Patterns of plant decomposition and nutrient cycling in natural and created wetlands

  • Howarth R
  • Marino R
  • Roper J
 et al. 
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Abstract

Functional assessment is important to determine whether restored and created wetlands are similar to natural ones. We investigated ecosystem processes (decomposition, biomass production) and some aspects of biogeochemical cycles (plant uptake of nitrogen and phosphorus, litter N immobilization) in a population of natural and created (mitigation) wetlands. Our goals were to quantify ecosystem processes and compare some biological and physical characteristics, in order to assess the relative performance of created wetlands. The biological and biogeochemical characteristics of the natural and created sites were substantially different. Decomposition rates for both in-situ and control litter and tissue nutrient concentrations were higher in the natural wetlands, with final decomposition rate constant values (k (d(-1))) averaging 0.009 for natural and 0.006 for restored sites over approximately a one-year incubation period. Aboveground biomass production was also significantly higher in the natural sites, averaging 347 g m(-2) compared to 209 g m(-2). Concentrations of soil percent organic carbon., percent nitrogen, and plant available P (mu gP g soil(-1)) were significantly higher in the natural sites. Lower soil nutrient content in the created wetlands appears to propagate through the system resulting in low tissue nutrient levels, less biomass accumulation, and slower rates of decomposition.

Author-supplied keywords

  • 12
  • 146-155
  • 17
  • 2
  • 2 tg
  • 2007
  • 2013
  • 3
  • 7 million t
  • 93
  • Acetylene inhibition
  • Activated sludge
  • Agricultural soils
  • Ambystomatid salamanders
  • Author keyword
  • Bacteria
  • Biodegradability
  • Biofilm
  • Carbon cycling
  • Climate
  • Cold climate
  • Constructed wetland
  • Constructed wetlands
  • Created wetlands
  • Dairy waste
  • Denitrification
  • Denitrifying bacterial community structure
  • Detritus
  • Dissimilatory nitrate reduction to ammonium
  • Dissolved O2 concentration
  • Dissolved nitrous oxide
  • Ecosystem
  • Ephemeral wetlands
  • Eutrophication
  • Functional diversity
  • Fungi
  • Greenhouse gas emission
  • Humidity
  • Hydrologic pulsing
  • Inhibition
  • Leachates
  • Linkage between community structure and activity
  • Macrophytes
  • Models
  • N2O emission
  • N2O fluxes
  • N2O production
  • N2O residence time
  • Nitrate
  • Nitric oxide
  • Nitrification
  • Nitrifier-denitrification
  • Nitrogen
  • Nitrogen Cycle
  • Nitrogen Isotopes
  • Nitrogen Isotopes: analysis
  • Nitrogen Isotopes: metabolism
  • Nitrogen removal
  • Nitrous Oxide
  • Nitrous Oxide: analysis
  • Nitrous Oxide: metabolism
  • Nitrous oxide
  • Nutrient loading
  • Nutrients
  • Olentangy River Wetland Research Park
  • Organic carbon
  • Oxygen demand
  • Peak-biomass
  • Periphyton
  • Phosphorus
  • Plant community development
  • Plant species richness
  • Pool-breeding amphibians
  • Post-construction monitoring
  • Potential denitrification
  • Potential denitrification rates
  • Potential nitrification rates
  • Research trend
  • Restoration
  • Riparian wetland
  • Seasonal depressions
  • Sediment redox potential (Eh)
  • Soil
  • Soil Microbiology
  • Soil profile
  • Soil properties
  • Soil: chemistry
  • Soils
  • Spatial heterogeneity
  • Substrate-induced respiration (SIR) inhibition
  • Suspended solids
  • Swamp forest
  • Temperature
  • Theoretical
  • Total microbes
  • Vegetated filter strip
  • Vernal pool creation
  • Wastewater treatment
  • Water quality
  • Water regimes
  • Web of Science
  • Wetland creation
  • Wetland mitigation
  • Wetlands
  • Wood frogs
  • a
  • abundance
  • acetylene-inhibition
  • ammonium
  • anaerobic oxidation of methane
  • and nitrogen
  • and the
  • and water assessment tool
  • and zhu
  • aom
  • biogeochemistry
  • biomass production
  • bioturbation
  • bulk density
  • burton
  • calcium ammonium nitrate
  • carbon source
  • citation
  • compensatory
  • conservation
  • conservation effects assessment project
  • constructed
  • constructed wetland
  • cow-slurry
  • created wetlands
  • d
  • decomposition
  • denitrification
  • denitrifier communities
  • dissimilatory nitrate reduction to
  • dissolved gas measurement
  • diversity
  • dnra
  • drainage water
  • dredge material
  • ecosystem functioning
  • emissions as affected by
  • et stratton
  • exceeds 85 tg
  • g
  • gaseous n loss
  • gasses
  • genes
  • greenhouse
  • greenhouse gas
  • gulf of mexico
  • j
  • l
  • land use change
  • lysimeter
  • madani
  • micro-aggregation
  • mississippi
  • mitigation
  • n 2 o fl
  • n20
  • natural prairie
  • nitrate
  • nitrification
  • nitrite
  • nitrogen losses
  • nitrous oxide
  • nitrous oxide and methane
  • nitrous-oxide reductase
  • now
  • nutrient
  • nutrient cycling
  • nz
  • of n
  • organic matter
  • oxyde nitreux dissous dans
  • paddy soil
  • particle size distribution
  • pedosphere
  • q
  • roper
  • simple me
  • soil
  • spartina alterniflora
  • structural equivalency
  • the annual world consumption
  • thode pour doser l
  • tubifex
  • united states consumed 11
  • uxes
  • vegetation survey
  • w
  • water
  • wetland dynamics
  • wetland soils
  • x
  • xing
  • xiong
  • z

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Authors

  • Robert W. Howarth

  • Roxanne Marino

  • Jennifer D Roper

  • David L Burton

  • Ali Madani

  • Glenn W Stratton

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