Nutrient Availability and Other Factors Limiting Microbial Activity in the Blanket Peat

Martin, Nadine; Holding, A. J.

doi:10.1007/978-3-642-66760-2_6

Cited by 44 publications

(32 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…More data, especially from a comparative study, using standardized methods in bogs subject to different levels ofN deposition, are now needed if a valid comparison is to be made. This study* This study Urban & Eisenreich (1988) Hemond (1983) Martin & Holding (1978) …”

Section: Discussionmentioning

confidence: 88%

Nitrogen and Phosphorus Mineralization in Fens and Bogs

Verhoeven¹,

Maltby²,

Schmitz³

1990

The Journal of Ecology

188

111

View full text Add to dashboard Cite

SUMMARY(1) The release of inorganic nitrogen and phosphorus in ten mires in The Netherlands with different vegetation and hydrology was measured by incubating soil in situ in polyethylene bottles at depths of 10 and 25 cm. At the same time, cellulose decomposition was estimated by means of tensile strength loss of in-situ cotton strips.(2) The size of the inorganic N pool was not related to depth, mire type or the presence of a Sphagnum cover. The labile inorganic P pool was significantly larger in Sphagnumdominated bogs than in phanerogam-dominated fens.(3) Nand P mineralization were significantly faster in bogs with a Sphagnum cover than in phanerogam-dominated fens, and faster at 10 than at 25 cm.(4) Cellulose decomposition rates were significantly higher in phanerogam-dominated fens than in Sphagnum-dominated bogs. The depth patterns of the decomposition rates also showed a difference between these mire types: in fens, the rates were relatively low at the surface but increased to a sustained higher value at 10 cm and below; in bogs, the rates were highest at the surface but decreased steeply to very low values.(5) The inverse relation between Nand P mineralization and decomposition is probably due to the chemical properties of Sphagnum litter predominant in bogs. The N-and P-rich protoplasm breaks down and releases nutrients quickly, whereas the bulk of cell walls is decomposed so slowly that not much Nand P is immobilized in microbial tissues.(6) Comparison of N mineralization measured in Dutch bogs with values from other regions found in the literature revealed no indications of an enhanced rate under the conditions of high atmospheric N deposition prevailing in The Netherlands.

show abstract

Section: Discussionmentioning

confidence: 88%

Nitrogen and Phosphorus Mineralization in Fens and Bogs

Verhoeven¹,

Maltby²,

Schmitz³

1990

The Journal of Ecology

188

111

View full text Add to dashboard Cite

show abstract

“…However, N and P fertilisation studies have found contradictory effects on decomposition rates, with some showing no effect (Coulson and Butterfi eld 1978;Richardson 1992, 2003;Chapin et al 2003;Keller et al 2005), some a stimulatory effect (Martin and Holding 1978;Melillo et al 1984;Hunt et al 1988;Berg and Tamm 1994), some a negative effect (McClaugherty and Berg 1987;Prescott 1995;Lockaby et al 1996a,b), and some a mixed effect depending on plant species or wetland type (Aerts and De Caluwe 1997;Hobbie and Vitousek 2000;Keller et al 2006). The P-enrichment gradients created by agricultural runoff in the Everglades are one of the few clear cases of nutrient limitation of decomposition in wetlands (DeBusk and Reddy 1998; Qualls and Richardson 2000).…”

Section: Substrate Quality (Endogenous) Controls Over Decompositionmentioning

confidence: 99%

Ecological Dynamics III: Decomposition in Wetlands

Bridgham

Lamberti

2009

The Wetlands Handbook

View full text Add to dashboard Cite

“…The control of microbial activity is only partly understood, but involves cations (Williams and Crawford, 1984;Gonzalez-Gil et al, 1999;Basiliko and Yavitt, 2001; Thomas and Pearce, 2004), anions (Dise and Verry, 2001;Basiliko and Yavitt, 2001), a carbon source (Martin and Holding, 1978;Thomas and Pearce, 2004), and cation exchange capacity (Thomas and Pearce, 2004) at least. Comparisons between studies, and conclusions about the relative roles of different rate-limiting factors are difficult to draw because different indicators of decay rates, combined with different controlling factors have been investigated.…”

Section: Introductionmentioning

confidence: 99%

“…Williams and Crawford, 1984;Basiliko and Yavitt, 2001; Thomas and Pearce, 2004). Other cation treatments have also included carbon sources (Martin and Holding 1978) and mineral nutrients such as N and P (Williams and Crawford, 1984). Cations have also been added with different anions (e.g.…”

Section: Introductionmentioning

confidence: 99%

“…Soluble and exchangeable cation fractions are those available to plants and microbial communities (Chapin III et al, 2002), but are also linked by geochemical processes to total cation concentration. Basiliko and Yavitt (2001) used soluble cation concentration, Yavitt et al (2005) used the total content and Martin and Holding (1978) based their arguments on exchangeable cations. The ratios of the different fractions vary within and between sites (Gore and Allen, 1956;Waughman, 1980;Kyziol, and Sphagnum species, which dominate the partially decomposed bulk and living layer of many northern bogs, have a CEC (Puustjärvi, 1956;Clymo, 1963) which may be higher than any other species (Painter, 1995).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Geochemistry of three contrasting British peatlands: Complex patterns of cation availability and implications for microbial metabolism

2010

View full text Add to dashboard Cite

of three contrasting British peatlands: Complex patterns of cation availability and implications for microbial metabolism. Geoderma, Elsevier, 2010, 158 (3-4) 2 Abstract Cation availability in peat may limit CH 4 production and microbial activity and thereby impact rates of organic matter accumulation and the chemical character of the peat. We quantify total, soluble, and exchangeable cation concentrations, Exchange Site Saturation Levels (ESSL) and organic fractions in bog-peat profiles and compare these with fen-peat.Total and soluble cation concentrations are not correlated and these and exchangeable cation concentrations are lower in bog than fen peat. In all sites these vary with depth and the distribution patterns of individual cations are unique. This is explained by variation in ESSL, which is negatively correlated with Cation Exchange Capacity (CEC). Total cation concentrations in bog-peat are higher in the top and bottom fractions than in the middle.Soluble concentrations in surface bog-peat are low, because cations are trapped due to low ESSL. This does not occur in fen-peat, with lower CEC and higher ESSL. CEC is related to total organic matter content, not just to Sphagnum, which has been invoked as the explanatory variable of high CEC in peat bogs. There is a complexity in the mechanisms controlling cation availability in peat and we suggest that total, soluble and exchangeable cation fractions need to be taken into account in studies of cation limitation of microbial activity in organic soils.

show abstract

Nutrient Availability and Other Factors Limiting Microbial Activity in the Blanket Peat

Cited by 44 publications

References 0 publications

Nitrogen and Phosphorus Mineralization in Fens and Bogs

Nitrogen and Phosphorus Mineralization in Fens and Bogs

Ecological Dynamics III: Decomposition in Wetlands

Geochemistry of three contrasting British peatlands: Complex patterns of cation availability and implications for microbial metabolism

Contact Info

Product

Resources

About