DH97
DH31_5
SAMN37231269
External Id
Bermuda Institute of Ocean Sciences
INSDC center name
2023-12-01T00:53:57.327Z
INSDC first public
2023-12-01T00:53:57.327Z
INSDC last update
live
INSDC status
MIGS/MIMS/MIMARKS.water
NCBI submission model
MIMARKS.survey
NCBI submission model
MIMARKS.survey.water.6.0
NCBI submission package
ERS17856475
SRA accession
2018-05-16
collection_date
1
depth
Devils Hole, Bermuda is a shallow inland system that experiences seasonal anoxia. Devils Hole represents a natural laboratory where microbial-driven processes and community succession can be studied in the illuminated water column. The stratification and the development of anoxia along with subsequent overturn and the reoxygenation of the water column has been studied as part of a monthly time-series. As temperature driven stratification occurs, oxygen levels decrease to suboxic levels and DOM accumulates. Simulated overturn experiments were used to recreate mixing; there by assessing the bioavailability of the accumulated dissolved organic carbon to the surface microbial community. The surface prokaryotic community responded to the deep, formerly suboxic, filtrate within six days. The DOM quality changed to less diagenetically altered material and coincided with a community shift to prokaryotes that can both produce fresh dissolved organic carbon via chemoautotrophy and degrade the more recalcitrant DOM. For example, nitrification occurred with an increase in Nitrosopumilales, chemoautotrophic ammonia oxidizing archaea that converted ammonia to nitrite based on the ammonia monooxygenase gene copy number and nutrient data. This study shows that suboxic DOM is bioavailable to surface prokaryotes that in turn drive key processes that influence the carbon and nitrogen cycles.
description
oxygen minimum zone microbiome
env_broad_scale
marine sound
env_local_scale
seawater
env_medium
Bermuda: Harrington Sound
geo_loc_name
seawater
isolation_source
32.32421 N 64.71849 W
lat_lon
sterile water
neg_cont_type
seawater metagenome
http://purl.obolibrary.org/obo/NCBITaxon_1561972
organism
mock library
pos_cont_type
MIMARKS Survey related sample from Prokaryotes
title