Burke, Janet; Renema, Willem; Henehan, Michael J; Elder, Leanne E; Davis, Catherine V; Maas, Amy E; Foster, Gavin L; Schiebel, Ralf; Hull, Pincelli M (2018): Factors influencing porosity in planktonic foraminifera [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.890092
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Abstract:
The clustering of mitochondria near pores in the test walls of foraminifera suggests that these perforations play a critical role in metabolic gas exchange. As such, pore measurements could provide a novel means of tracking changes in metabolic rate in the fossil record. However, in planktonic foraminifera, variation in pore size, density, and porosity have been variously attributed to environmental, biological, and taxonomic drivers, complicating such an interpretation. Here we examine the environmental, biological, and evolutionary determinants of porosity in 718 individuals representing 17 morphospecies of planktonic foraminifera from 6 core tops in the North Atlantic. Using random forest models, we find that porosity is primarily correlated to size and habitat temperature, two key factors in determining metabolic rates. In order to test if this correlation arose spuriously through the association of cryptic species with distinct biomes, we cultured Globigerinoides ruber in three different temperature conditions, and found that porosity increased with temperature. Crucially, these results show that porosity can be plastic: changing in response to environmental drivers within the lifetime of an individual foraminifer. This demonstrates the potential of porosity as a proxy for foraminiferal metabolic rates, with significance for interpreting geochemical data and the physiology of foraminifera in non-analog environments. It also highlights the importance of phenotypic plasticity (i.e., ecophenotypy) in accounting for some aspects of morphological variation in the modern and fossil record.
Related to:
Burke, Janet; Renema, Willem; Henehan, Michael J; Elder, Leanne E; Davis, Catherine V; Maas, Amy E; Foster, Gavin L; Schiebel, Ralf; Hull, Pincelli M (2018): Factors influencing test porosity in planktonic foraminifera. Biogeosciences, 15(21), 6607-6619, https://doi.org/10.5194/bg-15-6607-2018
Coverage:
Median Latitude: 31.207733 * Median Longitude: -39.607067 * South-bound Latitude: -29.660000 * West-bound Longitude: -64.400000 * North-bound Latitude: 64.710000 * East-bound Longitude: -28.910000
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
7 datasets
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Datasets listed in this publication series
- Burke, J; Renema, W; Henehan, MJ et al. (2018): 2D morphometrics of planktonic Foraminifera from the North Atlantic. https://doi.org/10.1594/PANGAEA.890085
- Burke, J; Renema, W; Henehan, MJ et al. (2018): 3D morphometrics of planktonic Foraminifera from the North Atlantic. https://doi.org/10.1594/PANGAEA.890086
- Burke, J; Renema, W; Henehan, MJ et al. (2018): Core top habitat of Foraminifera in the North Atlantic. https://doi.org/10.1594/PANGAEA.890091
- Burke, J; Renema, W; Henehan, MJ et al. (2018): Metadata of planktonic Foraminifera from the North Atlantic. https://doi.org/10.1594/PANGAEA.890084
- Burke, J; Renema, W; Henehan, MJ et al. (2018): Morphometrics of cultured Globigerinoides ruber. https://doi.org/10.1594/PANGAEA.890090
- Burke, J; Renema, W; Henehan, MJ et al. (2018): Porosity of planktonic Foraminifera from the North Atlantic. https://doi.org/10.1594/PANGAEA.890088
- Burke, J; Renema, W; Henehan, MJ et al. (2018): Porosity of cultured Globigerinoides ruber. https://doi.org/10.1594/PANGAEA.890089