Influence of Hydrological Pulse on Bacterial Growth and DOC Uptake in a Clear-Water Amazonian Lake
@article{Farjalla2006InfluenceOH, title={Influence of Hydrological Pulse on Bacterial Growth and DOC Uptake in a Clear-Water Amazonian Lake}, author={Vinicius Fortes Farjalla and D{\'e}bora de Almeida Azevedo and Francisco de Assis Esteves and Reinaldo Luiz Bozelli and F{\'a}bio Roland and Alex Enrich-Prast}, journal={Microbial Ecology}, year={2006}, volume={52}, pages={334-344} }
This study was conducted to evaluate: (1) the bacterial growth and the dissolved organic carbon (DOC) uptake in an Amazonian lake (Lake Batata) at high-water and low-water periods of the flood pulse; (2) the influence of nitrogen and phosphorus (NP) additions on bacterial growth and DOC uptake in Lake Batata at two flood pulse periods; and (3) the bioavailability of the main DOC sources in Lake Batata. Lake Batata is a typical clear-water Amazonian lake, located in the watershed of Trombetas…
67 Citations
Effects of mire-originated dissolved organic carbon, nitrogen, and phosphorus on microbial activity in boreal headwaters
- Environmental Science
- 2016
Abstract We studied bacterial production and respiration in acidic, carbon-rich waters originating from natural, drained, and restored mires during dry and rainy summers. In addition, we tested how…
Distinct Bacterial Communities in Wet and Dry Seasons During a Seasonal Water Level Fluctuation in the Largest Freshwater Lake (Poyang Lake) in China
- Environmental ScienceFront. Microbiol.
- 2019
This study used the high-throughput 16S rRNA gene sequencing approach to investigate the taxonomic and functional dynamics of bacterial communities in wet-season and dry-season of Poyang Lake (PYL) in China and found that bacterial communities were distinct taxonomically and functionally in dry- Season and the nutrients especially P variation had a significant contribution to the seasonal variation ofacterial communities.
Primary Production In A Clear Water Lake Of Colombian Amazon (Lake Boa)
- Environmental Science
- 2009
Phytoplankton production is one of the most significant aspects in aquatic ecosystems. In this paper primary production of the phytoplankton community was measured (C method) in a clear water lake in…
Carbon and phosphorus regulating bacterial metabolism in oligotrophic boreal lakes
- Environmental Science
- 2011
The results show that heterotrophic bacterial carbon mineralization in this kind of system during autumn is conditioned by the combined availability of labile carbon and phosphorus, with the assimilated carbon mainly transformed to inorganic carbon in respiration, contributing to CO2 supersaturation in these systems.
After the flood: changing dissolved organic carbon bioavailability and bacterial growth following inflows to estuaries
- Environmental ScienceBiogeochemistry
- 2015
Abstract
Freshwater inflows play an important role in delivering dissolved organic carbon (DOC) to estuaries. Although considerable DOC can be delivered to estuaries during episodic inflow events,…
Photo-degradation effect on dissolved organic carbon availability to bacterioplankton in a lake in the upper Paraná river floodplain
- Environmental Science
- 2013
Dissolved organic carbon (DOC) is nowadays recognized as the main substrate and source of energy for aquatic microbial community. The great part of available organic carbon for bacterioplankton might…
Seasonal variation and interaction of photodegradation and microbial metabolism of DOC in black water Amazonian ecosystems
- Environmental Science, Engineering
- 2013
The combined effect of photodegradation and stimulus of bacterial metabolism could account for a significant part of the CO2 production in Amazonian black water ecosystems.
Hydrological pulse regulating the bacterial heterotrophic metabolism between Amazonian mainstems and floodplain lakes
- Environmental ScienceFront. Microbiol.
- 2015
The work indicated that the bacterial metabolism was mainly driven by respiration in Amazonian aquatic ecosystems resulting in low BGE in either high or LW phase; the hydrological pulse regulated the bacterial heterotrophic metabolism between Amazonian mainstems and floodplain lakes mostly driven by OM quality.
Decomposition of Particulate Organic Carbon from Aquatic Macrophytes Under Different Nutrient Conditions
- Environmental ScienceAquatic Geochemistry
- 2015
This study compared the decomposition of particulate organic carbon (POC) of two macrophyte species under four nutrient conditions and its fate within the aquatic system. Samples of aquatic…
Bacterioplankton features and its relations with doc characteristics and other limnological variables in Paraná river floodplain environments (PR/MS-Brazil)
- Environmental ScienceBrazilian journal of microbiology : [publication of the Brazilian Society for Microbiology]
- 2011
Bacterial density, biomass and biovolume are similar to those from other freshwater environments and both density and biomass were higher in the period with less rain, and a possible competition between bacterioplankton and phytoplankon for inorganic nutrients was showed.
References
SHOWING 1-10 OF 61 REFERENCES
Nutrient limitation of bacterial production in clear water Amazonian ecosystems
- Environmental ScienceHydrobiologia
- 2004
It is concluded that phosphorus is the main limiting nutrient to bacterioplankton production in these clear water Amazonian ecosystems during the high water period and additions of glucose stimulated the bacterial production mainly due to the low quality of the carbon pool present in these ecosystems.
Plankton and primary production in aquatic systems of the Central Amazon basin
- Environmental Science
- 1979
Bacterial carbon metabolism in the Amazon River system
- Environmental Science
- 1995
It appeared that enhanced bacterial growth efficiencies during periods of high water resulted from increased bioavailability of substrates derived from the extensive varzea (floodplain).
A cross-system analysis of labile dissolved organic carbon
- Environmental Science
- 1995
It is suggested that the higher concentrations of DOCL in eutrophic as opposed to oligotrophic systems may be explained by a higher 'theoretical community half-saturation constant' (K,) in eUTrophic systems.
Whole‐lake mineralization of allochthonous and autochthonous organic carbon in a large humic lake (örträsket, N. Sweden)
- Environmental Science
- 2001
Organic carbon mineralization was studied in a large humic lake (Lake Ortrasket) in northern Sweden during a well‐defined summer stratification period following high water flow during snowmelt.…
The relationship between DOC and planktonic bacteria in tropical coastal lagoons
- Environmental Science
- 2002
It is concluded that low phosphorus concentration and low quality of bulk DOC are the main bottom-up factors limiting bacterial growth in these tropical coastal lagoons.
Seasonal and spatial variations in the nutrient limitation of bacterioplankton growth in the northwestern Mediterranean
- Environmental Science
- 2002
Nutrient limitation of bacterioplankton growth was studied in the western Mediter- ranean Sea to determine its spatial and temporal variations. Shipboard microcosm experiments were performed in June…
Accumulation of degradable DOC in surface waters: Is it caused by a malfunctioning microbialloop?
- Environmental Science
- 1997
A model describing the interactions between heterotrophic bacteria, phytoplankton, and bacterivorous protozoa is used to explore how the balance between DOC production and consumption shifts along a gradient from oligotrophy to eutrophy.
Use of elemental composition to predict bioavailability of dissolved organic matter in a Georgia river
- Environmental Science
- 1997
The relationship between the bioavailability of dissolved organic matter (DOM) and its bulk chemical composition was examined on three dates at 10 sites on the Ogeechee River, a blackwater river in…
Bacterial utilization of humic substances from the Arctic Ocean
- Environmental Science
- 1999
The experiments indicated that marine HS play an active role in bacterial carbon cycling in the Arctic Ocean, with surface HS of significantly better bacterial food quality than deep water HS.