Matches in SemOpenAlex for { <https://semopenalex.org/work/W2079799654> ?p ?o ?g. }
- W2079799654 endingPage "1283" @default.
- W2079799654 startingPage "1266" @default.
- W2079799654 abstract "Ectohydrolase activities of suspended microbiota were compared to those associated with sinking particles (sed-POM) retrieved from sediment traps deployed in the permanently anoxic Cariaco Basin. In shore-based assays, activities of aminopeptidase, β-glucosidase, chitinase and alkaline phosphatase were measured in samples obtained from oxic and anoxic depths using MUF- and MCA-labeled fluorogenic substrate analogs. Hydrolysis potentials for these enzymes in the seston varied widely over the nine cruises sampled (8 Nov 1996–3 May 2000) and among depths (15–1265 m); from <10 to over 1600 nM d−1 hydrolysate released, generally co-varying with one another and with suspended particulate organic carbon (POC) and particulate nitrogen (PN). Hydrolytic potentials, prokaryotic abundances and POC/PN concentrations in sinking debris were 400–1.3×107 times higher than in comparable volumes of seawater. However when normalized to PN, hydrolytic potentials in sediment trap samples were not demonstrably higher than in Niskin bottle samples. We estimate that PN pools in sediment trap samples were turned over 2–1400 times (medians=7–26x) slower by hydrolysis than were suspended PN pools. Median prokaryotic growth rates (divisions d−1) in sinking debris were also ∼150 times slower than for bacterioplankton. Hydrolytic potentials in surface oxic waters were generally faster than in underlying anoxic waters on a volumetric basis (nM hydrolysate d−1), but were not significantly (p>0.05) different when normalized to PN or prokaryote abundances. Alkaline phosphatase was consistently the most active ectohydrolase in both sample types, suggesting that Cariaco Basin assemblages were adapted to decomposing phosphate esters in organic polymers. However, phosphorus limitation was not evident from nutrient inventories in the water column. Results support the hypothesis that efficiencies of polymer hydrolysis in anoxic waters are not inherently lower than in oxic waters." @default.
- W2079799654 created "2016-06-24" @default.
- W2079799654 creator A5001857160 @default.
- W2079799654 creator A5026956758 @default.
- W2079799654 creator A5055594425 @default.
- W2079799654 creator A5081411807 @default.
- W2079799654 creator A5089664081 @default.
- W2079799654 date "2009-08-01" @default.
- W2079799654 modified "2023-09-27" @default.
- W2079799654 title "Hydrolytic ectoenzyme activity associated with suspended and sinking organic particles within the anoxic Cariaco Basin" @default.
- W2079799654 cites W1492883020 @default.
- W2079799654 cites W1498179391 @default.
- W2079799654 cites W1551966235 @default.
- W2079799654 cites W1598935036 @default.
- W2079799654 cites W1639495293 @default.
- W2079799654 cites W1870790299 @default.
- W2079799654 cites W19207140 @default.
- W2079799654 cites W1963686782 @default.
- W2079799654 cites W1965431589 @default.
- W2079799654 cites W1968153980 @default.
- W2079799654 cites W1969998251 @default.
- W2079799654 cites W1975222785 @default.
- W2079799654 cites W1977798279 @default.
- W2079799654 cites W1980272765 @default.
- W2079799654 cites W1981766601 @default.
- W2079799654 cites W1987302769 @default.
- W2079799654 cites W1990952341 @default.
- W2079799654 cites W1995581317 @default.
- W2079799654 cites W1995871881 @default.
- W2079799654 cites W1997213267 @default.
- W2079799654 cites W2006631544 @default.
- W2079799654 cites W2007623684 @default.
- W2079799654 cites W2013278565 @default.
- W2079799654 cites W2014065065 @default.
- W2079799654 cites W2016969072 @default.
- W2079799654 cites W2020013482 @default.
- W2079799654 cites W2025507953 @default.
- W2079799654 cites W2027697800 @default.
- W2079799654 cites W2031667720 @default.
- W2079799654 cites W2033461047 @default.
- W2079799654 cites W2034509594 @default.
- W2079799654 cites W2038331215 @default.
- W2079799654 cites W2041151178 @default.
- W2079799654 cites W2043792800 @default.
- W2079799654 cites W2044101592 @default.
- W2079799654 cites W2048490643 @default.
- W2079799654 cites W2049474764 @default.
- W2079799654 cites W2054645658 @default.
- W2079799654 cites W2054968094 @default.
- W2079799654 cites W2055136286 @default.
- W2079799654 cites W2055277357 @default.
- W2079799654 cites W2057037894 @default.
- W2079799654 cites W2060673598 @default.
- W2079799654 cites W2066924822 @default.
- W2079799654 cites W2067054041 @default.
- W2079799654 cites W2069017355 @default.
- W2079799654 cites W2071200869 @default.
- W2079799654 cites W2076697662 @default.
- W2079799654 cites W2077178387 @default.
- W2079799654 cites W2082316202 @default.
- W2079799654 cites W2082981619 @default.
- W2079799654 cites W2083574637 @default.
- W2079799654 cites W2089265180 @default.
- W2079799654 cites W2092613863 @default.
- W2079799654 cites W2094125246 @default.
- W2079799654 cites W2094489221 @default.
- W2079799654 cites W2095194886 @default.
- W2079799654 cites W2095976198 @default.
- W2079799654 cites W2101345724 @default.
- W2079799654 cites W2106085931 @default.
- W2079799654 cites W2108321004 @default.
- W2079799654 cites W2109291295 @default.
- W2079799654 cites W2110529897 @default.
- W2079799654 cites W2111188813 @default.
- W2079799654 cites W2117749235 @default.
- W2079799654 cites W2120254649 @default.
- W2079799654 cites W2123134406 @default.
- W2079799654 cites W2126878329 @default.
- W2079799654 cites W2130890445 @default.
- W2079799654 cites W2131995552 @default.
- W2079799654 cites W2132319741 @default.
- W2079799654 cites W2132825362 @default.
- W2079799654 cites W2136353155 @default.
- W2079799654 cites W2140738188 @default.
- W2079799654 cites W2144404706 @default.
- W2079799654 cites W2146706889 @default.
- W2079799654 cites W2160682499 @default.
- W2079799654 cites W2166106198 @default.
- W2079799654 cites W2170128170 @default.
- W2079799654 cites W2342165077 @default.
- W2079799654 cites W3148553502 @default.
- W2079799654 cites W78902862 @default.
- W2079799654 doi "https://doi.org/10.1016/j.dsr.2009.02.006" @default.
- W2079799654 hasPublicationYear "2009" @default.
- W2079799654 type Work @default.
- W2079799654 sameAs 2079799654 @default.
- W2079799654 citedByCount "32" @default.
- W2079799654 countsByYear W20797996542012 @default.