Measures of Nutrient Processes as Indicators of Stream Ecosystem Health

Stoichiometry of nutrient recycling by vertebrates in a tropical stream: linking species identity and ecosystem processes

Michael J. Vanni,* Alexander S. Flecker, James M. Hood and Jenifer L. Headworth Department of Zoology, Miami University, Oxford, OH 45056, USA Department of Ecology and Evolutionary Biology, Cornell University, Ithaca, NY 14853, USA. *Correspondence: E-mail: [email protected] Present address: Department of Ecology, Evolution and Behavior, University of Minnesota St. Paul, MN 55108, USA. Abstra...

Orchids as Indicators of Ecosystem Health in Urban Bushland Fragments

Continental-scale effects of nutrient pollution on stream ecosystem functioning.

Excessive nutrient loading is a major threat to aquatic ecosystems worldwide that leads to profound changes in aquatic biodiversity and biogeochemical processes. Systematic quantitative assessment of functional ecosystem measures for river networks is, however, lacking, especially at continental scales. Here, we narrow this gap by means of a pan-European field experiment on a fundamental ecosys...

Nonnative fish stocking alters stream ecosystem nutrient dynamics.

Each year, millions of hatchery-raised fish are stocked into streams and rivers worldwide, yet the effects of hatchery-raised fish on stream nutrient cycles have seldom been examined. We quantified the influence of supplemental nonnative fish stocking, a widespread recreational fishery management practice, on in-stream nutrient storage and cycling. We predicted that supplemental, hatchery-raise...

Population Health Rankings as Policy Indicators and Performance Measures

Population health rankings can be used by various actors for different purposes. This article examines those potential uses and concludes that the chief promise of population health rankings lies in 2 areas. The first is to help set agendas - stimulating awareness, motivation, and debate over means to improved health outcomes. The second is to help establish broad responsibility for population ...