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Title: Microbial composition of biofilms associated with lithifying rubble of Acropora palmata branches

Abstract

Coral reefs are among the most productive ecosystems on the planet, but are rapidly declining due to global-warming-mediated changes in the oceans. Particularly for the Caribbean region, Acropora sp. stony corals have lost ~80% of their original coverage, resulting in vast extensions of dead coral rubble. We analyzed the microbial composition of biofilms that colonize and lithify dead Acropora palmata rubble in the Mexican Caribbean and identified the microbial assemblages that can persist under scenarios of global change, including high temperature and low pH. Lithifying biofilms have a mineral composition that includes aragonite and magnesium calcite (16 mole% MgCO3) and calcite, while the mineral phase corresponding to coral skeleton is basically aragonite. Microbial composition of the lithifying biofilms are different in comparison to surrounding biotopes, including a microbial mat, water column, sediments and live A. palmata microbiome. Significant shifts in biofilm composition were detected in samples incubated in mesocosms. The combined effect of low pH and increased temperature demonstrated a strong effect after two-week incubations for biofilm composition. Results indicate that lithifying biofilms could remain as a secondary structure on reef rubble possibly impacting the functional role of coral reefs.

Authors:
 [1];  [1];  [2];  [3];  [3];  [1]
  1. National Autonomous Univ. of Mexico (UNAM), Mexico City (Mexico). Inst. of Ecology, Bacterial Ecology Lab.
  2. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Earth & Environmental Sciences, Ecology Dept.
  3. National Autonomous Univ. of Mexico (UNAM), Cancún, Quintana Roo (Mexico). Inst. of Marine Sciences and Limnology, Academic Unit of Reef Systems (UASA)
Publication Date:
Research Org.:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1580074
Grant/Contract Number:  
AC02-05CH11231
Resource Type:
Accepted Manuscript
Journal Name:
FEMS Microbiology Ecology (Online)
Additional Journal Information:
Journal Name: FEMS Microbiology Ecology (Online); Journal Volume: 92; Journal Issue: 1; Journal ID: ISSN 1574-6941
Publisher:
Federation of European Microbiological Societies
Country of Publication:
United States
Language:
English
Subject:
59 BASIC BIOLOGICAL SCIENCES; Acropora palmata; microbial carbonates; lithifying biofilms; global warming; pH; genetic diversity

Citation Formats

Beltrán, Yislem, Cerqueda-García, Daniel, Taş, Neslihan, Thomé, Patricia E., Iglesias-Prieto, Roberto, and Falcón, Luisa I. Microbial composition of biofilms associated with lithifying rubble of Acropora palmata branches. United States: N. p., 2015. Web. doi:10.1093/femsec/fiv162.
Beltrán, Yislem, Cerqueda-García, Daniel, Taş, Neslihan, Thomé, Patricia E., Iglesias-Prieto, Roberto, & Falcón, Luisa I. Microbial composition of biofilms associated with lithifying rubble of Acropora palmata branches. United States. https://doi.org/10.1093/femsec/fiv162
Beltrán, Yislem, Cerqueda-García, Daniel, Taş, Neslihan, Thomé, Patricia E., Iglesias-Prieto, Roberto, and Falcón, Luisa I. Thu . "Microbial composition of biofilms associated with lithifying rubble of Acropora palmata branches". United States. https://doi.org/10.1093/femsec/fiv162. https://www.osti.gov/servlets/purl/1580074.
@article{osti_1580074,
title = {Microbial composition of biofilms associated with lithifying rubble of Acropora palmata branches},
author = {Beltrán, Yislem and Cerqueda-García, Daniel and Taş, Neslihan and Thomé, Patricia E. and Iglesias-Prieto, Roberto and Falcón, Luisa I.},
abstractNote = {Coral reefs are among the most productive ecosystems on the planet, but are rapidly declining due to global-warming-mediated changes in the oceans. Particularly for the Caribbean region, Acropora sp. stony corals have lost ~80% of their original coverage, resulting in vast extensions of dead coral rubble. We analyzed the microbial composition of biofilms that colonize and lithify dead Acropora palmata rubble in the Mexican Caribbean and identified the microbial assemblages that can persist under scenarios of global change, including high temperature and low pH. Lithifying biofilms have a mineral composition that includes aragonite and magnesium calcite (16 mole% MgCO3) and calcite, while the mineral phase corresponding to coral skeleton is basically aragonite. Microbial composition of the lithifying biofilms are different in comparison to surrounding biotopes, including a microbial mat, water column, sediments and live A. palmata microbiome. Significant shifts in biofilm composition were detected in samples incubated in mesocosms. The combined effect of low pH and increased temperature demonstrated a strong effect after two-week incubations for biofilm composition. Results indicate that lithifying biofilms could remain as a secondary structure on reef rubble possibly impacting the functional role of coral reefs.},
doi = {10.1093/femsec/fiv162},
journal = {FEMS Microbiology Ecology (Online)},
number = 1,
volume = 92,
place = {United States},
year = {Thu Dec 24 00:00:00 EST 2015},
month = {Thu Dec 24 00:00:00 EST 2015}
}

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Works referencing / citing this record:

Metagenome of Acropora palmata coral rubble: Potential metabolic pathways and diversity in the reef ecosystem
journal, August 2019