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Single-throughput Complementary High-resolution Analytical Techniques for Characterizing Complex Natural Organic Matter Mixtures
Published on: January 7, 2019
Nutrient recycling affects autotroph and ecosystem stoichiometry
Ford Ballantyne1, Duncan N L Menge, Annette Ostling
1Department of Ecology and Evolutionary Biology, Princeton University, Princeton, New Jersey 08544, USA. fballant@princeton.edu
The American Naturalist
|April 9, 2010
Summary
Nutrient recycling significantly influences autotroph stoichiometry (the balance of nutrients in organisms). Preferential phosphorus recycling is crucial for biomass production across diverse ecosystems.
Area of Science:
- Ecology
- Biogeochemistry
- Environmental Science
Background:
- Autotroph stoichiometry is shaped by biotic and abiotic factors, with nutrient availability playing a key role.
- Nutrient recycling through remineralization is a significant source of inorganic nutrients for autotrophs, impacting their stoichiometry.
Purpose of the Study:
- To quantitatively investigate the relationship between nutrient availability, autotroph stoichiometry, and nutrient recycling.
- To develop a model predicting autotroph stoichiometry based on nutrient input and recycling rates.
Main Methods:
- Analysis of a stoichiometrically explicit model of autotroph growth.
- Incorporation of Michaelis-Menten-Monod nutrient uptake kinetics, Droop growth, and Liebig's law of the minimum.
- Derivation of a steady-state relationship to estimate nutrient (N and P) recycling.
Main Results:
- Increased recycling of a limiting nutrient can lead to colimitation and alter autotroph and environmental stoichiometry.
- A method was derived to estimate the relative recycling of nitrogen (N) and phosphorus (P) in ecosystems.
- Estimates of N and P recycling were made for marine, aquatic, and terrestrial ecosystems.
Conclusions:
- Preferential phosphorus recycling is vital for biomass production across ecosystems.
- Greater P retention at organismal and ecosystem levels underscores its importance.
- Understanding nutrient recycling is key to predicting ecosystem responses to nutrient availability.
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