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Invertebrates Ofthe 113 AOO003O4flI6E HLI/l- !, I 4 SPECIAL PUBLICATION 4 SEPTEMBER 1982 STATE UB INVERTEBRATES OFTHE 113. ANDREWS EXPERiMENTAL FOREST, WESTERN CASCADE MOUNTAINS, OREGON: A SURVEY OF ARThROpODS ASSOCIATED WITH THE CANOPY OF OLD-GR()WFH Pseudotsuga Menziesii D.J. Voegtlin FOREJT QE1EARCH SCHOOL OF FORESTRY OREGON STATE UNWERSITY Since 1941, the Forest Research Laboratory--part ofthe School of Forestry at Oregon State University in Corvallis-- has been studying forests and why they are like they are.A staff ormore than 50 scientists conductsresearch to provide information for wise public and private decisions on managing and using Oregon's forest resources and operating its wood-using industries. Because of this research, Oregon's forests now yield more in the way of wood products, water, forage, wildlife, and recreation. Wood products are harvested, processed, and used more efficiently. Employment,productivity,and profitability in industries dependent on forests also have been strengthened. And this research has helped Oregon to maintain a quality environment for its people. Much research is done in the Laborátoryff's facilities on the campus. But field experiments in forest genetics, young- growth management, forest hydrology, harvesting methods, and reforestationareconducted on 12,000acres of School forests adjacent to the campus and on lands of public and private cooperating agencies throughout the Pacific Northwest. Withthes publications, the Forest ReSeath Laboratory supplies the results of its research to forest land. owners and managers, to manufacturers and users of forest products, to leaders of government and industry, and to the general public. The Author David J.Voegtlin Is Assistant Taxonomist at the Illinois Natural History Survey, Champaign, illinois. Disclaimer The mention of trade names or commercial products in this publication does not constitute endorsement or recomiendatIon for use. ToOrderCopies: Copies of this and other Forest Research Laboratory publications are available from: Forest Research Laboratory School of Forestry Oregon State University Corvallis, Oregon 97331 Please include author(s), title, and publication number if known. CONTENTS 2 INTRODUCTION 2 STUDY AREA 3 CANOPY ACCESS 3 SAMPLING TECHNIQUES 4 Sticky screens 4 Trunk sticky screens 4Pitfalitraps 4 Tuligren sampling 5Filtration 6 Vacuum 6 Blacklight 7 Cookie Cutter 7REFERENCE SPECIMENS 7DISCUSSION 8ARTHROPOD LIST 8 Key 9 Collembola 9 Ephemeroptera 9 Orthoptera 10 Isoptera 10 Plecoptera 10 Psocoptera 10 Thysanoptera 11Hemiptera 11 Homoptera 12 Neuroptera 13Coleoptera 16 Trichoptera 17 Lepidoptera 19 Diptera 22 Hymenoptera 23 Acari 25 Araneae 27LITERATURE CITED 29ACKNOWLEDGMENTS The first of a group)t paperson invertebrates of theH.J. Andrews ExperimentalForest was published in1981 bythe Pacific Northwest Forest and Range Experiment Stit ion (Robert E. Lewis and ChrisMaser, Invertebrates of theH.J. Andrews ExperimentalForest, Wastern Cascades, Oregon. Au Annotated Checklistof Fleas,Research Note PNW-378).The present paper is thesecond inthis group. INTRODUCTION Research on arthropods associated with the were begun in the same area to examine crowns of large trees has been limited nutrient movement within the canopy, which becauseof the difficulty ofaccess. The was of special interest due to the abundance varietyof methods thathas been used to of Lobariaoregana (Tuck.) Mull. Arg., a collect canopy arthropods includes nitrogen-fixing lichen. Includedinthese insecticidaltreatmentby airplane (Martin studies was a survey of the arthropods 1966, Gagne 1979, Wolda 1979), hoisting traps associated with the canopy. on ropes placed by shooting lines over branches with a bow and arrow (Sweney and Other surveys of arthropods associated with Jones1975),beating beech stems with clubs Douglas-fir orthe Douglas-fir forest area (Nielsen 1975a,b), and beating branches havebeen made (Bedard1938, Deyrup 1975, throughout a tree to drop the arthropods onto Deyrup 1981, Mispagel and Rose 1978) and are large sheets (Horegott 1960). Lepointe continuing tobe made inthe H.J.Andrews (1956) covered branches with large Experimental Forest. But these surveys are cylindrical bags, then severed them and confined to the soil, aquatic, and shrub fumigated the contents to knockdown the strata, or to trees whosecanopy canbe insects. Dahlsten (1979) severed and reached without the major climbing technology carefully lowered one-third ofthe branches required for Douglas-fir. of white fir trees, then removed the insects by beating the branches over large collecting An oldgrowth Douglas-fir canopy is exten- sheets. Engel (1941) cut down entire pines sive. It might best be viewed as a truncated onto large sheets and beat the branchesto cone, approximately 10 m in diameter at its obtain the arthropods. Direct access to the base, starting as low as 20 m from the ground canopy has been made by scaffoldings (Morris andreaching nearly 80 m (Franklin et al. 1955), by a smallelevator attached to a 1981). Examination of epiphyte distribution large Sequoiadendron gigantea (Stecker has shown that the canopy can be divided into 1973), and more recently, by an easy, several habitats, each characterizedby cer- nondestructive methodusing modifiedrock- tain epiphytic species (Pike et al. 1975). A climbing techniques(Denison etal. 1972, similiar set of distinctive arthropod habi- Perry 1980). tats occursin the canopy: the trunk with its deeply fissured bark and scattered Investigations into the structure of the epiphytes,the large moss bolsters found on canopy of old growth Pseudotsuga rnenziesii some of the lower branches, the large clumps (Mirb.) Franco and the species, distribution of epiphytes on branches throughout the tree, and biomass of macro-and microepiphytes with- the twig and needle surfaces, and the in the canopy were begun in the early 1970's accumulated debris (lodged litter) often in the H. J. Andrews Experimental Forest on found on the upper surface of the large the west slope of the Cascade Mountains in branch systems. The goal of this project was Oregon (Denison et al. 1972, Pike et al. to collect the arthropod taxa associated with 1972, Pike et al. 1975). In 1975, studies these habitats. STUDY AREA The study sites are located in the H. J. Two of the trees, El Capitan and Neptune, Andrews Experimental Forest (an Ecological were located in Watershed 2 (T15S R5E Sec 31 Environmental Reserve, approximately 75 km SE1/4) near Lookout Creek, elevation 450 m. east of Eugene, Oregon in theCascade Moun- The third, Fangorn, was located about0.5 km tains. The three trees used were located in southof Lookout Creek along the Mack Creek relatively undisturbed old growth stands of road (T15S R5E Sec 28 SE1/4), elevation 625 Pseudotsuga rnenziesii, Tsuga heterophyila m. The trees were approximately 450 years (Raf.) Sarg. and Thuja plicata Donn. corre- old, 1.5 mdiameter at breast height, and sponding to the Tshe/Rhma/Bene community of 75-78 m tall. El Capitanand Neptune had Franklin and Dyrness (1973). been documented as to structure, epiphyte 3 presence, biomass, and surface areas of all possible, sampling was designed to correlate major components (see Pike et al. 1977 for a with the previous data base and sampling description of an old growthDouglas-fir techniques of the detailed studies of El similar to those used in this survey). When Capitan and Neptune. CANOPY ACCESS With the aid of stirrups and body harness Safetyprecautions limited the movement of attached to jumars clipped on a top-anchored the climbers within the canopy, as they rope and a safety belay, climbers made rapid, remained attached to the ropes at all times. easy, and repeated access to the canopy with Lateral access was essentially limited to 3 m minimum habitat disruption (Denison 1973). or less in any direction from the trunk. SAMPLING TECHNIQUES The techniques used were standard methods al specific sampling methods and regimes adapted for use in the canopy. The variety (Fig.1). ot within-canopy habitats necessitated sever- 976 1977 978 sticky traps- Fangorn I sticky traps El Capiton Tullgren w a filtration z I intensive ___________________________ filtration I- pitfall ______ _________ 0 z :icookie cutter a- vacuum ______________________________ U-) blacklight trunk sticky traps J-MIA_JIJ_SO-DJ_MIA-JJ-S O-D J-MIA-JJ-SIO-D TIME PERIOD FIGURE 1 ARTHROPOD SAMPLING IN ThE CANOPY OF OLD GROWTH DOUGLAS-FIR IN THE H. J. ANDREWS EXPERIMENTAL FOREST, OREGON, 1976-1978. SOLID BARS REPRESENT DATA SETS THAT CAN BE DIRECTLY CORRELATED TO A SPECIFIC HABITAT QUANTITY (BY WEIGFIT). 4 Sticky screens that the bottomscreen on eachhalyard was completely outside the canopy, the third at The use of sticKy material is a familiar and the outer edge, the second in the middle, and effective way to collect insects, but the the first near the trunk. Because of the data are difficult to relate quantitatively slope of the rope halyards, the bottom screen to the habitat. Damage to the insects of the upper halyard was slightly below the captured on sticky materials is also a top screen of the middle halyard. However, problem,hut with care itcan be minimized specimens taken on this screenwere still for many orders. considered to be from the upper canopy. The structure of the large trees is such that Samples were initially taken on halyards sticky screens could not be pulled up and attached to El Capitan, but later the hal- down on ropes running along the trunk. yards were moved to Fangorn. On both trees Rather, halyards wereattached at three sticky screens were changed every 2 weeks. levels within the canopy and operated from points at some distance from the base of the Insects were removed by soakingthe screens tree. The location of each halyard was in hot kerosene until the specimens dropped determined by available access points. One- off. The hot kerosene and insects were then fourth-inch (0.64 cm) mesh hardware cloth filtered through a Buchner funnel and the was cut to 20 x 25 cm pieces anJ 20 x 20 cm filter paper and specimens allowed to air of each piece was covered with Stickem Spe- dry.
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