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Microbial food-web structure and function in Lake Erie: Influence of benthic-pelagic coupling on hypoxia in the central basin

This project seeks to evaluate the spatial and temporal variation in   microbial-based carbon and its subsequent deposition and   contribution to the seasonal development of hypoxia in the central   basin of Lake Erie. This will be determined by directly measuring   microbial biomass, species composition, and the balance between   microbial growth and loss rates in time and space. This project will   also assess links between changes in microbial population dynamics   and recent food web changes in Lake Erie through comparative studies   among sites and basins. The researchers believe this approach has   merit, because the production of organic matter and its subsequent   deposition to the sediments is a key factor that fuels hypoxia in   systems such as the Gulf of Mexico, and these factors can be managed   (e.g., Rabalais et al. 2  5). Having said this, we fully realize   that physical oceanographic factors can influence hypoxia (e.g.,   advection, thickness of hypolimnion), particularly in shallow basins   (e.g., Burns 1985); however, these factors are likely to be more   difficult to manage.     The specific objectives of the study are: 1) measure the seasonal   and spatial extent of the subsurface algal maximum in Lake Erie, 2)   determine if a benthic algal assemblage exists in the central basin,   and 3) evaluate the interaction between pelagic and benthic   microbial assemblages and their likely contribution towards HOD in   the central basin.    (hypoxia); (Lake Erie); (food-web); (food-web structure)

Status
In progress
Type
Project
Start Date
End Date
Researchers
Hunter J. CarrickPrincipal Investigator
Associated with 1 projects
Agencies
Pennsylvania Sea Grant $ 0.00USDEstimates

Funding 2 projects for a total of $4,450.00
NOAA $ 0.00USDEstimates

Funding 11 projects for a total of $502,508.00
Scope of Study
Field Investigation
Scale of Phenomena
Biochemical
Landscape
Physical/Chemical
Impact of Pollutants
Nutrients, Including Phosphorus
Lake Basin Connecting Channels
Lake Erie
Annex Numbers
Research & Development
Annex 17
Cause-effect inter-relationships of productivity and ecotoxicity
Mass transfer of pollutants between GL Basin Ecosystem components
General
Annex
  • Annex Numbers
    Annex Numbers
    Research & Development
  • Annex 17
    Annex 17
    Cause-effect inter-relationships of productivity and ecotoxicity
    Mass transfer of pollutants between GL Basin Ecosystem components

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