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Articles 61 - 71 of 71
Full-Text Articles in Terrestrial and Aquatic Ecology
Effects Of Coral Stressing On The Feeding Preferences Of The Coral Predator, Acanthaster Planci, Harriet Booth
Effects Of Coral Stressing On The Feeding Preferences Of The Coral Predator, Acanthaster Planci, Harriet Booth
Independent Study Project (ISP) Collection
Coral predators have always been a natural occurrence on coral reefs, but recent studies have begun to focus on the feeding preferences of these predators in relation to bleached and damaged corals. The recent mass bleaching events, mainly resulting from factors of climate change, have motivated researchers to study the effects of predation on the affected corals to determine the extent of harm these large-scale disturbances may be causing to reefs. This study examined how coral stressing affects the feeding preferences of Acanthaster planci, a coral-feeding starfish that has been known to cause widespread damage to coral reefs, especially during …
What Is The Value Of A Sea Turtle?: A Case Study Of The Conservation Ethics Of Sea Turtle Fishermen In The Caribbean Coast Of Nicaragua, Alicia Conte
Independent Study Project (ISP) Collection
The sea turtle populations on the Caribbean Coast of Nicaragua have dramatically decreased as a result of human use and consumption. All species of sea turtles are endangered and at risk of extinction. This is an environmental issue because if sea turtles go extinct, many other plants and animals in marine ecosystems will be negatively impacted by this loss, and the environment will be drastically altered. This is also problematic for locals who depend on this resource for food and as a source of income. Conservation efforts have been initiated by an international NGO, the Wildlife Conservation Society (WCS); however, …
Examining Trends In Taste Preferences, Market Demand, And Annual Catch In An Indigenous Marine Turtle Fishery In Southwest Madagascar, Kristin Jones
Examining Trends In Taste Preferences, Market Demand, And Annual Catch In An Indigenous Marine Turtle Fishery In Southwest Madagascar, Kristin Jones
Independent Study Project (ISP) Collection
The worldwide exploitation of marine turtles has been common throughout human history, turtle products including carapaces for decoration and use, skin for leather, and eggs and meat for consumption. The hunting of marine turtles has long established economic importance among Madagascar's coastal inhabitants and is an activity traditionally associated with integral cultural and spiritual values. Due to overexploitation and a combination of relatively newer threats such as pollution, habitat loss, and incidental fisheries take, however, all marine turtle species in the Indian Ocean are considered to be endangered or critically endangered. Although Madagascar's marine turtles have been legally protected from …
A Study Of Corallivores Of Bawe And Chumbe Islands, Zanzibar, Rachael Mallon
A Study Of Corallivores Of Bawe And Chumbe Islands, Zanzibar, Rachael Mallon
Independent Study Project (ISP) Collection
Coral reefs are considered keystone ecosystems due to their socioeconomic, ecological, and educational value. In Zanzibar, Tanzania, reefs provide income and a protein source for large portions of the population. Fish are reliant upon reefs as grounds for feeding, breeding, and nursing. Reefs are related to mangrove and seagrass ecosystems; the three ecosystems are interconnected in their functions of protecting biodiversity of coastal organisms, coastal erosion, and improving water quality. Coral reefs are also subject to degradation by both anthropogenic and natural causes. Predation is one example of natural degradation of coral. Six species of corallivores were studied to compare …
Traditional Plant Use Of The Raglay In Cãu Gãy Village, Núi Chúa National Park, Alex Greene
Traditional Plant Use Of The Raglay In Cãu Gãy Village, Núi Chúa National Park, Alex Greene
Independent Study Project (ISP) Collection
Members of the Raglay community of Cãu Gãy Village were interviewed to determine the extent and nature of their traditional reliance on plants. This community, located in the buffer zone of Núi Chúa National Park, was found to utilize 64 plant species for a wide variety of uses. Botanical specimens and photographs were used to identify 42 plants to species level, 13 to genus level, and 6 to family level, while 3 remained unidentified. For each plant, the Raglay name, local Vietnamese name, use, specific application, and preparation were documented, as well as any details of ritual or commercial significance. …
Un Estudio Ecológico De Las Lagartijas Del Valle Seco De Buenavista Y De Los Valles Húmedos De La Josefina Y Salango, Ross Brennan
Un Estudio Ecológico De Las Lagartijas Del Valle Seco De Buenavista Y De Los Valles Húmedos De La Josefina Y Salango, Ross Brennan
Independent Study Project (ISP) Collection
La región costera del sur de la provincia de Manabí, Ecuador es un lugar de gran biodiversidad y endemismo. En esta zona el desierto peruano del Tumbes y el bosque húmedo del Chocó se encuentran. La gran cantidad de especies endémicas y la alta biodiversidad resultan de la interacción entre las dos regiones y la diversidad de hábitats que crean. Hay bosques secos tropicales y bosques húmedos muy cerca de Puerto López. Sin embargo, esta región está cambiando rápidamente debido a las actividades humanas; hay progresiva desertificación y otras amenazas a la diversidad. Además, no hay muchos estudios de la …
Miti Iko Wapi Ii ?, Taylor Tully
Miti Iko Wapi Ii ?, Taylor Tully
Independent Study Project (ISP) Collection
Vegetative communities within the savannah ecosystem oscillate between grassland and woodland states. Research has found that ecological perturbations resulting from elephants, fire, other herbivores and humans have a significant influence on the oscillation of vegetative communities. Understanding these forces and how they interplay to influence vegetative dynamics states is essential to a developing any effective conservation management program. A previous study, in 2003, was conducted to establish baseline data on vegetative community structure, elephant damage and fire damage within Ndarakwai Ranch. (Hamilton and Downing 2003). However, the study drew few definitive conclusions and suggested further research. This study was a …
Prey Selectivity Of Planktivorous Fish: Analysis Of Stomach Contents In Four Pomacentrids At Lizard Island, Great Barrier Reef, James O'Hare
Prey Selectivity Of Planktivorous Fish: Analysis Of Stomach Contents In Four Pomacentrids At Lizard Island, Great Barrier Reef, James O'Hare
Independent Study Project (ISP) Collection
Coral reef planktivores are important to coral reefs by concentrating and delivering nutrients and allochthonous carbon from the plankton to reef building corals. In an otherwise very oligotrophic system this function may be of major importance. Planktivorous Damselfish (Pomicentridae) were analysed for prey selectivity through enumeration of stomach contents. Simultaneous plankton tows were conducted to establish the plankton community composition of the waters they were taken from. There was a statistically significant variation between the stomach composition and that of the water column. While there was not a significant difference among Simpson’s diversity indices of the stomach contents, there was …
Aquatic And Terrestrial Habitat Use Of The Australian Freshwater Turtle, Chelodina Expansa, Ellyn Ercolano
Aquatic And Terrestrial Habitat Use Of The Australian Freshwater Turtle, Chelodina Expansa, Ellyn Ercolano
Independent Study Project (ISP) Collection
Organisms select habitats that provide the best possible resources necessary to their survival. Organisms may occupy and utilize a home range which requires specific selection of components in their available habitat. Monitoring the threats to a species within their habitats is a crucial tool in conservation and management practices. The Murray-Darling Basin of south-eastern Australia has suffered alterations to its hydrology, flow regime, catchment size and usage, flooding cycles, as well as from vast removal of vegetation in the floodplains since European settlement in Australia in the mid-nineteenth century. Knowledge of the habitat use of a focal species can guide …
The Effects Of The 2006 Spraying Of Deltamethrin For Tsetse Control On Aquatic Macro-Invertebrates In The Kwando/Linyanti River System, Botswana, Emily Lyczkowski
The Effects Of The 2006 Spraying Of Deltamethrin For Tsetse Control On Aquatic Macro-Invertebrates In The Kwando/Linyanti River System, Botswana, Emily Lyczkowski
Independent Study Project (ISP) Collection
The presence of the tsetse fly has historically been an obstacle to the utilization of the resources of the Okavango Delta and the rest of Northern Botswana. In the late 1990’s, an outbreak of trypanosomiasis in cattle, the disease carried by tsetse, prompted the government of Botswana to implement an aerial spraying operation to eradicate the flies. The broad spectrum pesticide deltamethrin was applied over three months in a Northern block of the delta in 2001 and a southern block in 2002. Post-spray monitoring, carried out by the Henry Oppenheimer Okavango Research Center (HOORC), showed that although the pesticide did …
The Effects Of The Makgadikgadi Wildlife Fence On Cattle Populations And Local Cattle Industry, Jenny Hazelhurst, Elliot Vander Kolk
The Effects Of The Makgadikgadi Wildlife Fence On Cattle Populations And Local Cattle Industry, Jenny Hazelhurst, Elliot Vander Kolk
Independent Study Project (ISP) Collection
This study was conducted to determine the effects of the erection of the Makgadikgadi wildlife fence along the western border of the Makgadikgadi Pans National Park on cattle populations and livestock owners to the west of the fence. Cattle foraging behavior and movement patterns were recorded using GPS and focal observation methods to determine resource use and pressures affecting the populations. Interviews were also conducted in the area of Meno-a-Kwena camp to examine the effects of the fence on the economics of the local cattle industry. Signs of resource stress were found in the continued selection of poor quality forage, …