Role of the polychaete Neanthes succinea in phosphorus regeneration from sediments in the Salton Sea, California

Swan, Brandon K.; Watts, J. M.; Reifel, Kristen M.; Hurlbert, Stuart H.

doi:10.1007/s10750-006-0298-6

Cited by 30 publications

(21 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In this study we manipulate both metrics (density and size) to investigate impacts of polychaetes on O 2 and nitrogen solute fluxes. Previous laboratory studies of nereid enhancement of solute fluxes reported results similar to ours, with relatively small densities and/or size of individuals in each treatment (Bartoli et al 2000, Christensen et al 2000, Swan et al 2007. One of these studies (Bartoli et al 2000) used A. succinea worms of a size similar to that used in our small worms treatment, and these authors found a remarkably similar linear relationship between animal biomass and denitrification (Fig.…”

Section: Effects Of Polychaete Biomass Versus Sizesupporting

confidence: 84%

“…These experimental abundances compare well with historical summer densities of polychaetes in the Choptank estuary, which range from ~500 to 4000 worms m −2 (Llanso et al 2010) and to the worm densities used in previous published experiments (e.g. Bartoli et al 2000, Swan et al 2007). Cores were then allowed to equilibrate over night in cylindrical tanks filled with estuarine water under continuous aeration and water circulation in a dark, temperature-controlled (25°C) chamber at ambient salinity (11.4).…”

Section: Effects Of Polychaete Abundance and Oxygen (Expt A-o)supporting

confidence: 82%

See 1 more Smart Citation

Short-term effects of nereid polychaete size and density on sediment inorganic nitrogen cycling under varying oxygen conditions

Bosch

Cornwell²,

Kemp³

2015

Mar. Ecol. Prog. Ser.

View full text Add to dashboard Cite

Chronic eutrophication and expanding seasonal hypoxia (O 2 < 63 µM) in estuaries like Chesapeake Bay have altered benthic faunal communities in favor of opportunistic species that can quickly populate organic-rich sediments following hypoxic events. It has been suggested that the biogenic activity of polychaetes can stimulate microbial ammonification, nitrification, and/or denitrification in estuarine sediments as well as increase the fluxes of inorganic nitrogen (NH 4 + , NO 2 − , NO 3 − , N 2 ) across the sediment−water interface. Results of 2 laboratory experiments with the opportunistic polychaete Alitta (Neanthes) succinea were used to quantify the short-term influence of density and size of surface-feeding polychaetes on denitrification and sediment− water fluxes of inorganic nitrogen under varying oxygen conditions. This study shows that polychaete enhancements of O 2 and nitrogen fluxes were strongly correlated with total animal biomass. Fluxes of O 2 , NH 4 + and N 2 were stimulated by presence of animals for both larger and smaller worms, but per capita effects were greater for the deep-burrowing larger polychaetes. With the onset of hypoxic conditions, all density treatments had reductions in O 2 , NH 4 + and N 2 fluxes, with the high-density treatment showing the greatest change. Denitrification efficiency was 33% higher for experiments with large worms than for smaller worm treatments, suggesting that the former were more effective in removing fixed nitrogen.

show abstract

Section: Effects Of Polychaete Biomass Versus Sizesupporting

confidence: 84%

Section: Effects Of Polychaete Abundance and Oxygen (Expt A-o)supporting

confidence: 82%

Short-term effects of nereid polychaete size and density on sediment inorganic nitrogen cycling under varying oxygen conditions

Bosch

Cornwell²,

Kemp³

2015

Mar. Ecol. Prog. Ser.

View full text Add to dashboard Cite

show abstract

“…Some general prediction models of these processes have already been developed; however, in many cases unpredictable local factors are of great importance (Boström et al 1982, Pant and Reddy 2001, Wang et al 2003, KowalczewskaMadura and Gołdyn 2010. The most important factors influencing the release of phosphorus are: temperature (Kelderman 1984, Psenner 1984, Forsberg 1989, pH (Lijklema 1980, Boström et al 1988, Moore and Reddy 1994, the concentration of oxygen in the surface layer of sediments and in the near-water layer , Wiśniewski and Planter 1987, Ishikawa and Nishimura 1989, Uchmański et al 1993, Kleeberg and Dudel 1997, the concentration of Fe and Mn (Murphy et al 2001, Czerwieniec 2002, Søndergaard et al 2002, and bioturbation by macroinvertebrates (Andersson et al 1988, Tatrai 1988, Swan et al 2007.…”

Section: Introductionmentioning

confidence: 99%

The bottom sediments of Lake Uzarzewskie - a phosphorus source or sink?

Kowalczewska‐Madura

Gołdyn

Dondajewska

2010

Oceanological and Hydrobiological Studies

View full text Add to dashboard Cite

Phosphorus release from bottom sediments studied in two zones of Lake Uzarzewskie differing in depth and water oxygenation displayed seasonal and spatial variability. The experiments indicated that the lake receives considerable internal loading, especially from the deeper, anaerobic, rarely-mixed part of the lake. Meanwhile, the shallow zone situated in the 0-3 m depth range, could be a sink for phosphorus during spring and a source during other seasons of the year. The total loading of phosphorus from the bottom sediments was over 950 kg year -1 P, and 83% of this amount originated from the deeper part of the lake. The mean release from this part was 24.89 mg m -2 d -1 P and the maximum in fall was 35.4 mg m -2 d -1 P.

show abstract

“…The current lake was unintentionally created in 1905-1907, when the Colorado River flooded the Salton Basin for a period of 16 months. Profundal sediments are highly sulfidic, and sulfate reduction is suspected to be the dominant TEAP within these sediments (54). Based on elemental analysis (51) and 137 Cs activity (37) of sediment layers, a depth of ϳ22 cm marks the point when flooding of the Salton Basin occurred.…”

mentioning

confidence: 99%

Archaeal and Bacterial Communities Respond Differently to Environmental Gradients in Anoxic Sediments of a California Hypersaline Lake, the Salton Sea

Swan

Ehrhardt

Reifel

et al. 2010

Appl Environ Microbiol

Self Cite

113

View full text Add to dashboard Cite

Sulfidic, anoxic sediments of the moderately hypersaline Salton Sea contain gradients in salinity and carbon that potentially structure the sedimentary microbial community. We investigated the abundance, community structure, and diversity of Bacteria and Archaea along these gradients to further distinguish the ecologies of these domains outside their established physiological range. Quantitative PCR was used to enumerate 16S rRNA gene abundances of Bacteria, Archaea, and Crenarchaeota. Community structure and diversity were evaluated by terminal restriction fragment length polymorphism (T-RFLP), quantitative analysis of gene (16S rRNA) frequencies of dominant microorganisms, and cloning and sequencing of 16S rRNA. Archaea were numerically dominant at all depths and exhibited a lesser response to environmental gradients than that of Bacteria. The relative abundance of Crenarchaeota was low (0.4 to 22%) at all depths but increased with decreased carbon content and increased salinity. Salinity structured the bacterial community but exerted no significant control on archaeal community structure, which was weakly correlated with total carbon. Partial sequencing of archaeal 16S rRNA genes retrieved from three sediment depths revealed diverse communities of Euryarchaeota and Crenarchaeota, many of which were affiliated with groups previously described from marine sediments. The abundance of these groups across all depths suggests that many putative marine archaeal groups can tolerate elevated salinity (5.0 to 11.8% [wt/vol]) and persist under the anaerobic conditions present in Salton Sea sediments. The differential response of archaeal and bacterial communities to salinity and carbon patterns is consistent with the hypothesis that adaptations to energy stress and availability distinguish the ecologies of these domains.The vast majority of cultured Archaea isolates are characterized as extremophiles, which thrive under environmental extremes of temperature, pH, salinity, and oxygen availability. Unlike Bacteria, these organisms are well defined by select physiologies or catabolic activities. Cultivated halophilic archaea are obligate aerobes, and with a few exceptions (58), most 16S rRNA gene sequences affiliated with this physiological group have been recovered primarily from environments with oxygen present. Thermophilic archaea, many of which utilize hydrogen-based metabolisms, have temperature requirements that preclude their survival and growth in more moderate environments. Other archaeal physiological groups include acidophiles, which thrive in acidic and mostly hightemperature environments, the obligate anaerobic methanogens, which are capable of competing with Bacteria when more energetically favorable electron acceptors are not available (i.e., sulfate), and methane-oxidizing archaea, which require methane for energy production. Recent work on several Crenarchaeota isolates points to nitrification as their primary energy metabolism, but these organisms have been detected in cold, predominantly aerobic environ...

show abstract

Role of the polychaete Neanthes succinea in phosphorus regeneration from sediments in the Salton Sea, California

Cited by 30 publications

References 45 publications

Short-term effects of nereid polychaete size and density on sediment inorganic nitrogen cycling under varying oxygen conditions

Short-term effects of nereid polychaete size and density on sediment inorganic nitrogen cycling under varying oxygen conditions

The bottom sediments of Lake Uzarzewskie - a phosphorus source or sink?

Archaeal and Bacterial Communities Respond Differently to Environmental Gradients in Anoxic Sediments of a California Hypersaline Lake, the Salton Sea

Contact Info

Product

Resources

About