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Title: Rooting depth distribution and nitrogen acquisition using 15N tracer, Barrow, Alaska, 2013

Permafrost thaw and degradation may lead to altered thickness of the active soil layer and a changing distribution of plant-available nutrients throughout the soil, but little is known about the nutrient acquisition strategies of dominant tundra plant species. We conducted an 15N isotope tracer experiment to assess the vertical distribution of nutrient acquisition among three dominant species representing important plant functional types (PFTs) on the Barrow Environmental Observatory (BEO) in Barrow, Alaska. We found that vertical patterns of root distribution and nutrient acquisition varied among plant species, and that root density may not entirely explain patterns of nutrient acquisition for all species.
Authors:
Publication Date:
OSTI Identifier:
1333932
DOE Contract Number:
DE-AC05-00OR22725
Resource Type:
Dataset
Data Type:
Numeric Data
Research Org:
Next Generation Ecosystems Experiment - Arctic, Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (US);
Sponsoring Org:
USDOE Office of Science (SC), Biological and Environmental Research (BER)
Country of Publication:
United States
Availability:
ORNL
Language:
English
Subject:
54 Environmental Sciences ngee; ngee-arctic; root traits