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Articles 1 - 18 of 18
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Cultural And Ecological Restoration Of School Creek At Blue Lake Rancheria, Humboldt County, Ca, Cecilia C. French, Michelle Mendoza, Roots Galindo, August O'Neil
Cultural And Ecological Restoration Of School Creek At Blue Lake Rancheria, Humboldt County, Ca, Cecilia C. French, Michelle Mendoza, Roots Galindo, August O'Neil
Cal Poly Humboldt Capstone Honor Roll
The School Creek Cultural Revegetation and Riparian Restoration Project site is a low elevation riparian forest surrounding the seasonal creek channel approximately a mile from its confluence with the Baduwa’t (Mad River). The site was originally restored in 2021, with recontouring of the channel and revegetation, however mortality occurred for many planted species which prompted this 2023 project. The School Creek site has been severely degraded over the last hundred years from land use practices, industrialization, and colonization. Streams that have been damaged by heavy logging have created high sedimentation levels within the Baduwa’t, which is listed as “impaired” on …
Analysis Of Benthic Macroinvertebrate Response To Restoration Flows And Scour In The Trinity River, Northern California, Sarah Gutierrez, Julie Avina
Analysis Of Benthic Macroinvertebrate Response To Restoration Flows And Scour In The Trinity River, Northern California, Sarah Gutierrez, Julie Avina
Cal Poly Humboldt Capstone Honor Roll
This study investigates the ecological impact of restoration flows and scouring events on benthic macroinvertebrate (BMI) communities within the Trinity River, an ecosystem historically impacted by anthropogenic activities. Central to this study is the examination of how hydrologic alterations, especially the construction of the Lewiston Dam, have influenced these vital ecological indicators. Using data collected earlier in 2023 from a current study by Benjamin King, we analyzed BMI samples from three river sites (Junction City, Pear Tree, and Lorenz Gulch), both prior to and following a major scouring event in January 2023. This paper utilizes statistical analyses, including ANOVA and …
Seasonal Growth, Movement, And Survival Of Juvenile Coho Salmon (Oncorhynchus Kisutch) Utilizing Restored Rearing Habitat, Monica S. Tonty
Seasonal Growth, Movement, And Survival Of Juvenile Coho Salmon (Oncorhynchus Kisutch) Utilizing Restored Rearing Habitat, Monica S. Tonty
Cal Poly Humboldt theses and projects
The Scott River supports the most robust population of threatened Coho Salmon Oncorhynchus kisutch remaining in the Klamath River basin. Even in the Scott River, low quality and restricted extent of juvenile rearing habitat limits the Coho Salmon population to a small fraction of historic abundance. To support persistence and recovery of Scott River Coho Salmon, the Scott River Watershed Council (SRWC) has constructed a portfolio of restoration projects to improve juvenile rearing habitat, including beaver dam analogs (BDAs). The Scott River BDAs were the first implemented anywhere in California. This study compares juvenile Coho Salmon responses associated with production …
Examining The Impacts Of Beaver Dam Analogues And Groundwater Storage On Miners Creek, California, Miles Munding-Becker
Examining The Impacts Of Beaver Dam Analogues And Groundwater Storage On Miners Creek, California, Miles Munding-Becker
Cal Poly Humboldt theses and projects
Beavers have been altering streams in North America for millions of years by impounding water behind their dams. The recent historical removal (intensely throughout the 18th and 19th century) of these dams altered the hydrology in low gradient streams from dynamic anastomosing streams and wet meadow complexes to incised channels with little structural diversity. Anthropogenic structures called Beaver Dam Analogues (BDAs) are used as a restorative process by mimicking natural beaver dams that can reverse channel incision, increase ponded and groundwater storage, and provide low velocity habitat for aquatic species and vegetation. A system of four original BDAs …
Invasive Species Removal Management Plan For The Invasive Species Ammophila Arenaria And Carpobrotus Edulis Within The Samoa Dunes And Wetlands Conservation Area, Rachel J. Denoncourt, Christopher A. Jamison, Kyra D. Skylark
Invasive Species Removal Management Plan For The Invasive Species Ammophila Arenaria And Carpobrotus Edulis Within The Samoa Dunes And Wetlands Conservation Area, Rachel J. Denoncourt, Christopher A. Jamison, Kyra D. Skylark
Environmental Science & Management Senior Capstones
Coastal sand dunes are invaluable ecosystems throughout the world, as they protect coastal communities (Gomez-Pina, 2002), store sand, and serve as important habitat for unique flora and fauna. Coastal sand dunes are key dynamic “natural structures which protect the coastal environment by absorbing energy from wind, tide and wave action” (AB, 1999). These ecosystems are composed of a beach berm, located closest to the water, then the incipient dune, the foredune(s), and then the backdune(s) (NSW DLWC, 2001). Dynamic systematic sand movement along and between the dune structure is key to a thriving coastal dune ecosystem (U.S. Fish and Wildlife …
Effects Of Large Wood Restoration On Coho Salmon In A Northern California Watershed: A Before-After-Control-Impact Experiment, Natalie B. Okun
Effects Of Large Wood Restoration On Coho Salmon In A Northern California Watershed: A Before-After-Control-Impact Experiment, Natalie B. Okun
Cal Poly Humboldt theses and projects
Substantial time, money, and effort are invested in river and stream restoration projects to aid in the recovery of imperiled salmonid populations, but there is little evidence that these efforts have had lasting positive impacts on juvenile fish growth and survival. To assess the effectiveness of large woody debris (LWD) restoration, which is one of the most common restoration practices, I evaluated the growth and survival response of endangered Central California Coast coho salmon (Oncorhynchus kisutch) in a paired watershed before-after impact-control (BACI) study. To determine if LWD supplementation influenced coho salmon growth and survival, two neighboring, similar …
Habitat Monitoring For Salmonid Health At Headwaters Forest Reserve In Humboldt County, California, Allison Michelle Hutton, Jared Buller, Lauren Ayala
Habitat Monitoring For Salmonid Health At Headwaters Forest Reserve In Humboldt County, California, Allison Michelle Hutton, Jared Buller, Lauren Ayala
Environmental Science & Management Senior Capstones
The influx of fine sediment causes degraded habitat for salmonid species that are under federal monitoring protocols. Within Headwaters Forest Reserve, restoration efforts for salmonids such as road decommissioning have been conducted to reduce the influx of fine sediment into streams. Post-project monitoring of salmonid habitat in impacted streams is necessary to assess restoration effectiveness. Monitoring methods include assessing pool volume, large woody debris, and sediment particle size distribution in riffles. A one-kilometer study reach was examined to give indication of this progress. Thirty-one pools were counted along this study reach. A total of 149 large woody debris pieces were …
Patrick’S Point State Park Habitat Restoration Plan, Christopher M. Glavan, Marina De Paul, Katie Moore
Patrick’S Point State Park Habitat Restoration Plan, Christopher M. Glavan, Marina De Paul, Katie Moore
Environmental Science & Management Senior Capstones
Ongoing efforts at Patrick’s Point State Park (PPSP) seek to restore the ecosystems contained therein. Over time, non-native invasive plant species have become established within the Park. This habitat restoration plan (or Plan) aims to aid in restoring native and sensitive habitat through the removal of non-native invasive species. The Plan will take many different approaches to targeting the invasive non-native plant species depending on the target species and specific site conditions.
Management Recommendations For Jacoby Creek Land Trust’S Off-Channel Pond Site At The Kotke Ranch And Nature Preserve, Marcos Adrian Sosa Morales, Maeve Flynn, Auston Tague
Management Recommendations For Jacoby Creek Land Trust’S Off-Channel Pond Site At The Kotke Ranch And Nature Preserve, Marcos Adrian Sosa Morales, Maeve Flynn, Auston Tague
Environmental Science & Management Senior Capstones
Now more than ever there is a need for conservation easements within California because of ongoing degradation, urbanization, clear cutting and loss of habitat to ecosystems due to wildfires. The Jacoby Creek Land Trust (JCLT) is in need of a restoration and conservation plan regarding constructed off-channel ponds along Jacoby Creek. One of the ponds is flourishing and supporting different types of fishes during their migration. The other pond, our project location, is struggling to meet the JCLT’s project objectives. The pond is overgrown with European grasses due to the surrounding grazing land and has yet to see the pond's …
The Effects Of Woody Vegetation Encroachment And Removal Within A Coastal Fen, Joseph Saler
The Effects Of Woody Vegetation Encroachment And Removal Within A Coastal Fen, Joseph Saler
Cal Poly Humboldt theses and projects
Early successional wetland habitat is being lost in temperate regions worldwide as a result of changes in disturbance regimes that allow for the establishment and dominance of woody species. In particular, this phenomenon is pronounced in fens, which harbor high numbers of rare herbaceous species that require early successional habitat. I investigated the relationship between woody vegetation encroachment and herbaceous species diversity within a Northern California coastal fen that has been undergoing encroachment by woody vegetation for ca. 80 years by recording species richness and cover data from 338 permanent plots throughout the fen. I also investigated the effect of …
Management Recommendations For Ecological Restoration On The Little River Parcel, Maya Sady Partain, Garitt Mathews
Management Recommendations For Ecological Restoration On The Little River Parcel, Maya Sady Partain, Garitt Mathews
Environmental Science & Management Senior Capstones
Ecological restoration is an important aspect of land management. Data collection and ongoing monitoring help inform restoration decisions and determine their effectiveness. In this project, we followed a monitoring protocol provided by the Trinidad Coastal Land Trust to assess the 2019 status of their Little River parcel, a fifteen-acre area near the mouth of Little River in Trinidad, California. We performed a site analysis of invasive plant species and recorded their extent and location, as well as noting other observations of the ecology, topography, and biology of the site. After making our observations, we recommended land management methods woven together …
Evaluation Of Restoration Techniques And Management Practices Of Tule Pertaining To Eco-Cultural Use, Irene A. Vasquez
Evaluation Of Restoration Techniques And Management Practices Of Tule Pertaining To Eco-Cultural Use, Irene A. Vasquez
Cal Poly Humboldt theses and projects
Tule (Schoenoplectus sp.) is a native plant commonly used by California tribes and Indigenous people throughout the world (Macía & Balslev 2000). Ecological, social and regulatory threats to its use in contemporary Indigenous culture highlight major issues concerning natural resource management. My ancestral homeland, what is now Yosemite National Park, stands as a figurehead in the intersection of land management and Indigenous peoples. An important element of Traditional Ecological Management (TEM) for quality basketry materials is prescribed fire, an element western science is increasingly acknowledging for creating a more biodiverse and heterogeneous landscape. This research was conducted in Mariposa and …
Changes In Demography, Distribution, And Diet In Garter Snakes Following Eradication Of A Non-Native Prey Subsidy, Justin A. Demianew Mr.
Changes In Demography, Distribution, And Diet In Garter Snakes Following Eradication Of A Non-Native Prey Subsidy, Justin A. Demianew Mr.
Cal Poly Humboldt theses and projects
Interactions between non-native and native consumers are often complex and cryptic. I shed light on relationships between non-native brook trout (Salvelinus fontinalis), native amphibians, their shared predator (aquatic garter snake; Thamnophis atratus) and a sympatric amphibian specialist (common garter snake; T. sirtalis) using a treatment-control removal experiment in a sub-alpine system of northern California. Eradication of non-native S. fontinalis resulted in an immediate decrease in T. atratus abundance and survival, whereas their abundance increased in concert with T. sirtalis in an adjacent control basin. Additionally, T. atratus body condition decreased substantially during this time, despite their …
Persistence Of Stream Restoration With Large Wood, Redwood National And State Parks, California, Diedra L. Rodriguez
Persistence Of Stream Restoration With Large Wood, Redwood National And State Parks, California, Diedra L. Rodriguez
Cal Poly Humboldt theses and projects
The conservation and recovery of anadromous salmonids (Oncorhynchus sp.) depend on stream restoration and protection of freshwater habitats. In-stream large wood dictates channel morphology, increases retention of terrestrial inputs such as organic matter, nutrients and sediment, and enhances the quality of fish habitat. Historic land use/land cover changes have resulted in aquatic systems devoid of large wood. Restoration by placement of large wood jams is intended to restore physical and biological processes. An important question for scientists and restoration managers, in addition to the initial effectiveness of restoration, is the persistence and fate of large wood installations. In this …
Movement, Habitat, And Home Range Of Introduced Bullfrogs (Lithobates Catesbeianus) On Mad River Gravel Ponds (Humboldt Co., Ca, Usa), With Implications For Hydro-Modification As A Method Of Management, Madeline C. Cooper
Cal Poly Humboldt theses and projects
American Bullfrogs are a non-native, invasive species in California (USA), where they are known to have deleterious effects on many native species. Carnivorous adults prey on native amphibians and fish, while herbivorous tadpoles outcompete native tadpoles for algal food resources. Bullfrogs have been successful at colonizing old tailing ponds and other pools left over from mining activities, and these relict pools are common on many rivers in California. Information on the dispersal capabilities of Bullfrogs could help predict range expansions and inform management decisions. Unfortunately, this information is lacking from both their native and invaded range. From May to August …
A Population Model For Coho Salmon (Onchorhynchus Kisutch) In Freshwater Creek: Evaluating The Effects Of Life History Variation And Habitat Restoration, Gabriel Scheer
Cal Poly Humboldt theses and projects
Historic land use practices and associated habitat degradation have led to significant declines in coho salmon (Oncorhynchus kisutch ) populations across their range. In California they are a state and federally listed species, requiring population monitoring and management plans tailored towards recovery. Traditionally, juvenile coho salmon in California were thought to spend approximately one year in their natal freshwater habitats before migrating to sea the following spring and summer as smolts. However, recent work has documented considerable variation in juvenile life history and migration timing. Specifically, juveniles that migrate downstream prior to one year of age and spend their …
All-Lands Management: Convening Communities And Their Lands Around Fire Management, Jodie T. Pixley
All-Lands Management: Convening Communities And Their Lands Around Fire Management, Jodie T. Pixley
Cal Poly Humboldt theses and projects
Broadly defined, All-lands Management (ALM) is a land management approach involving collaborative, science-based ecosystem restoration at the landscape scale, across ownership and jurisdictional boundaries. My research investigates collaborative groups working to reduce wildfire risk by applying ALM. Fire risk in the Pacific West (California and Oregon) is increasing in severity and extent due to fire suppression and is exacerbated by the effects of drought, climate change, and expanding residential development. For decades federal, state, and local entities have expressed the need to work collaboratively, across boundaries and ownerships to reintroduce fire back onto the landscape to restore forest resiliency. This …
Juvenile Survival And Adult Return As A Function Of Freshwater Rearing Life History For Coho Salmon In The Klamath River Basin, Molly Gorman
Juvenile Survival And Adult Return As A Function Of Freshwater Rearing Life History For Coho Salmon In The Klamath River Basin, Molly Gorman
Cal Poly Humboldt theses and projects
The Scott and Shasta rivers, Klamath River tributaries, experience spatial disparity in habitat quality in spring and summer as a result of historical and current land-use. Juvenile Coho Salmon (Oncorhynchus kisutch) born in the upper tributary reaches often rear in natal streams before migrating to sea. However, those born in the lower reaches often encounter unsuitable habitat and emigrate during their first spring to seek non-natal rearing habitats. It is assumed that these early outmigrants are population losses. This study evaluated first-summer survival, and contribution to the adult population, of non-natal rearing juveniles in the Klamath River Basin. …