Journal ArticleDOI
Phosphorus legacy: overcoming the effects of past management practices to mitigate future water quality impairment.
Andrew N. Sharpley,Helen P. Jarvie,Anthony R. Buda,Linda May,Bryan M. Spears,Peter J. A. Kleinman +5 more
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TLDR
This study examined the drivers of legacy P at the watershed scale, specifically in relation to the physical cascades and biogeochemical spirals of P along the continuum from soils to rivers and lakes and via surface and subsurface flow pathways.Abstract:
The water quality response to implementation of conservation measures across watersheds has been slower and smaller than expected. This has led many to question the efficacy of these measures and to call for stricter land and nutrient management strategies. In many cases, this limited response has been due to the legacies of past management activities, where sinks and stores of P along the land-freshwater continuum mask the effects of reductions in edge-of-field losses of P. Accounting for legacy P along this continuum is important to correctly apportion sources and to develop successful watershed remediation. In this study, we examined the drivers of legacy P at the watershed scale, specifically in relation to the physical cascades and biogeochemical spirals of P along the continuum from soils to rivers and lakes and via surface and subsurface flow pathways. Terrestrial P legacies encompass prior nutrient and land management activities that have built up soil P to levels that exceed crop requirements and modified the connectivity between terrestrial P sources and fluvial transport. River and lake P legacies encompass a range of processes that control retention and remobilization of P, and these are linked to water and sediment residence times. We provide case studies that highlight the major processes and varying timescales across which legacy P continues to contribute P to receiving waters and undermine restoration efforts, and we discuss how these P legacies could be managed in future conservation programs.read more
Citations
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Journal ArticleDOI
Agriculture and Eutrophication: Where Do We Go from Here?
TL;DR: In this article, the authors use the UK as an example of societies' multiple stressors on water quality to explore the uncertainties and challenges in achieving a sustainable balance between useable water resources, diverse aquatic ecosystems and a viable agriculture.
Journal ArticleDOI
River dam impacts on biogeochemical cycling
Taylor Maavara,Qiuwen Chen,Kimberly Van Meter,Lee E. Brown,Jianyun Zhang,Jinren Ni,Christiane Zarfl +6 more
TL;DR: In this article, the impacts of dams on nutrient cycling and greenhouse production are discussed, emphasizing the need to consider biogeochemical cycling at all stages of dam lifespan, and regulating hydraulic residence time and environmental flows (or e-flows) can be used in planning and operation from dam conception to deconstruction.
Journal ArticleDOI
Use of commercial bio-inoculants to increase agricultural production through improved phosphrous acquisition
TL;DR: In this article, the authors review the terminology, composition and function of bio-inoculants and the many factors which impact on their efficacy for increasing P availability in different soil and plant environments.
Journal ArticleDOI
Protecting and restoring Europe's waters: An analysis of the future development needs of the Water Framework Directive
Laurence Carvalho,Eleanor B. Mackay,Ana Cristina Cardoso,Annette Baattrup-Pedersen,Sebastian Birk,Kirsty Blackstock,Gábor Borics,Ángel Borja,Christian K. Feld,Maria Teresa Ferreira,Lidija Globevnik,Bruna Grizzetti,Sarah Hendry,Daniel Hering,Martyn Kelly,Sindre Langaas,Kristian Meissner,Yiannis Panagopoulos,Ellis Penning,Josselin Rouillard,Sergi Sabater,Ursula Schmedtje,Bryan M. Spears,Markus Venohr,Wouter van de Bund,Anne Lyche Solheim +25 more
TL;DR: This analysis highlights that there is great potential to enhance assessment schemes through strategic design of monitoring networks and innovation, such as earth observation, and further integrate with other sectoral policies.
Journal ArticleDOI
Long-term accumulation and transport of anthropogenic phosphorus in three river basins
Stephen M. Powers,T. W. Bruulsema,Tim Burt,Neng long Chan,James J. Elser,Philip M. Haygarth,Nicholas J K Howden,Helen P. Jarvie,Yang Lyu,Heidi Peterson,Andrew N. Sharpley,Jianbo Shen,Fred Worrall,Fusuo Zhang +13 more
TL;DR: In this paper, the authors present an analysis of phosphorus fluxes in three large river basins, including published data on fertilizer, harvested crops, sewage, food waste and river fluxes.
References
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Journal ArticleDOI
The River Continuum Concept
TL;DR: It is hypothesized that producer and consumer communities characteristic of a given river reach become established in harmony with the dynamic physical conditions of the channel.
Journal ArticleDOI
The story of phosphorus: Global food security and food for thought
TL;DR: In this article, the authors put forward the case for including long-term phosphorus scarcity on the priority agenda for global food security, and presented opportunities for recovering phosphorus and reducing demand together with institutional challenges.
Book
Ecology of Shallow Lakes
TL;DR: The story of some shallow lakes is described in this article, where the authors present a model of the abiotic environment and the limits of knowledge in a shallow lake environment, including trophic cascades.
Journal ArticleDOI
Nutrient Imbalances in agricultural development
Peter M. Vitousek,Rosamond L. Naylor,T. Crews,Mark B. David,Laurie E. Drinkwater,Elisabeth A. Holland,Penny J Johnes,John Katzenberger,Luiz Antonio Martinelli,Pamela A. Matson,Generose Nziguheba,Dennis S. Ojima,Cheryl A. Palm,G. P. Robertson,Pedro A. Sanchez,Alan R. Townsend,Fusuo Zhang +16 more
TL;DR: Solutions to the nutrient challenges that face global agriculture can be informed by analyses of trajectories of change within, as well as across, agricultural systems.
Journal ArticleDOI
Lake responses to reduced nutrient loading - an analysis of contemporary long-term data from 35 case studies
Erik Jeppesen,Martin Søndergaard,Jens Peder Jensen,Karl E. Havens,Orlane Anneville,Laurence Carvalho,Michael F. Coveney,Rainer Deneke,Martin T. Dokulil,Bob Foy,Daniel Gerdeaux,Stephanie E. Hampton,Sabine Hilt,Külli Kangur,Jan Köhler,E. Lammens,Torben L. Lauridsen,Marina Manca,Maria Rosa Miracle,Brian Moss,Peeter Nõges,Gunnar Persson,Geoff Phillips,Rob Portielje,Susana Romo,Claire L. Schelske,Dietmar Straile,István Tátrai,Eva Willén,Monika Winder +29 more
TL;DR: In this article, the authors examined 35 long-term (5-35 years, mean: 16 years) lake re-oligotrophication studies and found that external total phosphorus loading resulted in lower in-lake TP concentration, lower chlorophyll a (chl a) concentration and higher Secchi depth in most lakes.
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