american oystercatcher management in florida

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Ann B. Hodgson, Ph. D., PWS Gulf Coast Ecosystem Science Coordinator / Sanctuaries Manager Florida Coastal Islands Sanctuaries Program 410 Ware Blvd., Ste. 702 Tampa, FL 33619 813 623-6826 Phone / 813 376-8663 Field Phone ahodgson@audubon.org. American Oystercatcher Management in Florida. - PowerPoint PPT Presentation

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  • American Oystercatcher Management in FloridaAnn B. Hodgson, Ph. D., PWSGulf Coast Ecosystem Science Coordinator / Sanctuaries Manager

    Florida Coastal Islands Sanctuaries Program410 Ware Blvd., Ste. 702Tampa, FL 33619813 623-6826 Phone / 813 376-8663 Field Phoneahodgson@audubon.org

  • Florida Coastal Islands Sanctuaries Program StaffDr. Ann Hodgson, Gulf Coast Ecosystem Science Coordinator / Sanctuaries ManagerAnn PaulTampa Bay Regional CoordinatorMark RachalField BiologistCarol CasselsSeasonal WardenRob HeathSpoonbill TechnicianProject ColonyWatch Volunteers

    Audubon of Floridas organizational plan:The Gulf Coast Region was established in 2005 as one of six Audubon of Florida organizational regions.FCISP manages 9+ counties on the Gulf Coast, ANDThe 5 historic sanctuaries in Palm Beach County.FCISP continues (>100 yrs) as a FL colonial waterbird research center. FCISP provides technical services to public and private cooperators.

  • AMOY Conservation Issuesin Tampa Bay, FLLarge AMOY breeding population and high CBC counts annually.Shoreline development continues to decrease habitat options for all life history requirements.Human disturbance from water-based recreation, residential, commercial and industrial development is stressing the AMOY population. Amplified ship wakes, primarily from the cruise ships and large cargo traffic (Tampa Bay now allows Panamax ships), create impressive bow wakes that are over-washing AMOY nests, particularly with the high spring tides.

  • American Oystercatcher Count by 2003 CBC Circle

  • CBC FL - number of birds reported per party hour

  • Data: Number of birds reported per party hourThe graph was generated using the number of birds reported per party hour; a measure of the amount of time spent searching for birds or the amount of effort expended. This is one way to standardize Christmas Bird Count data over time. Some years, there may have been a lot of people counting birds, while other years there may have been fewer participants in the field. As CBC participation fluctuates (and as the number of CBC Count Circles increases), raw count numbers may also fluctuate (more counters can often lead to more birds reported).

  • CBC FL - raw count numbers

  • Data: Raw count numbers The graph was generated using raw count numbers for the species selected. Because of fluctuations in the number of participants on CBC's from year to year, and the growth in the number of CBC count circles over the last 100 years, the graph may be misleading.

  • 2006 Pairs of AMOY, SNPL, and WIPL on the FL Gulf Coast

    Colony Name

    Pairs/Nests

    Bay Region

    County

    AMOY

    SNPL

    WIPL

    Cross Florida Barge Canal Islands

    20

    11

    Gulf of Mexico

    Citrus

    Anclote Bar

    2

    8

    22

    St. Joseph Sound

    Pinellas

    Anclote River Mouth Spoil Island

    1

    Anclote River

    Pinellas

    South Anclote Bar

    1

    2

    St. Joseph Sound

    Pinellas

    Three Rooker Island

    2

    2

    St. Joseph Sound

    Pinellas

    St. Joseph Sound Marker 28

    1

    St. Joseph Sound

    Pinellas

    St. Joseph Sound Marker 26

    1

    St. Joseph Sound

    Pinellas

    Ozona Spoil East

    1

    St. Joseph Sound

    Pinellas

    Clearwater Harbor I-25

    3

    Clearwater Harbor

    Pinellas

    Belleair Beach Bird Island

    1

    Clearwater Harbor

    Pinellas

    Indian Rocks Beach Bird Island

    1

    Clearwater Harbor

    Pinellas

    Darling Key, Marker 20, Boca Ciega Bay

    1

    Boca Ciega Bay

    Pinellas

    Little Bird Key NWR

    1

    Boca Ciega Bay

    Pinellas

    Egmont Key NWR & State Park

    3

    Tampa Bay mouth

    Pinellas

    Tampa Port Authority Spoil Island 2D

    35

    Hillsborough Bay

    Hillsborough

    Alafia Bank Bird Colony

    16

    Hillsborough Bay

    Hillsborough

    Tampa Port Authority Spoil Island 3D

    15

    Hillsborough Bay

    Hillsborough

    Apollo Beach & Fishhook Spoil

    7

    Hillsborough Bay

    Hillsborough

    Passage Key NWR

    1

    Tampa Bay mouth

    Hillsborough

    Port Manatee Key

    5

    30

    East Tampa Bay

    Manatee

    Skiers Island

    1

    Sarasota Bay

    Sarasota

    Pelican Cove Point

    1

    Sarasota Bay

    Sarasota

    Little Sarasota Bay Marker 34

    1

    Sarasota Bay

    Sarasota

    Blackburn Bay Marker 20

    1

    Sarasota Bay

    Sarasota

    Total

    122

    10

    65

  • 2007 Pairs of AMOY on the FL Gulf Coast

  • 2007 Pairs of AMOY on the FL Gulf Coast

  • AMOY breeding census 1994-2006, Tampa Bay, FL

    DATA All Years SPSS SPP TOP

    YearBrown PelicanDouble-crested CormorantAnhingaGreat Blue HeronGreat EgretSnowy EgretLittle Blue HeronTricolored HeronReddish EgretCattle EgretGreen HeronBlack-crowned Night-HeronYellow-crowned Night-HeronWhite IbisGlossy IbisRoseate SpoonbillWood StorkSnowy PloverWilson's PloverAmerican OystercatcherBlack-necked StiltWilletLaughing GullGull-billed TernCaspian TernRoyal TernSandwich TernLeast TernBlack SkimmerTotals

    19941648648210278532807305681715800779190730040510964006701115020280217027017060037524

    199520656452723126871060302596764841161991741079550714836116760111930029126944444558045991

    1996165054333333378688325369767433714266183930174011110300770311050009322554458568534771

    199711214572232845067093084206266471111310262413281397414940311500267325052810775634057

    199816644592763148758442737445723821626591172325461865313088201613000175297753915076743941

    199914905052761964924412454645733553416311252172531641631139140461395009230903104281032112

    2000106341219917750770127353372375015189946916301180141038404210100110230685242555230024

    20011085369249161645831334894669190301341255985336162117028460211710078236727528762343203

    2002131139125325778512203548466153602412315273031992902400110558271680088828486469677040616

    200390157026931393211654701112525185151559017809474287277454945328172551680303087410365352320

    2004759490311272716106226793274196940154777978354379241031121302016775208041126687552438531

    2005137454020226172293022254285101528698111256375390150558962216050880287077813360938807

    200614093942252217258682927006311151610443971513054600308421371385048823677894530734188

    DATA All Years SPSS SPP LEFT

    Species1994199519961997199819992000200120022003200420052006

    Brown Pelican16482065165011211664149010631085131190175913741409

    Double-crested Cormorant648645543457459505412369391570490540394

    Anhinga210272333223276276199249253269311202225

    Great Blue Heron278312333284314196177161257313272261221

    Great Egret532687786506875492507645785932716722725

    Snowy Egret8071060883709844441701831122011651062930868

    Little Blue Heron305302253308273245273334354470267222292

    Tricolored Heron6815966974207444645338948461112932542700

    Reddish Egret71766762575772666152748563

    Cattle Egret5800484143376647238233553750919053605185196910151115

    Green Heron7161411163415302415402816

    Black-crowned Night-Heron7919926611326516318913412315515469104

    Yellow-crowned Night-Heron190174183102911129412515290778143

    White Ibis73001079593016241172325217691659857303178097978112569715

    Glossy Ibis405507740328546253301336199474354375130

    Roseate Spoonbill109148111139186164180162290287379390546

    Wood Stork64361037453163141117240277241150

    Snowy Plover0101110004000

    Wilson's Plover01604301332154315530

    American Oystercatcher6776779488918484105941218984

    Black-necked Stilt00002040060585330621

    Willet1111313164642212728202237

    Laughing Gull15020193001050011500130001395010100171001680017255167751605013850

    Gull-billed Tern220210178162084

    Caspian Tern809193677592102828880808088

    Royal Tern2170269422553250297730903068367228483030411228702367

    Sandwich Tern270444445528539310524752646874668778789

    Least Tern1704585107150422587961037513345

    Black Skimmer600580685756767810552623770653524609307

    Totals37524459913477134057439413211230024432034061652320385313880734188

    DATA All Years

    SpeciesListed Species1994199519961997199819992000200120022003200420052006Linear R^2Exponential R^2

    Brown PelicanSSC16482065165011211664149010631085131190175913741409-0.3886

    Double-crested Cormorant648645543457459505412369391570490540394-0.258

    Anhinga210272333223276276199249253269311202225-0.0215

    Great Blue Heron278312333284314196177161257313272261221-0.1207

    Great Egret5326877865068754925076457859327167227250.118

    Snowy EgretSSC80710608837098444417018311220116510629308680.0902

    Little Blue HeronSSC3053022533082732452733343544702672222920.0116

    Tricolored HeronSSC68159669742074446453389484611129325427000.1391

    Reddish EgretSSC717667625757726661527485630.0008

    Cattle Egret5800484143376647238233553750919053605185196910151115-0.2054

    Green Heron7161411163415302415402816

    Black-crowned Night-Heron7919926611326516318913412315515469104-0.152

    Yellow-crowned Night-Heron190174183102911129412515290778143-0.62

    White IbisSSC730010,7959301624117,23252176916598573031780979781125697150.0209

    Glossy Ibis405507740328546253301336199474354375130-0.2915

    Roseate SpoonbillSSC1091481111391861641801622902873793905460.80350.8832

    Wood StorkE64361037453163141117240277241150

    Snowy PloverT0101110004000

    Wilson's Plover016043013321543155300.3881

    American OystercatcherSSC67767794889184841059412189840.3409

    Black-necked Stilt00002040060585330621

    Willet11113131646422127282022370.1633

    Laughing Gull15,0

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