Ecosystems

, Volume 15, Issue 6, pp 940–957 | Cite as

Do Nutrient Limitation Patterns Shift from Nitrogen Toward Phosphorus with Increasing Nitrogen Deposition Across the Northeastern United States?

  • K. F. Crowley
  • B. E. McNeil
  • G. M. Lovett
  • C. D. Canham
  • C. T. Driscoll
  • L. E. Rustad
  • E. Denny
  • R. A. Hallett
  • M. A. Arthur
  • J. L. Boggs
  • C. L. Goodale
  • J. S. Kahl
  • S. G. McNulty
  • S. V. Ollinger
  • L. H. Pardo
  • P. G. Schaberg
  • J. L. Stoddard
  • M. P. Weand
  • K. C. Weathers
Article

Abstract

Atmospheric nitrogen (N) deposition is altering biogeochemical cycling in forests and interconnected lakes of the northeastern US, and may shift nutrient limitation from N toward other essential elements, such as phosphorus (P). Whether this shift is occurring relative to N deposition gradients across the northeastern US has not been investigated. We used datasets for the northeastern US and the Adirondack sub-region to evaluate whether P limitation is increasing where N deposition is high at two geographic scales, based on N:P mass ratios. Using a model-selection approach, we determined that foliar N for dominant tree species and lake dissolved inorganic N (DIN) increased coincident with increasing N deposition, independent of relationships between foliar N or lake DIN and precipitation or temperature. Foliar P also increased with N deposition across the northeastern US for seven of eight deciduous species, but changed less across the Adirondacks. Foliar N:P therefore declined at the highest levels of N deposition for most deciduous species across the region (remaining nearly constant for most conifers and increasing only for black cherry and hemlock), but increased across all species in the Adirondacks. Ratios between DIN and total P (DIN:TP) in lakes were unrelated to N deposition regionally but increased across the Adirondacks. Thus, nutrient limitation patterns shifted from N toward P for dominant trees, and further toward P for predominantly P-limited lakes, at the sub-regional but not regional scale. For the northeastern US overall, accumulated N deposition may be insufficient to drive nutrient limitation from N toward P; alternatively, elements other than P (for example, calcium, magnesium) may become limiting as N accumulates. The consistent Adirondack foliar and lake response could provide early indication of shifts toward P limitation within the northeastern US, and together with regional patterns, suggests that foliar chemistry could be a predictor of lake chemistry in the context of N deposition across the region.

Keywords

nutrient limitation nitrogen deposition phosphorus northeastern US forest lake Adirondacks 

Supplementary material

10021_2012_9550_MOESM1_ESM.pdf (394 kb)
Supplementary material 1 (PDF 395 kb)

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Copyright information

© Springer Science+Business Media, LLC (outside the USA) 2012

Authors and Affiliations

  • K. F. Crowley
    • 1
  • B. E. McNeil
    • 2
  • G. M. Lovett
    • 1
  • C. D. Canham
    • 1
  • C. T. Driscoll
    • 3
  • L. E. Rustad
    • 4
  • E. Denny
    • 5
  • R. A. Hallett
    • 4
  • M. A. Arthur
    • 6
  • J. L. Boggs
    • 7
  • C. L. Goodale
    • 8
  • J. S. Kahl
    • 9
  • S. G. McNulty
    • 7
  • S. V. Ollinger
    • 10
  • L. H. Pardo
    • 11
  • P. G. Schaberg
    • 11
  • J. L. Stoddard
    • 12
  • M. P. Weand
    • 13
  • K. C. Weathers
    • 1
  1. 1.Cary Institute of Ecosystem StudiesMillbrookUSA
  2. 2.Department of Geology & GeographyWest Virginia UniversityMorgantownUSA
  3. 3.Department of Civil and Environmental EngineeringSyracuse UniversitySyracuseUSA
  4. 4.Northern Research StationUSDA Forest ServiceDurhamUSA
  5. 5.USA National Phenology NetworkTucsonUSA
  6. 6.Department of ForestryUniversity of KentuckyLexingtonUSA
  7. 7.Eastern Forest Environmental Threat Assessment CenterUSDA Forest ServiceRaleighUSA
  8. 8.Department of Ecology & Evolutionary BiologyCornell UniversityIthacaUSA
  9. 9.James W. Sewall CompanyOld TownUSA
  10. 10.Complex Systems Research CenterUniversity of New HampshireDurhamUSA
  11. 11.Northern Research StationUSDA Forest Service, University of VermontBurlingtonUSA
  12. 12.Western Ecology DivisionUS Environmental Protection AgencyCorvallisUSA
  13. 13.Department of BiologySouthern Polytechnic State UniversityMariettaUSA

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