Monitoring

Getting results
Methods for the best results

Finding proof

Monitoring is critical for nature enhancement projects in offshore wind farms (OWFs). The monitoring process is a delicate balance of time and space, adhering to safety measures, observing regulations, and navigating turbulent waters. As nature enhancement in OWFs is still a relatively new field of study, data from projects can support a proof of concept aimed to scale up measures for nature restoration and enhancement.

Without monitoring, we would have no way to know the efficacy of nature enhancement measures. A learning-by-doing approach can help research to keep up with the speed of energy transition, enabling both scientific and practical results on the topic as well as adaptable management. Monitoring results can also support stakeholder engagement and public support.

What's your approach?

Monitoring plans

Every nature enhancement project should begin with a detailed monitoring plan that efficiently answers your research question(s). A monitoring plan functions as the team’s practical tool for gathering data at every step, and should be tailor-made to the project’s goals—and budget.

Monitoring plans should include monitoring methods, timing (baseline and repetitions), and control sites or samples when possible. Along with explanations of techniques and procedures, a plan should describe measured parameters. Data analysis, reporting, and dissemination should also be covered.

Monitoring methods should be chosen based on highest value for effort, using cost-effective techniques that will yield the right results. This is where real innovation happens! Making use of modern techniques can help to form groundbreaking concepts, and speed up the gathering of proof for nature enhancement measures. It’s science in action.

Critical considerations

Risky business

Monitoring involves many moving parts – and many risks. This includes the risk of technological failures, human error, safety issues, bureaucratic hiccups, and of course, timing mishaps when Mother Nature has other plans in mind. In the chart below, there are various risks associated with each monitoring method.

Because of the risks involved, certain monitoring techniques are prohibited in offshore wind farms. For example, in Dutch waters, diving in offshore wind farms is not allowed. When making a monitoring plan, be sure to stay in contact with the wind farm operator to evaluate options. Every monitoring mission will also require a Risk Assessment Methods Statement (RAMS) to determine, avoid, and mitigate any risks.

Get inspired for your next project

Monitoring ideas

ROV and AUV with video

Remotely Operated Vehicles and Autonomous Underwater Vehicle can be used in areas where diving is prohibited.

  • cover High
  • cover Video images
  • cover Ease of use: Medium
  • cover Pilot, crane optional, space for electronics
  • cover Invasiveness: low
  • cover Alternatives: dropcam, eDNA

eDNA sampling

Environmental DNA analysis uses metabarcoding to detect species in water samples.

  • cover Low
  • cover DNA bar codes, absence/presence
  • cover Ease of use: easy
  • cover Water sampling and filtration materials, lab analysis
  • cover Invasiveness: low
  • cover Alternatives: ROV, AUV, dropcam, grab and scrape

Sonar

Sonar (multi-beam, side scan) maps the seafloor, revealing bathymetry and potential reef locations and sizes.

  • cover Low
  • cover Seabed characteristics
  • cover Ease of use: easy
  • cover Sonar on vessel
  • cover Invasiveness: low
  • cover Alternatives: Video images

Passive acoustics

Acoustic tags on animals and seafloor receivers track local movement underwater.

  • cover Medium
  • cover Local movement over time
  • cover Ease of use: hard
  • cover Accoustic tags on or in animals, receivers on seafloor
  • cover Invasiveness: medium
  • cover Alternatives: Video images
Measuring equipment on metal frame seen from above, being lowered down into water

Abiotics

Abiotic factors like salinity, temperature, flow, and pH are measured to indicate quality.

  • cover Low
  • cover Envrionmental condition values
  • cover Ease of use: medium
  • cover Specific measurement equipment and deployment
  • cover Invasiveness: low
  • cover Alternatives: Water samples

Grab and scrape

Grab and scrape samples are excellent for detailed species analysis and identification.

  • cover Medium
  • cover Biotic samples
  • cover Ease of use: medium
  • cover Grabs, operator (diver or ROV)
  • cover Invasiveness: high
  • cover Alternatives: eDNA

Drop down video (baited/unbaited)

Baited and unbaited dropcams provide underwater views, but can’t move on demand.

  • cover Low
  • cover Underwater images
  • cover Ease of use: easy
  • cover Video camera and ropes, crane optional
  • cover Invasiveness: low
  • cover Alternatives: ROV/AUV

Catch samples / fitness

Catch samples and fitness studies reveal individual health traits and population makeup.

  • cover Medium
  • cover Live samples, species fitness
  • cover Ease of use: hard
  • cover catching equipment, expert analyses
  • cover Invasiveness: high
  • cover Alternatives: Visual inspections

Divers

Divers add a human touch to monitoring, offering flexibility and adaptability when needed.

  • cover High
  • cover Visual inspection, samples
  • cover Ease of use: Hard
  • cover Professional divers, decompression tank
  • cover Invasiveness: medium
  • cover Alternatives: ROV/AUV, dropcam
Monitoring projects

Monitoring projects