Amphibians play an important role in the food web, serving as prey for many fish, reptile, bird, and mammal species and in turn eating a wide variety of vertebrate and invertebrate species. Amphibian Resource Briefs. National Capital Inventory & Monitoring Network. NCRN monitors amphibians in both streams and wetlands. Wetlands are visited four times a year—twice in spring to do visual surveys for egg masses and adult amphibians and twice in summer to dip-net for larval amphibians. Streams are visited twice each year—leaf litter is searched and cover objects are turned to find adult salamanders. Any amphibian malformations are recorded.
salamanders.
salamanders.