The governance gap surrounding phosphorus

Rosemarin, Arno; Ekane, Nelson

doi:10.1007/s10705-015-9747-9

Cited by 36 publications

(27 citation statements)

References 20 publications

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“…Recent reports about environmental problems related to P availability and imbalances in N:P ratios and the P trilemma among rich, poor, and P supplier countries (Obersteiner et al, ) have attempted to address issues and solutions for P availability (Figure ). Some issues for avoiding the impacts of potential P scarcity on global food security for an increasing human population are important (Obersteiner et al, ; Rosemarin & Ekane, ), including increased demand and prices for P fertilizers that will likely render them inaccessible to poor and food‐insecure countries (Kahsay, ; Obersteiner et al, ). Projections of demands for P fertilizers estimate a doubling of current levels by 2050 (Mogollón, Beusen, Grinsven, Westhoek, & Bouwman, ), consistent with short‐term predictions (Jedelhauser, Mehr, & Binder, ; Matsubae, Kajiyama, Hiraki, & Nagasaka, ; Withers, Doody, & Sylvester‐Bradley, ; Withers, Rodrigues, et al, ).…”

Section: Impacts Of Shifts In N P and N:p Ratios On Food Security Amentioning

confidence: 99%

“…Most P reserves are in only three countries, with Morocco estimated to contain 85% of the global share, Recent reports about environmental problems related to P availability and imbalances in N:P ratios and the P trilemma among rich, poor, and P supplier countries (Obersteiner et al, 2013) have attempted to address issues and solutions for P availability (Figure 7). Some issues for avoiding the impacts of potential P scarcity on global food security for an increasing human population are important (Obersteiner et al, 2013;Rosemarin & Ekane, 2016), including increased demand and prices for P fertilizers that will likely render them inaccessible to poor and food-insecure countries (Kahsay, 2019;Obersteiner et al, 2013).…”

Section: Food Securitymentioning

confidence: 99%

“…A change in human diet to one with a larger proportion of plant-based food may be an effective tool to improve P-use efficiency (Reijnders, 2014;Withers et al, 2015). Studies have indicated that food security may be assured by improving P recycling by the application of a range of technologies and improved and efficient management of N and P fertilization to avoid imbalances in N:P ratios and subsequent associated cascades of environmental and economic problems (Cordell et al, 2012;Rahman et al, 2019;Rosemarin & Ekane, 2016;Weikard, 2016).…”

Section: Food Securitymentioning

confidence: 99%

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Anthropogenic global shifts in biospheric N and P concentrations and ratios and their impacts on biodiversity, ecosystem productivity, food security, and human health

Peñuelas

Janssens

Ciais

et al. 2020

Global Change Biology

170

119

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The availability of carbon (C) from high levels of atmospheric carbon dioxide (CO2) and anthropogenic release of nitrogen (N) is increasing, but these increases are not paralleled by increases in levels of phosphorus (P). The current unstoppable changes in the stoichiometries of C and N relative to P have no historical precedent. We describe changes in P and N fluxes over the last five decades that have led to asymmetrical increases in P and N inputs to the biosphere. We identified widespread and rapid changes in N:P ratios in air, soil, water, and organisms and important consequences to the structure, function, and biodiversity of ecosystems. A mass‐balance approach found that the combined limited availability of P and N was likely to reduce C storage by natural ecosystems during the remainder of the 21st Century, and projected crop yields of the Millennium Ecosystem Assessment indicated an increase in nutrient deficiency in developing regions if access to P fertilizer is limited. Imbalances of the N:P ratio would likely negatively affect human health, food security, and global economic and geopolitical stability, with feedbacks and synergistic effects on drivers of global environmental change, such as increasing levels of CO2, climatic warming, and increasing pollution. We summarize potential solutions for avoiding the negative impacts of global imbalances of N:P ratios on the environment, biodiversity, climate change, food security, and human health.

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Section: Impacts Of Shifts In N P and N:p Ratios On Food Security Amentioning

confidence: 99%

Section: Food Securitymentioning

confidence: 99%

Section: Food Securitymentioning

confidence: 99%

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Anthropogenic global shifts in biospheric N and P concentrations and ratios and their impacts on biodiversity, ecosystem productivity, food security, and human health

Peñuelas

Janssens

Ciais

et al. 2020

Global Change Biology

170

119

View full text Add to dashboard Cite

show abstract

“…The accumulation and subsequent mobilization of large concentrations of N and PO 4 in agricultural soils is a major contributor to surface water pollution and an indicator of imbalance in agricultural systems worldwide (Condron et al, 2013). This is particularly true in Europe, the United States, and Asia, where agricultural intensification and profligate use of manures and chemical fertilizers has increased soil nutrient stocks beyond crop requirement (Rosemarin and Ekane, 2016). As the mismanagement of soil continues to push the global boundaries of nutrient sustainability (Steffen et al, 2015), new approaches are needed to more effectively manage crop nutrition.…”

Section: Introductionmentioning

confidence: 99%

Is Green Manure from Riparian Buffer Strip Species an Effective Nutrient Source for Crops?

et al. 2019

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Agriculture needs to reduce inputs of inorganic fertilizers and close the loop on nutrients that can otherwise become environmental pollutants. This can be achieved by promoting recycling of nutrients within the agricultural landscape. We investigated the extent to which plants found in riparian buffer zones have the potential to provide nutrients to crops as a green manure, through plant growth and decomposition studies. Under controlled conditions, species typical of Scottish riparian buffer strips were tested for their ability to accumulate biomass and nutrients in tissue under N-and P-replete conditions and whether this ability enhanced the utility of the resulting green manure in promoting crop growth. In this proof-of-concept study, we found that green manure derived from riparian buffer strips did not effectively replace inorganic fertilizer and only had a significant positive effect on growth, yield, and nutrient accumulation in barley (Hordeum vulgare L.) when it was integrated with the addition of inorganic fertilizers. The individual species tested varied in the amount of P they accumulated in their tissue (1.38-52.73 mg P plant −1 ), but individual species did not differ in their ability to promote yield when used as a green manure.Our results indicate that selecting certain species in the buffer strip on the basis of their nutrient accumulating abilities is not an effective way to increase the utility of buffer strip green manure as a nutrient source for crops.

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“…At present about 240 megatons of high quality and accessible phosphate rock (ore) are mined per year and this is yearly increasing at a rate of 2% [6]. The geopolitics of P are only now being analyzed and the risks regarding potential shortages are high [7,8]. Global P demand will continue to rise over the remainder of the twenty-first century due to the growing world population with increased demand for meat and dairy products, but also biofuels and mineral fertilizers.…”

Section: Introductionmentioning

confidence: 99%

Bridging Gaps in the Agricultural Phosphorus Cycle from an Animal Husbandry Perspective—The Case of Pigs and Poultry

et al. 2018

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Since phosphorus (P) is an essential element for life, its usage and application across agricultural production systems requires great attention. Monogastric species such as pigs and poultry can significantly contribute to global food security but these animals remain highly dependent on the supply of mineral inorganic P in their feeds. Pig and poultry, which represent 70% of the global meat production, are also major P excretors and thus represent important sources of environmental P inputs. Balancing the P cycle within farming systems is crucial to achieve P sustainable and resilient livestock production. Therefore, the interconnection of animal feed, livestock farming, manure, and soil/aquatic ecosystems requires multidisciplinary approaches to improve P management. With regard to a sustainable agricultural P cycle, this study addresses aspects of feeding strategies and animal physiology (e.g., phase feeding, P conditioning, liquid feeding, phytase supplementation, genetics), soil agroecosystems (e.g., P cycling, P losses, P gains), reuse and recycling (e.g., manure, slaughter waste), measures of farmers' economic performance (e.g., bio-economic models), and P governance/policy instruments (e.g., P quota, P tax). To reconcile the economic and ecological sustainability of animal husbandry, the strategic objective of future research will be to provide solutions for a sufficient supply of high-quality animal products from resource-efficient and economically competitive agro-systems which are valued by society and preserve soil and aquatic ecosystems.

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The governance gap surrounding phosphorus

Cited by 36 publications

References 20 publications

Anthropogenic global shifts in biospheric N and P concentrations and ratios and their impacts on biodiversity, ecosystem productivity, food security, and human health

Anthropogenic global shifts in biospheric N and P concentrations and ratios and their impacts on biodiversity, ecosystem productivity, food security, and human health

Is Green Manure from Riparian Buffer Strip Species an Effective Nutrient Source for Crops?

Bridging Gaps in the Agricultural Phosphorus Cycle from an Animal Husbandry Perspective—The Case of Pigs and Poultry

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