INIBIOMA   20415
INSTITUTO DE INVESTIGACIONES EN BIODIVERSIDAD Y MEDIOAMBIENTE
Unidad Ejecutora - UE
capítulos de libros
Título:
Phosphorus in urban and agricultural landscapes
Autor/es:
SHELBY H. RISKIN; GASTON SMALL; ROBERT MIKKELSEN; GENEVIEVE METSON; ANNA BATEMAN; JAMES COOPER; OLA STEDJE HANSERUD; PHILIP M. HAYGARTH; CECILIA LASPOUMADERES; MICHELLE MCCRACKIN ; SONYA REMINGTON
Libro:
Phosphorus, Food, and Our Future
Editorial:
OXFORD UNIV PRESS
Referencias:
Lugar: New York; Año: 2013; p. 86 - 111
Resumen:
Increasing the use of inorganic phosphorus (P) in the human food chain has 38 greatly contributed to our ability to feed a growing world population. Phosphorus is 39 essential to both crops and consumers, and inorganic phosphorus fertilizers, along with 40 other nutrient and pesticide inputs, have allowed us to double food production in the last 41 40 years (Tilman et al. 2001, FAO 2009). 42 As part of this increasing P use in food production, humans have tripled the 43 annual amount of P moving through the global ecosystem compared to natural flows 44 (Smil 2000). Much of this added P is accumulating in agricultural soils and another 45 fraction is entering aquatic ecosystems, either at the beginning of the human food chain 46 from agricultural runoff or at the end via wastewater effluent, contributing to 47 eutrophication (Schindler 2006, Carpenter and Bennett 2011). Recent attention has been 48 drawn to how much alteration of the P cycle the globe can withstand without irreversible 49 thresholds of environmental degradation being crossed (Rockstrom et al. 2009, Carpenter 50 and Bennett 2011, Townsend and Porder 2011) and it has been suggested that at least one 51 boundary, that of irreversible freshwater eutrophication, may have already been crossed 52 (Carpenter and Bennett 2011).