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Volume 05 (4) 1998

• Temperature-related differences in life-history characteristics between diploid and polyploid clones of the Daphnia pulex complex

  France DUFRESNE & Paul D. N. HEBERT, Department of Zoology, University of Guelph, Guelph, Ontario, N1G 2W1, Canada.

• Physiological correlates of paternal care in male threespine stickleback

  Helga GUDERLEY & Raul Cubillos GUEVARA, Département de Biologie, Université Laval, Québec, Québec, G1K 7P4 Canada, e-mail: helga.guderley@bio.ulaval.ca

• Lepidopteran richness patterns in North America

  Jeremy T. KERR, Department of Biology, York University, 4700 Keele St., North York, Ontario, M3J 1P3, Canada.
  Rebecca VINCENT & David J. CURRIE, Ottawa-Carleton Institute of Biology, University of Ottawa, Ottawa, Ontario, K1N 6N5, Canada.

• Oviposition site selection and intraspecific competition influence larval survival and pupal weight of Strobilomyia neanthracina (Diptera: Anthomyiidae) in white spruce

  Jon SWEENEY, Natural Resources Canada, Canadian Forest Service, P.O. Box 4000, Fredericton, New Brunswick E3B 5P7, Canada, e-mail: jsweeney@fcmr.forestry.ca
  Dan T. QUIRING, Population Ecology Group, Faculty of Forestry and Environmental Management, University of New Brunswick, Fredericton, New Brunswick, E3B 6C2, Canada, e-mail: quiring@unb.ca

• Patterns of variation in Ilex aquifolium fruit traits related to fruit consumption by birds and seed predation by rodents

  José Ramòn OBESO, Dpto Biología Organismos y Sistemas, Unidad de Ecología, Universidad de Oviedo, E-33071 Oviedo, Spain, e-mail: jrobeso@sci.cpd.uniovi.es

• Intra-plant regulation of growth and plant-herbivore interactions

  Tuija HONKANEN & Erkki HAUKIOJA, Section of Ecology, Department of Biology, University of Turku, FIN-20014 Turku, Finland, e-mail: tuihon@utu.fi

• No risk, no gain? Limited benefits of a non-costly herbivory-induced defense in wheat

  Ernesto GIANOLI & Hermann M. NIEMEYER, Departamento de Ciencias Ecológicas, Facultad de Ciencias, Universidad de Chile, Casilla 653, Santiago, Chile, e-mail: aletheia@abulafia.ciencias.uchile.cl

• Fungus-infected trees as islands in boreal forest: Spatial distribution of the fungivorous beetle Bolitophagus reticulatus (Coleoptera, Tenebrionidae)

  Anne SVERDRUP-THYGESON & Fred MIDTGAARD, Division of Zoology, Department of Biology, University of Oslo, P.O. Box 1050 Blindern, N-0316 Oslo, Norway, e-mail: anne.sverdrup-thygeson@bio.uio.no

• Consumption and assimilation of evergreen oak litter by the slug Anadenus altivagus in Kumaon Himalayan Forests, India

  Pnem K. GUPTA & Brijendra P. OLI, Department of Zoology, D. S. B. Campus, Kumaon University, Nainital-263 002, India.

• Different responses of two carbon-based defences in Scots pine needles to nitrogen fertilization

  Christer BJÖRKMAN, Department of Entomology, Swedish University of Agricultural Sciences, P.O. Box 7044, S-750 07 Uppsala, Sweden, e-mail: christer.bjorkman@entom.slu.se Maarit Kytö, Finnish Forest Research Institute, Vantaa Research Centre, P.O. Box 18, FIN-01 301 Vantaa, Finland.
  Stig LARSSON, Department of Entomology, Swedish University of Agricultural Sciences, P.O. Box 7044, S-750 07 Uppsala, Sweden
  Pekka NIEMELÄ, Finnish Forest Research Institute, Vantaa Research Centre, P.O. Box 18, FIN-01 301 Vantaa, Finland.

• Consequences of clonal variation in aspen phytochemistry for late season folivores

  Shaw-Yhi HWANG & Richard L. LINDROTH, Department of Entomology, 237 Russell Labs, 1630 Linden Dr., University of Wisconsin, Madison, Wisconsin 53706, U.S.A., e-mail: lindroth@entomology.wisc.edu

• Altitudinal variation in size effects on plant reproductive effort and somatic costs of reproduction

  Åsa M. HEMBORG & P. Staffan KARLSSON, Department of Ecological Botany, Uppsala University, Villavägen 14, SE-752 36 Uppsala, Sweden, e-mail: asa.hemborg@vaxtbio.uu.se

• Plant response to heterospecific neighbor removal and nutrient addition in a subarctic coastal dune system (northern Québec, Canada)

  Gilles HOULE, Centre d'études nordiques and Département de biologie, Université Laval, Sainte-Foy, Québec, G1K 7P4, Canada, e-mail: gilles.houle@bio.ulaval.ca

• Net ecosystem CO2 exchange in a boreal peatland, northern Manitoba

  Lianne M. BELLISARIO & Tim R. MOORE, Geography Department and Centre for Climate & Global Change Research, McGill University, 805 Sherbrooke St. W., Montréal, Québec, H3A 2K6, Canada.
  Jill L. BUBIER, Institute for the Study of Earth, Oceans & Space, University of New Hampshire, Durham, New Hampshire 03824, U.S.A.

• Using the normal range as a criterion for ecological significance in environmental monitoring and assessment

  Bruce W. KILGOUR, Department of Biology, University of Waterloo, Waterloo, Ontario, N2L 3G1, Canada.
  Keith M. SOMERS, Ontario Ministry of Environment, Bellwood Acres Road, P.O. Box 39, Dorset, Ontario, P0A 1E0, Canada.
  David E. MATTHEWS, Department of Statistics and Actuarial Science, University of Waterloo, Waterloo, Ontario, N2L 3G1, Canada.

• Geomorphic variation in riparian tree mortality and stream coarse woody debris recruitment from record flooding in a coastal plain stream

  Brian PALIK, USDA Forest Service, North Central Research Station, Forestry Sciences Lab, 1831 Hwy. 169E, Grand Rapids, Minnesota 55744, U.S.A., e-mail: bpalik/nc_grandrapids@fs.fed.us
  Stephen W. GOLLADAY, P. Charles GOEBEL & Brad W. TAYLOR, Joseph W. Jones Ecological Research Center, Route 2, Box 2324, Newton, Georgia 31770, U.S.A.

• Comparative assessment of regional representation and research productivity of conservation biologists and applied ecologists (Commentaire/Commentary)

  Robert FRANCE, Harvard University, Graduate School of Design, 48 Quincy St., Cambridge, Massachusetts 02138, U.S.A.
  Robert PETERS, Department of Biology, McGill University, 1205 Ave. Dr. Penfield, Montréal, Québec, H3A 1B1, Canada.
  Catherine RIGG, Department of Geography, University of Toronto, St. George Campus, Toronto, Ontario, M5S 1A4, Canada.