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Articles 1 - 15 of 15
Full-Text Articles in Life Sciences
Reef Fish And Coral Assemblages On Hospital Point And Near Bastimentos Island, Panama, Elaine Shen
Reef Fish And Coral Assemblages On Hospital Point And Near Bastimentos Island, Panama, Elaine Shen
Independent Study Project (ISP) Collection
Because worldwide declines coral reef health are of major concern, studying coral reefs through the lens of conservation efforts at local scales is essential for determining and monitoring effective policy measures. In the Bocas del Toro Archipelago, there are conflicts of interest between exploitative rapid tourism development, overfishing practices, and national efforts to conserve the local marine biodiversity. Coral and reef fish species abundance richness, diversity, evenness, and similarity were measured to see how coral and reef fish assemblages changed between protected and unprotected areas. A total of 329 fish and 322.5 square meters of benthos were analyzed using underwater …
Live And Dead Coral Cover On Three Reefs And Public Perceptions Of Degradation Around Almirante Bay, Bocas Del Toro, Phoebe Thompson
Live And Dead Coral Cover On Three Reefs And Public Perceptions Of Degradation Around Almirante Bay, Bocas Del Toro, Phoebe Thompson
Independent Study Project (ISP) Collection
Almirante Bay is a lagoonal body of water off the western Caribbean coast of Panama. The islands within the bay are popular tourist destinations, drawing visitors from around the world to explore beaches and coral reefs. However, the reefs in Almirante Bay are continually exposed to both natural and anthropogenic stressors, such as temperature inversions, boat pollution, sedimentation from dredging, and chemical runoff from coastal banana plantations. Because the economy of the area is heavily dependent on tourism, this creates an interesting dynamic in that the main source of income (tourism) could be detrimental to a main attraction of the …
Benthic Algae And Diatom Communities In Seagrass Meadows Under Three Different Human Impact Regimes In Bocas Del Toro, Panamá, Averyl Cheng
Benthic Algae And Diatom Communities In Seagrass Meadows Under Three Different Human Impact Regimes In Bocas Del Toro, Panamá, Averyl Cheng
Independent Study Project (ISP) Collection
In Bocas del Toro, Panamá, widespread tourism has been the main source of revenue and has become an increasing threat to seagrass meadows and the organisms they support. This study aimed to investigate and describe algae and diatom communities under three different regimes of anthropogenic disturbance: high, medium and low human impact. The biodiversity was analyzed by measuring the algae and diatom assemblages with Shannon-Weiner’s Biodiversity Index, Evenness Index and Sorensen’s coefficient. The data obtained from these three diversity indices were compared to the areas along an anthropogenic disturbance gradient of high, medium and low impact. A total of 12 …
The Effects Of Sub-Lethal Predation On The Reproductive Output Of Acanthaster Planci (Crown-Of-Thorns Starfish), Emily Mucha
The Effects Of Sub-Lethal Predation On The Reproductive Output Of Acanthaster Planci (Crown-Of-Thorns Starfish), Emily Mucha
Independent Study Project (ISP) Collection
Wide-scale declines in live coral cover have been observed throughout history. Modern day coral populations face a multitude of environmental disturbances, however one of the most devastating to the reefs in the Indo-Pacific is the crown-of-thorns starfish (Acanthaster planci), which feeds on the tissues of live corals. The rate at which these individuals feed combined with the explosion of populations in times of outbreak have been seen to exert some of the biggest pressures on coral reefs to date. Following recent episodes of crown-of-thorns starfish (COTS) outbreaks, research on the organism has become increasingly prevalent on the scientific …
A Study Of Defensive Mechanisms Employed By Two Species Of Nudibranchs Using Toxicity And Unpalatability Analyses, Sean Youn
Independent Study Project (ISP) Collection
Nudibranchs are marine invertebrates that have developed an intriguing defense mechanism, including warning coloration and the use of chemicals accumulated through their sponge diet. The goal of this study was to determine whether the strength of chemical defenses differs between dietary and accumulated secondary metabolites for two species: Glossodoris vespa and Ceratosoma brevicaudatum. First, NMR spectroscopy was used to not only identify specific compounds in the mantle (outer covering) and the viscera (gut) but also to analyze the possibility of nudibranch species transporting more toxic compounds for defensive purposes. Next, toxicity (brine shrimp) and palatability (Palaemon shrimp) assays …
Beyond What Is Heard: A Documentary Film About Acoustic Ecology As Sustainability Activism, Jesse Rolfe
Beyond What Is Heard: A Documentary Film About Acoustic Ecology As Sustainability Activism, Jesse Rolfe
Independent Study Project (ISP) Collection
Acoustic ecology is an interdisciplinary field that studies the relationship between sounds, sound sources, and environment they exist within. From an environmental perspective, this involves a holistic consideration of ecosystems, and how the various organisms within that ecosystem, including humans, impact and interact with each other through sound. Biosphere Soundscapes, an international, interdisciplinary project directed by Australian acoustic ecologist Dr. Leah Barclay, operates to engage communities within UNESCO Biosphere Reserves through acoustic-ecological concepts, monitoring, and techniques. In November 2016, I undertook the process of creating a short documentary film entitled Beyond What is Heard, which aimed to explore how the …
The Effects Of Sub-Lethal Predation On The Reproductive Output Of Acanthaster Planci (Crown-Of-Thorns Starfish), Emily Mucha
The Effects Of Sub-Lethal Predation On The Reproductive Output Of Acanthaster Planci (Crown-Of-Thorns Starfish), Emily Mucha
Independent Study Project (ISP) Collection
Wide-scale declines in live coral cover have been observed throughout history. Modern day coral populations face a multitude of environmental disturbances, however one of the most devastating to the reefs in the Indo-Pacific is the crown-of-thorns starfish (Acanthaster planci), which feeds on the tissues of live corals. The rate at which these individuals feed combined with the explosion of populations in times of outbreak have been seen to exert some of the biggest pressures on coral reefs to date. Following recent episodes of crown-of-thorns starfish (COTS) outbreaks, research on the organism has become increasingly prevalent on the scientific …
Fish Diversity And Coral Health Of Tanzania's Reefs: A Comparative Study Between The Ushongo Village Reef And The Fungu Zinga Reef Over Time, Della Turque, Corinne Casper
Fish Diversity And Coral Health Of Tanzania's Reefs: A Comparative Study Between The Ushongo Village Reef And The Fungu Zinga Reef Over Time, Della Turque, Corinne Casper
Independent Study Project (ISP) Collection
The world’s oceans are becoming increasing acidic due to global climate change, posing a threat to marine ecosystems, including coral carbonate systems. Environmental threats are exacerbated by human development stressors as well: growing populations, dependency on marine resources, and unsustainable practices invaluable marine ecosystems at risk. Tanzania’s coral reef system extends for 3580 km2 (Muhando et al. 2008) near the Tanga region, serving over half a million people who are highly dependent on fishing and other marine resources as their livelihoods (Samoilys et. al. 2008). With Tanzania’s population rapidly growing, the unsustainable pressure on coral reefs for sustenance and livelihood …
Epigeal Fauna Of Bosque Protector Cerro Candelaria, Justine Albers
Epigeal Fauna Of Bosque Protector Cerro Candelaria, Justine Albers
Independent Study Project (ISP) Collection
Pitfall traps are commonly used to sample epigeal fauna, and are especially utilized for the collection of ground-dwelling arthropods; however, this sampling method has yet to be employed in Cerro Candelaria, a protected cloud forest reserve in Tungurahua, Ecuador. Pitfall trap systems were established at two different sites in the reserve that differed in elevation and forest type. Although individuals from 4 different phlya, 11 classes and 17 orders were encountered over the duration of the study, pitfalls were most effective at sampling Coleoptera, which comprised 40% of the total catch across both sites. The two communities of beetle …
Symbiont Type And Photophysiology Of Acropora Loripes And Platygyra Daedalea Under Future Scenarios Of Rising Ocean Temperatures And Pco2, Lauren Howe-Kerr
Symbiont Type And Photophysiology Of Acropora Loripes And Platygyra Daedalea Under Future Scenarios Of Rising Ocean Temperatures And Pco2, Lauren Howe-Kerr
Independent Study Project (ISP) Collection
Coral cover is declining at an alarming rate, and it is estimated that 60% of reefs worldwide may be lost by 2030. Elevated seawater temperatures and ocean acidification are contributing to an increase in the frequency and severity of bleaching events. These events disrupt the symbiosis between corals and their photosynthetic dinoflagellates (Symbiodinium spp). Relatively little is known about the ability of corals to acclimatize to changing environmental conditions or whether the rate of climate change is too fast for corals to keep up, limiting the accuracy of future predictions for reef resilience. However, the ability of some coral species …
Nesting Trends Of The Green (Chelonia Mydas) And Hawksbill (Eretmochelys Imbricata) Turtles On Misali Island, Pemba, Thaowan Giorno, Megan Herrmann
Nesting Trends Of The Green (Chelonia Mydas) And Hawksbill (Eretmochelys Imbricata) Turtles On Misali Island, Pemba, Thaowan Giorno, Megan Herrmann
Independent Study Project (ISP) Collection
Misali Island, one of the first conservation areas in Zanzibar, is considered an important nesting ground for the Green and Hawksbill turtles. This study was conducted to present results on the nesting and hatching trends on Misali Island by using data collected since 2002. Thorough statistical analyses were used on these data in order to find patterns in the nesting trends of these two species, and identify any significant differences that have occurred over the years. Overall, there has been a steady decline in the number of nesting and hatching events, but no statistically significant trends were found in terms …
Seagrass Community Change At Three High Risk Ports In The Great Barrier Reef World Heritage Area From 2005 To 2014, Celeste Venolia
Seagrass Community Change At Three High Risk Ports In The Great Barrier Reef World Heritage Area From 2005 To 2014, Celeste Venolia
Independent Study Project (ISP) Collection
Seagrass meadows are extremely valuable and dynamic ecosystems currently facing pressure from anthropogenic disturbances. Seagrass ecosystems are declining globally because of direct and indirect threats that shift environmental conditions controlling seagrass distribution. Seagrass species responses to disturbances vary based on a number of factors including life history strategy. The goal of this study was to map and analyze patterns of dominant seagrass species change at Cairns and Gladstone from 2005-2014 and Townsville from 2007-2014. This compilation data set was symbolized according to the life history strategy of the species. The major disturbances during this time period were physical damage from …
Nutrient Cycling In The Amazon: A Comparison Of Soil Characteristics, Insects, Root Types And Decomposition Rates Between Varzea And Terra Firme Habitats In The Ecuadorian Amazon, Mira Ensley-Field
Independent Study Project (ISP) Collection
Decomposition and nutrient cycling form the basis of every ecosystem. Nutrient availability in the soil affects plant species composition, richness, and productivity. The Amazon rainforest is known for its unusually fast nutrient cycle, but many aspects lack detailed study and analysis. This comparative study carried out in the Ecuadorian Amazon had four primary objectives related to understanding the nutrient cycle in the Amazon; 1.) analyze soil characteristics, 2.) assess insect diversity in the leaf litter layer, 3.) examine root characteristics, and 4.) measure the decomposition rate between Varzea and Terra Firme habitats alongside the Rio Napo. Forty 0.25 x 0.25m …
L’Insecte Sage In The Age Of Global Climate Crisis: A Biocultural And Ontological Study Of Vulnerability And Resilience In The Manakara Beekeeping Network, Tamar Law
Independent Study Project (ISP) Collection
The effects of climate change are felt unevenly throughout the globe. Impoverished populations with high levels of subsistence agriculture are particularly vulnerable due to their direct dependence on the land. However, these populations are also the possible agents of change and solutions, as their traditional ecological knowledge has evolved in relation to their context. The honeybee is directly implicated in climate change vulnerability due to its role in pollination services, by ensuring food security. In the past decade, honeybees have risen to international fame and scrutiny due to a global vanishing of bees, attributed in part to climate change and …
The Use Versus Availability Of Wood Extraction At The Baga Ii Forest Reserve Border Adjacent To Kizanda Village In The West Usambara Mountains, Tanzania, Rebecca Halter
Independent Study Project (ISP) Collection
Tropical forests, especially in developing countries, continue to face serious threats of deforestation due to human pressures and poor management. These forests are at risk of disappearing and taking their water catchment and ecosystem services with them. Kizanda Villagers’ illegal woodfuel and polewood extraction poses a threat to the future health and existence of the Baga II Forest. This study, conducted from April 5th to April 19th, 2016, aimed to examine the use versus availability of tree species along the forest border. Twenty disturbance transects, each 4 meters wide, were conducted perpendicular to the Baga II forest border. The transects …