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• 1. [Article] An Experimental Investigation of Nest Reuse and Nest Site Selection in an Open-Cup Nesting Passerine

  Eastern Kingbirds (Tyrannus tyrannus) breed from coast to coast in North America and build open-cup nests in trees. They have been extensively studied across most of their range and have only on occasion ...

  Citation × Citation Citation Abstract Copy Title: An Experimental Investigation of Nest Reuse and Nest Site Selection in an Open-Cup Nesting Passerine Author: Cancellieri, Sarah A. Year: 2013 Eastern Kingbirds (Tyrannus tyrannus) breed from coast to coast in North America and build open-cup nests in trees. They have been extensively studied across most of their range and have only on occasion been documented to reuse a nest from a previous season. However, at Malheur National Wildlife Refuge (MNWR), located in southeastern Oregon, ~10 % of female Eastern Kingbirds reuse old nests of mainly American Robins (Turdus migratorius). In an attempt to address why nest reuse is so common at MNWR, I used artificial nests to evaluate two hypotheses as to why nest reuse is common in this breeding population. The first hypothesis states that Eastern Kingbirds reuse nests to save time and/or energy (TES) and the second one states nest reuse occurs because there is a shortage of suitable nest sites (NSS). I was able to reject the TES hypothesis because artificial nests provided no apparent reproductive benefits to Eastern Kingbirds, except that if a nest had failed it took less time to lay a replacement clutch after an initial failure if an artificial nest was used instead of building a new nest. A more reasonable explanation is that Eastern Kingbirds face a limited availability of suitable nest sites. With this in mind, I took vegetation measurements to address the hypothesis that Eastern Kingbirds make adaptive choices when selecting a nest site, in which case they would choose sites that increase their probability of breeding successfully. Successful nests, both natural and artificial, were placed higher in a tree and on a steeper angled nest branch than their failed counterparts. Those findings suggest that Eastern Kingbirds make adaptive choices when selecting a nest site. Title: An Experimental Investigation of Nest Reuse and Nest Site Selection in an Open-Cup Nesting Passerine Author: Cancellieri, Sarah A. Year: 2013 Eastern Kingbirds (Tyrannus tyrannus) breed from coast to coast in North America and build open-cup nests in trees. They have been extensively studied across most of their range and have only on occasion been documented to reuse a nest from a previous season. However, at Malheur National Wildlife Refuge (MNWR), located in southeastern Oregon, ~10 % of female Eastern Kingbirds reuse old nests of mainly American Robins (Turdus migratorius). In an attempt to address why nest reuse is so common at MNWR, I used artificial nests to evaluate two hypotheses as to why nest reuse is common in this breeding population. The first hypothesis states that Eastern Kingbirds reuse nests to save time and/or energy (TES) and the second one states nest reuse occurs because there is a shortage of suitable nest sites (NSS). I was able to reject the TES hypothesis because artificial nests provided no apparent reproductive benefits to Eastern Kingbirds, except that if a nest had failed it took less time to lay a replacement clutch after an initial failure if an artificial nest was used instead of building a new nest. A more reasonable explanation is that Eastern Kingbirds face a limited availability of suitable nest sites. With this in mind, I took vegetation measurements to address the hypothesis that Eastern Kingbirds make adaptive choices when selecting a nest site, in which case they would choose sites that increase their probability of breeding successfully. Successful nests, both natural and artificial, were placed higher in a tree and on a steeper angled nest branch than their failed counterparts. Those findings suggest that Eastern Kingbirds make adaptive choices when selecting a nest site. Close

• 2. [Article] Lesson for America? England's development areas

  The work is a descriptive and comparative study of the British program for economically lagging regions of the country. The author's special interest was local participation in the central Government activity. ...

  Citation × Citation Citation Abstract Copy Title: Lesson for America? England's development areas Author: Current, Thomas G. Year: 1972 The work is a descriptive and comparative study of the British program for economically lagging regions of the country. The author's special interest was local participation in the central Government activity. Secondary sources of information on local aspects were in short supply, and the writer relied upon interviews and unpublished documents obtained on a visit to England to supplement published material. His extensive experience in the American development program also was utilized. The study offers a classification of elements in the programs of the two countries and identifies comparable trends which have carried further in the British experience. The study of these trends can therefore be of use in evaluation of the direction and alternatives in the American approach. Dramatic unemployment in declining basic industries concentrated in Northern England, Scotland, and Wales resulted in pressure on the British Government to create jobs in depressed regions during the 1930’s. The author calls this the “Job Development Era.” The program feature was the creation of central Government trading estates, or industrial parks. Firms were' encouraged to move to suffering regions by the provision of factory sites on advantageous terms, by loans and grants to finance expansion, by loans and grants to local government for needed public improvements, and by retraining programs to prepare indigenous workers to take new employment. The “Resource Development Era” followed in both countries. In the U. K. it featured the creation of regional development policies, establishment of new towns as favored sites for both industry and workers, resource development grants in the lagging regions, grants to reclaim derelict land, and especially the initiation of a national system of controls on the location of industry and large offices. The U. S. has not adopted location controls, but in other ways is currently in the "Resource Development Era," in which a depressed region is treated as a whole, rather than concentrating program assistance on particularly severe unemployment pockets. The chief characteristic of the third and present British stage, the “Balanced Growth Era,” is recognition of the need to restructure regional economies in order to enable them to generate their own growth without further special assistance. Britain utilizes regional councils and government boards to plan the restructuring process, but only in the late 1960’s has major new financing supported implementation. Neither the resources nor the policy commitment has been made in the U. S. to attempt to alter the regional balance of the country. The author made several forecasts from his comparative study, chief among them being (1) that the U.S. will inevitably but reluctantly move into the “Balanced Growth” period in its programming, and (2) that industrial location controls will not be adopted in the Same way in the U. S. as in the U. K., but may come as environmental preservation measures. A key premise at the initiation of the study was that there must be some community and citizen participation in the British program, despite the paucity of printed information on these subjects. After a thorough search of the literature, and interviewing in England, the study did disclose an effective but little known role played by the local authorities. However, the author proved himself wrong in the supposition that the British citizenry and local community organizations have any noticeable impact on the program. In this way it is significantly different than the American experience. Title: Lesson for America? England's development areas Author: Current, Thomas G. Year: 1972 The work is a descriptive and comparative study of the British program for economically lagging regions of the country. The author's special interest was local participation in the central Government activity. Secondary sources of information on local aspects were in short supply, and the writer relied upon interviews and unpublished documents obtained on a visit to England to supplement published material. His extensive experience in the American development program also was utilized. The study offers a classification of elements in the programs of the two countries and identifies comparable trends which have carried further in the British experience. The study of these trends can therefore be of use in evaluation of the direction and alternatives in the American approach. Dramatic unemployment in declining basic industries concentrated in Northern England, Scotland, and Wales resulted in pressure on the British Government to create jobs in depressed regions during the 1930’s. The author calls this the “Job Development Era.” The program feature was the creation of central Government trading estates, or industrial parks. Firms were' encouraged to move to suffering regions by the provision of factory sites on advantageous terms, by loans and grants to finance expansion, by loans and grants to local government for needed public improvements, and by retraining programs to prepare indigenous workers to take new employment. The “Resource Development Era” followed in both countries. In the U. K. it featured the creation of regional development policies, establishment of new towns as favored sites for both industry and workers, resource development grants in the lagging regions, grants to reclaim derelict land, and especially the initiation of a national system of controls on the location of industry and large offices. The U. S. has not adopted location controls, but in other ways is currently in the "Resource Development Era," in which a depressed region is treated as a whole, rather than concentrating program assistance on particularly severe unemployment pockets. The chief characteristic of the third and present British stage, the “Balanced Growth Era,” is recognition of the need to restructure regional economies in order to enable them to generate their own growth without further special assistance. Britain utilizes regional councils and government boards to plan the restructuring process, but only in the late 1960’s has major new financing supported implementation. Neither the resources nor the policy commitment has been made in the U. S. to attempt to alter the regional balance of the country. The author made several forecasts from his comparative study, chief among them being (1) that the U.S. will inevitably but reluctantly move into the “Balanced Growth” period in its programming, and (2) that industrial location controls will not be adopted in the Same way in the U. S. as in the U. K., but may come as environmental preservation measures. A key premise at the initiation of the study was that there must be some community and citizen participation in the British program, despite the paucity of printed information on these subjects. After a thorough search of the literature, and interviewing in England, the study did disclose an effective but little known role played by the local authorities. However, the author proved himself wrong in the supposition that the British citizenry and local community organizations have any noticeable impact on the program. In this way it is significantly different than the American experience. Close

• 3. [Article] A comparison of socialization and the current attitudes towards personal and feminist issues of women over 65

  Women, as feminist and as familist, have been in many varied ways the subjects of study. They have been studied as black women, middle-aged women, sexual women, women in poverty, women in prison, women ...

  Citation × Citation Citation Abstract Copy Title: A comparison of socialization and the current attitudes towards personal and feminist issues of women over 65 Author: Austin, Gayle, Sime, Anna Belle Year: 1975 Women, as feminist and as familist, have been in many varied ways the subjects of study. They have been studied as black women, middle-aged women, sexual women, women in poverty, women in prison, women raped, executives, celebrities, lesbians and homemakers. The classifications and combinations approached infinity. Now older women are becoming a more popular research topic, as their numbers increase with medical attainments. With the increasing participation of older “sisters” in such organizations as the National Organization for Women, and the advent of groups such as the gray panthers, it has become apparent that there are no age barriers to feminism. A series of questions led us to our topic. What will our attitudes on the issues now personally significant be in 40 years, when we have passed “retirement age?” What were women who have reached this age like when they were our age and younger? Is there a connection between their younger years and the attitudes they now possess? In pursing this final question we chose to define the “younger years” as before 25, when socialization influences one’s search of identity, development of autonomy, and development of internal criteria for self-esteem. The age chosen for our population was after the 65 the birthday, when most women are no longer working outside of the home for wages. It has been said that women who have achieved and have been rewarded for their achievements cannot accept traditional roles. Such roles do not gratify their non-nurturant, non-supportive, non-dependent, non-passive aspects of their selves. Our hypotheses were made in accordance: that a woman’s “feminism,” as measured by our scale, would be directly related to her achievement in school and work, her leadership or participation in religious activities, politics, and sports. In addition to the above objectives, we wanted to seek a relationship between the woman’s feminism scores and other aspects of her family background, her inter-relationships with boys, and her opportunities to travel. We approached these issues without hypotheses, but with great receptivity and interest. Title: A comparison of socialization and the current attitudes towards personal and feminist issues of women over 65 Author: Austin, Gayle, Sime, Anna Belle Year: 1975 Women, as feminist and as familist, have been in many varied ways the subjects of study. They have been studied as black women, middle-aged women, sexual women, women in poverty, women in prison, women raped, executives, celebrities, lesbians and homemakers. The classifications and combinations approached infinity. Now older women are becoming a more popular research topic, as their numbers increase with medical attainments. With the increasing participation of older “sisters” in such organizations as the National Organization for Women, and the advent of groups such as the gray panthers, it has become apparent that there are no age barriers to feminism. A series of questions led us to our topic. What will our attitudes on the issues now personally significant be in 40 years, when we have passed “retirement age?” What were women who have reached this age like when they were our age and younger? Is there a connection between their younger years and the attitudes they now possess? In pursing this final question we chose to define the “younger years” as before 25, when socialization influences one’s search of identity, development of autonomy, and development of internal criteria for self-esteem. The age chosen for our population was after the 65 the birthday, when most women are no longer working outside of the home for wages. It has been said that women who have achieved and have been rewarded for their achievements cannot accept traditional roles. Such roles do not gratify their non-nurturant, non-supportive, non-dependent, non-passive aspects of their selves. Our hypotheses were made in accordance: that a woman’s “feminism,” as measured by our scale, would be directly related to her achievement in school and work, her leadership or participation in religious activities, politics, and sports. In addition to the above objectives, we wanted to seek a relationship between the woman’s feminism scores and other aspects of her family background, her inter-relationships with boys, and her opportunities to travel. We approached these issues without hypotheses, but with great receptivity and interest. Close

• 4. [Article] Making Software, Making Regions: Labor Market Dualization, Segmentation, and Feminization in Austin, Portland and Seattle

  Through mixed-methods research, this dissertation details the regionally variegated and place-specific software production processes in three second-tier US software regions. I focus on the relationship ...

  Citation × Citation Citation Abstract Copy Title: Making Software, Making Regions: Labor Market Dualization, Segmentation, and Feminization in Austin, Portland and Seattle Author: Mahmoudi, Dillon Year: 2017 Through mixed-methods research, this dissertation details the regionally variegated and place-specific software production processes in three second-tier US software regions. I focus on the relationship between different industrial, firm, and worker production configurations and broad-based economic development, prosperity, and inequality. I develop four main empirical findings. First, I argue for a periodization of software production that tracks with changes in software laboring activity, software technologies, and wage-employment relationships. Through a GIS-based method, I use the IPUMS-USA to extensively measure the amount and type of software labor in industries across the US between 1970 and 2015. I map the uneven geography of software labor that produces different clusters of various software occupations. Second, I argue that between each software period, locational windows provide an opportunity for second-tier software regions to challenge Silicon Valley. I combine the IPUMS-USA dataset with interviews of software workers to analyze forms of regionally specific modes of production in Seattle, Washington, Portland, Oregon, and Austin, Texas. I trace how software production in these three cities evolves between each software period, taking on different spatial configurations, firm strategies, labor practices, and technological characteristics. Third, I argue that software labor is hyper-sensitive to deskilling because of software production activity produces software. I combine occupation classifications and interviews with software workers to interrogate the ever-present need for software workers to learn the newest development practices and software languages as firms seek to automate software production. I define five key moments since the 1970s that exemplify software labor market dualization and segmentation. Using interviews, and conference observations, I find that community-based organizations and labor market intermediaries locally mitigate the structural tendencies toward labor market dualization and segmentation. I argue that without intervention, the layered and bifurcated labor market for software production reproduces existing inequalities. Further, the organizational, technological, and spatial changes in software production reduce the potential for equitable wealth production. Ultimately, this dissertation argues for the importance of labor organizing in software, contributing empirical and theoretical work in a lineage of regional-based industrial restructuring literature. The regional and industrial geographies produced by and out of software production are significant forces in the economy at regional and national scales. I connect this process to the feminization of other industries, noting how the technical nature of software production structurally genders and racializes the labor force. Leveraging a labor feminization framework highlights the flexibilization of labor and the rift between the pace of software skill building and technological development. Both software production and regional economies are necessary entry points to understand new capitalist relations. Understanding these new relations thus requires examining how configurations of software production differ across regions, how they impact industry and regional economic development outcomes, and how they weaken or strengthen actions of local workers, local organizations, and local firms. These processes offer a glimpse into how the contemporary moment of production differs from other moments of production. Armed with this understanding, this research will be able to connect industry and regional economic-development outcomes to regionally specific modes of production, answering relevant software-based economic-development policy questions. Title: Making Software, Making Regions: Labor Market Dualization, Segmentation, and Feminization in Austin, Portland and Seattle Author: Mahmoudi, Dillon Year: 2017 Through mixed-methods research, this dissertation details the regionally variegated and place-specific software production processes in three second-tier US software regions. I focus on the relationship between different industrial, firm, and worker production configurations and broad-based economic development, prosperity, and inequality. I develop four main empirical findings. First, I argue for a periodization of software production that tracks with changes in software laboring activity, software technologies, and wage-employment relationships. Through a GIS-based method, I use the IPUMS-USA to extensively measure the amount and type of software labor in industries across the US between 1970 and 2015. I map the uneven geography of software labor that produces different clusters of various software occupations. Second, I argue that between each software period, locational windows provide an opportunity for second-tier software regions to challenge Silicon Valley. I combine the IPUMS-USA dataset with interviews of software workers to analyze forms of regionally specific modes of production in Seattle, Washington, Portland, Oregon, and Austin, Texas. I trace how software production in these three cities evolves between each software period, taking on different spatial configurations, firm strategies, labor practices, and technological characteristics. Third, I argue that software labor is hyper-sensitive to deskilling because of software production activity produces software. I combine occupation classifications and interviews with software workers to interrogate the ever-present need for software workers to learn the newest development practices and software languages as firms seek to automate software production. I define five key moments since the 1970s that exemplify software labor market dualization and segmentation. Using interviews, and conference observations, I find that community-based organizations and labor market intermediaries locally mitigate the structural tendencies toward labor market dualization and segmentation. I argue that without intervention, the layered and bifurcated labor market for software production reproduces existing inequalities. Further, the organizational, technological, and spatial changes in software production reduce the potential for equitable wealth production. Ultimately, this dissertation argues for the importance of labor organizing in software, contributing empirical and theoretical work in a lineage of regional-based industrial restructuring literature. The regional and industrial geographies produced by and out of software production are significant forces in the economy at regional and national scales. I connect this process to the feminization of other industries, noting how the technical nature of software production structurally genders and racializes the labor force. Leveraging a labor feminization framework highlights the flexibilization of labor and the rift between the pace of software skill building and technological development. Both software production and regional economies are necessary entry points to understand new capitalist relations. Understanding these new relations thus requires examining how configurations of software production differ across regions, how they impact industry and regional economic development outcomes, and how they weaken or strengthen actions of local workers, local organizations, and local firms. These processes offer a glimpse into how the contemporary moment of production differs from other moments of production. Armed with this understanding, this research will be able to connect industry and regional economic-development outcomes to regionally specific modes of production, answering relevant software-based economic-development policy questions. Close

• 5. [Article] English Education in Thailand and Singapore : Differences in English Education, Use and Identity

  The Secretary General of ASEAN asserted the importance of education and the use English in promoting and bringing prosperity to the ASEAN nations. "Through education, through the use of English language ...

  Citation × Citation Citation Abstract Copy Title: English Education in Thailand and Singapore : Differences in English Education, Use and Identity Author: Hice, Chelsey Year: 2015 The Secretary General of ASEAN asserted the importance of education and the use English in promoting and bringing prosperity to the ASEAN nations. "Through education, through the use of English language and, more importantly, with a heightened sense of ASEAN Identity and ASEAN Community, we hope that ASEAN integration and cooperation will bring both benefits and opportunities to the region" (Le Luong Minh, 2013). Taking Thailand and Singapore into consideration, it is clear that national realities vary greatly within the region in regards to English proficiency rates. Education First’s 2013 English Proficiency Index Report revealed that Singapore was the second highest English proficiency rating of the ASEAN Nations, Coming in slightly under Malaysia in the classification "High proficiency". Comparatively, Thailand ranked 55th out of 60 countries rated, falling into the "Very Low Proficiency" category. Critiques of Thailand’s low rankings tend to be blamed on a weak English education system. While this is indeed an imperative factor, to understand other factors it is important to consider the other two areas in questions: Use and Identity. These three core factors can be applied specifically to the regional goal of improving English proficiency and understanding the difficulty of creating regional policies. This study will show the relationship between English proficiency and student sentiments on education, opportunity for use, and identity. Title: English Education in Thailand and Singapore : Differences in English Education, Use and Identity Author: Hice, Chelsey Year: 2015 The Secretary General of ASEAN asserted the importance of education and the use English in promoting and bringing prosperity to the ASEAN nations. "Through education, through the use of English language and, more importantly, with a heightened sense of ASEAN Identity and ASEAN Community, we hope that ASEAN integration and cooperation will bring both benefits and opportunities to the region" (Le Luong Minh, 2013). Taking Thailand and Singapore into consideration, it is clear that national realities vary greatly within the region in regards to English proficiency rates. Education First’s 2013 English Proficiency Index Report revealed that Singapore was the second highest English proficiency rating of the ASEAN Nations, Coming in slightly under Malaysia in the classification "High proficiency". Comparatively, Thailand ranked 55th out of 60 countries rated, falling into the "Very Low Proficiency" category. Critiques of Thailand’s low rankings tend to be blamed on a weak English education system. While this is indeed an imperative factor, to understand other factors it is important to consider the other two areas in questions: Use and Identity. These three core factors can be applied specifically to the regional goal of improving English proficiency and understanding the difficulty of creating regional policies. This study will show the relationship between English proficiency and student sentiments on education, opportunity for use, and identity. Close

• 6. [Article] Impacts of Early Sexual Experience and Associated Risk of Sexually Transmitted Infection (STI) among Teens and Adults in the United States

  This analysis explores incidence rates of sexually transmitted infections (STIs) among minority group teenagers (aged 15-19) and adults aged 20-34 in the United States. The primary research question is ...

  Citation × Citation Citation Abstract Copy Title: Impacts of Early Sexual Experience and Associated Risk of Sexually Transmitted Infection (STI) among Teens and Adults in the United States Author: Garcia-Alexander, Ginny Year: 2008 This analysis explores incidence rates of sexually transmitted infections (STIs) among minority group teenagers (aged 15-19) and adults aged 20-34 in the United States. The primary research question is aimed at whether or not the early onset of sexual activity is directly related to the incidence of STI transmission among Americans. Discussion is given to the current literature with respect to the most recent trends in STIs as well as some historical background on classifications. Also examined are the differing impacts observed for those who are affected by bacterial infections (young minorities) and those who are affected by viral infections (majority group members with higher levels of education). The National Survey of Family Growth, Cycle 6, 2002 was used to obtain descriptive results presented in the form of tabular representations and logistic regressions that model the likelihood of contracting an STI for both teens and adults. Title: Impacts of Early Sexual Experience and Associated Risk of Sexually Transmitted Infection (STI) among Teens and Adults in the United States Author: Garcia-Alexander, Ginny Year: 2008 This analysis explores incidence rates of sexually transmitted infections (STIs) among minority group teenagers (aged 15-19) and adults aged 20-34 in the United States. The primary research question is aimed at whether or not the early onset of sexual activity is directly related to the incidence of STI transmission among Americans. Discussion is given to the current literature with respect to the most recent trends in STIs as well as some historical background on classifications. Also examined are the differing impacts observed for those who are affected by bacterial infections (young minorities) and those who are affected by viral infections (majority group members with higher levels of education). The National Survey of Family Growth, Cycle 6, 2002 was used to obtain descriptive results presented in the form of tabular representations and logistic regressions that model the likelihood of contracting an STI for both teens and adults. Close

• 7. [Article] Health Behaviour Changes after Diagnosis of Chronic Illness Among Canadians Aged 50 or Older

  Changes in health behaviors (smoking, physical activity, alcohol consumption, and fruit and vegetable consumption) after diagnosis of chronic health conditions (heart disease, cancer, stroke, respiratory ...

  Citation × Citation Citation Abstract Copy Title: Health Behaviour Changes after Diagnosis of Chronic Illness Among Canadians Aged 50 or Older Author: Newsom, Jason T., Huguet, Nathalie, Ramage-Morin, Pamela L., McCarthy, Michael Joseph, Bernier, Julie, Kaplan, Mark S., McFarland, Bentson H. Year: 2012 Changes in health behaviors (smoking, physical activity, alcohol consumption, and fruit and vegetable consumption) after diagnosis of chronic health conditions (heart disease, cancer, stroke, respiratory disease, and diabetes) were examined among Canadians aged 50 or older. Results from 12 years of longitudinal data from the Canadian National Population Health Survey indicated relatively modest changes in behavior. Although significant decreases in smoking were observed among all groups except those with respiratory disease, at least 75% of smokers did not quit. No significant changes emerged in the percentage meeting physical activity recommendations, except those with diabetes, or in excessive alcohol consumption, except those with diabetes and respiratory disease. The percentage reporting the recommended minimum fruit and vegetable intake did not increase significantly among any group. Title: Health Behaviour Changes after Diagnosis of Chronic Illness Among Canadians Aged 50 or Older Author: Newsom, Jason T., Huguet, Nathalie, Ramage-Morin, Pamela L., McCarthy, Michael Joseph, Bernier, Julie, Kaplan, Mark S., McFarland, Bentson H. Year: 2012 Changes in health behaviors (smoking, physical activity, alcohol consumption, and fruit and vegetable consumption) after diagnosis of chronic health conditions (heart disease, cancer, stroke, respiratory disease, and diabetes) were examined among Canadians aged 50 or older. Results from 12 years of longitudinal data from the Canadian National Population Health Survey indicated relatively modest changes in behavior. Although significant decreases in smoking were observed among all groups except those with respiratory disease, at least 75% of smokers did not quit. No significant changes emerged in the percentage meeting physical activity recommendations, except those with diabetes, or in excessive alcohol consumption, except those with diabetes and respiratory disease. The percentage reporting the recommended minimum fruit and vegetable intake did not increase significantly among any group. Close

• 8. [Article] Agricultural Classification of Multi-Temporal MODIS Imagery in Northwest Argentina Using Kansas Crop Phenologies

  Subtropical deforestation in Latin America is thought to be driven by demand for agricultural land, particularly to grow soybeans. However, existing remote sensing methods that can differentiate crop types ...

  Citation × Citation Citation Abstract Copy Title: Agricultural Classification of Multi-Temporal MODIS Imagery in Northwest Argentina Using Kansas Crop Phenologies Author: Keifer, Jarrett Alexander Year: 2014 Subtropical deforestation in Latin America is thought to be driven by demand for agricultural land, particularly to grow soybeans. However, existing remote sensing methods that can differentiate crop types to verify this hypothesis require high spatial or spectral resolution data, or extensive ground truth information to develop training sites, none of which are freely available for much of the world. I developed a new method of crop classification based on the phenological signatures of crops extracted from multi-temporal MODIS vegetation indices. I tested and refined this method using the USDA Cropland Data Layer from Kansas, USA as a reference. I then applied the method to classify crop types for a study site in Pellegrini, Santiago Del Estero, Argentina. The results show that this method is unable to effectively separate summer crops in Pellegrini, but can differentiate summer crops and non-summer crops. Unmet assumptions about agricultural practices are primarily responsible for the ineffective summer crop classification, underlining the need for researchers to have a complete understanding of ground conditions when designing a remote sensing analysis. Title: Agricultural Classification of Multi-Temporal MODIS Imagery in Northwest Argentina Using Kansas Crop Phenologies Author: Keifer, Jarrett Alexander Year: 2014 Subtropical deforestation in Latin America is thought to be driven by demand for agricultural land, particularly to grow soybeans. However, existing remote sensing methods that can differentiate crop types to verify this hypothesis require high spatial or spectral resolution data, or extensive ground truth information to develop training sites, none of which are freely available for much of the world. I developed a new method of crop classification based on the phenological signatures of crops extracted from multi-temporal MODIS vegetation indices. I tested and refined this method using the USDA Cropland Data Layer from Kansas, USA as a reference. I then applied the method to classify crop types for a study site in Pellegrini, Santiago Del Estero, Argentina. The results show that this method is unable to effectively separate summer crops in Pellegrini, but can differentiate summer crops and non-summer crops. Unmet assumptions about agricultural practices are primarily responsible for the ineffective summer crop classification, underlining the need for researchers to have a complete understanding of ground conditions when designing a remote sensing analysis. Close

• 9. [Article] Status of Nutria (Myocastor coypus) Populations in the Pacific Northwest and Development of Associated Control and Management Strategies, with an Emphasis on Metropolitan Habitats

  The nutria (Myocastor coypus) is a semi-aquatic rodent native to South America that was introduced to the Pacific Northwest, USA, in the 1930s. Primary damage categories from this invasive species include ...

  Citation × Citation Citation Abstract Copy Title: Status of Nutria (Myocastor coypus) Populations in the Pacific Northwest and Development of Associated Control and Management Strategies, with an Emphasis on Metropolitan Habitats Author: Sheffels, Trevor Robert Year: 2013 The nutria (Myocastor coypus) is a semi-aquatic rodent native to South America that was introduced to the Pacific Northwest, USA, in the 1930s. Primary damage categories from this invasive species include burrowing and herbivory, resulting in habitat degradation. Nutria have become well-established in metropolitan habitats, and anecdotal information suggests the problem has increased in recent years. However, little regional research on the species has been conducted. The scope of this research, which emphasizes metropolitan habitats, includes three primary foci in relation to nutria populations in the Pacific Northwest: modeling habitat suitability, assessing activity and movement patterns, and identifying and managing negative impacts. Large-scale management of any invasive species requires understanding of the current and potential future population distribution. Cold temperatures have been assumed to be a limiting factor for the geographic distribution of nutria populations, but this assumption had not been explicitly tested. A mechanistic habitat suitability model based on winter temperatures performed well in predicting nutria distribution in the Pacific Northwest and nationally. Regional results suggest nutria currently occupy most accessible suitable habitat. However, coupling the model with future climate change data suggests a much larger suitable habitat zone regionally and nationally in the near future. Management of an invasive species on a local scale requires region-specific information about behavior patterns. Radio-telemetry tracking of local nutria populations in metropolitan habitats suggested higher diurnal activity levels than reported elsewhere. Activity areas were also on the lower end of reported nutria home ranges, suggesting the studied metropolitan wetland sites represent core habitat for nutria in the region. Comparison of two transmitter attachment methods, a neck collar and a tail mount, did not identify a clearly superior attachment method for short-term nutria behavior studies. The presence of nutria in metropolitan habitats in the Pacific Northwest necessitates the need to expand the limited management techniques available for these habitats. Standard Vexar® plastic mesh tubes very effectively mitigated nutria herbivory damage to woody vegetation live stakes planted in a metropolitan habitat restoration site. A recently developed nutria multiple-capture cage trap captured larger nutria and reduced non-target captures compared to a standard cage trap. The design of the multiple-capture trap, however, prevented multiple-capture events because small nutria escaped the trap. This research contributes substantially to previously limited information about nutria in the Pacific Northwest and resulted in several new findings. Climate change modeling provides the first evidence that nutria ranges could expand in the near future. Evaluation of new radio-telemetry methods will benefit future behavior studies. The assessment of new damage prevention tools provides more options for the management of nutria in urban habitats. Management recommendations include creating regional nutria management plans, identifying and targeting priority monitoring regions, finding key stakeholders, focusing on public education, and initiating a pilot control program. Recommendations for research include evaluating effects on native fauna, conducting disease surveys, assessing the extent of damage, continuing habitat suitability analysis, and developing population indices. Title: Status of Nutria (Myocastor coypus) Populations in the Pacific Northwest and Development of Associated Control and Management Strategies, with an Emphasis on Metropolitan Habitats Author: Sheffels, Trevor Robert Year: 2013 The nutria (Myocastor coypus) is a semi-aquatic rodent native to South America that was introduced to the Pacific Northwest, USA, in the 1930s. Primary damage categories from this invasive species include burrowing and herbivory, resulting in habitat degradation. Nutria have become well-established in metropolitan habitats, and anecdotal information suggests the problem has increased in recent years. However, little regional research on the species has been conducted. The scope of this research, which emphasizes metropolitan habitats, includes three primary foci in relation to nutria populations in the Pacific Northwest: modeling habitat suitability, assessing activity and movement patterns, and identifying and managing negative impacts. Large-scale management of any invasive species requires understanding of the current and potential future population distribution. Cold temperatures have been assumed to be a limiting factor for the geographic distribution of nutria populations, but this assumption had not been explicitly tested. A mechanistic habitat suitability model based on winter temperatures performed well in predicting nutria distribution in the Pacific Northwest and nationally. Regional results suggest nutria currently occupy most accessible suitable habitat. However, coupling the model with future climate change data suggests a much larger suitable habitat zone regionally and nationally in the near future. Management of an invasive species on a local scale requires region-specific information about behavior patterns. Radio-telemetry tracking of local nutria populations in metropolitan habitats suggested higher diurnal activity levels than reported elsewhere. Activity areas were also on the lower end of reported nutria home ranges, suggesting the studied metropolitan wetland sites represent core habitat for nutria in the region. Comparison of two transmitter attachment methods, a neck collar and a tail mount, did not identify a clearly superior attachment method for short-term nutria behavior studies. The presence of nutria in metropolitan habitats in the Pacific Northwest necessitates the need to expand the limited management techniques available for these habitats. Standard Vexar® plastic mesh tubes very effectively mitigated nutria herbivory damage to woody vegetation live stakes planted in a metropolitan habitat restoration site. A recently developed nutria multiple-capture cage trap captured larger nutria and reduced non-target captures compared to a standard cage trap. The design of the multiple-capture trap, however, prevented multiple-capture events because small nutria escaped the trap. This research contributes substantially to previously limited information about nutria in the Pacific Northwest and resulted in several new findings. Climate change modeling provides the first evidence that nutria ranges could expand in the near future. Evaluation of new radio-telemetry methods will benefit future behavior studies. The assessment of new damage prevention tools provides more options for the management of nutria in urban habitats. Management recommendations include creating regional nutria management plans, identifying and targeting priority monitoring regions, finding key stakeholders, focusing on public education, and initiating a pilot control program. Recommendations for research include evaluating effects on native fauna, conducting disease surveys, assessing the extent of damage, continuing habitat suitability analysis, and developing population indices. Close

• 10. [Article] Netarts Bay, Oregon: an assessment of human impact on an estuarine system

  Problems associated with planning the future use of estuarine areas stem from: A lack of knowledge on the critical aspects of the system. Inability to predict the future changes which will occur within ...

  Citation × Citation Citation Abstract Copy Title: Netarts Bay, Oregon: an assessment of human impact on an estuarine system Author: McCallum, Larry D. Year: 1977 Problems associated with planning the future use of estuarine areas stem from: A lack of knowledge on the critical aspects of the system. Inability to predict the future changes which will occur within the system in order to effectively manage the resource base. These difficulties lie in the fact that changes within the system occur because of both "natural" and "cultural" conditions. The thesis hypothesis and subsequent research is to describe the physical changes that have occurred within the Netarts system, primarily due to man's impact. Types of data gathered for the analysis includes that on historical and current land use activities, current research findings on system characteristics, and independent research on shoreline changes and vegetation composition. Much of the historical data were taken from early manuscripts and publications. Current research data were obtained from several engineering studies of the bay, as well as a baseline study of Netarts funded by a grant from the National Science Foundation and Oregon State University. This study included an inventory of man's utilization of the resource base. Methods utilized in data analysis included aerial photo-interpretation, planimetric measurement of shoreline and vegetative alterations, and on-site inventory of current shoreline and vegetation changes. Results of the research have shown that it is possible to measure and describe changes within the Netarts Bay system. Specific findings include: A decrease in sandspit volume of nine percent between 1942 and 1974 due to construction of a boat basin and fill. Occurrence of marsh progradation in all marsh areas with sedge and low sand type showing the greatest increases between 1939-1962. A decrease in rate of marsh progradation from 1962-1974. A total decrease in tidal prism of the bay between 1957-1969 as measured by cross sectional areas. The rate of decrease is occurring at a faster rate south of the mouth of Whiskey Creek. Destruction of Chum salmon fisheries and native oyster populations due to over-harvesting and siltation. Destruction of Gaper clam beds along the eastern shore of the bay and increased erosion of the shore, due to road fill and road construction. The results of the research and subsequent findings show that it is possible to describe an estuary as a "system" that has applicability for future development of a land and water use model for an estuary. Title: Netarts Bay, Oregon: an assessment of human impact on an estuarine system Author: McCallum, Larry D. Year: 1977 Problems associated with planning the future use of estuarine areas stem from: A lack of knowledge on the critical aspects of the system. Inability to predict the future changes which will occur within the system in order to effectively manage the resource base. These difficulties lie in the fact that changes within the system occur because of both "natural" and "cultural" conditions. The thesis hypothesis and subsequent research is to describe the physical changes that have occurred within the Netarts system, primarily due to man's impact. Types of data gathered for the analysis includes that on historical and current land use activities, current research findings on system characteristics, and independent research on shoreline changes and vegetation composition. Much of the historical data were taken from early manuscripts and publications. Current research data were obtained from several engineering studies of the bay, as well as a baseline study of Netarts funded by a grant from the National Science Foundation and Oregon State University. This study included an inventory of man's utilization of the resource base. Methods utilized in data analysis included aerial photo-interpretation, planimetric measurement of shoreline and vegetative alterations, and on-site inventory of current shoreline and vegetation changes. Results of the research have shown that it is possible to measure and describe changes within the Netarts Bay system. Specific findings include: A decrease in sandspit volume of nine percent between 1942 and 1974 due to construction of a boat basin and fill. Occurrence of marsh progradation in all marsh areas with sedge and low sand type showing the greatest increases between 1939-1962. A decrease in rate of marsh progradation from 1962-1974. A total decrease in tidal prism of the bay between 1957-1969 as measured by cross sectional areas. The rate of decrease is occurring at a faster rate south of the mouth of Whiskey Creek. Destruction of Chum salmon fisheries and native oyster populations due to over-harvesting and siltation. Destruction of Gaper clam beds along the eastern shore of the bay and increased erosion of the shore, due to road fill and road construction. The results of the research and subsequent findings show that it is possible to describe an estuary as a "system" that has applicability for future development of a land and water use model for an estuary. Close