title: Comparability of slack water and Lagrangian flow respirometry methods for community metabolic measurements.
abstract: Coral reef calcification is predicted to decline as a result of ocean acidification and other anthropogenic stressors. The majority of studies predicting declines based on in situ relationships between environmental parameters and net community calcification rate have been location-specific, preventing accurate predictions for coral reefs globally. In this study, net community calcification and production were measured on a coral reef flat at One Tree Island, Great Barrier Reef, using Lagrangian flow respirometry and slack water methods. Net community calcification, daytime net photosynthesis and nighttime respiration were higher under the flow respirometry method, likely due to increased water flow relative to the slack water method. The two methods also varied in the degrees to which they were influenced by potential measurement uncertainties. The difference in the results from these two commonly used methods implies that some of the location-specific differences in coral reef community metabolism may be due to differences in measurement methods.
authors.affiliation: School of Geography, Planning and Environmental Management, The University of Queensland, Brisbane, QLD, Australia.
authors.forename: Emily C
authors.initials: EC
authors.lastname: Shaw
authors.affiliation: School of Geography, Planning and Environmental Management, The University of Queensland, Brisbane, QLD, Australia.
authors.forename: Stuart R
authors.initials: SR
authors.lastname: Phinn
authors.affiliation: Oceans and Atmosphere Flagship, Commonwealth Scientific and Industrial Research Organisation (CSIRO), Hobart, TAS, Australia.
authors.forename: Bronte
authors.initials: B
authors.lastname: Tilbrook
authors.affiliation: Oceans and Atmosphere Flagship, Commonwealth Scientific and Industrial Research Organisation (CSIRO), Brisbane, QLD, Australia.
authors.forename: Andy
authors.initials: A
authors.lastname: Steven
mesh_terms: D000818:Animals; D037421:Anthozoa / Q000502:physiology*; D002113:Calcification, Physiologic; D002245:Carbon Dioxide / Q000032:analysis* / Q000737:chemistry / Q000378:metabolism; D057894:Coral Reefs; D057446:Hydrodynamics; D006863:Hydrogen-Ion Concentration; D010788:Photosynthesis / Q000502:physiology; D012623:Seawater / Q000737:chemistry*
chemical_list: D002245:Carbon Dioxide