Daniel H. Monson, Daniel F. Doak, Brenda E. Ballachey, and James L. Bodkin. 2011. Could residual oil from the Exxon Valdez spill create a long-term population “sink” for sea otters in Alaska? Ecological Applications 21:2917–2932.

Supplement

All data used to fit modifications to source and sink population survival rates including: sea otter population abundance estimates for western Prince William Sound, Alaska and the northern Knight Island subarea of Prince William Sound from 1993–2009, annual age-at-death distributions derived from carcasses collected in oiled areas of western Prince William Sound, Alaska from 1990–2008, live female age distributions from the northern Knight Island area (i.e. oiled area) of western Prince William Sound, Alaska from 1996–2008, and live female age distributions from the Montague Island area (i.e. unoiled area) of western Prince William Sound, Alaska from 1996–2008.
Ecological Archives A021-131-S1.

Copyright

Authors
File list (downloads)
Description

Author(s)

Daniel H. Monson
U.S. Geological Survey
Alaska Science Center
4210 University Drive
Anchorage, AK 99508
USA
Email: dmonson@usgs.gov

Daniel F. Doak
Department of Zoology and Physiology
University of Wyoming
1000 E. University Ave., Dept. 3166
Laramie, WY 82071
USA
Email: ddoak@uwyo.edu

Brenda E. Ballachey
U.S. Geological Survey
Alaska Science Center
4210 University Drive
Anchorage, AK 99508
USA
Email: bballachey@usgs.gov

James L. Bodkin
U.S. Geological Survey
Alaska Science Center
616 Marrowstone Point Road
Nordland, WA 98358
USA
Email: jbodkin@usgs.gov

File list

survey_data.txt
post_spill_carc_data.txt
live_data_kni.txt
live_data_mon.txt

Description

The survey_data.txt file is a tab-delimited file. It contains sea otter population abundance estimates derived from aerial survey data for western Prince William Sound, Alaska and the northern Knight Island subarea of Prince William Sound from 1993–009.

Column definitions

  1. Survey year
  2. Western Prince William Sound sea otter abundance estimate (N)
  3. Western Prince William Sound variance
  4. Northern Knight Island sea otter abundance estimate (N)
  5. Northern Knight Island variance

Missing values are represented as “-9”

Checksum values are:

Column 2 (WPWS N): SUM = 39113; 5 missing values
Column 3 (WPWS var): SUM = 2796491; 5 missing values
Column 4 (northern KNI N): SUM = 985; 6 missing values
Column 5 (northern KNI var): SUM = 4214; 6 missing values

The post_spill_carc_data.txt file is a tab-delimited file. It contains annual age-at-death distributions derived from carcasses collected in oiled areas of western Prince William Sound, Alaska from 1990–2009.

Column definitions

  1. Age
  2. 1990 distribution
  3. 1991 distribution
  4. 1992 distribution
  5. 1993 distribution
  6. 1994 distribution
  7. 1995 distribution
  8. 1996 distribution
  9. 1997 distribution
  10. 1998 distribution
  11. 1999 distribution
  12. 2000 distribution
  13. 2001 distribution
  14. 2002 distribution
  15. 2003 distribution
  16. 2004 distribution
  17. 2005 distribution
  18. 2006 distribution
  19. 2007 distribution
  20. 2008 distribution
  21. 2009 distribution

Missing values are represented as “-9”

Checksum values are:

Column 2 (1990 distribution): SUM = 59; 0 missing values
Column 3 (1991 distribution): SUM = 14; 0 missing values
Column 4 (1992 distribution): SUM = 23; 0 missing values
Column 5 (1993 distribution): SUM = 23; 0 missing values
Column 6 (1994 distribution): SUM = 21; 0 missing values
Column 7 (1995 distribution): SUM = 10; 0 missing values
Column 8 (1996 distribution): SUM = 22; 0 missing values
Column 9 (1997 distribution): SUM = 22; 0 missing values
Column 10 (1998 distribution): SUM = 51; 0 missing values
Column 11 (1999 distribution): SUM = 29; 0 missing values
Column 12 (2000 distribution): SUM = 54; 0 missing values
Column 13 (2001 distribution): SUM = 32; 0 missing values
Column 14 (2002 distribution): SUM = 16; 0 missing values
Column 15 (2003 distribution): SUM = 37; 0 missing values
Column 16 (2004 distribution): SUM = 26; 0 missing values
Column 17 (2005 distribution): SUM = 25; 0 missing values
Column 18 (2006 distribution): SUM = 16; 0 missing values
Column 19 (2007 distribution): SUM = 18; 0 missing values
Column 20 (2008 distribution): SUM = 32; 0 missing values
Column 21 (2009 distribution): SUM = 0; 21 missing values

The live_data_kni.txt file is a tab-delimited file. It contains live female age distributions from the northern Knight Island area (i.e. oiled area) of western Prince William Sound, Alaska from 1996–2009.

Column definitions

  1. Age
  2. 1990 distribution
  3. 1991 distribution
  4. 1992 distribution
  5. 1993 distribution
  6. 1994 distribution
  7. 1995 distribution
  8. 1996 distribution
  9. 1997 distribution
  10. 1998 distribution
  11. 999 distribution
  12. 2000 distribution
  13. 2001 distribution
  14. 2002 distribution
  15. 2003 distribution
  16. 2004 distribution
  17. 2005 distribution
  18. 2006 distribution
  19. 2007 distribution
  20. 2008 distribution
  21. 2009 distribution

Missing values are represented as “-9”

Checksum values are:

Column 2 (1990 distribution): SUM = 0; 21 missing values
Column 3 (1991 distribution): SUM = 0; 21 missing values
Column 4 (1992 distribution): SUM = 0; 21 missing values
Column 5 (1993 distribution): SUM = 0; 21 missing values
Column 6 (1994 distribution): SUM = 0; 21 missing values
Column 7 (1995 distribution): SUM = 0; 21 missing values
Column 8 (1996 distribution): SUM = 52; 0 missing values
Column 9 (1997 distribution): SUM = 55; 0 missing values
Column 10 (1998 distribution): SUM = 46; 0 missing values
Column 11 (1999 distribution): SUM = 37; 0 missing values
Column 12 (2000 distribution): SUM = 37; 0 missing values
Column 13 (2001 distribution): SUM = 32; 0 missing values
Column 14 (2002 distribution): SUM = 44; 0 missing values
Column 15 (2003 distribution): SUM = 43; 0 missing values
Column 16 (2004 distribution): SUM = 40; 0 missing values
Column 17 (2005 distribution): SUM = 25; 0 missing values
Column 18 (2006 distribution): SUM = 16; 0 missing values
Column 19 (2007 distribution): SUM = 0; 21 missing values
Column 20 (2008 distribution): SUM = 32; 0 missing values
Column 21 (2009 distribution): SUM = 0; 21 missing values

The live_data_mon.txt file is a tab-delimited file. It contains live female age distributions from the Montague Island area (i.e. unoiled area) of western Prince William Sound, Alaska from 1996–2009.

Column definitions

  1. Age
  2. 1990 distribution
  3. 1991 distribution
  4. 1992 distribution
  5. 1993 distribution
  6. 1994 distribution
  7. 1995 distribution
  8. 1996 distribution
  9. 1997 distribution
  10. 1998 distribution
  11. 1999 distribution
  12. 2000 distribution
  13. 2001 distribution
  14. 2002 distribution
  15. 2003 distribution
  16. 2004 distribution
  17. 2005 distribution
  18. 2006 distribution
  19. 2007 distribution
  20. 2008 distribution
  21. 2009 distribution

Missing values are represented as “-9”

Checksum values are:

Column 2 (1990 distribution): SUM = 0; 21 missing values
Column 3 (1991 distribution): SUM = 0; 21 missing values
Column 4 (1992 distribution): SUM = 0; 21 missing values
Column 5 (1993 distribution): SUM = 0; 21 missing values
Column 6 (1994 distribution): SUM = 0; 21 missing values
Column 7 (1995 distribution): SUM = 0; 21 missing values
Column 8 (1996 distribution): SUM = 26; 0 missing values
Column 9 (1997 distribution): SUM = 23; 0 missing values
Column 10 (1998 distribution): SUM = 34; 0 missing values
Column 11 (1999 distribution): SUM = 0; 21 missing values
Column 12 (2000 distribution): SUM = 0; 21 missing values
Column 13 (2001 distribution): SUM = 13; 0 missing values
Column 14 (2002 distribution): SUM = 9; 0 missing values
Column 15 (2003 distribution): SUM = 0; 21 missing values
Column 16 (2004 distribution): SUM = 15; 0 missing values
Column 17 (2005 distribution): SUM = 12; 0 missing values
Column 18 (2006 distribution): SUM = 8; 0 missing values
Column 19 (2007 distribution): SUM = 10; 0 missing values
Column 20 (2008 distribution): SUM = 24; 0 missing values
Column 21 (2009 distribution): SUM = 0; 21 missing values