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There is no substitute for water. Future development will depend on how water can be managed and shared, climate change adaptation can be implemented, and water quality can be improved. DHI has been committed to advancing and sharing knowledge of water environments for over half a century. Working within the entire water cycle, we innovate new ways to use, manage and live with water and protect water-related ecosystems.

Protect and restore marine biodiversity

DHI joined delegates from around the world at COP 16 in Cali, Colombia to address urgent challenges in biodiversity conservation and restoration. Our solutions for monitoring ecosystems and assessing biodiversity targets are designed to support the goals set for safeguarding our planet's biodiversity. By integrating effective biodiversity management into your development plans, we can work together to create a sustainable future for both industry and the environment.

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Integrated hydrological and hydraulic studies enhance water management and resilience to climate change.

A DHI study for Vattenfall measures seabird collision risks and can help speed up offshore wind farm approvals.

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Our world is water, and our expertise spans all water environments, from rivers and reservoirs to oceans and coastlines, to cities, industries and factories, to surface and groundwater. The experience of our people and the power of our technologies are integrated into unique solutions to solve water challenges across key segments and industries.

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At the core of our offerings is MIKE Powered by DHI, an unrivalled water modelling software suite delivering unparalleled accuracy in simulations. Step beyond MIKE to further elevate the efficiency and productivity of your workflows with an array of digital solutions including data portals, cloud-based applications and more.

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RWE partners with DHI and other leading marine scientists to monitor biodiversity using an ecosystem-based approach at its Kaskasi offshore wind farm

As part of a new partnership with leading scientists to improve monitoring of marine life, global energy company RWE has launched the SeaMe (Sustainable ecosystem approach in Monitoring the marine environment) project at its Kaskasi offshore wind farm off the German coast. The objective is to gain a comprehensive understanding of the interactions between offshore wind farms and the ecosystem through the use of a sound scientific approach, together with new AI-based and CO2-minimising monitoring technologies.
The three-year project ‘SeaMe’ uses innovative monitoring technologies – including a drone and an autonomous underwater vehicle, both equipped with AI-based cameras, as well as environmental DNA sampling. Simultaneous integration of all collected data will enable monitoring of the ecosystem within the Kaskasi offshore wind farm with the goal of reducing carbon intensity of monitoring as well as minimising the impact on marine life.
 
‘The SeaMe project is a great example of the increasing focus on biodiversity protection in offshore renewables, and we are proud to support the project with our tools and expertise. Our innovation in methods for quantifying biodiversity metrics can make a tangible difference in global efforts to restore and protect biodiversity,’ states Mikael Kamp Sørensen, Executive Vice President for Energy &amp; Ports in DHI.
 
Innovative and ecosystem-based biodiversity monitoring approachOffshore wind is vital to tackling climate change and reducing greenhouse gas emissions. However, it is equally important to ensure that possible impacts on the environment are minimised and mitigated. It is already mandatory by law in many countries to assess and monitor the state of the environment where offshore wind farms are developed, built and operated. These legal requirements, however, often focus on monitoring individual groups of organisms (e.g. fish, marine mammals, birds), and there has been no holistic approach to data gathering.
 
Thanks to new technologies, the simultaneous collection of data and effective data management, the SeaMe project will enable RWE to consider the ecosystem as a whole. One aim of the SeaMe project is to also monitor key components of the marine ecosystems that are usually left out of conventional monitoring programmes, such as small phytoplankton (microscopic algae) and zooplankton (e.g. krill), which play a vital role in feeding larger animals. In addition, a series of physical parameters such as temperature, salinity and oxygen will be measured to explain any possible changes in the distribution and abundance of species.
 
DHI will contribute to the SeaMe project as data coordinators, data host and data analysers. DHI will develop and host a data portal for RWE, where all the biodiversity data harvested from the main project will be stored and made available to all involved parties. The data portal will enable visualisation of all the different data streams and support scientifically-based communication and dissemination of the collected ecological data.
 
Furthermore, DHI will process the collected data with their EBM BioQ suite, which is a collection of analytical tools for ecosystem-based management. For example, DHI’s Biodiversity State Indicator (BSI) will be applied to assess the state of biodiversity at the site.
 
Deployment of more environmentally friendly monitoring techniquesThe joint project will investigate how innovative techniques can make monitoring less invasive and more sustainable compared to the current monitoring techniques. Whereas planes and ships are routinely used to monitor birds and mammals, SeaMe targets to replace these methods with a drone equipped with an AI-based camera system. SeaMe will also collect water samples and analyse them for environmental DNA. AI-based fish video monitoring will be performed using an autonomous underwater vehicle. Both methods will replace the traditional means of sampling the fish using nets, making the entire process less invasive. DHI will act as advisors for the data providers, providing advice on sampling strategy for eDNA and other novel monitoring technologies. 
 
Leading marine scientists to contribute their know-howRWE’s SeaMe project will be carried out in collaboration with prominent partners including the Helmholtz Institute for Functional Marine Biodiversity at the University of Oldenburg (HIFMB), the Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research (AWI), BioConsult SH, the German Research Centre for Artificial Intelligence (DFKI) and DHI. 
 
All tests will take place at RWE’s Kaskasi offshore wind farm, which is located 35 kilometres off the coast of the German island of Heligoland. With a total installed capacity of 342 megawatts, the wind farm is capable of supplying the equivalent of approximately 400,000 German homes with green electricity. 
 
For further information, please contact Jesper Goodley Dannisøe (jda@dhigroup.com) for portal questions and Lars O. Mortensen (lamo@dhigroup.com) for BioQ questions.

DHI will join delegates from around the world at COP 16 in Cali, Colombia this October to address urgent challenges in biodiversity conservation and restoration.&nbsp;
COP 16 will bring together governments, observer organisations, indigenous communities, businesses, civil society, academia and the general public under the theme ‘Peace with nature’ and with participants from over 190 countries. This year's discussions will emphasise innovative technologies and analytical approaches that are critical for developing effective solutions to protect and restore biodiversity.
How DHI works with marine biodiversity&nbsp;
Marine biodiversity is a critical element in maintaining ecosystem functionality, which in turn supports industries and livelihoods globally. Yet, the lack of standardised biodiversity metrics presents a challenge in monitoring, assessing and mitigating biodiversity loss. Clients are increasingly challenged by the lack of standards and proven methods for reporting on the biodiversity impact of their business activities across industries and sectors.&nbsp;
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DHI has developed comprehensive, science-based methodologies that safeguard biodiversity and promote sustainable ecosystem management on a global scale. These methodologies support biodiversity initiatives through integrated solutions for monitoring, analysing, reporting, enhancing and restoring marine ecosystems.
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Collaborating with industries such as shipping, ports and offshore wind, DHI provides structured guidance to address biodiversity concerns while ensuring regulatory compliance.&nbsp;
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Go to LinkedIn to stay up-to-date with DHI's activities at COP 16.
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Learn more about DHI's solutions in biodiversity conservation and management:&nbsp;DHI Solution - Protect and restore marine biodiversity

Restoring the critically endangered Hillman Marsh ecosystem using nature-based solutions

DHI has partnered with SJL Engineering Inc. and the Essex Region Conservation Authority to restore the critically endangered Hillman Marsh ecosystem on Lake Erie, leveraging MIKE Powered by DHI technology to design nature-based solutions. This initiative is supported by grant funding from Environment and Climate Change Canada (ECCC) under the Great Lakes Freshwater Ecosystem Initiative (GLFEI).
Covering nearly 1,000 acres, Hillman Marsh is a designated Provincially Significant Wetland. Historically, the marsh was a thriving ecological system providing critical habitat to aquatic endangered species and numerous migratory bird populations, while providing ecosystem services such as water quality benefits. However, cumulative stresses from human development and climate change, particularly rising lake levels, have severely threatened its ecological value.
 
In addition to the significant loss of habitat and ecosystem services once offered by the Hillman Marsh, the propagation of lake waves through the newly breached barrier system and into the marsh presents a significant risk to the residents and agricultural lands within the interior of the Pelee Peninsula on Lake Erie, in Ontario Canada. The marsh is surrounded by a perimeter of dykes, which were constructed from native local materials including clay and peat. The interior lands are low-lying, with much of the Pelee Peninsula featuring elevations well below the 100-year flood level. There is potential for widespread flooding of more than 2,000 hectares and direct economic damages on the order $50,000,000 should the dyke suffer a breach based on the historical 100-year flood level.  
Reinstating 1,000 acres of wetland providing ecological, habitat, carbon sequestration and water quality services
 
The overall objective of the Hillman Marsh and Barrier Beach Restoration Project is to create a restored marsh environment with protection from lake waves and storm surge achieved through the design and implementation of a nature-based, dynamically stable, engineered artificial barrier feature. The restored marsh will serve to reinstate approximately 1,000 acres of wetland providing ecological, habitat, carbon sequestration and water quality services. The restored barrier system will ensure that these services are maintained in the future with increased resilience to the sheltered marsh and surrounding region against climate-related impacts on coastal processes.
 
To achieve this, the barrier is to be designed in a hybrid manner, combining several approaches to reduce wetland exposure, increase resilience and provide shoreline stability including traditional engineering techniques (e.g. breakwaters, headlands, reinforced dykes) with nature-based or green infrastructure (e.g. artificial reefs, sediment bypassing, beach nourishment, boulder clusters, dune restoration, barrier re-vegetation, etc.).
 
MIKE models key in designing nature-based solutions for effective restoration
 
In early September, DHI’s team in Canada commenced this multi-year project with a comprehensive field campaign, deploying wave monitoring, streamflow and water level monitoring instrumentation within the marsh. 
‘Our team will use the MIKE 21 FM Spectral Waves, Hydrodynamics, MIKE 3 Mud Transport and MIKE 3 Wave FM models to assess the marsh baseline and to develop nature-based hybrid design solutions to protect and restore the marsh habitat’, says Danker Kolijn, Project Director Americas-Pacific, DHI. 
He adds, ‘Our numerical models will integrate vegetation dynamics and morphological processes to understand the response of the system to future climate stressors and the proposed solutions. The final concept will be tested and refined in the physical model basin at the Federal Ocean, Coastal and River Engineering Research Centre in Ottawa, Canada. Once the design has been refined, plans will be prepared for the implementation, construction, monitoring and long-term adaptive management of the project.’
 
Watch this video to know more about the Hillman Marsh restoration project and contact Danker Kolijn for more information.

WMO report highlights growing shortfalls and stress in global water resources

The year 2023 marked the driest year for global rivers in over three decades, according to a new report coordinated by the World Meteorological Organization (WMO), which signalled critical changes in water availability in an era of growing demand.
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The last five consecutive years have recorded widespread below-normal conditions for river flows, with reservoir inflows following a similar pattern. This reduces the amount of water available for communities, agriculture and ecosystems, further stressing global water supplies, according to the State of Global Water Resources report.
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DHI has contributed to the report with data from the DHI Global Hydrological Model, which supports more precise decision-making and modelling with easy access to a global dataset of hydrological variables and detailed physical characteristics of landscapes using high-resolution satellite data. The Earth Observation data is of high quality and available for the whole planet, which is crucial for understanding the hydrology of ungauged catchments and providing information in locations where data is otherwise scarce. The data from the DHI Global Hydrological Model contributed to the global mapping of water resources in the report.
Glaciers suffered the largest mass loss ever registered in the last five decades. 2023 is the second consecutive year in which all regions in the world with glaciers reported ice loss. With 2023 being the hottest year on record, elevated temperatures and widespread dry conditions contributed to prolonged droughts. But there were also a significant number of floods around the world. The extreme hydrological events were influenced by naturally occurring climate conditions – the transition from La Niña to El Niño in mid-2023 – as well as human induced climate change.
‘Water is the canary in the coalmine of climate change. We receive distress signals in the form of increasingly extreme rainfall, floods and droughts which wreak a heavy toll on lives, ecosystems and economies. Melting ice and glaciers threaten long-term water security for many millions of people. And yet we are not taking the necessary urgent action’, said WMO Secretary-General Celeste Saulo.
‘As a result of rising temperatures, the hydrological cycle has accelerated. It has also become more erratic and unpredictable, and we are facing growing problems of either too much or too little water. A warmer atmosphere holds more moisture which is conducive to heavy rainfall. More rapid evaporation and drying of soils worsen drought conditions’, she said.
‘And yet, far too little is known about the true state of the world’s freshwater resources. We cannot manage what we do not measure. This report seeks to contribute to improved monitoring, data-sharing, cross-border collaboration and assessments', said Celeste Saulo. ‘This is urgently needed.’
Currently, 3.6 billion people face inadequate access to water at least a month per year and this is expected to increase to more than 5 billion by 2050, according to UN Water, and the world is far of track Sustainable Development Goal 6 on water and sanitation.
Learn more here: WMO State of Global Water Resources report 2023
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More about the WMO reportThe State of Global Water Resources report series offers a comprehensive and consistent overview of water resources worldwide. It is based on input from dozens of National Meteorological and Hydrological Services and other organisations and experts, including DHI. It seeks to inform decision makers in water-sensitive sectors and disaster risk reduction professionals. It complements WMO’s flagship State of the Global Climate series.&nbsp;
The State of the Global Water Resources report is now in its third year and is the most comprehensive to date, with new information on lake and reservoir volumes, soil moisture data and more details on glaciers and snow water equivalent. The report seeks to create an extensive global dataset of hydrological variables, which includes observed and modelled data from a wide array of sources. It aligns with the focus of the global Early Warnings for All initiative on improving data quality and access for water-related hazard monitoring and forecasting and providing early warning systems for all by 2027.
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About DHI’s Global Hydrological Model
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A Global Hydrological Model is a tool for looking at hydrology from the perspective of the Earth as one interconnected system, rather than disconnected and isolated parts. They are basically used for better understanding, predicting and managing water resources on regional, national and global scales. DHI-GHM is unique in the way it handles areas with limited or no local observations. Because it directly accounts for the detailed physical characteristics of landscapes using satellite data, the results from these data-scarce areas are highly reliable and useful in situations where monitoring is a challenge.

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