WEEK13-Linkage Mapper

LM Tools-Pathway tool, Barrier mapper, Pinchpoint mapper

On-class stuff

The output of Linkagemapper's first tool-barrier mapper is as follows. The working principle is based on the principle of circuitscape, that is, circuit theory, which can be understood as an arbitrary selection of a pixel, the so-called current input point, and then a certain range of all pixels can be used as a circuit, the value of the pixel grid represents the value of the resistance, you can calculate the distribution of the current in the range of each pixel, and then traversed through the pixel, and then accumulate the results .

The graph below represents the detection of the resistance values present in a certain range around the minimum path that has been generated, the dark purple area indicates the highest resistance, which means that this is where the intervention is most needed. However, the sources of resistance can be categorized as human and natural, so if they are caused by human factors, then work can be done to mitigate them.

Here is the output of the second tool-pinchpoint, again based on circuit theory, this tool asks for the input of core habitat patches, the red grid portion of the image above. Since the source of the organism could be every habitat patch, the figure below is a graph showing the accumulation of currents between every two habitat patches, and since the source is defined, the resistance within it will be very strong, so the results show that the portion of the forest around the core area will be very fragile and sensitive, and is the portion that needs to be prioritized for protection and reinforcement of resistance.