ISSS608 2017-18 T3 Assign Anthony Theodore Findings
Mysterious Disappearance at Wildlife Preserve
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Initial Exploration
Below is the distribution of all bird inside Lekagul Preserve that are detected by sensors. While there are many different species inside Lekagul Preserve, only Rose-crested Blue Pipit is seen grouping in the alleged dumping site area.
Thus looking at this behavior, it made sense that the Kasios was blamed with the disappearance of Rose-crested Blue Pipit. Of all species that live inside Lekagul Preserve, Rose-crested Blue Pipit is the species that will greatly be affected by the dumping situation.
However, not only Rose-crested Blue Pipit, but other species, such as Ordinary Snape is also seen grouping near the dumping site.
Bombadill and Vermillion Trillian is also spotted grouping near the dumping site, albeit further than Ordinary Snape and Rose-crested Blue Pipit.
We will use all this species as our control group because if indeed the dumping site was the cause of Rose-crested Blue Pipit disappearance, then these species should also be affected. As mention in the description, the extent of the area affected by the dumping site is unknown. In our approach, we mention that we only use the data from 2006 - 2017. The reason for this decision was, even though the assignment description stated that the patterns are reasonably representative of the bird locations across the area, all birds did not have significant record until 2006, as seen from the graph. We excluded 2018 because the data recorded for 2018 are until Q1, and insufficient data for the rest of 2018.
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Situation inside Lekagul Preserve
1. Disappearance of many birds
Initially, the population of Rose-crested Blue Pipit were increasing. They peaked at 2015, but then gradually decreased until 2017. This may indicate that there is indeed something happened with the Rose-crested Blue Pipit, and by visualizing year by year cluster of the bird, we can see that the bird actually moved away in 2015, as seen below:
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The cause of this migration is unknown, but we could assume that it has something to do with the alleged waste dumping taking place, since Rose-crested Blue Pipit is the only bird that cluster in the alleged dumping area, and no other bird display such drastic migration.
For comparison, we will show our control group situation. Ordinary Snape is a species nearest to the dumping site. If we see at the year by year position, it is very clear that they never migrate outside their cluster, unlike Rose-crested Blue Pipit. However, their population is also decreasing, albeit not as much as Rose-crested Blue Pipit variant.
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The same case also happening with Bombadil and Vermillion Trillian species. However, Vermillion Trillian species only decreased a little bit, and start to stabilized at 2015.
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Below is the gallery image of all other birds position year by year.
- Galerella sanguinea Zoo Praha 2011-2.jpg
Galerella sanguinea (Slender Mongoose)
- Felis silvestris silvestris.jpg
- Six weeks old cat (aka).jpg
Felis silvestris catus (A Young Cat)
- Felis catus-cat on snow.jpg
Felis catus (cat on snow)
- Tired 20-year-old cat.jpg
Felis silvestris catus (Tired 20-year-old cat)
- Cat November 2010-1a.jpg
Felis silvestris catus (Cat)
- Felis silvestris silvestris Luc Viatour.jpg
Felis silvestris silvestris (European wildcat)
- June odd-eyed-cat cropped.jpg
Felis catus (Domestic cat)
- Lynx kitten.jpg
Lynx lynx (A Young Lynx)
Link for the dashboard:
2. Change of birds behaviour
By plotting sound and call in one chart, we can see that in 2015, as the population of Rose-crested Blue Pipit started to decrease, the number of call also increased to almost double than the number of song. This can indicate that the Rose-crested Blue Pipit is in stressed condition.
Change of Birds Behaviour
Vocal Characteristic
Vocal comparison
