Top of the reasons as to keeping wildlife records is to monitor their population in UK. It is no secret that UK has a very large number of species that needs to be monitored for effective population management. Such a huge monitoring process requires equally enormous amounts of funds. If you are going to maintain the population of millions of species, then funding is always a big problem. However, resources from the UK government and the NBN trust fund make it easier for the NFBR. It is even better with perfect population monitoring techniques.
There is a wide range of methods used to monitor wildlife population all in UK. You will have to master the use of these methods for accurate population estimation. The most common method is referred to as Complete Count Technique. The technique sees the researcher count all the individual animals in a certain habitat. This can be quite difficult for smaller organisms, but very effective and accurate for big animals like lions and elephants.
Indirect Counts and Incomplete Method
This is a technique used by national park managers to offer a clear indication of how many animals live in a particular habitat. They basically count a representative sample in certain areas that will come up with proper estimates of how many animals live in the park. With the incomplete counts method, you will have to segment areas into equal sizes like 4 quadrants. You will need to count one quadrant and then multiply by 4 or the number of segments created to find the populations estimate.
Mark- Recapture method
Finally, you probably have seen most professional researchers use it. It has been certified as a relatively better option when compared to Indirect and Incomplete counts techniques. You will basically capture a certain number of organisms of a certain species and mark them, then let them back into the population. You will later on recapture to evaluate the ratio of market to unmarked organisms in the recaptured sample. Monitoring the population of wildlife is surely made easier with utilization of these techniques.