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Full-Text Articles in Natural Resources Management and Policy
The Distribution And Reproductive Success Of The Western Snowy Plover Along The Oregon Coast - 2008, David J. Lauten, Kathleen J. Castelein, David C. Bailey, Travis Lewis, Eleanor P. Gaines
The Distribution And Reproductive Success Of The Western Snowy Plover Along The Oregon Coast - 2008, David J. Lauten, Kathleen J. Castelein, David C. Bailey, Travis Lewis, Eleanor P. Gaines
Institute for Natural Resources Publications
From 1 April – 24 September 2008, we monitored the distribution, abundance and productivity of the federally Threatened Western Snowy Plover (Charadrius alexandrinus nivosus) along the Oregon coast. From north to south, we surveyed and monitored plover activity at Sutton Beach, Siltcoos River estuary, the Dunes Overlook, North Tahkenitch Creek, Tenmile Creek, Coos Bay North Spit, Bandon Beach, and New River. Our objectives for the Oregon coastal population in 2008 were to: 1) estimate the size of the adult Snowy Plover population, 2) locate plover nests, 3) continue selected use of miniexclosures (MEs) to protect nests from predators …
Nutrient Uptake By Intact And Disturbed Roots Of Loblolly Pine Seedlings, Melissa S. Lucash, Ruth D. Yanai, J. Devereux Joslin
Nutrient Uptake By Intact And Disturbed Roots Of Loblolly Pine Seedlings, Melissa S. Lucash, Ruth D. Yanai, J. Devereux Joslin
Environmental Science and Management Faculty Publications and Presentations
Most measurements of nutrient uptake use either hydroponic systems or soil-grown roots that have been disturbed by excavation. The first objective of this study was to test how root excavation affects nitrate uptake. Rates of NO3− uptake by mycorrhizal loblolly pine (Pinus taeda L.) seedlings were measured in intact sand-filled columns, hydroponics, and disturbed sand-filled columns. Total nitrate uptake in intact sand-filled columns was higher than in disturbed columns, indicating that disturbance lowers uptake. Transferring plants from the sand-filled columns to hydroponics had little effect on NO3− uptake beyond delaying uptake for an hour. The second objective of this study …