Coral Reefs in the Anthropocene by Charles Birkeland

By Charles Birkeland

This quantity investigates the results of human actions on coral reefs, which offer very important life-supporting structures to surrounding average and human groups. It examines the self-reinforcing ecological, monetary and technological mechanisms that degrade coral reef ecosystems round the world.

Topics comprise reefs and limestones in Earth heritage; the interactions among corals and their symbiotic algae; ailments of coral reef organisms; the complicated triangle among reef fishes, seaweeds and corals; coral disturbance and restoration in a altering world.

In addition, the authors take key contemporary advances in DNA reviews into consideration which supplies new insights into the inhabitants biology, styles of species distributions, contemporary evolution and vulnerabilities to environmental stresses. those DNA analyses additionally offer new understandings of the restrictions of coral responses and scales of administration essential to maintain coral reefs of their current states.

Coral reefs were crucial resources of foodstuff, source of revenue and assets to people for millennia. This e-book information the fragile stability that exists inside of those ecosystems in any respect scales, from geologic time to mobile interactions and explores how fresh worldwide and native adjustments impression this dating. it's going to function an vital source for all these drawn to studying how human actions have affected this very important atmosphere round the world.

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Extra info for Coral Reefs in the Anthropocene

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04 % of the Earth’s atmosphere is CO2 and the average surface temperature of approximately 14  C (Axelrod 1992) readily supports life. 5 The Atmosphere and the Evolution of Life During the first 1,000 Myr of Earth’s history, most precipitation of CaCO3 likely occurred spontaneously (abiotically) when concentrations of Ca2+ and HCO3À supersaturated warm waters. The evolution of life on Earth profoundly altered this relationship (Fig. 1). Microbes evolved the ability to utilize energy from chemical bonds or sunlight to produce organic matter (abbreviated below as CH2O) from CO2 (Canfield and Raiswell 1999; Riding 2000), using either hydrogen sulfide (H2S) or water (H2O) as the hydrogen donor: H2 S þ CO2 <¼¼> CH2 O þ S2 ð2:5Þ H2 O þ CO2 <¼¼> CH2 O þ O2 ð2:6Þ If diffusion and mixing processes in seawater are limited relative to the rate of photosynthesis, removal of CO2 from solution by photosynthesis can promote CaCO3 precipitation (see Eq.

1 The geological time scale illustrating major reefrelated events. The arrows along the right side of the figure note scale changes, with the scale greatly expanded over the past 100 million years, especially the past 25 million years 23 HOLOCENE PLEISTOCENE Changing Influences Between Life and Limestones in Earth History C E N O Z O I NEOGENE C 2 First corals with algal symbionts First scleratinian corals SPONGE-ALGAL BIOHERMS MASS EXTINCTION 250 SPONGE-ALGAL BIOHERMS FUSULINIDS ABUNDANT ALGAL BIOHERMS 300 STROMATOLITES & MUDMOUNDS 350 MASS EXTINCTION STROMOTOPOROIDRED ALGALTABULATE CORAL BIOHERMS 400 SECOND ORDER EXTINCTION STROMATOPOROID - RED ALGALTABULATE CORAL BIOHERMS 450 DEVELOPING CALCAREOUS FAUNAS 500 CAMBRIAN STROMATOLITES MASS EXTINCTION ARCHAEOCYATHID-ALGAL CYANOBACTERIAL -BIOHERMS 550 NEO MESO PALEO PROTEROZOIC FIRST APPEARANCE OF SHELLED FOSSILS EDIACARIAN - DIVERSE METAZOAN FAUNAS CRYOGENIAN - “SNOWBALL EARTH” STROMATOLITES “AGE OF THE MICROBES” 600 EUCARYOTES DIVERSIFY 1000 EARLIEST EUCARYOTES 1500 BANDED IRON FORMATION INDICATES INCR.

Trends Ecol Evol 28:423–431 Tribollet A, Golubic S (2005) Cross-shelf differences in the pattern and pace of bioerosion of experimental carbonate substrates exposed for 3 years on the northern Great Barrier Reef, Australia. Coral Reefs 24:422–434 Tribollet A, Langdon C, Golubic S, Atkinson M (2006) Endolithic microflora are major primary producers in dead carbonate substrates of Hawaiian coral reefs. J Phycol 42:292–303 Wabnitz C, Taylor M, Green E, Razak T (2003) From ocean to aquarium: the global trade in marine ornamental species.

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