4 edition of Water retention and drainage in the forest floor organic layer under upland black spruce found in the catalog.
Water retention and drainage in the forest floor organic layer under upland black spruce
Christopher Mark Jessee
by National Library of Canada = Bibliothèque nationale du Canada in Ottawa
Written in English
|Series||Canadian theses = Thèses canadiennes|
|The Physical Object|
Picea glauca (Moench) Voss. White Spruce. Pinaceae -- Pine family. Hans Nienstaedt and John C. Zasada. White spruce (Picea glauca), also known as Canadian spruce, skunk spruce, cat spruce, Black Hills spruce, western white spruce, Alberta white spruce, and Porsild spruce, is adapted to a wide range of edaphic and climatic conditions of the Northern Coniferous Forest. Saturated soils support lower mineralization rates, therefore organic layers store relatively more carbon and nitrogen than adjoining upland soils, and primary productivity is generally lower. Saturated soils also have implications for the ability of the riparian area to “buffer” streams from inputs of water and nutrients.
Silins, U. & Rothwell, R. L. Forest peatland drainage and subsidence affect soil water retention and transport properties in an Alberta peatland. Soil Sci. Soc. of Am. J. 62, – (). Site 1. On the east side of the park with the kudzu, you set up ten 1m x 1m plots on the forest floor. In each plot you count the number of individuals of the rare plant. Site 2. On the west side of the park without the kudzu, you set up ten 1m x 1m plots of the forest floor. In each plot you count the number of individuals of the rare plant.
Fig. 1. Locations of the study plots with all av.. Table 1. Descriptive statistics of the main used.. Laboratory analyses. Once water is absorbed, this kind of soil holds water longer and does not drain well. Large particles that are loosely spaced, such as sand or silt, allow water to move through the soil and drain.
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The high water retention of hummock-forming Sphagnum species minimizes soil moisture fluctuations and might protect forest floor organic matter from burning during wildfire.
We hypothesized that. The depth of burning of the surface organic layer is a widely used measure of fire and burn severity in black spruce forests (Miyanishi and Johnson,Greene et al.,Kasischke et al.,Boby et al., ), and is one of the factors that will be important in determining the rate of transition from black spruce to other forest types Cited by: 7.
Sphagnum spp. is a poor growth substrate because it causes water retention at the surface of the organic soil Partial cuts-Black spruce-Forest floor. status of black spruce layers, natural. We present (i) measured data on organic layer and mineral soil ( cm) C stocks in 18 old-growth and disturbed high-boreal black spruce stands in Labrador, Canada; (ii) a comparison of field.
Retention of rain-water by the forest floor also has large geomorphological, hydrological and environmental effects; the amount of water stored in the forest floor is the key factor to predict a potential forest fire (Blow,Chrosciewicz, ), the forest floor is an important source of water for plants (Sharratt, ), and evaporation Cited by: Moisture cycles of the forest floor organic layer (F and H layers) during drying and water content of a black spruce forest floor ( m depth) were assessed during the growing season.
Paludification, the accumulation over the mineral soil of poorly decomposed organic matter mainly originating from Sphagnum spp., transforms black spruce (Picea mariana) boreal forests into forested peatlands in the prolonged absence of fire, which diminishes forest -severity wildfires reset this process by burning the soil organic layer (SOL) and reinitiating forest.
Fire–induced changes to boreal landscapes have been documented in the literature. For example, in interior Alaska, fire has been shown to increase the hydrophobicity of soils in black spruce forests with a feather moss–dominated forest floor, which may lead to reductions in infiltration and increases in surface runoff (O'Donnell et al., ).
Michael Starr's 70 research works with 2, citations and 3, reads, including: Changes in forest floor and mineral soil carbon and nitrogen stocks in a boreal forest after clear-cutting and. The study area covers aboutkm 2 in the province of Quebec in eastern Canada (Fig.
1a). It is in the black spruce–feather moss bioclimatic domain, which is found in the Boreal Shield ecozone in the south and the Hudson Plains ecozone in the north (Ecological Stratification Working Group, ).The climate varies from subhumid continental to subpolar and is characterized by long.
The focus of our ecological work is on building the Water Retention Landscape as a far-reaching holistic and regenerative approach for ecosystem ’s a model for natural and decentralized water management, a basis for reforestation, horticulture and agriculture in regions threatened by desertification, and is part of a comprehensive model for sustainability on a large scale that.
Silins U, Rothwell RL. Forest peatland drainage and subsidence affect soil water retention and transport properties in an Alberta peatland. Soil Sci. Soc. 62 (4): Crossref, Google Scholar. The retention of this water in swamps reduces the potential for flooding in downstream areas and allows nutrients to be cycled into aquatic plants and stored as organic material.
When the swamps are drained, these nutrients are released by the oxidation of the organic materials and are mostly lost through the drainage system into watersheds. This is because high water retention by hummock mosses inhibits both the initiation and downward propagation of combustion (Benscoter et al., ).
Across c. 80 black spruce forests in Alaska, the area of unburned Sphagnum hummocks was a strong predictor of how much organic soil escaped burning at a stand scale (Shetler et al., ). Peat plateaus with stunted black spruce-lichen forest, collapse scars with sedges and mosses, and fens with black spruce, larch, dwarf birch, rap sedges, and mosses are widespread on level terrain, where water tables are usually high and organic materials have accumulated to varying depths (Ecosystem Classification Group, ; Figure 1).
Trembling aspen covers a large geographic range in North America, and previous studies reported that a better understanding of its singular influence on soil properties and processes is of high relevance for global change questions. Here we investigate the potential impact of a shift in aspen abundance on soil carbon sequestration and soil carbon stability at the continental scale by.
Jonathan A. O'Donnell, Vladimir E. Romanovsky, Jennifer W. Harden, A. David McGuire, The Effect of Moisture Content on the Thermal Conductivity of Moss and Organic Soil Horizons From Black Spruce Ecosystems in Interior Alaska, Soil Science, /SS.0bec4a7f8,12, (), ().
wetness is a perched water table that generally forms above an impermeable soil layer. Benefits of drainage in relation to healthy soil and plant life Surface Drainage Benefits that occur due to the controlled removal of surface water by surface drainage systems are: 1.
Erosion control. Removal of surface water. (b) In the discontinuous permafrost zone, the organic soil layer deepens and extends below the active layer; trees occur primarily on permafrost peat plateaus where permafrost is warmer, thinner, and – under a changing climate – increasingly vulnerable to thaw and ground surface subsidence, leading to waterlogging and forest loss.
It's worthwhile to prepare and test the various blends of sand and peat that you have chosen to determine if you can achieve the proper water retention and drainage rate from the blend. Once you've determined the best blending ratio, routinely monitor the blend for organic matter and particle size to verify consistency.
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Even though It is not the deepest canyon in the world (Kali Gandaki Gorge in Nepal is much deeper), the Grand Canyon is known for its visually overwhelming size and its intricate and.The Arctic and Subarctic zones are expected to sustain the greatest impact in the wake of global climate change.
Because of the vast acreage in Alaska and the potentially high C storage capacity in the boreal forest zone, an understanding of black spruce dominated sites is important for both ecological modeling and for land management. Very little information exists regarding the. Results. In the absence of drainage, the peatland followed a typical pattern of post-fire recovery 6,14 (Figure 1; cycle A).After wildfire, the specific yield remained high ( within the top m of the profile) 14, maintaining a high water table position (maximum water table depth of m during growing season).This likely promoted the observed establishment of a moss-dominated.