DODD & FRANZ: UPLAND SNAKES


Cemophora coccinea


4









1 3 5 7 9 11 13 15 17
 BIWEEKLY PERIODS



 Masticophis flagellum


a








 3 6 7 9 11 13 16 17
 BIWEEKLY PERIODS


 Coluber constrictor


14

 A






 1 3 s 7 a 11 1a 16 17
 BIWEEKLY PERIODS




 Micrurus fuAlius

 10. ---
1 '2. \I *M
 12







 I 1 5 11 1. 16 17
 BIWEEKLY PERIODS


Sistrurms miliarius


Figure 4. Biweekly seasonal activity of the five most common species trapped in xeric habitats in 1989.
Cco = Cemophora coccinea; Ccp = Coluber constrictor, Mfl = Masticophis flagellum; Mfu = Micrurus
fulvius; Smi = Sistrurus miliarius. Trapping extended from April 4 to November 17.






effort far exceeded the number of snakes caught, indicating a decline in seasonal

snake activity. Coluber constrictor was the most commonly trapped snake in mesic

habitats, and captures of this species accounted for the large number of snakes

trapped in March. Secondary peaks in number of snakes trapped also occurred in

June and July in mesic hammocks, because many Coluber were trapped, but it is

impossible to separate trap effort from capture effort because of the temporal

sampling protocol in mesic habitats. As with capture in xeric habitats, other

species showed no trends in seasonal activity.


BIWEEKLY PERIODS