Open Access. Powered by Scholars. Published by Universities.®
Physical Sciences and Mathematics Commons™
Open Access. Powered by Scholars. Published by Universities.®
- Discipline
- Keyword
-
- Bear predation (1)
- Biogreography (1)
- Blue carbon (1)
- Botany (1)
- Bristlecone pine (1)
-
- Carbon sequestration (1)
- Fertilization (1)
- GIS (1)
- Georeferencing (1)
- Herbarium records (1)
- Marine-derived nutrients (1)
- Moisture-sensitive growth response (1)
- Museum collections (1)
- Nitrogen (1)
- Salmon (1)
- Seagrass (1)
- Species Distribution Models (1)
- Stable isotopes (1)
- Tree growth (1)
- Tree-ring chronologies (1)
- White spruce (1)
- Zostera marina (1)
Articles 1 - 4 of 4
Full-Text Articles in Physical Sciences and Mathematics
Spatiotemporal Variability In The Climate Growth Response Of High Elevation Bristlecone Pine In The White Mountains Of California, Andrew Godard Bunn, Matthew W. Salzer, Kevin J. Anchukaitis, Jamis M. Bruening, Malcolm K. Hughes
Spatiotemporal Variability In The Climate Growth Response Of High Elevation Bristlecone Pine In The White Mountains Of California, Andrew Godard Bunn, Matthew W. Salzer, Kevin J. Anchukaitis, Jamis M. Bruening, Malcolm K. Hughes
Environmental Sciences Faculty and Staff Publications
Tree-ring chronologies from bristlecone pine (Pinus longaeva) are a unique proxy used to understand climate variability over the middle to late Holocene. The annual rings from trees growing toward the species’ lower elevational range are sensitive to precipitation variability. Interpretation of the ring-width signal at the upper forest border has been more difficult. We evaluate differences in climate induced by topography (topoclimate) to better understand the dual signals of temperature and moisture. We unmix signals from trees growing at and near the upper forest border based on the seasonal mean temperature (SMT) experienced by each tree. We find that trees …
A Multidecade Experiment Shows That Fertilization By Salmon Carcasses Enhanced Tree Growth In The Riparian Zone, Thomas P. Quinn, Helfield M. James, Catherine S. Austin, Rachel A. Hovel, Andrew Godard Bunn
A Multidecade Experiment Shows That Fertilization By Salmon Carcasses Enhanced Tree Growth In The Riparian Zone, Thomas P. Quinn, Helfield M. James, Catherine S. Austin, Rachel A. Hovel, Andrew Godard Bunn
Environmental Sciences Faculty and Staff Publications
As they return to spawn and die in their natal streams, anadromous, semelparous fishes such as Pacific salmon import marine‐derived nutrients to otherwise nutrient‐poor freshwater and riparian ecosystems. Diverse organisms exploit this resource, and previous studies have indicated that riparian tree growth may be enhanced by such marine‐derived nutrients. However, these studies were largely inferential and did not account for all factors affecting tree growth. As an experimental test of the contribution of carcasses to tree growth, for 20 yr, we systematically deposited all sockeye salmon (Oncorhynchus nerka) carcasses (217,055 individual salmon) in the riparian zone on one …
Carbon Sequestration In A Pacific Northwest Eelgrass (Zostera Marina) Meadow, Katrina L. Poppe, John M. Rybczyk
Carbon Sequestration In A Pacific Northwest Eelgrass (Zostera Marina) Meadow, Katrina L. Poppe, John M. Rybczyk
Environmental Sciences Faculty and Staff Publications
Coastal wetlands are known to be efficient carbon sinks due to high rates of primary productivity, carbon burial by mineral sediments, and low rates of sediment organic matter decomposition. Of the three coastal wetland types: tidal marshes, tidal forests, and seagrass meadows, carbon burial by seagrasses is relatively under-studied, and reported rates range widely from 45 to 190 g C m-2 yr-1. Additionally, most of these seagrass rates are biased toward tropical and subtropical species, particularly Posidonia oceanica, with few focused on Zostera marina, the most widespread species in the northern hemisphere. We measured sediment …
Why Georeferencing Matters: Introducing A Practical Protocol To Prepare Species Occurrence Records For Spatial Analysis, Trevor D.S. Bloom, Aquila Flower, Eric G. Dechaine
Why Georeferencing Matters: Introducing A Practical Protocol To Prepare Species Occurrence Records For Spatial Analysis, Trevor D.S. Bloom, Aquila Flower, Eric G. Dechaine
Environmental Sciences Faculty and Staff Publications
Species Distribution Models (SDMs) are widely used to understand environmental controls on species’ ranges and to forecast species range shifts in response to climatic changes. The quality of input data is crucial determinant of the model’s accuracy. While museum records can be useful sources of presence data for many species, they do not always include accurate geographic coordinates. Therefore, actual locations must be verified through the process of georeferencing. We present a practical, standardized manual georeferencing method (the Spatial Analysis Georeferencing Accuracy (SAGA) protocol) to classify the spatial resolution of museum records specifically for building improved SDMs. We used the …