Low shrub cover in alvar grasslands increases small-scale diversity by promoting the occurrence of generalist species

Tuexenia

Volumn 33, Issue 1, 2013, Pages 293-308

  Kasari, Liis ^a   Gazol, Antonio ^a   Kalwij, Jesse M ^a,b   Helm, Aveliina ^a  

^a UNIVERSITY OF TARTU   (Estonia)

^b UNIVERSITY OF JOHANNESBURG   (South Africa)

Author keywords

Alvar grassland; Grassland conservation; Species richness; Structural equation modelling; Woody plants

Indexed keywords

EID: 84887798577     PISSN: 0722494X     EISSN: None     Source Type: Journal    
DOI: None     Document Type: Article

References (51)

1. Aavik, T., Jõgar, U., Liira, J., Tulva, I. & Zobel, M. (2008): Plant diversity in a calcareous wood-ed meadow - The significance of management continuity. - J. Veg. Sci. 19: 475-484.
2. Arbuckle, J.L. (2010): Amos (Version 19) [Computer Program]. - Chicago, IL, USA: SPSS.
3. Bekele, A. & Hudnall, W.H. (2006): Spatial variability of soil chemical properties of a prairie-forest transition in Louisiana. - Plant Soil 280: 7-21.
4. Boch, S. & Dengler, J. (2006): Floristische und ökologische Charakterisierung sowie Phytodiversität der Trockenrasen auf der Insel Saaremaa (Estland). - In: BÜLTMANN, H., FARTMANN, T. & HASSE, T. (Eds.): Trockenrasen auf unterschiedlichen Betrachtungsebenen: 55-71. Institut für Land-schaftsökologie, Münster.
5. Callaway, R.M. (2007): Positive interactions and interdependence in plant communities. - Springer, Dordrecht: 415 pp.
6. Ceballos, G., Davidson, A., List, R., Pacheco, J., Manzano-Fischer, P., Santos-Barrera, G. & Cruzado, J. (2010): Rapid decline of a grassland system and its ecological and conservation im-plications. - PLoS One 5: e8562.
7. Clark, D.B., Clark, D.A. & Read, J.M. (1998): Edaphic variation and the mesoscale distribution of tree species in a neotropical rainforest. - J. Ecol. 86: 101-112.
8. EMHI (2011): Estonian Meteorological and Hydrological Institute. - URL: http://www.emhi.ee [ac-cessed 2011-04-26].
9. ESRI (2004): ArcGIS Desktop (Release 9.2.). - Redlands, California, USA: Environmental Systems Research Institute.
10. Ettema, C.H. & Wardle, D.A. (2002). Spatial soil ecology. - Trends Ecol. Evol. 17: 177-183.
11. Franco, A.C. & Nobel, P.S. (1989): Effect of nurse plants on the microhabitat and growth of cacti. - J. Ecol. 77: 870-886.
12. Gazol, A., Tamme, R., Takkis, K., Kasari, L., Saar, L., Helm, A. & Pärtel, M. (2012): Land-scape- and small-scale determinants of grassland species diversity: direct and indirect influences. - Ecography 35: 1-8.
13. Grace, J.B. (2006): Structural equation modeling and natural systems. - Cambridge Univ. Press, Cambridge: 365 pp.
14. Grime, J.P. (2002): Plant strategies, vegetation processes, and ecosystem properties. - John Wiley & Sons, Chichester: 456 pp.
15. Haugo, R.D., Bakker, J.D. & Halpern, C.B. (2013): Role of biotic interactions in regulating conifer invasion of grasslands. - Forest Ecol. Manag. 289: 175-182.
16. Helm, A. (2011): Eesti loopealsed ja kadastikud. Juhend koosluste hooldamiseks ja taastamiseks (Al-var grasslands and juniper shrublands in Estonia. Instructions for habitat management and restora-tion) [in Estonian]. - Guide for Estonian Environmental Board.
17. Helm, A., Hanski, I. & Pärtel, M. (2006): Slow response of plant species richness to habitat loss and fragmentation. - Ecol. Lett. 9: 72-77.
18. Huxman, T.E., Wilcox, B.P., Breshears, D.D., Scott, R.L., Snyder, K.A., Small, E.E., Hul-Tine, K., Pockman, W.T. & Jackson, R.B. (2005): Ecohydrological implications of woody plant encroachment. - Ecology 86: 308-319.
19. Jobbagy, E.G. & Jackson, R.B. (2003): Patterns and mechanisms of soil acidification in the conver-sion of grasslands to forests. - Biogeochemistry 64: 205-229.
20. Kiviniemi, K. & Eriksson, O. (2002): Size-related deterioration of semi-natural grassland fragments in Sweden. - Divers. Distrib. 8: 21-29.
21. Kukk, T. (1999): Eesti taimestik (Flora of Estonia) [in Estonian]. - Teaduste Akadeemia Kirjastus, Tartu: 464 pp.
22. Laanisto, L., Tamme, R., Hiiesalu, I., Szava-Kovats, R., Gazol, A. & Pärtel, M. (2012): Microfragmentation concept explains non-positive environmental heterogeneity-diversity relation-ships. - Oecologia 171: 217-226.
23. Laasimer, L. (1965): Eesti NSV taimkate (Flora of the Estonian SSR) [in Estonian]. - Valgus, Tallinn: 397 pp.
24. Limb, R.F., Engle, D.M., Alford, A.L. & Hellgren, E.C. (2010): Tallgrass prairie plant community dynamics along a canopy cover gradient of eastern redcedar (Juniperus virginiana L.). - Rangel. Ecol. Manag. 63: 638-644.
25. Liu, F., Wu, X.B., Bai, E., Boutton, T.W. & Archer, S.R. (2011): Quantifying soil organic carbon in complex landscapes: an example of grassland undergoing encroachment of woody plants. - Glob. Chang. Biol. 7: 1119-1129.
26. Miwa, C.T. & Reuter, R.J. (2010): Persistence of western juniper (Juniperus occidentalis) resource islands following canopy removal. - Northwest Sci. 84: 361-368.
27. Öckinger, E., Eriksson, A.K & Smith, H.G. (2006): Effects of grassland abandonment, restoration and management on butterflies and vascular plants. - Biol. Conserv. 133: 291-300.
28. Paal, J. (1997): Eesti taimkatte kasvukohatüüpide klassifikatsioon (Classification of Estonian vegeta-tion site types) [in Estonian]. - Tartu Ülikooli Botaanika ja Ökoloogia Instituut, Tallinn: 297 pp.
29. Pärtel, M. & Helm, A. (2007): Invasion of woody species into temperate grasslands: Relationship with abiotic and biotic soil resource heterogeneity. - J. Veg. Sci. 18: 63-70.
30. Pärtel, M., Helm, A., Reitalu, T., Liira, J. & Zobel, M. (2007): Grassland diversity related to the Late Iron Age human population density. - J. Ecol. 95: 574-582.
31. Pärtel, M., Kalamees, R., Zobel, M. & Rosén, E. (1999a): Alvar grasslands in Estonia: variation in species composition and community structure. - J. Veg. Sci. 10: 561-570.
32. Pärtel, M., Mändla, R. & Zobel, M. (1999b): Landscape history of a calcareous (alvar) grassland in Hanila, western Estonia, during the last three hundred years. - Landsc. Ecol. 14: 187-196.
33. Pausas, J.G. & Austin, M.P. (2001): Patterns of plant species richness in relation to different envi-ronments: An appraisal. - J. Veg. Sci. 12: 153-166.
34. Petřík, P., Černý, T. & Boublík, K. (2011): Impact of hoofed game and weather on the vegetation of endangered dry grasslands in the Křivoklátsko Biosphere Reserve (Czech Republic). - Tuexenia 31: 283-299.
35. Pihlgren, A. & Lennartsson, T. (2008): Shrub effects on herbs and grasses in semi-natural grass-lands: positive, negative or neutral relationships? - Grass Forage Sci. 63: 9-21.
36. Poschlod, P., Bakker, J.P. & Kahmen, S. (2005): Changing land use and its impact on biodiversity. - Basic Appl. Ecol. 6: 93-98.
37. Poska, A. & Saarse, L. (2002): Vegetation development and introduction of agriculture to Saaremaa Island, Estonia: the human response to shore displacement. - Holocene 12: 555-568.
38. Pykälä, J., Luoto, M., Heikkinen, R.K. & Kontulab, T. (2005): Plant species richness and persis-tence of rare plants in abandoned semi-natural grasslands in northern Europe. - Basic Appl. Ecol. 6: 25-33.
39. Rejmánek, M. & Rosén, E. (1988): The effects of colonizing shrubs (Juniperus communis and Poten-tilla fruticosa) on species richness in the grasslands of Stora Alvaret, Öland (Sweden). - Acta Phy-togeogr. Suec. 76: 67-72.
40. Rejmánek, M. & Rosén, E. (1992): Influence of colonizing shrubs on species-area relationships in alvar plant-communities. - J. Veg. Sci. 3: 625-630.
41. Rosén, E. (2006): Alvar vegetation of Öland - changes, monitoring and restoration. - Biol. Environ. 106B: 387-399.
42. Rosenthal, G., Schrautzer, J. & Eichberg, C. (2012): Low-intensity grazing with domestic herbi-vores: A tool for maintaining and restoring plant diversity in temperate Europe. - Tuexenia 32: 167-205.
43. Rūsiņa, S., Pušpure, I. & Gustiņa, L. (2013): Diversity patterns in transitional grassland areas in floodplain landscapes with different heterogeneity. - Tuexenia 33: 347-369.
44. Schaefer, C.A. & Larson, D.W. (1997): Vegetation, environmental characteristics and ideas on the maintenance of alvars on the Bruce Peninsula, Canada. - J. Veg. Sci. 8: 797-810.
45. Strijker, D. (2005): Marginal lands in Europe - causes of decline. - Basic Appl. Ecol. 6: 99-106.
46. Tamme, R., Hiiesalu, I., Laanisto, L., Szava-Kovats, R. & Pärtel, M. (2010): Environmental heterogeneity, species diversity and co-existence at different spatial scales. - J. Veg. Sci. 21: 796-801.
47. Tilman, D. (1982): Resource competition and community structure. - Princeton Univ. Press, Prince-ton, New Jersey: 296 pp.
48. Weber, H.E., Moravec, J., Theurillat, J.-P. (2000): International code of phytosociological no-menclature. 3rd edition. - J. Veg. Sci. 11: 739-768.
49. Wiens, J.A. (2000): Ecological heterogeneity: an ontogeny of concepts and approaches. - In: HUTCH-INGS, M.J., JOHN, E.A. & STEWART, A.J.A. (Eds.): The ecological consequences of environmental heterogeneity: 9-32. Blackwell Science, Oxford.
50. Wilson, J.B., Peet, R. K., Dengler, J. & Pärtel, M. (2012): Plant species richness: the world rec-ords. - J. Veg. Sci. 23: 796-802.
51. Znamenskiy, S., Helm, A. & Pärtel, M. (2006): Threatened alvar grasslands in NW Russia and their relationship to alvars in Estonia. - Biodivers. Conserv. 15: 1797-1809.