• CAFI Tree Inventory 4 2015

      2015-12
      CAF Tree Inventory 4 updated as of December 2015
    • CAFI Tree Inventory 5 2014

      2014
      CAFI Tree Inventory 5 Updated December 2014
    • CAFI Tree Inventory 5 2015

      2015-12
      CAFI Tree Inventory 5 updated as of December 2015
    • CAFI Tree Inventory4 2014

      2014
      CAFI Tree Inventory 4 Updated December 2014
    • CAFI Vegetation 2014

      2014
      CAFI Vegetation Updated December 2014
    • Calcareous fen vegetation and ecology and the disjunct Betula glandulosa in Southeastern Alaska

      Johnson, Joni M. (2006-08)
      Calcareous fens are rare within southeastern Alaska due to their unique geochemical setting, as are the plant communities produced by these environs. On a global scale these wetland types have been identified as valuable for their biodiversity and have received special protection. The first objective of this research was to characterize the floristics and hydrogeochemistry of a subset of calcareous fens on Chichagof Island in the northern Alexander Archipelago through intensive sampling within each site. Multivariate analyses were used to describe these wetland systems. The second objective of this study included investigating whether or not the disjunct Betula glandulosa (dwarf birch) population was restricted to its current site. B. glandulosa is a habitat generalist in its known range; however, it is found in only one location within the Alexander Archipelago. Germination and seedling transplant experiments were conducted that tested for the effects of site, competition, and the interaction between site and competition. In this manner a subset of calcareous fens in the region was described and abiotic parameters associated with B. glandulosa evaluated. Obtaining baseline information and understanding mechanisms behind these sources of regional biodiversity are important for monitoring purposes and detecting disturbance effects
    • Calibration of an on-line analyzer using neural network modeling

      Yu, Shaohai (2003-08)
      The goal of the project was to predict the ash content of raw coal in real time using the Americium-137 and Cesium-241 scintillation counts from an on-line analyzer. Rather than regression methods (that are current industrial practice), neural networks were used to map the scintillation counts to percentage ash. Quick stop training was used to prevent overfitting The noise and sparseness of the data required that the training, calibration and prediction subsets are statistically similar to each other. Therefore, Kohonen networks were first used to detect the features present in the data set. Three subsets were then built such that they had representative members from each feature. Neural network models were developed for the screened coal, the unscreened coal and the combined data respectively. The results show that the performance of the combined model was comparable to the performance with two different models for the screened and unscreened data. Due to the variance in the sample data, the neural networks (screened, unscreened and combined) did not predict individual samples well. The network predictions were, however, accurate on the average. Compared to the common regression approach, neural network modeling demonstrated much better performance in ash prediction based on certain criteria.
    • Calibration of microbolometer infrared cameras for measuring volcanic ash mass loading

      Carroll, Russell C.; Hawkins, Joseph; Thorsen, Denise; Raskovic, Dejan; Hatfield, Michael (2014-08)
      Small spacecraft with thermal infrared (TIR) imaging capabilities are needed to detect dangerous levels of volcanic ash that can severely damage jet aircraft engines and must be avoided. Grounding aircraft after a volcanic eruption may cost the airlines millions of dollars per day, while accurate knowledge of volcanic ash density might allow for safely routing aircraft around dangerous levels of volcanic ash. There are currently limited numbers of satellites with TIR imaging capabilities so the elapsed time between revisits can be large, and these instruments can only resolve total mass loading along the line-of-sight. Multiple small satellites could allow for decreased revisit times as well as multiple viewing angles to reveal the three-dimensional structure of the ash cloud through stereoscopic techniques. This paper presents the design and laboratory evaluation of a TIR imaging system that is designed to fit within the resource constraints of a multi-unit CubeSat to detect volcanic ash mass loading. The laboratory prototype of this TIR imaging system uses a commercial off-theshelf (COTS) camera with an uncooled microbolometer sensor, two narrowband filters, a black body source and a custom filter wheel. The infrared imaging system detects the difference in attenuation of volcanic ash at 11 μm and 12 μm by measuring the brightness temperature at each band. The brightness temperature difference method is used to measure the column mass loading. Multi-aspect images and stereoscopic techniques are needed to estimate the mass density from the mass loading, which is the measured mass per unit area. Laboratory measurements are used to characterize the noise level and thermal stability of the sensor. A calibration technique is developed to compensate for sensor temperature drift. The detection threshold of volcanic ash density of this TIR imaging system is found to be from 0.35 mg/m3 to 26 mg/m3 for ash clouds that have thickness of 1 km, while ash cloud densities greater than 2.0 mg/m3 are considered dangerous to aircraft. This analysis demonstrates that a TIR imaging system for determining whether the volcanic ash density is dangerous for aircraft is feasible for multi-unit Cubesat platforms.
    • Calving ground habitat selection: Teshekpuk Lake and Western Arctic caribou herds

      Kelleyhouse, Rebecca A. (2001-12)
      Barren-ground caribou (Rangifer tarandus granti) exhibit relative fidelity to calving grounds each spring. The Western Arctic Herd (WAH) and Teshekpuk Lake Herd (TLH) calve separately on Alaska's north slope, each selective of the dominant vegetation type. The WAH consumed mostly sedges, though the TLH diet varied. Despite differing snow conditions between the calving grounds, both herds were selective of the lowest snow cover class. Rugged terrain was avoided by both herds. While the TLH selected a high rate of increase in biomass, the WAH selected high biomass at calving and at peak lactation. Climate trends (1985-2001) were variable. There was a warming trend on the WAH calving ground, though no significant trends were present on the TLH calving ground, as expressed by median NDVI on 21 June. These herds have similar winter ranges and population trends, yet they differ in respect to habitat composition, selection and climate patterns during calving.
    • Camera Trapping Grid Data in Nepal Hindu Kush-Himalaya for regions of Humla 2015 , Manang 2014-2015 and Manang 2016-2017

      Ganga, Regmi; Lama, Rinzin Phunjok; Ghale, Tashi Rapte; Lama, Tenzing; Puri , Ganesh; Huettmann, Falk (2020-04)
      This multi-year, multi-site and multi-species dataset describes Bushnell Camera Trap data from three locations in remote Nepal: Humla 2015, Manang 2014-2015 and Manang 2016-2017. The data from the Hindu Kush-Himalaya region comes from a geo-referenced survey grid and are stored in three MS Excel sheets, also combined and available in CSV consisting of 175658 records and 15 columns with a file size of 19MB. Species covered are Blue Sheep/Bharal (Pseudois nayaur Taxonomic Serial Number TSN 180596 ), Snow Leopard (Panthera unica, Uncia uncia TSN 183811), Beech Marten (Martes foina TSN 621941), Wolf (Canis lupus TSN 180596), birds (Aves Golden Eagle etc.),Pika (Ochotona), Red Fox (Vulpes vulpes TSN 180604), Mountain Weasel (Mustela altaica TSN 621947), Pallas�s Cat (Otocolobus manul, Felis manul TSN 183791), and Golden Jackal (Canis aureus TSN 183817)
    • Can I tell you what really happened?: learning to make decisions in response to indigenous student voice in a high school language arts classroom

      Rushman, Alyssa M.; Patterson, Leslie; Siekmann, Sabine; Martelle, Wendy (2019-05)
      This study focuses on engaging high school students in reading and the decisions I make to sustain that engagement. I learned that one way to enhance the engagement in my classroom is to listen to my students' stories and to incorporate culturally relevant texts. All of the students in this study were previously in our school's language intervention program: Read 180. While teaching this intervention-based class, I noticed this class was a behavior management nightmare. The students' challenging behavior led me to question the intervention program's ability to sustain my students' engagement through the prescribed texts. This study aims to describe my observations in a 10th grade Language Arts II class in Chefornak, Alaska. Specifically, this thesis describes my findings and analysis as it relates to how students show engagement and how I make (and revise) decisions in response to my students' voices. I used teacher action research (TAR) to research the events in my classroom. During an 11-week period, I collected audio recordings, student work samples, and teacher action research journal entries. At the end of the research, I also wrote memos about the data. I used constructive grounded theory (CGT) to make sense of the story the data tells and to see what kind of patterns were present. This research is important to me because it helps me to understand the weaknesses and the strengths in my own instructional planning as well as how I interpret students' participation in class. After this research, I am convinced that learning outcomes are preceded by learner engagement, and that learner engagement is complex.
    • Can tax policy change exploration levels? A case of Alaska oil legislation.

      Tappen, Samuel Weston; Baek, Jungho; Little, Joseph; Reynolds, Douglas (2014-08)
      This thesis applies modern Autoregressive Distributed Lag modeling techniques to estimate the effects of oil tax policy in the case of the 2007 ACES legislation on exploratory drilling within Alaska. This analysis uses recently released public data to examine the period of 1986 to 2013 in quarterly intervals which includes all periods in which ACES was in place. While this subject has become a popular subject of debate within the state and industry, no similar statistical analysis has been conducted to date. According to the results, ACES had a significantly negative and lasting effect on exploration levels while it was in effect. The oil price and interest rate are also found to be important variables in characterizing exploration activity.
    • Can We Remain Yup'ik In These Contemporary Times? A Conversation Of Three Yugtun-Speaking Mothers

      Michael, Veronica E.; Marlow, P. (2010)
      The Yup'ik people of southwestern Alaska are experiencing language shift from Yugtun to English. This study is a conversation between three Yugtun speaking mothers who are trying to understand this shift and wondering if they can maintain their identity, and that of their children, in this changing world. The study takes place in the village of Kuiggluk. Data collection included a research journal and focus group discussions. In this study, I have tried to paint a picture of who we are as Yup'ik mothers in our contemporary lives. Qayaruaq, Mikngayaq and I carry with us our own mothers' teachings, while at the same time we face different situations in school and schooling. Through our discussions we sought to understand the reasons for language loss/shift -- a shift that seems to be driving us away from our culture.
    • Canenermiut lifeways and worldview and western fish and wildlife management

      Jack, Carl T. (2002-12)
      The Canenermiut inter-generational worldview embodies the proper use and conservation of the resources necessary to sustain life from time immemorial. The classical Yupiaq conservation ethics in the utilization of subsistence resources are well established and practiced to this day by Canenermiut that is geared to the survival of their culture and community. When western fish and wildlife managers promulgate regulations from urban areas of Alaska on the taking of subsistence resources in rural Alaska they often find out that rural residents such as the Canenermiut ... are unwilling to follow the regulations. Caneneq is a coastal area between Kusquqvak (Kuskokwim) Bay up to Qaluyaaq (Nelson Island). Canenermiut is made up of two Yupiaq words, Caneneq as defined earlier and the suffix miut is a Yup'ik word defined as occupant of that geographic area or a place. The people from these villages see the imposition of the western precepts of fish and wildlife management systems as efforts by outsiders to control their way of life. They see this effort as inconsistent with their worldview of how a human should fit within the creation of a higher being. These people do not participate in the formulation of public policies or the promulgation of the regulations that affect their lives and as a consequence do not have a sense of ownership of them. The Canenermiut worldviews are fundamentally different from the worldview of the people of European origin who brought with them concepts of lifeways foreign to Alaska's indigenous people. The author of this thesis is one of Canenermiut from the Native Village of Kipnuk, who was raised by his parents the traditional Yupiaq way of life and taught by his uncle the art of hunting and fishing. He is also one who was also educated in schools of the dominant western society. As one of many other Alaska Native children who were subjected to the assimilation effort of the United States government in the image of the Other, the author is very cognizant of both the Other's lifeways and the classical Yupiaq lifeways ... The author having lived in both worlds, the world of Canenermiut in the Native Village of Kipnuk and in Anchorage will attempt to articulate the major components of Canenermiut worldview. This is a worldview that western fish and wildlife managers do not understand but ones that may help in enhancing the conservation and utilization of these subsistence resources. Secondly, the author will attempt to articulate the degree of the paradigm shift in the Canenermiut indigenous value system that has occurred among this generation. The desire of the Canenermiut to retain their cultural value system and to control their destiny is affirmed by the author. In addition, as the precepts of fish and wildlife management systems are accepted over time by Alaska Native people outside of the geographic area of Caneneq, the Canenermiut do not want to be left behind and have a strong desire to- participate in these management systems.
    • CANOLA QUALITY IN ALASKA (2001 HARVEST)

      Geier, Hans (Agricultural and Forestry Experiment Station, School of Agriculture and Land Resources Management, University of Alaska Fairbanks, 2004-01)
      In 2001, approximately eight acres of canola (Brassica campestris/rapa) was planted on the Agricultural and Forestry Experiment Station’s Delta Field Research Site. Three Polish varieties were planted, mainly Reward and Colt, with a small amount of Horizon. Approximately ten 1500-pound bags of canola were harvested, totalling a yield of 15,000 pounds, nearly a ton per acre. In July of 2003 a small oil press was set up at the AFES Farm and about 25 gallons of oil was pressed. The oil yield was about 25–30% of the weight of the seed. The products, oil and meal, along with five samples of the canola seed were sent to SunWest Food Laboratory in Saskatoon, Saskatchewan, for analysis. This report contains quality data from tests of the canola seed, oil, and meal from the 2001 canola grown on the Delta farm.
    • Canola Quality in Alaska, 2004 and 2005 Harvests

      Geier, Hans (School of Agriculture and Land Resources Management, Agricultural and Forestry Experiment Station, University of Alaska Fairbanks, 2006-12)
      About one acre of Polish canola (Brassica rapa) was planted on the Agricultural and Forestry Experiment Station (AFES) Delta Junction research site in 2004 and 2005. Reward, a Polish canola variety, was planted. The Reward seeds were from a local grower who bought it in Alberta. Approximately four 100-pound bags of canola were harvested in 2004, totaling a yield of 400 pounds per acre. The 2005 canola crop on the AFES farm yielded about 850 pounds per acre. Oil press equipment was set up at the AFES farm in University of Alaska Fairbanks (UAF) in June 2005, and seeds from the 2004 crop were pressed for oil. In previous years, the oil yield was about 25-30% of the seed weight. Shortly after harvest, two samples of oil (2004) and three samples of canola seeds (two from 2004, one from 2005) were sent to SunWest Food Laboratory in Saskatoon (Saskatchewan, Canada) for analysis. This report contains data on seed quality and oil test results from canola harvested in 2004 from AFES and from one cooperating grower in Delta. The 2005 canola was not pressed, but a seed sample from the UAF farm was sent to the SunWest Lab for analysis.