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TimestampProject NameProject Description (maximum 500 characters)Project Phase
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7/7/2026 14:13:35Metabolism models across lake gradientsUsing dissolved oxygen (DO) data, the Inverse Modeling Approach (IMA) estimates metabolism through production and respiration parameters. Since diel DO equations vary by organism-level factors and lakes present distinct environmental conditions, we hypothesize that different models suit different lake types. This project aims to test multiple equations to estimate GPP, R, and atmospheric flux across diverse lake gradients, including latitude, trophic status, and water clarity.Green (established and open to new collaborators)
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8/11/2026 22:17:32Planktothrix ProjectLook at the temporal and spatial distribution and drivers of Planktothrix blooms. We're proposing to tackle this with 4 subprojects: literature review, data contribution/existing datasets, coordinated international proposals, and coordinated sampling. The coordinated sampling will involve a) sampling once a mixing season, b) identifying Planktothrix with a phycoerythrin (PE) sensor- DCM, sample PE peak for cyanotoxins and phytoplankton.Green (established and open to new collaborators)
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8/13/2026 16:52:36Global under-ice zooplanktonThere is a gap in large-scale, under-ice zooplankton data. This project will address the question: What patterns and trends exist for zooplankton under ice? Open to collaborators who work on lakes with ice cover.Green (established and open to new collaborators)
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8/31/2026 18:14:53GLAMR, the Global LAke Metabolism RepositoryGLAMR is a centralized, public repository of ecosystem metabolism estimates and related data for lakes, ponds, reservoirs, and other lentic water bodies around the world. GLAMR includes raw data, derived metabolism estimates, lake characteristics, ancillary data, and rich metadata. We are building GLAMR and using it to ask questions about lake metabolism.Green (established and open to new collaborators)
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9/3/2026 16:01:24Super Enso effects on lakes This project will characterise the effects of the 2026/2027 El Niño on lakes around the world. We would like to compile temperature, oxygen, water level and chlorophyll data from many GLEON lakes and using a collaborative team effort, produce a paper which places any global or regional signals in a long term Context. Green (established and open to new collaborators)
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9/3/2026 16:52:14Over wintering phytoplankton: fasting or feeding?Question: When do nutrients limit phytoplankton growth in winter?
Hypotheses: Under light sufficient conditions, phytoplankton will be limited by nutrients. This will depend on lake type, ice and snow cover, and trophic status.
Approach: In situ assessment of nutrient limitation at 4 time points in ice covered lakes: early ice-on, light snow, heavy snow, ice off.
Green (established and open to new collaborators)
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9/3/2026 18:45:14FLARE: FLuorescence Assessment for Reliable Ecological monitoringThe premise of this project is to develop standardized fluorescence measurements for natural phytoplankton populations. This includes pigment verification, calibration, bias assessment, and physiological context.Green (established and open to new collaborators)
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9/3/2026 18:50:40LAWATOPLAWATOP seeks to use isotopes (H and O) in lakes to assess environmental impacts. The end goal is to set up a new global lakes isotope monitoring network. One of the ways in which these data can be used is in assessing how climate controls lake evaporation
Green (established and open to new collaborators)
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9/3/2026 19:10:01HEAT-EXTRACTHeat pumps are deployed to extract heat out of lakes and reservoirs, this project asks how this use affects stratification, mixing and water quality. In order to run these scenarios in GLM-AED, I'm looking for partners with temperature data from a deployed lake/reservoir heat pump system, so the model can be calibrated and validated against a real installation.Green (established and open to new collaborators)
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9/3/2026 19:13:05Automatic differentiation lake modelRight now, traditional models are based on numerical differentiation, i.e., finite differences, but (new) automatic differentiation language has vast potential for faster modeling, with implications for improved ecological calibration.

Approach:
1. conversion of Lake-M3 from numpy into JAX
2. test sensitivity, calibration & integration of AI

Products: faster models that can do global calibration and link deep learning natively
Green (established and open to new collaborators)
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9/3/2026 19:23:15Lake ice tipsRationale: Research in ice-covered lakes is logistically difficult. Critical need to compile detailed findings from previous experience
Objective: A revision of field-tested solutions and an expert network. Provide detailed field work tips and procedures for early-career researchers. Find solutions for unresolved ice-sampling issues.
Outputs: Web resources: digital material/media and documentation. Sampling/monitoring protocols and procedures. Peer-reviewed publications for specific topics
Green (established and open to new collaborators)
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9/4/2026 1:25:24Overtourism ImpactThis project aims to develop a framework for quantifying how tourism and recreation affect lake ecological status. Terrestrial systems have established carrying capacity methods, but equivalents for water bodies remain fragmented and rarely capture specific pathways through how activities alter lakes or to what extent. We plan to decompose tourism by activity type and link each to lake responses, integrating remote sensing, wastewater data, and WFD records to identify sustainable tourism levels.Green (established and open to new collaborators)
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9/4/2026 9:14:00Alt+C: harmonizing carbon and plastic in lakesA perspective paper developing a conceptual framework for integrating plastic-mediated C (plastogenic) into existing biogeochemical and ecological theoryGreen (established and open to new collaborators)
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9/4/2026 9:20:52SALEM: SAline Lake EMmissionsTo create a comprehensive database on CO2 and CH4 fluxes from inland saline lakes Green (established and open to new collaborators)
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9/4/2026 9:22:03FAME: Freshwater Aquatic Metabolism and Ecosystem ResponsesThis bibliographic project explores the potential of lake metabolism as an indicator of environmental change in lakes worldwide. We aim to investigate how lake metabolism influences oxygen dynamics, algal blooms, hydrodynamics, and greenhouse gas emissions by synthesizing evidence from studies across different regions and environmental conditions.Green (established and open to new collaborators)
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9/4/2026 9:24:50Thermal Stratification PhenologyOne of the most important factors regulating the physical and biogeochemical conditions in lakes is the phenology of thermal stratification. Using long-term data from well-studied GLEON study sites and individual lakes paired with ISIMIP 3a Local Lake Simulations, we plan to further investigate the generality of the predictions for earlier stratification onset and later breakdown as presented in Woolway et al. (2021). Green (established and open to new collaborators)
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9/4/2026 9:41:46Shifting CH4:CO2 ratios in perturbed ecosystems (CCRAP)Does the CH4:CO2 ratio shift in perturbed lake ecosystems? CH4 has a much higher GWP than CO2 and its production depends on anoxic conditions. We will follow a two-step approach where we'll 1) create a conceptual framework for anaerobic vs. aerobic metabolism building on the CO2/O2 relationship established in Vachon et al. (2020) by adding a 3rd axis for CH4, and 2) analyze existing lake CH4 & CO2 concentration data and a potential relationship between the CH4:CO2 ratio & ecosystem perturbation.Green (established and open to new collaborators)
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9/4/2026 12:14:28
PULSE – Physiological Understanding of Lakes through Sensor-based Ecophysiology
PULSE aims to develop new indices for monitoring phytoplankton physiology using dissolved oxygen rates rather than conventional concentration-based measurements. By integrating high-frequency DO dynamics with CO₂, pH, nitrogen, phosphorus, light and temperature, we will distinguish physiological signals from environmental variability and develop a simple, standardized protocol that can be applied across GLEON lakes.Green (established and open to new collaborators)
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9/8/2026 12:32:24ZigyStar and the Fauna from LakesZigy Star and the Fauna from Lakes asks a simple question: when eDNA metabarcoding detects a zooplankton taxon, is it expected, plausible, or surprising? We identified more than 9000 georeferenced sequencing runs and performed taxonomic searches on over 26 million reads. We are comparing those molecular detections with conventional occurrence records: GBIF, ZIG, LakePulse, and the US NLA to develop a plausibility score that brings sources of biodiversity evidence into a common framework.
Green (established and open to new collaborators)
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9/8/2026 16:48:54Under-Ice PulseThis project aims to uncover the role and drivers of under-ice ecosystem metabolism in lakes worldwide. We are trying to answer questions such as the relative contribution of under-ice metabolism to whole-year lake metabolism. We also examine how changes in ice phenology affect under-ice metabolism and identify places where our models fail to predict it. Green (established and open to new collaborators)
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9/9/2026 10:39:42Lake Surface RoughnessUsing Sentinel-1 SAR to quantify lake surface roughness as a mechanistic proxy for gas exchange coefficient (k), improving methane and CO₂ flux estimates. Integration with chamber and eddy covariance measurements develops lake-specific k parameterizations to reduce uncertainty in regional aquatic GHG budgets.Green (established and open to new collaborators)
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9/9/2026 10:42:35Bright LakesPelagic calcite precipitation matters for the global lake C budget. When very intense, calcification produces changes in lake color detectable from space.
We propose to combine remote sensing with in situ chemical data and knowledge from the GLEON community to better identify when where and why whiting events occur.		Green (established and open to new collaborators)
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9/9/2026 14:46:10Water Quality TriangleIt is assumed that countries with strong environmental policy, good public education and an engaged scientific community will have ecosystems of good quality. We will test this assumption, using lake water quality as an indicator. We will incorporate a variety of different data such as remote sensing data of chlorophyll-A, and different indices such as years in schooling, political corruption indices etc. We will begin by looking at the country scale, and then into regional and local examples. Green (established and open to new collaborators)
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9/11/2026 11:56:48
EcoFun: Estimating Lake Ecosystem Function(s) using in-situ and remote sensing data
We need spatially resolved lake metabolism estimates to understand ecosystem functions globally. Hyperspectral data can provide metabolism-related parameters, such as irradiance, Kd, chlorophyll-a, water transparency, CDOM and phytoplankton absorption. We aim to assess whether optical data can explain variations in primary production, photosynthetic activity and ecosystem metabolism by combining hyperspectral and in situ measurements and linking them to the GLAMR Project.Green (established and open to new collaborators)
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9/14/2026 14:37:13BRIDGE: Mapping community needs to the right data and expertiseThis project develops a practical framework for matching community research questions with suitable remote sensing data and expertise. It identifies research needs, required variables, sensors, models and validation data, relevant public and GLEON resources, remaining gaps, and access routes and contacts. The outcome is a living framework connecting research questions with available resources and expertise while highlighting priority gaps.Green (established and open to new collaborators)
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9/15/2026 6:14:00DDOGBY - Dead DOGs caused by Benthic cYanosA global survey of canine poisonings and mortalities associated with toxic planktonic and benthic cyanobacteria, based on scientific literature, gray literature, media reports, and other available sources. The project aims to identify geographic patterns, involved taxa and toxins, and assess whether these incidents represent an emerging environmental and animal-health issue.Green (established and open to new collaborators)
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2/19/2026 11:26:35Lake Climate AmplifiersLakes are increasingly viewed as potential amplifiers of climate change through greenhouse gas emissions, carbon cycling, and energy balance shifts. Yet the magnitude and persistence of these feedbacks remain uncertain. This project evaluates when lakes truly amplify warming by identifying key constraints—biogeochemical, physical, spatial, and temporal—that limit positive feedbacks, providing a clearer basis for integrating lakes into Earth system projections.Yellow (progressed but may be open to new collaborators in some contexts)
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6/24/2026 19:20:36Mind the GAP (MtG)Global climate models frequently underrepresent inland waters in the Global South due to historical data scarcity. MtG is an international initiative focused on improving the representation of Latin American and African lakes in global climate change assessments. By combining in situ observations with satellite remote sensing data, we will generate robust, long-term lake temperature time series to simulate and evaluate lake responses to future climate scenarios using the ISIMIP framework.Yellow (progressed but may be open to new collaborators in some contexts)
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6/26/2026 21:18:17Zooplankton as Indicators Group (ZIG)The Zooplankton as Indicators Group started in 2019 with the goal of building a large spatial and temporal dataset of zooplankton community composition, water parameters, and lake characteristics to understand zooplankton and their role as ecological indicators. In 2026, the dataset was finished and published with over 300 lakes world-wide and now will be used to answer numerous ecological questions in inland lakes and reservoirs. Yellow (progressed but may be open to new collaborators in some contexts)
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8/2/2026 17:25:24GLEON rotifersfunctional rotifer diversity dependent on global ecological driversYellow (progressed but may be open to new collaborators in some contexts)
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8/11/2026 22:25:06Global under-ice plankton DNA projectWhat large-scale patterns exist for phytoplankton under ice? In order to address this question, this project is a coordinated sampling effort involving water sample collection for genetic analysis/sequencing. We will be looking for the potential presence and abundance data, depending on methods.Yellow (progressed but may be open to new collaborators in some contexts)
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8/17/2026 17:08:37EH DOC Trends StudyWe investigate long-term trends in dissolved organic carbon (DOC) in lake and reservoir epilimnia and hypolimnia. We will analyze these trends to assess whether the epilimnion changes differently from the hypolimnion over time. Yellow (progressed but may be open to new collaborators in some contexts)
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9/3/2026 10:25:30Subseasonal Forecast in LakesWe are developing a reproducible workflow to assess and apply weekly forecasting (1-6 weeks in the future) in lake volume, temperature and thermocline depth. The workflow can be applied in reservoirs and natural lakes. The purpose is to decide whether the subseasonal prediction can be used for water management decisions and what would be its limitations. It would be great if you have 2-3 years of profile temperature data and a running GLM for your lake, but it’s open to anyone interested.Yellow (progressed but may be open to new collaborators in some contexts)
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9/6/2026 16:31:51Resilient LakesThis project is evaluating if and how the dominant color wavelength of lakes around the world changes (or maintains) as lakes experience changes in local land use. We are using published remote sensing datasets of lake color, land use classifications from NOAA, and lake basin / watershed characteristics from HydroLakes to evaluate changes in ~ 67,000 lakes from 1985-2016. We are especially interested to understand what conditions make lakes more color-resilient when experiencing land use change.Yellow (progressed but may be open to new collaborators in some contexts)
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9/6/2026 21:15:11
Microscopic Pandemic: semi-automated tracking of global host-parasite dynamics
Chytrid fungal parasite infections are a major driver of phytoplankton population dynamics, influencing carbon cycling in aquatic ecosystems. Host-parasite interactions remain poorly quantified at a global scale and sufficient frequency. We will implement a semi-automated workflow using FlowCam and machine-learning to classify phytoplankton taxa and their infection status, quantify host-parasite dynamics across lakes and identify the drivers and consequences of parasitic infection.Yellow (progressed but may be open to new collaborators in some contexts)
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9/14/2026 17:45:04M&M's (Mixing and Methane Synthesis)There is mounting evidence that mixing frequency may shape the variability in CH4 emissions observed within small lakes and ponds though this relationship is not well understood. The goal of this project is to synthesize existing mixing and methane data from small lakes and ponds to explore how mixing frequency shapes patterns in CH4 concentrations, emissions, and, if data availability allows, oxidation.
Yellow (progressed but may be open to new collaborators in some contexts)
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10/8/2026 10:56:15FUNPLASTICThe aim of the project is to carry out a large-scale, collaborative experiment investigating the biodiversity of the plastisphere (i.e. the biofilm that forms on plastic surfaces) and its influence on Net Ecosystem Production (NEP) across lakes with different trophic states and hydro-morphometric characteristics. The results will be scaled up using a modeling approach.Yellow (progressed but may be open to new collaborators in some contexts)
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6/16/2026 18:29:33L&O journals cHAB special issue & narrativeResearch articles on cyanobacterial blooms (cHABs) published in the Limnology and Ocanography journals (L&O; L&O Letters, Methods, and Bulletin) were curated for a special issue, and a narrative on these articles is being written to accompany the special issue. Red (near completion and no longer open to new collaborators)
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6/22/2026 17:12:56GLEON Moves the DialSynthesis of how GLEON has moved the dial for science, and scientists over its first 20 years,.Red (near completion and no longer open to new collaborators)
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7/10/2026 16:05:36MetOxConstraining surface methane concentrations and stable carbon isotopic signatures across lakes and reservoirsRed (near completion and no longer open to new collaborators)
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8/11/2026 22:20:09Thin Ice Network Lake SamplingTo explore how warming temperatures and shorter winters from climate change impact the biomass and toxicity of phytoplankton. Coordinated sampling once in summer and once in winter. Red (near completion and no longer open to new collaborators)
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9/3/2026 11:38:36ZooSizeThe ZooSize project assembled individual-scale microcrustacean body length measurements for freshwater lakes across global lake thermal regions to gain insights on macroecological patterns of size-structured zooplankton communities. Specific questions include: How do zooplankton size structure metrics (e.g., size diversity) change across lake thermal regions? How do other local biotic and abiotic factors (e.g., resource availability) shape variations in zooplankton size structure globally?Red (near completion and no longer open to new collaborators)
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9/10/2026 16:04:47Putting Parasites into PEGBuild parasites into the PEG model for seasonal succession by synthesizing research on: (1) How parasites respond to seasonal changes to the lake environment and their hosts; (2) The extent to which parasitism contributes to seasonal shifts in plankton communities, interactions, and ecosystem-level impacts. We are using a systematic literature survey and targeted review of lake seasonality studies to write a synthesis article that tackles multiple lines of inquiry.

Red (near completion and no longer open to new collaborators)
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9/8/2026 11:03:37Bee projectEffects of cyanotoxins on bees. The project is currently inactive as we want to have more information from our ongoing experiments before testing our hypothesis globally. However, please dont hesitate to show us your interest to become part of a collaboration in this topicGrey (currently inactive)
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3/26/2026 14:44:22DATN: Disappearing and appearing thermal nichesThe DATN project examined how climate change alters lake thermal habitats by causing thermal niches to appear or disappear. Using long-term temperature data from lakes worldwide, it quantified shifts in thermal niche availability and linked these to potential changes in species distributions. The work showed widespread restructuring of lake thermal habitat under warming, published as Climate change drives widespread shifts in lake thermal habitat (DOI: 10.1038/s41558-021-01060-3).Black (completed)
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6/19/2026 16:43:24DC-FLUXDC-FLUX was a project where we explored variation in CO2 emissions from lakes over the 24 hour diel cycle, was completed in 2025, and the result was published in LImnology and Ocenography Letters: de Eyto et al (2025), Diel variation in CO2 flux is substantial in many lakes. Limnol. Oceanogr. Lett, 10: 977-989. https://doi.org/10.1002/lol2.70066 Black (completed)
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6/19/2026 17:59:04Lakes as Temperature SentinelsLakes serve as sentinels for climate change and anthropogenic stressors, enveloped in changes in surface temperatures, deepwater temperatures, and vertical thermal gradients. In this project, we collected a global data set of long-term summertime in-situ vertical temperature profiles from 153 lakes. These time series have been published with a data paper (doi: 10.1038/s41597-021-00983-y) and a paper assessing patterns and drivers of trends in thermal structure (doi: 10.1038/s41598-020-76873-x).Black (completed)
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6/23/2026 14:09:12LakeEnsemblRCreation of an R package to run ensembles of 1D physical lake models. Ensemble approaches are a powerful method to capture uncertainty in models and are underused in limnology. Published: Moore et al., 2021 (doi:10.1016/j.envsoft.2021.105101)Black (completed)
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6/24/2026 14:54:15High-frequency light attenuation in global lakesWater clarity plays an important role in regulating many ecological processes, but is typically only measured monthly. This project used data from high-frequency underwater light sensors to determine variability in water clarity at shorter time scales (i.e. daily), and compared it to variability at longer time scales (i.e. monthly to decadal). We found that variability in water clarity followed Taylor's Law across broad spatial and temporal scales. https://doi.org/10.1111/ele.14451Black (completed)
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6/24/2026 15:09:26Lake ice trends"Long-term lake ice phenological records from around the Northern Hemisphere provide unique sensitive indicators of climatic variations, even prior to the existence of physical meteorological measurement stations. Here, we updated ice phenology records for 60 lakes with time-series ranging from 107–204 years to provide the first re-assessment of Northern Hemispheric ice trends since 2004 by adding 15 additional years of ice phenology records and 40 lakes to our study."Black (completed)
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6/24/2026 20:02:23IceBlitzIn this project we conducted a coordinated lake ice sampling campaign across the
Northern Hemisphere to assess the structure of lake ice and its causes and consequences.		Black (completed)
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6/25/2026 14:12:06Long-term dissolved oxygen trendsThis project sought to understand whether and how dissolved oxygen in lakes was responding to long-term surface temperature increases. Because solubility decreases with temperature, we anticipated that we would observe decreasing dissolved oxygen concentrations with rising temperature over time. In order to test this, we solicited long-term (at least 15 years) monitoring records of dissolved oxygen and temperature profiles, and ancillary data where available, from widely distributed lakes.Black (completed)
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7/7/2026 14:05:45Light dependency of lake primary productionThis project investigates daytime light dependency of net ecosystem production (NEP), evaluating metrics like light efficiency (α), NEPmax, Ic, and saturation (Ik) against available light in lakes. It tests hypotheses on light limitation (spring/fall), nutrient dominance (summer/tropics), and macrophyte saturation in shallow waters. It also explores how chemical, meteorological, and lake meta-parameters (depth, area, latitude) influence these light-response metrics.Black (completed)
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