Materials fluxes through freshwater ecosystems: Review and gap analysis summary report

[摘要] Catchment processes affect the delivery of particulate and dissolved materials, including carbon, phosphorus, nitrogen and silica to rivers and reservoirs. The timing, delivery and chemical form of these materials affects the structure and function of freshwater ecosystems.However, research in the areas of catchment biogeochemistry and freshwater ecology has often not been well integrated across disciplinary knowledge domains. In 2012/13, Water for a Healthy Country undertook a project to review recent progress in understanding of biogeochemical cycles in aquatic ecosystems, to identify new insights that will enhance our ability to inform catchment management based on ecological outcomes, and to highlight areas of solid knowledge, speculation and knowledge gaps.In the course of this project, a series of five review papers has been prepared for submission to peer-reviewed international journals. These papers address:1)The state of the art in biogeochemical understanding of organic phosphorus in freshwater systems (Baldwin, submitted).2)The state of the art in predictive simulation modelling of phosphorus cycles in freshwater ecosystems (Robson, submitted).3)Food webs and carbon fluxes in freshwater ecosystems (Matveev, in prep.).4)Recent advances in understanding of silica transport and transformation and the role of silica in aquatic ecosystems (Ford and Tomkins, in prep.)5)How nitrogen cycles in Australian freshwater systems may change in the next 100 years, and implications for ecosystem function (Revill et al., in prep.). This report brings together the key findings of these papers, with an emphasis on findings with clear implications for management of freshwater ecosystems or for the science that we should be doing over the next few years.

[发布日期] 2013-05-05 [发布机构] CSIRO

[学科分类] 地球科学(综合)