Saw Whet owl- Why is the breeding population nomadic?

 

Give explanations for and implications of any relationships observed. Were the relationships as you expected? Why/why not?
Support your ideas with specific references to the results of your analyses. How do your observations lead to the conclusions you reached?
What are the main sources of uncertainty in interpreting your observations?
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Sample Solution

A time series of abundance estimates of breeding Northern Saw-whet Owls (Aegolius acadicus), and of small mammals from central Ontario, Canada, to assess the numerical response of the owls to small-mammal prey species (Bowman, Badzinski & Brooks, 2009). We found that the finite rate of increase of breeding owls was directly related to estimates of red-backed vole (Myodes gapperi) abundance. Thus, it appeared that the owls were nomadic, and made decisions about where to breed based on vole supply. The owls showed a much weaker response to deer mouse (Peromyscus maniculatus) abundance. Across all years, 55% of variation in owl rate of increase could be uniquely attributed to vole abundance, whereas only 3% could be attributed to mouse abundance. Consistent with the model of nomadism, there was only a weak relationship between the proportion of hatch-year owls caught at fall banding stations, and small-mammal abundance.

The importance of establishing a hierarchy became evident during the planning stage of the outdoor management course for the red team, the coordinators within the team assumed leadership roles but were unable to gain positional power due to the team being a peer group (Pettinger, 2007). The leaders selected had little authority and influence over the group as everyone was perceived to have the same rank, status and occupation, hence the leaders had none of French and Ravens five bases of power (Pettinger, 2007). The result was leaders with no positional power over the group, so could not direct the group with the method of leadership required for the situation. The task had significant constraints, particularly a short time frame and a large group size, for this situation Chelladurai recommends an autocratic leadership style would be most favourable (Chelladurai and Madella, 2006). The leaders attempted an autocratic leadership style, setting individual tasks for the group, however due to the poor leader member relations and lack of positional power the leadership structure quickly became a democracy. The product was an extremely unproductive workforce initially because of the time spent discussing how was best to approach the task. Because of how the leaders were perceived by the group there was little mutual trust, respect or confidence that the leaders were making the correct decisions, and as a result any management style they tried to implement would have been unsuccessful (Pettinger, 2007). Ultimately, if the leaders had analysed their position and the group they would have realised this and chosen a more democratic approach initially the group would have gained trust for the leaders, making future policy implementation easier.

Teamwork
Teamwork plays an essential role within both Fiedler’s Contingency Theory and Chelladurai’s Multi-dimensional model particularly regarding leader-member relations, if the group are familiar and trusting of the leader policy implementation becomes much simpler. Similarly to leadership, understanding and adapting to the situation is key to a leader being able to implement policies that ensure a group work as a team. Teamwork is a product of good leadership, and is again the responsibility of the leader to ensure the group are working successfully together. Highly functioning teams are essential within organisations to increase productivity and member satisfaction, by utilising the talents of all group members effectively within the constraints of the task, personal relationships and the group goals (Pettinger, 2007).
Figure 2: Tuckman’s Model of Group Development (Agile Scrum Guide, 2019)
Tuckman in his Model of Group Development provides easily identifiable stages that a groups performance can be measured against, making it useful for monitoring perform

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