Sökning: "Coral reef"
Visar resultat 1 - 5 av 26 avhandlingar innehållade orden Coral reef.
1. Reef Futures : Exploring the dynamics of transformative change in marine social-ecological systems
Sammanfattning : The thesis explores issues relating to transformative change in the context of marine governance in the Coral Triangle, and the effects of such change processes on policy, stakeholder relations and management activities. Paper 1 studies how change-oriented actors (institutional entrepreneurs) operating at the international level can introduce and purposefully navigate large-scalechange processes. LÄS MER
2. Coral Reef Habitats and Fish Connectivity : Implications for coastal management and fishery
Sammanfattning : Coral reefs have one of the highest levels of biodiversity of all ecosystems in the world and are important for both human livelihood and food security throughout many tropical countries. However, due to increased anthropogenic pressure on marine ecosystems, especially during the last couple of decades, coral reefs have become critically over-fished, and many reefs are now in a degraded state and are facing additional future threats due to further over-exploitation, chemical pollution, sedimentation, and effects of climate change. LÄS MER
3. Upholding the coral loop : Resilience, alternative stable states and feedbacks in coral reefs
Sammanfattning : Coral reefs are suffering unprecedented declines in coral cover and species diversity. These changes are often associated with substantial shifts in community structure to new dominant organisms. Ultimately, these “phase shifts” can be persistent and very difficult to return from. LÄS MER
4. Habitat structure, degradation and management effects on coral reef fish communities
Sammanfattning : Coral reefs are among the most diverse and productive ecosystems on earth, and are critical to the survival of tropical marine ecosystems and sustenance of local human populations. However, coral reefs are quite vulnerable to disturbances, both natural and anthropogenic. LÄS MER
5. Benthic cryptofauna and internal bioeroders on coral reefs
Sammanfattning : The cryptofauna of coral reefs may act as a food source for fish, while being grazers or predators themselves, and hence constitute an important group in the coral reef food web. In addition, the actively eroding taxa of the cryptofauna contribute to the decomposition and recirculation of calcium carbonate and are consequently essential for the rebuilding new coral. LÄS MER