GEOG 566

         Advanced spatial statistics and GIScience

Archive for June, 2017

June 12, 2017

Final Project: “Spatial Relationships of Vegetation for Restored and Reference Salt Marshes (Salmon River Estuary, Oregon)

Filed under: Final Project @ 2:32 pm

My Spatial Problem Blog Post Contents: A description of the research question that you are exploring. Salmon River is one of the smallest estuaries on the northern Oregon coast (800 ha), with the largest proportion of tidal marsh (400 ha) for any Oregon estuary. It borders Tillamook and Lincoln counties, and is designated as an […]

Nitrate Concentrations in Space and Time and how they relate to Red Alder Cover in different watersheds

Filed under: 2017,Final Project @ 10:38 am

My Spatial Problem Blog Post (Revised) By: Nicole Feiten Research Description I am exploring aquatic chemistry among 10 streams in the Oregon Coast range. I will be running anion analysis over the period of 1 year sampling monthly. These streams are divided into three categories, three are located East of Mary’s Peak in the Rock […]

June 11, 2017

My Spatial Problem: Revised

Filed under: Final Project @ 11:48 pm

I am interested in the understanding how mammals have responded to changes in their habitat through time and how the distribution of resources on the landscape structures small mammal communities, historically and today. I predominantly utilize stable isotope analysis of carbon and nitrogen to evaluate niche dynamics of rodents along elevation gradients and through time, […]

Patterns of socio-demographic and spatial variables from survey responses about attitudes regarding flood-safety in neighborhoods

Filed under: Final Project @ 10:56 pm

1. Research question. For this problem I want to answer: How socio-demographic and spatial variables explain patterns of survey responses about attitudes regarding flood-safety in neighborhoods?   2 Description of the dataset. The dataset for the study has the following characteristics: Data is obtained from Household voluntary survey Convenience sampling. Households located within the 100 […]

Beetle outbreaks and wildfire: overlapping in time and space

Filed under: Final Project @ 10:53 pm

Overview Often landscape scale disturbances are singular events, but contemporary disturbance regimes are demonstrating that large-scale disturbances can overlap in time and space.  The spatial configuration an initial disturbance may influence the process and subsequent spatial configuration of a secondary disturbance, such as beetle outbreak followed by fire.  The cumulative effects of sequential disturbances could […]

Final Project: Patterns in NDVI fields over time and compared to biomass

Filed under: Final Project @ 10:05 pm

1. The research question that you asked. Spatial patterns in disease spreading in agriculture are important to understand. For example, what causes the infection and how to avoid further spreading. Originally, the idea was to study the Red Blotch disease in vineyards. But due to delays there was no data. With the same goal in […]

Final Project: Assessing Forest Structure Parameters of Tropical Forest Based on Unmanned Aircraft System (UAS) Visual Imagery Data

Filed under: 2017,Final Project @ 7:36 pm

Background: The emission of Carbon Dioxide (CO2) is one of the greatest factors causing climate change. Forests, as the largest terrestrial carbon reservoir have an important role to reduce CO2 emissions and prevent climate change. Considering the important role of forests to reduce CO2 emissions and prevent climate change, it is necessary to manage forests […]

Final Project: evaluating interspecific competition between wolves and cougar in northeast Oregon

Filed under: Final Project @ 5:48 pm

Background & Research Question The research I am conducting is focused on understanding and quantifying the competitive interactions between two apex predators, wolves and cougar. Populations of large carnivores have been expanding across portions of their historical range in North America, and sympatric wolves (Canis lupus) and cougars (Puma concolor) share habitat, home ranges, and […]

Analyzing Hydrologic Patterns in a Single Basin in the Oregon Coast Range

Filed under: Final Project @ 5:13 pm

Introduction My master’s thesis involves quantifying geomorphic change in streams after the addition of a large wood jam for salmon habitat restoration purposes. Large wood has been shown to have many positive effects on salmon habitat, including creating pools and backwater areas that are essential for juvenile salmon survival. This past summer, I surveyed seven […]

Final Project: Understory Vegetation Response in Ponderosa Pine Forests

Filed under: 2017,Final Project @ 1:41 pm

Research Question This quarter, I explored the following question: how does understory vegetation percent cover respond to ponderosa pine canopy cover and other environmental variables across Deschutes County? This question is a substitute for my thesis research, which takes place in the Willamette Valley. I substituted Deschutes County for the Valley due to the lack […]

June 9, 2017

Final Project Post

Filed under: Final Project @ 9:39 pm

Revised Spatial Problem During this class I worked on two separate projects. Project 1: After much exploration of data and problems associated with my original spatial problem, I have slightly revised my questions. I originally wondered if I could obtain information about some of the factors that might influence the presence of 3 amphibian diseases […]

Final project: Can remotely-sensed sea surface temperature and chlorophyll-a concentration predict the presence of blue whales in New Zealand’s South Taranaki Bight region?

Filed under: Final Project @ 4:59 pm

Research Question My research focuses on the ecology of blue whales (Balaenoptera musculus brevicauda) in the South Taranaki Bight region (STB) of New Zealand (Figure 1). Despite the recent documentation of a foraging ground in the STB (Torres et al. 2015), blue whale distribution remains poorly understood in the southern hemisphere. The STB is New […]

June 5, 2017

My Spatial Problem Revised

Filed under: 2017,Final Project @ 1:03 pm

1) The Question I asked: Does site aspect play a significant role in radar backscatter after processing? 2) Description of the Dataset The backscatter dataset comes from the Sentinel-1 satellite constellation, which is equipped with C-band radar and has global coverage. The return time for a given area is 6-12 days, with a ground resolution […]

June 2, 2017

Processing Multispectral Imagery from an Unmanned Aerial Vehicle For Phenotyping Seedlings in Common Garden Boxes: Part 2

Filed under: 2017,Tutorial 2 2017 @ 1:52 pm

  Consolidating Spectral Variables – PCA Before any comparisons could be made between spatial and spectral variables in the study, I needed to look a bit closer at each set of variables. Retaining a large number of spectral variables in my models would make them much more complicated, therefore it would be advantageous to reduce […]

June 1, 2017

Processing Multispectral Imagery from an Unmanned Aerial Vehicle For Phenotyping Seedlings in Common Garden Boxes: Part 1

Filed under: Tutorial 1 2017 @ 6:11 pm

Background A total of three common garden sites were imaged by flying a UAV (Tarot 810 hex-copter) over the boxes at 15m AGL. All three sites are within the Kaibab National Forest area near Jacob Lake, Arizona, USA (Figure 1). The aircraft carried two sensors on a servo-powered 2-axis gimbal. The first sensor, a Micasense […]

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