Modular Sealife System
What is MOSES?
The Modular Sealife System (MOSES) is a modular system to build artificial reefs. When artificial MOSES-reefs are installed in oceans or waterways, they serve as habitat for aquatic animals to find food, shelter and a safe space to reproduce. MOSES-reefs can also be installed as functional objects, such as eco-anchors for floating solar panels or coastal erosion protection units. By using blast furnace cement the CO2-emissions are reduced with 50% compared to traditional concrete (Portland cement).
Have the effects of MOSES been tested?
Artificial reefs promote population growth and ecosystem restoration. Wageningen University & Research is currently monitoring the effects of our reefs on the local ecosystem in Haringvliet, IJmuiden and in Shimoni, Kenya. With eDNA monitoring techniques they have shown an increase of biomass and species around the MOSES-reefs!
What species does MOSES attract?
Each reef unit can be modified to create various microhabitats. Local species such as crabs, lobsters, mussels, oysters, and corals can find shelter within MOSES-reefs in different life cycle stages. The outside surface has a rough texture, which functions as hard substrate and is ideal for various larvae. In one of our projects in Panama the researchers noticed natural recruitment of several coral species!
What about the stability at sea?
To test the stability of MOSES-reefs, various storm conditions were simulated at the independent institute for applied research in the field of water and subsurface Deltares. With the help of hydraulic engineers we have identified the minimum necessary weight of the reefs at different depths and wave heights.
Sheet Pile Eco-Territorial Reinforcement
What is SPECTER?
SPECTER is a multi-layered hanging case that can be installed onto sheet piles. Within the SPECTER cases native aquatic plants are placed. When these plants have grown they have a positive effect on the water quality and the surrounding ecosystem. When installed along canals, fish can find food, shelter and a safe space to reproduce along their migration route. With SPECTER it is possible to bring back nature in places, where this hasn't been possible before.
What species does SPECTER attract?
Above water the plants attract birds, bees and other insects. Additionally the vegetation creates a pleasant street view with a positive environmental impact.
Just below the water surface juvenile fish, such as the three-spined stickleback and elver have the option to find food and shelter within the SPECTER cases.
What is a Reefpool?
Reefpools are structural performing armor units that can be used for dike reinforcements while promoting population growth of marine organisms. By mimicking natural rock pools, Reefpools function as intertidal habitats along dikes or wave breakers. Reefpools will fill up with fresh water and nutrients during high tide (2 times a day), which attracts all sorts of organisms. 80% of Reefpools consists out of natural materials. The additional 20% is bio-concrete (blast furnace cement), which is produced with half of the CO2-emissions of traditional concrete. The shells that are added in the Reefpools create a bioreceptive hard substrate for organisms to settle on. Additionally these shells contain a high amount of calcium carbonate, which is used by oysters and mussles to build their own shells.
What species does the Reefpool attract?
The Reefpool is designed to form a place of refuge for crustaceans, such as crabs, lobsters and shrimps. Some of these crustaceans will attract birds which feed on these animals. In addition, the bio-receptive surface will attract mollusks such as oysters and mussels and various types of seaweeds and algae can grow onto it. The 2021-2023 pilot project at the Lauwersmeerdijk in the Netherlands will give insights into what species will adopt the tidal pool as their habitat.