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Environmental Factors Relevant to Eelgrass in the Neponset River Estuary Christina Ciarfella

Environmental Factors Relevant to Eelgrass in the Neponset River Estuary Christina Ciarfella. Map 1. Area of Neponset River estuary evaluated and used for calculations. Grazers. Wave Action. Light Intensity. Temperature. Inhibitors. Turbidity. Nitrogen. Flow Rate. Dissolved Oxygen.

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Environmental Factors Relevant to Eelgrass in the Neponset River Estuary Christina Ciarfella

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  1. Environmental Factors Relevant to Eelgrass in the Neponset RiverEstuary Christina Ciarfella Map 1. Area of Neponset River estuary evaluated and used for calculations

  2. Grazers Wave Action Light Intensity Temperature Inhibitors Turbidity Nitrogen Flow Rate Dissolved Oxygen Salinity pH Substrate

  3. Grazers Wave Action Light Intensity Temperature Inhibitors Turbidity Nitrogen Flow Rate Dissolved Oxygen Salinity pH Substrate

  4. Methods • Processed MWRA physical data • Calculated light intensity using MWRA secchi depths • Estuary Loading Model (NLOAD) • Processed MWRA chlorophyll a data • Reviewed literature and class assessments

  5. Map 1. Area of Neponset River estuary evaluated and used for calculations Source: MWRA website

  6. Seasonsal Temperature by Year Error bars are +/- 1 σ

  7. Seasonsal Salinity by Year

  8. Seasonal pH by Year Error bars are +/- 1 σ

  9. Seasonsal Dissolved Oxygen by Year

  10. Seasonsal Turbidity by Year

  11. Light Intensity Beers-Lambert Equation Id= I0e-kd Id= light intensity at site depth I0 = light intensity at the surface k = attentuation coefficient (1.7/secchi depth) d= site depth *Id must equal 6.4-12.9E/day for growth

  12. Estuarine Loading Modal Output: Net DIN loading in estuary is 666413.3kg N/year

  13. Inhibitors: phytoplankton & macroalgae Error bars are +/- 1 σ

  14. Potential Grazers • Mute swan • Brant goose • Mallard • Wigeon • Pintail • Coot • Blue crab • Marsh crab • Amphipods • Isopods • Chink snail • Sea slugs http://birdway.com.au/anatidae/black_swan/source/black_swan_85609.htm

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