Ecology | Insight Maker

This model describes how costs, income and ecosystem services change with stocking rate.

Goat Management

15

This model explains the difference between Mountain bikes riding compared to logging in the Tasmanian forests.

Logging allows the activity in the forest with a negative demand for timber providing an income (with the price variable). The deforestation variable shows us that over time, the forest will run out if the logging keeps going on this way.

Alternatively, mountain biking allows a demand of visitors who want to see the scenary. They increase the regional tourism which is good for the community as it involves other businesses around too. The charges paid by visitors and tourists allow an income for the activity which makes it productive over time and great for TAS.

As we stimulate the model, we can see that it is better to have more visitors and more tourists rather than more logging as it will be better over time.

Maylis - Simulation of Derby Mountain bikes riding versus logging

Maylis P

S-Curve + Delay for Bell Curve Showing Erlang Distribution

Generation of Bell Curve from Initial Market through Delay in Pickup of Customers

This provides the beginning of an Erlang distribution model

The Erlang distribution is a two parameter family of continuous probability distributions with support . The two parameters are:

a positive integer 'shape'
a positive real 'rate' ; sometimes the scale , the inverse of the rate is used.

S-Curve + Delay for Bell Curve by Guy Lakeman

Guy Lakeman

6

This is a basic model for use with our lab section. The full BIDE options.

Cēsis līdz 2020

inita

5

This is a basic BIDE (birth, immigration, death, emigration) model. Not all parts are implemented, however Birth and Death are.

Clone of Bio 190: BIDE Model With Carrying Capacity

Andre Henderson

This model has two main components. First is modelling the change in population composition as non-First Nations immigration increases with the opening of new mines in the region. The second is modelling the increasing income disparity between First Nations and non-First Nations as mining jobs are disproportionately gained by non-First Nations workers.

Northern Ontario Demographic and Income Trend Model

Steve Williams

Model

Victor Wong

Systems Zoo model Z308 Forest Dynamics (Bossel, 2007)

Systems Zoo Z308: Forest dynamics

Lisa Belyea

7 months ago

Prey

dx/dt = αx - βxy

The prey reproduces exponentially (αx) unless subject to predation. The rate of predation is the chance (βxy) with which the predators meet and kill the prey.

Predator

dy/dt = δxy - γy

The predator population growth δxy depends on successful kills and the reproduction rate; however, delta is likely be different from beta. The loss rate, an exponential decay, of the predators {\displaystyle \displaystyle \gamma y}γy represents either natural death or emigration

Rabbits and Wolves

Saeed Langarudi

3

Woodland caribou is a species at risk because of northward expansion of resource development activity. Some herds are in dire condition and well below self-sustainability, while others are only moderately below self-sustaining levels. Given limited conservation dollars, what are the most effective conservation actions, and how much money needs to be spent? Which herds should be a priority for conservation efforts? The purpose of this model to provide insight into these difficult conservation questions.

This model was developed by Rob Rempel and Jen Shuter, and was based in part on input from attendees of a modelling workshop ("Modelling the Caribou Questions") held at the 16th North American Caribou Workshop in Thunder Bay, Ontario, May 2016.

Clone of Caribou Conservation Triage-V2

Rob Rempel

This is a basic BIDE (birth, immigration, death, emigration) model. Not all parts are implemented, however Birth and Death are.

Clone of Bio 190: BIDE Model With Carrying Capacity

Heidi Ballew

Woodland caribou is a species at risk because of northward expansion of resource development activity. Some herds are in dire condition and well below self-sustainability, while others are only moderately below self-sustaining levels. Given limited conservation dollars, what are the most effective conservation actions, and how much money needs to be spent? Which herds should be a priority for conservation efforts? The purpose of this model to provide insight into these difficult conservation questions.

This model was developed by Rob Rempel and Jen Shuter at the Centre for Northern Forest Ecosystem Research, and was based in part on input from attendees of a modelling workshop ("Modelling the Caribou Questions") held at the 16th North American Caribou Workshop in Thunder Bay, Ontario, May 2016.

Caribou Conservation Triage-V2

Rob Rempel

4 months ago

This model illustrates predator prey interactions using real-life data of wolf and moose populations on the Isle Royale.

We incorporate logistic growth into the moose dynamics, and we replace the death flow of the moose with a kill rate modeled from the kill rate data found on the Isle Royale website.

I start with these parameters:
Wolf Death Rate = 0.15
Wolf Birth Rate = 0.0187963
Moose Birth Rate = 0.4
Carrying Capacity = 2000
Initial Moose: 563
Initial Wolves: 20

I used RK-4 with step-size 0.1, from 1959 for 60 years.

The moose birth flow is logistic, MBR*M*(1-M/K)
Moose death flow is Kill Rate (in Moose/Year)
Wolf birth flow is WBR*Kill Rate (in Wolves/Year)
Wolf death flow is WDR*W

Clone of Midterm - Square Root Model

Maria E Ruwe

Overview

It is a model simulating logging and adventure tourism (mountain bike riding) competition in Derby, Tasmania. It is a chance for northeast Tasmania to become an exciting, new, world-class product for the mountain bike tourism industry, which drives local economic development.

Simulation borrowed from the Easter Island simulation.

How the model works

l Trees grow; we cut them down because of demand for Timber and sell the logs.

l The mountain bike visits depend on previous experience and suggestions.

l Previous experience and suggestions depend on the number of trees compared to visitors and adventure number of trees and users. Park capacity limits the number of mountain bike trail users.

l The employment opportunity depends on the mountain bike demand and demand for Timber.

Interesting Insights

Mountain biking appears to be unaffected by heavy logging. The visitor experience and numbers are improved by reducing park capacity. The main issue is that any success with the mountain bike park increases visitor numbers. A high timber price is also required to balance the park's popularity. Mountain biking appears to require only a narrow corridor; that is, single-track mountain bike trails are enough. The employment is a measure of the economic acting, a recession or growth trends.

BMA708 Marketing Insights into Big Data_Complex Systems_Mountain bike riding versus logging in Derby, Tasmania

Peili Zhang

Westley, F. R., O. Tjornbo, L. Schultz, P. Olsson, C. Folke, B. Crona and Ö. Bodin. 2013. A theory of transformative agency in linked social-ecological systems. Ecology and Society 18(3): 27. link

Clone of Transformative Agency in Social-Ecological System

Einar Bergmundur

This is a basic BIDE (birth, immigration, death, emigration) model. Not all parts are implemented, however Birth and Death are.

Clone of Bio 190: BIDE Model With Carrying Capacity

Todd Levine

Food Security and Climate Change in East Africa

Stefan Koester

3

This simulation shows how plant, deer and wolf populations impact each other in a deciduous forest ecosystem.

Out 2025 - 4. Plantas, Cervo e Lobo - modelo da internet

Guilherme Caloba

10 6 months ago

There is a concern that Logging has an adverse effect on the experience of tourist mountain bikers looking for nature experiences in Derby, Tasmaina.

This model helps give more insight on the relationship between the forest industry and mountain tourism, showing that despite the changes and increase in logging activities with the aim of generating more income from timber, there can be a balance between mountain tourism and the forest industry.

Complex systems. Mountain bike riding versus logging in Derby, Tasmania

Olude Oluwabusayo Olufunke

This model illustrates predator prey interactions using real-life data of wolf and moose populations on the Isle Royale.

Experiment with adjusting the moose birth-rate to simulate Over-shoot followed by environmental recovery

Royal Island- Resilience

Jeff Schulte

5

Woodland caribou is a species at risk because of northward expansion of resource development activity. Some herds are in dire condition and well below self-sustainability, while others are only moderately below self-sustaining levels. Given limited conservation dollars, what are the most effective conservation actions, and how much money needs to be spent? Which herds should be a priority for conservation efforts? The purpose of this model to provide insight into these difficult conservation questions.

This model was developed by Rob Rempel and Jen Shuter at the Centre for Northern Forest Ecosystem Research, and was based in part on input from attendees of a modelling workshop ("Modelling the Caribou Questions") held at the 16th North American Caribou Workshop in Thunder Bay, Ontario, May 2016.

Testing of Caribou Conservation Sub-Models v2

Rob Rempel

4 months ago