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8.44 TITLE: Ecotypic Variation in Net Photosynthesis of Douglas-Fir under Field Conditions with Particular Reference to Sampling Methods OBJECTIVES: 1. Determination of the within-tree variation in net photosynthesis by simultaneous measurements at ten points via temperature- and humidity-controlled cuvettes already available. 2. Monthly measurements of selected ecotypes in plantation throughout the year under a variety of environmental conditions normally encountered at this locality to determine the net assimilation on an annual basis. 3. Concurrent measurements of internal moisture stresses (via a pressure bomb) and stomatal behavior (via an infiltration chamber) to determine their effects on net assimilation rates. These measurements will be made in cooperation with Dr. Waring. 4. Development of a thermoelectrically controlled air-drying mechanism for humidity control within the cuvettes. 5. Comparison of the performance of the ten cuvettes with that of a Siemens cuvette on loan from Siemens during the summer and fall of 1971. APPROACH: The first part of the study will be spent comparing the performance of the ten cuvettes with that of a borrowed German cuvette (Siemens). Arrangements are now being made to borrow such a unit from Germany, and we will be able to get assistance from a graduate student thoroughly familiar with it after a year of study in Germany under the direction of Dr. 0. Lange. Such a comparison will no doubt result in the construction of a device to control humidity, and it is anticipated that some months will be spent perfecting the performance of the ten cuvettes to come as close as possible to that of the Siemens cuvette, or at least permit the development of some correction factor. This should be accomplished by the end of summer 1971. During the fall and winter of 1971-72 efforts will be made to estimate the within-tree variation in photosynthetic rates to arrive at a meaningful estimate of the total net assimilation. The main part of the study will be initiated during the spring of 1972 and will consist of monthly measurements on selected ecotypes. Initially, such types will be from drastically different native habitats, such as northern Rocky Mountains versus Arizona and Vancouver Island, available in plantation at Corvallis. The number of trees measured simultaneously will depend somewhat on the results obtained from the study of within-tree variation. However, within each monthly measurement period we think it possible by moving cuvettes from tree to tree, with overlapping simultaneous measurements, to estimate within a reasonable degree of accuracy the photosynthetic rates of a number of ecotypes.
8.45 Simultaneously with the monthly measurements made throughout the year, which will include the usual meteorological factors, Dr. Waring will determine internal moisture stresses by way of the pressure bomb technique, as well as stomatal behavior by the infiltration method. Furthermore, we want to follow up some interesting leads obtained in the laboratory with potted seedlings from a number of areas. We have shown that soil temperature apparently has a strong effect on the assimilation rates and plan therefore to record soil temperatures during the measurements. Also, there are strong indications that types from the northern Rocky Mountains, at least when grown under Corvallis conditions, are characterized by a very low assimilation rate during the winter months, possibly because of a chlorophyll breakdown. Some types show practically no assimilation at 20°C in January-February when kept out-of-doors until a few days before measurements. We want to determine to what degree this is an artifact created by the laboratory conditions during measurements. EXPECTED RESULTS: The ability to calculate the total annual net assimilation under given natural conditions will be the main result. In addition we expect to obtain an estimate of the differences among ecotypes from widely different natural habitats when grown together in plantation. Of particular importance are the correlations between total annual net assimilation and factors such as internal moisture stress, stomatal behavior, and phenology (such as time of shoot and cambial initiation of growth). The latter will be done in cooperation with Dr. Waring. PERSONNEL: Principal Investigator: Helge Irgens-Moller, School of Forestry, Oregon State University Coinvestigators: W. K. Ferrell, School of Forestry, Oregon State University Richard H. Waring, School of Forestry, Oregon State University
Page 1 and 2: UNITED STATES INTERNATIONAL BIOLOGI
Page 3 and 4: 8.01 8.1 List of Participants Page
Page 5 and 6: 8.03 Page No. Gray, J. Department o
Page 7 and 8: Newton, M. School of Forestry, Oreg
Page 9 and 10: Waring, R. H. School of Forestry, O
Page 11 and 12: H. Bell, J. F. and Lavender, D. P.
Page 13 and 14: 8.11 Page No. 35. Driver, C. H. 8.7
Page 15 and 16: 59. Knox, E. G. and Parsons, R. B.
Page 17 and 18: 8.3. Individual Proposed Abstracts
Page 19 and 20: model but the ultimate aim is to de
Page 21 and 22: TITLE: OBJECTIVES: Systems Analysis
Page 23 and 24: TITLE: Trophic Relation Model in Aq
Page 25 and 26: TITLE: Seasonal and Diurnal Pattern
Page 27 and 28: EXPECTED RESULTS 8.25 Year 2 will b
Page 29 and 30: 8.27 Measurements will be made with
Page 31 and 32: 8.29 TITLE: Assimilation-Water Rela
Page 33 and 34: TITLE: Seasonal Variation of CO., A
Page 35 and 36: 8.33 To repeat, acquisition of the
Page 37 and 38: 8.35 In addition, sufficient sample
Page 39 and 40: TITLE! Site Characterization, Biolo
Page 41 and 42: 8.39 2. Provision of a year's data
Page 43 and 44: 3.41 A further argument against exc
Page 45: 8.43 Estimates of current net produ
Page 49 and 50: 8.47 All seeds will be collected an
Page 51 and 52: 8.49 Data from these studies, toget
Page 53 and 54: 8.51 3. Establishment of functions
Page 55 and 56: TITLE: Interaction between Insect C
Page 57 and 58: TITLE: Development of Prototype Pro
Page 59 and 60: TITLE: Primary Insect Consumers of
Page 61 and 62: 8.59 TITLE: Survey of Vertebrate Po
Page 63 and 64: TITLE: Aquatic Decomposition in Lak
Page 65 and 66: 8.63 TITLE: Degradation of Organic
Page 67 and 68: TITLE: Oxidation of Organic Matter
Page 69 and 70: 8.67 an oxygen electrode and a buil
Page 71 and 72: TITLE: Nitrogen Transformations OBJ
Page 73 and 74: E TITLE: Study of Fungal Parasites
Page 75 and 76: TITLE: Epiphyte Communities: Catalo
Page 77 and 78: Where possible, fungi identified as
Page 79 and 80: 8.77 in such a manner that it could
Page 81 and 82: 8.79 bags and transferred to the la
Page 83 and 84: Studies of soil fungi depend upon d
Page 85 and 86: TITLE: The Role of Various Microfau
Page 87 and 88: PERSONNEL: Principal Investigator:
Page 89 and 90: PERSONNEL: Principal Investigator:
Page 91 and 92: Q = 0sfa + QO + Q+r 8 . i89J where
Page 93 and 94: 8.91 TITLE: Dynamics and Productivi
Page 95 and 96: TITLE: The Role of Biota of Small S
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TITLE: Aquatic Production in a Sock
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TITLE: Population Magnitude and Spe
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8.99 TITLE: Biogeochemical Equilibr
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8.101 interface as a function of me
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TITLE: Data Compilation Proposal, I
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TITLE: Data Compilation on the Eagl
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APPROACH. 8.107 An important elemen
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8.109 The following biogeochemical
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8.111 zooplankton should interact t
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PERSONNEL: Principal Investigators:
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EXPECTED RESULTS: 8.115 Our work on
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8.117 separated from the rest of th
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8.119 approximately three-week inte
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8.121 variations in the character o
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Study of soil-landscape relationshi
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8.125 some time has elapsed after w
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TITLE: Geologic Investigation of th
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TITLE: Fate of Radionuclides in a M
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8.131 transfer processes (Cole). Th
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TITLE: Understanding Subsurface Flo
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8.135 sites which have potential fo
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8.137 4. Using the model, managemen
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TITLE: Water Balance of the Findley
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8.141 TITLE: A Study of the Relatio
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8.143 TITLE: Evapotranspiration and
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8.145 TITLES The Development of a B
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8.147 TITLE: Assessment of Sensible
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TITLE: Administration of the Lake W
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TITLE: Administration of the H. J.
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and card punching service to all re
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8.155 TITLE: Organization and imple
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8.4. System Modeling 8.157 Briefly
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8.159 illegitimate simplifications
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that changes in species abundances
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Certain data must eventually be obt
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Consumer Terrestrial System Atmosph
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5j Water Cycle Chemical Cycle Energ
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Litter subsystem Soil subsystem [CO
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Variations in stand composition are
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a e Q Input ECOSYSTEM s WATERSHED V
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8.175 33. Water metabolized by prod
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8.5. Literature Cited Anderson, S.
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Gilmour, C. M., A. R. Thompson, and
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0 8.181 Odum, H. T. 1967. Energetic
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Windsor, G. 1969. Dynamics of Phosp
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Name: Norman H. Anderson Title: Ass
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Name: John F. Bell Title: Associate
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Name: Hugh Clark Black Title: Assoc
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Name: George W. Brown Title: Assist
Page 195 and 196:
Name: Robert H. Burgy Title: Profes
Page 197 and 198:
Name: George C. Carrol Title: Assis
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Name: Cheng-lung Chen Title: Profes
Page 201 and 202:
Name: Dale W. Cole Title: Associate
Page 203 and 204:
Name: Gerald E. Davis Title: Associ
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Name: Roger Del Moral Title: Assist
Page 207 and 208:
Name: Inge Dirmhirn Title. Professo
Page 209 and 210:
Name: Charles H. Driver III Title:
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Name: William K. Ferrell Title: Pro
Page 213 and 214:
Name. Richard L. Fredriksen Title:
Page 215 and 216:
Name: Robert I. Cara Title: Associa
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Name: Lloyd Wesley Gay Title: Assis
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Name: C. M. G i lmour Title: Profes
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Name: Jane Gray Title: Associate Pr
Page 223 and 224:
Name: George E. Hart Title: Associa
Page 225 and 226:
Name: William T. Helm Title: Associ
Page 227 and 228:
Name: Richard Hermann Title: Associ
Page 229 and 230:
Name: Eugene K. Israelsen Title: Re
Page 231 and 232:
Name: Carl F. Jordan Titled Assista
Page 233 and 234:
Name: Jerry R. Kline Title: Associa
Page 235 and 236:
Name: Donald M. Knutson Title: Plan
Page 237 and 238:
Name: Denis P. Lavender Title: Prof
Page 239 and 240:
Name. Kuo C. Lu Title: Principal Mi
Page 241 and 242:
Name: Larry M. Male Title: Senior R
Page 243 and 244:
Name: Jack R. Matches Title: Acting
Page 245 and 246:
Name: David H. Milne Title: Assista
Page 247 and 248:
Name. Donald L. Morgan Title: Assoc
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Name: Title: Mailing Address: Born:
Page 251 and 252:
Name: Carl H. Nellis Title: Researc
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Name: Michael Newton Title: Associa
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Name: Makoto Ogawa Title: Senior Re
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Name: Paul R. Olson Title: Fisherie
Page 259 and 260:
Name: Theodore T. Packard Title: Re
Page 261 and 262:
Name: Roger B. Parsons Title: Resea
Page 263 and 264:
Name: Gary B. Pitman Title: Project
Page 265 and 266:
Name: William H. R i ckard Title: S
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(dame: John P. Riley Title: Associa
Page 269 and 270:
Name: Jack Rothacher Title: Princip
Page 271 and 272:
Name: David R. M. Scott Title: Prof
Page 273 and 274:
Name: Reinhard F. Stettler Title: A
Page 275 and 276:
Name: Robert M. Storm Title: Profes
Page 277 and 278:
Name: Richard D. Taber Title: Profe
Page 279 and 280:
Name: Richard E. Thorne Title: Seni
Page 281 and 282:
Name: Matsuo Tsukada Title: Associa
Page 283 and 284:
Name: Fiorenzo C. Ugolini Title: As
Page 285 and 286:
Name: Richard B. Walker Title: Prof
Page 287 and 288:
Name: Charles E. Warren Title: Prof
Page 289 and 290:
Name. A. R. Weisbrod Title: Assista
Page 291 and 292:
Name: Howard C. Whisler Title: Asso
Page 293 and 294:
Name: John A. Wiens Titles Associat
Page 295 and 296:
Name: David D. WWooldridge Title: A
Page 297 and 298:
Name. Richard S. Vydoski Title.. As
Page 299 and 300:
Name: Bratislav Zak Title: Principa
Page 301:
8.7'Addendum (additional proposal a
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