Salmon and alder as nitrogen sources to riparian forests in a boreal Alaskan watershed
Purchase on Springer.com
$39.95 / €34.95 / £29.95*
Rent the article at a discountRent now
* Final gross prices may vary according to local VAT.
Anadromous Pacific salmon (Oncorhynchus spp.) transport marine-derived nitrogen (MDN) to the rivers in which they spawn. Isotopic analyses of riparian vegetation in a boreal Alaskan watershed indicate that trees and shrubs near spawning streams derive ~24–26% of their foliar nitrogen (N) from salmon. Basal area growth of white spruce (Picea glauca) is enhanced at sites receiving MDN inputs. This marine N subsidy appears to be less important to riparian ecosystems where symbiotic N fixation by alder (Alnus crispa) is prevalent, although salmon carcasses may nonetheless be an important source of other marine-derived nutrients affecting productivity in these forests. These findings illustrate the complexity of interactions surrounding riparian forests and the interconnectedness of river and riparian ecosystems.
- Salmon and alder as nitrogen sources to riparian forests in a boreal Alaskan watershed
Volume 133, Issue 4 , pp 573-582
- Cover Date
- Print ISSN
- Online ISSN
- Additional Links
- Alnus crispa Marine-derived nutrients Oncorhynchus Picea glauca Riparian Stable isotopes
- Industry Sectors