James W. Ammerman

4.8k citations

34 papers · 2.9k indexed · 1 hit paper · h-index 23

Oceanography top 0.5%
- Marine and coastal ecosystems 20
- Marine Biology and Ecology Research 4
Environmental Chemistry top 0.5%
- Aquatic Ecosystems and Phytoplankton Dynamics 11
Ecology top 1%
- Microbial Community Ecology and Physiology 10
- Isotope Analysis in Ecology 4
Pollution top 2%
- Wastewater Treatment and Nitrogen Removal 4
Geochemistry and Petrology top 5%
Biochemistry
- Amino Acid Enzymes and Metabolism 3
Immunology
- Aquaculture disease management and microbiota 3

Co-authors: Farooq Azam Marta Sebastián Sonya T. Dyhrman Jason B. Sylvan Richard A. Jahnke Benjamin Van Mooy Jed A. Fuhrman James B. Cotner
Cited by: Oceanography Environmental Chemistry Ecology
Partner nations: United States Netherlands Bermuda

In The Last Decade

James W. Ammerman

34 papers receiving 2.8k citations

Hit Papers

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What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

1996 The fate of nitrogen and phosphorus at the land-sea margin of the North Atlantic Ocean

Peers

Countries citing papers authored by James W. Ammerman

Since Specialization

Citations

This map shows the geographic impact of James W. Ammerman's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by James W. Ammerman with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites James W. Ammerman more than expected).

Fields of papers citing papers by James W. Ammerman

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by James W. Ammerman. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by James W. Ammerman. The network helps show where James W. Ammerman may publish in the future.

Co-authorship network

The 25 scholars most cited alongside James W. Ammerman, linked wherever they have co-authored with each other. Click a name or a connecting line to browse the papers they share.

Border = papers with James W. Ammerman Line = papers co-authored together James W. Ammerman links everyone, so they are left out of the graph.

All Works

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20 of 20 papers shown

#	Work
1	High-frequency Dissolved Oxygen Dynamics in an Urban Estuary, the Long Island Sound Melissa S. Duvall,James D. Hagy,James W. Ammerman,Mark A. Tedesco	2023	5
2	Molecular Response of the Bloom-Forming Cyanobacterium, Microcystis aeruginosa, to Phosphorus Limitation Matthew J. Harke,Dianna L. Berry,James W. Ammerman,Christopher J. Gobler	2011	106
3	Role of the phosphatase PhoX in the phosphorus metabolism of the marine bacterium Ruegeria pomeroyi DSS‐3 Marta Sebastián,James W. Ammerman	2011	37
4	Going West: Nutrient Limitation of Primary Production in the Northern Gulf of Mexico and the Importance of the Atchafalaya River Antonietta Quigg,Jason B. Sylvan,Anne B. Gustafson,Thomas Fisher,Rod L. Oliver,Sasha Tozzi,James W. Ammerman	2011	64
5	Mapping Phytoplankton Community Physiology on a River Impacted Continental Shelf: Testing a Multifaceted Approach Jason B. Sylvan,Antonietta Quigg,Sasha Tozzi,James W. Ammerman	2011	13
6	Dissolved inorganic and organic phosphorus uptake in Trichodesmium and the microbial community: The importance of phosphorus ester in the Sargasso Sea Elizabeth D. Orchard,James W. Ammerman,Michael W. Lomas,Sonya T. Dyhrman	2010	73
7	The alkaline phosphatase PhoX is more widely distributed in marine bacteria than the classical PhoA Marta Sebastián,James W. Ammerman	2009	181
8	Enzymatic assay of marine bacterial phosphatases by capillary electrophoresis with laser‐induced fluorescence detection Kimberly D. Chichester,Marta Sebastián,James W. Ammerman,Christa L. Colyer	2008	9
9	Eutrophication‐induced phosphorus limitation in the Mississippi River plume: Evidence from fast repetition rate fluorometry Jason B. Sylvan,Antonietta Quigg,Sasha Tozzi,James W. Ammerman	2007	61
10	A review of water column processes influencing hypoxia in the northern Gulf of Mexico M. Dagg,James W. Ammerman,Rainer M. W. Amon,Wayne S. Gardner,R. Green,Steven E. Lohrenz	2007	95
11	Phosphorus Limits Phytoplankton Growth on the Louisiana Shelf During the Period of Hypoxia Formation Jason B. Sylvan,Quay Dortch,David M. Nelson,Alisa F. Maier Brown,Wendy Morrison,James W. Ammerman	2006	175
12	Phosphorus Limitation of Phytoplankton Growth in the Mississippi River Plume: A Case for Dual Nutrient Control? James W. Ammerman,Jason B. Sylvan	2004	2
13	Microbial Metabolism and Nutrient Cycling in the Mississippi and Atchafalaya River Plumes J. Dean Pakulski,Ronald Benner,Terry E. Whitledge,Rainer M. W. Amon,B.J. Eadie,Luis A. Cifuentes,James W. Ammerman,Dean A. Stockwell	2000	84
14	Sulfur Cycling in the Terrestrial Subsurface: Commensal Interactions, Spatial Scales, and Microbial Heterogeneity Glenn A. Ulrich,Diego Martino,K.C. Burger,Joyanto Routh,Ethan L. Grossman,James W. Ammerman,Joseph M. Suflita	1998	52
15	Microbial Abundance and Activity in a Low-Conductivity Aquifer System in East-Central Texas Diego Martino,Ethan L. Grossman,Glenn A. Ulrich,K.C. Burger,Jeannette Leone Schlichenmeyer,Joseph M. Suflita,James W. Ammerman	1998	29
16	Pyrococcus horikoshii sp. nov., a hyperthermophilic archaeon isolated from a hydrothermal vent at the Okinawa Trough Juan Miguel González Grau,Y. Masuchi,Frank T. Robb,James W. Ammerman,Dennis Maeder,Miki Yanagibayashi,Jin Támaoka,Chiaki Kato	1998	191
17	Antarctic microbiology (E. I.Friedmann [ed.]) James W. Ammerman	1996	9
18	Bacterial 5′‐nucleotidase activity in estuarineand coastal marine waters: Role in phosphorus regeneration James W. Ammerman,Farooq Azam	1991	36
19	Bacterial 5-Nucleotidase in Aquatic Ecosystems: A Novel Mechanism of Phosphorus Regeneration James W. Ammerman,Farooq Azam	1985	164
20	Uptake of Cyclic AMP by Natural Populations of Marine Bacteria James W. Ammerman,Farooq Azam	1982	18

About James W. Ammerman

James W. Ammerman is a scholar working on Oceanography, Environmental Chemistry and Ecology, having authored 34 papers that have together received 2.9k indexed citations. Recurring topics across this work include Marine and coastal ecosystems (20 papers), Aquatic Ecosystems and Phytoplankton Dynamics (11 papers), Microbial Community Ecology and Physiology (10 papers), Marine Biology and Ecology Research (4 papers), Wastewater Treatment and Nitrogen Removal (4 papers), Isotope Analysis in Ecology (4 papers), Amino Acid Enzymes and Metabolism (3 papers) and Aquaculture disease management and microbiota (3 papers). The work is most often cited by research in Oceanography (1.8k citations), Environmental Chemistry (1.0k citations) and Ecology (1.3k citations). James W. Ammerman has collaborated with scholars based in United States, Netherlands and Bermuda. Frequent co-authors include Farooq Azam, Marta Sebastián, Sonya T. Dyhrman, Jason B. Sylvan, Richard A. Jahnke, Benjamin Van Mooy, Farooq Azam, Jed A. Fuhrman, James B. Cotner and Raleigh R. Hood.

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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