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Microbial processing of plant remains is co‐limited by multiple nutrients in global grasslands
Abstract
Microbial processing of aggregate‐unprotected organic matter inputs is key for soil fertility, long‐term ecosystem carbon and nutrient sequestration and sustainable agriculture. We investigated the effects of adding multiple nutrients (nitrogen, phosphorus and potassium plus nine essential macro‐ and micro‐nutrients) on decomposition and biochemical transformation of standard plant materials buried in 21 grasslands from four continents. Addition of
[ver mas...]
Microbial processing of aggregate‐unprotected organic matter inputs is key for soil fertility, long‐term ecosystem carbon and nutrient sequestration and sustainable agriculture. We investigated the effects of adding multiple nutrients (nitrogen, phosphorus and potassium plus nine essential macro‐ and micro‐nutrients) on decomposition and biochemical transformation of standard plant materials buried in 21 grasslands from four continents. Addition of multiple nutrients weakly but consistently increased decomposition and biochemical transformation of plant remains during the peak‐season, concurrent with changes in microbial exoenzymatic activity. Higher mean annual precipitation and lower mean annual temperature were the main climatic drivers of higher decomposition rates, while biochemical transformation of plant remains was negatively related to temperature of the wettest quarter. Nutrients enhanced decomposition most at cool, high rainfall sites, indicating that in a warmer and drier future fertilized grassland soils will have an even more limited potential for microbial processing of plant remains.
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Author
Ochoa-Hueso, Raúl;
Borer, Elizabeth T.;
Seabloom, Eric William;
Hobbie, Sarah E.;
Risch, Anita C.;
Collins, Scott L.;
Alberti, Juan;
Bahamonde, Héctor Alejandro;
Brown, Cynthia S.;
Caldeira, Maria C.;
Daleo, Pedro;
Dickman, Chris R.;
Ebeling, Anne;
Eisenhauer, Nico;
Esch, Ellen H.;
Eskelinen, Anu;
Fernández, Victoria;
Güsewell, Sabine;
Gutierrez-Larruga, Blanca;
Hofmockel, Kirsten;
Laungani, Ramesh;
Lind, Eric M.;
López, Andrea;
McCulley, Rebecca L.;
Moore, Joslin L.;
Peri, Pablo Luis;
Power, Sally A.;
Price, Jodi N.;
Prober, Suzanne M.;
Roscher, Christiane;
Sarneel, Judith M.;
Schütz, Martin;
Siebert, Julia;
Standish, Rachel J.;
Velasco Ayuso, Sergio;
Virtanen, Risto;
Wardle, Glenda M.;
Wiehl, Georg;
Yahdjian, Laura;
Zamin, Tara;
Fuente
Global Change Biology (First published:10 June 2020)
Date
2020-06
Editorial
Wiley
ISSN
1354-1013
1365-2486
1365-2486
Formato
pdf
Tipo de documento
artículo
Palabras Claves
Derechos de acceso
Restringido
Excepto donde se diga explicitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)