Salmon and alder as nitrogen sources to riparian forests in a boreal Alaskan watershed

@article{Helfield2002SalmonAA,
  title={Salmon and alder as nitrogen sources to riparian forests in a boreal Alaskan watershed},
  author={James M. Helfield and Robert J. Naiman},
  journal={Oecologia},
  year={2002},
  volume={133},
  pages={573-582}
}
Abstract. 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… CONTINUE READING

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