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Skip to Search Results- 1Barszczewski, Sara Janina Bodnar
- 1Hernández Mora, Ronny A.
- 1Kohler, Monica
- 1Lidong, Zou
- 1Sharp, Iain
- 1Sturm, Ashton B
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Assessing uncertainties related to the use of satellite remote sensing indices to estimate Gross Primary Production
DownloadSpring 2024
Methods to quantify Gross Primary Production (GPP) are classified into two categories: Eddy Covariance techniques (EC) and satellite data-driven. EC techniques can measure carbon fluxes directly, albeit with spatial constraints. Satellite data-driven methods are promising because they overcome...
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Characterizing an in-situ fraction of Photosynthetic Active Radiation product for implementation in the validation of MODIS-derived fraction of Photosynthetic Active Radiation products using continuous-wavelet transforms
DownloadSpring 2020
The goal of this thesis is to address the need to improve forestry monitoring and satellite validation techniques to better contextualize the effects that human-induced climate change is having on tropical dry forests (TDFs). Climate change is expected to change regional and global precipitation...
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Effects of environmental and disturbance gradients on native bee diversity, abundance and composition in Alberta’s prairies
DownloadFall 2017
Native bees provide pollination services to a range of crops, supporting food production and the global economy. They also support the fitness of native flowering plants and terrestrial plant diversity. These functions are delivered by a diverse community of bees with a broad spectrum of life...
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Evaluation of MODIS-LAI products in the tropical dry secondary forest of Mata Seca, Minas Gerais, Brazil
DownloadSpring 2013
Leaf Area Index (LAI) advances scientific knowledge of the role of secondary forests in forest area conservation. MODIS-LAI products provide an alternative, efficient and cost-effective method for measuring LAI in Tropical Dry Forests (TDFs). The performance of MODIS-LAI satellite products in a...
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Fall 2017
Bees are a key component of terrestrial ecosystems and provide valuable ecosystem services to both natural and agricultural landscapes. It estimated that 87.5% of native plants benefit from pollination, including 1/3 of global food crops. Additionally, pollination by bees provides maximized...
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Monitoring the effects of climate change in the Tropical Dry Forest of the Chamela-Cuixmala Biosphere Reserve
DownloadFall 2012
Tropical dry forests are among the most exploited and less conserved of large tropical ecosystems. This study shows advanced remote sensing techniques used to determine the land cover status of the Chamela-Cuixmala Biosphere Reserve (Mexico). Within the context of the primary basins in the...
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Monitoring year-to-year variability in dry mixed-grass prairie yield using multi-sensor remote sensing
DownloadFall 2012
The Normalized Difference Vegetation Index (NDVI) and harvested biomass were compared to assess rangeland productivity (above-ground green biomass or “yield”) in southern Albertan dry mixed-grass prairie. Seasonal trends during the 2009 and 2010 growing seasons were investigated using harvested...
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Simulated Livestock Soil Compaction, Plant Defoliation and Litter Removal Effects on Extracellular Enzyme Activity and Vegetation Across a Moisture Gradient in Southern Alberta, Canada
DownloadSpring 2020
Barszczewski, Sara Janina Bodnar
Preservation of grasslands is vital for the continuation of the numerous ecosystem goods and services (EG&S) provided by these ecosystems, including forage for livestock, nutrient cycling, carbon sequestration and habitat for flora and fauna. All EG&S in grasslands are supported by microbial...
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The response of Tropical Dry Forests to meteorological drought and El Niño Southern Oscillation
DownloadSpring 2020
As a result of economic pressures from agricultural development, timber extraction, tourism and the expansion of cattle ranching, Tropical Dry Forests (TDFs) are considered one of the most threatened and least protected ecosystems in the neotropics. Interacting with these human-induced effects,...