Differential response of two pinus spp. to avian nitrogen input as revealed by nitrogen isotope analysis for tree rings

Chitoshi Mizota, Maximo Larry Lopez Caceres, Toshiro Yamanaka, Yoshihiro Nobori

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

Temporal variations in N concentration and δ 15N value of annual tree rings (1 year of time resolution) of two Japanese Black Pine (Pinus thunbergii) and three Japanese Red Pine (Pinus densiflora) trees under current breeding activity of the Great Cormorant (Pharacrocorax carbo) and the Black-tailed Gull (Larus crassirostris), respectively, in central and northeastern Japan were studied. Both species from control sites where no avian input occurs show negative values (δ 15N=around -4‰ to -2‰) which are common among higher plants growing under high rainfall regimes. The δ 15N values of P. densiflora show uniformly positive values several years before and after the breeding event, indicating N translocation that moved the absorbed N of a given growth year to tree rings of the previous year while a clear historical value of soil N dynamics was kept intact in the annual rings of P. thunbergii. Long-term N trends inferred from tree rings must take into account tree species with limited translocation rates that can retain actual N annual acquisition.

Original languageEnglish
Pages (from-to)62-70
Number of pages9
JournalIsotopes in Environmental and Health Studies
Volume47
Issue number1
DOIs
Publication statusPublished - Mar 1 2011

Keywords

  • Avian input
  • Birds
  • Isotope ecology
  • Isotope fractionation
  • Nitrogen translocation
  • Nitrogen-15
  • Pines
  • Plants
  • Tree ring

ASJC Scopus subject areas

  • Environmental Chemistry
  • Environmental Science(all)
  • Inorganic Chemistry

Fingerprint Dive into the research topics of 'Differential response of two pinus spp. to avian nitrogen input as revealed by nitrogen isotope analysis for tree rings'. Together they form a unique fingerprint.

Cite this