Bears and
Cultural
Connections

Bears and Research
in the Canadian
Rockies

Bears and
Habitat

Bears and
Roads

Bears and
People

Bears and
Science

Bear Paw Print Integrating Science into Management Bear Paw Print
Bears and Science


What does it mean to “manage” bears?
“Bear management usually refers to the process of monitoring populations and the movements, behaviour, and habitat choice of bears in order to make informed decisions about issues that affect bears.” 1


What are some tools of the trade?
Managing bears also means managing bear habitat, and the developments and activities of people in it. Tools of the trade include:

  • habitat restoration: implementing prescribed burn or let burn policies to restore high quality habitats, managing for habitat effectiveness targets, etc.
  • involving “public” in land-use planning
  • establishing guidelines for industry: timber harvest guidelines, policies for industrial camps and employees etc.
  • hunting management: setting bear harvest quotas, disallowing hunting in populations that cannot sustain it, etc.
  • human recreation management:  seasonal/temporary trail closures, re-routing trails to avoid prime bear habitats, use quotas, concentrating human-use on established trails, closing/decommissioning roads that provide access into bear habitat etc.
  • education: educating residents, visitors and workers in areas occupied by bears; target groups such as hunters, back-country recreationists and etc. 
  • bear-human conflict management: educating people, food and garbage-management, aversive conditioning, translocation, etc.


How can science influence management and policy?
Herrero et al summarized key factors that contributed to the successful integration of research conducted by the Eastern Slopes Grizzly Bear Project into bear management and policy in Banff National Park. These factors include:

  • employing a multi-stakeholder and interagency approach to research
  • solid public understanding of the issue was established before discussing solutions
  • key decision makers were directly involved in developing the Banff National Park management plan; they understood the issues and were able to contribute solutions
  • the scientific community provided specific targets and goals in a way that could be incorporated into policy
  • scientists were persistent and provided information on a timely basis
    (Herrero et al 1998)

With regard to the last point, the authors emphasized that scientists who hope to influence policy and management must be actively involved in the decision making process:  

“Scientists cannot be passive players, hoping that by publishing research results they will influence decisions, or by writing the occasional letter, or by talking to managers through the media, or pounding the table at public meetings. Scientists need to adapt their behaviour to the process of information gathering or decision making that is being used.” 2
 

Science and adaptive management
“Active adaptive management proposes application of different management tactics in time and space, essentially as experiments, to develop a better understanding of the behaviour of the system.” 3

In recent years, much effort has been directed towards the construction of scientific models that attempt to simulate some aspect(s) of ecosystem function. While such models are constrained by limitations in data and by the enormous complexity of natural systems, they can be a valuable tool when applied in the context of adaptive management.

Boyce explains this point with respect to Population Viability Analysis modeling (PVA). PVA attempts to model the fluctuations in an animal population that result from human-induced or non human-induced changes in their environment over time. Boyce states that “simulation models [such as PVA] can be used to generate hypotheses of how we expect the system to respond to perturbations or management manipulations”, and that monitoring of the consequences of these manipulations “provides data to validate and/or refine” the model. 4

In other words, managers and scientists can use models to predict the response of a natural system or population to a proposed management action. Once they have actually applied this management action, they can monitor the system’s or population’s actual response and compare it to the response that was predicted by the model. If they are the same, the model is validated; if they are different, the information can be used to refine and improve the model for future applications.


Selected examples


Human-use management at Lake O’Hara, Yoho National Park
In the Lake O’Hara area of Yoho National Park, a series of bear-human conflicts led to the initiation of a three-year socio-ecological research project in 1993. The project incorporated ecological and social data in a computer-based decision support model “to provide recommendations to park management on methods to resolve the land allocation issues between grizzly bears and humans.” 5  Seasonal and indeterminate trail closures, as well as voluntary limitations on trail use are some of the management actions resulting directly from this research.

Establishing ecological goals in Banff National Park
The 1997 Banff National Park Management Plan contains specific objectives that were developed in response to grizzly bear research conducted by the Eastern Slopes Grizzly Bear Project as part of the Banff-Bow Valley Study process. These include:

  • reducing the number of grizzly bears removed or killed as a result of human activity to less than 1% of the population annually
  • establishment of habitat effectiveness targets for each CMU [Carnivore Management Unit] based on the potential for improved habitat effectiveness and visitor experience considerations.
    (Source: Herrero and Gibeau 1999 and Parks Canada 1997)

Grizzly bear harvest management in British Columbia
In 1989, the British Columbia provincial government conducted a review of the grizzly bear harvest. This research showed that between 1984-1988:

  • 52 of 118 management units had total kills that exceeded the annual allowable harvest.
  • overharvests of females had occurred in an number of management units.
  • area-concentrated kills – especially of females – had occurred.

These results led to the adoption of the following management principles:

  • maximum provincial harvest levels should be ~4% of the total population, including kills from all sources. 
  • maximum sex ratio in the harvest should be no greater than 1 female to 2 males.
  • the unreported kill (natural mortality, accidental, illegal) is included in estimates of the total kill and standardized at 50% of the legal kill unless documentation indicates otherwise.
  • hunting seasons are not permitted in management units that support 25 or less grizzly bears unless such populations are contiguous with larger populations.

(Source for all: Ministry of Environment, Lands and Parks, British Columbia 1995)

Footnotes and Sources Cited

Bears: Year 2000 and Beyond Bears: Imagination and Reality
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