Biological Invasions

, Volume 8, Issue 2, pp 327–338 | Cite as

Invasive Plant and Experimental Venue Affect Tadpole Performance

  • Carrie J. Brown
  • Bernd Blossey
  • John C. Maerz
  • Steve J. Joule
Article

Abstract

Introductions of non-native predators and competitors appear to contribute to worldwide amphibian declines; however, potential negative impacts of invasive plants on habitat quality and amphibian populations have not been examined. Loss of diversity and alterations in ecosystem function associated with plant invasions may disrupt food webs, potentially leading to further declines of already threatened amphibian populations. We used a combination of small bins, mesocosms, and field experiments to examine the impacts of Eurasian purple loosestrife (Lythrum salicaria) replacing native cattails (Typha latifolia) in North American freshwater wetlands on survival, developmental rate, and diet (freshwater algae) of American toad (Bufo americanus) tadpoles. Tadpoles developed slower in L. salicaria compared to tadpoles developing in T. latifolia. This effect was consistent across experimental venues, although mesocosms showed this effect only in the second year of our study. Survival and development rates were always more variable in purple loosestrife than in cattail. In bins, tadpoles showed significantly reduced survival when raised in purple loosestrife extract and addition of leaf litter exacerbated this negative effect. Tadpole survival rates in mesocosms and field cages were not significantly different between plant species, most likely an effect of high variability among replicates. We suspect a combination of direct toxicity of high tannin concentrations in L. salicaria leaves and their indirect negative impacts on aquatic food webs are responsible for these results. Tadpole gut analyses revealed differences in algal communities among venues and between L. salicaria and T. latifolia suggesting that alterations in tadpole food quality and quantity contribute to the observed reduced tadpole performance. The replacement of native wetland plant species by L. salicaria does not represent a simple exchange of ecological equivalents and the function of invaded habitats for native species has clearly changed. While we were investigating only a single amphibian species, our results suggest that the impact of L. salicaria on ecosystem processes and aquatic food webs may be more general and likely to negatively affect other wetland species. The threats non-indigenous plants represent for amphibian populations and food webs may be underestimated, and warrant further investigation.

Keywords

amphibian declines food web effects freshwater algae invasion mesocosms 

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References

  1. Ahlgren, MO, Bowen, SH 1991Growth and survival of tadpoles (Bufo americanus) fed amorphous detritus derived from natural watersHydrobiologia2184951CrossRefGoogle Scholar
  2. Alford, RA, Harris, R 1988Effects of larval growth history on anuran metamorphosisThe Amercian Naturalist13191106Google Scholar
  3. Alford, RA, Richards, SJ 1999Global amphibian declines: a problem in applied ecologyAnnual Review of Ecology and Systematics30133165CrossRefGoogle Scholar
  4. Álvarez, D, Nicieza, AG 2002Effects of induced variation in anuran larval development on postmetamorphic energy reserves and locomotionOecologia131186195Google Scholar
  5. Bardsley, L, Beebee, TJC 2000Competition between Bufo larvae in a eutrophic pondOecologia1243339CrossRefGoogle Scholar
  6. Bärlocher, F, Biddiscombe, NR 1996Geratology and decomposition of Typha latifolia and Lythrum salicaria in a freshwater marshArchiv für Hydrobiologie136309325Google Scholar
  7. Berven, KA 1990Factors affecting population fluctuations in larval and adult stages of the wood frog (Rana sylvatica)Ecology7115991608Google Scholar
  8. Blaustein, AR, Kiesecker, JM 2002Complexity in conservation: lessons from the global decline of amphibian populationsEcology Letters5597608CrossRefGoogle Scholar
  9. Blossey, B 1999Before, during, and after: the need for long- term monitoring in invasive plant species managementBiological Invasions1301311CrossRefGoogle Scholar
  10. Bock, CE, Jones, ZF 2004Avian habitat evaluation: should counting birds count?Frontiers in Ecology and the Environment2403410Google Scholar
  11. Britson, CA, Kissell, REJ 1996Effects of food type on developmental characteristics of an ephemeral pond-breeding anuran, Pseudacris triseriata feriarumHerpetologica52374382Google Scholar
  12. Byers, JE, Goldwasser, L 2001Exposing the mechanism and timing of impact of nonindigenous species on native speciesEcology8213301343Google Scholar
  13. Carpenter, SR 1996Microcosm experiments have limited relevance for community and ecosystem ecologyEcology77677680Google Scholar
  14. Chapin, FS, Walker, BH, Hobbs, RJ, Hooper, DU, Lawton, JH, Sala, OE, Tilman, D 1997Biotic control over the functioning of ecosystemsScience277500504Google Scholar
  15. Clesceri LS and Eaton AD (eds) (1998) Standard Methods for Examination of Water and Wastewater, Vol, pp 5–51, American Public Health Association, Method #5550Google Scholar
  16. Conant, R, Collins, JT 1998A Field Guide to Reptiles and Amphibians of Eastern and Central North America Vol.Houghton Mifflin CompanyBostonGoogle Scholar
  17. Doak, DF 1994Source-sink models and the problem of habitat degradation: general models and applications to the Yellowstone grizzlyConservation Biology913701379Google Scholar
  18. Driebe, E, Whitham, TG 2000Cottonwood hybridization affects tannin and nitrogen content of leaf litter and alters decompositionOecologia12399107CrossRefGoogle Scholar
  19. Emery, SL, Perry, JA 1996Decomposition rates and phosphorus concentrations of purple loosestrife (Lythrum salicaria) and cattail (Typha spp.) in fourteen Minnesota wetlandsHydrobiologia323129138Google Scholar
  20. Farlowe, V 1928Algae of ponds as determined by an examination of the intestinal contents of tadpolesBiological Bulletin55443448Google Scholar
  21. Findlay, SEG, Arsuffi, TL 1989Microbial growth and detritus transformations during decomposition of leaf litter in a streamFreshwater Biology21261269Google Scholar
  22. Gosner, KL 1960A simplified table for staging anuran embryos and larvae with notes on identificationHerpetologica16183190Google Scholar
  23. Grout, JA, Levings, CD, Richardson, JS 1997Decomposition rates of purple loosestrife (Lythrum salicaria) and Lyngbyei’s sedge (Carex lyngbyei) in the Fraser River estuaryEstuaries2096102Google Scholar
  24. Holomuzki, JR 1997Habitat-specific life-histories and foraging by stream-dwelling American toadsHerpetologica53445453Google Scholar
  25. Houlahan, JE, Findlay, CS, Schmidt, BR, Meyer, AH, Kuzmin, SL 2000Quantitative evidence for global amphibian population declinesNature404752755PubMedCrossRefGoogle Scholar
  26. Irons, JGI, Oswood, MW, Bryant, JP 1988Consumption of leaf detritus by a stream shredder: influence of tree species and nutrient statusHydrobiologia1605361Google Scholar
  27. Johnson, LM 1991Growth and development of larval northern cricket frogs (Acris crepitans) in relation to phytoplankton abundanceFreshwater Biology255159Google Scholar
  28. Knops, JMH, Bradley, KL, Wedin, DA 2002Mechanisms of plant species impacts on ecosystem nitrogen cyclingEcology Letters5454466CrossRefGoogle Scholar
  29. Kupferberg, SJ 1997The role of larval diet in anuran metamorphosisAmerican Zoologist37146159Google Scholar
  30. Kupferberg, SJ, Marks, JC, Power, ME 1994Effects of variation in natural algal and detrital diets on larval anuran (Hyla regilla) life-history traitsCopeia1994446457Google Scholar
  31. Maerz JC, Brown CJ, Chapin CT and Blossey B (2005) Plant secondary metabolites affect larval amphibian performance. Functional Ecology (submitted)Google Scholar
  32. Miki, T, Kondoh, M 2002Feedbacks between nutrient cycling and vegetation predict plant species coexistence and invasionEcology Letters5624633CrossRefGoogle Scholar
  33. Morey, S, Reznik, D 2001Effects of larval density on postmetamorphic spadefoot toads (Spea hammondii)Ecology82510522Google Scholar
  34. Morin, PJ 1983Predation, competition, and the composition of larval anuran guildsEcological Monographs53119138Google Scholar
  35. Naeem, S, Hahn, DR, Schuurman, G 2000Producer-decomposer co-dependency influences biodiversity effectsNature403762764PubMedCrossRefGoogle Scholar
  36. Oksanen, L 2001Logic of experiments in ecology: is pseudoreplication a pseudoissue?Oikos942738Google Scholar
  37. Petersen, JE, Hastings, A 2001Dimensional approaches to scaling experimental ecosystems: designing mousetraps to catch elephantsAmerican Naturalist157324333PubMedGoogle Scholar
  38. Pope, SE, Fahrig, L, Merriam, HG 2000Landscape complementation and metapopulation effects on Leopard frog populationsEcology8124982508Google Scholar
  39. Rauha, JP, Wolfender, JL, Salminen, JP, Pihlaja, K, Hostettmann, K, Vuorela, H 2001Characterization of the polyphenolic composition of purple loosestrife (Lythrum salicaria)Zeitschrift für Naturforschung561320PubMedGoogle Scholar
  40. Relyea, RA, Hoverman, JT 2003The impact of larval predators and competitors on the morphology and fitness of juvenile treefrogsOecologia134596604PubMedGoogle Scholar
  41. Rosenthal, GAJanzen, DH eds. 1979Herbivores: Their Interaction with Secondary Plant MetabolitesAcademic PressNew YorkVolGoogle Scholar
  42. Schmidt, KA, Whelan, CJ 1999Effects of exotic Lonicera and Rhamnus on songbird nest predationConservation Biology1315021506Google Scholar
  43. Scott, DE 1994The effect of larval density on adult demographic traits in amphibians in Ambystoma opacumEcology7513831396Google Scholar
  44. Semlitsch, RD 1998Biological delineation of terrestrial buffer zones for pond-breeding salamandersConservation Biology1211131119Google Scholar
  45. Semlitsch, RD, Scott, DE, Pechmann, JHK 1988Time and size at metamorphosis related to adult fitness in Ambystoma talpoideumEcology69184192Google Scholar
  46. Skelly, DK 2002Experimental venue and estimation of interaction strengthEcology8320972101Google Scholar
  47. Skelly, DK, Kiesecker, JM 2001Venue and outcome in ecological experiments: manipulations of larval anuransOikos94198208CrossRefGoogle Scholar
  48. Smith, DC 1987Adult recruitment in chorus frogs – effects of size and date at metamorphosisEcology68344350Google Scholar
  49. Steinwascher, K, Travis, J 1983Influence of food quality and quantity on early larval growth of two anuransCopeia1983238242Google Scholar
  50. Stuart, SN, Chanson, JS, Cox, NA, Young, BE, Rodrigues, ASL, Fischman, DL, Waller, RW 2004Status and trends of amphibian declines and extinctions worldwideScience30617831786PubMedCrossRefGoogle Scholar
  51. Suberkropp, K, Godshalk, GL, Klug, MJ 1976Changes in the chemical composition of leaves during processing in a woodland streamEcology57720727Google Scholar
  52. Templer, P, Findlay, S, Wigand, C 1998Sediment chemistry associated with native and non-native emergent macrophytes of a Hudson River marsh ecosystemWetlands187078CrossRefGoogle Scholar
  53. Thompson, DQ, Stuckey, RL, Thompson, EB 1987Spread, Impact, and Control of Purple Loosestrife (Lythrum salicaria) in North American WetlandsUS Fish and Wildlife ServiceWashington, DC, USAGoogle Scholar
  54. Horne, B 1983Density as a misleading indicator of habitat qualityJournal of Wildlife Management47893901Google Scholar
  55. Wedin, DA, Tilman, D 1990Species effect on nitrogen cycle: a test with perennial grassesOecologia844333441Google Scholar
  56. Wilbur, HM 1977Density-dependent aspects of growth and metamorphosis in Bufo americanusEcology58196200Google Scholar
  57. Wright, AH, Wright, AA 1949Handbook of Frogs and Toads of the United States and CanadaComstock Publishing CompanyIthaca, New YorkGoogle Scholar

Copyright information

© Springer 2006

Authors and Affiliations

  • Carrie J. Brown
    • 1
  • Bernd Blossey
    • 1
  • John C. Maerz
    • 1
  • Steve J. Joule
    • 2
    • 3
  1. 1.Department of Natural ResourcesCornell UniversityIthacaUSA
  2. 2.Ft. Drum Military InstallationFt. DrumUSA
  3. 3.New York Department of Environmental ConservationBureau of WildlifeNew PaltzUSA

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