气候变化领域集成服务门户(CCPortal): Factors influencing porosity in planktonic foraminifera

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DOI	https://doi.org/10.1594/PANGAEA.890092
	Factors influencing porosity in planktonic foraminifera
	Burke; Janet; Renema; Willem; Henehan; Michael J; Elder; Leanne E; Davis; Catherine V; Maas; Amy E; Foster; Gavin L; Schiebel; Ralf; Hull; Pincelli M
发布日期	2018-05-18
数据集类型	dataset
英文简介	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.
空间范围	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
语种	英语
国家	国际
学科大类	气候变化
学科子类	气候变化
文献类型	数据集
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/215242
推荐引用方式 GB/T 7714	Burke,Janet,Renema,et al. Factors influencing porosity in planktonic foraminifera.2018-05-18.https://doi.org/10.1594/PANGAEA.890092.