Universität zu Köln

Richirt, Julien, Champmartin, Stephane, Schweizer, Magali, Mouret, Aurelia, Petersen, Jassin ORCID: 0000-0002-3591-9717, Ambari, Abdelhak and Jorissen, Frans J. (2019). Scaling laws explain foraminiferal pore patterns. Sci Rep, 9. LONDON: NATURE PUBLISHING GROUP. ISSN 2045-2322

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Abstract

5 Due to climate warming and increased anthropogenic impact, a decrease of ocean water oxygenation is expected in the near future, with major consequences for marine life. In this context, it is essential to develop reliable tools to assess past oxygen concentrations in the ocean, to better forecast these future changes. Recently, foraminiferal pore patterns have been proposed as a bottom water oxygenation proxy, but the parameters controlling foraminiferal pore patterns are still largely unknown. Here we use scaling laws to describe how both gas exchanges (metabolic needs) and mechanical constraints (shell robustness) control foraminiferal pore patterns. The derived mathematical model shows that only specific combinations of pore density and size are physically feasible. Maximum porosity, of about 30%, can only be obtained by simultaneously increasing pore size and decreasing pore density. A large empirical data set of pore data obtained for three pseudocryptic phylotypes of Ammonia, a common intertidal genus from the eastern Atlantic, strongly supports this conclusion. These new findings provide basic mechanistic understanding of the complex controls of foraminiferal pore patterns and give a solid starting point for the development of proxies of past oxygen concentrations based on these morphological features. Pore size and pore density are largely interdependent, and both have to be considered when describing pore patterns.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Richirt, Julien UNSPECIFIED UNSPECIFIED UNSPECIFIED Champmartin, Stephane UNSPECIFIED UNSPECIFIED UNSPECIFIED Schweizer, Magali UNSPECIFIED UNSPECIFIED UNSPECIFIED Mouret, Aurelia UNSPECIFIED UNSPECIFIED UNSPECIFIED Petersen, Jassin UNSPECIFIED orcid.org/0000-0002-3591-9717 UNSPECIFIED Ambari, Abdelhak UNSPECIFIED UNSPECIFIED UNSPECIFIED Jorissen, Frans J. UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-137484
DOI:	10.1038/s41598-019-45617-x
Journal or Publication Title:	Sci Rep
Volume:	9
Date:	2019
Publisher:	NATURE PUBLISHING GROUP
Place of Publication:	LONDON
ISSN:	2045-2322
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language BENTHIC FORAMINIFERA; MORPHOLOGICAL DISTINCTION; GLOBOBULIMINA-TURGIDA; BALTIC SEA; AMMONIA; DENSITY; DENITRIFICATION; TEMPERATURE; THICKNESS; ROTALIIDA Multiple languages Multidisciplinary Sciences Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/13748