1 / 20

Profiling and Moored Instrumentation: Applications for Aquatic Ecosystems

Profiling and Moored Instrumentation: Applications for Aquatic Ecosystems. Sally MacIntyre Marine Science Institute University of California at Santa Barbara. Requirements for Ecosystem Studies. Include Terrestrial-Aquatic Linkages Address Spatial/Temporal Variability

derica
Download Presentation

Profiling and Moored Instrumentation: Applications for Aquatic Ecosystems

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. Profiling and Moored Instrumentation: Applications for Aquatic Ecosystems Sally MacIntyre Marine Science Institute University of California at Santa Barbara

  2. Requirements for Ecosystem Studies • Include Terrestrial-Aquatic Linkages • Address Spatial/Temporal Variability • High-resolution measurements of biogeochemical/hydrographic variables • Interdisciplinary studies combined with modeling that will indicate how aquatic ecosystems function and their responses when perturbed. • Recall the Importance of Boundaries

  3. Instrument Packages Free falling instrument package used by Tim Cowles, for studies of finestructure in biology, chemistry and hydrography. Includes optical instruments (Wetlab), CTDs, ADVs, and SCAMP. Self-contained autonomous profiler (SCAMP) made by Precision Measurement Engineering.

  4. High Resolution Optical Instrumentation Defines Layered Structure of Phytoplankton Relative Fluorescence (V) Courtesy of T.J. Cowles, Oregon State University

  5. High resolution current velocity and optical measurements identify sites of high organism abundance.

  6. Thin layers of high abundance (A) and vertical migrations (B) of zooplankton evidenced by acoustic backscattering. High abundance of phytoplankton, bacteria, and marine snow co-occurred with the zooplankton layers. Courtesy: D.V. Holliday, BAE SYSTEMS, San Diego. East Sound, San Juan Islands, WA. B A

  7. Thin Layers with High Abundance of Acoustic Scatterers.Courtesy of Edwin A. Cowen and David Farmer. Turbulent patches. Layers Bottom

  8. High Resolution Profiling and State-of-the-art Microbiology

  9. Fast Repitition Rate Fluorometry and Algal Physiology Diel variability in Fv/Fm in upper mixed layer (20 m) and thermocline Lake Tahoe September 20 , 2001 Gregg Mitchell and S. MacIntyre, Unpublished data

  10. Spatial Differences in Biomass – What Impact, if Any, on Productivity? Image courtesy of J.M. Melack, UCSB

  11. Spatial Variability – The Role of the Boundary Rates of biogeochemical processes differ inshore versus offshore due to enhanced mixing near boundaries. oC Depth m Day of Year 2000 - Mono Lake Unpublished data, E.E. McPhee and S.MacIntyre

  12. Turbulent Patch as Thermocline Upwells – Identified by ADCP and Fast Response TemperatureLoggers Self-contained Temperature Loggers Speed (m/s) Depth (m) Acoustic Doppler Current Profilers 4.5 hours – 16 July 2000 Time series measurements at inshore and offshore locations allow us to understand processes leading to spatial/temporal variations in mixing and their significance for ecosystem processes.

  13. Terrestrial – Aquatic Linkages - McMurdo Dry Valleys Lakes Lake Vanda and its Watershed

  14. Terrestrial- Aquatic Linkages: Toolik Lake and its Watershed

  15. Groundwater Intrusions. Do phytoplankton or bacteria respond? Important for CO2 efflux? Toolik Lake, South West Basin

  16. Geological Setting, Morphometry, and Pathways of Flow

  17. Flow Paths in Lakes Stream inflows become intrusions. Biogeochemical response varies with timing and magnitude of stream discharges. Toolik Lake, AK.

  18. Rapid tow-yowing by autonomous instruments allows mapping of dynamic features Intrusion of a salinity front into the Newport River near Beaufort, NC on March 13, 2003 over 2.2 hours. Data radio-relayed by 4 Rangers deployed simultaneously, cruising along parallel 500 m tracks ~40 m apart and tow-yowing between 0 and 1.5 m depth at 1 m/s. (courtesy Nekton Research, Durham, NC.) .

  19. How do we design integrative studies that demonstrate fundamental and general principles determining aquatic ecosystem function? oC Green (0.89 km2) s Depth m Musclow (22.2 km2) Trout 347 km2 Day of Year - 1995 NOLSS Lakes

  20. Integration • High-resolution measurements of biogeochemical/hydrographic variables at various locations over time. • Interdisciplinary studies and comparative studies combined with models that will indicate how aquatic ecosystems function and their responses when perturbed. • Important for understanding anthropogenic and climate induced changes!

More Related