Energetic differences between bacterioplankton trophic groups and coral reef resistance

McDole Somera, Tracey; Bailey, Barbara; Barott, Katie; Grasis, Juris; Hatay, Mark; Hilton, Brett J.; Hisakawa, Nao; Nosrat, Bahador; Nulton, James; Silveira, Cynthia B.; Sullivan, Chris; Brainard, Russell E.; Rohwer, Forest

doi:10.1098/rspb.2016.0467

i

Energetic differences between bacterioplankton trophic groups and coral reef resistance

2016
By McDole Somera, Tracey ; Bailey, Barbara ; Barott, Katie ; ...

Details

Journal Title:

Proceedings of the Royal Society B: Biological Sciences
Personal Author:

McDole Somera, Tracey ; Bailey, Barbara ; Barott, Katie ; Grasis, Juris ; Hatay, Mark ; Hilton, Brett J. ; Hisakawa, Nao ; Nosrat, Bahador ; Nulton, James ; Silveira, Cynthia B. ; Sullivan, Chris ; Brainard, Russell E. ; Rohwer, Forest
NOAA Program & Office:

NMFS (National Marine Fisheries Service) ; PIFSC (Pacific Islands Fisheries Science Center) ; CoRIS (Coral Reef Information System)
Description:

Coral reefs are among the most productive and diverse marine ecosystems on the Earth. They are also particularly sensitive to changing energetic requirements by different trophic levels. Microbialization specifically refers to the increase in the energetic metabolic demands of microbes relative to macrobes and is significantly correlated with increasing human influence on coral reefs. In this study, metabolic theory of ecology is used to quantify the relative contributions of two broad bacterioplankton groups, autotrophs and heterotrophs, to energy flux on 27 Pacific coral reef ecosystems experiencing human impact to varying degrees. The effective activation energy required for photosynthesis is lower than the average energy of activation for the biochemical reactions of the Krebs cycle, and changes in the proportional abundance of these two groups can greatly affect rates of energy and materials cycling. We show that reef-water communities with a higher proportional abundance of microbial autotrophs expend more metabolic energy per gram of microbial biomass. Increased energy and materials flux through fast energy channels (i.e. water-column associated microbial autotrophs) may dampen the detrimental effects of increased heterotrophic loads (e.g. coral disease) on coral reef systems experiencing anthropogenic disturbance.
Keywords:

General Agricultural And Biological Sciences General Biochemistry, Genetics And Molecular Biology General Environmental Science General Immunology And Microbiology General Medicine General Agricultural And Biological Sciences General Biochemistry, Genetics And Molecular Biology General Immunology And Microbiology General Agricultural And Biological Sciences General Biochemistry, Genetics And Molecular Biology General Immunology And Microbiology
Source:

Proceedings of the Royal Society B: Biological Sciences, 283(1829), 20160467
DOI:

https://doi.org/10.1098/rspb.2016.0467
ISSN:

0962-8452 ; 1471-2954
Format:

PDF
Publisher:

The Royal Society
Document Type:

Journal Article
Rights Information:

Other
Compliance:

Library
Main Document Checksum:

urn:sha256:2022443a45ae700bca1cc223730edfe68dc6974f57d554b57fc648779b237c5f
Download URL:

https://repository.library.noaa.gov/view/noaa/54044/noaa_54044_DS1.pdf
File Type:

[PDF - 600.13 KB ]

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