Global Lake Ecological Observatory Network

GLEON 2022 All Hands' Meeting
2022-10-30 - 2022-11-04 | Lake George, NY USA, 87 Silver Bay Rd, Silver Bay, NY, 12784, United States
The GLEON 2022 Meeting was held 30 October – 4 November, 2022 at the Silver Bay YMCA Conference and Family Retreat Center at Lake George, New York, USA.
Attendees arrived at Lake George by Saturday (students and workshop attendees) or Sunday (for the main meeting) and departed the following Friday and Saturday.
Note: Due to the consequences of the war in Ukraine, the GLEON Steering Committee decided in March 2022 to postpone the planned GLEON All Hands’ Meeting in Poland from June 2022 to June 2023 and the planned meeting in Indonesia from 2023 to 2025. Virtual All Hands’ Meetings were added to the schedule in 2023 and 2024. GLEON was grateful to the local partners on Lake George and Lake Champlain for hosting our 2022 meeting on short notice.

GLEON 2023 Virtual All Hands' Meeting
2023-02-13 - 2023-02-17
The GLEON 2023 Virtual All Hands’ Meeting, 13-17 February 2023 was held in the GatherTown online meeting space following a similar program and weekly schedule for online meeting activities as before (see below for a Program Overview).
With the success of the GLEON 2021 Virtual Meeting and return to an in-person format at the GLEON 2022 Meeting at Lake George, New York, the Steering Committee recognized the value of both meeting formats to facilitate the inclusiveness of online meetings and the kinds of interactions at in-person meetings that are key to the network’s collaborative approach to lake science. They made a commitment to organize All Hands’ Meetings in both online and in-person formats in 2023.
The hashtag #GLEON2023Virtual will be used for social media.
Program Overview

Pre-recorded Workshops with live Q&A during the virtual meeting
Working Group and Ad hoc meetings
Poster Session
Daily plenary talks or panel discussions
Informal networking and social activities
Training on collaborative science and working group facilitation
Regional Meetings (tentative)

Preliminary Schedule
Registered meeting participants will receive an email a week before the meeting with connection instructions for the GatherTown meeting platform, a detailed program, and other meeting information. Here is a preliminary schedule of live sessions to help with planning your schedule for the week:

Day 1 – Monday, 13 February 2023: 13:00 – 17:00 UTC
Day 2 – Tuesday, 14 February 2023: 14:00 – 18:00 UTC
Day 3 – Wednesday, 15 February 2023: 12:00 – 16:00 UTC
Day 4 – Thursday, 16 February 2023: 10:00 – 14:00 UTC
Day 5 – Friday, 17 February 2023: 10:00 – 15:00 UTC (unstructured time for ad hoc meetings)
Regional Meetings

Workshops
The GLEON Student Association (GSA) workshop subcommittee organized pre-recorded workshops for asynchronous viewing. The online videos were uploaded in shorter modules and available several weeks before the GLEON 2023 Virtual Meeting and then published to the GLEON YouTube channel.
The topics will be the same as the workshops at the in-person GLEON 2022 Meeting at Lake George, NY:
Three simple guidelines for science communication by Ben Kraemer – Our careers and our science depend on our ability to communicate effectively. Communicating effectively helps others to learn from our science, recognize its message, and integrate that message into our collective scientific understanding. However, many scientists are under-trained in how to communicate their science effectively. This workshop will present three simple guidelines that can help us get funding, write well-structured manuscripts, and design effective posters and oral presentations. The workshop will also include “hands-on” activities using examples of your own writing and examples from published literature.
Introduction to real-time lake forecasting: learn, teach, and generate forecasts with Macrosystems EDDIE modules and the NEON Forecasting Challenge by Mary Lofton, Freya Olsson, and Cayelan Carey – The use of near-term, iterative forecasting – i.e., making forecasts of future ecosystem conditions with uncertainty that are constantly being updated as new data become available – is rapidly increasing within the lake research community. However, many scientists may not be familiar with forecasting methods, educational materials, or know how to develop their own forecasts. This workshop will tackle this gap! First, we will provide participants with all materials needed to learn and teach the basics of ecological forecasting with four stand-alone, modular activities that use National Ecological Observatory Network (NEON) lake data and are delivered through R Shiny apps. Our educational modules are part of the Macrosystems EDDIE (Environmental Data-Driven Inquiry & Education) program, and each module comprises three ~1 hr activities which may be completed all at once or individually. We will provide an overview of the modules and helpful tips for teaching them in your classroom. Second, we will introduce you to the NEON Forecasting Challenge for lakes, a national-scale effort of generating real-time forecasts for lakes across the U.S. We will provide you with all of the information and materials so that you can start submitting to the Challenge when it opens in Winter 2023. Come join our effort!
GLEON-NEON Partnership by Kaelin Cawley – This workshop will serve as an introduction to the US National Ecological Observatory Network (NEON) and the data it generates and serves to the scientific community. The session will provide a background on the US NEON program, the types of data that are collected in terrestrial, stream, and lake sites, and tools available to access the data. Workshop participants will get a chance to work with GLEON and NEON scientists to dive into the data, make discoveries to understand complex limnological phenomena, and report back to others on what they found.
How to build a model in R by Robert Ladwig, Hilary Dugan, and Paul Hanson – Want to be a modeler but don’t know where to start? Do you find the word “model” scary? Wish you knew more about how to get started building models in R? If yes to any of the above, this workshop is for you. If you already have some R basics under your belt, we aim to add modeling to your R skillset. Learn what models are and how models are built, calibrated, and used for simplifying data and prediction.
A workshop Q&A session is tentatively scheduled during the virtual meeting live sessions. If you have any questions about workshops, please contact the GSA.
Virtual Meeting Technologies
GLEON used a variety of technologies during the G2023 Virtual Meeting, including GatherTown (for the main meeting platform), Slack (for interactive dialogue), and Zoom (for plenary sessions accessed via GatherTown or Zoom directly).
The GSA communications subcommittee set-up a Technical Support (#technical-support) channel in the GLEON Slack workspace to provide information and help answer questions about virtual meeting technologies. They have also prepared an article and “how to” video about using Slack.
Plenary Speakers

Day 1: Collaborative Research
Day 2: Dominique Roche, Marie Curie Global Fellow, Carleton University (Can) & Université de Neuchâtel (CH). Topic: Open Data Research
Day 3: Panel Discussion on Challenges and Opportunities for Lake Research in Underrepresented Regions
Day 4: Julita Dunalska, University of Gdańsk. Topic: Limnology in Poland and Preview of the GLEON 2023 All Hands’ Meeting in Poland

GLEON 2023 All Hands' Meeting - Poland
2023-06-25 - 2023-06-30 | Ryn, Poland, Plac Wolności 2, Ryn, 11-520, Poland
The in-person GLEON 2023 All Hands’ Meeting will be held in the Masurian Lake District, Ryn, Poland. Hosted by Julita Dunalska, University of Gdańsk.

GLEON 2024 Virtual All Hands’ Meeting
2024-04-08 - 2024-04-12
The GLEON 2024 Virtual All Hands’ Meeting, 8-12 April 2024 was held in GLEON’s GatherTown online meeting space following a similar program and weekly schedule for online meeting activities as before.
For the first time, the GLEON virtual meeting had a ‘local’ host from an underrepresented region. For the GLEON 2024 Meeting, the Tanzania Fisheries Research Institute (TAFIRI) served as local host to help highlight regional research on Lake Tanganyika, the African Great Lakes, and other regional lake research topics.
The hashtag #GLEON2024 was used for social media.
With the success of in-person and virtual meetings in 2021-2023, the GLEON Steering Committee recognized the value of both meeting formats to facilitate the inclusiveness of online meetings and the kinds of interactions at in-person meetings that are key to the network’s collaborative approach to lake science. They made a commitment to continue organizing All Hands’ Meetings, alternating between virtual and in-person meetings every nine months or so.

Limnoseries 2025: Workshop on Data Quality Control
2025-01-28 14:00 - 15:30 UTC
Data QC: Before Starting Everything Should be in Order
Presented by Shajar Regev
An important part of our work is handling data. Gathering data from various sources, consolidating, preparing it for analysis and using it as an input for models. This part of the work is usually tedious. This workshop deals with the tedious work of data quality control (QC). It is a crucial stage since you want to avoid GIGO (garbage in garbage out) situations. And you also want to avoid re-working this tedious part of your research. In this virtual workshop we will go through a few aspects of data quality control with examples using R. Main topics during the workshop are – Invest time in making tools, Text and categorical data, Date – time data, Continues data and Correcting biased data.
If you would like to attend this workshop, or receive the recording, please fill in the following registration form: https://forms.gle/wyiz6sh8DXSA8HAv7
Please sign up for this workshop by Jan 26th.
The zoom link required for the workshop will be sent to those who have registered for the workshop.
We hope to see you there!
GLEON Student Association (GSA) workshop sub-committee

GLEON 2025 Indonesia Meeting
2025-02-17 - 2025-02-21 | Taman Simalem Resort, Lake Toba, North Sumatra, Indonesia, Jl. Raya Merek No.KM. 9, Kodon-Kodon, Kec. Merek, Kabupaten Karo, Sumatera Utara, 22173, Indonesia
The in-person GLEON 2025 All Hands’ Meeting will be held at Taman Simalem Resort, Lake Toba, North Sumatra, Indonesia on 17-21 February 2025 with pre-meetings and early arrivals on 15-16 February and departures on 21-22 February.
The GLEON 2025 Indonesia Meeting will be hosted by BRIN (National Research and Innovation Agency of Indonesia) and Deltares with support from local institutions and communities.

GSA Limnoseries - Wind-induced sediment resuspension in a shallow coastal lagoon
2025-06-25 12:30 - 13:30 UTC
Presented by Daniel Chilton
Shallow lakes and lagoons typically exist in either an ecologically healthy, clear water state, or a degraded turbid water state. Wind-induced sediment resuspension can be important in maintaining a shallow lagoon in a degraded state. This presentation examines how wind-induced sediment resuspension contributes to the degraded state of the Coorong, South Australia, a shallow coastal lagoon of high ecological, social and economic importance.

World Lake Conference
2025-07-21 - 2025-07-25 | BCEC, Cnr Merivale and Glenelg Streets, Brisbane, Queensland
The 20th World Lake Conference in Brisbane (21-25 July 2025) is bringing together some of the world’s leading freshwater experts to share groundbreaking research, innovative restoration techniques, and global perspectives on Lakes as Sentinels for Integrated River Basin Management.
The World Lake Conference will be a great opportunity for GLEONites. We encourage you to attend this important event, make connections with the International Lake Environment Committee Foundation, and be part of global initiatives on lakes (e.g., World Lake Day (27 August) and the UN Resolution on Sustainable Lake Management (22 March 2022)).

United Nations World Lake Day
2025-08-27
The inaugural United Nations World Lake Day is being held on 27th August 2025. Please consider publicizing this event and doing something special to celebrate how lakes are an integral part of our GLEON community and have a critical role for people and biota across the globe.
Also, the Meanjin Brisbane Declaration on World Lake Sustainability, arising from the 20th World Lake Conference, is now available on Zenodo. There is MS Forms access for anyone who wishes to add their name to the Declaration.

GSA Limnoseries: How to Design Better Experiments
2025-09-23 14:00 - 15:30 UTC
Presented by Mridul Thomas and Ravi Ranjan
Experimental designs can make or break an experiment. A good experiment has a clear goal and efficiently uses experimental resources to achieve that goal. In this workshop, we will review what experiments are for, basic and advanced principles of designing experiments, and how to use simulations to evaluate designs before actually doing the experiment. We’ll do a moderate amount of coding in R and so experience with this would be helpful but is not required. We intend to have small-group discussions to help participants develop their own experiments, and encourage participants to think of a specific question they would like to answer with an experiment.

Limnoseries Workshop - Proposal Writing: Strategies for Successful Grant Writing
2025-10-14 11:00 - 13:00 (America/New_York)
Presented by Thomas Shannon
This workshop will focus on developing strategies for writing productive and successful scientific research proposals. We will focus on: 1) finding grants and navigating the diverse international granting landscape, 2) strategies for developing clear, concise, and compelling writing; 3) developing a “skeleton” for your grant application, going over the critical (and sometimes forgotten) components of the document; 4) strategies for integrating persuasive writing and scientific writing; and 5) tips and tricks for getting words on the page. Participants are encouraged to come prepared to write, and there will be opportunities throughout the workshop to practice writing short segments relevant to your own upcoming proposals or grant applications.
*Participants are welcome to join and leave according to their availability.
If you would like to attend this workshop or receive the recording, please fill in the following registration form (registration is now closed).
Please sign up for this workshop by October 10. The Zoom link required for the workshop will be sent to those who have registered.
We hope to see you there!
GLEON Student Association (GSA) workshop sub-committee

GLEON 2025 Virtual Meeting
2025-10-27 - 2025-10-31
The GLEON 2025 Virtual All Hands’ Meeting, 27-31 October 2025 will be held in GLEON’s online Gather meeting space following the usual weekly schedule and format for online All Hands’ Meetings, with working groups at its core (see Program Overview below).
The ‘local’ hosts for the virtual meeting are Ludmila Brighenti, Universidade do Estado de Minas Gerais (UEMG), and Jose Fernandes, Universidade Federal de Minas Gerais (UFMG). This is a unique opportunity to highlight the research at UEMG and UFMG in Brazil and beyond during the GLEON 2025 Virtual Meeting and to expand GLEON presence in South America.
The hashtag #GLEON2025v will be used for social media.
Program Overview
The GLEON 2025v Program Overview provides a daily schedule of activities and locations. The online meeting program includes live sessions over four days with an optional fifth day for ad hoc meetings:

Working Group and ad hoc meetings
Poster Sessions
Daily plenary talks or panel discussions
Informal networking and social activities
Training on working group facilitation, participation, and project champion role
Regional Meetings
Pre-recorded Workshops with live Q&A during the virtual meeting

Meeting Schedule
Registered meeting participants will receive an email before the meeting with connection instructions for the Gather meeting space, a detailed program schedule, and other meeting information. Here is a preliminary schedule of live sessions to help with planning your schedule for the week:

Day 1 – Monday, 27 October 2025: 13:00 – 17:00 UTC (Workshop Q&A: 17:00 – 18:00 UTC)
Day 2 – Tuesday, 28 October 2025: 14:00 – 18:00 UTC (Working Group Training: 13:00 – 14:00 UTC)
Day 3 – Wednesday, 29 October 2025: 12:00 – 16:00 UTC (Regional Meetings: 17:00 – 20:00 UTC)
Day 4 – Thursday, 30 October 2025: 10:00 – 14:00 UTC (Regional Meetings: 08:00 – 10:00 UTC)
Day 5 – Friday, 31 October 2025: 10:00 – 12:00 UTC (unstructured time for ad hoc meetings)

See below for more information about Workshops and Regional Gatherings.
Registration
Registration is now closed.
The registration fee structure allows attendees to select the fee most appropriate to their situation. Registration support or fee waivers are available upon request via the meeting registration form (see below for more information). Registration fee options are as follows:

$100 for those with minimal funding available to cover the registration fee
$250 for those with limited funding available to cover the registration fee
$350 for those with funding available to cover the full registration fee

All participants must complete a registration form in order to receive communications about meeting logistics. There is no fee for those who are from and currently working in the host country and region (Brazil and South America) or attending only workshops or regional gatherings. For questions about registration contact GLEON.
Registration Support
For anyone for whom the registration fee would pose a financial obstacle in attending the GLEON virtual meeting, you can apply to GLEON for support or a fee waiver to cover this cost. There are no geographical or career-stage restrictions on who can apply for support for this meeting, but limited funding is available and emphasis will be placed on creating opportunities for early career scientists and those who demonstrate a need. If you are a student applying for GLEON Registration support or a fee waiver, a poster abstract is required. For all others applying for support, participation in the poster session is encouraged.
Registration support and fee waivers can be requested in the meeting registration form.
Plenary Speakers and Panel Discussions

Day 1 – Plenary Panel Discussion – Brazilian Wetlands – Connecting Science, People, and Nature. Speakers: Francisco A. Rodrigues Barbosa and Adriano Costa Quaresma.
Day 2 – Plenary Panel Discussion – Threats to lakes and reservoirs from global change in South America. Speakers: André Megali Amado; Beatriz Modenutti; Bruno Renaly Souza Figueiredo
Day 3 – Plenary Panel Discussion – How to deal with environmental threats: resilience and management. Speakers: Mariana Meerhoff and Marcelo Manzi Marinho.
Day 4 – Plenary Talk – How to integrate underrepresented groups into science? Speakers: Carolina Joana da Silva and Josué Ribeiro da Silva Nunes.

Learn more about plenary speakers.
Workshops
The GLEON Student Association (GSA) workshop subcommittee is organizing three pre-recorded workshops for asynchronous viewing. The online videos will be uploaded and available a week before the virtual meeting. Check back for more details. Here is a tentative list of topics and presenters:

Spatiotemporal Analyses of Water Quality in River Basins Using Generalized Additive Models (GAM) – Diego Guimarães Florencio Pujoni, Universidade Federal de Minas Gerais
In this workshop, participants will learn how GAMs can be used to capture complex, nonlinear relationships in environmental data. We will discuss how spatiotemporal series can be decomposed into spatial and temporal components at multiple scales, and how variation partitioning can be applied to quantify the relative contributions of these components. As a case study, the workshop will focus on the Doce and Paraopeba rivers, both impacted by mine tailings from dam failures. Topics will include model specification, smoothing techniques, distributional assumptions, and diagnostic tools, emphasizing how GAMs provide a flexible framework for environmental monitoring and hypothesis testing. Hands-on applications in R will demonstrate how these models can be used to extract long-term trends, seasonality, and spatial patterns in water quality variables.
Carbon Footprint of Tropical Reservoirs and climate change – Nathan Barros, Universidade Federal de Juiz de Fora
In this workshop, we will explore how tropical reservoirs interact with environmental and climatic changes. We will review recent scientific advances in understanding these systems, including the concept of anthropogenic greenhouse gas emissions and the processes that remain overlooked in the context of emissions from tropical reservoirs. The workshop will emphasize the pathways of greenhouse gas emissions from reservoirs and compare them with those observed in natural lakes. In addition, we will discuss the carbon footprint of tropical reservoirs and its broader implications for climate change. Finally, we will outline future research directions and management guidelines to mitigate emissions and enhance sustainability.
Smart Enough? Academia and the Imposter Phenomena – Harriet Wilson, University of Stirling
Do you feel like a fraud, even while pursuing the research path you’ve worked so hard to reach? Does it feel awkward when people assume you must be “smart” just because you’re doing a PhD or describe you as an ‘expert’ in your topic? What is imposter syndrome—or is it even a syndrome at all? Should I ditch it, outsmart it, love it, or embrace it? Surprise, surprise: I don’t promise any answers. But in this session I’ll attempt to unpack this buzzword topic, distilling what I’ve learnt from a frankly ridiculous number of self-help books, to figure out what imposter “syndrome” really is, why so many academics are struggling with it, and what, if anything, we can do about it.

There is no fee for the workshops, but those interested in participating should complete a meeting registration form. A workshop Q&A session is tentatively scheduled during the virtual meeting live sessions. If you have any questions about the workshop, please contact the GSA.
Regional Gatherings

The following Regional Gatherings will be held during the week:

Regional meeting for Europe, 29 October 2025, 17:00-18:00 UTC
Regional meeting for South and Central America, 29 October 2025, 18:00-19:00 UTC
Regional meeting for North America, 29 October 2025, 19:00-20:00 UTC
Regional meeting for Asia and Oceania, 30 October 2025, 08:00-09:00 UTC
Regional meeting for Africa, 30 October 2025, 09:00-10:00 UTC

Region Gatherings are free but require registration. For more information, contact Ali Ger or Rafa Marce.
Network Partnership Program
The Committee on inClusive Collaboration (CCC) has revamped the Network Partnership Program (NPP) for virtual meetings. If you are New-to-GLEON and would like to have a mentor during the meeting or are an experienced GLEON member willing to help welcome a newcomer, you can sign up during meeting registration.
Purpose
The purpose of the Network Partnership (NPP) is to help New-to-GLEON participants engage in effective, friendly networking and integration into the community of people and collaboration.
NPP Roles

New-to-GLEON Partner (NP): If you are new to GLEON (first or second meeting), you have the option to choose to sign up as a NP;
GLEON Partner (GP): If this is your 3rd time or more attending a GLEON All Hands’ Meeting. You can be a faculty member, scientist, technician or student that has been to more than two GLEON events and are willing to participate in NPP in a mentoring role.

Suggested Activities and Expectations of Both Roles
The exact terms of the networking partnership will vary depending on the particular needs of your partner. Here are a few suggestions that NPP partners from the past GLEON meetings have honored and worked well:

The GLEON Partner (GP) is expected to be friendly and supportive, to make frequent contact with the New-to-GLEON Partner (NP), introduce him/her to other GLEONites, help identify similar or complementary research interests among GLEON meeting attendees and general membership.
The GP should reach out via email in advance of the meeting and visit the NP’s poster during the Poster Session and helps facilitate interactions with the audience, if need be.
NP and GP share at least one break together during the meeting.

Posters and Abstracts

Poster Session
Book of Abstracts and Poster Session List
The Book of Abstracts includes information about poster locations in the GatherTown meeting space. A list of poster presentation locations is also available. Links to these documents will be activated before the meeting:

GLEON 2025v Book of Abstracts
GLEON 2025v Poster List and Locations

Instructions for Abstract Submission
If you are a student applying for GLEON 2025 Registration support, a poster abstract is required. For all others applying for support, participation in the poster session is encouraged. If you are co-authoring a poster with another student, one submission is sufficient (no need to duplicate submissions).
Abstracts are also required for any attendee that would like to present a poster, including for New Sites, Site Updates, Research Updates and other Cool Things.
Organizers will provide instructions for uploading posters and other media files to a shared folder and how to interact with attendees via the GatherTown platform after you have completed registration. You can present your poster in either portrait or landscape orientation, but we strongly encourage a landscape orientation. We recommend a standard A0 format (1189 x 841 mm). Your poster submission must be in an image format (jpg or png), and the file size should be less than 5MB. Attendees will be limited to one presentation.
If you have questions about abstracts or the poster session, please contact the GSA organizers.
Please use the following example to format the content of your abstract submission:
Lead Author: Kevin C. ROSE1
Lead Author Affiliation: 1Department of Zoology, Miami University, Oxford, Ohio, USA
Other Author Names (one per line):
Marilyn Larsen2
Paul C. Hanson2
Other Author Affiliations (one per line):
2Center for Limnology, University of Wisconsin-Madison, Madison, Wisconsin, USA
Title: Integration of traditional measurements of allochthony with high frequency buoy data from GLEON sites: does temporal scale matter?
Abstract: Write your abstract here. Please keep it under 250 words.

Virtual Meeting Technologies
GLEON will be using a variety of technologies during the Virtual Meeting, including Gather (for the main online meeting platform) and Zoom (for plenary sessions and regional meetings accessed via Gather or Zoom directly).

Gather User Information – tips for new users of GLEON’s virtual meeting platform
Gather Virtual Meeting Tutorial – a video tutorial on how to use GLEON’s virtual meeting platform

Beginner’s Guide to GLEON
The GLEON Student Association developed a Beginner’s Guide to GLEON to help orient those who are new to the network or attending their first meeting.
Code of Conduct
Please refer to the GLEON Meeting Code of Conduct, adopted by the Steering Committee in 2019 and updated in 2024.

Program Committee and Sponsors

GLEON 2025 Virtual Meeting Program Committee

Ludmila Brighenti (Program Co-chair and local host team lead)
Ali Ger (Program Co-chair and GLEON Steering Committee )
Rocio Luz Fernandez (GLEON Committee for inClusive Collaboration)
Lisa Morales, Anna Schmidt, Keerthana Suresh, and Lipa Nkwalale (GLEON Student Association)
Daniel Mercado (GLEON Post-graduate Association and Tech Team Lead)
Lisette de Senerpont Domis (GLEON Steering Committee Co-chair)
Rafa Marcé (GLEON Steering Committee Co-chair)
Lisa Borre (GLEON coordinator at Cary Institute of Ecosystem Studies)

Host Organizations

Universidade do Estado de Minas Gerais (UEMG)
Universidade Federal de Minas Gerais (UFMG)

Supporting Organizations

Cary Institute of Ecosystem Studies
Center for Limnology, University of Wisconsin Madison
National Science Foundation

Limnoseries Lecture November 2025
2025-11-27 14:00 - 15:00 UTC
The next GLEON GSA Limnoseries will take place on November 27 at 15:00 CET / 14:00 UTC (1 hour duration).
Drivers and impacts of long-term change in the birthplace of Limnology
Presented by Bastiaan Ibelings
In the 19th century Alphonse Forel wrote a book with the title Le Léman (Lake Geneva). A book full of observations on this large and deep lake that are still at the basis of what we do today. In his monograph Forel writes something along the lines: I propose to call this study of lakes Limnology, the Oceanography of Lakes. Limnology was born. In this lecture I will honour the legacy of Forel and discuss long-term change in the lake, drivers of change over at least the last 60 years. We will cover the impact of eutrophication followed by re-oligotrophication, resulting in the present-day question of Have we made the lake too clean? Or do blooms of toxic cyanobacteria still pose a risk, that would call for further reductions in phosphorus? We will discuss how re-oligotrophication interacts with the effects of climate change – mainly a lack of full winter overturn causing hypoxia, even in an oligotrophic lake. We will not forget to discuss a third major impact on the functioning and services of Lake Geneva, the massive invasion of the quagga mussel.
If you would like to attend this lecture or receive the recording, please fill in the following registration form (closed).
Please sign up for this lecture by November 20. The Zoom link required for the lecture will be sent to those who have registered.
We hope to see you there!
GLEON Student Association (GSA) workshop sub-committee

Limnoseries Workshop February 2026
2026-02-17 07:00 - 07:30 UTC
The next GLEON GSA Limnoseries will take place on February 17 at 7:00 UTC / 15:00 CST (half hour duration).
Temperature and nutrient sensitivity of denitrification: their interconnected and combined effects in a shallow eutrophic lake
Presented by Muhammad Numan Ali
Nitrogen pollution and GHG emissions, especially in aquatic environments, are critical global concerns. My research investigates nitrate reduction pathways, specifically denitrification. Exploring how cyanobacterial harmful algal blooms (CyanoHABs) and nutrients affect N transformations in freshwater lakes by using stable isotope and metatranscriptomics to uncover their influence on N removal.
If you would like to attend this lecture or receive the recording, please fill in the following registration form (now closed).
Please sign up for this lecture by February 13. The Zoom link required for the lecture will be sent to those who have registered.
We hope to see you there!
GLEON Student Association (GSA) workshop sub-committee

Limnoseries Lecture March 2026
2026-03-11 15:00 - 15:30 UTC
The next GLEON GSA Limnoseries will take place on March 11 at 15:00 UTC / 16:00 CET (30min duration):
The Power of Visual Storytelling for Scientific Communication
Presented by Giovan Peyrotty
Making complex scientific topics accessible to diverse audiences remains a central challenge. Since human understanding is strongly shaped by emotions, communication strategies that foster curiosity and empathy tend to have greater impact. Visual storytelling through audiovisual media helps transform abstract knowledge into meaningful human narratives. This presentation explores how adapted visual formats can engage different publics while maintaining scientific rigor.
If you would like to attend this lecture or receive the recording, please fill in the following registration form (registration closed).
Please sign up for this lecture by March 6. The Zoom link required for the lecture will be sent to those who have registered.
We hope to see you there!
GLEON Student Association (GSA) workshop sub-committee

Limnoseries Lecture April 2026
2026-04-10 15:00 - 15:50 UTC
The next GLEON GSA Limnoseries will take place on April 13 at 15:00 UTC (50min duration):
When Science Becomes a Skillset: Building a Career from Ecology, Theory, and Data
Presented by Diego Pujoni
What may happen when a scientist steps outside academia and begins working with private companies? In this talk I intend to show how scientific training has become a powerful toolkit for solving problems. Skills such as design of experiments, inference, interpretation, and communication are essential in any field. In addition, everywhere, we will have to deal with shorter deadlines, different expectations, and the constant need to balance ethics with real-world constraints without compromising rigor. Ultimately, the talk argues that thinking like a scientist is a competitive advantage wherever decisions depend on evidence. I hope to share nice tips to help young scientists shape their own career, expanding opportunities beyond a single track.
If you would like to attend this lecture or receive the recording, please fill in the registration form.
Please sign up for this lecture by April 10. The Zoom link required for the lecture will be sent to those who have registered.
We hope to see you there!
GLEON Student Association (GSA) workshop sub-committee

GLEON 2026 All Hands' Meeting
2026-08-28 - 2026-09-04 | Ateneu de Banyoles, Banyoles, Spain
The GLEON 2026 All Hands’ Meeting will be held at Lake Banyoles, Spain on 30 August to 4 September 2026 with pre-meetings and early arrivals on 28-30 August 2026. The meeting will be hosted by Universitat de Girona (UdG), Blanes Centre for Advanced Studies (CEAB), and University of Vic – Central University of Catalonia (UVic-UCC) with support from numerous local institutions, companies, and communities.
Ada Pastor, Núria Catalán, and Mireia Bartrons will be the host team for the GLEON 2026 Meeting in Banyoles, Spain. This website will be updated as new information is available, so check back soon.
The hashtag #GLEON2026 will be used for social media.
Attendee Checklist (details provided below):

Complete the meeting registration form by 15 May 2026
Complete the meeting package reservation form by 15 May 2026
If an eligible early career researcher (check the criteria for application and evaluation here), complete the application form for a Freshwater Futures Fellowship by 24 April 2026

All attendees MUST complete and pay for both the meeting registration AND the appropriate meeting package by the deadline. After May 15th, participation in the meeting will be based on availability.
Program Overview
The pre-meeting program includes a Steering Committee retreat (tentative) on Saturday, workshops on Sunday, and the main meeting beginning on Monday and continuing through Friday. This schedule allows more meeting time for working group meetings and excursions during the week.
Plan travel and budget accordingly to arrive at Banyoles, Spain by Friday (to be confirmed for Steering Committee members), Saturday (for students and workshop attendees), or Sunday (if only attending the main meeting) and depart on the following Friday afternoon. See Travel and Meeting Venue below for more information.
An overview of the meeting program is provided below:

Friday, 28 August – Steering Committee arrivals (to be confirmed)
Saturday, 29 August – GLEON Steering Committee retreat (tentative) and early arrivals
Sunday, 30 August – Workshops, facilitation training, and arrival day for all other attendees
Monday, 31 August – Opening plenary and Working Group meetings
Tuesday, 1 September – Working Groups and Poster Session
Wednesday, 2 September – Excursions
Thursday, 3 September – Working Group meetings
Friday, 4 September – Working Group meetings, final report back, and departures in the afternoon

Please note: the meeting will take place through Friday this year to allow for mid-week excursions.
Special groups involved in the meeting:

Spanish stakeholders focusing on challenges in arid and semi-arid regions
Local researchers to share the social and scientific context of Lake Banyoles

The vision for the meeting organizers is to uphold GLEON’s values:

Collaborative, inclusive, and interdisciplinary
Active participation from early-career researchers
Field excursions to nearby places of ecological and/or cultural interest
Affordable meeting package to facilitate Global South attendance

Meeting Registration
Registration is open for the GLEON 2026 Meeting in Spain. Please complete the meeting registration form by 15 May 2026.
In addition to registering for the meeting with GLEON, attendees MUST reserve the appropriate meeting package by completing a separate form provided by the local host team. (See Venue and Accommodations below).
Meeting Registration fee
The GLEON Steering Committee has created a fee structure to allow attendees to select the fee most appropriate to their situation.
The registration fee options are as follows:

$200 (for those with minimal funding available to cover the registration fee)
$350 (for those with limited funding available to cover the registration fee)
$550 (for those with funding available to cover the full registration fee)

There is no added fee for pre-meeting workshops. Meeting participants will also need to reserve and pay for the appropriate meeting package to stay in Banyoles for the meeting (see Venue and Accommodations below).
Travel support is available for early-career researchers. See Freshwater Futures Fellowship below for more information.
For anyone for whom the registration fee creates a barrier to participation, contact the GLEON Steering Committee Co-chairs to inquire about fee waivers.
FAQs: Registration
Q1: Do I need to be a GLEON member to submit registration to attend the All Hands’ Meeting?
A1: No, anyone interested in attending can register. GLEON membership is not a requirement for attending GLEON meetings. However, you will be expected to become a member when you decide to join GLEON collaborative efforts (e.g. projects, working groups, experiments) that require all team members involved to agree to the GLEON Operating Principles & Procedures.
Q2: Do I need to pre-register for this meeting?
A2: There is no pre-registration for this meeting. Attendees should register for the meeting AND reserve the appropriate meeting package using the forms provided.
Q3: Is registration support available for this meeting?
A3: For anyone for whom the registration fee creates a barrier to participation, contact the Steering Committee Co-chairs to inquire about fee waivers.
Venue and Accommodations
Meeting organizers are using a strategy to ensure a genuine GLEON experience:

Purposely avoided luxury resorts to keep costs at a minimum.
Although there will be several options for overnight accommodations, the whole meeting is happening in a small pedestrian downtown area with everything within a five minutes walking distance.
The main meeting venue will be Ateneu de Banyoles.

Overnight accommodations are limited in Banyoles, and our local host team has made arrangements to accommodate our group.
Meeting package reservations
In addition to registering for the meeting, all meeting attendees MUST complete a reservation form by 15 May 2026 to reserve one of the two following options that includes the Meeting Package. One package includes pre-arranged overnight accommodations for attendees who will be traveling to the meeting, and the other is for local attendees, guests, or those who do not require overnight accommodations. Payment in full will be required at the time of your reservation. After the deadline, the meeting package will be based on availability.
The following overnight accommodation options are available for meeting attendees. Links are provided for attendees to learn more about the options. Reservations should be made by completing the form provided by the local host team not directly with the hostel, hotel, or apartment vendor:

Banyoles Hostel
Sprint Hostel
L’Ast Hostel & Hotel
La Carpa Apartments

Meeting package rates with overnight accommodations included are as follows:
Apartment prices updated 23 March 2026
The meeting package with overnight accommodations is priced per person and includes everything apart from the GLEON meeting registration fee, namely: overnight accommodations in your choice of hotel, apartment or hostel on a first-come, first-served basis, on-site participation in all organized activities, daily coffee breaks, lunches, dinners, and social activities.
If you are traveling with your family or accompanying person, please select the La Carpa Apartments single use or l’Ast Hotel*** Double room, single use option and contact us at congressos.fundacioudg@udg.edu for further arrangements.
Meeting package rates without overnight accommodation

The meeting package without overnight accommodations is priced per person and includes: on-site participation in all organized activities, daily coffee breaks, lunches, dinners, and social activities. Overnight accommodations are not included in this rate.
The accompanying person is priced per person and includes lunches and dinners. Accommodations, social activities, and daily coffee breaks are not included.
Participation Support for Early-career Researchers
The host team has secured funding through the esGLEON network to provide full participation support (for registration and travel) to early career researchers. For those who qualify for Freshwater Futures Fellowship support, please complete the meeting registration form and apply for support by 24 April 2026 using this application form. For a list of criteria, click here.

Student Information

For more information about student participation in the GLEON All Hands’ Meeting, including a student checklist, click here.

Posters & Abstracts
During registration, participants are invited to submit an abstract (or more if applicable) to present your research at the GLEON All Hands’ Meeting. For more information and formatting instructions, click here.
The GLEON Student Association (GSA) Poster Committee will prepare a GLEON 2026 Abstract Book and include all abstracts that authors give permission to share during registration. A link will be shared in advance of the meeting.

Network Partnership Program

The purpose of the Network Partnership Program (NPP) is to help New-to-GLEON participants engage in effective, friendly networking and integration into the community of people and collaboration. For more information about the NPP program, click here.

Visa & Letter of Invitation
Visa

Check this website for information about entering the Schengen Area (including Spain) for periods not exceeding 90 days within a 180 day period.
Please consult with the Spanish Consulate in your country/region to find out whether you need a visa to visit Spain.
Plan your air travel sooner rather than later, especially if your itinerary includes a stopover in a country where a transit visa is required. Please consult with your air ticketing agency and the consulates of the countries you will transit through for the latest requirement.

Letter of Invitation
If you need a letter of invitation to support your visa application or approval by your instutions, click here for instructions.
About Banyoles

Best known for its karstic lake – the Estany de Banyoles, the largest natural lake in Catalonia and a landmark in Spanish limnology.
Formed by limestone dissolution and underground springs, it has a unique karstic hydrology, rich biodiversity, and is a hub for research, recreation, and rowing— notably hosting the 1992 Olympic events.
Surrounded by scenic landscapes and medieval heritage, Banyoles blends nature, science, and culture.
Close to Barcelona International airport (100km) and Girona High Speed Train station (15km)

Beginner’s Guide to GLEON
The GLEON Student Association developed a Beginner’s Guide to GLEON to help orient those who are new to the network or attending their first meeting.
Code of Conduct
Please refer to the GLEON Meeting Code of Conduct, adopted by the Steering Committee in 2019 and updated in 2024.

Program Committee and Sponsors

GLEON 2026 Meeting Program Committee

Núria Catalán (co-chair), Ada Pastor, and Mireia Bartrons (local host team)
Jorrit Mesman (co-chair) and Katalin Patonai (GLEON Steering Committee)
Kirsty Forbes and Lisa Morales (GLEON Student Association)
Camille Minaudo and Freya Olsson (GLEON Post-student Association)
Rosie Chapina and Rachel Pilla (Committee for inClusive Collaboration)
Rafa Marcé and Lisette de Senerpont Domis (GLEON Steering Committee co-chairs)
Lisa Borre (GLEON coordinator at Cary Institute of Ecosystem Studies)

Host Organizations
GLEON is grateful to our sponsors and partners for organizing and supporting the All Hands’ Meeting:

Universitat de Girona (UdG)
Blanes Centre for Advanced Studies (CEAB)
University of Vic – Central University of Catalonia (UVic-UCC)

Other Meeting Sponsors and Partners
The GLEON 2026 meeting in Spain was organized with support from numerous local institutions, companies, and communities, including:

ATL: Aigües Ter‑Llobregat
AIL: Asociación Ibérica de Limnología
SIBECOL: Sociedad Ibérica de Ecología
Fundació UdG: Fundació Universitat de Girona: Innovació i Formació
Banyoles Municipality: Ajuntament de Banyoles
Consorci de l’Estany de Banyoles
Museu Darder de Banyoles
esGLEON

GLEON Supporting Organizations

Cary Institute of Ecosystem Studies
Center for Limnology, University of Wisconsin Madison
National Science Foundation
