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• 1. [Article] Soil weathering processes in the Findley Lake watershed

  This is the annual report from the investigators responsible for soil characterization at the Findley Lake watershed. Soil characterization is complete for two soils and is in progress on six others. Site preparation ...

  Citation × Citation Citation Abstract Copy Title: Soil weathering processes in the Findley Lake watershed Author: U.S. International Biological Program. Coniferous Forest Biome, Singer, Michael J. (Michael John), 1945-, University of Washington, Ugolini, Fiorenzo C. This is the annual report from the investigators responsible for soil characterization at the Findley Lake watershed. Soil characterization is complete for two soils and is in progress on six others. Site preparation for years 3 and 4 is complete except for lysimeter installation. Title: Soil weathering processes in the Findley Lake watershed Author: U.S. International Biological Program. Coniferous Forest Biome, Singer, Michael J. (Michael John), 1945-, University of Washington, Ugolini, Fiorenzo C. This is the annual report from the investigators responsible for soil characterization at the Findley Lake watershed. Soil characterization is complete for two soils and is in progress on six others. Site preparation for years 3 and 4 is complete except for lysimeter installation. Close

• 2. [Article] Forest plant communities of the lower Cedar River watershed

  Citation × Citation Citation Abstract Copy Title: Forest plant communities of the lower Cedar River watershed Author: University of Washington, Scott, David R. M., Long, J., U.S. International Biological Program. Coniferous Forest Biome Title: Forest plant communities of the lower Cedar River watershed Author: University of Washington, Scott, David R. M., Long, J., U.S. International Biological Program. Coniferous Forest Biome Close

• 3. [Article] Findley Lake watershed a terrestrial-lake interface program

  Includes supplemental reports 25-A, B & C.

  Citation × Citation Citation Abstract Copy Title: Findley Lake watershed a terrestrial-lake interface program Author: Olson, R. R., Del Moral, Roger, U.S. International Biological Program. Coniferous Forest Biome, Bockheim, James G., Tsukada, M., Welch, E. B. (Eugene B.), University of Washington, Ugolini, Fiorenzo C. Includes supplemental reports 25-A, B & C. Title: Findley Lake watershed a terrestrial-lake interface program Author: Olson, R. R., Del Moral, Roger, U.S. International Biological Program. Coniferous Forest Biome, Bockheim, James G., Tsukada, M., Welch, E. B. (Eugene B.), University of Washington, Ugolini, Fiorenzo C. Includes supplemental reports 25-A, B & C. Close

• 4. [Article] Vegetation and stem mapping of watershed 10, H. J. Andrews Experimental Forest

  Stem mapping of all trees greater than 15 cm dbh has been completed on the 10.24 hectare watershed (No. 10) at H. J. Andrews intensive study site. Using a 25 m grid system, mapping of vegetation into 7 ...

  Citation × Citation Citation Abstract Copy Title: Vegetation and stem mapping of watershed 10, H. J. Andrews Experimental Forest Author: Hawk, Glenn M., U.S. International Biological Program. Coniferous Forest Biome, University of Washington Stem mapping of all trees greater than 15 cm dbh has been completed on the 10.24 hectare watershed (No. 10) at H. J. Andrews intensive study site. Using a 25 m grid system, mapping of vegetation into 7 plant communities and then into 4 habitat types has also been completed. Descriptions of these communities based on field notes and extrapolation from reference stands located in the Andrews Experimental Forest are included along with structural characteristics of the communities and habitat types. Size class distributions of living trees greater than 15 cm dbh are also included for the whole watershed, for communities, and for habitat types. INTRODUCTION: Watershed 10 has been selected for current modeling efforts of the IBP Coniferous Forest Biome project at the Oregon intensive study site, H. J. Andrews Experimental Forest. This report supplies a necessary input for calculating standing crop of vegetation in all strata from trees to mosses. A community description approach has been used with tables and appendices furnishing data concerning trees, shrubs, herbs and mosses occurring within the watershed. Watershed 10 contains representatives of communities common to the lower elevation regions of the Tsuga hetero h lla Zone of Franklin and Dyrness (1969). Within watershed communities are identified, which are discussed below. Major emphasis of this report is placed on description of the vegetation. Some comparisons of communities with each other and with other portions of the Tsuga heterophylla Zone near the H. J. Andrews Experimental Forest are also included. Watershed 10 is a 10.24 hectare watershed that drains to the west. It is located near to but outside of the southwestern boundary of the Experimental Forest. The elevation of the watershed ranges from 1425 feet (435 m) to 2,275 feet (695 m). The entire watershed lies within the Tsuga heterophylla.Zone of Franklin and Dyrness. METHODS: Preliminary surveying of watershed 10 with staff compass, chains and Abney levels was completed in 1970. During this surveying three base lines running north and south were established at equal intervals within the watershed. These base lines served as reference points during the establishment of a 25 m grid system in 1971-1972. Using staff compass, chains, and Abney levels, the 25 m grid system was established with correction for slope over the entire watershed (figure 1). During spring, 1972, aluminum corner stakes were installed and labeled to mark the 25 meter grid corners. Grid sections were numbered, for referencing positions in the watershed. Title: Vegetation and stem mapping of watershed 10, H. J. Andrews Experimental Forest Author: Hawk, Glenn M., U.S. International Biological Program. Coniferous Forest Biome, University of Washington Stem mapping of all trees greater than 15 cm dbh has been completed on the 10.24 hectare watershed (No. 10) at H. J. Andrews intensive study site. Using a 25 m grid system, mapping of vegetation into 7 plant communities and then into 4 habitat types has also been completed. Descriptions of these communities based on field notes and extrapolation from reference stands located in the Andrews Experimental Forest are included along with structural characteristics of the communities and habitat types. Size class distributions of living trees greater than 15 cm dbh are also included for the whole watershed, for communities, and for habitat types. INTRODUCTION: Watershed 10 has been selected for current modeling efforts of the IBP Coniferous Forest Biome project at the Oregon intensive study site, H. J. Andrews Experimental Forest. This report supplies a necessary input for calculating standing crop of vegetation in all strata from trees to mosses. A community description approach has been used with tables and appendices furnishing data concerning trees, shrubs, herbs and mosses occurring within the watershed. Watershed 10 contains representatives of communities common to the lower elevation regions of the Tsuga hetero h lla Zone of Franklin and Dyrness (1969). Within watershed communities are identified, which are discussed below. Major emphasis of this report is placed on description of the vegetation. Some comparisons of communities with each other and with other portions of the Tsuga heterophylla Zone near the H. J. Andrews Experimental Forest are also included. Watershed 10 is a 10.24 hectare watershed that drains to the west. It is located near to but outside of the southwestern boundary of the Experimental Forest. The elevation of the watershed ranges from 1425 feet (435 m) to 2,275 feet (695 m). The entire watershed lies within the Tsuga heterophylla.Zone of Franklin and Dyrness. METHODS: Preliminary surveying of watershed 10 with staff compass, chains and Abney levels was completed in 1970. During this surveying three base lines running north and south were established at equal intervals within the watershed. These base lines served as reference points during the establishment of a 25 m grid system in 1971-1972. Using staff compass, chains, and Abney levels, the 25 m grid system was established with correction for slope over the entire watershed (figure 1). During spring, 1972, aluminum corner stakes were installed and labeled to mark the 25 meter grid corners. Grid sections were numbered, for referencing positions in the watershed. 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• 5. [Article] Modeling the hydrological aspects of the Fern Lake Watershed : annual report 1971

  Data collected from the Fern Lake watershed between 1958 and 1971 include measurements of the rate of flow of water into the lake through a single inlet stream. The objective of the work presented here ...

  Citation × Citation Citation Abstract Copy Title: Modeling the hydrological aspects of the Fern Lake Watershed : annual report 1971 Author: U.S. International Biological Program. Coniferous Forest Biome, Fowler, Charles W. (Charles Winsor), 1941-, University of Washington Data collected from the Fern Lake watershed between 1958 and 1971 include measurements of the rate of flow of water into the lake through a single inlet stream. The objective of the work presented here is to develop a model of this flow using the climatological data available from the watershed. Measurements of air temperature, wind movement, air pressure, relative humidity, insolation, and precipitation were used to estimate the potential evapotranspiration through the use of the Penman equation (Penman 1948). A model based on relationships found in the published literature and some empirical relationships was developed to simulate the dynamics of the soil water. This submodel was incorporated into the larger model to link the climatological input variables to streamflow. Output from the computer program developed for the model includes soil water content, underground flow, evaporation, transpiration, and streamflow. In its tentative form, the model is sufficiently realistic to be used for further modeling of the dynamics of other aspects of the watershed involving water flow. Title: Modeling the hydrological aspects of the Fern Lake Watershed : annual report 1971 Author: U.S. International Biological Program. Coniferous Forest Biome, Fowler, Charles W. (Charles Winsor), 1941-, University of Washington Data collected from the Fern Lake watershed between 1958 and 1971 include measurements of the rate of flow of water into the lake through a single inlet stream. The objective of the work presented here is to develop a model of this flow using the climatological data available from the watershed. Measurements of air temperature, wind movement, air pressure, relative humidity, insolation, and precipitation were used to estimate the potential evapotranspiration through the use of the Penman equation (Penman 1948). A model based on relationships found in the published literature and some empirical relationships was developed to simulate the dynamics of the soil water. This submodel was incorporated into the larger model to link the climatological input variables to streamflow. Output from the computer program developed for the model includes soil water content, underground flow, evaporation, transpiration, and streamflow. In its tentative form, the model is sufficiently realistic to be used for further modeling of the dynamics of other aspects of the watershed involving water flow. Close

• 6. [Article] Findley Lake lysimeter leachate, precipitation inflow, outflow, and throughfall data, June 1973-January 1974

  Data on soil leachate at three sites and four depths, throughfall, precipitation, and lake inflow and outflow are presented in this report.

  Citation × Citation Citation Abstract Copy Title: Findley Lake lysimeter leachate, precipitation inflow, outflow, and throughfall data, June 1973-January 1974 Author: Minden, Ralph V., U.S. International Biological Program. Coniferous Forest Biome, University of Washington, Ugolini, Fiorenzo C. Data on soil leachate at three sites and four depths, throughfall, precipitation, and lake inflow and outflow are presented in this report. Title: Findley Lake lysimeter leachate, precipitation inflow, outflow, and throughfall data, June 1973-January 1974 Author: Minden, Ralph V., U.S. International Biological Program. Coniferous Forest Biome, University of Washington, Ugolini, Fiorenzo C. Data on soil leachate at three sites and four depths, throughfall, precipitation, and lake inflow and outflow are presented in this report. Close

• 7. [Article] Aquatic production in a sockeye salmon river

  Citation × Citation Citation Abstract Copy Title: Aquatic production in a sockeye salmon river Author: U.S. International Biological Program. Coniferous Forest Biome, Malick, James G., Stober, Quentin J., University of Washington Title: Aquatic production in a sockeye salmon river Author: U.S. International Biological Program. Coniferous Forest Biome, Malick, James G., Stober, Quentin J., University of Washington Close

• 8. [Article] Degradation of organic compounds in freshwater sediments by bacteria

  Some missing pages, best copy available.

  Citation × Citation Citation Abstract Copy Title: Degradation of organic compounds in freshwater sediments by bacteria Author: University of Washington, Wekell, Marleen M., Matches, Jack Ronald, U.S. International Biological Program. Coniferous Forest Biome Some missing pages, best copy available. Title: Degradation of organic compounds in freshwater sediments by bacteria Author: University of Washington, Wekell, Marleen M., Matches, Jack Ronald, U.S. International Biological Program. Coniferous Forest Biome Some missing pages, best copy available. Close

• 9. [Article] Nutrient budgets in the lakes of the Cedar River Watershed

  Aquatic mineral measurements and sediment characterization of the Cedar River basin lakes and streams reveals two largely distinct physical and chemical environments. Near the headwaters of the Cedar River ...

  Citation × Citation Citation Abstract Copy Title: Nutrient budgets in the lakes of the Cedar River Watershed Author: Spyridakis, Dimitri E., U.S. International Biological Program. Coniferous Forest Biome, Welch, E. B. (Eugene B.), University of Washington Aquatic mineral measurements and sediment characterization of the Cedar River basin lakes and streams reveals two largely distinct physical and chemical environments. Near the headwaters of the Cedar River Watershed the composition of lakes and streams reflect adjacent rocks but the effects of forest and agricultural practices and of processes occurring downstream very quickly alter the composition to a type largely responsive to the urbanization in the lower reaches of the watershed. The relative ionic composition in the watershed is: Ca > Mg ≥ Na > K and HCO₃ > Cl ≥ S0₄. A 2- to 10-fold increase in concentration is measured with most chemical parameters when comparing upper watershed to lower watershed. The lowest increase is observed with total phosphorus reflecting perhaps identical phosphorus solubility control mechanisms. Annual nutrient budgets for Lake Sammamish suggest a reduction in sedimented phosphorus since diversion, but little change in the quantity of phosphorus released from anaerobic sediment. Although the sediment phosphorus supply during the summer and fall months is nearly three times higher than the external phosphorus supply its relative contribution to the trophogenic layer phosphorus is a function of lake mixing. An iron precipitation mechanism appears to control the mean winter phosphorus contents of Lake Sammamish. The prevailing anoxic conditions in the lake during late summer and fall bring about large increases in hypolimnetic iron concentrations which upon destratification precipitate phosphorus as an iron (111) hydroxy complex. Lake sediment characterization indicate differences between lakes with respect to carbon/nitrogen, nitrogen/phosphorus and particle size distribution reflecting drastic variations in the depositional environments and trophic status of the upper and lower watersheds. Higher carbon/nitrogen and nitrogen/phosphorus ratios and coarser sediments are measured in oligotrophic Findley Lake. With the exception of Findley Lake, all sediments appear to have the same composition with respect to Fe, Mn, Ca, Mg, Na, and K contents. Simulation of sediment phosphorus release at the sediment-water interface In enclosed in situ Lake Sammamish sediment-water columns appears to parallel the phosphorus release measured in the lake hypolimnion at the peak of the lake stagnation period. Preliminary studies indicate that it will be possible to relate the nutrient release results from the in situ columns to those of laboratory studies, arriving thus at a faster more economically obtained elucidation of the nutrient exchange mechanisms and potentials at lake sediment-water interface. Title: Nutrient budgets in the lakes of the Cedar River Watershed Author: Spyridakis, Dimitri E., U.S. International Biological Program. Coniferous Forest Biome, Welch, E. B. (Eugene B.), University of Washington Aquatic mineral measurements and sediment characterization of the Cedar River basin lakes and streams reveals two largely distinct physical and chemical environments. Near the headwaters of the Cedar River Watershed the composition of lakes and streams reflect adjacent rocks but the effects of forest and agricultural practices and of processes occurring downstream very quickly alter the composition to a type largely responsive to the urbanization in the lower reaches of the watershed. The relative ionic composition in the watershed is: Ca > Mg ≥ Na > K and HCO₃ > Cl ≥ S0₄. A 2- to 10-fold increase in concentration is measured with most chemical parameters when comparing upper watershed to lower watershed. The lowest increase is observed with total phosphorus reflecting perhaps identical phosphorus solubility control mechanisms. Annual nutrient budgets for Lake Sammamish suggest a reduction in sedimented phosphorus since diversion, but little change in the quantity of phosphorus released from anaerobic sediment. Although the sediment phosphorus supply during the summer and fall months is nearly three times higher than the external phosphorus supply its relative contribution to the trophogenic layer phosphorus is a function of lake mixing. An iron precipitation mechanism appears to control the mean winter phosphorus contents of Lake Sammamish. The prevailing anoxic conditions in the lake during late summer and fall bring about large increases in hypolimnetic iron concentrations which upon destratification precipitate phosphorus as an iron (111) hydroxy complex. Lake sediment characterization indicate differences between lakes with respect to carbon/nitrogen, nitrogen/phosphorus and particle size distribution reflecting drastic variations in the depositional environments and trophic status of the upper and lower watersheds. Higher carbon/nitrogen and nitrogen/phosphorus ratios and coarser sediments are measured in oligotrophic Findley Lake. With the exception of Findley Lake, all sediments appear to have the same composition with respect to Fe, Mn, Ca, Mg, Na, and K contents. Simulation of sediment phosphorus release at the sediment-water interface In enclosed in situ Lake Sammamish sediment-water columns appears to parallel the phosphorus release measured in the lake hypolimnion at the peak of the lake stagnation period. Preliminary studies indicate that it will be possible to relate the nutrient release results from the in situ columns to those of laboratory studies, arriving thus at a faster more economically obtained elucidation of the nutrient exchange mechanisms and potentials at lake sediment-water interface. Close

• 10. [Article] Interim progress 1972 : water column respiration

  The purpose of the past year's research was to begin measurement of the respiratory metabolism of zooplankton and phytoplankton in four lakes in the Lake Washington drainage. This was done, using an enzyme assay ...

  Citation × Citation Citation Abstract Copy Title: Interim progress 1972 : water column respiration Author: Packard, T. T., U.S. International Biological Program. Coniferous Forest Biome, Kuntz, D. R., University of Washington The purpose of the past year's research was to begin measurement of the respiratory metabolism of zooplankton and phytoplankton in four lakes in the Lake Washington drainage. This was done, using an enzyme assay for the activity of the electron transport system. The lakes were sampled frequently and depth profiles of respiration at different seasons were assembled. A calibration study involving comparison of respiration. values and dissolved oxygen data from Lake Washington was begun. Title: Interim progress 1972 : water column respiration Author: Packard, T. T., U.S. International Biological Program. Coniferous Forest Biome, Kuntz, D. R., University of Washington The purpose of the past year's research was to begin measurement of the respiratory metabolism of zooplankton and phytoplankton in four lakes in the Lake Washington drainage. This was done, using an enzyme assay for the activity of the electron transport system. The lakes were sampled frequently and depth profiles of respiration at different seasons were assembled. A calibration study involving comparison of respiration. values and dissolved oxygen data from Lake Washington was begun. Close