Abstract
To better understand the competitive processes involved in invasion by congeners, we examine coexistence patterns of two invasive species, Carduus nutans and C. acanthoides, at three spatial scales. A roadside survey of 5 × 5 km blocks in a previously identified overlap zone provided information about the regional scale. At smaller scales, we surveyed four fields of natural co-occurrence, quantifying the spatial patterns at the field scale by randomly placed 1 × 1 m quadrats and at the smallest scale by detailing plant position within the quadrats. The patterns observed are strikingly different at the different scales. At the regional scale, there is positive local autocorrelation in both species but negative cross-correlation between them, consistent with previous surveys. However, at the field scale, there is positive local autocorrelation in both species, and we generally see a positive association between the two species. At the plot scale, when excluding areas of joint absence, there is again a negative association between the two species. This pattern can also be seen at the field scale when excluding plots with joint absence. These results suggest that, at the scale of a field, the strongest factor determining location is aggregation in favorable habitats, which is a stronger force than the competition-induced segregation evidenced at small scales. Lottery competition for spatially aggregated safe sites thus appears to drive the patterns observed at the field scale, while the regional scale pattern may be a result of restricted natural dispersal and invasion history.
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References
Allen M, Shea K (2006) Spatial segregation of congeneric invaders in central Pennsylvania, USA. Biol Invasions 8:509–521
Batra SWT (1978) Carduus thistle distribution and biological control in the northeastern states. In: Frick KE (ed) Biological control of the genus Carduus in the United States—a progress report, pp 18–22, science and education administration, US. Department of Agriculture, Washington, DC
Bjørnstad ON (2009) ncf: spatial nonparametric covariance functions. R package version 1.1–3. http://CRAN.R-project.org/package=ncf
Bjørnstad ON, Falck W (2001) Nonparametric spatial covariance functions: estimation and testing. Environ Ecol Stat 8:53–70
Bolker BM, Pacala SW (1999) Spatial moment equations for plant competition: understanding spatial strategies and the advantages of short dispersal. Am Nat 153:575–602
Bullock JM, Edwards RJ, Carey PD, Rose RJ (2000) Geographical separation of two Ulex species at three spatial scales: does competition limit species’ ranges? Ecography 23:257–271
Cole BJ (1983) Assembly of mangrove ant communities—patterns of geographical-distribution. J Anim Ecol 52:339–347
Collingham YC, Wadsworth RA, Huntley B, Hulme PE (2000) Predicting the spatial distribution of non-indigenous riparian weeds: issues of spatial scale and extent. J Appl Ecol 37:13–27
Dale MRT (1999) Spatial pattern analysis in plant ecology. Cambridge University Press, Cambridge
Desrochers AM, Bain JF, Warwick SI (1988) The biology of Canadian weeds 89. Carduus nutans L. and Carduus acanthoides L. Can J Plant Sci 68:1053–1068
Diamond JM (1975) Assembly of species communities. In: Cody ML, Diamond JM (eds) Ecology and evolution of communities, pp 342–444. Belknap Press of Harvard University Press, Cambridge, MA
ESRI (1999-2001) ArcGIS Desktop, Version 8.3
Feldman SR, Lewis JP (1990) Output and dispersal of propagules of Carduus acanthoides L. Weed Res 30:161–169
Fitzpatrick MC, Weltzin JF, Sanders NJ, Dunn RR (2007) The biogeography of prediction error: why does the introduced range of the fire ant over-predict its native range? Glob Ecol Biogeogr 16:24–33
Fitzpatrick MC, Dunn RR, Sanders NJ (2008) Data sets matter, but so do evolution and ecology. Glob Ecol Biogeogr 17:562–565
Fowler NL (1988) What is a safe site—neighbor, litter, germination date, and patch effects. Ecology 69:947–961
Freckleton RP, Watkinson AR (2002) Large-scale spatial dynamics of plants: metapopulations, regional ensembles and patchy populations. J Ecol 90:419–434
Goldberg DE, Barton AM (1992) Patterns and consequences of interspecific competition in natural communities—a review of field experiments with plants. Am Nat 139:771–801
Hart DR, Gardner RH (1997) A spatial model for the spread of invading organisms subject to competition. J Math Biol 35:935–948
Hegi G (1987) Carduus distel. llustrierte Flora von Mitteleuropa, Paul Parey, Berlin
Julien MH and Griffiths MW (1999) Biological control of weeds: a world catalogue of agents and their target weeds. 4th edn
Kelly D and Popay AI (1985) Pasture production lost to unsprayed thistles at two sites.In: Proceedings of the 38th New Zealand weed and pest control conference. pp 115–118
Kok LT (2001) Classical biological control of nodding and plumeless thistles. Biol Control 21:206–213
Kok LT, Mays WT (1991) Successful biological control of plumeless thistle, Carduus acanthoides L. [Campanulatae: Asteraceae (=Compositae) by Trichosirocalus horridus (Panzer) (Coleoptera:Curculionidae) in Virginia. Biol Control 1:197–202
Kok LT, Surles WW (1975) Successful biocontrol of musk thistles by an introduced weevil, Rhinocyllus conicus. Environ Entomol 4:1025–1027
Komonen A (2005) Local spatial pattern in the occurrence of two congeneric wood-decaying fungi in an old-growth boreal forest. Scand J For Res 20:393–399
Krebs CJ (1989) Ecological methodology. Harper & Row, New York, p 654
Legendre P (1993) Spatial autocorrelation—trouble or new paradigm. Ecology 74:1659–1673
Legendre P, Fortin MJ (1989) Spatial pattern and ecological analysis. Vegetatio 80:107–138
Levin SA (1989) Challenges in the development of a theory of ecosystem structure and function. In: Roughgarden J, May RM, Levin SA (eds) Perspectives in ecological theory. Princeton Univeristy Press, Princeton, NJ
Levin SA (1992) The problem of pattern and scale in ecology. Ecology 73:1943–1967
McCarty MK (1982) Musk thistle (Carduus thoermeri) seed production. Weed Sci 30:441–445
McCarty MK, Scifres CJ, Smith AL, Horst GL (1969) Germination and early seedling development of musk and plumeless thistles. University of Nebraska, Nebraska, pp 1–28
Medd RW, Smith RCG (1978) Prediction of potential distribution of Carduus-Nutans (Nodding Thistle) in Australia. J Appl Ecol 15:603–612
Moore RJ, Mulligan GA (1956) Natural hybridization between Carduus acanthoides and Carduus nutans in Ontario. Can J Bot 34:71–85
Murrell DJ, Law R (2003) Heteromyopia and the spatial coexistence of similar competitors. Ecol Lett 6:48–59
Pacala SW (1986) Neighborhood models of plant-population dynamics.2. multispecies models of annuals. Theor Popul Biol 29:262–292
Pauchard A, Shea K (2006) Integrating the study of non-native plant invasions across spatial scales. Biol Invasions 8:399–413
Pauchard A, Alaback PB, Edlund EG (2003) Plant invasions in protected areas at multiple scales: linaria vulgaris (Scrophulariaceae) in the west Yellowstone area. West N Am Nat 63:416–428
Poll M, Naylor BJ, Alexander JM, Edwards PJ, Dietz H (2009) Seedling establishment of Asteraceae forbs along altitudinal gradients: a comparison of transplant experiments in the native and introduced ranges. Divers Distrib 15:254–265
Purves DW, Law R (2002) Fine-scale spatial structure in a grassland community: quantifying the plant’s-eye view. J Ecol 90:121–129
R Development Core Team (2010) R: A language and environment for statistical computing. Austria: R Foundation for statistical computing, Vienna
Rauschert ESJ (2006) Competitive interactions and associations of the invasive thistles Carduus nutans and C. acanthoides. Ph.D. thesis, Intercollege graduate degree program in ecology, The Pennsylvania State University, University Park, p 253
Rhodes AF, Block TA (2000) The plants of Pennsylvania: an illustrated manual. University of Pennsylvania Press, Philadelphia
Seabloom EW, Bjørnstad ON, Bolker BM, Reichman OJ (2005) Spatial signature of environmental heterogeneity, dispersal, and competition in successional grasslands. Ecol Monogr 75:199–214
Shea K, Kelly D (1998) Estimating biocontrol agent impact with matrix models: Carduus nutans in New Zealand. Ecol Appl 8:824–832
Sindel BM (1991) A review of the ecology and control of thistles in Australia. Weed Res 31:189–201
Skarpaas O, Shea K (2007) Dispersal patterns, dispersal mechanisms, and invasion wave speeds for invasive thistles. Am Nat 170:421–430
Skinner K, Smith L, Rice P (2000) Using noxious weed lists to prioritize targets for developing weed management strategies. Weed Sci 48:640–644
Sokal RR, Rohlf FJ (1995) Biometry: the principles and practice of statistics in biological research. W.H. Freeman and Company, New York
Stoll P, Bergius E (2005) Pattern and process: competition causes regular spacing of individuals within plant populations. J Ecol 93:395–403
USDA-NRCS (2010) The PLANTS database (http://plants.usda.gov). Accessed 15 January 2010
Warwick SI, Thompson BK (1989) The mating system in sympatric populations of Carduus-Nutans, C-Acanthoides and their hybrid swarms. Heredity 63:329–337
Warwick SI, Bain JF, Wheatcroft R, Thompson BK (1989) Hybridization and introgression in Carduus-Nutans and Carduus- Acanthoides reexamined. Systematic Botany 14:476–494
Wiens JA (1989) Spatial scaling in ecology. Funct Ecol 3:385–397
Wilson JB (1988) Community structure in the flora of islands in lake Manapouri, New-Zealand. J Ecol 76:1030–1042
Winston MR (1995) Cooccurrence of morphologically similar species of stream fishes. Am Nat 145:527–545
Acknowledgments
This research was partially supported by USDA-CSREES (Biology of Weedy and Invasive Plants) NRI grant #2002-35320-1228 to KS and a NASA Space Grant Fellowship to ER. We wish to thank Zeynep Sezen and Olav Skarpaas for support throughout the project, two anonymous families for the use of their fields and John Mellon, Jeff Butterbaugh, Elizabeth Dlugosz, Adam Reese, Stephen Selego and Gabby Hrycyshyn for field assistance. Eelke Jongejans, Zeynep Sezen and Olav Skarpaas provided useful comments on the manuscript.
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Rauschert, E.S.J., Shea, K. & Bjørnstad, O.N. Coexistence patterns of two invasive thistle species, Carduus nutans and C. acanthoides, at three spatial scales. Biol Invasions 14, 151–164 (2012). https://doi.org/10.1007/s10530-011-9992-z
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DOI: https://doi.org/10.1007/s10530-011-9992-z