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- Creator:
- Jeffrey P. Reiner
- Description:
- Suspended sediment was investigated above and below beaver ponds in the Beaver Creek drainage in the south central mountains of Idaho near Idaho City from March 1979 through September 1979. The study was to identify the potential for beaver ponds as settling basins for suspended sediment in wildland watersheds. Two sampling stations were established above and below a beaver colony. The parameters measured included suspended sediment, stream discharge, and water temperature. Also, the beaver pond volumes and surface areas and beaver dam lengths and heights were measured. The data were collected weekly from March through September, except during May and June when sampling was more frequent to bracket the peak flow period. The data demonstrated that suspended sediment was deposited in the beaver ponds. The proportion of suspended sediment deposited in the beaver ponds averaged about 38 percent on the rising limb, 10 percent during the peak flow period, and 65 percent on the falling limb. The suspended sediment ratio was negatively correlated with stream discharge and positively correlated with water temperature. The relationship between the suspended sediment ratio and the stream discharge and water temperature was significant at the 0.05 level. The quantity of suspended sediment deposited in the beaver ponds during the study period was 78.2 tons, which was approximately 25 percent of the suspended sediment load transported through the above sampling station.
- Resource Type:
- Masters Thesis
- Campus Tesim:
- Humboldt
- Department:
- Environmental Science & Management
- Creator:
- J. Lincoln Freese
- Description:
- The abundance, seasonal distribution, holding habitat and behavior of adult summer steelhead were studied during the summers of 1979-1981 in the Trinity River system, California. The North Fork Trinity River and New River were the only streams in the drainage harboring significant numbers of steelhead during the summer months. Estimated combined run size for both streams ranged from a maximum of 776 fish in 1980 to a minimum of 455 fish in 1981. Summer steelhead began entering the tributaries in early June; entry peaked during mid-July. Steelhead numbers and distribution had substantially stabilized by early August. Summer steelhead were tagged in a single holding pool in the North Fork Trinity River during September 1981. Subsequent surveys revealed that they remained in that pool until the first storm fronts had passed through the area in early October, at which time small groups of fish rapidly migrated upstream. However, some tagged fish were still present at the tagging site in early November. High stream discharge precluded further survey work after that time. Holding pools do not appear to be a limiting factor for adult summer steelhead in either tributary. During the study period, the percentage of pools harboring one or more adult summer steelhead ranged from a minimum of 14 percent to a maximum of 36 percent in the North Fork; corresponding values for the New River were 27 percent and 31 percent. Twenty-seven pools in the New River were surveyed periodically during the summer of 1980. Factor analysis suggested a relationship between steelhead numbers in pools and available cover and shade, but failed to show a relationship between steelhead numbers, pool dimensions, upstream gradient, downstream gradient or distance to first downstream pool. Although no statistical analysis of steelhead numbers and other pool variables was performed for the North Fork Trinity River, observations indicate a high correlation between steelhead numbers and pool dimensions in that stream. Gold-dredging activity was heavy in the New River watershed, and appeared to have had an effect upon steelhead distribution among holding pools in that stream. Heavy poaching activity is a significant threat to the continued survival of the summer steelhead run in the New River drainage. U.S. Forest Service barrier modification efforts in the North Fork Trinity River appeared to have had an effect upon summer steelhead distribution. Steelhead were observed in greater numbers in upstream areas, and were concentrated in a fewer numbers of pools, after barriers were modified. Analysis of scales taken from North Fork Trinity River summer steelhead revealed that 95 percent of returnees smolted at age 2, 44 percent of returnees made their initial upstream migration as "halfpounders", and 42 percent of returnees were repeat spawners.
- Resource Type:
- Masters Thesis
- Campus Tesim:
- Humboldt
- Department:
- Fisheries
- Creator:
- Dallasheh, Dr. Leena
- Description:
- Lecture delivered via webinar on November 12, 2020. Leena Dallasheh is an associate professor of history at Humboldt State University. She received her PhD in the joint History and Middle Eastern and Islamic Studies program at NYU. Her areas of specialization are the social and political history of the modern Middle East and modern Palestinian and Israeli history. Her research focuses on the social and political history of Nazareth from 1940 to 1966, tracing how Palestinians who remained in Israel in 1948 negotiated their incorporation in the state, affirming their rights as citizens and their identity as Palestinian. This lecture is part of Humboldt State University's Sustainable Futures Speaker Series, which is sponsored by the Schatz Energy Research Center, the Environment & Community graduate program, and the College of Arts, Humanities & Social Sciences.
- Resource Type:
- Presentation
- Campus Tesim:
- Humboldt
- Department:
- Environment & Community
- Creator:
- Peters, Evon
- Description:
- Evon Peter is the Chairman of Native Movement and former Chief of the Neetsaii Gwich’in from Arctic Village in northeastern Alaska. He has served as the Co-Chair of the Gwich’in Council International, on the Executive Board of the Alaska Inter-Tribal Council, and as an alternate area Vice-President to the National Congress of American Indians. Evon is a well-recognized advocate of Indigenous Peoples rights, youth, and a balanced world, active as a speaker, strategist, writer, and organizer. His experience includes work within the United Nations and Arctic Council forum representing Indigenous and environmental interests. He dedicates a significant portion of his time to youth leadership development, movement and coalition building, and gathering facilitation. He holds a bachelors degree in Alaska Native studies with a minor in Political Science and is pursuing a Masters degree in Rural Development. Evon is also featured in the 2005 award winning feature film “Homeland: Four Portraits of Native Action,” that follows the work of four Indigenous people who are working on issues of Environmental Justice in North America. and Lecture delivered at Humboldt State University on October 2019. Part of the Sustainable Futures Speaker Series, which is sponsored by the Schatz Energy Research Center, the Environment & Community graduate program, and the College of Arts, Humanities & Social Sciences.
- Resource Type:
- Presentation
- Campus Tesim:
- Humboldt
- Department:
- Environment & Community
- Creator:
- Richmond, Laurie
- Description:
- Lecture delivered at Humboldt State University on December 5, 2019. Part of the Sustainable Futures Speaker Series, which is sponsored by the Schatz Energy Research Center, the Environment & Community graduate program, and the College of Arts, Humanities & Social Sciences.
- Resource Type:
- Presentation
- Campus Tesim:
- Humboldt
- Department:
- Environment & Community
6. The social, economic, and ecological sustainability of cannabis production in northern California
- Creator:
- Reed, Kaitlin, Formosa, Marisa, Corva, Dominic, Barber, Drew, Butsic, Van, Ortiz, Chrystal, and Kelly, Erin
- Description:
- Panel discussion delivered via webinar on April 16, 2020. Part of Humboldt State University's Sustainable Futures Speaker Series, which is sponsored by the Schatz Energy Research Center, the Environment & Community graduate program, and the College of Arts, Humanities & Social Sciences.
- Resource Type:
- Presentation
- Campus Tesim:
- Humboldt
- Department:
- Environment & Community
- Creator:
- Jones, Maureen Gertrude
- Description:
- In most temperate coniferous forests, the vast majority of vascular plant species richness can be found in the understory layer. While the large-scale conversion of forests to plantations has made it increasingly important to understand how understory flora responds to timber harvesting, there is a surprising paucity of data concerning this topic. Ideally, long-term studies using permanent plots would be used to directly assess post-logging patterns of recovery, both for whole floras and for individual species of conservation interest. Unfortunately, these studies are lacking, and alternative approaches are critical. I used a 420 year forest chronosequence to assess the relationship between stand age, overstory cover and vascular plant understory richness and composition in one watershed in the Siskiyou Mountains of Oregon. The chronosequence consisted of six young managed (age 7-44) and nine older unmanaged (age 90-427) stands. All stands were similar in underlying geology, slope, elevation, and aspect. I found a non-linear relationship between stand age and richness, in which richness showed a steady decline as young stands entered canopy closure, then increased as stands gained older forest attributes such as light gaps and structural diversity. I also found that percent open canopy was correlated with total percent understory cover, richness, diversity and changes in species composition. In general, young stands were characterized by high shrub and graminoid cover and old stands were characterized by an abundant herb layer. In my study area, a large proportion of young managed stands are currently entering canopy closure, a stage characterized by low vascular plant species richness and abundance. I use my results to discuss the potential effects of past and future forest management on vascular plant understory species.
- Resource Type:
- Masters Thesis
- Campus Tesim:
- Humboldt
- Department:
- Biology
- Creator:
- Fischer, Jon K.
- Description:
- Elk habitat use and group size were studied during winter and spring near Grass Lake in Siskiyou County, California, from September 1982 through June 1984. Habitat use was based on visual observations of elk from December 1982 through June 1983 and December 1983 through June 1984, and telemetry-locations of three cow elk equipped with transmitters from February through June of 1984. Based on data from both methods, elk used meadows more (P<0.05) than their availability. Elk use of some habitats changed seasonally. Woodland use declined from winter to spring, concomitant with increased meadow use. However, elk use of mixed conifers and grasslands did not change from winter to spring. Some sighting-based estimates of habitat use by elk were different from telemetry-based estimates. Sighting-based estimates of mixed conifer use were less (P<0.05) than corresponding telemetry-based estimates. Sighting-based estimates of meadow use for Spring and the Year of 1984 were greater (P<0.05) than corresponding telemetry-based estimates. Sighting-based estimates of use for all other habitats were equivalent (P<0.05) to corresponding telemetry-based estimates of use. Elk mean group size was 15.9 (SD=l3.4, range: 1-46). Mean group size was 19.8 (SD=l6.0) during winter and 14.7 (SD=ll.6) during spring. Group size in meadows was significantly greater (P<0.05), and group size in mixed conifers was significantly less (P<0.05) than the mean group size for the study period.
- Resource Type:
- Masters Thesis
- Campus Tesim:
- Humboldt
- Creator:
- Ray, Sarah J
- Description:
- Sarah Jaquette Ray has been leading undergraduate environmental studies programs since 2009. During this time, she has observed changes in how students feel about environmental problems, the relationship between those problems and social justice, and their own ability to tackle the problems we face. In her new book, A Field Guide to Climate Anxiety: How to Keep Your Cool on a Warming Planet, Ray researches and guides students through strategies to cultivate personal and collective resilience, to engage for the long haul as social change leaders in this political and ecological moment. This talk will explore the unique challenges and strengths of the climate generation — the youth leading the charge in the movement for climate justice around the world — and offer strategies for existential survival. Sarah Jaquette Ray is program leader of the Environmental Studies BA major at Humboldt State. She is author of The Ecological Other: Environmental Exclusion in American Culture (Arizona, 2013), and co-editor of three volumes, most recently, Latinx Environmentalisms: Place, Justice, and the Decolonial (Temple, 2019). A Field Guide to Climate Anxiety: How to Keep Your Cool on a Warming Planet was released this April on Earth Day. Lecture delivered via webinar on May 7, 2020. Part of the Sustainable futures speaker series sponsored by the Schatz Center, the Environment & Community graduate program, and the College of Arts, Humanities & Social Sciences at Humboldt State.
- Resource Type:
- Presentation
- Campus Tesim:
- Humboldt
- Department:
- Environment & Community
- Creator:
- McGrew, Karen C.
- Description:
- Russian Peak, at an elevation of 8200 feet, is situated in the Salmon Mountains, a north-south trending range centrally located within the Klamath Region of northwestern California. The Salmon Mountains are drained by the Scott River on the east and by the Salmon River on the west; both rivers course northwesterly to discharge into the Klamath River. The Klamath Region is a geologically old and structurally complex series of ranges which grade into the Coast Ranges on the west and into the Cascade Mountains on the northeast. Russian Peak is located in Klamath National Forest, within Siskiyou County, approximately eight miles westsouthwest of the town of Callahan. Access to the area is via Forest Service roads and·unimproved roads off of State Highway 3, which runs northward out of Weaverville. Selection of Russian Peak and its environs as a study area was based on several factors: the lack of bryological collections in the area (Personal communication, Norris, 1973); the presence of relict conifer species as described by Sawyer and Thornburgh (1971); and the presence of a diverse, largely circumboreal moss population on the Marble Mountains, located approximately fifteen miles to the northwest (Spjut, 1971). The objective of the following study was to identify bryophyte species within the area and to determine if the findings would lend further support to the concept of a refugium or "central" area, as described by Whittaker(l961), within the Klamath Region. Collections were made from around five lakes, including their headwaters and drainages, during the summers of 1973 and 1974. A total of 786 specimens were collected, representing 152 species. Collections were made at elevations between 5500 feet and 7200 feet in the following drainages: 1) Sugar Lake and Sugar Creek, August, 1973; 2) South Sugar Lake, August, 1974 (with D.H. Norris); 3) Bingham Lake, September, 1974 (with D.H. Norris); 4) Russian Lake, September, 1973; 5) Waterdog Lake, Lower Russian Lake and South Russian Creek, September, 1973. Bryophytes were collected along paths, in drainages, and from around the lakes. Effort was made to include special habitats, such as springs, marshes, serpentine outcrops, exposed granite walls, rock crevices, and areas adjacent to perennial snow patches. Each collection was identified, checked with specimens from the cryptogamic collection at Humboldt State University, and verified by D. H. Norris. Voucher specimens are on deposit at the Humboldt State University Herbarium (HSC). Collection numbers preceded by the prefix "N" are those of D. H. Norris; all others are those of the author.
- Resource Type:
- Masters Thesis
- Campus Tesim:
- Humboldt
- Department:
- Biology