1 / 29

Observing Global Ocean Biology. Is new technology the solution?

This article explores the feasibility of using new technologies to observe and monitor ocean biology. It discusses the motivation for biological observation systems, existing and developing systems and sensors, and the potential for a truly integrated global observation system. The article also highlights the importance of ocean biological systems and the challenges they face, such as overfishing, trophic cascades, endangered marine animals, and threats to coral reefs. It concludes with the need for improved observation networks to achieve sustainability and resilience on a global scale.

scottf
Download Presentation

Observing Global Ocean Biology. Is new technology the solution?

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Observing Global Ocean Biology. Is new technology the solution? John Gunn* Australian Antarctic Division *On behalf of the SCOR Panel on New Technologies for Observing Marine Life

  2. Outline • The Motivation for Biological Observation Systems • The Challenge • Whistlestop tour of Existing/Developing Systems and Sensors • Biogeochemistry • Microbe – Zooplankton • Benthic Systems • High Trophic Levels • Feasibility of a truly Integrated GOOS 2010-20?

  3. Inputs/Acknowledgements • SCOR Panel meeting, Mestre 16-18 Sept 09 : reviewed Current Status of Biological Obs: • The Bio in Biogeochemistry • Microbes to Plankton • Benthic Ecosystems • Higher Trophic Level Pelagic - migratory species. (Block, Costa, Snelgrove, Daly, Dickson, Palumbi, Urban, O’Dor, Rogers, Fennel, Chavez, Gilbert, Rintoul, Biuw, Cury) • Ocean Obs ‘09 white papers • Ocean Sensors ’08 papers.

  4. Ocean Sensors ‘08 (http://www.ocean-sci-discuss.net/special_issue22.html) • Sensors for physical fluxes at the sea surface: energy, heat, water, salt. • Molecular biology techniques and applications for ocean sensing. • Optical tools for ocean monitoring and research. • What are "ecogenomic sensors?" – a review and thoughts for the future. • Sensors and instruments for oceanic dissolved carbon measurements. • Sensors for observing ecosystem status. • Observing using sound and light – a short review of underwater acoustic and video-based methods. • Detecting marine hazardous substances and organisms: sensors for pollutants, toxins, and pathogens. • Assessment of sensor performance. • Electrochemical techniques and sensors for ocean research.

  5. Ocean Biological Systems • Play critical roles in earth’s carbon cycle • Fundamental for the food security, livelihoods and health of >1 billion people globally.

  6. The Resilience of Ocean Ecosystems is being severely tested today, before the most serious impacts of Climate Change begin to be felt . • >50% of fish stocks overfished , IUU fishing still rampant • Trophic cascades are leading to the “rise of slime” • Growing numbers of endangered marine animals (fishes, sharks, birds, marine mammals, turtles) • Coral Reefs - indeed many coastal ecosystems - are under serious threat from various sources. • Growth in Dead zones from hypoxia/anoxia. • Exponential Growth in HABs

  7. Assessment of Assessments “The IPCC of Ocean Status” • Models - for process understanding, ocean health/risk assessment, and “prediction” - are advancing quickly and are very likely to provide key inputs into the AoA . • In many cases they are racing ahead of the supply of data. • To achieve the goals of the AoA – sustainability and building resilience on a global scale - we need vastly improved observation systems/networks/information bases.

  8. The Universal Challenge Global Ocean Observation. (Physics –Species – Ecosystems) Global Focus – Selected Variables - Expendable – Cheap V Locally Focussed – Comprehensive - Redployable and often ……not so Cheap!

  9. Biogeochemistry Sensors : T, Conductivity, O2, Chl fluorescence (proxy for chl; backscatter (proxy for POM), Ed, Lu, PAR, NO3-, pCO2 On the horizon: pH, pN2 Platforms: • Satellites • Gliders (Slocum gliders and Seagliders), • Floats (Lagrangian and Argo), • Biologging (e.g. seals, sharks etc) • Ships of Opportunity • Array of moorings and sea floor observatories “Mature”, ready for global long term deployment now.

  10. Sustained Global Biogeochemistry “BIO-ARGO” Johnson et al. (2009) >200 sensors with oxygen >12 with fluorometers or backscatter 4 with nitrate (funding available for 36 more)

  11. Short Term – Local Focus E.g. Autonomous Measurements of Carbon Fluxes in the North Atlantic BloomEric D’Asaro et al. : combining sensor-heavy floats and gliders with ship-based observations, satellites and models. Lagrangian Bio-Heavy Floats (water-following) T, C (2 each) O2 (2 types) Transmission (c) Chl fluorescence Backscatter (2) Ed () and Lu () PAR ISUS NO3- Sea Gliders (float-following) T, C O2 (2 types) Chl fluorescence (2) Backscatter (3) CDOM fluorescence

  12. A Simple and Relatively Cheap Approach CCE-1 Mooring Dickson et al.

  13. Microbes to Plankton • Satellites – global coverage for Chl, multiple ecological indicators being derived, BUT no species/community information. • Regional / Global time series - CPR, CalCOFI, reference sites. Simple technology, identification by eye, counting by eye or particle counters. Huge value. • Paradigm shift recently from the “classic” food web concept to ones incorporating the vitally important microbial loops. • Holy grail – automated species ID & counting, done cheaply,

  14. Exciting In- Situ Technology Imaging Flow Cytobot (IFCB) Environmental Sample Processor (ESP) Autonomous Microbial Genosensor (AMG) Scholin et al. Campbell et al. Paul & Fries

  15. Current Functions of ESP • Real-time application of DNA and protein arrays • collect sample/ homogenize/ filter the lysate • develop the array/ image with CCD camera/ broadcast results • Real-time application of qPCR • collect sample/ homogenize/ filter the lysate • SPE for DNA • run series of qPCR reactions • Sample archiving • whole cell microscopy/ FISH • nucleic acids (DNA, RNA) • phycotoxins

  16. Marine Microbes Harmful Algae Invertebrate Larvae The First Steps with ESP Pseudo-nitzschia sp. (toxic & nontoxic) Balanus glandula (Acorn barnacle) Heterosigma akashiwo (& other raphidophytes) Osedax Mytilus sp. (Shore mussels) Haywood et al. 2007 Journal of Phycology Jones et al. 2008 Molecular Ecology Notes Mikulski et al. 2008 Harmful Algae Preston et al. 2009 Environmental Microbiology Alexandrium tamarense/ catenella Carcinus maenus sp. (Green crab) Karenia sp. Scholin et al. Polychaete

  17. Benthic Systems Ecosystem services/functions : C sequestration, pollutant breakdown, nutrient regeneration, secondary production, biogenic habitat Paul Snelgrove’s summation to SCOR Workshop “Satellites = Not so interesting for benthic studies Observatories = Interesting for benthic studies Observatories + Ships = REALLY interesting for benthic studies”

  18. Ship + ROV/AUVs : superb spatial resolution CSIRO Jacobs Univ., Bremen,Germany MIT Sea Grant Snelgrove

  19. Neptune Observatory Vertical Profiler • CTD • Oxygen sensor • Fluorometer • Transmissometer • Nitrate sensor • CO2 sensor • Upwelling/downwelling radiometer • Broadband hydrophone • ADCP • Bottom pressure sensor

  20. Neptune Benthic System • Acoustic Doppler Profiler • Rotary SONAR • Multi-Beam SONAR • CTD • Microbial package • Sediment trap • Plankton pump  • Fluorometer • Hydrophone • Video cameras • High resolution still camera Craig Smith – Equatorial Pacific Abyssal Plain

  21. Higher Trophic Levels There is a critical need for improved Observing Technology to examine mid-trophic level/meso-pelagic communities. • These communities are the “missing link” in the Physics – BGC – Fish chain, and critical to our understanding of the relative influences of bottom up : top down controls in oceanic ecosystems. • CWPs note the promise of acoustic technology – ship based and upwards looking (e.g. MAAS) – development needed, ideally allowing acoustic data collection by SOO/VOS. • Long-range Ocean Acoustic Waveguide Remote Sensing (OAWRS)

  22. Bio-logging Technology • Archival Tags • Satellite Tags • Pop-Up Satellite Tags • Acoustic Tags • Natural Tags TOPP - CoML

  23. Bio-logging Sensors • Position • Species Identification • Temperature (Ta & Tb) • Light • Pressure • Salinity • Fluorescence • Chlorophyll Proxy • Foraging Events • Heart Rate • Speed/Acceleration

  24. Biologging Scope and Application • >50 Species, • 3 trophic levels • Tropics to poles • Coasts to Open Ocean • Oceanography • In Situ Measurements • Habitat Utilization • Behavior: Forage & Breeding • Physiology • Population Biology • Management: Assessment

  25. Elephant Seal Ecology in a Changing Environment

  26. Mature ARGO ACOUSTIC PROFILERS STANDARD BGC SENSORS BIOLOGGERS META GENOMICS “BIO” SATELLITES OTN WAVEGUIDE ACOUSTICS BIOOPTIC PLANKTON “BIO-GEO” ARGO ECO-GENOMIC SENSORS BARCODE CHIP pH /pN2 REMOTE CO2 PROTEOMICS Developing Local Global

  27. Prospects for a Truely Integrated GOOS? • Platforms • Mature /Prospective Technology • Globally and Locally Relevant Questions • Nested design (local – global) or Centralized? • Willingness to Compromise? • Willingness to Share Data, Set Standards? • Community (ies) Buy-In? • Funding?

  28. Do our oceans have the resilience to cope if we take another decade to agree and invest?

  29. Open ocean Argo OceanSites TOPP Satellite Repeat hydro

More Related