Articles | Volume 13, issue 4
https://doi.org/10.5194/bg-13-1149-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/bg-13-1149-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
Research article
| 
25 Feb 2016
Research article |
| 25 Feb 2016
Differential resilience of ancient sister lakes Ohrid and Prespa to environmental disturbances during the Late Pleistocene
Elena Jovanovska
CORRESPONDING AUTHOR
Department of Animal Ecology and Systematics, Justus Liebig University, Giessen, Germany
Aleksandra Cvetkoska
Palaeoecology, Department of Physical Geography, Faculty of Geosciences, Utrecht University, Utrecht, the Netherlands
Torsten Hauffe
Department of Animal Ecology and Systematics, Justus Liebig University, Giessen, Germany
Zlatko Levkov
Institute of Biology, University Ss. Cyril and Methodius, Skopje, the Former Yugoslav Republic of Macedonia
Bernd Wagner
Institute of Geology and Mineralogy, University of Cologne, Cologne, Germany
Roberto Sulpizio
Dipartimento di Scienze della Terra e Geoambientali, Bari, Italy
IDPA-CNR, Milan, Italy
Alexander Francke
Institute of Geology and Mineralogy, University of Cologne, Cologne, Germany
Christian Albrecht
Department of Animal Ecology and Systematics, Justus Liebig University, Giessen, Germany
Thomas Wilke
Department of Animal Ecology and Systematics, Justus Liebig University, Giessen, Germany
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A diverse suite of 'fossils' associated with the ~1.5 Ga Volyn (Ukraine) kerite was published recently. We show that at least some of them represent modern contamination including plant hairs, pollen, and likely later fungal growth. Comparable diversity is shown to exist in modern museum dust, this calling into question whether any part of the Volyn biota is of biological origin while emphasising the need for scrupulous care in collecting, analysing, and identifying Precambrian microfossils.
Walter Finsinger, Christian Bigler, Christoph Schwörer, and Willy Tinner
EGUsphere, https://doi.org/10.5194/egusphere-2023-2623, https://doi.org/10.5194/egusphere-2023-2623, 2023
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Rate of changes based on compositional data are ambiguous as they may rise irrespective of the underlying trajectory of ecosystems. We emphasise the importance of characterizing both the direction and the rate of palaeoecological changes in terms of key features of ecosystems rather than solely on community composition. Past accelerations of community transformation may document the potential of ecosystems to rapidly recover important ecological attributes and functions.
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
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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.
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
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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.
Zofia Dubicka, Maria Gajewska, Wojciech Kozłowski, Pamela Hallock, and Johann Hohenegger
Biogeosciences, 18, 5719–5728, https://doi.org/10.5194/bg-18-5719-2021, https://doi.org/10.5194/bg-18-5719-2021, 2021
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Benthic foraminifera play a significant role in modern reefal ecosystems mainly due to their symbiosis with photosynthetic microorganisms. Foraminifera were also components of Devonian stromatoporoid coral reefs; however, whether they could have harbored symbionts has remained unclear. We show that Devonian foraminifera may have stayed photosynthetically active, which likely had an impact on their evolutionary radiation and possibly also on the functioning of Paleozoic shallow marine ecosystems.
Tanya J. R. Lippmann, Michiel H. in 't Zandt, Nathalie N. L. Van der Putten, Freek S. Busschers, Marc P. Hijma, Pieter van der Velden, Tim de Groot, Zicarlo van Aalderen, Ove H. Meisel, Caroline P. Slomp, Helge Niemann, Mike S. M. Jetten, Han A. J. Dolman, and Cornelia U. Welte
Biogeosciences, 18, 5491–5511, https://doi.org/10.5194/bg-18-5491-2021, https://doi.org/10.5194/bg-18-5491-2021, 2021
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This paper is a step towards understanding the basal peat ecosystem beneath the North Sea. Plant remains followed parallel sequences. Methane concentrations were low with local exceptions, with the source likely being trapped pockets of millennia-old methane. Microbial community structure indicated the absence of a biofilter and was diverse across sites. Large carbon stores in the presence of methanogens and in the absence of methanotrophs have the potential to be metabolized into methane.
Raphaël Morard, Franck Lejzerowicz, Kate F. Darling, Béatrice Lecroq-Bennet, Mikkel Winther Pedersen, Ludovic Orlando, Jan Pawlowski, Stefan Mulitza, Colomban de Vargas, and Michal Kucera
Biogeosciences, 14, 2741–2754, https://doi.org/10.5194/bg-14-2741-2017, https://doi.org/10.5194/bg-14-2741-2017, 2017
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The exploitation of deep-sea sedimentary archive relies on the recovery of mineralized skeletons of pelagic organisms. Planktonic groups leaving preserved remains represent only a fraction of the total marine diversity. Environmental DNA left by non-fossil organisms is a promising source of information for paleo-reconstructions. Here we show how planktonic-derived environmental DNA preserves ecological structure of planktonic communities. We use planktonic foraminifera as a case study.
Aleksandra Cvetkoska, Elena Jovanovska, Alexander Francke, Slavica Tofilovska, Hendrik Vogel, Zlatko Levkov, Timme H. Donders, Bernd Wagner, and Friederike Wagner-Cremer
Biogeosciences, 13, 3147–3162, https://doi.org/10.5194/bg-13-3147-2016, https://doi.org/10.5194/bg-13-3147-2016, 2016
Elizaveta Rivkina, Lada Petrovskaya, Tatiana Vishnivetskaya, Kirill Krivushin, Lyubov Shmakova, Maria Tutukina, Arthur Meyers, and Fyodor Kondrashov
Biogeosciences, 13, 2207–2219, https://doi.org/10.5194/bg-13-2207-2016, https://doi.org/10.5194/bg-13-2207-2016, 2016
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A comparative analysis of the metagenomes from two 30,000-year-old permafrost samples, one of lake-alluvial origin and the other from late Pleistocene Ice Complex sediments, revealed significant differences within microbial communities. The late Pleistocene Ice Complex sediments (which are characterized by the absence of methane with lower values of redox potential and Fe2+ content) showed both a low abundance of methanogenic archaea and enzymes from the carbon, nitrogen, and sulfur cycles.
L. Leuzinger, L. Kocsis, J.-P. Billon-Bruyat, S. Spezzaferri, and T. Vennemann
Biogeosciences, 12, 6945–6954, https://doi.org/10.5194/bg-12-6945-2015, https://doi.org/10.5194/bg-12-6945-2015, 2015
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We measured the oxygen isotopic composition of Late Jurassic chondrichthyan teeth (sharks, rays, chimaeras) from the Swiss Jura to get ecological information. The main finding is that the extinct shark Asteracanthus (Hybodontiformes) could inhabit reduced salinity areas, although previous studies on other European localities always resulted in a clear marine isotopic signal for this genus. We propose a mainly marine ecology coupled with excursions into areas of lower salinity in our study site.
L. Zhang, L. Zhao, Z.-Q. Chen, T. J. Algeo, Y. Li, and L. Cao
Biogeosciences, 12, 1597–1613, https://doi.org/10.5194/bg-12-1597-2015, https://doi.org/10.5194/bg-12-1597-2015, 2015
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The Smithian--Spathian boundary was a key event in the recovery of marine environments and ecosystems following the end-Permian mass extinction ~1.5 million years earlier. Our analysis of the Shitouzhai section in South China reveals major changes in oceanographic conditions at the SSB intensification of oceanic circulation leading to enhanced upwelling of nutrient- and sulfide-rich deep waters and coinciding with an abrupt cooling that terminated the Early Triassic hothouse climate.
J. Quirk, J. R. Leake, S. A. Banwart, L. L. Taylor, and D. J. Beerling
Biogeosciences, 11, 321–331, https://doi.org/10.5194/bg-11-321-2014, https://doi.org/10.5194/bg-11-321-2014, 2014
D. Fredh, A. Broström, M. Rundgren, P. Lagerås, F. Mazier, and L. Zillén
Biogeosciences, 10, 3159–3173, https://doi.org/10.5194/bg-10-3159-2013, https://doi.org/10.5194/bg-10-3159-2013, 2013
D. J. Charman, D. W. Beilman, M. Blaauw, R. K. Booth, S. Brewer, F. M. Chambers, J. A. Christen, A. Gallego-Sala, S. P. Harrison, P. D. M. Hughes, S. T. Jackson, A. Korhola, D. Mauquoy, F. J. G. Mitchell, I. C. Prentice, M. van der Linden, F. De Vleeschouwer, Z. C. Yu, J. Alm, I. E. Bauer, Y. M. C. Corish, M. Garneau, V. Hohl, Y. Huang, E. Karofeld, G. Le Roux, J. Loisel, R. Moschen, J. E. Nichols, T. M. Nieminen, G. M. MacDonald, N. R. Phadtare, N. Rausch, Ü. Sillasoo, G. T. Swindles, E.-S. Tuittila, L. Ukonmaanaho, M. Väliranta, S. van Bellen, B. van Geel, D. H. Vitt, and Y. Zhao
Biogeosciences, 10, 929–944, https://doi.org/10.5194/bg-10-929-2013, https://doi.org/10.5194/bg-10-929-2013, 2013
B. Van Bocxlaer, W. Salenbien, N. Praet, and J. Verniers
Biogeosciences, 9, 4497–4512, https://doi.org/10.5194/bg-9-4497-2012, https://doi.org/10.5194/bg-9-4497-2012, 2012
D. Hippler, N. Hu, M. Steiner, G. Scholtz, and G. Franz
Biogeosciences, 9, 1765–1775, https://doi.org/10.5194/bg-9-1765-2012, https://doi.org/10.5194/bg-9-1765-2012, 2012
J. M. Reed, A. Cvetkoska, Z. Levkov, H. Vogel, and B. Wagner
Biogeosciences, 7, 3083–3094, https://doi.org/10.5194/bg-7-3083-2010, https://doi.org/10.5194/bg-7-3083-2010, 2010
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