Dynamic surface water distributions influence wetland connectivity within a highly modified interior landscape
| Autor: | Blake A. Barbaree, Nathan Elliott, Gary W. Page, Danica Schaffer-Smith, Mark D. Reynolds, Matthew E. Reiter, Catherine M. Hickey |
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| Rok vydání: | 2018 |
| Předmět: |
0106 biological sciences
geography geography.geographical_feature_category food.ingredient Resource (biology) 010504 meteorology & atmospheric sciences Ecology Flood myth business.industry Geography Planning and Development Wetland 010603 evolutionary biology 01 natural sciences Calidris food Habitat Environmental science Physical geography Landscape ecology business Surface water Landscape planning 0105 earth and related environmental sciences Nature and Landscape Conservation |
| Zdroj: | Landscape Ecology. 33:829-844 |
| ISSN: | 1572-9761 0921-2973 |
| Popis: | Animal movements are inherently linked to landscape structure. Understanding this relationship for highly-mobile species requires documenting their responses to spatiotemporal variability of resources. To that end, characterizing movement behaviors and resource distributions using the principles of habitat connectivity facilitates coordinated landscape planning efforts within highly modified landscapes. We tracked locations and movements for 156 dunlin (Calidris alpina) and 109 long-billed dowitchers (Limnodromus scolopaceus) overwintering in two regions with distinct water distributions in California’s Central Valley. We then compared residency rates, functional connectivity to other regions, and associations between movement distances and average habitat availability and structural connectivity of habitat at multiple temporal and spatial scales. A widespread yet highly variable regional water distribution was associated with lower residency rates and substantially higher functional connectivity to nearby regions when compared to a stable regional water distribution characterized by a large, contiguous wetland complex. Longer movements were associated with decreasing average availability and spatial aggregation of surface water. Movement models suggested shorebirds primarily responded to habitat availability at smaller scales ( |
| Databáze: | OpenAIRE |
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