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Found 10 records similar to Amphibian Occupancy - Glacier
This measure tracks changes in presence and absence of three amphibian species at 12 potential breeding sites. Each site is visited twice (where possible), to estimate and account for detection probability the Western Toad (Bufo boreas), Columbia Spotted Frog (Rana luteiventris), and Long-toed salamander (Ambystoma macrodactylum). Mount Revelstoke National Park will monitor these amphibian species using this protocol once every 3 years.
Kootenay National Park samples 28 randomly selected potential amphibian breeding sites (out of possible 66) to determine presence or absence of amphibian species. Each of the 28 sites is visited 3 times every 2 years and all detected species are recorded.
Yoho National Park samples 28 randomly selected potential amphibian breeding sites (out of possible 66) to determine presence or absence of amphibian species. Each of the 28 sites is visited 3 times every 2 years and all detected species are recorded.
Amphibians are vulnerable to an array of
environmental changes because of their
permeable skin, a complex life history, and a dependence on moist terrestrial or wetland habitats. These attributes make them excellent indicators of the health of aquatic ecosystems. Amphibians can indicate problems of air and water pollution, drought, habitat loss and
fragmentation, the introduction of non-native species such as sport fish and bullfrogs, and the emergence and spread of infectious disease. Amphibian occupancy is determined using auditory and visual encounters surveys.
The Elk Island National Park annually monitors the change in amphibian occupancy by using call counts, including data collected by citizen scientists.
The health of individual amphibians, amphibian populations, and their wetland habitats are monitored in the oil sands region and at reference locations. Contaminants assessments are done at all sites. Amphibians developing near oil sands activities may be exposed to concentrations of oil sands-related contaminants, through air emissions as well as water contamination. The focus of field investigations is to evaluate the health of wild amphibian populations at varying distances from oil sands operations.
Amphibians around the world are in decline and this has led to many international initiatives to monitor and catalog amphibian biodiversity.
The western toad (Bufo boreas) found in Jasper National Park is a species of special concern protected under the Federal Species at Risk Act (SARA). Jasper National Park conducts auditory and visual amphibian surveys to estimate species occurrence. Occupancy modelling of amphibians in the Park, using presence/absence data, provides a useful and flexible framework for population trend analyses and helps inform management.
We surveyed the presence of four native amphibian species in wetlands throughout the eastern section of Banff National Park. This dataset represents detection or non-detection for each of the four species. We performed auditory and visual surveys of 60 pre-determined breeding sites . We surveyed each site two times during a sampling period between mid-April and the end of May.
This program captures counts of amphibian egg masses used to measure abundance and distribution trends in the breeding populations of Red-legged Frogs (Rana aurora) and Northwestern Salamanders (Ambystoma gracile) in the Long Beach Unit of the park. It is assumed that one egg-mass represents one breeding female. The Red-legged Frog is listed as a species of Special Concern (COSEWIC 2004). Surveys represent a complete visual census of selected representative lakes and wetlands (representing different wetland types, sizes and at variable distances from roads) and occur annually in the spring.
Water chemistry and 26 different metals were measured at 21 wetland sites where studies of amphibian health are being monitored. Water chemistry measurements (pH, conductivity, total dissolved solids, etc.) assess water quality, characterize the wetlands studied and allow for comparisons among the different types of wetlands monitored. The data show low concentrations of metals, with many metals undetectable.