Construction methods, tools and equipment in freshwater, brackish water, and Marine environment

This presentation is personally crafted to share insights from my studies and field experience in Fisheries Science. As a BS Fisheries student, I am passionate about sharing what I’ve learned. Although I’m not yet a professional, I’ve relied on credible sources to ensure the information is accurate and beneficial. I hope you find this PPT helpful and informative, and it’s free for you to use and learn from.

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1. Construction Methods, Tools, and Equipment for Freshwater, Brackish Water, and Marine Environments Presented by: Moran E., & Gesta K. BS Fisheries – 4B

2. Aquaculture construction varies based on the water environment—freshwater (rivers, lakes, ponds), brackish water (estuaries, mangroves, lagoons), and marine (open sea, coastal waters)—with different techniques and tools used to build ponds, cages, raceways, pens, and hatcheries while ensuring sustainability and efficiency.

3. Construction Methods Freshwater Aquaculture Construction Common systems: Earthen ponds, concrete tanks, raceways, floating cages

4. Construction Methods Pond Construction – Excavation using backhoes or bulldozers to create levees and water-retaining structures.

Lining Methods – Clay, HDPE (High-Density Polyethylene) liners, or geotextiles to prevent seepage.

5. Construction Methods Water Inlet and Drainage Systems – PVC, HDPE, or concrete pipes with gates for efficient water management.

Aeration Systems – Paddlewheel aerators, diffusers, or blowers installed to maintain dissolved oxygen levels.

6. Construction Methods Raceway Construction – Reinforced concrete channels with water circulation powered by gravity or pumps.

Floating Cage Installation – Anchored using mooring systems with galvanized steel or HDPE frames.

7. Construction Methods Brackish Water Aquaculture Construction Common systems: Tidal ponds, pens, floating cages, shrimp farms

8. Construction Methods Dike and Canal Construction – Excavators and bulldozers build embankments with soil compaction to manage water flow.

Salinity Control Systems – Gates and sluice systems regulate freshwater and seawater mixing.

9. Construction Methods Mangrove-Friendly Design – Elevated platforms and minimal land clearing to prevent ecosystem disruption.

Net Pens and Enclosures – Fixed with bamboo, PVC pipes, or HDPE frames in tidal areas.

10. Construction Methods Mangrove-Friendly Design – Elevated platforms and minimal land clearing to prevent ecosystem disruption.

Net Pens and Enclosures – Fixed with bamboo, PVC pipes, or HDPE frames in tidal areas. Artificial Reef Structures – Used to enhance fish production and biodiversity.

11. Construction Methods Marine Water Aquaculture Construction Common systems: Offshore cages, longline systems, seaweed and shellfish farms

12. Construction Methods Offshore Cage Anchoring – Heavy-duty mooring systems with concrete blocks or screw anchors.

Submersible Cage Technology – Used in rough seas to avoid storm damage.

Longline Systems for Seaweed and Shellfish – Buoys, ropes, and anchors deployed for suspended culture.

13. Construction Methods Wave Breakers and Artificial Reefs – Reduce wave energy and enhance habitat for marine species.

Hatchery and Nursery Construction – Seawater intake systems, biofiltration , and temperature control systems for seed production.

14. Tools and EquipmentS for Aquaculture Construction

15. Excavators and Bulldozers – Used for pond and raceway construction.

Water Pumps – Diesel or electric pumps for water exchange and recirculation.

Aerators (Paddlewheel, Diffuser, Blowers) – Maintain dissolved oxygen in culture systems

16. Water Quality Monitoring Kits – Test pH, dissolved oxygen (DO), ammonia, and temperature.

Harvesting Nets and Grading Baskets – Used for fish and shrimp collection.

17. Soil Compactors and Levelers – Strengthen embankments for shrimp ponds.

Tidal Gates and Sluice Valves – Control water inflow and salinity levels.

18. Mangrove-Friendly Cage Materials – Bamboo, HDPE, or floating rafts for sustainable systems.

Solar-Powered Aerators and Pumps – Used in remote coastal areas.

19. Mooring and Anchoring Systems – Heavy-duty chains, ropes, and concrete anchors for offshore cages.

Submersible Cage Deployment ROVs – Used in deep-sea aquaculture.

Buoys and Floats – Keep seaweed and shellfish culture structures suspended.

20. SUMMARY Aquaculture construction requires specialized methods, tools, and equipment suited to different water environments. Freshwater systems focus on pond excavation and water management, brackish water systems need salinity control and sustainable structures, and marine systems rely on robust, storm-resistant cages and mooring solutions. Efficient infrastructure ensures productivity, sustainability, and resilience against environmental challenges.

21. Thank you for your attention! Have a good day🙂 "We are literally eating the oceans alive and there are simply not enough fish to continue to feed an ever-expanding population of humanity" —Paul Watson