Ecosystems

, Volume 9, Issue 4, pp 528–537

Genetic Identity of Populus tremuloides Litter Influences Decomposition and Nutrient Release in a Mixed Forest Stand

  • Michael Madritch
  • Jack R. Donaldson
  • Richard L. Lindroth
Article

Abstract

Recent research has shown that genetic variation can directly impact community and ecosystem level processes. Populus tremuloides (trembling aspen) is an extremely widespread and genetically diverse tree species important to many North American forest ecosystems. Using leaf litter from five genotypes grown in a common garden under two nutrient treatments, we tracked litter decomposition in a natural aspen stand for 1 year. Here we show that aspen leaf litter decomposes and releases carbon, nitrogen, and sulfur in relation to its genetic identity. In a secondary experiment, we show that the genetic diversity of aspen litter mixtures can influence decomposition, however weakly so. Overall, nutrient treatments influenced leaf litter decomposition the most, followed by genetic identity, and then by genetic diversity (if at all in some cases). In this widespread, genetically diverse, and dominant species, genetic variation within a single species is important to ecosystem functioning. The relatively weak effect of genetic diversity on the processes measured here does not preclude its importance to ecosystem functioning, but does suggest that genetic identity and composition are more important than genetic diversity per se.

Keywords

genotype tannin intraspecific genetic variation 

References

  1. Aber JD, Melillo JM, McClaugherty CA. 1990. Predicting long-term patterns of mass loss, nitrogen dynamics, and soil organic matter formation from initial fine litter chemistry in temperate forest ecosystems. Can J Bot 68:2201–8Google Scholar
  2. Bailey JK, Schweitzer JA, Rehill BJ, Lindroth RL, Martinsen GD, Whitham TG. 2004. Beavers as molecular geneticists: a genetic basis to the foraging of an ecosystem engineer. Ecology 85:603–8Google Scholar
  3. Booth RE, Grime JP. 2003. Effects of genetic impoverishment on plant community diversity. J Ecol 91:721–30CrossRefGoogle Scholar
  4. Bradford MA, Tordoff GM, Eggers T, Jones TH, Newington JE. 2002. Microbiota, fauna, and mesh size interactions in litter decomposition. Oikos 99:317–23CrossRefGoogle Scholar
  5. Chapman K, Whittaker JB, Heal OW. 1988. Metabolic and faunal activity in litters of tree mixtures compared with pure stands. Agric Ecosys Environ 24:33–40CrossRefGoogle Scholar
  6. Chase JM, Knight TM. 2003. Community genetics: towards a synthesis. Ecology 84:580–2Google Scholar
  7. Coleman DC, Crossley DA. 1996. Fundamentals of soil ecology. San Diego (CA): Academic PressGoogle Scholar
  8. Dawkins R. 1982. The extended phenotype. New York (NY): Oxford University PressGoogle Scholar
  9. Donaldson JR, Lindroth RL. 2004. Cottonwood leaf beetle (Coleoptera: Chrysomelidae) performance in relation to variable phytochemistry in juvenile aspen (Populus tremuloides Michx.). Environ Entomol 33:1505–11CrossRefGoogle Scholar
  10. Gartner TB, Cardon ZG. 2004. Decomposition dynamics in mixed-species leaf litter. Oikos 104:230–46CrossRefGoogle Scholar
  11. Hättenschwiler S, Vitousek PM. 2000. The role of polyphenols in terrestrial ecosystem nutrient cycling. Trends Ecol Evol 15:238–43PubMedCrossRefGoogle Scholar
  12. Hagerman AE, Butler CG. 1989. Choosing appropriate methods and standards for assaying tannin. J Chem Ecol 15:1795–810CrossRefGoogle Scholar
  13. Hernes PJ, Hedges JI. 2004. Tannin signatures of barks, needles, leaves, cones, and wood at the molecular level. Geochimica et Cosmochimica Acta 68:1293–307CrossRefGoogle Scholar
  14. Hoorens B, Aerts R, Stroetenga M. 2002. Litter quality and interactive effects in litter mixtures: more negative interactions under elevated CO2? J Ecol 90:1009–16CrossRefGoogle Scholar
  15. Hunter MD. 2001. Insect population dynamics meets ecosystem ecology: Effects of herbivory on soil nutrient dynamics. Agric Forest Entomol 3:77–84CrossRefGoogle Scholar
  16. King JS, Pregitzer KS, Zak DR, Kubiske ME, Ashby JA, Holmes WE. 2001. Chemistry and decomposition of litter from Populus tremuloides Michaux grown at elevated atmospheric CO2 and varying N availability. Global Change Biol 7:65–74CrossRefGoogle Scholar
  17. Kraus TEC, Zasoski RJ, Dahlgren RA, Horwath WR, Preston CM. 2004. Carbon and nitrogen dynamics in a forest soil amended with purified tannins from different plant species. Soil Biol Biochem 36:309–21CrossRefGoogle Scholar
  18. Ledig FT. 1992. Human impacts on genetic diversity in forest ecosystems. Oikos 63:87–108Google Scholar
  19. Lindroth RL, Roth S, Nordheim EV. 2001. Genotypic variation in response of quaking aspen (Populus tremuloides) to atmospheric CO2 enrichment. Oecologia 126:371–9CrossRefGoogle Scholar
  20. Lindroth RL, Osier TL, Barnhill HRH, Wood SA. 2002. Effects of genotype and nutrient availability on phytochemistry of trembling aspen (Populus tremuloides Michx.) during leaf senescence. Biochem Syst Ecol 30:297–307CrossRefGoogle Scholar
  21. Loreau M. 1998. Separating sampling and other effects in biodiversity experiments. Oikos 82:600–2Google Scholar
  22. Madritch MD, Hunter MD. 2002. Phenotypic diversity influences ecosystem functioning in an oak sandhills community. Ecology 83:2084–90CrossRefGoogle Scholar
  23. Madritch MD, Hunter MD. 2003. Intraspecific litter diversity and nitrogen deposition affect nutrient dynamics and soil respiration. Oecologia 136:124–8PubMedCrossRefGoogle Scholar
  24. Martinsen GD, Floate KD, Waltz AM, Wimp GM, Whitham TG. 2000. Positive interactions between leafrollers and other arthropods enhance biodiversity on hybrid cottonwoods. Oecologia 123:82–9CrossRefGoogle Scholar
  25. McIntyre PJ, Whitham TG. 2003. Plant genotype affects long-term herbivore population dynamics and extinction: Conservation implications. Ecology 84:311–22Google Scholar
  26. Melillo JM, Aber JD, Muratone JF. 1982. Nitrogen and lignin control of hardwood leaf litter decomposition dynamics. Ecology 63:621–6CrossRefGoogle Scholar
  27. Mitton JB, Grant MC. 1996. Genetic variation and the natural history of quaking aspen. Bioscience 46:25–31CrossRefGoogle Scholar
  28. Moore JC, Berlow EL, Coleman DC, de Ruiter PC, Dong Q, Hastings A, Johnson NC, McCann KS, Melville K, Morin PJ, Nadelhoffer K, Rosemond AD, Post DM, Sabo JL, Scow KM, Vanni MJ, Wall DH. 2004. Detritus, trophic dynamics and biodiversity. Ecol Lett 7:584–600CrossRefGoogle Scholar
  29. Nilsson MC, Wardle DA, Dahlberg A. 1999. Effects of plant litter species composition and diversity on the boreal forest plant-soil system. Oikos 86:16–26Google Scholar
  30. Pastor J, Bockheim JG. 1984. Distribution and cycling of nutrients in an aspen-mixed-hardwood-spodosol ecosystem in northern Wisconsin. Ecology 65: 339–53CrossRefGoogle Scholar
  31. Perala DA, Alm AA. 1990. Reproductive ecology of birch–a review. Forest Ecol Manag 32:1–38CrossRefGoogle Scholar
  32. Porter LJ, Hrstich LN, Chan BC. 1986. The conversion of procyanidins and prodelphinidins to cyaniding and delphinidin. Phytochemistry 25:223–30CrossRefGoogle Scholar
  33. Prescott CE, Kabzems R, Zabek LM. 1999. Effects of fertilization on decomposition rates of Populus tremuloides foliar litter in a boreal forest. Can J Forest Res 29:393–7CrossRefGoogle Scholar
  34. Prescott CE, Zabek LM, Staley CL, Kabzems R. 2000. Variability in litter quality and its relationship to litter decay in Canadian forests. Can J Bot 78:1269–87CrossRefGoogle Scholar
  35. Salamanca EF, Kaneko N, Katagiri S. 1998. Effects of leaf litter mixtures on the decomposition of Quercus serrata and Pinus densiflora using field and laboratory microcosm methods. Ecol Eng 10:53–73CrossRefGoogle Scholar
  36. Schädler M, Brandl R. 2005. Do invertebrate decomposers affect the disappearance rate of litter mixtures? Soil Biol Biochem 37:329–37CrossRefGoogle Scholar
  37. Schimel JP, Van Cleve K, Cates RG, Clausen TP, Reichardt PB. 1996. Effects of balsam poplar (Populus balsamifera) tannins and low molecular weight phenolics on microbial activity in taiga floodplain soil: implications for changes in N cycling during succession. Can J Bot 74:84–90Google Scholar
  38. Schweitzer JA, Bailey JK, Rehill BJ, Martinsen GD, Hart SC, Lindroth RL, Keim P, Whitham TG. 2004. Genetically based trait in a dominant tree affects ecosystem processes. Ecol Lett 7:127–34CrossRefGoogle Scholar
  39. Sellmer JC, McCown BH, Haissig BE. 1989. Shoot culture dynamics of 6 Populus clones. Tree Physiol 5:219–27PubMedGoogle Scholar
  40. Treseder KL, Vitousek PM. 2001. Potential ecosystem-level effects of genetic variation among populations of Metrosideros polymorpha from a soil fertility gradient in Hawaii. Oecologia 126:266–75CrossRefGoogle Scholar
  41. Vitousek PM, Mooney HA, Lubchenco L, Melillo JM. 1997. Human domination of Earth’s ecosystems. Science 277:494–9CrossRefGoogle Scholar
  42. Wardle DA, Bonner KI, Nicholson KS. 1997. Biodiversity and plant litter: experimental evidence which does not support the view that enhanced species richness improves ecosystem function. Oikos 79:247–58Google Scholar
  43. Whitham TG, Young WP, Martinsen GD, Gehring CA, Schweitzer JA, Shuster SM, Wimp GM, Fischer DG, Bailey JK, Lindroth RL, Woolbright S, Kuske CR. 2003. Community and ecosystem genetics: a consequence of the extended phenotype. Ecology 84:559–73Google Scholar
  44. Wimp GM, Young WP, Woolbright SA, Martinsen GD, Keim P, Whitham TG. 2004. Conserving plant genetic diversity for dependent animal communities. Ecol Lett 7:776–80CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media, Inc. 2006

Authors and Affiliations

  • Michael Madritch
    • 1
  • Jack R. Donaldson
    • 1
  • Richard L. Lindroth
    • 1
  1. 1.Department of EntomologyUniversity of WisconsinMadisonUSA

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