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 “"primary succession"”.
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The Influence of Fluvial Geomorphic Processes on Spatial Patterns of Forest Primary Succession
… investigated spatial patterns of tree species in primary successional forests along depositional point bars at river bends of the Bogue Chitto River, Louisiana, USA and on nine additional rivers in the southeastern US. I hypothesized that geomorphic processes associated with river planform cause …
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The Contribution of Spawning Pacific-salmon to Nitrogen Fertility and Vegetation Nutrition during Riparian Primary Succession on an Expansive Floodplain of a Large River
… vegetation communities are mosaics of succession stages caused by erosion/redeposition as river channels migrate throughout their floodplains. Typically, plants colonizing alluvial deposits are severely N-limited, but N accumulates during succession, and this process determines long …
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The Contribution of Spawning Pacific-salmon to Nitrogen Fertility and Vegetation Nutrition during Riparian Primary Succession on an Expansive Floodplain of a Large River
… vegetation communities are mosaics of succession stages caused by erosion/redeposition as river channels migrate throughout their floodplains. Typically, plants colonizing alluvial deposits are severely N-limited, but N accumulates during succession, and this process determines long …
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Nitrogen isotope variation in the environment: Implications for interpretation
… in a wide range of plants growing in early primary succession sites (as low as -22.3 ), which could not be accounted for by any abiotic or biotic factor or significantly depleted N source. The absence of any measurable driver of depletion suggested a universal fractionating mechanism which …
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On the ecology of Acer circinatum Pursh: a study of factors that affect the distribution of a small hardwood tree within oldgrowth forests in southwestern British Columbia, Canada
… probably a relic of vine maple dominance during primary succession. On a smaller scale light availability and potentially former light availability influenced vine maple cover and occurrence. Ground water levels, soil properties and slope inclination had no influence on vine maple distribution. …
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Response of Cynodon dactylon (L.) Pers. to ammonium and nitrate nutrition
Plants that come early in succession predominantly prefer_ ammonium form of nitrogen than nitrate. The hypothesis that Cynodon dactylon (L.) Pers., a grass in the primary succession stage would respond well when supplied with ammonium than nitrate fertiliser was tested. Seedlings of Cynodon …
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Modelling hydrologic system change in a paraglacial catchment in the Northern Rocky Mountains
… to climatic warming, and the rates of vegetation succession are often unable to keep up with the rate of warming. Basin scale analyses of glacial recession on streamflow are then confounded by ecohydrologic dynamics created by primary succession and the associated increase in evapotranspiration. …
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The effects of temperature and moisture on alpine microbial processes across a gradient of soil development
… moisture and nutrient availability are primary controls of microbial abundance and activity, it is likely that microbial linkages exist between global change and ecosystem-level consequences of global change in alpine regions. Deglaciation in high-elevation regions incrementally exposes …
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Cottonwood Establishment in a Gravel-Bed River
… conceptual model posits that hydrochory is the primary establishment mechanism creating recruitment bands and patches of seedlings. Wind-dispersed seeds fall on the water, are incorporated into the drift, and are deposited by receding floodwaters along shallow shorelines, where underwater …
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Cottonwood Establishment in a Gravel-Bed River
… conceptual model posits that hydrochory is the primary establishment mechanism creating recruitment bands and patches of seedlings. Wind-dispersed seeds fall on the water, are incorporated into the drift, and are deposited by receding floodwaters along shallow shorelines, where underwater …
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The colonisation by vegetation of colliery spoil heaps in the Forest of Dean, Gloucestershire, and implications for biodiversity management
… 'E' diversity indices were calculated.<br/><br/>Succession was measured using a series of 'expected trends'. Species-richness increased over time until 60 years since disturbance, but the species-evenness pattern did not appear to be affected by time or pH. The bryophyte layer colonised plots …