Alexandra Campbell

Adjunct Lecturer

My research focuses on interactions between habitat-forming organisms in marine ecosystems and the things that eat, grow on or infect them. I’m particularly interested in how changing environmental conditions alter these interactions and what ecological and biological consequences such alterations have at individual, community and ecosystem scales. A recent focus of my research has been climate-mediated diseases, which are increasing with frequency and severity in diverse habitats globally.

Although I’m broadly interested in marine habitat formers (including corals and seagrasses), most of my research to date has involved seaweeds. These marine macrophytes form underwater forests and are the basis of coastal, temperate marine ecosystems, supporting other organisms from the ‘bottom-up’ by providing food and shelter. Seaweeds are showing evidence of global decline and this could have potential far-reaching ecological and socio-economic implications.A broad aim of my work is to address this problem by trying to understand the mechanisms behind declines and the roles of environmental change, seaweed chemical defences and microorganisms. An underlying hypothesis directing much of my research is that environmentally mediated diseases (rather than environmental changes directly) may be a cause of declines of seaweeds and other habitat-forming organisms around the globe. My aim is to understand processes that may help predict, prevent or ameliorate losses of these important organisms from ecologically valuable ecosystems.

For more information about my research and current projects, see http://www.bees.unsw.edu.au/staff/alexandra-campbell

Publications

Journal articles
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Koch H; Germscheid N; Freese HM; Noriega-Ortega B; Lücking D; Berger M; Qiu G; Marzinelli EM; Campbell AH; Steinberg PD; Overmann J; Dittmar T; Simon M; Wietz M, 2020, 'Genomic, metabolic and phenotypic variability shapes ecological differentiation and intraspecies interactions of Alteromonas macleodii', Scientific Reports, vol. 10, http://dx.doi.org/10.1038/s41598-020-57526-5
2020
Getman-Pickering ZL; Campbell A; Aflitto N; Grele A; Davis JK; Ugine TA, 2020, 'LeafByte: A mobile application that measures leaf area and herbivory quickly and accurately', Methods in Ecology and Evolution, vol. 11, pp. 215 - 221, http://dx.doi.org/10.1111/2041-210X.13340
2020
Longford SR; Campbell AH; Nielsen S; Case RJ; Kjelleberg S; Steinberg PD, 2019, 'Interactions within the microbiome alter microbial interactions with host chemical defences and affect disease in a marine holobiont', Scientific Reports, vol. 9, pp. 1363, http://dx.doi.org/10.1038/s41598-018-37062-z
2019
McGeoch MA; Latombe G; Andrew NR; Nakagawa S; Nipperess DA; Roigé M; Marzinelli EM; Campbell AH; Vergés A; Thomas T; Steinberg PD; Selwood KE; Henriksen MV; Hui C, 2019, 'Measuring continuous compositional change using decline and decay in zeta diversity', Ecology, vol. 100, http://dx.doi.org/10.1002/ecy.2832
2019
Trevathan-Tackett SM; Sherman CDH; Huggett MJ; Campbell AH; Laverock B; Hurtado-McCormick V; Seymour JR; Firl A; Messer LF; Ainsworth TD; Negandhi KL; Daffonchio D; Egan S; Engelen AH; Fusi M; Thomas T; Vann L; Hernandez-Agreda A; Gan HM; Marzinelli EM; Steinberg PD; Hardtke L; Macreadie PI, 2019, 'A horizon scan of priorities for coastal marine microbiome research', Nature Ecology and Evolution, vol. 3, pp. 1509 - 1520, http://dx.doi.org/10.1038/s41559-019-0999-7
2019
Qiu Z; Coleman MA; Provost E; Campbell AH; Kelaher BP; Dalton SJ; Thomas T; Steinberg PD; Marzinelli EM, 2019, 'Future climate change is predicted to affect the microbiome and condition of habitat-forming kelp', Proceedings of the Royal Society B: Biological Sciences, vol. 286, http://dx.doi.org/10.1098/rspb.2018.1887
2019
Marzinelli EM; Leong MR; Campbell AH; Steinberg PD; Vergés A, 2016, 'Does restoration of a habitat-forming seaweed restore associated faunal diversity?', Restoration Ecology, vol. 24, pp. 81 - 90, http://dx.doi.org/10.1111/rec.12292
2016
Campbell AH; Marzinelli EM; Gelber J; Steinberg PD, 2015, 'Spatial variability of microbial assemblages associated with a dominant habitat-forming seaweed', Frontiers in Microbiology, vol. 6, http://dx.doi.org/10.3389/fmicb.2015.00230
2015
Bennett S; Wernberg T; Joy BA; De Bettignies T; Campbell AH, 2015, 'Central and rear-edge populations can be equally vulnerable to warming', Nature Communications, vol. 6, http://dx.doi.org/10.1038/ncomms10280
2015
Wernberg T; Russell BD; Moore PJ; Ling S; Smale DA; Campbell AH; Coleman MA; Steinberg PD; Kendrick GA; Connell SD, 2011, 'Impacts of climate change in a global hotspot for temperate marine biodiversity and ocean warming', Journal of Experimental Marine Biology and Ecology, vol. 400, pp. 7 - 16, http://dx.doi.org/10.1016/j.jembe.2011.02.021
2011
Poore AG; Campbell AH; Steinberg PD, 2009, 'Natural densities of mesograzers fail to limit growth of macroalgae or their epiphytes in a temperate algal bed', Journal of Ecology, vol. 97, pp. 164 - 175, http://dx.doi.org/10.1111/j.1365-2745.2008.01457.x
2009
Reports
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Wernberg T; Campbell AH; Coleman MA; Connell SD; Kendrick GA; Moore PJ; Russell ; Smale DA; Steinberg PD, 2009, Marine climate Change in Australia: Impacts and Adaptations Responses, Report Card 2009, NCCARF, Australia, Report Card of Marine Climate Change for Australia, Report Card 2009, http://www.oceanclimatechange.org.au/
2009