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Articles 1 - 30 of 41
Full-Text Articles in Forest Sciences
Economic Contribution Of The Agricultural Sector To The Arkansas Economy In 2015, Leah English, Jennie Popp, Wayne Miller
Economic Contribution Of The Agricultural Sector To The Arkansas Economy In 2015, Leah English, Jennie Popp, Wayne Miller
Research Reports and Research Bulletins
Agriculture and associated agricultural activities are major contributors to the Arkansas economy. Agriculture is defined as the sum of agricultural production and processing activities, unless otherwise specified, and includes crop and animal production and processing, agricultural support industries, forestry and forest products, and textile goods. Agriculture contributes to the economy through direct agricultural production and value-added processing, and also leads to economic activity in other parts of the economy. This report is the tenth in a series of reports examining agriculture’s economic contribution to the Arkansas economy. The total economic contribution of agriculture (direct, indirect, and induced effects) on value …
Greening The Gateway Cities: Summer Internship With The Clark University Human Environment Regional Observatory (Hero) And Massachusetts Department Of Conservation And Recreation (Dcr), Zhiwen Zhu
International Development, Community and Environment (IDCE)
This report provides a detailed account of my internship experience with the Clark University Human-Environment Regional Observatory (HERO) and Massachusetts Department of Conservation and Recreation (DCR) in the summer of 2017. This internship concerns the urban tree health assessment in three ‘Greening the Gateway’ cities in Massachusetts. During the internship, I conducted tree survey field work, database management, mapping, tree survey data analysis and urban tree plantation benefits microclimate simulation. During the internship I worked with the professors and students at Clark University and University of Massachusetts, Amherst, and the staff from Department of Conservation and Recreation (DCR), Worcester Tree …
Ecological Succession On Neotropical Landslides: Comparing Successional Patterns Of Four Different Aged Landslides In The Cerro Candelaria Reserve, Nace Keifer
Independent Study Project (ISP) Collection
Abstract In an area that is vulnerable to frequent landslides due to steep montane slopes and heavy rain falls it is important to understand how the ecosystem regenerates after it has been disturbed. This study examined ecological succession patterns by comparing the vegetation on four different aged landslides and the unharmed forest within the Cerro Candelaria Reserve, located in a cloud forest ecosystem in central Ecuador. One meter soil profiles and 5x5 meter vegetation quadrats were used to observe and characterize the habitats on the four individual landslides and unharmed forest. At each location, soil color, texture, and structure were …
Community Management And Governance Of Comatsa-Sud New Protected Area (Ambalamanasy Ii Commune), Allison Tennant
Community Management And Governance Of Comatsa-Sud New Protected Area (Ambalamanasy Ii Commune), Allison Tennant
Independent Study Project (ISP) Collection
Community-based natural resource management is an increasingly more popular choice for governments to delegate power back to local communities to conserve the resources they rely on. In Madagascar, where much of the rural population provides for their livelihoods by using natural resources, this governance structure, in cooperation with delegated manager for assistance, presents an opportunity for economic development in cooperation with conservation efforts. This paper aims to better understand the role of community, NGO, and governmental actors in creating and executing community management structures. Through Participatory Rural Analysis and structured and semi-structured interviews, it explores what management transfers look like …
Prevalence Of Moniliophthora Roreri In Theobroma Cacao In Relation To Clone Variety, Community Composition, Environmental Factors In An Organic Cacao Farm In Charagre, Bocas Del Toro, Panamá: A Case Study, Kara Eckberg
Independent Study Project (ISP) Collection
Moniliophthora roreri, or Frosty Pod Rot (FPR) is a widespread pathogen that affects the fruit of Theobroma cacao, a tree commonly known as the cacao tree. Often, cultivators seek to control spread of M. roreri through fungicidal compounds. However, these fungicides place selective pressure for resistance on M. roreri. Additionally, they can have adverse environmental and human health effects and are difficult to integrate into practice for smallholders. Therefore organic farms in Bocas del Toro in western Panama, have turned to biocontrol agents to reduce the spread of M. roreri. These strategies include increasing hybrid variety, modifying community composition, altering …
A Study Of Reptile Community Diversity Related To Habitat Characteristics At Marojejy National Park, Julia Kowala
A Study Of Reptile Community Diversity Related To Habitat Characteristics At Marojejy National Park, Julia Kowala
Independent Study Project (ISP) Collection
Marojejy National Park is known for its diversity. Though it is home to the silky sifaka, it has extensive populations of herpetofauna. Seventy-seven species of reptiles have been documented in Marojejy National Park. This study aimed to evaluate the reptile community diversity and habitat characteristics in the park through systematic searches of ten-by-ten-meter plots, and inventory of species as they were found throughout the park. Systematic searches yielded the finding of 19 of the total 25 species identified. Some species that were found had not been previously seen at Marojejy before, most notably, Brookesia sp. “Nosy Hara”, Brookesia desperata, Furcifer …
Hummingbird Foraging Preference: The Hierarchical Impacts Of Color, Position, And Concentration On Visitation Frequency, Erin O'Connor
Hummingbird Foraging Preference: The Hierarchical Impacts Of Color, Position, And Concentration On Visitation Frequency, Erin O'Connor
Independent Study Project (ISP) Collection
Hummingbirds are well adapted to efficiently locate high quality nectar sources, but relatively few studies have examined the mechanisms of that process under natural conditions in the field. This study investigates the visual signals that allow hummingbirds to do just that, as well as the external factors that limit their choices in foraging. More specifically, feeder color and nectar concentration were manipulated to determine the effect of those independent variables on visitation frequency. An initial experiment was conducted in order to explore color preference among the visiting species. Red, orange, and blue feeders were filled with nectar of equal concentrations …
Survey Of Invasive Lantana Camara At Makirovana-Tsihomanaomby Forest Complex, Eliza Pessereau
Survey Of Invasive Lantana Camara At Makirovana-Tsihomanaomby Forest Complex, Eliza Pessereau
Independent Study Project (ISP) Collection
Lantana camara is a shrub known globally as an invasive pest that grows primarily in degraded areas. The species is known to exist at Makirovana-Tsihomanaomby, a forest complex in northeastern Madagascar with 167 endemic species of flora and fauna, several of which are on the IUCN Red List. The complex, specifically Tsihomanaomby forest, is used as a resource for the three rural communes that live on its outskirts, meaning that it experiences much human activity. The objective of this study was to survey the population of L. camara at two sites: one just outside of the Tsihomanaomby forest and one …
Counting Crabs: Assessment Of Mangrove Crab Diversity And Density Among Three Sites In Ushongo, Tanzania, Clarasophia Gust
Counting Crabs: Assessment Of Mangrove Crab Diversity And Density Among Three Sites In Ushongo, Tanzania, Clarasophia Gust
Independent Study Project (ISP) Collection
This study assessed the density and diversity of crabs across three mangrove forest zones in Ushongo, Tanzania. The aim was to understand variance in the composition and distribution of mangrove crabs in relation to mangrove tree composition gradients in the area. Sites were measured using a 200m line transect and 40-plot method. Data was also collected from a sand beach habitat to compare to the diversity and distribution of mangrove habitats. Diversity was analyzed using Simpson’s Index of Diversity and an ANOVA test on the average number of species found per plot in each site. Density was analyzed using an …
An Ethnobotanical Examination Of Traditional Medicine In Ngezi Forest Reserve, Tyler Tsang
An Ethnobotanical Examination Of Traditional Medicine In Ngezi Forest Reserve, Tyler Tsang
Independent Study Project (ISP) Collection
Traditional medicine is an important aspect of the both the culture and health of communities worldwide. Ngezi Forest Reserve is a protected area on Pemba Island which is part of the Zanzibar Archipelago. This forest contains a wealth of botanical diversity which includes many species of medicinal plants. Traditional healers (waganga) use these medicinal plants to heal members of the community. Interviews and forest walks with these healers were supplemented by consultations with a botanist to determine medicinal value of the forest and the surrounding areas. In compiling information from 15 healers in the area, 98 species of medicinal plants …
Carbon Sequestration In The Cloud Forest: A Comparative Evaluation Of Aboveground Biomass Carbon Stock Potential In The Río Guajalito Reserve, Elli Mapstone
Independent Study Project (ISP) Collection
As carbon dioxide levels in the atmosphere continue to rise at a rapid rate, it is necessary to understand how forests can both contribute to CO2 levels but also stop them from rising. Carbon sequestration levels in tropical montane cloud forests are a relatively understudied topic. Gathering carbon stock levels is the first step necessary to start a REDD+ project. Carbon stock levels can be studied on a global, regional or local level. This study used the University of Oxford/ Global Ecosystems Monitoring Network (GEM) methodology to examine carbon sequestration levels of aboveground biomass, specifically ground litter, large branches …
Walking As Ontological Shifter: Thoughts In The Key Of Life, Bibi (Silvina) Calderaro
Walking As Ontological Shifter: Thoughts In The Key Of Life, Bibi (Silvina) Calderaro
Dissertations, Theses, and Capstone Projects
With walking as ontological shifter I pursue an alternative to the dominant modernist episteme that offers either/or onto-epistemologies of opposition and their reifying engagements. I propose this type of walking is an intentional turning towards a set of radical positions that, as integrative aesthetic and therapeutic practice, brings multiplicity and synchronicity to experience and being in an expanded sociality. This practice facilitates the conditions of possibility for recurring points of contact between the interiority perceived as ‘body’ and the exteriority perceived as ‘world.’ While making evident the self’s at once incoherence with it-self, it opens to a space beyond the …
The Impact Weather Has On Nyc Citi Bike Share Company Activity, Mark Martinez
The Impact Weather Has On Nyc Citi Bike Share Company Activity, Mark Martinez
Journal of Environmental and Resource Economics at Colby
This paper seeks to figure out the effect weather has on individuals’ behavior. A more focused approach to determining this effect is seeing how different weather conditions ranging from the temperature, the precipitation, the amount of inches of snowfall and the wind speed effect the ridership of Citi Bikes throughout all four seasons. The approach of this research paper is using data from the National Climatic Data Center that focuses in on the weather found in Manhattan, New York and correlates each of the weather conditions to the total number of trips per day that is provided by the Citi …
The Effects From Public Transportation On Property Values: A Closer Look At Scituate, Hanover, And Norwell, Massachusetts, Alexandra Taylor Perticone, Christine S. Coveney
The Effects From Public Transportation On Property Values: A Closer Look At Scituate, Hanover, And Norwell, Massachusetts, Alexandra Taylor Perticone, Christine S. Coveney
Journal of Environmental and Resource Economics at Colby
Prior studies have expressed the value of location in real estate, but more recent studies have explored the influence that public transportation has had on housing prices. Access to public transportation is understood to increase the value of homes. Easier access to public transportation allows for shorter and more convenient commutes into or within cities. However, other studies have found that proximity to public transportation can also have adverse effects on property values. This paper investigates whether the implementation of the Greenbush Commuter line in Massachusetts in October 2007 increased the housing prices in Scituate, Ma--the furthest town from the …
Invited Introduction To Jerec, Matthew Kahn
Invited Introduction To Jerec, Matthew Kahn
Journal of Environmental and Resource Economics at Colby
No abstract provided.
Welcome By The Editor, Nathan W. Chan
Welcome By The Editor, Nathan W. Chan
Journal of Environmental and Resource Economics at Colby
No abstract provided.
Effect Of Spatial Influence On Endophyte Diversity Within Alnus Rubra, Sebastian L. Singleton
Effect Of Spatial Influence On Endophyte Diversity Within Alnus Rubra, Sebastian L. Singleton
Student Research Symposium
Red alders (Alnus rubra) of the Pacific Northwest are characterized as actinorhizal dicotyledons; plants that possess that ability to form symbiotic relationships with endophytic organisms, which result in nitrogen-fixing nodules. In Alders of the order Fagales, such a symbiotic relationship with Frankia bacteria allows these plants to play crucial environmental roles as pioneer species able to colonize and enrich nutrient-deficient soils. This ability has a major impact on ecological succession by enabling other species to establish. Although inoculation with frankia bacteria is known to increase symbiotic nitrogen fixation capabilities of actinorhizal plants, whether they could confer the same benefit to …
Seeing Community Through The Trees: Characterizing Resident Response To Urban-Tree Planting Initiatives, Eli Goldman
Seeing Community Through The Trees: Characterizing Resident Response To Urban-Tree Planting Initiatives, Eli Goldman
International Development, Community and Environment (IDCE)
Urban tree planting initiatives have become common across cities in the United States. In order to advocate for sustainable urban forests, managers of urban planting initiatives must adopt a strong community framework, which includes community values in reforestation efforts. Clark University researchers conducted interviews and surveys with residents in six central Massachusetts cities and towns to assess why residents value urban trees and to characterize public response to reforestation efforts. Results indicate residents had positive experiences with tree planting programs, are most likely to value urban trees for aesthetic reasons, and commonly associate change in neighborhood character with Asian Longhorned …
Ash Tree Identification Based On The Integration Of Hyperspectral Imagery And High-Density Lidar Data, Haijian Liu
Ash Tree Identification Based On The Integration Of Hyperspectral Imagery And High-Density Lidar Data, Haijian Liu
Theses and Dissertations
Monitoring and management of ash trees has become particularly important in recent years due to the heightened risk of attack from the invasive pest, the emerald ash borer (EAB). However, distinguishing ash from other deciduous trees can be challenging. Both hyperspectral imagery and Light detection and ranging (LiDAR) data are two valuable data sources that are often used for tree species classification. Hyperspectral imagery measures detailed spectral reflectance related to the biochemical properties of vegetation, while LiDAR data measures the three-dimensional structure of tree crowns related to morphological characteristics. Thus, the accuracy of vegetation classification may be improved by combining …
Motivation And Support For Regulatory Changes: A Typology Of Tennessee Wild Turkey Hunters, Cristina Elisa Maldonado
Motivation And Support For Regulatory Changes: A Typology Of Tennessee Wild Turkey Hunters, Cristina Elisa Maldonado
Masters Theses
Hunters form a diverse group with multiple motivations for seeking outdoor recreation experiences. A deeper understanding of hunters’ motivations may benefit wildlife managers in state agencies to cater services and regulations to meet the needs of this diverse group. To determine the motivations of wild turkey (Meleagris gallopavo) hunters in Tennessee, and their attitudes and preferences concerning turkey hunting and management, a self-administered questionnaire was developed and mailed to a sample of licensed Turkey hunters in Tennessee. A multivariate K-means cluster analysis was then applied to identify hunter typologies based on several motivation factors that were derived from …
Tennessee Valley Authority, Division Of Forestry (Sc 3100), Manuscripts & Folklife Archives
Tennessee Valley Authority, Division Of Forestry (Sc 3100), Manuscripts & Folklife Archives
MSS Finding Aids
Finding aid only for Manuscripts Small Collection 3100. Report on the forestry reconnaissance of the proposed Gilbertsville, Kentucky, reservoir area. Prepared by the Tennessee Valley Authority, Division of Forestry, November, 1936. Contains black and white photographs.
The Maine Chance: Private-Public Partnership And The Katahdin Woods And Waters National Monument, Char Miller
The Maine Chance: Private-Public Partnership And The Katahdin Woods And Waters National Monument, Char Miller
Pomona Faculty Publications and Research
The claim of a federal “land grab” in response to the creation of Katahdin Woods and Waters National Monument in Maine revealed a lack of historical awareness by critics of how two other cherished parks were established there: through private-public partnerships and the donation of land by private citizens.
Herpetoplogical Survey Across Three Distinct Habitats In Ankarana National Park: Long-Term Effects Of Past Land Use On Species Composition In And Around The Park, Julia Park
Independent Study Project (ISP) Collection
Ankarana National Park is home to a diverse population of herpetofauna. In this study, three distinct habitats in and around Ankarana National Park were surveyed for herpetological diversity. These habitats were defined as the deciduous forest located within the “tsingy” limestone karst canyons, the dry deciduous forest outside of the canyons, within the borders of the park, and the anthropogenically affected forest outside of the park’s borders, which is subject to logging and fruit tree harvesting. A total of 27 species of herpetofauna – six amphibian and 21 reptile species were found over the course of twelve days of surveying …
Decadal Vegetation Succession Along A Chronosequence Within Eucalyptus Obliqua Wet Forest, Southern Tasmania, Christine Dobbin
Decadal Vegetation Succession Along A Chronosequence Within Eucalyptus Obliqua Wet Forest, Southern Tasmania, Christine Dobbin
Independent Study Project (ISP) Collection
Southern Tasmania is home to fire dependent mixed forests, which, if not maintained, will eventually be replaced by the rainforest understorey. Wet eucalypt forest succession after disturbance events was investigated through floristic and vertical measurements of four north facing chronosequence plots with labels describing the age class of each, from regrowth to mature sites. This study was possible due to the establishment of permanent 50m x 50m plots in 2007 for longitudinal monitoring and subsequent illustration of forest dynamics following disturbance, including clearfell burns and wildfire. The contents of this report are the comparative analyses of the findings from the …
The Roles Of Activism And Citizen Science In The Area Covered By The East Gippsland Regional Forest Agreement, Ian Corbet
Independent Study Project (ISP) Collection
For this Independent Study Project, I have examined the roles of activism and citizen science under the East Gippsland Regional Forestry Act. I conducted the study in the hopes of understanding better how activists have contributed to the overall conservation of the forests of East Gippsland. As the government has recently extended the twenty year agreement for another year, I wanted to determine if the real stakeholders of the conservation movement were taken into account. I sought the perspectives of people involved in the either the administration, implementation or opposition to the RFA. This ended up being eight people in …
Monitoring Anuran Populations In Bosque Protector Candelaria: A Multi-Year Comparison Of Frog Populations In An Ecuadorian Cloud Forest, Mindee Goodrum
Monitoring Anuran Populations In Bosque Protector Candelaria: A Multi-Year Comparison Of Frog Populations In An Ecuadorian Cloud Forest, Mindee Goodrum
Independent Study Project (ISP) Collection
For many years, amphibian populations around the world have been declining due to climate change, habitat loss or change, and diseases such as Ranavirus or the Chytrid fungus. However, there is still a great lack of information regarding the diversity of frogs, especially in the cloud forests of Ecuador where this study was conducted. This study was conducted in April and May of 2017 in the Ecominga Reserve of Cerro Candelaria in El Placer, Ecuador. The objective was to conduct visual-encounter surveys of several sites in the reserve and compare the results to studies that have been conducted in the …
Variability In Above- And Belowground Carbon Stocks In A Siberian Larch Watershed, Elizabeth E. Webb, Kathryn Heard, Susan M. Natali, Andrew Godard Bunn, Heather D. Alexander, Logan T. Berner, Alexander Kholodov, Michael M. Loranty, John D. Schade, Valentin Spektor, Nikita Zimov
Variability In Above- And Belowground Carbon Stocks In A Siberian Larch Watershed, Elizabeth E. Webb, Kathryn Heard, Susan M. Natali, Andrew Godard Bunn, Heather D. Alexander, Logan T. Berner, Alexander Kholodov, Michael M. Loranty, John D. Schade, Valentin Spektor, Nikita Zimov
Environmental Sciences Faculty and Staff Publications
Permafrost soils store between 1330 and 1580Pg carbon (C), which is 3 times the amount of C in global vegetation, almost twice the amount of C in the atmosphere, and half of the global soil organic C pool. Despite the massive amount of C in permafrost, estimates of soil C storage in the high-latitude permafrost region are highly uncertain, primarily due to undersampling at all spatial scales; circumpolar soil C estimates lack sufficient continental spatial diversity, regional intensity, and replication at the field-site level. Siberian forests are particularly undersampled, yet the larch forests that dominate this region may store more …
Kentucky Forestry Economic Contribution Report 2016, Jeff Stringer, Billy Thomas, Bobby Ammerman, Thomas Ochuodho, Alison Davis
Kentucky Forestry Economic Contribution Report 2016, Jeff Stringer, Billy Thomas, Bobby Ammerman, Thomas Ochuodho, Alison Davis
Kentucky Forestry Economic Impact Reports
Forests play a pivotal role in Kentucky’s economy and in the lives of the citizens of our state. Forests are the single most dominant land type, covering nearly one-half of the state, providing a significant range of both economic and non-economic benefits to the Commonwealth. The majority of the economic contribution is derived from the harvesting of timber and processing of the wood resource. Analysis of Kentucky’s forest and wood industries in 2016 indicated an estimated direct economic contribution of $9 billion (down one percent from 2015). These industries employed over 27,700 individuals. Total economic contributions in 2016 were estimated …
Digital Preservation And Access Of Natural Resources Documents, David Kulhavy, R Philip Reynolds, Daniel Unger, Steven H. Bullard, Matthew W. Mcbroom
Digital Preservation And Access Of Natural Resources Documents, David Kulhavy, R Philip Reynolds, Daniel Unger, Steven H. Bullard, Matthew W. Mcbroom
Faculty Publications
Digitization and preservation of natural resource documents were reviewed and the current status of digitization presented for a North American university. It is important to present the status of the digitation process for natural resources and to advocate for increased collections of digital material for ease of reference and exchange of information. Digital collections need to include both published documents and ancillary material for research projects and data for future use and interpretation. The methods in this paper can be applied to other natural resource collections increasing their use and distribution. The process of decision making for documents and their …