Reference health
Extracellular enzyme activity at the air–water interface of an estuarine lake
37/37 checkable references clean · checked 2026-07-22
Every reference with a DOI in the deposited reference list resolved to a known work in Crossref or DataCite at the dated check, and none carried a retraction, withdrawal, or removal notice.
13 without a DOI — not checked. A reference deposited without a DOI is never matched by title or guessed at; it stays outside the checked set, and this line discloses that.
The 37 checked references that resolve
resolves10.1016/S0043-1354(99)00415-7
The effects of sewage-works effluent on riverine extracellular aminopeptidase activity and microbial leucine assimilation
resolves10.3354/meps165059
Temperature dependence of microbial degradation of organic matter in marine sediments:polysaccharide hydrolysis, oxygen consumption, and sulfate reduction
resolves10.1126/science.255.5051.1561
Bulk Chemical Characteristics of Dissolved Organic Matter in the Ocean
resolves10.1111/j.1365-2109.1996.tb01249.x
Extracellular-enzyme activity in trout-farm effluents and a recipient river
resolves10.4319/lo.1998.43.6.1344
The trophic dynamics of riverine bacterioplankton: Relationships among substrate availability, ectoenzyme kinetics, and growth
resolves10.1023/A:1002933706785
Bacterial lipolytic activity in a hypertrophic dead arm of the river Danube in Vienna
resolves10.3354/meps011299
Significance of exoenzymatic activities in the ecology of brackish water: measurements by means of methylumbelliferyl-substrates
resolves10.3354/ame019139
Profiles of ectoenzymes in the Indian Ocean: phenomena of phosphatase activity in the mesopelagic zone
resolves10.1111/j.1365-2427.1995.tb00892.x
Microbial enzyme activities as indicators of organic matter processing rates in a Lake Erie coastal wetland
resolves10.3354/ame018247
Relations between bacterial nitrogen metabolism and growth efficiency in an estuarine and an open-water ecosystem
resolves10.3354/meps152027
Microbiological studies along a gradient of eutrophication in a shallow coastal inlet in the southern Baltic Sea (Nordrügensche Bodden)
resolves10.1016/S0304-4203(00)00116-X
Enhanced extracellular enzymatic peptide hydrolysis in the sea-surface microlayer
resolves10.3354/meps177027
Use of data assimilation techniques to analyze the significance of ectoproteolytic activity measurements performed with the model substrate MCA-Leu
resolves10.1126/science.281.5374.231
Major Bacterial Contribution to Marine Dissolved Organic Nitrogen
resolves10.1127/archiv-hydrobiol/145/1999/39
Relations between organic matter and bacterial proteolytic activity in sediment surface layers of a eutrophic lake (Lake Aydat, Puy de Dôme, France)
resolves10.1128/mr.55.3.335-348.1991
Fluorogenic and chromogenic substrates used in bacterial diagnostics
resolves10.3354/meps092089
Penplasmic aminopeptidase and alkaline phosphatase activities in a marine bacterium- implications for substrate processing in the sea
resolves10.3354/ame010223
Variability in ectohydrolytic enzyme activities of pelagic marine bacteria and its significance for substrate processing in the sea
resolves10.1006/ecss.2000.0719
Occurrence and Activity of Lipolytic Bacterioneuston and Bacterioplankton in the Estuarine Lake Gardno
resolves10.4319/lo.1994.39.1.0058
Organic content and bacterial metabolism in amorphous aggregations of the northern Adriatic Sea
resolves10.1023/A:1003106713091
Nutrient composition, microbial biomass and activity at the air–water interface of small boreal forest lakes
resolves10.3354/meps083233
Release of macromolecular organic complexes by heterotrophic marine flagellates
resolves10.3354/ame016087
Alkaline phosphatase activities and the relationship to inorganic phosphate in the Pomeranian Bight (southern Baltic Sea)
resolves10.3354/ame021139
Regulation of seasonal variability of aminopeptidase activities in surface and bottom waters of Uranouchi Inlet, Japan
resolves10.1016/0304-4203(90)90013-3
Downward flux of particulate fatty acids in the Central Arabian Sea
resolves10.3354/ame016143
Heterotrophic metabolism in a forest stream sediment: surface versus subsurface zones
resolves10.3354/meps041231
Proteolytic activity in coastal oceanic waters: depth distribution and relationship to bacterial populations
resolves10.1127/archiv-hydrobiol/121/1991/473
Composition and bacterial utilization of photosynthetically produced organic matter in an eutrophic lake
resolves10.1038/359139a0
Intense hydrolytic enzyme activity on marine aggregates and implications for rapid particle dissolution
resolves10.3354/ame021151
Matric and particulate phosphatase and aminopeptidase activity in limnetic biofilms
resolves10.1007/s002489900128
Ectoenzymatic Activity and Uptake of Monomers in Marine Bacterioplankton Described by a Biphasic Kinetic Model
resolves10.1139/m86-024
Microscopic enumeration of attached marine bacteria of seawater, marine sediment, fecal matter, and kelp blade samples following pyrophosphate and ultrasound treatments
resolves10.1127/archiv-hydrobiol/126/1992/193
Microbial decomposition of polymer organic matter related to plankton development in a reservoir: activity of α-, β-glucosidase, and β-N-acetylglucosaminidase and uptake of N-acetylglucosamine
resolves10.1016/0304-4203(86)90033-2
Chemical and microbiological studies of sea-surface films in the Southern Gulf of California and off the West Coast of Baja California
The 13 references without a DOI — listed, not checked
no DOI — not checkedEnvironmental control of the synthesis and activity of aquatic microbial ectoenzymes
no DOI — not checkedShort-term responses of the natural planktonic bacterial community to the changing water properties in an estuarine environment: ectoenzymatic activity, glucose incorporation and biomass production
no DOI — not checkedClassifying marine and estuarine natural communities: an alternative to the Cowardin system
no DOI — not checkedUse fluorogenic model substrates for extracellular enzyme activity (EEA) measurements of bacteria
no DOI — not checkedEcological significance of bacterial enzymes in marine environmenmt
no DOI — not checkedAminopeptidase activity in lakes of differing eutrophication
no DOI — not checkedThe air–water interface as an extreme environment
no DOI — not checkedEcological aspects of enzymatic activity in marine sediments
no DOI — not checkedNumbers and activity of lipolytic and amylolytic marine bacteria inhabiting surface microlayer and subsurface water
no DOI — not checkedChemical and bacteriological studies of surface and subsurface water layers in estuarine Lake Gradno
no DOI — not checkedOrganic composition and microbial utilization of dissolved organic matter
no DOI — not checkedOptimisation of measurement enzyme activity using fluorogenic substrates in water
no DOI — not checkedTrophic state of coastal lakes
What this badge says. CiteStamped means the CHECKABLE references of this
work were clean at the dated check: each resolved to a known work in a public registry, and none
carried a retraction notice at that time. It says nothing about the quality, findings,
or importance of the work itself, and nothing about references deposited without a DOI.
checked 2026-07-22 — re-checked daily as this page is visited; titles and statuses come from Crossref and DataCite and are not part of the signed record
Embed this badge
Both snippets point at the live badge image and link back to this page. The badge re-renders from the daily check, so an embed never goes stale by more than a day of visits.
<a href="https://citestamp.com/citestamped/10.1016/j.ecss.2003.08.001"><img src="https://citestamp.com/citestamped/10.1016/j.ecss.2003.08.001/badge.svg" alt="CiteStamped reference-health badge" width="460" height="64"></a>
[](https://citestamp.com/citestamped/10.1016/j.ecss.2003.08.001)