Spohn, M: Element cycling as driven by stoichiometric homeostasis of soil microorganisms, Basic and Applied Ecology, 17(6), 471-478 (2016), doi:10.1016/j.baae.2016.05.003
Abstract:
Cycling of carbon (C), nitrogen (N) and phosphorus (P) at the ecosystem scale is largely driven by microbial activity. A major factor that controls element cycling is the stoichiometric relationship between the microbial biomass and its substrate. I review recent advances in the field of ecological stoichiometry in terrestrial ecology with emphasis on processes performed by non-mycorrhizal soil microorganisms. The review shows that key processes of element cycling are driven by the property of microorganisms to maintain their biomass element ratio by (I) adjusting rates of element acquisition processes (organic matter decomposition, N2 fixation and P solubilization) in order to acquire missing elements, and by (II) adjusting element partitioning and turnover times of elements in the microbial biomass to ratios of available elements. The review also shows that turnover times of elements in the microbial biomass have been neglected in ecological stoichiometry so far, although they are likely of high importance for microorganisms that thrive on substrates with extremely high C:nutrient ratios. Long turnover times of nutrients in the microbial biomass may explain why net nutrient mineralization also occurs at very high substrate C:nutrient ratios. In conclusion, ecological stoichiometry provides a conceptual framework for predicting relationships between the cycling of several key elements at the ecosystem scale, whose potential has not fully been exploited in terrestrial ecology yet.
Aktuelle Termine


BayCEER-Kolloquium:
Do. 25.04.2024
Perspectives and challenges in the restoration and conservation of two isolated habitats: gypsum and cliffs
BayCEER Short Courses:
Mi. 24.04.2024 aktuell
Mobile Film Making Workshop (for PhDs/PostDosc/Profs of BayCEER)
Fr. 26.04.2024
Mobile Film Making Workshop (for students of BayCEER)
Ökologisch-Botanischer Garten:
Fr. 26.04.2024
Aktion | Kräuterreich & regional: Backkunst im ÖBG (zus. mit HWK)
Fr. 26.04.2024
Führung | Erdbeer-Minze und Zimmerknoblauch: Gewürzkräuter
Wetter Versuchsflächen
Luftdruck (356m): 964.4 hPa
Lufttemperatur: 4.8 °C
Niederschlag: 0.0 mm/24h
Sonnenschein: <1 h/d

...mehr
Lufttemperatur: 0.7 °C
Niederschlag: 0.1 mm/24h

...mehr
Diese Webseite verwendet Cookies. weitere Informationen