Approaches to monitoring offshore bivalve aquaculture at Sagres, Portugal

Transcription

1 Approaches to monitoring offshore bivalve aquaculture at Sagres, Portugal John D. Icely* Bruno D.D. Fragoso* *Sagremarisco-Viveiros de Marisco Lda Apartado Vila do Bispo Portugal

2 Introduction Offshore bivalve aquaculture at Sagres Why monitoring? Some approaches at Sagres An example Acknowledgements References

3 Location of offshore aquaculture at Sagres [1]

4 Sagres aquaculture

5 Why monitoring?

6 Regulations Why Monitoring? EU Shellfish Directive (DIRECTIVE 2006/113/EC) Portuguese Legislation Aquaculture Management Prediction of spatfall events Optimization of yield production HAB s

7 Monitoring requirements Portuguese Agency of the Environment Temperature Salinity ph Oxygen Weekly Chlorophyll Sediment - Granulometry - Organic matter content Monthly Yearly

8 Approaches: monitoring buoy Buoy sensors Temperature Salinity Turbidity Radiometry Wave height Current speed Land-based station Computer receives data from buoy (WiFi) and uploads it automaticaly into an online database.

9 Remote sensing [2] From validation to satellite products

10 ρw(560)

11 AQUAculture USEr driven operational Remote Sensing information services WISP-3 (Water Insight Spectrometer) Finisterra S.A. Offshore Aquaculture 0,09 R0- [-] 0,08 0,07 0,06 0,05 CHL [μg/l] 11,2 TSM [mg/l] 5,8 CPC [μg/l] 33,7 CHL/CPC 0,3 Kd [1/m] 1,8 0,04 0,03 0,02 0, Hand held instrument, providing instant reading of environmental variables from ocean colour; Correction for site-specific algorithms ; For daily use in aquaculture management

12 Approaches: Models [3] Three-dimensional water modelling system developed by MARETEC (Marine and Environmental Technology Research Center) at Instituto Superior Técnico (IST), U. of Lisbon., Portugal An operational system to provide the infrastructure to support marine decision making with a robust sources of hydrodynamic, ecological and water quality data within timescales that are useful for decision making. Forecasting the evolution of a toxic algal bloom: the images show the modelling of an Ostreopsis ovata bloom off the Algarve coast of Portugal. This benthic dinoflagellate produces palytoxins.

13 Models [4] FARM Farm Aquaculture Resource Management Farm layout Farm structures -Bottom Culture -Longlines -Trestles - Rafts Farm drivers in situ data Temperature (ºC) Salinity (-) Chlorophyll (ug/m3) POM (mg/l) TPM (mg/l) Oxygen (mg/l DIN (u mol L) Wind Speed(m/s) Current Speed (m/s) FARM Model - developed to simulate potential harvest, key financial data, and water quality impacts at the farm-scale

14 An example: in situ data set Sagres [5] μg/l 7 um/l 10,0 9,0 8,0 7,0 Ammonia Nitrates Nitrites Phosphates Silicates Cells/ml 3500,0 3000,0 2500,0 Flagellates Diatoms Dinoflagellates Algal I (HPLC) Other ,0 5,0 2000,0 3 4,0 3,0 2,0 1,0 0,0 A1 A3 B1 B2 B3 C1 C2 C3 A1 A2 A3 B1 B2 B3 C1 C2 C ,0 1000,0 500,0 0,0 A1 A3 B1 B2 B3 C1 C2 C3 A1 A2 A3 B1 B2 B3 C1 C2 C th Annual Meeting of the NSA in Jacksonville, FL March 29-April 2, 2014

15 106th Annual Meeting of the NSA in Jacksonville, FL March 29-April 2, 2014 Microscopy HPLC um Guinardia spp. 25 um Guinardia spp. Chl c3 Chllide a Chaetoceros spp. Chl c2 Fuco 25 um 19 Hex-fuco Prasino Viola Chaetoceros spp. Diadino Allox Diato 25 um Crytophyta Chaetoceros spp. 10 um Chl b 25 um Chl a + DVChl a Detonula pumila Flagellate α-car + β-car 10 um 25 um

16 An example: remote sensing data for Sagres [5] MERIS images of Algal Pigment 1

17 Acknowledgements : European Space Agency Technical Assistance for the Validation of MERIS Marine Products at Portuguese and Oceanic and Coastal Sites Contract number (21464/708/I-OL - CALL ID ) 2013 Present : EU 7th Framework Programme Project AQUAculture USEr driven operational Remote Sensing information services. (AQUA-USERS). Finisterra Lda for allowing unlimited access to their farm.

18 References [1] Goela, P.C., Icely, J., Cristina, S., Newton, A., Moore, G., Cordeiro, C., Specific absorption coefficient of phytoplankton off the Southwest coast of the Iberian Peninsula: A contribution to algorithm development for ocean colour remote sensing. Continental Shelf Research, v. 52, pp DOI: /j.csr [2] Cristina, S., Moore, G., Goela, P.C., Icely, J., Newton, A., In situ validation of MERIS marine reflectance off the southwest Iberian Peninsula: assessment of vicarious adjustment and corrections for near-land adjacency. International Journal of Remote Sensing, 35, DOI: / [3] Mateus, M., Riflet, G., Chambel, P., Fernandes, L., Juliano, M., Campuzano, F., de Pablo, H., Neves, R., An operational model for the West Iberian coast: products and services. Ocean Science 9, , [4] Ferreira, J.G., Sequeira, A., Hawkin, A.J.S., Newton, A., Nickell, J.D., Pastres, R., Forte, J., Bodoy, A., Bricker, S.B Analysis of coastal and offshore aquaculture: Application of the FARM model to multiple systems and shellfish species;. Aquaculture, 289, doi: /j.aquaculture [5] Icely, J.D., Moore, G.F., Danchenko, S.A., Goela, P.C., Cristina, S.V., Zacarias, M., Newton, A., Contribution of remote sensing products to the management of offshore aquaculture at Sagres, SW Portugal. Ed. H. Ouwehand Proceedings of ESA Sentinel-3 OLCI/SLSTR and MERIS/(A)ATSR Workshop European Space Agency 6pp. Thank you for your attention