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Grizzly Bear Activity Patterns

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The purpose of this research study is to recognize the influences of the factors that affect daily and annual activity patterns of a species, in this case, the bear. This will help provide understandings to the challenges that face these individuals, particularly when climate shifts, and therefore this study is important in conservation. It is important to study the rhythms of certain species with respect to their environment because they are assumed to enhance the survival and reproductive fitness of the individuals. Connecting the bears’ food intake to their behavior and population ecology continues to be part of the foundation of good grizzly bear management and it also contributes to the relationship of the weather conditions with the sufficient …show more content…
The goal of the project was to analyze how the bears’ activity level changed in relation to foraging, when the high ambient temperature changed. The findings were very clear, in that they had an average activity range of 13.41 ± 0.15 h d-1 (female) and 12.84 ± 0.19 hd -1 (male). And in order to test each hypothesis they implemented the variable conditions and compared how the activity changed. The data concluded that the bears increased their level of activity and duration of active bouts when foraging on berries, supporting their hypothesis. While the temperature did not affect their activity, due to cofounding variables, which they clearly addressed in the analysis. An incorrect assumption that the researchers had was that weather, and in particular high temperature has a strong effect on activity levels and daily activity patterns on mammals. They used this assumption to also predict that bears would follow this pattern and become less active at higher temperatures. The authors assumed that the bears would be deterred to be highly active at higher temperatures, as it would be harder to dissipate their body …show more content…
The first confound was the effects of developed areas on the bears, their activity levels could potentially be altered by proximity to humans. They counteracted this by excluding data from bears for days where the location tracking showed they were within 500 meters of a developed area. The amount of day light associated with each season could be a factor in grizzly bear's activity levels. To account for this, researchers excluded weeks that overlapped seasonal boundaries and then in their linear modeling they used qualitative daylight information to include this factor. They also excluded activity levels during hibernation times. Dates before May 22 and after October 22 were also

excluded during statistical analysis because this range the start and end of the bear's active season.

After reading this study, we were left with several questions about not only grizzly bear behavior but about how this study could potentially be used as a foundation for a new study. This study touched on grizzlies that predominantly hunt larger game and the nocturnal behaviors associated. The study referenced showed that grizzlies are not greatly effected by switching from diurnal to nocturnal. The study here did not evaluate hunting habits at all, this lead to questions related to tracking hunting versus foraging periods

Our proposed alternative hypothesis is that in higher

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