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Infectious diseases can cause rapid population declines or species extinctions. Many pathogens of terrestrial and marine taxa are sensitive to temperature, rainfall, and humidity, creating synergisms that could affect biodiversity. Climate warming can increase pathogen development and survival rates, disease transmission, and host susceptibility. Although(More)
Disease outbreaks alter the structure and function of marine ecosystems, directly affecting vertebrates (mammals, turtles, fish), invertebrates (corals, crustaceans, echinoderms), and plants (seagrasses). Previous studies suggest a recent increase in marine disease. However, lack of baseline data in most communities prevents a direct test of this(More)
nfectious diseases have recently caused substantial community and ecosystem-wide impacts in marine communities. A long-spined sea urchin disease virtually eradicated urchins from the Caribbean and facilitated a coral to algal shift on many reefs (Hughes et al. 1994). Coral diseases , such as white band (Figure 1), white plague, white pox, and aspergillosis(More)
This paper describes a progressive scaffolding approach for the design of web-based learning systems, as well as the development and evaluation of a prototype system that covered web development. Three levels of scaffolding were used: text, graphics, and video. A usability analysis of students' performance with the system found: a) Students primarily relied(More)
  • J Ward
  • 2006
It is well established that hepatic resection improves the long-term prognosis of many patients with liver metastases. However, incomplete resection does not prolong survival, so knowledge of the exact extent of intra-hepatic disease is crucially important in determining patient management and outcome. MR imaging is well recognised as one of the most(More)