Karl E. Havens

16.4k citations

181 papers · 10.8k indexed · 3 hit papers · h-index 49

Impact in

Environmental Chemistry top 0.02%
- Aquatic Ecosystems and Phytoplankton Dynamics
- Soil and Water Nutrient Dynamics
Oceanography top 0.1%
- Marine and coastal ecosystems

Papers in

Environmental Chemistry 132
- Aquatic Ecosystems and Phytoplankton Dynamics 125
- Soil and Water Nutrient Dynamics 35
Oceanography 79
- Marine and coastal ecosystems 74

Co-authors: Hans W. Paerl Gene E. Likens Daniel J. Conley Christiane Lancelot Sybil P. Seitzinger Robert W. Howarth Donald F. Boesch R. Thomas James
Journals: Hydrobiologia (25 papers)Environmental Pollution (16 papers)Journal of Plankton Research (15 papers)Canadian Journal of Fisheries and Aquatic Sciences (13 papers)Freshwater Biology (9 papers)
Partner nations: United States China Denmark

In The Last Decade

Karl E. Havens

178 papers receiving 10.1k citations

Hit Papers

align trajectories log scale

Mitigating cyanobacterial harmful algal blooms in aquatic ecosystems impacted by climate change and anthropogenic nutrients 2016 · 505 citations

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if any of the following hold:

it has ≥500 total citations;
it reaches ≥1.5× the top-1% citation threshold for papers in the same subfield and year (the threshold is the minimum needed to enter the top 1%, not the average within it);
it reaches the top citation threshold in at least one of its specific research topics.

2016 Harmful Algae
2016 Environmental Science & Technology
2009 Science

Peers

Countries citing papers authored by Karl E. Havens

Since Specialization

Citations

This map shows the geographic impact of Karl E. Havens'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 Karl E. Havens with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Karl E. Havens more than expected).

Fields of papers citing papers by Karl E. Havens

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Karl E. Havens. 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 Karl E. Havens. The network helps show where Karl E. Havens may publish in the future.

Co-authorship network

The 25 scholars most cited alongside Karl E. Havens, 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 Karl E. Havens Line = papers co-authored together Karl E. Havens links everyone, so they are left out of the graph.

All Works

Sort: Min cites: Since: Top N: Style:

20 of 20 papers shown

#	Work
1	Toward predicting climate change effects on lakes: a comparison of 1656 shallow lakes from Florida and Denmark reveals substantial differences in nutrient dynamics, metabolism, trophic structure, and top-down control Inland Waters ·Erik Jeppesen, Daniel E. Canfield, Roger W. Bachmann, Martin Søndergaard, Karl E. Havens, Liselotte Sander Johansson, Torben L. Lauridsen, 赵红书, 小橋陽一郎, 宮本賢二朗, Gaohua Ji, Mark V. Hoyer	2020	40
2	Hurricanes, El Niño and harmful algal blooms in two sub-tropical Florida estuaries: Direct and indirect impacts Scientific Reports ·Edward J. Phli̇ps, Susan Badylak, Natalie G. Nelson, Karl E. Havens	2020	85
3	Ecological Responses of Lakes to Climate Change Water ·Karl E. Havens, Erik Jeppesen	2018	47
4	Natural Climate Variability Can Influence Cyanobacteria Blooms in Florida Lakes and Reservoirs SHILAP Revista de lepidopterología ·Karl E. Havens, Mark V. Hoyer, Edward J. Phli̇ps	2016	2
5	Collapse of a historic oyster fishery: diagnosing causes and identifying paths toward increased resilience Ecology and Society ·Edward V. Camp, William E. Pine, Karl E. Havens, Andrew S. Kane, Carl J. Walters, Tracy Irani, Tao Zhi-ling, Sonja I. Berndt	2015	57
6	Predicting Ecological Responses of the Florida Everglades to Possible Future Climate Scenarios: Introduction Environmental Management ·Nicholas G. Aumen, Karl E. Havens, G. Ronnie Best, Leonard L. Berry	2015	17
7	Cyanobacterial toxins: a qualitative meta–analysis of concentrations, dosage and effects in freshwater, estuarine and marine biota Advances in experimental medicine and biology ·Bas W. Ibelings, Karl E. Havens	2008	114
8	Simple Graphical Methods for the Interpretation of Relationships Between Trophic State Variables Lake and Reservoir Management ·Robert E. Carlson, Karl E. Havens	2005	99
9	Sustainability of Surface and Subsurface Water Resources: Case Studies from Florida and Michigan, U.S.A. OpenSIUC (Southern Illinois University Carbondale) ·Alan D. Steinman, John Anslinger, Karl E. Havens	2004	3
10	N:P ratios, light limitation, and cyanobacterial dominance in a subtropical lake impacted by non-point source nutrient pollution Environmental Pollution ·Karl E. Havens, R. Thomas James, Therese L. East, Val H. Smith	2003	327
11	The importance of considering biological processes when setting total maximum daily loads (TMDL) for phosphorus in shallow lakes and reservoirs Environmental Pollution ·Karl E. Havens, Claire L. Schelske	2001	85
12	Nutrient dynamics and the eutrophication of shallow lakes Kasumigaura (Japan), Donghu (PR China), and Okeechobee (USA) Environmental Pollution ·Karl E. Havens, Takehiko Fukushima, Ping Xie, Toshio Iwakuma, R. Thomas James, N. Takamura, Takayuki Hanazato, Takahiro Yamamoto	2001	188
13	Complex interactions between autotrophs in shallow marine and freshwater ecosystems: implications for community responses to nutrient stress Environmental Pollution ·Karl E. Havens, Jennifer Hauxwell, Anna Christina Tyler, Serge Thomas, Karen J. McGlathery, Just Cebrián, Iván Valiela, Alan D. Steinman, Soon‐Jin Hwang	2001	118
14	Localized Changes in Transparency Linked to Mud Sediment Expansion in Lake Okeechobee, Florida: Ecological and Management Implications Lake and Reservoir Management ·Karl E. Havens, R. Thomas James	1999	18
15	Water Levels and Total Phosphorus in Lake Okeechobee Lake and Reservoir Management ·Karl E. Havens	1997	22
16	Particulate light attenuation in a large subtropical lake Canadian Journal of Fisheries and Aquatic Sciences ·Karl E. Havens	1995	23
17	Seasonal and Spatial Variation in Algal Bloom Frequencies in Lake Okeechobee, Florida, U.S.A. Lake and Reservoir Management ·Karl E. Havens, W J Simpson, R. Thomas James	1994	42
18	Structural and functional responses of a freshwater plankton community to acute copper stress Environmental Pollution ·Karl E. Havens	1994	38
19	Zooplankton community responses to chemical stressors: A comparison of results from acidification and pesticide contamination research Environmental Pollution ·Karl E. Havens, Takayuki Hanazato	1993	78
20	Acid and aluminum effects on the survival of littoral macro-invertebrates during acute bioassays Environmental Pollution ·Karl E. Havens	1993	19

About Karl E. Havens

Karl E. Havens is a scholar working on Environmental Chemistry, Oceanography, Nature and Landscape Conservation, Ecology and Water Science and Technology, having authored 181 papers that have together received 10.8k indexed citations. Recurring topics across this work include Aquatic Ecosystems and Phytoplankton Dynamics (125 papers), Marine and coastal ecosystems (74 papers), Fish Ecology and Management Studies (53 papers), Soil and Water Nutrient Dynamics (35 papers), Aquatic Invertebrate Ecology and Behavior (29 papers), Water Quality and Pollution Assessment (23 papers), Environmental Toxicology and Ecotoxicology (22 papers) and Isotope Analysis in Ecology (18 papers). The work is most often cited by research in Environmental Chemistry (6.9k citations), Oceanography (4.1k citations), Water Science and Technology (2.5k citations), Nature and Landscape Conservation (2.0k citations) and Ecology (4.1k citations). Karl E. Havens has collaborated with scholars based in United States, China and Denmark. Frequent co-authors include Hans W. Paerl, Gene E. Likens, Daniel J. Conley, Christiane Lancelot, Sybil P. Seitzinger, Robert W. Howarth, Donald F. Boesch, R. Thomas James, Therese L. East and John R. Beaver. Their work appears in journals such as Hydrobiologia, Environmental Pollution, Journal of Plankton Research, Canadian Journal of Fisheries and Aquatic Sciences and Freshwater Biology.

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.

Explore authors with similar magnitude of impact