting methods and techniques: An exercise on an eight
metres section of the lower Pliocene of Capo Rossello, Sicily, Utrecht
Micropaleontological Bulletins, 17, 265 pp., 1978.
Zuur, A. F., Ieno, E. N., Walker, N., Saveliev, A. A., and Smith, G. M.:
Mixed Effects Models and Extensions in Ecology with R, Statistics for
Biology and Health, Springer-Verlag New York, 574 pp., 2009.
Short summary
In this study we investigate consistency in species-level identifications and whether disagreements are predictable. Twenty-three scientists identified a set of 100 planktonic foraminifera, noting their confidence in each identification. The median accuracy of students was 57 %; 79 % for experienced researchers. Where they were confident in the identifications, the values are 75 % and 93 %, respectively. Accuracy was significantly higher if the students had been taught how to identify species.
In this study we investigate consistency in species-level identifications and whether...
