7797

• UCREFRP Catalog Number: 7797
• Author: Collins, K.
• Title: Conceptual Management Plan for Razorback Sucker Habitat Enhancement in Flooded Bottomlands Scott M. Matheson Wetland Preserve Moab, Utah.
• USFW Year: 1994.
• Copyright Material: NO

3.. Amphibians and Reptiles
A large population of native northern leopard frogs (Rana
pipiens) are present in the wetlands of the Preserve.
Concentrations of leopard frogs occur in certain areas of
the Preserve where water is fairly stable throughout the
summer. Preferred habitat is found in areas with water up
to one foot deep with grassy wet meadows nearby. The
Preserve population of leopard frogs is believed to
overwinter in the Preserve (D. Ross pers. comm.). Northern
leopard frogs are considered sensitive by the Utah Division
of Wildlife Resources. Although healthy populations exist
on the Colorado and Virgin Rivers in Utah, this species has
declined in northern Utah. Bullfrogs (Rana catesbeiana) are
non-native and are also present in the same area but in
lower numbers. However, bullfrog numbers appear to be
increasing and leopard frog numbers declining within the
Preserve. It is speculated that the 1993 flooding of the
Preserve had an affect on frog populations, although the
degree of impact is unknown.
Shed snake skins were occasionally found over the course of
the summer in 1993. No snakes were identified.
Appendix E includes a list of potential amphibian and
reptile species that may occur on the Preserve.
Conclusion: An improved natural flood and water management
regime for razorback sucker populations is likely to enhance
leopard frog habitat.
4. Birds
A great variety of bird species use the Preserve although
not in high concentrations. One hundred and sixty-five
species have been sighted on the Preserve and recorded
(Appendix F). Further studies of bird occurrences and
habitat use within the Preserve are underway.
A great blue heron (Ardea herodias) rookery, which has been
active for many years, is located near the Colorado River on
the southern end of the Preserve. The great blue herons
nest in a cottonwood stand consisting of large mature trees.
Great blue herons forage for amphibians and small fish on
the Colorado River and in the Preserve wetlands. The
rookery is significant habitat of the Preserve and
considered a sensitive area.
Conclusion: Populations of great blue herons and other
birds that forage on small fish may pose a threat to the
survival of young razorback suckers. _
23

1

J