Riverscape organisation, anthropogenic disturbances and salmonid habitat

鲑鱼渔业在加拿大沿着两个海岸的区域经济中发挥着作用，而鳟鱼垂钓是加拿大内陆重要的休闲产业。大量的资金目前花在淡水鲑鱼（鲑鱼，鳟鱼）栖息地的恢复和管理，在水坝的威胁下，不当的林业和农场的做法，公路建设等，以尽量减少栖息地退化或更有效的恢复，重要的是要了解最具生产力或最敏感的栖息地位于沿着。本研究建议应用河流景观结构的新型模型（沉积链模型）来更好地回答这些问题。淡水中的鲑鱼产量严重依赖于流域内不同溪流栖息地类型的复杂并列：湖泊、池浅滩卵石河段、卵石快速河段等;确保在一定距离内，个体鱼可以在生长时游泳，清洁，砾石-鹅卵石达到繁殖和鱼苗饲养，巨石丰富的部分饲养较老的鲑鱼幼鱼，最后是热避难所和后水道区，使生存通过夏季的热应力和冬季与冰有关的应力时期。拟议的研究计划使用新的地理信息学，航空照片和现场技术，了解鲑鱼栖息地的地貌控制作用在这些空间尺度和应用这些知识的栖息地管理和保护。一个主要的研究重点是测试关于河景结构细节对鲑鱼丰度影响的假设（沿着山谷的“沉积链”的长度和组织，基岩峡谷的间隔和分布，巨石丰富区， 冷水支流等）。

Salmon fisheries play a role in the regional economies along both coasts of Canada while trout angling is an important recreational industry in the Canadian interior. Substantial funds are currently spent on the rehabilitation and management of freshwater salmonid (salmon, trout) habitat, under threat from damming, improper forestry and farm practices, highway construction, etc.  To minimize habitat degradation or to be more effective in rehabilitation, it is important to understand where the most productive or most sensitive habitats  are located along a river. This research proposes to apply novel models of river landscape structure (sedimentary link models) to better answer these questions.Salmon production in freshwaters can critically depend on a complex juxtaposition of different stream habitat types within a  watershed: lakes, pool-riffle cobble reaches, boulder rapid reaches etc.; insuring, within distances that individual fish can  swim as they grow, clean, gravel-cobble reaches for reproduction and fry rearing, boulder-rich sections for rearing of older salmon parr, and finally thermal refugia and backchannel zones that allow survival through periods of heat stress in summer and ice-related stress in winter. The proposed research program uses novel geomatics, air photo and field techniques to understand the geomorphic controls on salmonid habitat acting across these spatial scales and applying this knowledge to habitat management and conservation. A major research focus is to test hypotheses concerning the effects on salmon abundances of details of riverscape structure (length  and organisation of 'sedimentary links' along valleys, spacing and distribution of bedrock canyons, of boulder rich zones, of   cool water tributaries, etc).