A.C. Redfield Lifetime Achievement Award
Encyclopedia
The Lifetime Achievement Award was first presented in 1994 to honor major long-term achievements in the fields of limnology
Limnology
Limnology , also called freshwater science, is the study of inland waters. It is often regarded as a division of ecology or environmental science. It covers the biological, chemical, physical, geological, and other attributes of all inland waters...

 and oceanography
Oceanography
Oceanography , also called oceanology or marine science, is the branch of Earth science that studies the ocean...

, including research, education and service to the community and society. In 2004, the American Society of Limnology and Oceanography
American Society of Limnology and Oceanography
Initiated in 1947, the American Society of Limnology and Oceanography is a scientific society with the goal of Advancing the Sciences of Limnology and Oceanography. With approximately 4000 members in nearly 60 different countries, ASLO is the largest scientific society, worldwide, devoted to...

 Board renamed the award in honor of Alfred C. Redfield
Alfred C. Redfield
Alfred Clarence Redfield was an American oceanographer.He is especially known for having discovered the Redfield ratio, which describes the ratio between nutrients in plankton and ocean water. In 1966, he received the Eminent Ecologist Award from the Ecological Society of America...

.

Recipients

Recipient Rationale
1994 Kenneth H. Mann "In recognition of his significant achievements in the aquatic sciences, his contributions to the stature of these fields, and his role as a model for those at earlier career stages"
1995 Clifford H. Mortimer "In recognition of his lasting and substantive contributions across disciplines of aquatic biology, chemistry and physics, his leadership, and his general commitment to excellence"
1996 Ruth Patrick
Ruth Patrick
Dr. Ruth Myrtle Patrick is a botanist and limnologist specializing in diatoms and freshwater ecology, who developed ways to measure the health of freshwater ecosystems and established a number of research facilities. She attended the Sunset Hill School in Kansas City, Missouri, graduating in 1925....

"For her outstanding contributions to aquatic ecology and environmental problem solving, her pioneering work on algae
Algae
Algae are a large and diverse group of simple, typically autotrophic organisms, ranging from unicellular to multicellular forms, such as the giant kelps that grow to 65 meters in length. They are photosynthetic like plants, and "simple" because their tissues are not organized into the many...

 as indicators of water quality
Water quality
Water quality is the physical, chemical and biological characteristics of water. It is a measure of the condition of water relative to the requirements of one or more biotic species and or to any human need or purpose. It is most frequently used by reference to a set of standards against which...

, and her leadership as an educator within and outside of academia"
1997 Alan R. Longhurst "In recognition of sustained excellence in the study of marine
Marine (ocean)
Marine is an umbrella term. As an adjective it is usually applicable to things relating to the sea or ocean, such as marine biology, marine ecology and marine geology...

 food webs and biogeography
Biogeography
Biogeography is the study of the distribution of species , organisms, and ecosystems in space and through geological time. Organisms and biological communities vary in a highly regular fashion along geographic gradients of latitude, elevation, isolation and habitat area...

, and of outstanding leadership in the development of international collaboration and in the administration of world-renowned oceanographic
Oceanography
Oceanography , also called oceanology or marine science, is the branch of Earth science that studies the ocean...

 programs"
1998 Karl Banse "For his prolific, diverse, and seminal papers on key oceanographic issues, rigorous application of the scientific method
Scientific method
Scientific method refers to a body of techniques for investigating phenomena, acquiring new knowledge, or correcting and integrating previous knowledge. To be termed scientific, a method of inquiry must be based on gathering empirical and measurable evidence subject to specific principles of...

, high intellectual standards, and excellence in teaching"
1999 Charles S. Yentsch "For sustained and innovative contributions in the fields of phytoplankton pigments
Photosynthetic pigment
A photosynthetic pigment is a pigment that is present in chloroplasts or photosynthetic bacteria and captures the light energy necessary for photosynthesis.- Plants :...

 and productivity
Primary production
400px|thumb|Global oceanic and terrestrial photoautotroph abundance, from September [[1997]] to August 2000. As an estimate of autotroph biomass, it is only a rough indicator of primary production potential, and not an actual estimate of it...

, optical properties and remote sensing
Remote sensing
Remote sensing is the acquisition of information about an object or phenomenon, without making physical contact with the object. In modern usage, the term generally refers to the use of aerial sensor technologies to detect and classify objects on Earth by means of propagated signals Remote sensing...

, and for establishing and sustaining oceanographic initiatives and programs"
2000 Ramon Margalef
Ramón Margalef
Ramon Margalef i López was Emeritus Professor of Ecology at the Faculty of Biology of the University of Barcelona. Margalef, unquestionably one of the most important scientists that Spain has produced , worked at the Institute of Applied Biology , and at the Fisheries Research Institute, which he...

"For his research and teaching on the subjects of plankton succession and the role of physical processes in structuring plankton communities that have guided the oceanography field for four decades"
2001 Jack Vallentyne "For his exemplary research contributions in paleolimnology
Paleolimnology
Paleolimnology is a scientific subdiscipline closely related to both limnology and paleoecology. Palaeolimnological studies are concerned with reconstructing the paleoenvironments of inland waters – and especially changes associated with such events as climatic change, human impacts , and...

, biogeochemistry
Biogeochemistry
Biogeochemistry is the scientific discipline that involves the study of the chemical, physical, geological, and biological processes and reactions that govern the composition of the natural environment...

 and eutrophication
Eutrophication
Eutrophication or more precisely hypertrophication, is the movement of a body of water′s trophic status in the direction of increasing plant biomass, by the addition of artificial or natural substances, such as nitrates and phosphates, through fertilizers or sewage, to an aquatic system...

; outstanding administrative accomplishments in forming and fostering the Experimental Lakes Area; and passionate efforts in educating children in environmental, ecological and limnological issues"
2002 John J. Magnuson "For his extensive and effective service to the limnological and oceanographic communities, including leadership in national and international programs that have strengthened both science and policy, and for his seminal approaches to the community ecology of lakes and lake districts"
2003 John J. Gilbert "For developing and sustaining the field of rotifer
Rotifer
The rotifers make up a phylum of microscopic and near-microscopic pseudocoelomate animals. They were first described by Rev. John Harris in 1696, and other forms were described by Anton van Leeuwenhoek in 1703...

 ecology
Ecology
Ecology is the scientific study of the relations that living organisms have with respect to each other and their natural environment. Variables of interest to ecologists include the composition, distribution, amount , number, and changing states of organisms within and among ecosystems...

 and biology; for successful mentorship for more than a quarter century; and for vital service contributions to the national and international communities of limnologists and oceanographers"
2004 Charles R. Goldman "For his enduring efforts to understand and protect Lake Tahoe
Lake Tahoe
Lake Tahoe is a large freshwater lake in the Sierra Nevada of the United States. At a surface elevation of , it is located along the border between California and Nevada, west of Carson City. Lake Tahoe is the largest alpine lake in North America. Its depth is , making it the USA's second-deepest...

, his inspiring mentorship of numerous students who themselves have made lasting scientific contributions, and for his tireless advocacy for limnological research, training and stewardship worldwide"
2005 Andre Morel "For leading our modern understanding of ocean color
Ocean color
The "color" of the ocean is determined by the interactions of incident light with substances or particles present in the water.For pure ocean water, such like the open ocean water, it appears as a very dark navy blue. The reason the ocean is blue is due to the absorption and scattering of light...

, particularly in Case 1 waters, where the optical properties are dominated by biology; and for fundamental work in the interpretation of satellite observations of ocean color"
2006 Tom Fenchel
Tom Fenchel
Tom Michael Fenchel is a Danish marine ecologist and professor first at the University of Aarhus, later at the University of Copenhagen. He is a highly cited scientist and known for, among other things, Fenchel's Law. He holds PhD and D.Sc...

"For opening our eyes to the fascinating world of low Reynolds numbers and rapid diffusion
Diffusion
Molecular diffusion, often called simply diffusion, is the thermal motion of all particles at temperatures above absolute zero. The rate of this movement is a function of temperature, viscosity of the fluid and the size of the particles...

 and to the amazing adaptations of chemotactic and locomotive behaviour developed by protozoa
Protozoa
Protozoa are a diverse group of single-cells eukaryotic organisms, many of which are motile. Throughout history, protozoa have been defined as single-cell protists with animal-like behavior, e.g., movement...

 and bacteria
Bacteria
Bacteria are a large domain of prokaryotic microorganisms. Typically a few micrometres in length, bacteria have a wide range of shapes, ranging from spheres to rods and spirals...

 to life in a heterogenerous world"
2007 Jörg Imberger "For major contributions in physical limnology and particularly for fundamental insights into lake stratification
Lake stratification
Lake stratification is the separation of lakes into three layers:# Epilimnion - top of the lake.# Metalimnion - middle layer that may change depth throughout the day.# Hypolimnion - the bottom layer....

 and mixing dynamics
Mixed layer
The oceanic or limnological mixed layer is a layer in which active turbulence has homogenized some range of depths. The surface mixed layer is a layer where this turbulence is generated by winds, cooling, or processes such as evaporation or sea ice formation which result in an increase in salinity...

 through observational, theoretical and modeling studies"
2008 John Hobbie "For contributions in the field of aquatic microbial ecology
Microbial ecology
Microbial ecology is the ecology of microorganisms: their relationship with one another and with their environment. It concerns the three major domains of life — Eukaryota, Archaea, and Bacteria — as well as viruses....

 and involvement with the development of important institutions and research programs"
2009 Peter J. LeB. Williams "For his outstanding contributions to our understanding of oceanic productivity, carbon cycling
Carbon cycle
The carbon cycle is the biogeochemical cycle by which carbon is exchanged among the biosphere, pedosphere, geosphere, hydrosphere, and atmosphere of the Earth...

 and metabolic balance
Primary production
400px|thumb|Global oceanic and terrestrial photoautotroph abundance, from September [[1997]] to August 2000. As an estimate of autotroph biomass, it is only a rough indicator of primary production potential, and not an actual estimate of it...

 and for his role in shaping current views on the importance of microbial processes
Microbial loop
The microbial loop describes a trophic pathway in the marine microbial food web where dissolved organic carbon is returned to higher trophic levels via the incorporation into bacterial biomass, and coupled with the classic food chain formed by phytoplankton-zooplankton-nekton. The term microbial...

 in the oceans"
2010 James F. Kitchell "For field-changing contributions in the areas of fish ecology and fisheries, trophic dynamics, and understanding the role of fish in aquatic ecosystems."


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