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Articles 1 - 19 of 19
Full-Text Articles in Forest Sciences
Investigating Meter Scale Topographic Variation As A Factor Of Monterey Pine (Pinus Radiata) Growing Conditions At Kenneth Norris Rancho Marino Reserve, Cambria, Ca, William J. Meyst
Natural Resources Management and Environmental Sciences
Endemic Monterey pine (Pinus radiata) is limited to three locations in California due to its unique ecological requirements. This project was conducted to investigate spatial growth patterns ofMonterey pine over complex ground surfaces. The coastal hills of Rancho Marino Reserve, Cambria, were surveyed using four 150-m transects to quantify and record ground surface features and growing conditions ofMonterey pine. Changes in elevation of each transect were measured using an Abney level. Linear ground surfaces were found at 86% (344 of 400) of survey nodes. Convex ground surfaces were found at 10.5% of survey nodes (42 of 400). Of …
Land Management Practices And Their Effects On Grouse Populations Of The American Pacific Northwest, Connor Michael Pompa
Land Management Practices And Their Effects On Grouse Populations Of The American Pacific Northwest, Connor Michael Pompa
Natural Resources Management and Environmental Sciences
No abstract provided.
Variability In Soil Climate And Respiration On Managed Timber Stands: A Case Study In Southwest Oregon, Scott Pensky, Adrian Gallo
Variability In Soil Climate And Respiration On Managed Timber Stands: A Case Study In Southwest Oregon, Scott Pensky, Adrian Gallo
Natural Resources Management and Environmental Sciences
Thinning of forested lands and timber stands in the Pacific Northwest have taken place for centuries with a limited understanding of how the alterations may affect ecosystem functions. The goal of this study was to examine the soil climate and microbial activity on a seasonal timescale of thinning practices examined at different stages of succession. Two timber stands in Southwestern Oregon within the Grayback Creek Watershed were chosen because of identical forest management techniques separated by a 10-year treatment interval (40% variable density thinning). Field methods and equipment measured canopy coverage, soil moisture and temperature at 3 depths (5, 15, …
Habitat Type Mapping In Montana De Oro State Park Through Gis Image Classification, Evan Corrales, Sarah Fockler
Habitat Type Mapping In Montana De Oro State Park Through Gis Image Classification, Evan Corrales, Sarah Fockler
Natural Resources Management and Environmental Sciences
This project involved using aerial imagery and GIS procedures to automatically map the basic vegetation communities present within Montana de Oro State Park, CA: grassland, coastal scrub, bare ground, woodland, and riparian areas. 1m resolution color imagery of the park from the NAIP 2005 (National Agriculture Inventory Program) and 1m resolution LiDAR height data were also used to determine the locations of the different vegetation types in the park. This data was then classified by color using the interactive supervised classification tool in ArcGIS. Points were taken in the park using a GPS unit, and compared with the GIS results …
Wildland Urban Interface Assessment Of San Luis Obispo, California, Brian Hanson, Stephen Kadash, Nicholi Mackewicz
Wildland Urban Interface Assessment Of San Luis Obispo, California, Brian Hanson, Stephen Kadash, Nicholi Mackewicz
Natural Resources Management and Environmental Sciences
The purpose of this report is to provide a wildland fire hazard assessment of communities in the city of San Luis Obispo, California, and to identify prescriptions designed to prevent property damage and loss of life in the event of a wildfire. These prescriptions are adopted from established Shelter-In-Place communities who practice fire wise community wildfire prevention.There are eight communities that were identified as being fire prone. Each community had its own set of fire hazard, for example, flammable vegetation against a home, tall dead grass behind structures, or overhanging trees that would prevent an engine from passing. Once the …
Rangeland Oak Regeneration, Rehabilitation, And Conservation In Varian Ranch, Arroyo Grande, Ca., Tiffany Lappinga, Ivy Ku
Rangeland Oak Regeneration, Rehabilitation, And Conservation In Varian Ranch, Arroyo Grande, Ca., Tiffany Lappinga, Ivy Ku
Natural Resources Management and Environmental Sciences
Since the majority of oak woodlands are currently under private management, it is important to educate landowners about the importance and value of preserving this unique type of forest, especially in California. The study region takes place in Varian Ranch, Arroyo Grande, California. This project aims to promote the health of rangeland oaks with a three-pronged approach: regeneration, rehabilitation, and conservation. Common issues associated with the decline of oaks include, but are not limited to, invasive/exotic plant species, changes in land use, overgrazing, and soil compaction. This project hopes to address some of these issues, as well as revitalize previous …
A Slo Landowners Guide To Natural Resource Regulations, Rob S. Whyte
A Slo Landowners Guide To Natural Resource Regulations, Rob S. Whyte
Natural Resources Management and Environmental Sciences
Many land owners today are simply unaware of the fact that their private land falls under not only local laws and regulations, but also several state and federal regulations. Unfortunately, this unawareness has often resulted in complete negligence to the land, further leading to the degradation of resources such as creeks and landscapes. “A SLO Land Owners Guide to Natural Resource Regulations” was created to provide the basic knowledge of the different regulations that govern landowners of San Luis Obispo County, with the intent to increase the compliance to the different laws and regulations.
Evaluation And Utilization Of The Continuous Forest Inventory System At Swanton Pacific Ranch, Dominic Ali, Reid Cody
Evaluation And Utilization Of The Continuous Forest Inventory System At Swanton Pacific Ranch, Dominic Ali, Reid Cody
Natural Resources Management and Environmental Sciences
Five Continuous Forest Inventories (CFI) and one Senior Project Inventory (Piper et al. 1989) at Swanton Pacific Ranch in Davenport, CA were compiled and standardized to be formatted for input into Forest and Stand Evaluation Environment (FORSEE) growth and yield modeling software. Data from field books and Excel spreadsheets located on the Cal Poly Natural Resources Management Department hard drive was transcribed into a Microsoft Excel database. Data sources and authenticity were verified by cross-referencing plot data from multiple sources, associated senior project reports, and location on the Swanton grid system. An additional summary spreadsheet was made to help users …
Mill Creek Management Plan, Joey A. Gentry
Mill Creek Management Plan, Joey A. Gentry
Natural Resources Management and Environmental Sciences
The goal of this study is to conduct a management plan for the Mill Creek property. This will be obtained through meeting the landowner objectives concerning: wildlife with habitat enhancements, recreation locations, and the forest growth potential pertaining to different areas of the property. This plan will also offer suggestions and guidelines to maximize the use of the property. Including a collection of flora, fauna, and health related issues in the appendices for identification. The site condition on the property is very poor, and as a result the growth rate for this area is slow. It is recommended that the …
Structure And Development Of Pitch Canker Infected Monterey Pine Stands At Año Nuevo, California, Douglas D. Piirto, Sauli Valkonen
Structure And Development Of Pitch Canker Infected Monterey Pine Stands At Año Nuevo, California, Douglas D. Piirto, Sauli Valkonen
Natural Resources Management and Environmental Sciences
The sustainability of indigenous Monterey pine (Pinus radiata D. Don)at Ano Nuevo stands in the central coast of California was examined. The foremost management objective in these stands is to establish and maintain stand structures that ensure a sustainable presence of the species in terms of uneven-aged management. The major threats are the proliferation of shade-tolerant tree species and the pitch canker ( Fusarium circinatum) disease. The study was based on data from 17 systematically placed sample plots, measured once, in one stand with a very high degree of variation in stand structure and species composition. The results …
Fire Regimes And Resultant Forest Structure In Native Año Nuevo Monterey Pine (Pinus Radiata) Forest, California, Scott L. Stephens, Douglas D. Piirto, Domenico F. Caramagno
Fire Regimes And Resultant Forest Structure In Native Año Nuevo Monterey Pine (Pinus Radiata) Forest, California, Scott L. Stephens, Douglas D. Piirto, Domenico F. Caramagno
Natural Resources Management and Environmental Sciences
Native Monterey pine (Pinus radiata) forests occur in five populations on the west coast of North America. High severity fire has been reported to be the main disturbance agent that initiates seedling establishment for this species. To investigate the impacts of fire in this ecosystem, age structure and fire history data were collected from the native Ano Nuevo Monterey pine forest near Santa Cruz California. Stump cross-sections were removed from 10 randomly placed openings, and each was dated to determine tree age and fire history. Average mean fire return intervals were 11.2-20.1 y. Fifty-one percent of the Monterey …
An Ecological Basis For Managing Giant Sequoia Ecosystems, Douglas D. Piirto, Robert R. Rogers
An Ecological Basis For Managing Giant Sequoia Ecosystems, Douglas D. Piirto, Robert R. Rogers
Natural Resources Management and Environmental Sciences
A strategy for management of giant sequoia groves is formulated using a conceptual framework for ecosystem management recently developed by Region Five of the USDA Forest Service. The framework includes physical, biological, and social dimensions. Environmental indicators and reference variability for key ecosystem elements are discussed in this paper. The selected ecosystem elements include: 1) attitudes, beliefs, and values; 2) economics and subsistence; 3) stream channel morphology; 4) sediment; 5) water; 6) fire; 7) organic debris; and 8) vegetation mosaic. Recommendations are made for the attributes of environmental indicators that characterize these elements. These elements and associated indicators will define …
Communicating The Role Of Science In Managing Giant Sequoia Groves, Douglas D. Piirto, Robert R. Rogers, Mary C. Bethke
Communicating The Role Of Science In Managing Giant Sequoia Groves, Douglas D. Piirto, Robert R. Rogers, Mary C. Bethke
Natural Resources Management and Environmental Sciences
Management of giant sequoia groves has been and continues to be a hotly debated issue. The debate has reached Congress, with all parties seeking resolution as to what constitutes an ecologically and publicly acceptable management approach. Determining the correct management approach and communicating that approach to the general public is the crux of the problem. Emerging concepts and principles of forest ecosystem management may provide a mechanism to seek resolution of these management problems related to giant sequoia. The Memorandum of Understanding between the members of the recently formed Giant Sequoia Ecology Cooperative provided the impetus for the development of …
Efficacy Of Herbicide Application Methods Used To Control Tanoak (Lithocarpus Densiflorus) In An Uneven-Aged Coast Redwood Management Context, Douglas D. Piirto, Brenda Smith, Eric K. Huff, Scott T. Robinson
Efficacy Of Herbicide Application Methods Used To Control Tanoak (Lithocarpus Densiflorus) In An Uneven-Aged Coast Redwood Management Context, Douglas D. Piirto, Brenda Smith, Eric K. Huff, Scott T. Robinson
Natural Resources Management and Environmental Sciences
Three methods of tanoak (Lithocarpus densiflorus [Hook. & Arn.] Rehd.) control involving the application of the amine or ester form of triclopyr were evaluated in this coast redwood uneven-aged forest management study of herbicides. A cut-stump application with the amine form of triclopyr (Garlon 3A), frill cut with the amine form of triclopyr, basal-bark (outer surface) with the ester form of triclopyr (Garlon 4), and an untreated control were replicated three times. The tanoak control results in Douglas-fir (Pseudotsuga menziesii [Mirb.] Franco) and/ or coast redwood (Sequoia sempervirens [D. Don] Endl.) predominated stands obtained in earlier studies …
Giant Sequoia Insect, Disease, And Ecosystem Interactions, Douglas D. Piirto
Giant Sequoia Insect, Disease, And Ecosystem Interactions, Douglas D. Piirto
Natural Resources Management and Environmental Sciences
Individual trees of giant sequoia (Sequoia gigantea [Lindl.] Decne.) have demonstrated a capacity to attain both a long life and very large size. It is not uncommon to find old-growth giant sequoia trees in their native range that are 1,500 years old and over 15 feet in diameter at breast height. The ability of individual giant sequoia trees to survive over such long periods of time has often been attributed to the species high resistance to disease, insect, and fire damage. Such a statement, however, is a gross oversimplification, given broader ecosystem and temporal interactions. For example, why isn't …
Cost-Effective Wilderness Fire Management: A Case Study In Southern California, Christian A. Childers, Douglas D. Piirto
Cost-Effective Wilderness Fire Management: A Case Study In Southern California, Christian A. Childers, Douglas D. Piirto
Natural Resources Management and Environmental Sciences
Federal wilderness fire management policies have been scrutinized since the catastrophic fires in the Greater Yellowstone Area in 1988. While wilderness tire management objectives are still aimed at recreating natural fire regimes, all USDA Forest Service fire management programs must be cost-effective. Since current Forest Service economic analyses do not fully represent the value of fire to wilderness, a cost-effectiveness analysis was developed to compare wilderness fire management options. The analytical procedure is briefly reviewed, illustrated through a southern California case study and case study results are discussed. These results suggest that containment of some tires may be more cost-effective …
Cost-Effective Fire Management For Southern California's Chaparral Wilderness: An Analytical Procedure, Chris A. Childers, Douglas D. Piirto
Cost-Effective Fire Management For Southern California's Chaparral Wilderness: An Analytical Procedure, Chris A. Childers, Douglas D. Piirto
Natural Resources Management and Environmental Sciences
Fire management has always meant fire suppression to the managers of the chaparral covered southern California National Forests. Today, Forest Service fire management programs must be cost effective, while wilderness fire management objectives are aimed at recreating natural fire regimes. A cost-effectiveness analysis has been developed to compare fire management options for meeting these objectives in California's chaparral wilderness. This paper describes the analytical procedure using examples from a study currently being conducted for the Los Padres National Forest, and discusses some preliminary results.
Wood Of Giant Sequoia: Properties And Unique Characteristics, Douglas D. Piirto
Wood Of Giant Sequoia: Properties And Unique Characteristics, Douglas D. Piirto
Natural Resources Management and Environmental Sciences
Wood properties of giant sequoia (Sequoia gigantea [Lindl.] Decne.) were compared with those for other coniferous tree species. Wood properties such as specific gravity, various mechanical properties, extractive content, and decay resistance of young-growth giant sequoia are comparable to or more favorable than those of coast redwood (Sequoia sempervirens [D. Don] Endl.). It is recommended that giant sequoia be considered for planting stock in managed production forests to increase future supplies of wood having the characteristics so highly valued in coast redwood and other decay-resistant species
Poria Incrassata In Giant Sequoia, Douglas D. Piirto, John R. Parmeter, W. Wayne Wilcox
Poria Incrassata In Giant Sequoia, Douglas D. Piirto, John R. Parmeter, W. Wayne Wilcox
Natural Resources Management and Environmental Sciences
No abstract provided.