Reports and documents by IAE staff.  

Common ground and controversy in native plant restoration: the SOMS debate, source distance, plant selections, and a restoration- oriented definition of native

Thomas N. Kaye   2001

Propagation and planting of native plants for habitat restoration is a multi-faceted process. There are many issues over which there is general agreement among restorationists, but there are a number of subjects that cause disagreement. For example, restorationists often agree that native plants should be emphasized, but disagree over where seeds or transplants should come […]

Climate change vulnerability assessment for West Eugene Wetland species

Thomas N. Kaye, Ian Pfingsten, Trevor Taylor and Emily Steel   2013

Local climate is one important factor that controls species distributions,range, phenology, and ability to compete with non-native species, among many effects. To preserve rare grassland species, manage and restore grassland habitat, and maintain communities that are resilient to climate change in the Pacific Northwest (PNW), land managers and restoration practitioners in the Willamette Valley (WV) need […]

Mowing, mulching and seeding to control false-brome on the Eugene District, BLM, Oregon

Matt Blakeley-Smith and Thomas N. Kaye   2008

False-brome (Brachypodium sylvaticum) is an invasive perennial grass which is quickly spreading through the Pacific Northwest. Naturalized populations of False-brome have been observed in the Willamette Valley as early as the 1960’s. Recently, new populations have been observed in Washington and California. It is capable of completely dominating understory and open habitats to the exclusion of […]

Dispersal behavior and habitat variation of Taylor’s checkerspot butterfly

Thomas N. Kaye, et al.   2011

This project is intended to provide information about the Taylor’s checkerspot butterfly (Euphydryas editha taylori) habitat and dispersal behavior to support management of existing populations, habitat connectivity, reserve design, and overall recovery. This project addresses two project objectives, measurements of 1. dispersal behavior and 2. habitat characteristics. To meet objective 1, dispersal behavior, we conducted observations at one population in […]

Effects of cattle grazing, insect interactions, and population ecology of Snake River goldenweed (Haplopappus rediatus)

Thomas N. Kaye   2002

Background Snake River goldenweed (Haplopappus radiatus) is a rare plant of eastern Oregon and adjacent western Idaho. The species is listed as endangered by the State of Oregon Department of Agriculture and the Oregon Natural Heritage Program. It is considered a Sensitive Species by the Bureau of Land Management. The species occurs in arid shrub-steppe […]

Propagation of endangered species: Variable germination of pink sandverbena from Pacific coast beaches

Thomas N. Kaye   1999

Pink sandverbena (Abronia umbellata ssp. breviflora) is an endangered plant of Pacific Coast beaches. Restoration efforts have focused on the development of seed germination and field propagation techniques. Germination in the laboratory was highest when seeds were removed from the fruit and received alternating temperatures (20 C/30 C) and photoperiods. Benefits from cold stratification differed strongly from […]

Seeding and transplanting rare Willamette Valley prairie plants for population restoration

Thomas N. Kaye and Angela Brandt   2005

Prairies and oak savannah habitats once dominated the valleys and foothills in western Oregon and southwestern Washington. Fire suppression, invasive species, and habitat loss have substantially reduced the quantity and quality of this habitat. Several plant species of this ecosystem are considered rare, threatened or endangered. Their survival may depend reintroduction and population augmentation, as […]

Botanical survey of Lupine Meadows

Denise Giles-Johnson, Rachel Newton, Geoff Gardner, and Andrea Thorpe   2011

Lupine Meadows is a 58-acre property owned by the Greenbelt Land Trust (GLT).  The GLT aims to protect, restore and manage rare native habitats and rare species to provide low-impact education, recreation and ecological research. In addition, the GLT desires to use Lupine Meadows in partnership with public agencies and private landowners and organizations to […]

West Eugene Wetlands habitat monitoring at Long Tom, Oxbow West, Speedway, and Vinci

Erin Gray   2014

This document summarizes habitat monitoring in the West Eugene Wetlands on land managed by the Bureau of Land Management Eugene District under a long term (10 year) land management implementation schedule, developed in 2005. In 2014, we monitored Long Tom, Oxbow West, Speedway, and Vinci to assess whether they were within the habitat targets for Threatened and Endangered […]

West Eugene Wetlands habitat sampling at Fir Butte, Oxbow West, and Vinci

Erin Gray and Scott Orr   2013

This document summarizes habitat monitoring in the West Eugene Wetlands on land managed by the BLM Eugene District. In 2013, we monitored Fir Butte, Oxbow West, and Vinci to assess whether they were within the habitat targets for Threatened and Endangered species. Monitoring in 2013 occurred in May, which was earlier than in previous years […]