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Wetland Landscapes: Towards An Ecological Vision, Hugo Bekle
Wetland Landscapes: Towards An Ecological Vision, Hugo Bekle
Landscapes: the Journal of the International Centre for Landscape and Language
The extraction and interpretation of ecological information from historical sources has been successfully applied overseas especially in England, Germany and parts of North America. For example, various studies have examined the ecological effects of changes in land-use of the English countryside.
Approaches To Modeling Pathogen And Natural Organic Matter Removals In Slow-Rate Biofilters, Jeffrey Dale Senders
Approaches To Modeling Pathogen And Natural Organic Matter Removals In Slow-Rate Biofilters, Jeffrey Dale Senders
Doctoral Dissertations
There are limited expressions capable of estimating removals in one of the world's oldest and most sustainable water treatment systems: slow-rate biofilters. This research addresses the problem by deriving semi-empirical models that predict pathogen and natural organic matter removals within these natural and engineered sand filters. The more complex pathogen model, or phenomenological colloidal filtration theory (pCFT), applies the 1937 Iwasaki solution to New England pilot scale E. coli observations. The derived pCFT was then calibrated through a series of experimental bench scale phases. Further pCFT validation came by way of a seamless application to multiple microorganisms. Viruses (MS2 as …
Bacterial Biodegradation Of Soluble Crude Oil Hydrocarbons And The Influence Of Protists In Simulated Arctic Seawater And Sea Ice, Heather Ballestero
Bacterial Biodegradation Of Soluble Crude Oil Hydrocarbons And The Influence Of Protists In Simulated Arctic Seawater And Sea Ice, Heather Ballestero
Doctoral Dissertations
With expected increases in vessel traffic, drilling, and exploration for petroleum and natural gas, the potential for an Arctic oil spill is heightened, yet knowledge of contaminant fate and behavior is limited in this environment. With challenging conditions in the Arctic and limited equipment caches, response will be extremely difficult. In freezing conditions, oil may become encapsulated in ice. Understanding biodegradation potential in this environment can dictate response options for spills that occur in Arctic marine waters. The influence of protists on bacterial biodegradation of water accommodated fractions (WAF) of petroleum hydrocarbons is unknown, yet important because it could enhance …
Response Of Tree Growth And Water Use Efficiency To Climate And Nitrogen Deposition In A Temperate Deciduous Forest In The Northeastern Us, Katie Jennings
Response Of Tree Growth And Water Use Efficiency To Climate And Nitrogen Deposition In A Temperate Deciduous Forest In The Northeastern Us, Katie Jennings
Master's Theses and Capstones
Nitrogen (N) deposition and climate change are altering tree growth and may have important consequences for water use in northeastern forests. Intrinsic water use efficiency (iWUE), the trade-off between water loss and carbon fixed during photosynthesis, directly links forest carbon and water cycles. Dendrochronology and stable isotopes (delta13C and delta18O) were used to assess Quercus velutina growth and iWUE within a chronic N deposition experiment (20+ years of fertilization at low- and high-N rates). Fertilized trees exhibited sustained growth enhancement, with the greatest response observed for high-N trees. All fertilized trees improved their iWUE through increased photosynthetic rates, but was …