From missing source to missing sink: long-term changes in the nitrogen budget of a northern hardwood forest.
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ABSTRACT:
SUBMITTER: Yanai RD
PROVIDER: S-EPMC3805315 | biostudies-literature | 2013 Oct
REPOSITORIES: biostudies-literature
Publications
From missing source to missing sink: long-term changes in the nitrogen budget of a northern hardwood forest.
Yanai Ruth D RD Vadeboncoeur Matthew A MA Hamburg Steven P SP Arthur Mary A MA Fuss Colin B CB Groffman Peter M PM Siccama Thomas G TG Driscoll Charles T CT
Environmental science & technology 20131003 20
Biogeochemical monitoring for 45 years at the Hubbard Brook Experimental Forest in New Hampshire has revealed multiple surprises, seeming contradictions, and unresolved questions in the long-term record of ecosystem nitrogen dynamics. From 1965 to 1977, more N was accumulating in living biomass than was deposited from the atmosphere; the "missing" N source was attributed to biological fixation. Since 1992, biomass accumulation has been negligible or even negative, and streamwater export of disso ...[more]
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