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Volume 04 (4) 1997

• The parasite fauna of brook trout, Salvelinus fontinalis (Mitchill), in relation to lake morphometrics and the introduction of creek chub, Semotilus atromaculatus (Mitchill)

  Marc BERGERON, Département de chimie-biologie, Université du Québec à Trois-Rivières, C.P. 500, Trois-Rivières, Québec G9A 5H7, Canada.
  David J.MARCOGLIESE, Environnement Canada, Centre Saint-Laurent, 105 rue McGill, 7e étage, Montréal, Québec, H2Y 2E7, Canada.
  Pierre MAGNAN, Département de chimie-biologie, Université du Québec à Trois-Rivières, C.P. 500, Trois-Rivières, Québec, G9A 5H7, Canada, e-mail : pierre_magnan@uqtr.uqubec.ca

• Brood size manipulation in mallard ducks : Effects on duckling survival and brooding efficiency

  Elston H. DZUS, Department of Biology, University of Saskatchewan, 112 Science Place, Saskatoon, Saskatchewan S7N 5E2, Canada
  Robert G. CLARK, Canadian Wildlife Services, 115 Perimeter Road, Saskatoon, Saskatchewan S7N 0X4, Canada, e-mail: bob.clark@ec.gc.ca

• Ant species that protect figs against other ants: Result of territoriality induced by a mutualistic homopteran

  Alain DEJEAN, LEEC (URA-CNRS 2214), Université Paris Nord, 93430 Villetaneuse, France, e-mail: dejean@leec.univ-paris13.fr
  Thierry BOURGOIN, Laboratoire d'Entomologie, Museum National d'Histoire Naturelle, 45 rue Buffon, 75005 Paris, France.
  Marc GIBERNAU, CEFE, CNRS, Route de Mende, BP 5051, 34000 Montpellier, France.

• Size or symmetry: An experiment to determine which of the two accounts for mating success in male midges

  Athol J. McLACHLAN, Department of Marine Sciences and Coastal Management, University of Newcastle upon Tyne, Newcastle upon Tyne, NE1 7RU, United Kingdom, e-mail: a.j.mclachlan@newcastle.ac.uk

• Can kinship ever inhibit the evolution of cooperation?

  Lee Alan DUGATKIN, Department of Biology, University of Louisville, Belknap Campus, Life Sciences Building, Louisville, Kentucky 40292, USA, e-mail: laduga01@homer.louisville.edu

• The effect of neighborhood densities on reproductive success in a heronry

  Hiroki INOUE & Masakado KAWATA, Department of Biology, Faculty of Education, Shizuoka University, Shizuoka 422, Japan.

• Oribatid mites (Acari, Oribatida) of a primary peat bog-pasture transition in the Swiss Jura mountains

  Daniel BORCARD & Catherine VAUCHER-von BALLMOOS, Institute of Zoology, University of Neuchâtel, Emile-Argand 11, CH-2007 Neuchâtel, Switserland.

• Variation in budbreak phenology affects the distribution of a leafmining beetle (Brachys tessellatus) on turkey oak (Quercus laevis)

  Charles W. FOX, Kim J. WADDELL, Francis R. GROETERS & Timothy A. MOUSSEAU, Department of Biological Sciences, University of South Carolina, South Carolina, 29208, USA.

• The role of apical dominance in the interpretation of adaptive architecture in prostrate plant species

  Christopher S. McPHEE, Stephen P. BONSER & Lonnie W. AARSSEN, Department of Biology, Queen's University, Kingston, Ontario K7L 3N6, Canada, e-mail: aarssenl@biology.queensu.ca

• Leaf angle as a strategy for light competition: Optimal and evolutionarily stable light-extinction coefficient within a leaf canopy

  Kouki HIKOSAKA & Tadaki HIROSE, Biological Institute, Graduate School of Science, Tohoku University, Aoba, Sendai, 980-77, Japan, e-mail: hikosaka@mail.cc.tohoku.ac.jp

• Influences of humans and ENSO on fire history of Austrocedrus chilensis woodlands in northern Patagonia, Argentina

  Thomas KITZBERGER, Departamento de Ecologia, Universidad Nacional del Comahue, Estafeta Postal Universidad, 8400 Bariloche, Argentina, e-mail: kitzberg@cab.cnea.edu.ar
  Thomas T. VEBLEN, Department of Geography, University of Colorado, Campus Box 260, Boulder, Colorado 80309, USA, e-mail: veblen@spot.colorado.edu

• Aspect influences cone abundance within the crown of Pinus banksiana Lamb. trees at the limit of the species distribution in northern Québec (Canada)

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

• Nitrogen and phorphorus status in a ponderosa pine forest after 20 years of interval burning

  Robert J. WRIGHT & Stephen C. HART, School of Forestry, College of Ecosystem Science and Management, Northern Arizona University, Flagstaff, Arizona 86011, USA, e-mail: steve.hart@nau.edu

• Improving estimates of total tree ages based on increment core samples

  Ricardo VILLALBA, Departamento de Dendrocronologia e Historia Ambiental, IANIGLA, CONICET, C.C. 330, 5500 Mendoza, Argentina. Thomas T. VEBLEN, Department of Geography, University of Colorado, Boulder, Colorado 80309, USA, e-mail: thomas.veblen@colorado.edu

• Substrate conditions in a treed peatland: Responses to drainage

  Marcel PRÉVOST, Service de la recherche appliquée (Forêts), ministère des Ressources naturelles, 2700, rue Einstein, Sainte-Foy, Québec G1P 3W8, Canada, e-mail: mprevost@mrn.gouv.qc.ca Pierre BELLEAU, Syndicat des Producteurs de Bois du Bas St-Laurent, 284, rue Potvin, Rimouski, Québec G5L 7P5, Canada. André PLAMONDON, Centre de recherche en biologie forestière, Université Laval, Sainte-Foy, Québec G1K 7P4, Canada, e-mail: andre.plamondon@sbf.ulaval.ca

• The ecology of testate amoebae (Protozoa:Rhizopoda) in oceanic peatlands in Newfoundland, Canada: Modelling hydrological relationships for palaeoenvironmental reconstruction

  Daniel J. CHARMAN, Departement of Geographical Sciences, University of Plymouth, Plymouth, Devon, PL4 8AA, United Kingdom, e-mail:dcharman@plymouth.ac.uk Barry G. WARNER, Department of Geography and Wetlands Research Centre, University of Waterloo, Waterloo N2L 3G1, Ontario, Canada, e-mail: bwarner@watserv1.uwaterloo.ca