Aboveground decomposition dynamics in riparian depression and slope wetlands of central Pennsylvania

Hough, Zaneta; Cole, Charles Andrew

doi:10.1007/s10452-008-9198-3

Cited by 13 publications

(12 citation statements)

References 46 publications

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“…Wetland DOC concentrations remained constant in the mixed basins and were too variable to detect a seasonal difference in concentration in the crystalline basins (Fig. 3), and suggest that carbon turnover is more continuous than in upland areas where soil moisture limits microbial activity (Hough and Cole 2009). Where streams and wetlands are linked, the spring pulse of DOC into streams demonstrates a seasonal increase in hydrologic flow-through between them.…”

Section: Links Between Slope Wetlands and Headwater Streamsmentioning

confidence: 87%

Influence of Bedrock Geology on Water Chemistry of Slope Wetlands and Headwater Streams in the Southern Rocky Mountains

2011

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We characterized the water chemistry of nine slope wetlands and adjacent headwater streams in Colorado subalpine forests and compared sites in basins formed on crystalline bedrock with those formed in basins with a mixture of crystalline and sedimentary bedrock. The pH, Ca 2+ , Mg 2+ , NH 4 + , acid neutralizing capacity, and electrical conductivity of wetland porewater and streamwater were higher in the basins with mixed geology. Bryophyte cover was higher in lower pH, crystalline basins, and vascular plant cover was higher in the mixed bedrock basins. On average, wetland porewater had lower pH and higher concentrations of dissolved organic carbon (DOC) and nitrogen and several other ions than streamwater; however, because discharge from these small wetlands is low, their direct influence on stream solute concentrations was generally undetectable. Dilution altered stream solute concentrations during peak flow in both basin types, but had little effect on wetland chemistry. In contrast to other solutes, the concentration of DOC in streams increased marginally during peak runoff and its concentration in wetland porewater was stable throughout the year. These findings further knowledge of the influence of watershed characteristics on wetland and stream chemistry and will inform future decisions regarding conservation and management in headwater basins.

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Section: Links Between Slope Wetlands and Headwater Streamsmentioning

confidence: 87%

Influence of Bedrock Geology on Water Chemistry of Slope Wetlands and Headwater Streams in the Southern Rocky Mountains

2011

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“…The importance of pH is supported by Hough & Cole (2009), who found soil pH to influence reed canary grass decomposition rate. The model also shows a direct relation among decomposition and AT, which agrees with the literature.…”

Section: Reed Canary Grassmentioning

confidence: 91%

Influence of environmental parameters on litter decomposition in wetlands in West Virginia, USA

Gingerich

Merovich

Anderson

2014

Journal of Freshwater Ecology

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Plant litter decomposition varies by species and environmental conditions. To study environmental controls of decomposition, we measured plant litter decomposition rates in six wetlands located in West Virginia, USA. Four common wetland litter species were used: broadleaf cattail (Typha latifolia L.), common rush (Juncus effusus L.), brookside alder (Alnus serrulata (Ait.) Willd.), and reed canary grass (Phalaris arundinacea L.). A fifth litter type was created from a mix of common rush, brookside alder, and reed canary grass. Litter bags were collected over two years, from December 2007 to December 2009, and environmental variables near litter bags were measured every two weeks. Nine environmental parameters and one study parameter were then used to construct and test the ability of 22 a-priori models to predict the decomposition rate of each litter type. The environmental variables that most influenced and, therefore, best predicted decomposition rate varied among litter types. Brookside alder decomposition rate was best predicted by soil temperature (ST), water pH (WPH), and the number of transitions between flooded and exposed conditions (FET); reed canary grass decomposition rate was best predicted by air temperature (AT), WPH, and ST; common rush decomposition rates were best predicted by AT; broadleaf cattail decomposition rate was best predicted by hydroperiod (HP) and FET; and the mixed litter decomposition rate was best predicted by AT and WPH. Overall, AT, ST, and WPH were directly related to decomposition rate, while HP was inversely related. The FET was directly related to decomposition rates of common rush and broadleaf cattail and inversely related to the decomposition rate of brookside alder. The study of litter decomposition helps reveal the link between environmental conditions and wetland function.

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“…3−5). At the first phase, an initial rapid decrease in nutrient (N, P and K) concentration was observed and the subsequent phase was immobilization of nutrients (Herra´ez and Ferna´ndez Marcos 2000; Guo and Sims 2002;Moore et al 2006;Alvarez et al 2008;Hough and Cole 2009). The initial rapid decrease of nutrients concentration may be ascribed to the loss of the soluble forms of nutrients at the initial stages of decomposition (Mahmood et al 2007) and a slower release of nutrients at the later stages of litter decomposition governed by refractory components (Schlesinger 1985;Herra´ez and Ferna´ndez Marcos 2000).…”

Section: Nutrients In Leaf Littermentioning

confidence: 95%

Nutrient dynamics associated with leaf litter decomposition of three agroforestry tree species (Azadirachta indica, Dalbergia sissoo, and Melia azedarach) of Bangladesh

Hossain

Siddique

Rahman

et al. 2011

Journal of Forestry Research

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Azadirachta indica A. Juss, Dalbergia sissoo Roxb., and Melia azedarach L. are little studied species in nutrient return capabilities from leaf litter decomposition to maintenance of the soil fertility despite their importance in agroforestry practices of Bangladesh. A leaf litter decomposition experiment was conducted using a litterbag technique to assess the nutrient return efficiency of these species. The decomposition rate of leaf litter was highest for M. azedarach and lowest for D. sissoo. Rainfall and temperature of study sites showed a significant (p<0.05) positive relationship with the rate of leaf litter decomposition. The highest decay constant was observed for M. azedarach (6.67).Nitrogen and Phosphorus concentration in leaf litter showed a decreased trend sharply at the end of the first month, whereas rapid decrease of Potassium concentration was reported within 10 days. Conversely, higher concentration of nutrient was observed at the later stages of decomposition. All three species showed a similar pattern of nutrient release (K > N > P) during the decomposition process of leaf litter. Among the studied species, D. sissoo was best in terms of N and P return and A. indica was best in terms of K return.

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Aboveground decomposition dynamics in riparian depression and slope wetlands of central Pennsylvania

Cited by 13 publications

References 46 publications

Influence of Bedrock Geology on Water Chemistry of Slope Wetlands and Headwater Streams in the Southern Rocky Mountains

Influence of Bedrock Geology on Water Chemistry of Slope Wetlands and Headwater Streams in the Southern Rocky Mountains

Influence of environmental parameters on litter decomposition in wetlands in West Virginia, USA

Nutrient dynamics associated with leaf litter decomposition of three agroforestry tree species (Azadirachta indica, Dalbergia sissoo, and Melia azedarach) of Bangladesh

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