Effect of spatial scale on relationship between plant species richness and microclimate in a forested ecosystem

• Autorzy: Xu M. , Qi Y.
• Języki publikacji: EN

Abstrakty

EN

This study examined how the correlation between plant species richness and microclimate varies when aggregation scales change from 10 to 3000 m. We measured soil moisture and air, soil and soil surface temperatures in the Southeastern Missouri Ozarks. Measurement were taken every 10 m along a 4250 m transect during the 1996 growing season. Plants up to 2 m above ground were sampled using 1 x 1 m^2 plots to record average height and coverage by species. We found that the correlation between understory plant species richness and temperature was, in general, highly dependent on spatial scale. The correlation coefficients were small, or even negative, at small scales, and the highest correlation occured around the 1500 m scale. Univariate linear regression analysis at 1500 m scale indicated that growing season mean temperatures of air, soil, and soil surface explained 83%, 76%, and 74% of the total variance in species richness, respectively. Microclimate variables, including seasonal mean, minimum and maximum temperatures of air, soil, and soil surface and seasonal soil moisture, explained 98% of the total variance in plant species richness (R^2=0,98, n=277, P<0,01) at 1500m scale. The results from this study suggest that the species-energy theory was adequately supported at certain spatial scales (around 1500m in this case), but less supported at other scales within the range under study. The findings indicate the necessity, feasibility, and difficulty to incorporate spatial scales explicitly into the species-energy theory.

Słowa kluczowe

EN

microclimate; plant species richness; scale; species-energy theory

• Wydawca: Museum and Institute of Zoology, Polish Academy of Sciences
• Czasopismo: Polish Journal of Ecology
• Rocznik: 2000
• Tom: Vol. 48, nr 1
• Strony: 77--88
• Opis fizyczny: Bibliogr. 33 poz.

Twórcy

autor

Xu M.

• Department of Environmental Science, Policy and Management, University of California, 207 Giannini Hall 3310, Berkeley, CA 94720-3310, USA

autor

Qi Y.

• Department of Environmental Science, Policy and Management, University of California, 207 Giannini Hall 3310, Berkeley, CA 94720-3310, USA

• Department of Environmental Science, Policy and Management, University of California, 207 Giannini Hall #3310, Berkeley, CA 94720-3310, USA

Bibliografia

• [1]. Abramsky Z., Rosenzweig M.L. 1984 -Tilman's predicted productivity-diversity relationship shown by desert rodents - Nature, 309: 150-151.
• [2]. Adams J. M., Woodward F. I. 1989 - Patterns in tree species richness as a test of glacial extinction hypothesis - Nature, 339: 699-701.
• [3]. Auerbach M., Shmida A. 1987 - Spatial scale and the determinants of plant species richness - Trends in Ecology and Evolution (TREE), 2(8): 238-242.
• [4]. Bohning-Gaese K. 1997 - Determinants of avian species richness at different spatial scales - Journal of Biogeography, 24: 49-60.
• [5]. Brookshire B., Hauser C. 1993 - The Missouri Ozark Forest Ecosystem Project: The effect of forest management on the forest ecosystem - Internal Publications of Missouri Department of Conservation, 63 pp.
• [6]. Chikatunov V., Lillig M., Pavlicek T., Blaustei n L., Nevo E. 1997 - Biodiversity of insects at a microsite, `Evolution Canyon', Nahal Oren, Mt. Carmel - Israel - Journal of Arid Environments, 37: 367-377.
• [7]. Cody M.L. 1975 - Towards a theory of continental species diversities: bird distribution over Mediterranean habitat gradients. (In: Ecology and evolution of communities. Eds. M. L. Cody, J. M. Dia-mond) - Harvard University Press, Cambridge, pp. 214-257.
• [8]. Currie D.J. 1991 - Energy and large-scale patterns of animal - and plant-species richness - American Naturalist, 137(1): 27-49.
• [9]. Currie D. J., Paquin V. 1987 - Large-scale biogeographical patterns of species richness of trees - Nature, 329: 326-327.
• [10]. Greig-Smith P. 1982 - Quantitative plant ecology, University of California Press, 359 pp.
• [11]. Leathwick J.R., Burns B.R., Clarkson B.D. 1998 - Environmental correlates of tree alpha-diversity in New Zealand primary forests - Ecography, 21: 235-246.
• [12]. Levin S.A. 1992 - The problem of panem and scale in ecology - Ecology, 73: 1943-1967.
• [13]. Logerwell E.A., Hewitt R.P., Demer D.A. 1998 - Scale-dependent spatial variance patterns and correlations of seabirds and prey in the southeastern Bering Sea as revealed by spectral analysis - Ecography, 21: 212-223.
• [14]. Magurran A.E. 1988 - Ecological diversity and its measurement - Princeton University Press, Princeton, New Jersey, 179 pp.
• [15]. Moore D.R.J., Keddy P.A. 1989 - The relationship between species richness and standing crop in wetlands: The importance of scale - Vegetatio, 79: 99-106.
• [16]. Nevo E., Raz S., Beiles A. 1996 - Biodiversity of reptiles at "Evolution Canyon", lower Nahal Oren, Mount Carmel - Israel - Israel Journal of Zoology, 42: 395-402.
• [17]. O'Neill R.V. 1989 - Perspectives in hierarchy and scale. (In: Perspectives in ecological theory Eds. J. Roughgarden, R.M. May, S.A Levin) - Princeton University Press, Princeton, pp. 140-156.
• [18]. Owen J.G. 1988 - On productivity as a predictor of rodent and carnivore diversity - Ecology, 69: 1161-1165.
• [19]. Qi Y., Wu J.G. 1996 - Effects of changing spatial resolution on the results of landscape pattern analysis using spatial autocorrelation indices - Landscape Ecology, 11(1): 39-49.
• [20]. Pianka E.R. 1966 - Latitudinal gradients in species diversity: a review of concepts - The American Naturalist, 100(910): 33-46.
• [21]. Richerson P. J., Lum K. L. 1980 - Patterns of plant species diversity in California: relation to weather and topography - The American Naturalist, 116(4): 504-536.
• [22]. Ricklefs R.E. 1987 - Community diversity: relative roles of local and regional processes - Science, 235: 167-171.
• [23]. Rosenzweig M.L. 1997 - Species diversity in space and time - Cambridge University Press, 436 pp.
• [24]. Saunders S.C., Chen J., Crow T.R., Brosofske K.D. 1998 - Hierarchical relationships between landscape structure and temperature in a managed forest landscape - Landsc. Ecol. 13: 381-395.
• [25]. Schall J. J., Pianka E. R. 1978 - Geographical trends in numbers of species - Science, 201: 679-686.
• [26]. Tilman D. 1982 - Resource competition and community structure - Princeton University Press, Princeton, USA, 296 pp.
• [27]. Turner J.R.G., Lennon J.J, Lawrenson J.A. 1988 - British bird species distributions and the energy theory - Nature, 335: 539-541.
• [28]. Urban D.L., O'Neill R.V., Shugart H.H. 1987 - Landscape ecology - BioScience, 37: 119-127.
• [29]. Whittaker R.H. 1972 - Evolution and measurement of species diversity - Taxon, 21: 213-251.
• [30]. Wiens J.A., Addicott J.F., Case T.J., Diamond J. 1986 - Overview: the importance of spatial and temporal scale in ecological investigations. (In: Community ecology. Eds J. Diamond,. T. J. Case) - Harper and Row, New York, pp. 145-153.
• [31]. Wright D. H. 1983 - Species-energy theory: an extension of species-area theory - Oikos, 41: 496-506.
• [32]. Wright D. H., Currie D. J., Maurer B. A. 1993 - Energy supply and patterns of species richness on local and regional scales. In: Species diversity on ecological communities: historical and geographical perspectives. Eds. R. E. Ricklefs, D. Schluter) - The University of Chicago Press, Chicago, USA, 414 pp.
• [33]. Xu M., Chen J., Brookshire B.L. 1997 - Temperature and its variability in oak forests in the sout-heastern Missouri Ozarks - Climate Research, 8: 209-223.