Microbial diversity and activity in seafloor brine lake sediments (Alaminos Canyon block 601, Gulf of Mexico)

Geobiology ◽  
2016 ◽  
Vol 14 (5) ◽  
pp. 483-498 ◽  
Author(s):  
M. Crespo-Medina ◽  
M. W. Bowles ◽  
V. A. Samarkin ◽  
K. S. Hunter ◽  
S. B. Joye
Keyword(s):  
Gulf Of Mexico ◽  
Microbial Diversity ◽  
Lake Sediments ◽  
Brine Lake

Microbial diversity in lake sediments detected by PCR-DGGE

2008 ◽  
Vol 3 (3) ◽  
pp. 293-299 ◽  
Author(s):  
Xinqing Zhao ◽  
Liuyan Yang ◽  
Can Chen ◽  
Lin Xiao ◽  
Lijuan Jiang ◽  
...  
Keyword(s):  
Microbial Diversity ◽  
Lake Sediments

Microbial diversity of eolian dust sources from saline lake sediments and biological soil crusts in arid Southern Australia

2012 ◽  
Vol 80 (2) ◽  
pp. 294-304 ◽  
Author(s):  
Raeid M.M. Abed ◽  
Alban Ramette ◽  
Vera Hübner ◽  
Patrick Deckker ◽  
Dirk Beer
Keyword(s):  
Microbial Diversity ◽  
Lake Sediments ◽  
Saline Lake ◽  
Biological Soil Crusts ◽  
Eolian Dust ◽  
Soil Crusts ◽  
Dust Sources

scholarly journals Microbial diversity in intensively farmed lake sediment contaminated by heavy metals and identification of microbial taxa bioindicators of environmental quality

2022 ◽  
Vol 12 (1) ◽  
Author(s):  
María Custodio ◽  
Ciro Espinoza ◽  
Richard Peñaloza ◽  
Tessy Peralta-Ortiz ◽  
Héctor Sánchez-Suárez ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Microbial Diversity ◽  
Microbial Communities ◽  
Lake Sediments ◽  
Environmental Quality ◽  
Heavy Metal Contamination ◽  
Current Knowledge ◽  
Freshwater Ecosystems ◽  
Monitoring And Control

AbstractThe cumulative effects of anthropogenic stress on freshwater ecosystems are becoming increasingly evident and worrisome. In lake sediments contaminated by heavy metals, the composition and structure of microbial communities can change and affect nutrient transformation and biogeochemical cycling of sediments. In this study, bacterial and archaeal communities of lake sediments under fish pressure contaminated with heavy metals were investigated by the Illumina MiSeq platform. Despite the similar content of most of the heavy metals in the lagoon sediments, we found that their microbial communities were different in diversity and composition. This difference would be determined by the resilience or tolerance of the microbial communities to the heavy metal enrichment gradient. Thirty-two different phyla and 66 different microbial classes were identified in sediment from the three lagoons studied. The highest percentages of contribution in the differentiation of microbial communities were presented by the classes Alphaproteobacteria (19.08%), Cyanophyceae (14.96%), Betaproteobacteria (9.01%) y Actinobacteria (7.55%). The bacteria that predominated in sediments with high levels of Cd and As were Deltaproteobacteria, Actinobacteria, Coriobacteriia, Nitrososphaeria and Acidobacteria (Pomacocha), Alphaproteobacteria, Chitinophagia, Nitrospira and Clostridia (Tipicocha) and Betaproteobacteria (Tranca Grande). Finally, the results allow us to expand the current knowledge of microbial diversity in lake sediments contaminated with heavy metals and to identify bioindicators taxa of environmental quality that can be used in the monitoring and control of heavy metal contamination.

scholarly journals Chemical and microbial diversity covary in fresh water to influence ecosystem functioning

2019 ◽  
Vol 116 (49) ◽  
pp. 24689-24695 ◽  
Author(s):  
Andrew J. Tanentzap ◽  
Amelia Fitch ◽  
Chloe Orland ◽  
Erik J. S. Emilson ◽  
Kurt M. Yakimovich ◽  
...  
Keyword(s):  
Organic Matter ◽  
Microbial Diversity ◽  
Lake Sediments ◽  
Ecosystem Functioning ◽  
Aquatic Ecosystems ◽  
Organic Molecules ◽  
Biological Diversity ◽  
Water Color ◽  
Naked Eye ◽  
Global Carbon

Invisible to the naked eye lies a tremendous diversity of organic molecules and organisms that make major contributions to important biogeochemical cycles. However, how the diversity and composition of these two communities are interlinked remains poorly characterized in fresh waters, despite the potential for chemical and microbial diversity to promote one another. Here we exploited gradients in chemodiversity within a common microbial pool to test how chemical and biological diversity covary and characterized the implications for ecosystem functioning. We found that both chemodiversity and genes associated with organic matter decomposition increased as more plant litterfall accumulated in experimental lake sediments, consistent with scenarios of future environmental change. Chemical and microbial diversity were also positively correlated, with dissolved organic matter having stronger effects on microbes than vice versa. Under our experimental scenarios that increased sediment organic matter from 5 to 25% or darkened overlying waters by 2.5 times, the resulting increases in chemodiversity could increase greenhouse gas concentrations in lake sediments by an average of 1.5 to 2.7 times, when all of the other effects of litterfall and water color were considered. Our results open a major new avenue for research in aquatic ecosystems by exposing connections between chemical and microbial diversity and their implications for the global carbon cycle in greater detail than ever before.

scholarly journals Microbial diversity in sediments associated with surface-breaching gas hydrate mounds in the Gulf of Mexico

2003 ◽  
Vol 46 (1) ◽  
pp. 39-52 ◽  
Author(s):  
Heath J. Mills ◽  
Cassie Hodges ◽  
Kristin Wilson ◽  
Ian R. MacDonald ◽  
Patricia A. Sobecky
Keyword(s):  
Gulf Of Mexico ◽  
Microbial Diversity ◽  
Gas Hydrate

scholarly journals Mississippi River Plume Enriches Microbial Diversity in the Northern Gulf of Mexico

2016 ◽  
Vol 7 ◽  
Author(s):  
Olivia U. Mason ◽  
Erin J. Canter ◽  
Lauren E. Gillies ◽  
Taylor K. Paisie ◽  
Brian J. Roberts
Keyword(s):  
Gulf Of Mexico ◽  
Microbial Diversity ◽  
Mississippi River ◽  
River Plume ◽  
Northern Gulf Of Mexico ◽  
Mississippi River Plume

CS2 increasing CH4-derived carbon emissions and active microbial diversity in lake sediments

2022 ◽  
pp. 112678
Author(s):  
Jing Wang ◽  
Yi-Xuan Chu ◽  
Hendrik Schäfer ◽  
Guangming Tian ◽  
Ruo He
Keyword(s):  
Microbial Diversity ◽  
Lake Sediments ◽  
Carbon Emissions

Impact of natural oil and higher hydrocarbons on microbial diversity, distribution, and activity in Gulf of Mexico cold-seep sediments

2010 ◽  
Vol 57 (21-23) ◽  
pp. 2008-2021 ◽  
Author(s):  
Beth N. Orcutt ◽  
Samantha B. Joye ◽  
Sara Kleindienst ◽  
Katrin Knittel ◽  
Alban Ramette ◽  
...  
Keyword(s):  
Gulf Of Mexico ◽  
Microbial Diversity ◽  
Cold Seep ◽  
Natural Oil ◽  
Higher Hydrocarbons
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