Wardle, Glenda - University of Sydney - School of Biological Sciences

研究领域

My research focuses on the ecological and evolutionary processes that shape the spatial and temporal patterns of variation found in natural populations. On a conceptual level I want to combine our understanding of microevolutionary processes such as selection, genetic structure of populations, and gene flow, with the ecological processes of age structure, recruitment, dispersal, and dormancy. I have begun this work on life history variation by integrating studies of selection and demography to explain the coexistence of two life history types within populations of a short lived plant, Campanula americana . I used a matrix population model to quantify the contribution of winter annuals and biennials to the population growth rate and to evaluate the role of the soil seed bank . My general approach to research involves combining field work in natural populations with greenhouse experiments and mathematical modeling. My current research is on the comparative demography of four native Australian species of Trachymene (Apiaceae) with life history types which include: annual, biennial or perennial. The projects which I have recently supervised include: The population biology, canopy seed bank dynamics and early seedling growth characteristics of two gymnosperm species: Callitris muelleri and Callitris rhomboidea. The distribution of four Banksia species in relation to a soil moisture gradient. The population biology and reproductive ecology of a rare and endangered species, Trachymene scapigera. I am interested in supervising students who want to combine experimental and field based studies of native Australian plants or projects that combine a theoretical and an empirical approach to plant ecology or evolution.

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Frank, A., Wardle, G., Greenville, A., Dickman, C. (2016). Cattle removal in arid Australia benefits kangaroos in high quality habitat but does not affect camels. Rangeland Journal, 38(1), 73-84. [More Information] Popic, T., Davila, Y., Wardle, G. (2016). Cheater or mutualist? Novel florivory interaction between nectar-rich Crotalaria cunninghamii and small mammals. Austral Ecology, 41(4), 396-404. [More Information] Tredennick, A., Adler, P., Grace, J., Harpole, W., Borer, E., Seabloom, E., Anderson, T., Bakker, J., Biederman, L., Brown, C., Wardle, G., et al (2016). Comment on “Worldwide evidence of a unimodal relationship between productivity and plant species richness�? Science, 351(6272), 457-a-457-a. [More Information] Kwok, A., Wardle, G., Greenville, A., Dickman, C. (2016). Long-term patterns of invertebrate abundance and relationships to environmental factors in arid Australia. Austral Ecology, 41, 480-491. [More Information] Greenville, A., Wardle, G., Nguyen, V., Dickman, C. (2016). Population dynamics of desert mammals: similarities and contrasts within a multispecies assemblage. Ecosphere, 7(5), 1-19. [More Information] Kerr, N., Baxter, P., Salguero-Gomez, R., Wardle, G., Buckley, Y. (2016). Prioritizing management actions for invasive populations using cost, efficacy, demography and expert opinion for 14 plant species world-wide. Journal of Applied Ecology, 53(2), 305-316. [More Information] Greenville, A., Wardle, G., Nguyen, V., Dickman, C. (2016). Spatial and temporal synchrony in reptile population dynamics in variable environments. Oecologia, 182, 475-485. [More Information] Morgan, J., Dwyer, J., Price, J., Prober, S., Power, S., Firn, J., Moore, J., Wardle, G., Seabloom, E., Borer, E., et al (2016). Species origin affects the rate of response to interannual growing season precipitation and nutrient addition in four Australian native grasslands. Journal of Vegetation Science, in press. [More Information] Emery, N., Henwood, M., Offord, C., Wardle, G. (2015). Actinotus helianthi populations across a wide geographic range exhibit different climatic envelopes and complex relationships with plant traits. International Journal of Plant Sciences, 176(8), 739-750. [More Information] Lindenmayer, D., Burns, E., Tennant, P., Dickman, C., Green, P., Keith, D., Metcalfe, D., Russell- Smith, J., Wardle, G., Williams, D., et al (2015). Contemplating the future: Acting now on long-term monitoring to answer 2050's questions. Austral Ecology, 40(3), 213-224. [More Information] Wardle, G., Greenville, A., Frank, A., Tischler, M., Emery, N., Dickman, C. (2015). Ecosystem risk assessment of Georgina gidgee woodlands in central Australia. Austral Ecology, 40(4), 444-459. [More Information] Nguyen, V., Greenville, A., Dickman, C., Wardle, G. (2015). On the validity of visual cover estimates for time series analyses: a case study of hummock grasslands. Plant Ecology, 216(7), 975-988. [More Information] Salguero-Gomez, R., Jones, O., Archer, C., Buckley, Y., Che-Castaldo, J., Caswell, H., Hodgson, D., Scheuerlein, A., Conde, D., Brinks, E., Wardle, G., et al (2015). The compadre Plant Matrix Database: An open online repository for plant demography. Journal of Ecology, 103(1), 202-218. [More Information] Greenville, A., Wardle, G., Tamayo, B., Dickman, C. (2014). Bottom-up and top-down processes interact to modify intraguild interactions in resource-pulse environments. Oecologia, 175(4), 1349-1358. [More Information] Andersen, A., Beringer, J., Bull, C., Byrne, M., Cleugh, H., Christensen, R., French, K., Harch, B., Hoffmann, A., Lowe, A., Wardle, G., et al (2014). Foundations for the future: A long-term plan for Australian ecosystem science. Austral Ecology, 39(7), 739-748. [More Information] Frank, A., Wardle, G., Dickman, C., Greenville, A. (2014). Habitat- and rainfall-dependent biodiversity responses to cattle removal in an arid woodland - grassland environment. Ecological Applications, 24(8), 2013-2028. McIntosh, E., Rossetto, M., Weston, P., Wardle, G. (2014). Maintenance of strong morphological differentiation despite ongoing natural hybridization between sympatric species of Lomatia (Proteaceae). Annals of Botany, 113(5), 861-872. [More Information] Renner, M., Brown, E., Wardle, G. (2013). Averaging v. outlier removal. Decrypting variance among cryptic Lejeunea species (Lejeuneaceae: Jungermanniopsida) using geometric morphometrics. Australian Systematic Botany, 26(1), 13-30. [More Information] Tischler, M., Dickman, C., Wardle, G. (2013). Avian functional group responses to rainfall across four vegetation types in the Simpson Desert, central Australia. Austral Ecology, 38(7), 809-819. [More Information] Popic, T., Davila, Y., Wardle, G. (2013). Evaluation of Common Methods for Sampling Invertebrate Pollinator Assemblages: Net Sampling Out-Perform Pan Traps. PloS One, 8(6), 1-9. [More Information]