Preliminary studies of cyanobacteria, picoplankton, and virioplankton in the Salton Sea with special attention to phylogenetic diversity among eight strains of filamentous cyanobacteria

Wood, A. Michelle; Miller, Scott R.; Li, W. K. W.; Castenholz, Richard W.

doi:10.1007/978-94-017-3459-2_6

Cited by 16 publications

(23 citation statements)

References 35 publications

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“…Previous studies of Salton Sea Cyanobacteria also recovered Synechococcus spp. 16S rRNA gene sequences similar to marine isolates, and they comprised a significant fraction of picophytoplankton biomass (Wood et al 2002, Carmichael & Li 2006. Filamentous types (e.g.…”

Section: Potential Roles Of Cyanobacteria In Sulfide Irruption Eventsmentioning

confidence: 97%

Periodic sulfide irruptions impact microbial community structure and diversity in the water column of a hypersaline lake

Swan¹,

Reifel²,

Valentine

2010

Aquat. Microb. Ecol.

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The occurrence of hypoxia/anoxia and sulfide formation in productive lakes, enclosed seas, and the coastal ocean often results in catastrophic loss of plankton, benthic invertebrates, and fish populations. Sulfide formed in deeper waters is mixed upward due to storm events or currents, thereby removing oxygen from large portions of the water column. Although the deleterious effects of these events on many organisms are known, the effects on microbial communities have received less attention. Archaeal and bacterial community structure and diversity were investigated at 6 stations along 2 intersecting transects passing through a sulfide-rich plume formed in the moderately hypersaline Salton Sea, California, USA. Community structure analysis clearly distinguished samples within and outside the sulfide plume, and multivariate analyses found these patterns to be correlated with sulfide concentration. Cloning and sequencing of 16S rRNA genes revealed that Actinobacteria, Gammaproteobacteria (purple sulfur bacteria), and Chlorobi (green sulfur bacteria) were more prevalent at stations with higher sulfide concentration, and Synechococcus spp. was the most abundant bacterial lineage at most stations. Archaeal diversity was low, and sequences were affiliated with Methanohalophilus spp., Methanococcoides spp., Methanosarcinales spp., many of which are related to known methylotrophs, and Marine Benthic Group (MBG)-D sequences. Compositional differences detected between stations may reflect differential tolerances or utilization of sulfide and other reduced-sulfur compounds by the planktonic microbial community.KEY WORDS: Microbial diversity · Sulfide oxidation · Methylotrophy · Dimethylsulfide · Dimethylsulfoniopropionate · Gypsum precipitation · Water column anoxia · Hypersaline lake Resale or republication not permitted without written consent of the publisherAquat Microb Ecol 60: [97][98][99][100][101][102][103][104][105][106][107][108] 2010 or polysulfides allow for visualization of these events from the surface (Takeda et al. 1991, Fallesen et al. 2000 and from satellite observation (Weeks et al. 2004, Tiffany et al. 2007c, Lavik et al. 2009). While affected coastal ocean regions may be larger in extent, enclosed environments such as bays, fjords, and lakes are easier to sample and monitor, and make excellent candidates for studying the effects of water quality deterioration on food webs.The Salton Sea is a large (980 km 2 ), shallow (8 m average depth), eutrophic, moderately hypersaline (48 to 50 g l -1) lake located in the southern California desert, USA (see Fig. 1). During a reconnaissance study from 1997 to 1999, the seasonal formation of anoxia and sulfide in bottom waters after thermal stratification developed was documented (Watts et al. 2001). Periodic wind storms mix oxygen-depleted, sulfide-rich bottom waters to the surface, causing mass mortality of plankton (Tiffany et al. , 2007a, benthic invertebrates (Detwiler et al. 2002), and fish (Riedel et al. 2002), as well as the precipitation of gyps...

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Section: Potential Roles Of Cyanobacteria In Sulfide Irruption Eventsmentioning

confidence: 97%

Periodic sulfide irruptions impact microbial community structure and diversity in the water column of a hypersaline lake

Swan¹,

Reifel²,

Valentine

2010

Aquat. Microb. Ecol.

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“…Due to its frequent algal blooms and their subsequent die-off and rapid decomposition during overturn events, the microbial loop should be a substantial part of the food web of the Salton Sea, linking bacterial and ciliate production directly to the fish. Wood et al (2002) found that densities of heterotrophic bacteria in the Salton Sea, prey for many filter-feeding bactivorous ciliates, were more than an order of magnitude higher than in typical neritic marine waters. Highly eutrophic environments are typically species rich in bactivorous ciliates (Small 1973).…”

Section: Introductionmentioning

confidence: 95%

“…, Fenchel 1969;Smetacek 1981;Azovsky and Mazei 2005). Also the eutrophic nature of the lake leads to high bacterial abundance (food for filter-feeding ciliates) (Wood et al 2002) and benthic diatoms for forms such as Frontonia sp. (Lange and Tiffany 2002).…”

Section: Protozoa and Eutrophymentioning

confidence: 99%

“…Dyer (1989) also reported Sonderia tubigula feeds on filamentous bacteria and speculated that its large buccal cavity allows it to ingest and package the long strands. At least two morphotypes of Beggiatoa are known to be common members of shoreline algal mats of the Salton Sea (Wood et al 2002). However, it seems that during the brief excursions of Sonderia sp.…”

Section: Anaerobic Ciliatesmentioning

confidence: 99%

“…feed on large algae such as dinoflagellates and diatoms (Fenchel 1987), which are abundant in the Salton Sea (Lange and Tiffany 2002;Tiffany et al 2007a). Benthic algal mats, which occasionally break loose from the bottom, are commonplace in shallow areas at the Salton Sea; these teem with ciliates, benthic diatoms, filamentous cyanobacteria, and Beggiatoa spp., filamentous sulfur-oxidizing bacteria (Carpelan 1961;Wood et al 2002).…”

Section: Introductionmentioning

confidence: 99%

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Ciliate plankton dynamics and survey of ciliate diversity in the Salton Sea, California, 1997–1999

Tiffany

Swan

Gebler

et al. 2007

Lake and Reservoir Management

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Seasonal changes in bacterial diversity in the Salton Sea

2009

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The Salton Sea is a large, shallow, endorheic, polymictic, saline lake in Southern California sustained by runoff from local agricultural and municipal wastewater. As a closed-basin lake in an arid region with declining water supply, it is becoming increasingly saline. Due to its eutrophic status and episodic wind-driven mixing, basin-wide anoxia events are becoming more common during summer. Sequencing of 16S rRNA gene clones obtained from the water column and sediments provided the first molecular assessment of bacterial community structure in the Salton Sea. Similar to other saline habitats, the water column community was dominated by Gamma-and Alphaproteobacteria, and Bacteroidetes, although there was significant seasonal variability in diversity, richness, and the specific genera recovered. Sediments showed high diversity and richness and were dominated by sequences from cultured and uncultured phyla typical of marine sediments, especially the Deltaproteobacteria. This study has provided baseline data about the bacterial communities found in this important California water body and may serve as important indicators of change as the lake becomes increasingly saline over time or as remediation efforts are enacted.

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Preliminary studies of cyanobacteria, picoplankton, and virioplankton in the Salton Sea with special attention to phylogenetic diversity among eight strains of filamentous cyanobacteria

Cited by 16 publications

References 35 publications

Periodic sulfide irruptions impact microbial community structure and diversity in the water column of a hypersaline lake

Periodic sulfide irruptions impact microbial community structure and diversity in the water column of a hypersaline lake

Ciliate plankton dynamics and survey of ciliate diversity in the Salton Sea, California, 1997–1999

Seasonal changes in bacterial diversity in the Salton Sea

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