278
The Biology of Sea Turtles, Vol. II
FIGURE 11.1 Examples of long time series of sea turtle abundance. (Data generously provided by B. Witherington, Florida Fish and Wildlife Conservation Commission, Florida
Marine Research Institute, Index Nesting Beach Survey Program [greens and loggerheads];
the Gladys Porter Zoo and SEMARNAT/INE, Mexico [Kemp’s ridleys].
7000
6000
5000
4000
3000
2000
1000
0
Green nests
Index Beaches, Florida, USA
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
(a)
70000
60000
50000
40000
30000
20000
10000
0
Loggerhead nests
Index Beaches, Florida, USA
(b)
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
7000
6000
5000
4000
3000
2000
1000
0
Kemp's ridley nests
Tamaulipas and Vera Cruz, Mexico
(c)
1978
1980
1982
1984
1986
1988
1990
1992
1994
1996
1998
2000
all
camps
Rancho
Nuevo
1123 book.book Page 278 Tuesday, November 12, 2002 7:43 AM