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Ubiquity and diversity of ammonia-oxidizing archaea in water columns and sediments of the ocean.
TLDR
Using PCR primers designed to specifically target archaeal amoA, AOA is found to be pervasive in areas of the ocean that are critical for the global nitrogen cycle, including the base of the euphotic zone, suboxic water columns, and estuarine and coastal sediments. Expand
Analysis of nitrite reductase (nirK and nirS) genes and cultivation reveal depauperate community of denitrifying bacteria in the Black Sea suboxic zone.
TLDR
Analysis of the recently discovered nirS gene from the anammox bacterium Candidatus'Kuenenia stuttgartiensis' revealed that mismatches with commonly used primers may have prevented the previous detection of this divergent sequence, which appears to harbour a homogeneous community of denitrifiers. Expand
Distribution and Diversity of Archaeal Ammonia Monooxygenase Genes Associated with Corals
TLDR
The 210 coral-associated archaeal amoA sequences recovered in this study were broadly distributed phylogenetically, with most only distantly related to previously reported sequences from coastal/estuarine sediments and oceanic water columns. Expand
Method for the analysis of oxygen isotopic composition of soil phosphate fractions.
TLDR
Results indicate that all soil fractions analyzed have been impacted to some degree by biologically enzyme mediated cycling of P in the soil. Expand
Toxic diatoms and domoic acid in natural and iron enriched waters of the oceanic Pacific
TLDR
The neurotoxin DA occurs both in coastal and oceanic waters, and its concentration, associated with changes in Pseudo-nitzschia abundance, likely varies naturally with climate cycles, as well as with artificial iron fertilization. Expand
Pseudo‐nitzschia blooms, domoic acid, and related California sea lion strandings in Monterey Bay, California
TLDR
The links between strandings of California sea lions suffering from domoic acid toxicity, toxic cell numbers, and their associated DA concentration in Monterey Bay and in sea lion feces were examined from 2004 to 2007. Expand
Internal loading of phosphate in Lake Erie Central Basin.
TLDR
The isotopic signature of phosphate in the extractable fraction of the sediments can explain the non-equilibrium isotope values of dissolved phosphate inThe deep water of the central basin of Lake Erie, and this is consistent with sediments as an important internal source of P in the Lake. Expand
Complexity of domoic acid-related sea lion strandings in Monterey Bay, California: foraging patterns, climate events, and toxic blooms
TLDR
Links between DA-related strandings of the seasonally migratory California sea lion Zalophus californianus and regional occurrences of DA-producing diatoms using a decade-long time series suggest a more complex pattern of stranding than anticipated. Expand
Enhanced solubility and ecological impact of atmospheric phosphorus deposition upon extended seawater exposure.
TLDR
The results suggest that atmospheric P dissolution could continue over multiple days once reaching the surface ocean, and that previous estimates of atmospheric P deposition may underestimate the contribution from this source. Expand
Oxygen isotopes of phosphate and soil phosphorus cycling across a 6500 year chronosequence under lowland temperate rainforest
Abstract Phosphorus (P) availability declines during ecosystem development due in part to chemical transformations of P in the soil. Here we report changes in soil P pools and the oxygen isotopicExpand
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