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Articles 1265221 - 1265250 of 5161292
Full-Text Articles in Entire DC Network
Volume 83, Fall 2009, Number 4
Volume 83, Summer 2009, Number 3
Volume 83, Spring 2009, Number 2
Volume 83, Winter 2009, Number 1
Recommendations For Ivy Management In Forest Park, Eric P. Butler, Carole Hardy, Brandon M. Hadzinsky
Recommendations For Ivy Management In Forest Park, Eric P. Butler, Carole Hardy, Brandon M. Hadzinsky
Urban Ecosystem Research Consortium of Portland/Vancouver
Forest Park faces numerous major ecological stresses, demonstrated in part by the significant lack of late-successional tree recruitment and invasion by ivy (Hedera spp.) and other invasive plant species. While ivy removal and revegetation has been a focus of restoration efforts, limited resources and unanswered questions about the impact of ivy and ivy removal on this ecosystem present an opportunity for re-evaluating restoration goals and techniques. Leveraging past and current ecological research on Forest Park and similar urban ecosystems, we evaluate Forest Park’s current ecological health compared to the restoration goals of managing to an old-growth reference site, the role …
Assessing The Relationship Between Floral Blossom Density, Type And Floral Visitation Activity Of Bees In Southeast Portland Involving Community Scientists, Hailey Wallace, Dr. Marion Dresner
Assessing The Relationship Between Floral Blossom Density, Type And Floral Visitation Activity Of Bees In Southeast Portland Involving Community Scientists, Hailey Wallace, Dr. Marion Dresner
Urban Ecosystem Research Consortium of Portland/Vancouver
Pollinator populations have been declining over the past few decades; scientists are unsure of the cause of decline but have attributed it primarily to habitat fragmentation, pesticide use, and climate warming (Potts et al., 2010 - Trends in Ecology & Evolution 25: 345-353) which are all exacerbated in cities. The loss of global pollinators would be devastating to the economic market; 35% of global crop-based food production requires pollination services (Brown et al., 2009 - Apidologie 40: 410-416). Due to the threat of losing our pollinators, there are many conservation actions such as “pollinator friendly” areas being constructed in cities …
The Columbia Slough Sediment Program: Reducing Contamination And Long-Term Risk In Portland’S Hidden Gem, Kevin Huniu
The Columbia Slough Sediment Program: Reducing Contamination And Long-Term Risk In Portland’S Hidden Gem, Kevin Huniu
Urban Ecosystem Research Consortium of Portland/Vancouver
The Columbia Slough is a 19-mile urban waterway with about a dozen miles of side channels. Historically, the watershed contained a vast system of side channels, lakes, ponds, wetlands, and numerous streams covering the floodplain of the Columbia River between the mouths of the Willamette and Sandy Rivers. The watershed and waterways have been drastically altered over the years and have been heavily degraded by urbanization, including agricultural, residential, and industrial development, flood control activities, and road and culvert construction. The waterway provides wildlife and essential fish habitat for salmonids, excellent opportunities for recreational paddling and birding, and is used …
Survey Of The Native Bees Of Portland State University, Stefanie Steele, Erica Rudolph, Susan Masta
Survey Of The Native Bees Of Portland State University, Stefanie Steele, Erica Rudolph, Susan Masta
Urban Ecosystem Research Consortium of Portland/Vancouver
We surveyed the bee species present on Portland State University’s campus, with a focus on the Community Orchard, over the course of two years. We found a wide diversity of bees present, representing five different families. Our survey allowed us to make the first checklist of bee species present in this highly urbanized landscape in the core of Portland. We also tracked the seasonality and floral preferences of the different species, to better document the life histories of taxa for which little prior data existed. Our data allow us to make recommendations to property owners and managers on how to …
Documenting Change In An Urban Forest Restoration Project, Janelle St. Pierre, Adriana Escobedo-Land
Documenting Change In An Urban Forest Restoration Project, Janelle St. Pierre, Adriana Escobedo-Land
Urban Ecosystem Research Consortium of Portland/Vancouver
The West Willamette Restoration Partnership is working to enhance connected natural areas, on both public and private property, in SW Portland to increase functionality as a wildlife corridor with connections to Forest Park to the north and Tryon Creek State Natural Area to the south. To manage the invasive vegetation currently found within strategically selected restoration sites in the Westside Wildlife Corridor, a variety of treatments were conducted and monitored between 2016-2018. Ground ivy (Hedera sp.), canopy weeds (including Clematis vitalba, Hedera sp.), and weedy tree treatments were conducted. Treatments included manual pulling, herbicide treatments, and plantings of native trees …
Get Connected: Lessons Shared From The Pnw-Garlic Mustard Working Group, Michelle Delepine
Get Connected: Lessons Shared From The Pnw-Garlic Mustard Working Group, Michelle Delepine
Urban Ecosystem Research Consortium of Portland/Vancouver
Garlic mustard (Alliaria petiolata) is an ODA-listed class B noxious weed and threatens many types of ecosystems west of the Cascade Range, as well as riparian corridors east of the Cascades. Starting in 2014, a self-organized collaboration called the Pacific Northwest Garlic Mustard Working Group has brought together invasive plant managers from across Oregon, Washington, and British Columbia to share observations, best management practices, prevention techniques, survey methodologies and outreach strategies across the region. This has resulted in developing shared outreach and prevention products, a cross-jurisdictional Integrated Pest Management (IPM) strategy, regional maps, and a collaborative understanding of management practices …
Whatever Makes You Happy, Gina Willner-Pardo
Whatever Makes You Happy, Gina Willner-Pardo
Mad River Review
Gina Willner-Pardo has written short stories published in Berkeley Fiction Review, Bluestem, Pleiades, Five on the Fifth, Origins Journal, The South Carolina Review,Streetlight Magazine, Summerset Review, and Whetstone, which awarded her story “Accident” the John Patrick McGrath Memorial Award (1999). She has also written seventeen books for children, all published by Clarion or Albert Whitman. Gina’s book Figuring Out Frances won the 1999 Josette Frank Award, presented by the Bank Street College of Education, to honor a book of “outstanding literary merit in which children or young people deal in a positive and realistic way with …
4 Flashes, Mitchell Krockmalnik Grabois
4 Flashes, Mitchell Krockmalnik Grabois
Mad River Review
MITCHELL KROCKMALNIK GRABOIS‘ poems and fictions have appeared in hundreds of literary magazines in the U.S. and abroad. He is a regular contributor to The Prague Revue, and has been thrice nominated for the Pushcart Prize. His novel, Two-Headed Dog, based on his work as a clinical psychologist in a state hospital, is available for 99 cents from Kindle and Nook, or as a print edition.
Airing Out The Dogs, Jim Daniels
Airing Out The Dogs, Jim Daniels
Mad River Review
Jim Daniels' recent poetry books include Rowing Inland and Street Calligraphy, 2017, and The Middle Ages, 2018. He is the author of five collections of fiction, four produced screenplays, and has edited five anthologies, including Challenges to the Dream: The Best of the Martin Luther King, Jr. Day Writing Awards. His next book of short fiction, The Perp Walk, will be published by Michigan State University Press in 2019. He is the Thomas S. Baker University Professor of English at Carnegie Mellon.
Untitled Haiku, Andrew S. Ellis
Untitled Haiku, Andrew S. Ellis
Mad River Review
Andrew S. Ellis is annoying, infuriating, agitating, provoking, engaging, encouraging, and all the things that make a person interesting. His poetry and short fiction has appeared or is forthcoming in Teen Ink, the Ohio Poetry Association Common Threads, and Ink, Sweat & Tears. He is a graduate of Wright State University, earning a BA in Religion. He lives in Ohio and survives primarily off of peanut M&Ms and mountain Dew.
Two Poems By Bernard Horn, Bernard Horn
Two Poems By Bernard Horn, Bernard Horn
Mad River Review
Bernard Horn’s Our Daily Words, winner of the Old Seventy Creek Poetry Prize, was a finalist for the 2011 Massachusetts Book Award in Poetry. His translations from the Hebrew of Yehuda Amichai’s poetry have appeared in The New Yorker and other magazines. His poems have been featured in the Dime Show Review, the New York Times, Home(less)ness: Geographies of Identity: a zine, and the 2015 anthology, Devouring the Green: Anthology of New Writing. One poem was used to commemorate 9/11 on huffingtonpost.com, and he was a finalist for the 2016 Mississippi Review Poetry Prize, the …
Cliff Path, Anne Britting Oleson
Cliff Path, Anne Britting Oleson
Mad River Review
Anne Britting Oleson lives and writes from the side of a mountain in Central Maine. She has published three chapbooks (The Church of St. Materiana, The Beauty of It, and Alley of Dreams) and two novels (The Book of the Mandolin Player and Dovecote). Her work has appeared in literary magazines worldwide.
Doing His Time With Fire, John Grey
Doing His Time With Fire, John Grey
Mad River Review
John Grey is an Australian poet, US resident. Recently published in the Homestead Review, Poetry East and Columbia Review with work upcoming in Harpur Palate, the Hawaii Review and North Dakota Quarterly.
Two Apples Too Heavy, Colleen S. Harris
Two Apples Too Heavy, Colleen S. Harris
Mad River Review
Colleen S. Harris serves as a librarian on the faculty at California State University Channel Islands, where she also teaches in the Freedom and Justice Studies minor. She is the author of God in My Troat: The Lilith Poems (Bellowing Ark 2009), These Terrible Sacraments (Bellowing Ark, 2010), and The Kentucky Vein (Punkin House, 2011), as well as the chapbooks That Reckless Sound and Some Assembly Required out of Porkbelly Press (2014). She is a three-time Pushcart Prize nominee for her poetry and fiction, holds the MFA in Writing from Spalding University, and is the co-editor of Women and Poetry: …
Urban Impacts On The Biological Health Of Portland Streams, Chris Prescott
Urban Impacts On The Biological Health Of Portland Streams, Chris Prescott
Urban Ecosystem Research Consortium of Portland/Vancouver
The ecological health of Portland stream communities varies widely. Fish and bugs score poorly against regional benchmarks, yet there are clear signs of ecological values that persist in the face of urbanization. The ten most commonly encountered fish are native, two of the five most common are salmonids, and bug communities in some streams within Forest Park meet or approach values expected of regional reference streams. A set of upland and instream indicators of urbanization were used to investigate the key drivers of stream health in Portland. Macroinvertebrate health was most strongly related to canopy cover, particularly within the riparian …
Mixing Of The Willamette And Columbia Rivers Across Sauvie Island, Oregon Based On Stable Isotopes (Δ18o And Δd) Of Surface Water, Mae Saslaw
Urban Ecosystem Research Consortium of Portland/Vancouver
The stable isotopic composition of surface water (δ18O and δD) is used extensively to constrain water evolution throughout the hydrologic cycle. The isotopic composition of meteoric water varies globally based on latitude, elevation, distance from its source, and environmental conditions during and after precipitation. Existing data show that the isotopic signatures of the Willamette and Columbia Rivers are distinct from one another with δ18O values of approximately -10.5‰ and -16.2‰ respectively. Sauvie Island lies at the confluence of these two rivers. It is an 84.8 km2 floodplain containing wetlands, channels, and lakes. I collected water samples throughout the region, including …
Streams Without Biology: How Physics Inadvertently Usurped River Restoration, Janine M. Castro
Streams Without Biology: How Physics Inadvertently Usurped River Restoration, Janine M. Castro
Urban Ecosystem Research Consortium of Portland/Vancouver
The foundations of river restoration science rest comfortably in the fields of geology, hydrology, and engineering. Lane’s stream balance equation from the mid-1950s taught us that there is a dynamic equilibrium between the amount of stream flow, the slope of the channel, and the amount and caliber of sediment. The Manning’s equation, circa 1890, still influences most stream restoration projects designed today. Inherent in that famous equation are the variables of slope and hydraulic radius, and the ever-confounding roughness coefficient (n). Biology, while completely absent in the stream balance equation, makes a cameo appearance in the Manning’s equation buried in …
Who Does It Best? Engineers Vs. Beavers In A Stormwater Treatment Facility, Katie A. Holzer, Karen Bromley, Torrey Lindbo
Who Does It Best? Engineers Vs. Beavers In A Stormwater Treatment Facility, Katie A. Holzer, Karen Bromley, Torrey Lindbo
Urban Ecosystem Research Consortium of Portland/Vancouver
What do you do when beavers drastically change the hydrology in a multi-million dollar, highly-engineered stormwater treatment facility? Conduct a study! The City of Gresham constructed the 13-acre Columbia Slough Regional Water Quality Facility in 2009 to treat stormwater runoff from 880 acres of mostly industrial land use before it enters the Columbia Slough. In 2014, beavers moved into the facility and built an extensive network of dams on the engineered terraces and berms which substantially altered the stormwater residence time, flow path, and composition of vegetation. To determine what affect these dams had on the pollutant removal capability of …
Interaction Of Climate Change With Restoration Action Maturation In An Urban Environment: Impacts To Salmon Habitat, Laura E. Mcmullen, Jon Walker, Chip Mcconnaha
Interaction Of Climate Change With Restoration Action Maturation In An Urban Environment: Impacts To Salmon Habitat, Laura E. Mcmullen, Jon Walker, Chip Mcconnaha
Urban Ecosystem Research Consortium of Portland/Vancouver
A number of salmon utilize Portland’s urban waterways including Chinook and Coho, and steelhead trout. The City of Portland has implemented and planned numerous aquatic, riparian, and stormwater restoration actions to improve habitat for salmonids and other natives; and Portland is the first city to receive Salmon Safe Certification. We conducted an independent evaluation process as part of the certification to evaluate effects of restoration actions on habitat for salmonids in the context of an urban environment and climate change. We engaged a multi-party process to incorporate empirical data, spatial analysis, expert knowledge, and mathematical modeling into a holistic evaluation …
Adjusting Network Parameters Dynamically To Accelerate Mesh Network Convergence, Yinfang Wang, Jim Lu, Chuanwei Li, Yajun Xia
Adjusting Network Parameters Dynamically To Accelerate Mesh Network Convergence, Yinfang Wang, Jim Lu, Chuanwei Li, Yajun Xia
Defensive Publications Series
Techniques are described to adaptively adjust network parameters by adjusting the network scale. On one side, a smooth Clear Channel Assessment (CCA) mechanism may adaptively adjust the network scale to take precautions for collision. On the other side, a Cyclic Redundancy Check (CRC) mechanism may also automatically adjust the network scale to detect the collision. This may speed up network formation and convergence significantly, and maintain the network effectively.
Light From Light, Jeanette Reedy Solano
Light From Light, Jeanette Reedy Solano
Journal of Religion & Film
This is a film review of Light from LIght (2019) directed by Paul Harrill.
Exploratory Noxious Weed Survey Of The Middle And Upper Columbia Slough Watersheds, Alexander Staunch
Exploratory Noxious Weed Survey Of The Middle And Upper Columbia Slough Watersheds, Alexander Staunch
Urban Ecosystem Research Consortium of Portland/Vancouver
A major responsibility of Multnomah County Drainage District #1 (MCDD) is to manage drainage and maintain water conveyance within 45 miles of ditches, sloughs, and streams in the Portland Area. In 2014 MCDD staff observed an increasing abundance of noxious weeds, which resulted in additional resources allocated to the removal of plant material. The increasing abundance of noxious weeds conflicts with MCDD’s responsibility of maintaining conveyance. With assistance from Mosaic Ecology LLC, annual exploratory surveys were initiated in 2016 within the Middle and Upper Columbia Slough sub-watersheds to assess the current distribution of noxious weeds and provide recommendations for management. …
Influence Of Water Availability On Native Wildflower Phenology And Pollinator Attractiveness, Aaron G. Anderson, Lucas Costner, Gail Langellotto
Influence Of Water Availability On Native Wildflower Phenology And Pollinator Attractiveness, Aaron G. Anderson, Lucas Costner, Gail Langellotto
Urban Ecosystem Research Consortium of Portland/Vancouver
In 2017 and 2018, we performed a field study screening 23 garden-friendly, native Willamette Valley wildflowers (and four exotic comparators) for their attractiveness to pollinators. Flower phenology and pollinator visitation differed between the two seasons. There was a marked difference in both flowering timing and duration. The 2017 peak bloom began an average of 17.7 days later than 2018, and ceased 27.7 days later. Thus, the length of 2018 peak bloom was 10 days shorter on average, and ended a month earlier. We hypothesize that these differences are due to water availability. In 2017, we irrigated to ensure perennial establishment, …
Understanding The Gaps Between Interest And Knowledge Of Bee Pollinators, Lauren E. Bennett, Gail Langellotto
Understanding The Gaps Between Interest And Knowledge Of Bee Pollinators, Lauren E. Bennett, Gail Langellotto
Urban Ecosystem Research Consortium of Portland/Vancouver
Recent research has shown a gap between the public’s interest in new pollinators and the public’s understanding of bees and their needs. This study examines public knowledge and validation of bee pollinators through a survey consisting of questions that ask the respondent to identify bees, rank flowers in terms of bee foraging resources, identify individual contributions to pollinators’ resources at home or in a community garden, and state values for pollinators. The goal of this effort is to highlight potential gaps in interest and understanding to allow educators and scientists to more efficiently target these gaps in knowledge to better …
Exploring The Relationship Between Collaborative Partnerships And Outcomes: An In-Depth Look At The Tree For All Program, Rebecca Mclain, Antonia Machado
Exploring The Relationship Between Collaborative Partnerships And Outcomes: An In-Depth Look At The Tree For All Program, Rebecca Mclain, Antonia Machado
Urban Ecosystem Research Consortium of Portland/Vancouver
In 2017, The Intertwine Alliance, Clean Water Services, and the Tualatin River National Wildlife Refuge (TRNWR) embarked on a project with PSU’s Institute for Sustainable Solutions to assess the benefits of collaborative partnerships and identify the factors contributing or hindering their success. The project focused primarily on the Tree for All (TFA) program in the Tualatin River Watershed. Over the course of six months, our team examined three restoration projects in depth, including the Rural Landowners Incentives Program and restoration efforts in the Jackson Bottom Wetlands Preserve and the Fanno Creek Greenway area. Mini case studies of restoration efforts by …
Effective Outreach To Vulnerable And Underserved Communities Through Community Engagement Liaisons (Cels), Jennifer Devlin
Effective Outreach To Vulnerable And Underserved Communities Through Community Engagement Liaisons (Cels), Jennifer Devlin
Urban Ecosystem Research Consortium of Portland/Vancouver
In 1993, The Oregon Health Authority (OHA) issued a Fish Advisory regarding the consumption of fish from the Columbia Slough. Historically, the Slough was a dumping ground for slaughterhouse, industrial, and chemical waste. These practices resulted in contamination of sediment and fish accumulated with PCB, pesticides, metals, and other pollutants. As part of the Columbia Slough Sediment Program, the City of Portland (City) provides education and outreach regarding the Fish Advisory under Intergovernmental Agreement between the City of Portland and Department of Environmental Quality (DEQ). Results from the most recent fish tissue sampling event by The Columbia Slough Sediment Program …