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  1. www.nationalgeographic.org › encyclopedia › coralCoral

    19 de oct. de 2023 · Further research and protection of coral reefs is important, in large part because the world has lost nearly 20 percent of its coral reefs, with many more reefs under threat today. Pollution and increasing ocean temperatures are two major causes of coral reef loss—a problem that can have long-reaching effects on humans and marine species alike.

  2. 3 de may. de 2023 · Functional roles of coral reef primary producers examined with stable isotopes. Context Primary production on coral reefs varies under changing conditions such as light and nutrient availability. This variation causes changes in basal stable isotopes as photosynthetic and nutrient pathways change. Aims This study provides a preliminary baseline ...

  3. 18 de nov. de 2011 · Benthic primary producers in marine ecosystems may significantly alter biogeochemical cycling and microbial processes in their surrounding environment. To examine these interactions, we studied dissolved organic matter release by dominant benthic taxa and subsequent microbial remineralization in the lagoonal reefs of Moorea, French Polynesia. Rates of photosynthesis, respiration, and dissolved ...

  4. 23 de dic. de 2015 · Photosynthetic production is a key ecosystem service provided by tropical coral reefs, but knowledge about the contribution of corals and other reef-associated organisms and the controlling environmental factors is scarce. Locations with occurrence of upwelling events can serve as in-situ laboratories to investigate the impact of environmental variability on production rates of reef-associated ...

  5. 21 de dic. de 2023 · Global temperatures and CO2 over the last 66 million years (after CenCOP, 2023, op. cit.). Blue vertical line marks preindustrial CO2, red marks current levels. The red horizontal line marks the upper limit for present day coral reefs, the blue star at lower left is preindustrial conditions, and the red star at upper right is where unabated fossil fuel use aims for.

  6. 9 de abr. de 2014 · The Role of Primary Producers in Coral Reefs. Photosynthesis and Nutrient Cycling. At the base of the Coral Reef Food Web are the primary producers, mainly the microscopic algae known as zooxanthellae. These tiny organisms, residing within the coral’s tissues, perform photosynthesis, converting sunlight into energy.

  7. 1 de ene. de 2010 · Coral reef ecosystems sustain their high productivity in an oligotrophic environment by the efficient recycling of nutrients and tight benthic-pelagic coupling.