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Articles 1 - 30 of 94
Full-Text Articles in Forest Sciences
Bryophyte (Sl) Growth And Environmental Factors Along An Altitudinal Gradient On Cerro Gaital, El Valle, Coclé, Panamá, Julian Grace-Martin
Bryophyte (Sl) Growth And Environmental Factors Along An Altitudinal Gradient On Cerro Gaital, El Valle, Coclé, Panamá, Julian Grace-Martin
Independent Study Project (ISP) Collection
Research on bryophytes (SL) in the tropics has been lacking compared with the high number of species found there and the potential benefit of bryophytes (SL) as indicators of pollutants and other forms of human disturbance. This study investigated whether or not bryophyte (SL) growth patterns showed relation when compared with environmental factors on the mountain Cerro Gaital in El Valley, Panamá. Whether or not bryophytes (SL) are present, extent of the area covered by their growth, and height of their growth are all aspects of bryophyte (SL) growth that were used. In this study, these three aspects are compared …
Intelligence Versus Inferno: How Artificial Intelligence Can Be Used To Monitor And Manage Wildfires In Europe, Maxwell Feldman
Intelligence Versus Inferno: How Artificial Intelligence Can Be Used To Monitor And Manage Wildfires In Europe, Maxwell Feldman
Independent Study Project (ISP) Collection
Escalating wildfire occurrences in Europe, particularly in the southern Mediterranean region, are presenting significant challenges to socioeconomic, environmental, and ecosystem services. The increasing frequency and severity of these wildfires are straining resources and emphasizing the need for a better understanding of the relationship between suppression capacity and fire behavior in wildfire management. The following research addresses the urgent need for more proactive, knowledge-based, and technologically driven fire management strategies, throughout all four stages of wildfire response – fuel and land management, fire preparedness, fire suppression, and post-fire management. Artificial Intelligence (AI) is becoming increasingly significant in climate change adaptation, especially …
Soil Succession: Short And Long-Term Impacts Of Grazing On Soil Properties In A Tropical Montane Cloud Forest, June Curtis
Soil Succession: Short And Long-Term Impacts Of Grazing On Soil Properties In A Tropical Montane Cloud Forest, June Curtis
Independent Study Project (ISP) Collection
Cattle ranching is the leading cause of deforestation in South America, causing long-lasting alterations to the continent's landscape and ecology. Tropical montane cloud forests (TMCFs) are a rare ecosystem particularly vulnerable to the effects of land conversion to pasture, a process which has implications ranging from biodiversity loss to soil degradation. Grazing is known to significantly alter soils' physical structure through processes of compaction and erosion as well as significant additions of organic matter. Silvopasture, or the integration of pasture and forest, has emerged as an alternative to traditional grazing practices with the hope of mitigating environmental and soil degradation. …
Bryophyta Sensu Stricto Presence And Function In The Epiphytic Ecosystems Of The Tropical Montane Cloud Forests Of El Valle De Anton, Teaghan Duff
Independent Study Project (ISP) Collection
Bryophyta sensu stricto, colloquially known as moss, is often found growing epiphytically in cloud forest ecosystems. Under these conditions, moss may fulfill a secondary foundational species (FS) role, supporting increased habitat for other organisms while remaining dependent on the primary FS host tree. Exploring the dual relationship of moss as both a dependent and supportive organism allows for better understanding of its connective role within ecosystems. Research in the cloud forests of El Valle de Anton focused on relative abundance, environmental surroundings, morphology, and microclimate of mosses to offer baseline data on these connections. Mosses along four different trails within …
Variation Of Carbon Stock Of Boca Del Drago Mangrove Forests Based On Salinity And Seaward Proximity, Fiona Wyrtzen
Variation Of Carbon Stock Of Boca Del Drago Mangrove Forests Based On Salinity And Seaward Proximity, Fiona Wyrtzen
Independent Study Project (ISP) Collection
Mangrove forests, at the intersection of land and sea, are considered one of the most important marine environments for their variety of ecosystem services and their ability to sequester large amounts of carbon in their biomass and adjacent soils. With a changing climate, many of the abiotic and biotic factors influencing mangroves will begin to shift, potentially impacting resilience, growth capacity, and distribution of mangroves worldwide. This study aimed to examine the influence of changing salinity on the carbon stock capacity for Rhizophora mangle and Laguncularia racemosa forests, and the distribution of biomass in each species relative to salinity in …
Mycorrhizal Fungi And Reforestation In An Eastern Lowland Rainforest Of Madagascar, Sophia Gibby
Mycorrhizal Fungi And Reforestation In An Eastern Lowland Rainforest Of Madagascar, Sophia Gibby
Independent Study Project (ISP) Collection
Most terrestrial plants worldwide make associations with mycorrhizal fungi, yet the fungal diversity of Madagascar is vastly unknown. This research project is a preliminary investigation into the mycorrhizal status of 19 tree species in and near Ranomafana National Park (RNP), a lowland tropical forest on the southeast coast of Madagascar. Arbuscular mycorrhizal (AM) colonization in these species was studied in root samples under the microscope in the laboratory of Centre ValBio (CVB). The degree of AM infection was assessed for three study areas: one directly adjacent to a protected area and two reforestation sites supported by CVB. For the 19 …
Community Participation And Perspectives Of Ambondrolava Mangrove Restoration Project, Nadine Shannon
Community Participation And Perspectives Of Ambondrolava Mangrove Restoration Project, Nadine Shannon
Independent Study Project (ISP) Collection
Madagascar’s mangrove forests are intertidal ecosystems that provide numerous valuable ecosystem services but are nonetheless under pressure from large amounts of deforestation. On the southwestern coast of Madagascar, the village of Ambondrolava practices community led management of the mangrove and its resources. This research project studied the evolution of the mangrove area using GIS data, and investigated, through interviews, the relationship between the local community of Ambondrolava and the organizations that manage the mangrove ecosystem. From 2000 to 2018, the zone of the mangrove has experienced a net loss in area every year, despite reforestation efforts. Most community members interviewed …
Variation In The Growth Parameters And Biomass Of Rhizophora Mangle Seedlings With Distances From Playa Estrella, Bocas Del Toro, Panama, Thiny Tep
Independent Study Project (ISP) Collection
Mangrove is a salt-tolerant, intertidal, tropical tree or shrub and make up a rich community of various organism. On the Caribbean coast of Panama, in Bocas del Toro, mangrove forests cover 28 km2 and are dominated by R. mangle, followed by L. racemosa and A. germinans. Simultaneously, Isla Colón, the most populated and developed among all islands in the Bocas del Toro Archipelago, is a tourist center. Unfortunately, tourism comes at the price of environmental degradation via alteration of natural habitats, solid and wastewater pollution. Therefore, this study aims to gain a preliminary understanding on how the …
Agroforestry For The Future: Motivations Behind Tasmanian Farmers Planting Trees, Josh Lipp
Agroforestry For The Future: Motivations Behind Tasmanian Farmers Planting Trees, Josh Lipp
Independent Study Project (ISP) Collection
Agroforestry is the act of combining farming and tree planting, and many Tasmanian farmers are starting to plant trees on their properties for multiple reasons. Through conducting 9 interviews with farmers and researchers and visiting field sites, 3 main themes were identified to answer the question: why are Tasmanian farmers planting trees, and what are the benefits and downsides to agroforestry? Interviews help us understand farmers’ perceptions of agroforestry, and field data collection will prove the benefits of agroforestry in the future. Tasmania was chosen as the location of study as it is a state in Australia that largely focuses …
A Comparative Plague Study Of Cacao Fungal Disease In Cacao Pods Within Monocultures And Indigenous Agroforests In Ecuador’S Napo Province, Seamus Mccarthy
A Comparative Plague Study Of Cacao Fungal Disease In Cacao Pods Within Monocultures And Indigenous Agroforests In Ecuador’S Napo Province, Seamus Mccarthy
Independent Study Project (ISP) Collection
This study analyzes the composition of three major fungal diseases in Theobroma cacao fruits compared between monocultures and chakra agroforests in the Napo province of Ecuador with the goal of noting similarities and differences in the disease composition between the two systems, as well as investigate possible variation within this poorly understood category of agroforest to better structure future studies. Cacao pods on sampled trees were counted and fungal infections identified visually and by touch. Chakra systems were selected in the communities of Cinco de Enero and Seis de Marzo to the Southwest of Tena, Ecuador. Monoculture data was collected …
Understory Epiphyte Hydrology: Analyzing Water Storage Capacity Of Epiphytes Along An Elevational Gradient In Western Ecuadorian Cloud Forest, Angelina Dodge
Understory Epiphyte Hydrology: Analyzing Water Storage Capacity Of Epiphytes Along An Elevational Gradient In Western Ecuadorian Cloud Forest, Angelina Dodge
Independent Study Project (ISP) Collection
Epiphytes are defined as plants that grow on a host, often another plant, and acquire their nutrients and water from the atmosphere. As such is true, epiphyte composition is largely dependent upon atmospheric and thus climactic conditions. Due to high levels of atmospheric water availability that results from the frequent presence of mist, clouds, and high humidity, epiphytic plants grow and thus store water within the above ground region of the Andean cloud forest at levels higher than in any other ecosystem found in Ecuador. This study was done in hopes of revealing any trends of epiphytic water storage capacity …
Tropical Tree Carbon Storage At Drago Dos Forest In Boca Del Drago, Panama, Ben Dwyer
Tropical Tree Carbon Storage At Drago Dos Forest In Boca Del Drago, Panama, Ben Dwyer
Independent Study Project (ISP) Collection
Currently, anthropogenic carbon emissions pose a significant, global threat, contributing to Global Warming and Climate Change (CC). Today, the most effective carbon sinks are natural. Trees are highly effective carbon sinks that sequester large amounts of atmospheric carbon dioxide (CO2), most greatly in tropical areas. However, tropical tree carbon storage needs to be more accurately estimated to provide valuable information toward mitigating CC and its negative environmental effects. This study aimed to estimate CO2 sequestration at a tropical forest in Boca Del Drago, Panama, and compare it to that of a nearby mangrove forest. It was hypothesized that the tropical …
Troop Composition And Behavior Of Mantled Howler Monkeys (Alouatta Palliata) In Mangroves And Forested Islands South Of David, Panama, Slate Hyacinthe
Troop Composition And Behavior Of Mantled Howler Monkeys (Alouatta Palliata) In Mangroves And Forested Islands South Of David, Panama, Slate Hyacinthe
Independent Study Project (ISP) Collection
The mantled howler monkey, Alouatta palliata, is one of the most commonly studied and widely distributed primate species in Central America. They have been reported to inhabit mangrove environments in Panama, but few studies have undertaken to describe their demography and behavior in these particular ecosystems. For my study, I spent 12 days studying A. palliata populations in both the mangrove and forested island ecosystems (Isla Parida and Isla Boca Brava) south of David. Seven groups were found in the mangrove environments, and 11 groups were found on the island environments. The mangrove groups were significantly smaller and at a …
Afforestation And Biodiversity: Bryophyte Richness Changes Between Icelandic Forest Types, Kian Mcdonough
Afforestation And Biodiversity: Bryophyte Richness Changes Between Icelandic Forest Types, Kian Mcdonough
Independent Study Project (ISP) Collection
Forest-dwelling bryophytes (mosses, liverworts, hornworts) greatly contribute to biodiversity and ecosystem function but are largely under-studied in comparison to vascular plants. With Iceland’s large-scale afforestation efforts there is a need to understand how different afforestation species are affecting biodiversity, including bryophyte diversity. This study looked at differences in ground-floor bryophyte richness across Sitka spruce, lodgepole pine, and downy birch forests and found that bryophyte richness was highest in the Sitka spruce forests and lowest in downy birch forests. While this suggests a negative correlation between bryophyte richness and light availability, since the conifer species have the densest copy cover, other …
What’S At “Steak”: The Drivers Of Deforestation In The Brazilian Amazon And Potential Multilateral Solutions, Soleil Gaylord
What’S At “Steak”: The Drivers Of Deforestation In The Brazilian Amazon And Potential Multilateral Solutions, Soleil Gaylord
Independent Study Project (ISP) Collection
This paper examines the contemporary drivers of deforestation in the Brazilian Legal Amazon and how multilateral solutions can be employed to bring forest loss to zero. Insights from the scholarly literature and five expert interviews allow a critical assessment of how the rise of unilateralism presents a novel threat to the Brazilian Legal Amazon and, by proxy, those relying on the region’s raw resources and ecosystem services. Integrating analyses of both Brazilian institutional structures and global environmental governance frameworks, this study examines the primary historical and contemporary factors driving accelerated deforestation rates observed under Brazil’s President Jair Bolsonaro. In identifying …
The Role Of Frugivorous Birds As Seed Dispersers: Feeding Selection And Preference Of Madagascar’S Avian Frugivores In Analamazaotra Forest, Thaddeus Bashaw
The Role Of Frugivorous Birds As Seed Dispersers: Feeding Selection And Preference Of Madagascar’S Avian Frugivores In Analamazaotra Forest, Thaddeus Bashaw
Independent Study Project (ISP) Collection
Madagascar is a country rich in floral and faunal diversity. However, anthropogenic habitat destruction and climate change increasingly threaten its biodiversity. Endozoochorous plants that dependent on frugivory for seed dispersal are under threat due to increasing rates of localized extinctions of frugivorous lemurs, the primary seed dispersers of the island. While lemurs are the islands most abundant frugivores, other frugivorous vertebrates like birds and bats likely play a significant role in seed dispersal, although this role is still poorly understood. This study, conducted in Analamazaotra forest, compares the rates of visitation and consumption of six endemic fruiting tree species by …
Laguncularia Racemosa Top-Layer Sediment Microorganism Makeup In Relation To Differing Levels Of Perceived Anthropogenic Impact In Bocas Del Drago, Bocas Del Toro, Panama, Gabrielle Glendening
Laguncularia Racemosa Top-Layer Sediment Microorganism Makeup In Relation To Differing Levels Of Perceived Anthropogenic Impact In Bocas Del Drago, Bocas Del Toro, Panama, Gabrielle Glendening
Independent Study Project (ISP) Collection
As mangrove forests are destroyed by human factors across the earth, many crucial ecological processes that take place in these systems of trees are obstructed. One of the most important roles played by mangroves is their ability to sequester carbon in the sediment, as this storage of carbon helps diminish atmospheric warming. Many sediment microorganisms help in this process of carbon sequestration and play various other vital roles in mangrove ecosystems. Microorganisms in marine sediments can be used to assess the health of the surrounding environment. Past research has found significant differences in sediment microorganism composition, abundance, and diversity in …
Observational Study Of Woolly Monkey Behavior And Vocalizations: Behavioral Time Allotment And Vocalization Habits Of A Small Population Of Poeppig’S Woolly Monkey (Lagothrix Lagotricha Poeppigii) In The Ecuadorian Amazon, Marina Smith-Hanke
Independent Study Project (ISP) Collection
Poeppig’s woolly monkey (Lagothrix lagotricha poeppigii), a species of primate native to the Amazonian regions of western Brazil, eastern Ecuador, and northeastern Peru, is classified as endangered by the IUCN. These large, frugivorous primates are threatened by habitat loss and climate change as a result of human interference. Deforestation, hunting, petroleum mining, and illegal trafficking are all huge threats to this species. As a result of these pressures, their populations have decreased by at least 30% over the past three generations. However, as keystone seed dispersers, they are essential for Amazonian ecosystem health; without their seed dispersal services, a loss …
How Elevation Affects Epiphyte Distribution: An Analysis In Epiphyte Distribution Changes At Different Elevations And Tree Strata In Santa Lucia Cloud Forest Reserve, Ecuador, Nicole L. Melnick
Independent Study Project (ISP) Collection
Cloud forests are unique ecosystems due to their tropical nature, high elevations, and extremely high presence of epiphytes that serve many important roles for the ecosystem’s biotic and abiotic components. As epiphytes can make up anywhere from one-quarter (Foster 2001) to a half (Gómez González et al. 2017) of all local plant species in cloud forests, it is essential to understand how their habitat distributions change with elevation and whether climate change will have a significant effect on that. This study used observational survey methods to record the amount of monocots (separately counted bromeliads and orchids), dicots, ferns, and percent …
Creating Sustainable Biofuels Using Essential Oil Distillery Leaf Waste Near Vohimana Reserve, Ashley Cohen
Creating Sustainable Biofuels Using Essential Oil Distillery Leaf Waste Near Vohimana Reserve, Ashley Cohen
Independent Study Project (ISP) Collection
Like most of Madagasacar’s population, people around Vohimana Reserve rely on traditional fuels like firewood and charcoal for cooking and heating. As a result, the region is facing deforestation, which poses a threat to biodiversity and the livelihoods of local populations. A local essential oil distillery was created by the NGO L’Homme et L’Environnement as a sustainable income generator to combat deforestation and protect biodiversity. The distillery produces leaf biomass that can be mixed with binding agent(s) and transformed into biofuel as a sustainable alternative to traditional fuels. 14 biofuels were created by combining distillery leaf biomass and various percent …
A Quantitative Study Of Orchids And Their Proximate Environments Over An Elevational Gradient On The Northern Slope Of Montagne D’Ambre, Hazel Schrader
A Quantitative Study Of Orchids And Their Proximate Environments Over An Elevational Gradient On The Northern Slope Of Montagne D’Ambre, Hazel Schrader
Independent Study Project (ISP) Collection
This research investigated change in orchid populations and their proximate environments on the Northern slope of Montagne d’Ambre, a subhumid forest in Northern Madagascar. Orchid density, way of life (epiphyte or terrestrial), phenology, and associations were recorded over 100m elevation gradients and between forest types (primary, secondary, dry, and humid forests at the same altitude). Additionally, orchid preferences for certain heights in the forest and DBH of host trees were analyzed. The establishment of 50X20m plots in 100m elevation gradients combined with ground survey yielded significant results demonstrating change along with elevation as well as forest types. Orchid density increased …
Conservation And Variation In Agricultural Landscapes: A Survey Of Insect Populations Across Naranjilla Cultivation Methods In The Eastern Andean Cloud Forest, Ian Zakelj
Independent Study Project (ISP) Collection
This study compared insect biodiversity among five sites in agricultural landscapes and natural forest in the El Placer community in the valley of the Rio Pastaza in the eastern Andean cloud forest. The area is of vital importance to conservation, as it falls in the ecological corridor between the Sangay and Llanganates national parks. The primary crop produced by the residents of El Placer is naranjilla, and it is cultivated in a variety of manners, mostly with intensive chemical use. The goal of the study was to find out which types of practices were the least harmful to the insect …
From River To Ridge: The Influence Of Elevation And Habitat On Herpetofauna Species Abundance And Diversity In The Llanganates-Sangay Ecological Corridor, Ecuador, Elle Hankin
Independent Study Project (ISP) Collection
Ecuador is one of the most reptile-diverse countries and is home to the highest abundance of amphibians per unit area, with new species being discovered frequently. The Río Pastaza basin is located to the east of the Andes and is characterized by a steep elevational gradient, converging tropical forest types, and high levels of biodiversity and endemicity. Visual surveying was conducted at night for a total of 48 hours in four different study sites to investigate the influence of elevation and habitat on herpetofauna diversity and abundance. Two comparisons were drawn between the four study sites, grouping SKIS and Waska …
Comparing Amphibian Species Diversity And Abundance In Natural Forest And Cacao Agroforest At Finca La Magnita, Changuinola, Bocas Del Toro, Panamá Lake Barrett, Lake Barrett
Independent Study Project (ISP) Collection
Amphibians are currently undergoing rapid and drastic biodiversity loss worldwide, largely due to the disease Chytridiomycosis. Because of this, efforts to conserve amphibian biodiversity are urgent and have been given increasing importance. However, studies investigating the effectiveness of agroforestry systems, a commonly used agricultural method in which trees and other elements of forests are retained on land used for agriculture, for amphibian conservation are uncommon. As a result, the capacity of agroforests to serve as a tool for amphibian conservation is unclear. To determine if agroforests can serve as a habitat for amphibians and a tool for their conservation, this …
A Ladder Of Endemicity: A Pioneering Study Of Anuran Communities Along An Elevational Gradient In The Eastern Andean Cloud Forests, Ecuador, Ella Halbert
Independent Study Project (ISP) Collection
Per unit of area, Ecuador is home to the most herpetofauna of any region on Earth, yet many ecosystems are under researched. Positioned between the Eastern Andes and the Amazon rainforest, the Río Pastaza Basin of Ecuador has been the recent focus of anuran biodiversity surveys and is home to many endemic species. This study aimed to determine how the anuran community composition of a vertical transect in the Llanganates National Park varied between elevations. A 7-day expedition was conducted along a new trail up Abitagua Range spanning 1,050 m in elevation. Each night, visual encounter surveys were employed to …
Public Perception Of Forest And Fire Management Policy In Portugal, Jensen Rocha
Public Perception Of Forest And Fire Management Policy In Portugal, Jensen Rocha
Independent Study Project (ISP) Collection
The impacts of forest fires are growing as climate change creates more frequent ideal temperature conditions for extreme wildfires. With the devastating fires it experienced in 2017, Portugal stands as an example of the impacts of dangerous wildfires and is working on developing a plan to protect its country from this rising threat. Important in the plan development is the opinion of the many stakeholders involved and the public whom the fires impact. Using an interview and survey approach, this study gathers public and stakeholder opinion on the forest and fire management policy in Portugal to understand what issues in …
Investigating The Impact Of Land Use On Avian Diversity And Abundance In Areas Surrounding Mabamba Swamp, Uganda, Sydney Marie Jones
Investigating The Impact Of Land Use On Avian Diversity And Abundance In Areas Surrounding Mabamba Swamp, Uganda, Sydney Marie Jones
Independent Study Project (ISP) Collection
The primary objective of this study was to investigate the impact of wetland-adjacent land use on avian species richness and abundance areas surrounding Mabamba Swamp, Uganda. Four types of land use were investigated: Eucalyptus plantations, wetland-edge agricultural fields, residential areas, and mature secondary forests. A total of 40-morning point counts were conducted for ten days in late November and late December of 2021. One-way ANOVA tests and Tukey’s HSD tests revealed significant differences in mean avian richness and abundance between all sites except residential areas and Nkima Forest. Additionally, Nkima Forest was found to contain the most number of specialist …
Assessing And Mapping The Spatial-Temporal Change In Forest Phenology Of Arabuko-Sokoke Forest Using Moderate Resolution Satellite, Bailey Ytterdahl
Assessing And Mapping The Spatial-Temporal Change In Forest Phenology Of Arabuko-Sokoke Forest Using Moderate Resolution Satellite, Bailey Ytterdahl
Independent Study Project (ISP) Collection
This study focuses on coastal forests in Kenya that have some of the highest variety of flora and fauna, specifically Arabuko Sokoke Forest. Arabuko Sokoke Forest is located 110 miles north of Mombasa and 18 kilometers south of Malindi. This forest is known to be a worldwide biodiversity hotspot that is home to endemic and rare plants and animals. Within the Arabuko Sokoke Forest ecosystem, there are two main issues that challenge the conservation of the area. First, there has been more competition for land, primarily for agriculture and development. Second, there is an increase demand for forest resources due …
An Apex Predator In Peril In The Western Lowlands Of Ecuador: Mapping The Population Distribution Of Harpy Eagles (Harpia Harpyja) In A Highly Deforested Region, Samuel Zhang
Independent Study Project (ISP) Collection
The Harpy Eagle (Harpia harpyja) is a highly threatened bird of prey in Ecuador. While they are already elusive in the Ecuadorian Amazon, they are even lesser known in the coastal lowlands, and their existence is threatened by rapid deforestation. This study mapped their potential distribution by examining satellite images to find intact humid forest, their ideal habitat. Habitat areas were quantified using ImageJ. The only sites found to be adequate for sustaining Harpy Eagle populations were the primary forests in the vicinities of Reserva Ecológica Mache Chindul and Reserva Ecológica Cotacachi Cayapas. The two reserves are expected to be …
The Relationship Between Forest Management And Stream Discharge In Mazumbai And Baga Ii Forest Reserves, Tanga Region, Tanzania, Shannon Duffy
The Relationship Between Forest Management And Stream Discharge In Mazumbai And Baga Ii Forest Reserves, Tanga Region, Tanzania, Shannon Duffy
Independent Study Project (ISP) Collection
Deforestation is known to alter hydrology by reducing interception, transpiration and infiltration capacity, and increasing runoff which all leads to higher stream discharge. For rural Tanzanian communities, surface water resources are crucial for meeting basic needs, so the integrity of headwater catchments need to be maintained to ensure their reliability. The objectives of this study were to a) map the streams in the two forests because none currently exist and b) determine the effect of deforestation on discharge variability. Over fifteen days of data collection, this study analyzed variability of discharge and the degree of correlation between discharge and rainfall …