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8 BNs found.

Arhopalus Flight Activity

This Bayesian network was developed to model the flight activity of Arhopalus ferus, a wood borer. The model is used to predict flight activity as a function of meteorological conditions. This contributes to the quantification of potential phytosanitary risks as it is a measure of potential exposure of export logs to flying/dispersing insects.

The data set for this model can be found at <abnms.org...>.

Pawson, S.M., Marcot, B.G., Woodberry, O.G
Netica .dne format
Biology > Ecology
Hylastes Flight Activity

This Bayesian network was developed to model the flight activity of Hylastes ater, a bark beetle. The model is used to predict flight activity as a function of meteorological conditions. This contributes to the quantification of potential phytosanitary risks as it is a measure of potential exposure of export logs to flying/dispersing insects.

The data set for this model can be found at <abnms.org...>.

Pawson, S.M., Marcot, B.G., Woodberry, O.G
Netica .dne format
Biology > Ecology
Hylurgus Flight Activity

This Bayesian network was developed to model the flight activity of Hylurgus ligniperda as a function of meteorological conditions. H. ligniperda is a common forest insect within New Zealand Pinus radiata plantations forests. Predicting flight activity is one step towards assessing potential phytosanitary risks of forest exports as it is an indication of the exposure of logs to flying/dispersing insects.

The data set for this model can be found at <abnms.org...>.

Pawson, S.M., Marcot, B.G., Woodberry, O.W.
Netica .dne format
Biology > Ecology
Flight activity
Animals

With this network (also available from <www.norsys.com...>) you can enter some characteristics of a particular animal, and watch how the probabilities of its other characteristics (and what type of animal it is) change.

This is just a toy example. For a real-world application, it would have to be extended to include many animals (or plants, bacteria, etc.), probably all from the same environment, or the same subclass, etc. Also, the "Animal" node should probably have an "Other" state.

The fun part of this network is to extend it to include more animals and more characteristics. You may need to define other groupings, such as the "Class" node, in order to keep things manageable. If you make a great network, send it to Norsys; we would love to include it in our library (with the proper credits).

Norsys Software Corp
Netica .dne format
Biology > Ecology
Animals, Birds, Mammals, Reptiles
Habitat Suitability

The habitat suitability problem is one where a close to extinct species has to be moved to another country/continent to determine if the species can successfully survive.

In this example, the Sumatran tiger (close to extinction) is to be relocated to central Africa where the habitat is to be assessed for its suitability.

Dhananjay Thiruvady
GeNIe 2.0 XML format
Biology > Ecology
Habitat, Tigers, Africa
Koalas

Fraser Island in Queensland did not traditionally house Koala populations. However, since they were brought to the island they have provided benefits and have also caused problems. On a positive note, they are an attraction for tourists providing the island authorities with resources for maintenance. Conversely, they tend to disrupt the flora, even wiping out species of trees if they are not monitored. Thus, in order to maintain healthy populations without damage to the environment, the authorities can decide to cull a number of Koalas (inexpensive) or relocate to the mainland (expensive) where they are already well adapted. Additionally, animal welfare groups do not take kindly to culling.

Note: this is a fictitious example.

Dhananjay Thiruvady
Netica .dne format
Biology > Ecology
Waterhole Fence

An assessment of the expected value of putting in a fence to promote plant survival, in the face of factors that affect the durability of the fence.

Bayesian Intelligence
Netica .dne format
Biology > Ecology
Native Fish V1

This BN calculates the probability of native fish abundance given pesticide in use and in river, drought conditions, river flow, annual rainfall and tree conditions.

Bayesian Intelligence
Netica .dne format
Biology > Ecology