Healthy soils are the basis for sustainable gardening. Although agricultural soils have been extensively studied, we know surprisingly little about residential and community garden soils. We studied the physical, biological, and chemical characteristics of soils from 67 vegetable garden in the Willamette Valley, and compared these to published recommendations for...
This guide is designed as a public tool, and an accompaniment to the online iNaturalist guide Summer Garden Bees of Portland. You can use this link to access it: https://beav.es/Tdj.
The 67 bee species included in this guide were found in a three-year study of garden bee communities active during...
The magazine of the OSU College of Forestry. FOCUS is published by Oregon State University College of Forestry to keep alumni, friends, faculty, staff and students informed about the college and its many events, activities and programs.
Monitoring is usually among the first actions taken to help inform recovery planning for declining species, but these data are rarely used formally to inform conservation decision making. For example, Central Valley Chinook salmon were once abundant, but anthropogenic activities have led to widespread habitat loss and degradation resulting in...
A major challenge in ecology is disentangling interactions of non-native, potentially invasive species on native species. Conditional two-species occupancy models examine the effects of dominant species (e.g., non-native) on subordinate species (e.g., native) while considering the possibility that occupancy of one species may affect occupancy and/ or detection of the...
Objective:
In the U.S. Pacific Northwest, climate change is increasing air temperatures, decreasing warm season (April–September) streamflow, and increasing cool season (October–March) streamflow. Warmer water temperatures may alter conditions for migratory coldwater fishes like the Bull Trout Salvelinus confluentus. Consequently, an understanding of Bull Trout migration and survival is critical...
Introduced species may exhibit variations in their preferred climatic niches between their native and introduced ranges, which can have important implications for the transferability of distribution models. In the Himalayan ecoregion, little is known about the geographic distribution and climatic niche overlap between native and introduced cold-water species. Here, we...
Tropical instability waves (TIWs) are identified in three multiyear equatorial mooring records in Pacific and Atlantic cold tongues to evaluate how TIWs modulate turbulence. At 0◦ , 140 ◦W in the Pacific, TIWs are present in 43% of observations, and are associ ated with elevated vertical shear and a 40%...