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Articles 61 - 65 of 65
Full-Text Articles in Oceanography
To Live With The Sea: Community-Based Management Of Marine Resources In Southwest Madagascar, Hannah Pitt
To Live With The Sea: Community-Based Management Of Marine Resources In Southwest Madagascar, Hannah Pitt
Independent Study Project (ISP) Collection
“God intended us to fish, and we will fish until the end,” the elderly Vezo fisherman explained, shrugging his shoulders as if in resignation to an unavoidable truth (Niry). For a people whose history, culture, and economy have revolved around the sea for generations, the idea of preservation is just not palatable, he seemed to be saying. The momentum of tradition, in other words, cannot be stopped. Yet in 23 Vezo fishing villages in the region of Andavadoaka, along the southwest coast of Madagascar, communities have collectively established seasonal and permanent restrictions on critical fishing grounds that together make up …
Distribution Of Ultraviolet-Absorbing Sunscreen Compounds Across The Body Surface Of Two Species Of Scaridae, Elizabeth Cerny-Chipman
Distribution Of Ultraviolet-Absorbing Sunscreen Compounds Across The Body Surface Of Two Species Of Scaridae, Elizabeth Cerny-Chipman
Independent Study Project (ISP) Collection
Ultraviolet radiation has far-reaching effects in marine ecosystems, but many marine organisms have UV-absorbing compounds that protect them from sun-induced damage. The mucus of coral reef fish has been found to contain mycosporine-like amino acids that absorb UV light from 309-360 nm. Using UV spectrophotometry, we examined whether fish are able to allocate these MAA sunscreen compounds to areas of the body that receive the most UV radiation. We compared absorbance spectra of mucus from the body surface of dorsal, ventral, caudal and head areas in two species of Scaridae (Scarus schlegeli and Chlorurus sordidus) from Coral Bay, Western Australia. …
Investigating A Method To Measure Sperm Transfer In Chelidonura Sandrana (Opisthobranchia: Cephalaspidea), Kate Kunigelis
Investigating A Method To Measure Sperm Transfer In Chelidonura Sandrana (Opisthobranchia: Cephalaspidea), Kate Kunigelis
Independent Study Project (ISP) Collection
This paper investigates possible methods for measuring sperm transfer in the internal fertilizing, simultaneous hermaphrodite Chelidonura sandrana (Opisthobranchia: Cephalaspidea). Comparing sperm amount transferred in copulations has significance for testing the assumption that sperm transfer is linearly correlated with copulation duration as well as providing a tool for future studies. Various methods of preparing, treating, and viewing sperm samples were attempted. Two unsuccessful pilot studies were conducted to test free sperm counts and measuring sperm pellet surface area. Future research should focus on optimizing centrifugation method for surface area measurements of sperm clusters and resuspending sperm clusters to enable sperm counting. …
Sea Urchin Predation In Misali Island Marine Park, Nicole Esclamado
Sea Urchin Predation In Misali Island Marine Park, Nicole Esclamado
Independent Study Project (ISP) Collection
The populations of sea urchins and their main predators, triggerfish (Balistidae), wrasses (Labridae) and emperors (Lethrinidae), were studied in the extractive and non-extractive zones of the Misali Island Marine Conservation Area in order to (1) evaluate the applicability of a sea urchin-sea urchin predator model developed in Kenya’s fringing reefs, (2) gain baseline data on Misali’s coral reef, and (3) evaluate the recovery status of the protected zone. This study revealed the predictive power of the sea urchin-sea urchin predator model for the reef ecosystem of Misali Island. As expected, a decline in sea urchin predators as a gross trophic …
Factors Affecting The Distribution And Health Of The Intertidal Coral Goniastrea Aspera On The Reef Flat In Geoffrey Bay, Magnetic Island, Julia Smith
Independent Study Project (ISP) Collection
The intertidal zone can be a harsh environment, presenting many challenges to the organisms inhabiting it. Given its dynamic nature, it is surprising that it is sometimes able to sustain systems as delicate and sensitive as coral reefs. Many organisms have adapted to life on the intertidal reef flat, and one of the most prominent on the northeastern coast of Australia is the massive coral Goniastrea aspera. The mechanisms driving the distribution of this species are not entirely understood; this study investigated the potential role of microhabitat, as well as that of actual physical characteristics of the colonies, in the …