Modelling planktic foraminifer growth and distribution using an ecophysiological multi-species approach
By F. Lombard, L. Labeyrie, E. Michel, L. Bopp, E. Cortijo, S. Retailleau, H. Howa, F. Jorissen. 2011
102 citations recorded by the source corpus.
Abstract. We present an eco-physiological model reproducing the growth of eight foraminifer species (Neogloboquadrina pachyderma, Neogloboquadrina incompta, Neogloboquadrina dutertrei, Globigerina bulloides, Globigerinoides ruber, Globigerinoides sacculifer, Globigerinella siphonifera and Orbulina universa). By using the main physiological rates of foraminifers (nutrition, respiration, symbiotic photosynthesis), this model estimates their growth as a function of temperature, light availability, and food concentration. Model parameters are directly derived or calibrated from experimental observations and only the influence of food concentration (estimated via Chlorophyll-a concentration) was calibrated against field observations. Growth rates estimated from the model show positive correlation with observed abundance from plankton net data suggesting close coupling between individual growth and population abundance. This observation was used to directly estimate potential abundance from the model-derived growth. Using satellite data, the model simulate the dominant foraminifer species with a 70.5% efficiency when compared to a data set of 576 field observations worldwide. Using outputs of a biogeochemical model of the global ocean (PISCES) instead of satellite images as forcing variables gives also good results, but with lower efficiency (58.9%). Compared to core tops observations, the model also correctly reproduces the relative worldwide abundance and the diversity of the eight species when using either satellite data either PISCES results. This model allows prediction of the season and water depth at which each species has its maximum abundance potential. This offers promising perspectives for both an improved quantification of paleoceanographic reconstructions and for a better understanding of the foraminiferal role in the marine carbon cycle.
Subfields: Atmospheric Science, Ecology, Oceanography
View Paper: https://www.semanticscholar.org/paper/b470248b117d142b2406ce8f89f72356542f7b88
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Citations in the corpus
- Global analysis of seasonality in the shell flux of extant planktonic foraminifera (2015, background): “Reproductive success would then simply follow temperature, leading to the observed seasonality in the shell fluxes (e.g. Lombard et al., 2011; Zaric et al., 2005).”
- The effects of changing climate on microzooplankton grazing and community structure: drivers, predictions and knowledge gaps (2013, background): “…effects of increased CO2 and lower pH on calcification among planktonic foraminifera are rare, yet there are predictions that these changing environmental conditions will significantly affect calcification in these species within the next century (Russell et al., 2004; Lombard et al., 2010, 2011).”