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Volume 16 (4) 2009

• Relative importance of endogenous and exogenous mechanisms in maintaining phytoplankton species diversity

  Anita NARWANI, Julie BERTHIN & Asit MAZUMDER, Water and Aquatic Sciences Research Program, Department of Biology, University of Victoria, P.O. Box 3020, Station C.S.C., Victoria, British Columbia V8W 3N5, Canada, e-mail: anarwani@uvic.ca

• The seedling bank stabilizes the erratic early regeneration stages of the invasive Prunus serotina

  Margot VANHELLEMONT & Lander BAETEN, Laboratory of Forestry, Ghent University, Geraardsbergsesteenweg 267, B-9090 Gontrode, Belgium, e-mail: Margot.Vanhellemont@UGent.be
  Martin HERMY, Division Forest, Nature and Landscape, K.U.Leuven, Celestijnenlaan 200e, B-3001 Leuven, Belgium.
  Kris VERHEYEN, Laboratory of Forestry, Ghent University, Geraardsbergsesteenweg 267, B-9090 Gontrode, Belgium.

• Effects of woody debris and ferns on herb-layer vegetation and deer herbivory in a Pennsylvania forest blowdown

  Lisa M. KRUEGER & Chris J. PETERSON, Department of Plant Biology, University of Georgia, 2502 Miller Plant Sciences, Athens, Georgia 30602-7271, USA.

• Within season short-term hatching delays suggest risk-spreading behaviour in populations of the freshwater cladoceran Daphnia

  Joost VANOVERBEKE & Luc DE MEESTER, Laboratory of Aquatic Ecology and Evolutionary Biology, K.U.Leuven, Charles Deberiotstraat 32, B-3000 Leuven, Belgium, e-mail: joost.vanoverbeke@bio.kuleuven.be

• Resource-tracking by bumble bees: What explains local responses to density of bergamot (Monarda fistulosa) flowers?

  Ralph V. CARTAR, Department of Biological Sciences, University of Calgary, Calgary, Alberta T2N 1N4, Canada, e-mail: cartar@ucalgary.ca

• Seasonal changes in habitat features influencing nest survival of sharp-tailed grouse in northeastern British Columbia, Canada

  Alicia D. GODDARD & Russell D. DAWSON, Ecosystem Science and Management Program, University of Northern British Columbia, 3333 University Way, Prince George, British Columbia V2N 4Z9, Canada.

• Augmentation du couvert en peuplier faux-tremble dans les pessières noires du nord-ouest du Québec après coupe totale

  Simon LAQUERRE, Université du Québec en Abitibi-Témiscamingue, 445 boulevard de l'Université, Rouyn-Noranda, Québec J9X 5E4, Canada, simon.laquerreATuqat.ca
  Alain LEDUC, Chaire industrielle CRSNG-UQAT-UQAM en aménagement forestier durable, Centre d'étude sur la forêt et Département des sciences biologiques, Université du Québec à Montréal, C.P. 8888, Succ. Centre-Ville, Montréal, Québec H3C 3P8, Canada.
  Brian D. HARVEY, Chaire industrielle CRSNG-UQAT-UQAM en aménagement forestier durable, Université du Québec en Abitibi-Témiscamingue, 445 boulevard de l'Université, Rouyn-Noranda, Québec J9X 5E4, Canada.

• Arthropod diversity as affected by agricultural management (organic and conventional farming), plant species, and landscape context

  Céline BOUTIN, Science & Technology Branch, Environment Canada, 1125 Colonel By Drive (Raven Road), Carleton University, Ottawa, Ontario K1A 0H3, Canada, e-mail: Celine.Boutin@ec.gc.ca
  Pamela A. MARTIN, Science & Technology Branch, Environment Canada, P.O. Box 5050, 867 Lakeshore Blvd., Burlington, Ontario L7R 4A6, Canada.
  Alain BARIL, Science & Technology Branch, Environment Canada, 1125 Colonel By Drive (Raven Road), Carleton University, Ottawa, Ontario K1A 0H3, Canada.

• Urbanization and stability of a bird community in winter

  Jukka SUHONEN, Department of Biological and Environmental Science, P. O. Box 35, FIN-40014 University of Jyväskylä, Finland, and Section of Ecology, Department of Biology, University of Turku, FIN-20014 Turku, Finland.
  Jukka JOKIMÄKI & Marja-Liisa KAISANLAHTI-JOKIMÄKI, Arctic Centre, University of Lapland, P. O. Box 122, FIN-96101 Rovaniemi, Finland.
  Harri HAKKARAINEN, Section of Ecology, Department of Biology, University of Turku, FIN-20014 Turku, Finland.
  Esa HUHTA, Section of Ecology, Department of Biology, University of Turku, FIN-20014 Turku, Finland, and Finnish Forest Research Institute, Kolari Research Unit, Muoniontie 21A FIN-95900 Kolari, Finland.
  Kimmo INKI, Southeast Finland Regional Environmental Centre, Kauppamiehenkatu 4, PL 1023, FIN-45101 Kouvola, Finland.
  Petri SUORSA, Section of Ecology, Department of Biology, University of Turku, FIN-20014 Turku, Finland.

• Intense seed predation by harvester ants on a rare mustard

  Joshua P. WHITE & Ian C. ROBERTSON, Department of Biological Sciences, Boise State University, 1910 University Drive, Boise, Idaho 83725, USA, e-mail: irobertsATboisestate.edu