Global amphibian declines have been attributed to numerous and often synergistic causes, such as invasive species, pathogens, and ultraviolet-B (UV-B) radiation. The effects of these stressors are context dependent and can vary with location, species, and populations. As sensitivity to UV-B has shown inconsistencies across amphibian taxa, it can be...
Wetland restoration success in attaining wildlife conservation goals can be confounded by the presence of multiple biological invaders. Wetland management activities typically target invasive plants, but bottom-up responses of higher trophic levels in novel communities are difficult to predict. We surveyed plant and amphibian assemblages at 26 sites enrolled in...
It is well known that in-stream large wood affects river channel shape, sediment deposits, stream flow, and available habitat for aquatic species. However, less is known about how wildlife interact with this large wood. Previous research has shown that small mammals and birds utilize woody debris in river channels for...
The development of new technologies in science is a balance between existence
and use. There are three versions of this duality – something is built and users come,
something is built and users don’t come, and, finally, potential users show up but the
ballpark has not yet been built. In...
As a child of two Khmer Rouge refugees, the Khmer Rouge genocide serves as the prologue of my family’s story. The Khmer Rouge genocide took place in Cambodia in 1975-1979 after a successful coup led by the Communist Party of Kampuchea (CPK) (Dy 2007, 2). In an attempt to create...
Little is known on the importance of riparian areas to birds near small headwater streams in mesic forests. Progress towards understanding limiting factors that affect bird populations has been difficult because of lack of information beyond the breeding period. I compared bird assemblages between headwater riparian and upland areas throughout...
The abundance of algal species and their parasites
was monitored weekly for two years in a sewage lagoon
at the Corvallis Airport, Oregon. During the cooler
months, Euglena species were dominant followed by a
Chlamydomonas assemblage in the spring and a
predominantly Scenedesmus assemblage in the summer and
fall. Parasites...
Mutualistic associations between cnidarians, such as corals, and photosynthetic
dinoflagellate algae provide the trophic and structural foundation of coral reef
ecosystems. In many cases, this intracellular mutualism is highly specific and must be
established anew for each generation of host corals. The ability to maintain partner
specificity across generations implies...
Confluence is a newsletter of Oregon Sea Grant promoting discovery, understanding, and resilience for Oregon coastal communities and ecosystems. Articles feature the supported research and events of the program.