Global Lake Ecological Observatory Network (GLEON) is an international grass-roots, voluntary

network Network, networking and networked may refer to: Science and technology * Network theory, the study of graphs as a representation of relations between discrete objects * Network science, an academic field that studies complex networks Mathematics ...

of researchers, educators, and community groups interested in making and utilizing

time series In mathematics, a time series is a series of data points indexed (or listed or graphed) in time order. Most commonly, a time series is a sequence taken at successive equally spaced points in time. Thus it is a sequence of discrete-time data. ...

high-frequency High frequency (HF) is the International Telecommunication Union, ITU designation for the radio band, band of radio waves with frequency between 3 and 30 megahertz (MHz). It is also known as the decameter band or decameter wave as its wavelengt ...

observations made on and in

lake A lake is often a naturally occurring, relatively large and fixed body of water on or near the Earth's surface. It is localized in a basin or interconnected basins surrounded by dry land. Lakes lie completely on land and are separate from ...

s and

reservoirs A reservoir (; ) is an enlarged lake behind a dam, usually built to store fresh water, often doubling for hydroelectric power generation. Reservoirs are created by controlling a watercourse that drains an existing body of water, interrup ...

all over the world. GLEON includes more than 60 lake observatories and more than 850 individual members from 62 countries on six continents (as of January 2021). GLEON uses innovative human capacity building for discovery, solving problems, catalyzing and creating learning communities, education,

FAIR data FAIR data is data which meets the FAIR principles of findability, accessibility, interoperability, and reusability (FAIR). The acronym and principles were defined in a March 2016 paper in the journal '' Scientific Data'' by a consortium of sc ...

, and

Open Science Open science is the movement to make scientific research (including publications, data, physical samples, and software) and its dissemination accessible to all levels of society, amateur or professional. Open science is transparent and accessib ...

Goals

The goal is to understand, predict, and communicate the impact of natural and anthropogenic influences on lake and reservoir

ecosystems An ecosystem (or ecological system) is a system formed by Organism, organisms in interaction with their Biophysical environment, environment. The Biotic material, biotic and abiotic components are linked together through nutrient cycles and en ...

. The researchers include limnologists,

ecologists This is a list of notable ecologists. A-D * John Aber (United States) * Aziz Ab'Saber (Brazil) * Charles Christopher Adams (United States) * Warder Clyde Allee (United States) * Herbert G. Andrewartha (Australia) * Sarah Martha Baker ( ...

information technology Information technology (IT) is a set of related fields within information and communications technology (ICT), that encompass computer systems, software, programming languages, data processing, data and information processing, and storage. Inf ...

experts, and

engineers Engineers, as practitioners of engineering, are professionals who invent, design, build, maintain and test machines, complex systems, structures, gadgets and materials. They aim to fulfill functional objectives and requirements while consider ...

who have a common objective of building and growing a scalable, persistent network of lake ecology observatories; developing new theoretical models based on the more extensive spatial and temporal scales of data; integrating new technologies to utilize the data; educating a new generation of researchers in team science; and engaging the public. Each lake or reservoir observatory consists of one or more instrumented platforms capable of sensing key

limnological Limnology ( ; ) is the study of inland aquatic ecosystems. It includes aspects of the biological, chemical, physical, and geological characteristics of fresh and saline, natural and man-made bodies of water. This includes the study of lakes, r ...

variables and moving the data in near-real time to web-accessible databases. The types of

sensors A sensor is often defined as a device that receives and responds to a signal or stimulus. The stimulus is the quantity, property, or condition that is sensed and converted into electrical signal. In the broadest definition, a sensor is a devi ...

employed at these observatories include: temperature, dissolved

oxygen Oxygen is a chemical element; it has chemical symbol, symbol O and atomic number 8. It is a member of the chalcogen group (periodic table), group in the periodic table, a highly reactivity (chemistry), reactive nonmetal (chemistry), non ...

, dissolved

carbon dioxide Carbon dioxide is a chemical compound with the chemical formula . It is made up of molecules that each have one carbon atom covalent bond, covalently double bonded to two oxygen atoms. It is found in a gas state at room temperature and at norma ...

phytoplankton Phytoplankton () are the autotrophic (self-feeding) components of the plankton community and a key part of ocean and freshwater Aquatic ecosystem, ecosystems. The name comes from the Greek language, Greek words (), meaning 'plant', and (), mea ...

pigments A pigment is a powder used to add or alter color or change visual appearance. Pigments are completely or nearly solubility, insoluble and reactivity (chemistry), chemically unreactive in water or another medium; in contrast, dyes are colored sub ...

such as

chlorophyll Chlorophyll is any of several related green pigments found in cyanobacteria and in the chloroplasts of algae and plants. Its name is derived from the Greek words (, "pale green") and (, "leaf"). Chlorophyll allows plants to absorb energy ...

and

phycocyanin Phycocyanin is a pigment-protein complex from the light-harvesting phycobiliprotein family, along with allophycocyanin and phycoerythrin. It is an accessory pigment to chlorophyll. All phycobiliproteins are water-soluble, so they cannot exist ...

, as well as devices that detect water movements such as acoustic

Doppler The Doppler effect (also Doppler shift) is the change in the frequency of a wave in relation to an observer who is moving relative to the source of the wave. The ''Doppler effect'' is named after the physicist Christian Doppler, who described ...

current profilers ( ADCP.) Many of the observatories also track

meteorological Meteorology is the scientific study of the Earth's atmosphere and short-term atmospheric phenomena (i.e. weather), with a focus on weather forecasting. It has applications in the military, aviation, energy production, transport, agriculture ...

parameters on the lake such as

solar radiation Sunlight is the portion of the electromagnetic radiation which is emitted by the Sun (i.e. solar radiation) and received by the Earth, in particular the visible light perceptible to the human eye as well as invisible infrared (typically p ...

, wind speed, and relative humidity. Data from the network of observatories will allow a better understanding of key processes such as the effects of climate and land use change on lake or reservoir function, the role of episodic events such as

typhoons A typhoon is a tropical cyclone that develops between 180° and 100°E in the Northern Hemisphere and which produces sustained hurricane-force winds of at least . This region is referred to as the Northwestern Pacific Basin, accounting for a ...

in resetting aquatic dynamics, and

carbon Carbon () is a chemical element; it has chemical symbol, symbol C and atomic number 6. It is nonmetallic and tetravalence, tetravalent—meaning that its atoms are able to form up to four covalent bonds due to its valence shell exhibiting 4 ...

cycling within lakes and reservoirs.

Participating lakes and organizations

* Lough Feeagh, County Mayo, Ireland * Lake Erken, Uppsala University, Sweden * Douglas Lake,

University of Michigan Biological Station The University of Michigan Biological Station (UMBS) is a research and teaching facility operated by the University of Michigan. It is located on the south shore of Douglas Lake in Cheboygan County, Michigan. The station consists of 10,000 acre ...

, Michigan, USA * Sparkling Lake, Wisconsin USA * Trout Bog Lake (Vilas County, Wisconsin) * Crystal Bog Lake, Wisconsin, USA * Trout Lake, Wisconsin, USA *

Lake Mendota Lake Mendota is a freshwater eutrophic lake that is the northernmost and largest of the four lakes in Madison, Wisconsin, Madison, Wisconsin. The lake borders Madison on the north, east, and south, Middleton, Wisconsin, Middleton on the west, Sho ...

Wisconsin Wisconsin ( ) is a U.S. state, state in the Great Lakes region, Great Lakes region of the Upper Midwest of the United States. It borders Minnesota to the west, Iowa to the southwest, Illinois to the south, Lake Michigan to the east, Michig ...

, USA *

Lake Sunapee Lake Sunapee is located within Sullivan County, New Hampshire, Sullivan County and Merrimack County, New Hampshire, Merrimack County in western New Hampshire, the United States. It is the fifth-largest lake located entirely in New Hampshire. Th ...

New Hampshire New Hampshire ( ) is a U.S. state, state in the New England region of the Northeastern United States. It borders Massachusetts to the south, Vermont to the west, Maine and the Gulf of Maine to the east, and the Canadian province of Quebec t ...

Lake Rotorua Lake Rotorua () is the second largest lake in the North Island of New Zealand by surface area, and covers 79.8 km2. With a mean depth of only 10 metres it is considerably smaller than nearby Lake Tarawera in terms of volume of water. It i ...

, New Zealand * Yuan-Yang Lake, Taiwan * Lake Kinneret, Israel * Chaffey Dam, Nundle, NSW * Euiam, South Korea *

Soyang Soyang is a town and Village Development Committee in Ilam District in the Province No. 1 of eastern Nepal. At the time of the 1991 Nepal census The 1991 Nepal census was a widespread national census conducted by the Nepal Central Bureau of St ...

, South Korea * Lake Paajarvi, Lammi Finland * Lake Annie, Lake Placid, Florida *

Lake Tai Taihu (), also known as Lake Tai or Lake Taihu, is a lake in the Yangtze Delta and the third largest freshwater lake in China. The lake is in Jiangsu province and a significant part of its southern shore forms its border with Zhejiang. With ...

hu, Jiangsu Province, China * West Long Lake, University of Notre Dame Environmental Research Center, Michigan, USA * Big Spirit Lake, Spirit Lake, Iowa, USA

External links

GLEON website

Lake Sunapee Protective Association
* Wikiproject Lakes {{authority control Ecological observatories Limnology Environmental data