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Spatial and spatial-temporal analysis of grizzly bear movement patterns as related to underlying landscapes across multiple scales.

机译：灰熊运动模式的时空分析与跨多个尺度的基础景观有关。

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摘要

Studying the movements of grizzly bears (Ursus arctos ) in Alberta is imperative for scientifically informed management practices. To properly balance industry requirements with conservation imperatives, it is necessary to understand the spatial and spatial-temporal movement patterns of grizzly bears as they relate to underlying landscape properties. As part of the Foothills Research Institute Grizzly Bear Research Program, this dissertation explored both fine and large-scale movement patterns generated from global positioning system (GPS) radiotelemetry data.;The relationship between level of human activity and grizzly bear movement rate across multiple spatial and temporal scales was studied in detail. Resulting movement patterns of grizzly bears were found to be intrinsically linked to both internal and external factors. Overall, grizzly bears residing in mountain environments were found to have significantly slower movement rates and smaller home ranges sizes when compared to grizzly bears residing in foothills environments. Temporally, movement rates also varied significantly according to season, month, and time of day. These findings have significance for modeling efforts which attempt to replicate grizzly bear spatial and temporal movement patterns across Albertan landscapes.;The use of time sequence graphs aided in differentiating between different types of movement behaviors and allowed for the quantification and assessment of consecutive vector data. Results emphasized that slow movement clusters occurred more often and for longer periods of time when compared to fast travel segments. While some movement-habitat relationships were identified, results were highly individual by bear. Overall models tended to respond the best when working with mountain bears over foothills bears. Results further suggested that vector-based movements should be separated according to type (slow versus fast) for future modeling efforts.;Between 1999 and 2005, grizzly bears were captured and radio-collared across western Alberta. The temporal resolution of GPS data collection had a large impact on the amount of information available for analysis. A significant decrease in available information was demonstrated as time between locations increased. The presence of serial autocorrelation indicated the presence of prolonged movement behavior in fine-scale vector structures. The ability to identify internal vector clusters dramatically decreased as temporal resolution decreased.
机译：对科学知情的管理实践来说，研究阿尔伯塔省的灰熊运动至关重要。为了使工业需求与保护需求保持适当的平衡，有必要了解灰熊的时空运动模式，因为它们与基础景观属性有关。作为山麓研究所灰熊研究计划的一部分，本论文探讨了从全球定位系统（GPS）无线电遥测数据生成的精细和大规模运动模式。；人类活动水平与灰熊在多个空间上的运动速率之间的关系和时间尺度进行了详细研究。发现灰熊的运动方式与内部和外部因素都有内在联系。总体而言，与居住在山麓环境中的灰熊相比，居住在山区环境中的灰熊的活动速度显着降低，房屋范围较小。临时地，移动速度也随季节，月份和一天中的时间而显着变化。这些发现对建模工作具有重要意义，这些工作试图在整个艾伯塔省景观中复制灰熊的时空运动模式。时间序列图的使用有助于区分不同类型的运动行为，并允许量化和评估连续的矢量数据。结果强调，与快速旅行相比，慢速运动发生的频率更高，发生的时间更长。虽然确定了一些运动与栖息地的关系，但结果却因熊而高度个体化。当使用山熊而不是山麓熊时，总体模型倾向于响应最好。结果进一步表明，基于矢量的运动应根据类型（慢速还是快速）进行分离，以进行将来的建模工作。； 1999年至2005年之间，捕获了灰熊，并在整个艾伯塔省西部进行了无线电领。 GPS数据收集的时间分辨率对可用于分析的信息量有很大的影响。随着位置之间时间的增加，可用信息的显着减少。序列自相关的存在表明在精细矢量结构中存在延长的运动行为。随着时间分辨率的降低，识别内部向量簇的能力急剧下降。

著录项

  • 作者

    Carra, Barbara Lynn.;

  • 作者单位

    Wilfrid Laurier University (Canada).;

  • 授予单位 Wilfrid Laurier University (Canada).;
  • 学科 Agriculture Wildlife Conservation.;Physical Geography.;Biology Ecology.
  • 学位 Ph.D.
  • 年度 2010
  • 页码 291 p.
  • 总页数 291
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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