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Full-Text Articles in Life Sciences

Seedling Emergence Patterns Of Six Restoration Species In Soils From Two Big Sagebrush Plant Communities, Lacey E. Wilder, Kari E. Veblen, Eugene W. Schupp, Thomas A. Monaco Jul 2019

Seedling Emergence Patterns Of Six Restoration Species In Soils From Two Big Sagebrush Plant Communities, Lacey E. Wilder, Kari E. Veblen, Eugene W. Schupp, Thomas A. Monaco

Ecology Center Publications

Despite the critical need to improve degraded herbaceous understory conditions in many semiarid ecosystems, the influence of soil properties on seedling emergence of species seeded in shrubland plant communities is largely unexplored. We evaluated emergence patterns of 6 restoration species in soils from wyomingensis (i.e., Wyoming big sagebrush, Artemisia tridentata ssp. wyomingensis [Beetle & A. Young] S.L. Welsh) and vaseyana (i.e., mountain big sagebrush, A. t. ssp. vaseyana [Rydb.] Beetle) plant communities that differed in soil texture, soil organic matter content, and soil water-holding capacity. We conducted 2 separate experiments that regularly wetted soils to standardized soil water potentials (i.e., …


Contrasting Development Of Canopy Structure And Primary Production In Planted And Naturally Regenerated Red Pine Forests, Laura J. Hickey, Jeff Atkins, Robert T. Fahey, Mark R. Kreider, Shea B. Wales, Christopher M. Gough Jul 2019

Contrasting Development Of Canopy Structure And Primary Production In Planted And Naturally Regenerated Red Pine Forests, Laura J. Hickey, Jeff Atkins, Robert T. Fahey, Mark R. Kreider, Shea B. Wales, Christopher M. Gough

Ecology Center Publications

Globally, planted forests are rapidly replacing naturally regenerated stands but the implications for canopy structure, carbon (C) storage, and the linkages between the two are unclear. We investigated the successional dynamics, interlinkages and mechanistic relationships between wood net primary production (NPPw) and canopy structure in planted and naturally regenerated red pine (Pinus resinosa Sol. ex Aiton) stands spanning ≥ 45 years of development. We focused our canopy structural analysis on leaf area index (LAI) and a spatially integrative, terrestrial LiDAR-based complexity measure, canopy rugosity, which is positively correlated with NPPw in several naturally regenerated forests, but …