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Narragansett Bay Areal Extent of Hypoxia in 2009 October 8, 2009 NOAA CHRP Managers Meeting Christopher Deacutis Narragansett Bay Estuary Program URI Coastal,

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Presentation on theme: "Narragansett Bay Areal Extent of Hypoxia in 2009 October 8, 2009 NOAA CHRP Managers Meeting Christopher Deacutis Narragansett Bay Estuary Program URI Coastal,"— Presentation transcript:

1 Narragansett Bay Areal Extent of Hypoxia in 2009 October 8, 2009 NOAA CHRP Managers Meeting Christopher Deacutis Narragansett Bay Estuary Program URI Coastal, Institute & Warren Prell & David Murray Brown Univ.

2 Minimum D.O. June 18 ; July15 ; July23 End neapneapstrong spring tide

3 Bottom D.O. June 18 ; July15 ; July23

4

5

6 Minimum D.O. Aug 4 ; Aug13 ; Sept. 1 Weak SpringNeapEnd Neap tide

7 Bottom D.O. Aug 4 ; Aug13 ; Sept. 1

8 Surface D.O. June 18 ; July15 ; July23

9 Surface D.O. Aug 4 ; Aug13 ; Sept. 1

10 % of Survey Area at various hypoxic levels since 1999 (Total area surveyed ~ 150 km 2 )

11 Year 1938 1931 1948 1955 1968 1972 1982 1984 1986 19982003 2006 2009 1938

12 Sulfidic waters Greenwich Cove August 18 2009 Fish kill Chepiwanopxet Greenwich Bay August 1,2009 Juv. Winter Flounder 8-1-09 Piscivore Feast

13 Good News ! - Ruppia (Widgeon Grass) At Cedar Tree Pt.

14 Video Break Film clips Greenwich Bay August 14, 2009

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