Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 11 of 11 for “"Organic matter accumulation."”.
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Nutrient constraints on plant community production and organic matter accumulation of subtropical floating marshes
… nutrient cycling controls plant productivity and organic matter accumulation. An interesting question is whether increased external nutrient loading can affect the basic processes that lead to peat formation—plant production and organic matter decomposition. I conducted several field studies to …
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The edge effect: lateral habitat ecology of an alluvial river flood plain
… document the impacts of flood disturbances on organic matter accumulation by aquatic primary producers in off-channel environments. We were able to show that the annual flood pulse disturbance was the major force controlling periphyton community biomass, nutrient status, and species …
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The edge effect: lateral habitat ecology of an alluvial river flood plain
… document the impacts of flood disturbances on organic matter accumulation by aquatic primary producers in off-channel environments. We were able to show that the annual flood pulse disturbance was the major force controlling periphyton community biomass, nutrient status, and species …
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In-Stream Hemlock Twig Breakdown and Effects of Reach-Scale Twig Additions on Appalachian Headwater Streams
… hemlock death may subtly change patterns of organic matter accumulation and breakdown, the potentially important effects of hemlock death include changes in large wood inputs, changes in hydrologic regime, and increases in rhododendron cover.
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Litter Decomposition in Created and Adjacent Forested Wetlands of the Coastal Plain of Virginia
… wetlands may be of concern for long-term soil organic matter accumulation, or conversely, may indicate quick recovery of the litter decomposition function. Overall, these findings point out the difficulties involved in using certain functional indicators to compare very young and mature systems.
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An Analysis of Palustrine Mitigation Wetlands in the Virginia Coastal Plain
… due to construction practices and a lack of organic matter accumulation. Better design methods should incorporate the addition of organic amendments, with attempts to minimize soil compaction.
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Predicting the effect of wetland restoration on phosphorus retention, Northwest Minnesota
… Spearman Rank correlation coefficients show soil organic matter and exchangeable calcium correlate highest with PSI. A three-part sequential extraction was performed to determine the dominant form of soil P. Organic P comprised nearly 80% of soil P with the remaining being nearly all Ca-bound P. …
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Linking nitrogen biogeochemistry to different stages of wetland soil development in the Mississippi River Delta, Louisiana
… the Deepwater Horizon oil spill, doubled soil organic matter stimulating net N2 production and nitrate/nitrite uptake. In the actively regressing Wax Lake delta (WLD), soil nutrient chemistry exhibited patterns characteristic of primary substrate development; total nitrogen and organic matter …
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Structure and function of western red cedar and western hemlock forests on northern Vancouver Island
… regular windthrow in the HA type, (ii) a greater accumulation of forest floor organic matter in the CH type, which may lead to detrimental changes in soil physical properties; or (iii) differences in foliar and woody litter quality of the dominant coniferous species, and the way that this affects …
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Feeding the soil to feed the planet: soil health outcomes from novel amendments to residue management
… of soils. Specifically, the application of organic inputs including composts and animal manures can help enhance water holding capacity, organic matter accumulation and crop production. However, the heterogeneous nature of soils and diversity of production systems precludes a single ‘silver …
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Controls on the accumulation of organic matter in the Eagle Ford Group, Central Texas, USA.
The Upper Cretaceous Eagle Ford Formation is an organic rich marine mudrock which outcrops across central Texas. This study documents the chemostratigraphic character of the Pepper and Eagle Ford Formations in central Texas using major and trace elements, organic matter abundance, and the isotopic …