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 15 of 15 for “"late-successional"”.
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Investigations of Bromus tectorum: restoration strategies and interactions with arbuscular mycorrhizal fungi
… fungi (AMF) inoculum. Bromus tectorum and early successional plant species were negatively responsive and late successional species were positively responsive to field AMF inoculum, while commercial inoculum was ineffective. I compared mycorrhizal inoculum potential of field soils from beneath …
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Urban Restoration Ecology: Investigating environmental change, ecological function, and enrichment planting
… provide suitable conditions for establishment of late-successional plant species. Further, what timeline does this occur along and what specific conditions drive native plant regeneration? To answer these questions a chronosequence of restored urban temperate rainforests aged 3 to 70 years was …
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WHAT PREDICTS TERRESTRIAL INVERTEBRATE SUBSIDY USE BY BROOK TROUT (SALVELINUS FONTINALIS) IN HEADWATER STREAMS?
… in terrestrial invertebrate biomass in early and late successional habitats. To test this prediction, I measured terrestrial invertebrate biomass, input to streams, and use by resident brook trout in 12 first and second-order watersheds in northern New Hampshire, USA, representing a range of early …
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WHAT PREDICTS TERRESTRIAL INVERTEBRATE SUBSIDY USE BY BROOK TROUT (SALVELINUS FONTINALIS) IN HEADWATER STREAMS?
… in terrestrial invertebrate biomass in early and late successional habitats. To test this prediction, I measured terrestrial invertebrate biomass, input to streams, and use by resident brook trout in 12 first and second-order watersheds in northern New Hampshire, USA, representing a range of early …
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Mechanisms Promoting Spatial and Temporal Variability in Plant Defense
… altissima). Within replicate early- and late-successional fields, I quantified the spatial structure of herbivore damage and goldenrod resistance, tolerance, and fitness traits, and assessed whether the spatial structure of defense was correlated with edaphic conditions and neighboring …
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Thresholds for sustainable regeneration in urban restoration plantings in Hamilton City, New Zealand
… dispersal limitation for several key mid to late successional forest species an experiment was also undertaken to investigate broadcast seeding as a method to reintroduce trees with large seeds and fleshy fruits into established early successional vegetation. Seed rain, soil seed banks (fern …
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Managing open habitats for species conservation : the role of wild ungulate grazing, small-scale disturbances, and scale
… open habitats. We studied the effect of wild ungulates in a 160 ha game preserve in NE Germany in three successional stages (i) Corynephorus canescens-dominated grassland, (ii) ruderal tall forb vegetation dominated by Tanacetum vulgare and (iii) Pinus sylvestris-pioneer forest over three years. …
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Abiotic and Biotic Factors Shaping Plant-Microbe Interactions
… three distinct ecological communities across a successional gradient differentially influenced plant defense strategies against herbivores. We found evidence that soil microbes from mid and late successional habitats increased plant capacity to reduce herbivore damage (resistance) but did not …
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Effects of forest disturbance on shredder production in headwater streams
… in shredder growth patterns between early versus late successional leaf species. Pycnopsyche growth was not studied, but Pycnopsyche may be more capable than the other shredders of exploiting fast-processing, early successional leaf species. Pycnopsyche production was greatest in streams having …
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The red imported fire ant, Solenopsis invicta, in early-successional coastal plain forests: tests of distribution and interaction strength
… is an abundant and aggressive component of early-successional communities in the southeastern United States. After disturbance, it rapidly invades new habitats, and once there, it has strong competitive and predatory effects on the existing arthropod community. In upland coastal plain pine forests …
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Effects of Silvicultural Management on Coast Redwood Forest Composition, Density and Structure in Santa Cruz and San Mateo Counties
… and quadratic mean diameter (QMD) were calculated from the "snapshot" data and stratified by species groups and diameter ranges/canopy layers.</p> <p>Forest components were derived from the dataset by selecting specific groups within the forest as defined by the California Forest Practice …
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Functional analysis of secondary tropical dry forests in a region of the Colombia, Caribbean
… using a stratified design considering different successional stages along an environmental gradient in a region of the Caribbean coast of Colombia and a multi-trait approach to study functional diversity at three scales: species, communities and landscape. The analysis of the variation in …
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Using remote sensing to track resilience of subtropical rainforests against fires and tropical cyclones
… feedbacks in Hong Kong. When early successional vegetation is more fire susceptible than late-successional closed-canopy forests, positive fire-vegetation feedbacks are created. These feedbacks can then form “fire traps” that undermine restoration of degraded landscapes. Here, fire …
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Biogeochemical Investigations in Old Growth and Disturbed Forest Sites at Mount Kilimanjaro
… tension, rainfall, throughfall, litter percolate and soil solution were determined on twelve study sites in mature forest, secondary forest and elder clearings between 2100 and 2300 m a.s.l. on the southwestern slopes of the mountain. The soil water tension was monitored from May 2000 to …
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Long-Term Disturbance Histories Of Managed And Natural Mixed-Hardwood Forests Of Central Indiana
… changes in forest composition and structure related to changes in disturbance regimes. Reduced frequency and severity of disturbance events has allowed for the ingrowth of shade-tolerant, mesophytic species into forest understories; the result is shifting species compositions and changes in …