Bulleri and Chapman 2010 Paper discussion
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Bulleri and Chapman 2010 Paper discussion

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Presentation by Xianbin Lu and Laura Fidalgo

Presentation by Xianbin Lu and Laura Fidalgo

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    Bulleri and Chapman 2010 Paper discussion Bulleri and Chapman 2010 Paper discussion Presentation Transcript

    • The introduction of coastalinfrastructure as a driver ofchange in marine environmentsBy Fabio Bulleri and Maura G. ChapmanPresented by:Xianbin Liu and Laura FidalgoCourse: Coastal Environment – CIAM 6117Department of Environmental ScienceUniversidad de Puerto Rico, Rio PiedrasThursday, September 27, 2012
    • Introduction Problem – Diffident ecological – Human settlement near shore impact studies (75% by 2025) – Major tourism destination – Impacted coastal landscape – Alteration of intertidal zone and nearshore estuaries and marine waters habitat  Homogeneous topography affects species interactions  Unnatural Material affect colonization  Fragmentation
    • Introduction Objectives – Summarize the ecological impact of urban infrastructure on marine habitat know today – Discuss the implication of alternative coastal defense options – Identify the direction of future research
    • Urban Coastal Infrastructure Breakwaters – Reduce the intensity of waves in inshore waters – Decreases nutrients input and waste wash off – Changes marine life distribution
    • Management Alternative Incorporating into shoreline stabilization natural elements: – Wetland Vegetation – Seagrasses – Coarse Woody Debris – Shellfish Reefs – Coral Reefs Reduces ecological impacts without impinging on their efficacy in halting erosion.
    • Urban Coastal Infrastructure Groynes – Reduce along-shore transport of sediments
    • Management Alternative Small size groynes are less detrimental to shore sediment movement. Sand dunes – Protect beaches from erosion and recruit sand to eroded beaches.
    • Urban Coastal Infrastructure Jetties – Reduce wave- and tide-generated currents – Affects intertidal organisms biodiversity
    • Management Alternative Better collaboration among engineers, managers and ecologists to develop improved ways of building infrastructure. Provide habitat for more species without compromising engineering standards.
    • Urban Coastal Infrastructure Seawalls Bulkheads – Reduces the impact of waves on shore – Does not support natural communities assemblages – Increases steepness of shore – Deeper nearshore waters
    • Management Alternative (a) Intertidal ‘rock- pools’ constructed in the vertical face of a seawall in Sydney Harbour (Australia). Mitigates effects of loss or degradation of rocky platforms on intertidal biodiversity. (b) Rock-pool retaining water during low tide.
    • Urban Coastal Infrastructure Pilings – Sustain infrastructure, such as bridges, piers, docks – Shading and seafloor proximity affects communities assemblages (Glasby, 1999)
    • Management Alternative Height, orientation, and width of docks, piers, and bridges may reduce impact to vegetation productivity (Shaefer, D. and J. ( Lundin, 1999).
    • Urban Coastal Infrastructure Floating docks – Creates boating facilities – Shading consequences:  Decrease benthic productivity  Decrease carbon/nitrogen content  Changes in physical characteristics in sediment underneath – Affects Epibiota Structure
    • Urban Coastal Infrastructure Ropes-poles/cages- nets – Constituents of aquaculture facilities – Marine water pollution
    • Management Alternative Onshore fish farms are the most sustainable types of aquaculture. – the self-contained systems do not pollute the marine environment.
    • Future directions forresearch How fundamental ecological processes are affected Ecological interaction on artificial structures Ecological engineering
    • Concluding remarks Urban marine novel ecosystem need a closer understanding – Sustaining biodiversity – Successful conservation and management – Mitigate human coastal development and climate change effects
    • Discussion
    • Reference Curran, C. and D. Hoskins. 2006. Assessing the Impacts of Floating Docks on Bottom Character and Benthic Productivity in Coastal Georgia. Kunkel, C. M., R. W. Hallberg, and M. Oppenheimer. 2006. Coral reefs reduce tsunami impact in model simulations, Geophys. Res. Lett., 33, L23612, doi:10.1029/2006GL027892. The University of Sidney wed site: http://sydney.edu.au/science/bio/eicc/publications/journal Shaefer, D. and J. Lundin. 1999. Design and Construction of Docks to Minimize Seagrass Impacts. US Army Corps of Engineers WRP Technical Note VN–RS–3.1 June 1999.