docWhere are Double-crested Cormorant colonies monitored on the
download 
Report Transcription
Where are Double-crested Cormorant colonies monitored on the
Population Trends of Double-crested Cormorants on the Atlantic Coast Susan B. Elbin, NYC Audubon Elizabeth C. Craig, Cornell University 11th Annual Harbor Herons and Waterbirds... Fort Wadsworth, Staten Island, NY 3 December 2015 Today’s Presentation • A case study: New York Harbor • Where are Double-crested Cormorant colonies monitored on the East Coast? • What data do we have? • • Years surveyed Consistency • Are there any trends? • Next steps Today’s Presentation • A case study: New York Harbor • Where are Double-crested Cormorant colonies monitored on the East Coast? • What data do we have? • • Years surveyed Consistency • Are there any trends? • Next steps Double-crested Cormorants of the NY Harbor 2005-2015 Breeding Colonies Double-crested Cormorant vs. Waders 2500 Nesting Pairs 2000 1500 1000 500 Waders DCCO 0 2000 1800 1600 1400 1200 1000 800 600 400 200 0 1982 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 Double-crested Cormorant Nests 1806 1742 Years Occupied Number of Islands 1991-1998 3 1999-2001 5 2002-2006 6 2007-2009 7 2010 8 2011-2014 9 2015 8 Double-crested Cormorants Banded in the NY Harbor Year # Nests # Banded Total # Banded 2005 2006 906 2007 2008 2009 2010 2011 2012 2013 2014 2015 1175 1046 1333 1183 1372 1346 1406 1596 1679 1742 0 198 240 225 255 201 175 110 112 35 169 0 198 438 663 918 1119 1294 1404 1516 1551 1720 Band Returns and Live Re-sightings Swinburne Island Summary for NY Harbor Double-crested Cormorants nesting on most islands Largest colony is Swinburne Island (started in 2002) 1700 cormorants banded since 2006 Birds banded in 2006, 2007 have returned to Swinburne to nest. Band sightings range from Alabama, along the Gulf of Mexico, coastal Florida to New Hampshire Population growing but not returned to peak high Acknowledgments Colin Grubel, John Rowden, Tod Winston, Emilio Tobon, Kate Ruskin, Chip Weseloh, Mary Cool, Felicity Arengo, Matt Palmer James Danoff-Burg, Kim Tripp, Tom O’Connell, Steve Schiffer, George Frame, Dave Taft Doug Adamo, Kathy Garofalo, Tommy King, Andy Bernick Glenn Phillips, Alex Summers, Nate McVay, Dave Kunstler Ellen Pehek, Dave Adams, Dan Rosenblatt, Joe Pane, Michael Scheibel, Matthew Male, Michael Laspia, Michelle Gibbons, Chip Hamilton Chris Nadareski, Mike Reid Paul Oehrlein, John Waldman, Sheila Shukla, Fred Koontz, Martin Lowney, Rich Chipman, Christine Banks Alonso Aguirre, Andrew Taber New York City Audubon Harbor Heron Surveys (historical): Kathy Parsons, Paul Kerlinger And many, many others!!! Funding has been provided by the Leon Levy Foundation, New York Biodiversity Research Institute, Major Donors, New York City Audubon • A case study: New York Harbor • Where are Double-crested Cormorant colonies monitored on the East Coast? • What data do we have? • • Years surveyed Consistency • Are there any trends? • Next steps from WIRES CUTHBERT TREXEL JOSHI, 2001. • A case study: New York Harbor • Where are Double-crested Cormorant colonies monitored on the East Coast? • What data do we have? • • Years surveyed Consistency • Are there any trends? • Next steps Location of Double-crested Cormorant colonies surveyed along the Gulf of St. Lawrence coast of NB 2010 ? Location of Double-crested Cormorant colonies surveyed along PEI 2009 Prince Edward Island Data from WIRES CUTHBERT TREXEL JOSHI, 2001. Location of Double-crested Cormorant colonies surveyed along the Grand Manan Archipellego NB1995-2002 3 colonies recorded in 2001 Location of Double-crested Cormorant colonies surveyed along the Bay of Fundy, Gulf of St. Lawrence 2011 Rand Milton, personal communication Survey Year: 2011 95 colonies 17,500-18,500 prs Location of Double-crested Cormorant colonies surveyed along the Coast of Newfoundland 20052007 2005 2006 2007 Location of Double-crested Cormorant colonies Rhode Island, Connecticut, Massachusetts from WIRES CUTHBERT TREXEL JOSHI, 2001. New England Taken from WIRES CUTHBERT TREXEL JOSHI, 2001. Maine from WIRES CUTHBERT TREXEL JOSHI, 2001. Maine from WIRES CUTHBERT TREXEL JOSHI, 2001. Maine -3% change over 5 years Unpublished data from Linda Welch Massachusetts from WIRES CUTHBERT TREXEL JOSHI, 2001. Boston Harbor, Mass Unpublished data from Carol Trocki Rhode Island from WIRES CUTHBERT TREXEL JOSHI, 2001. Rhode Island Unpublished data from Christopher Raither Connecticut from WIRES CUTHBERT TREXEL JOSHI, 2001. Connecticut Unpublished data from Kate Moran and Jenny Dickson Coastal New York from WIRES CUTHBERT TREXEL JOSHI, 2001. Coastal New York Data from WIRES CUTHBERT TREXEL JOSHI, 2001. Coastal New York Unpublished data from Chip Hamilton New Jersey 60-70 cormorant nests 2012 60-70 cormorant nests 2012 (Mike Gochfeld, NJBirds) Delaware No data available in 2001 report Breeding was documented in 1991 No current data available Maryland from WIRES CUTHBERT TREXEL JOSHI, 2001. Maryland No current data available Virginia Unpublished data from Ruth Boettcher Location of Double-crested Cormorant colonies Boston, MA Location of Double-crested Cormorant colonies Connecticut • A case study: New York Harbor • Where are Double-crested Cormorant colonies monitored on the East Coast? • What data do we have? • • Years surveyed Consistency • Are there any trends? • Next steps • A case study: New York Harbor • Where are Double-crested Cormorant colonies monitored on the East Coast? • What data do we have? • • Years surveyed Consistency • Are there any trends? • Next steps What’s Missing? Acknowledgments US Fish and Wildlife Service NYC Parks – Natural Resources Group National Park Service NYC Audubon Volunteers NY/NJ Baykeeper NYAC – Huckleberry Indians American Littoral Society/Jamaica Bay Guardian 100+ volunteers Acknowledgments Thanks to all our dedicated volunteers! NJ AS Volunteers Andy Ackerman Anibal Aracil Felicity Arengo Catherine Barron Sue Beck Jennifer Beirne Andy Bernick Kate Boicourt Jessica Browning Claudia Brumbaugh Joanna Burger John Burke Hugh Carola Kathryn Carse Leonor Chavez Judy Chen Dorcas Cheng Charlie Clarkson Mary Cool Elizabeth Craig Judy Craig Yoryi De La Rosa Beth DeCelles Bey Devletian Dandelion Dilluvio Greg Elbin Rachel Elbin Donna Evans Mike Feller George Frame Ann Fridlind Kathy Garofalo Michele Gibbons Colin Grubel Chip Hamilton Wendi Harrison Mark Hauber Sandi Hemmerlein Kiera Hepford Anna Hermes Lena Kelly Kara Kirchhoff Coby Klein Jeff Kollbrunner Joe Kulhanek Dave Küntsler Jim Lemyle Emily Loffredo Nate McVay Kim Mendillo Lily Mleczko Chris Nadareski NYPD Harbor Unit Nadiya Nottingham Adam Osborn Joseph O’Sullivan Ed Owens Adriana Palmer Joe Pane Funding was provided by: Leon Levy Foundation Educational Foundation of America WCS/NOAA South Bronx Waterfront Partnership ConocoPhillips Bayway Refinery Mary and Joseph Fiore Penwith Trust National Park Service NYC Audubon Major Donors Michael Parkes Ellen Pehek Allan Portnoy Don Riepe Rocking the Boat Kate Ruskin Vicky Ruzicka Elizabeth Sorg Lenore Standish Susan Stanley Alex Summers Dave Taft Saleen Tennis Lydia Thomas Emilio Tobon Nicholas Truesdale Andrew Turk Kristen Vrancken Chip Weseloh Tod Winston Darren Zap Acknowledgments Sabina Wilhelm Neil Burgess Kevin Connor Carina Gjerdrum Randy Milton Greg Robertson Bruce Rodrigues Shannon Beliew