Allen M F 1992 Mycorrhizal Functioning – An Integrative Plant Fungal Process. Routledge, Chapman and Hall, Inc. New York, NY. 534 p.
Google Scholar
Ader K G 1990 The effect of climate and soils on bracken vigour and distribution in Scotland. No. 40, pp. 141–151. Proceedings of the International Conference Bracken 89 held in Sydney, Australia, July 1989. AIAS-Occasional Publication.
Google Scholar
Azad H R, Davis J R, Schnathorst W C and Kado C I 1985 Relationships between rhizoplane and rhizosphere bacteria and Verticillium wilt resistance in potato. Arch. Microbiol. 140, 347–351.
Google Scholar
Beare, M H, Coleman D C, Crossley D A Jr, Hendrix P F and Odum E P 1995 A hierarchical approach to evaluating the significance of soil biodiversity to biogeochemical cycling. Plant Soil 170, 5–22.
Google Scholar
Boeuf-Tremblay V, Plantureux S and Guckert A 1995 Influence of mechanical impedance on root exudation of maize seedlings at two developmental stages. Plant Soil 172, 279–287.
Google Scholar
Bowen G D and Rovira A D 1992 The rhizosphere: the hidden half of the hidden half. In Plant Roots: The Hidden Half. Eds. Y Waisel, A Eshel and U Kafkafi. pp. 641–669. Marcel Decker, New York.
Google Scholar
Brown S, Andersen C, Beedlow P, Cairns M, HogsettW, Johnson M, McKane R, Rygiewicz P, Seidler R, Solomon A, Tingey D and Watrud L 1998 Forest Ecosystem Indicators: Monitoring, Assessment, Prediction (FEIMAP). U S Environmental Protection Agency, EPA/600/R-99/038, Office of Research & Development, Washington, DC.
Google Scholar
Caporn S J M, Brooks A L, Press M C and Lee J A 1999 Effects of long-term exposure to elevated CO2 and increased nutrient supply on bracken (Pteridium aquilinum). Funct. Ecol. 13, 107–115.
Google Scholar
Chapin F S III, Walker B H, Hobbs R J, Hooper D U, Lawton J H, Sala O E and Tilman D 1997 Biotic control over the functioning of ecosystems. Science 277, 500–504.
Google Scholar
Di Giovanni G D, Watrud L S, Seidler R J and Widmer F 1999 Use of metabolic and molecular fingerprinting to compare rhizosphere microbial communities of parental and transgenic alfalfa. Microb. Ecol. 37, 129–139.
Google Scholar
Dolling A, Zackrisson O and Nilsson M C 1994 Seasonal variation in phytotoxicity of bracken (Pteridium aquilinum L. Kuhn). J. Chem. Ecol. 20, 3163–3172.
Google Scholar
Donegan K K, Watrud L S, Seidler R J, Maggard S P, Shiroyama T, Porteous L A and Di Giovanni G 2001 Soil and litter organisms in Pacific northwest forests under different management practices Appl. Soil Ecol. 18, 159–175.
Google Scholar
Duponnois R and Garbaye J 1991 Mycorrhization helper bacteria associated with the Douglas fir-Laccaria laccata symbiosis: effects in aseptic and in glasshouse conditions. Annu. Sci. Forest. 49, 239–251.
Google Scholar
Frankland F L S 1976 Decomposition of bracken litter. Bot. J. Linn. Soc. 73, 133–143.
Google Scholar
Frey-Klett P, Pierrat J C and Garbaye J 1997 Location and survival of mycorrhiza helper Pseudomonas flourescens during establishment of ectomycorrhizal symbiosis between Laccaria bicolor and Douglas fir. Appl. Environ. Microbiol. 63, 139–144.
Google Scholar
Garland J L 1996a Analytical approaches to the characterization of samples of microbial communities using patterns of potential C source utilization. Soil Biol. Biochem. 28, 213–221.
Google Scholar
Garland J L 1996b Patterns of potential C source utilization by rhizosphere communities. Soil Biol. Biochem. 28, 223–230.
Google Scholar
Garland J L and Mills A L 1991 Classification and characterization of heterotrophic microbial communities on the basis of patterns of community-level sole-carbon-source-utilization. Appl. Environ. Microbiol. 57, 2351–2359.
Google Scholar
Geisler R, Högberg M and Högberg P 1998 Soil chemistry and plants in fennoscandian boreal forest as exemplified by a local gradient. Ecology 79, 119–137.
Google Scholar
Gonzalez A J, Landeras E and Mendoza M C 2000 Pathovars of Pseudomonas syringae causing bacterial brown spot and halo blight in Phaseolus vulgaris L. are distinguishable by ribotyping. Appl. Environ. Microbiol. 66, 850–854.
Google Scholar
Grayston S J and Campbell D C 1996 Functional biodiversity of microbial communities in the rhizospheres of hybrid larch (Larix eurollepis) and Sitka spruce (Picea sitchensis). Tree Physiol. 16, 1031–1038.
Google Scholar
Grayston S J, Wang S, Campbell C D and Edwards A C 1998 Selective influence of plant species on microbial diversity in the rhizosphere. Soil Biol. Biochem. 30, 369–378.
Google Scholar
Haack SD, Garchow H, Klug MJ and Forney CJ 1995 Analysis of factors affecting the accuracy, reproducibility and interpretation of microbial community carbon source utilization patterns. Appl. Environ. Microbiol. 61, 1458–1468.
Google Scholar
Hitchcock C L and Cronquist A 1973 Flora of the Pacific Northwest. University of Washington Press, Seattle, 730 pp.
Google Scholar
Holm L, Doll J, Holm E, Pancho J and Herberger J 1997 World Weeds–Natural Histories and Distribution. pp. 649-663, John Wiley and Sons, Inc., New York.
Google Scholar
Hooper D U and Vitousek P M 1997 The effects of plant composition and diversity on ecosystem processes. Science 277, 1302–1305.
Google Scholar
Horneck D A, Hart J M, Topper K and Koepsel B 1989 Methods of Soil Analysis Used in the Soil Testing Laboratory at Oregon State University. SM 89, 4 Agricultural Experiment Station, Oregon State University, Corvallis, OR.
Google Scholar
Kloepper JW, Schroth M N and Miller T D 1980 Effects of rhizosphere colonization by plant growth-promoting rhizobacteria on potato plant development and yield. Phytopathology 70, 1078–1082.
Google Scholar
Konopka A, Oliver L and Turco R F Jr 1998 The use of carbon substrate utilization patterns in environmental and ecological microbiology. Microb. Ecol. 35, 103–115.
Google Scholar
Kormanik P P and McGraw A C 1982 Quantification of vesiculararbuscular mycorrhizae in plant roots. In Methods and Principles of Mycorrhizal Research. Ed. N C Schenck. pp. 37–45. American Phytopathological Society, St. Paul.
Google Scholar
Latour X, Corberand T, Laguerre G, Allard F and Lemanceau P 1996 The composition of flourescent pseudomonad populations associated with roots is influenced by plant and soil type. Appl. Environ. Microbiol. 62, 2449–2456.
Google Scholar
Legard H A and Meyer L C 1973 Willamette National Forest Soil Resource Inventory, USDA Forest Service, Pacific Northwest Region, Willamette National Forest Supervisor's Office, Eugene, OR.
Google Scholar
Lemanceau P, Coberand T, Gardan L, Latour X, Laguerre G, Boefgras J M and Alabouvette C 1995 Effects of two plant species, flax, (Linum usitatissinum L.) and tomato (Lycopersicon esculentum Mill.), on the diversity of soilborne populations of flourescent pseudomonads. Appl. Environ. Microbiol. 61, 1004–1012.
Google Scholar
Lynch J and Whipps J M 1990 Substrate flow in the rhizosphere. Plant Soil 129, 1–10.
Google Scholar
Magurran A E 1988 Ecological Diversity and its Measurement. Princeton University Press, Princeton, NJ.
Google Scholar
Marrs R H, Lowday J E, Jarvis L, Gough M W and Rowland A P, 1992 Control of bracken and the restoration of heathland. IV. Effects of bracken control and heathland restoration treatments on nutrient distribution and soil chemistry. J. Appl. Ecol. 29, 218–225.
Google Scholar
Mahaffee W and Kloepper J 1997 Temporal changes in the bacterial communities of soil, rhizosphere, and endorhiza associated with field-grown cucumber (Cucumis sativus L.). Microb. Ecol. 34, 210–223.
Google Scholar
Massol-Deya A, Weller R, Rios-Hernandez L, Zhou J Z, Hickey R F and Tiedje J M 1997 Succession and convergence of biofilm communities in fixed-film reactors treating aromatic hydrocarbons in groundwater. Appl. Environ. Microbiol. 63, 270–276.
Google Scholar
Meharg A A and Killham K 1995 Loss of exudates from the roots of perennial ryegrass inoculated with a range of micro-organisms. Plant Soil 170, 345–349.
Google Scholar
Mozafar A, Duss F and Oertli J J 1992 Effect of Pseudomonas flourescens on the root exudates of two tomato mutants differently sensitive to Fe chlorosis. Plant Soil 144, 167–176.
Google Scholar
Munson M A, Nedwell D B and Embley TM 1997 Phylogenetic diversity of Archaea in sediment samples from a coastal salt marsh. Appl. Environ. Microbiol. 63, 4729–4733.
Google Scholar
Newman E I 1985 The rhizosphere: carbon sources and microbial populations. In Ecological interactions in soil. Ed. A H Fitter. pp. 107–121. Blackwell Scientific Publications, Oxford.
Google Scholar
Page C N 1976 The taxonomy and phytogeography of bracken–a review. Bot. J. Linn. Soc. 73, 1–34.
Google Scholar
Page C N 1989 Three subspecies of bracken, Pteridium aquilinum (l.) Kuhn, in Britain. Watsonia 17, 429–434.
Google Scholar
Pakeman R J and Marrs R H 1996 Modelling the effects of climate change on the growth of bracken (Pteridium aquilinum) in Britain. J. Appl. Ecol. 33, 561–575.
Google Scholar
Pakeman R J, Marrs R H and Jacob P J 1994 A model of bracken fern (Pteridium aquilinum) growth and the effects of control strategies and changing climate. J. Appl. Ecol. 31, 145–154.
Google Scholar
Palleroni N J 1993 Pseudomonas classification: A new case history in the taxonomy of Gram-negative bacteria. Antonie van Leeuwenhoek 64, 231–251.
Google Scholar
Paul E A and Clark F E 1996 Soil Microbiology and Biochemistry. pp. 74, 82–86. 2nd. Ed., Academic Press, USA.
Google Scholar
Porteous L A, Seidler R J and Watrud L S 1997 An improved method for purifying DNA from soil for polymerase chain reaction amplification and molecular ecology applications. Mol. Ecol. 6, 787–791.
Google Scholar
Robinson D and Fitter A 1999 The magnitude and contol of carbon transfer between plants linked by a common mycorrhizal network. J. Exp. Bot. 50, 9–13.
Google Scholar
Schmidt T M, De Long E F and Pace N R 1991 Analysis of a marine picoplankton community by 16S rRNA gene cloning and sequencing J. Bacteriol. 173, 4371–4378.
Google Scholar
Snedcor G W and Cochran W G 1980 Statistical Methods. Iowa state University Press, Ames, IA. 507 pp.
Google Scholar
Thomson J A 2000 Morphological and genomic diversity in the genus Pteridium (Dennstaedtiaceae). Ann. Bot. 85b, 77–79.
Google Scholar
Tilman D, Knops J, Wedin D, Reich P, Ritchie M and Siemann E 1997 The influence of functional diversity and composition on ecosystem processes. Science 277, 1300–1302.
Google Scholar
Van der Heijden M G A, Klironomos J N, Ursic M, Moutoglis P, Streitwolf-Engel R, Boller T, Wiemken A and Sanders I R 1998a Mycorrhizal fungal diversity determines plant biodiversity, ecosystem variability and productivity. Nature 396, 69–72.
Google Scholar
Van der Heijden M G A, Boller T, Wiemken A and Sanders I R 1998b Different arbuscular mycorrhizal fungal species are potential determinants of plant community structure. Ecology 79, 2082–2091.
Google Scholar
Whitehead S J, Caporn S J M and Press MC 1997 Effects of elevated CO2, nitrogen and phosphorus on the growth and photosynthesis of two upland perennials: Calluna vulgaris and Pteridium aquilinum. New Phytol. 135, 201–211.
Google Scholar
Widmer F, Seidler R J, Gillevet P M, Watrud L S and DiGiovanni G D 1998 A highly selective PCR protocol for detecting 16S rRNA genes of the genus Pseudomonas (sensu stricto) in environmental samples. Appl. Environ. Microbiol. 64, 2545–2553.
Google Scholar