What are the requirements for wild Rana sylvatica for water sources?

Rana sylvatica's wintering, spawning, hatching, metamorphosis are all done in water, so there is no water frog without Rana. Wild Rana frogs must have water sources or perennial rivers, which may be large or small, suitable in water quantity, generally 1-3 meters wide, depth of water 20-50 centimeters, flow rate 0.05 cubic meters per second, pH neutral, water source Adequate, clean, no pollution. In areas where the river is deep and where the winter does not stop, the Rana can naturally winter. Shallow river shoals, shallow bunkers such as natural blisters and puddles are places where spawning, hatching, and metamorphosis occur. After metamorphosis, Rana sylvatica is centered on rivers and is surrounded by forests.

Serial Laser Distance Sensor

With low-power, miniature size, the serial communication department range sensor with mm accuracy can measure up to 20m, 40m, 60m, 100m, 150m, 200m.
If you want to connect our laser range sensor boards together with your computer, you can directly choose the model with one USB connector.
In your project, you can use our distance sensor panel to measure a distance.
JRT Serial Laser Distance Sensor

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Chengdu JRT Meter Technology Co., Ltd , https://www.infrareddistancesensor.com