Complexity Digest 2001.16 - 05.02
16-Apr-2001
Control of Nitrogen Export From Watersheds By Headwater Streams, Science
Excerpts: Nitrogen (N) loading of terrestrial and
aquatic ecosystems is increasing worldwide as a result of human
activities such as fertilizer application, N fixation by legume
crops, human and animal waste disposal, and fossil fuel
combustion. As terrestrial ecosystems become saturated with N,
excess N moves with surface runoff and groundwater flow to
streams, lakes, rivers, and coastal oceans. (…) Results from
this (…) study (…) demonstrate how watershed-derived N
is processed in stream channels and how these transformations
affect the export of N to downstream ecosystems.
- Control
of Nitrogen Export From Watersheds By Headwater
Streams,
Peterson, B.J., Wollheim, W.M.,
Mulholland, P.J., Webster, J.R., Meyer, J.L., Tank,
J.L., Marti, E., Bowden, W.B., Valett, H.M., Hershey,
A.E., Mcdowell, W.H., Dodds, W.K., Hamilton, S.K.,
Gregory, S., Morrall, D.D, Science 2001 292: 86-90