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Dr Jaclyn Hill

Discipline: Aquatic Ecology, Invasion Biology


Office: Biological Sci, Rm 241

Phone: +27 46 603 7610

Email: j.hill@ru.ac.za


PhD Rhodes University (2008)




Jackie completed her PhD at Rhodes in 2008. She is a trophic ecologist who works primarily on stable isotope dynamics and nutrient loading in aquatic systems. The excessive addition of nitrogen to watersheds has been identified as one of the main causes for the global deterioration of aquatic ecosystems, and once an ecosystem collapses, it is incredibly difficult to rehabilitate. As South Africa has very limited freshwater resources, her current research focus is developing a time integrated water quality monitoring tool to track nitrogen pollution in freshwater systems, which represents ecologically important nitrogen pools and can predict ecosystem deterioration before it actually occurs.

She is also working on investigating the role nutrient loading (nitrogen in particular) plays in invasion ecology and how this relates to the effectiveness and application of biological control.

Research Interests

  • Trophic ecology

  • Invasion biology

  • Anthropogenic pollution

  • Alternative stable states

  • Nitrogen dynamics in aquatic systems


Recent Publications

  • Weaver, K.N., Hill, M.P., Hill, J.M., Coetzee, J.A., Martin, G.D., Paterson, I.D. 2016. Community entomology: insects, science and society. Journal for New Generation Sciences (in press).

  • Muskett, P.C., Hill, J.M., Weyl, P.S.R. 2016. Macroinvertebrate communities associated with duckweed (Lemnaceae) in two rivers of the Eastern Cape, South Africa. African Journal of Aquatic Sciences (in press).

  • Botha, C.E.J., Sacranie, S., Gallagher, S., Hill, J.M. 2016. Russian wheat aphids: Breakfast, lunch, and supper. Feasting on small grains in South Africa. South African Journal of Botany (in press).

  • Plass-Johnson, J., McQuaid, C., Hill, J. 2016. Morphologically similar, coexisting hard corals (Porites lobata and P. solida) display similar trophic isotopic ratios across reefs and depths. Marine and Freshwater Research 67: 671–67.
  • Hill, J.M., Jones, R.W., Hill, M.P. and Weyl, O.L.F. 2015. Comparisons of isotopic niche widths of some invasive and indigenous fauna in a South African river. Freshwater Biology (in press).

  • Johnson, J., McQuaid, C., Hill, and J. 2015. Morphologically similar, coexisting hard corals (Porites lobata and P. solida) display similar trophic isotopic ratios across reefs and depths. Marine and Freshwater Research (in press).

  • Plass-Johnson, J.G., McQuaid, C.D. and Hill, J.M. 2015. The effects of tissue type and body size on δ13C and δ15N values in parrotfish (Scaridae) from Zanzibar, Tanzania. Journal of Applied Ichthyology (in press).

  • Khan, F., Hill, J.M., Kaehler, S., Allsopp, M. and van Vuuren, S. 2014. Antimicrobial properties and isotope investigations of South African honey. Applied Microbiology, 117: 366 – 379.

  • Hill, J.M. 2014. Investigations of growth metrics and δ15N values of water hyacinth (Eichhornia crassipes) in relation to biological control. Aquatic Botany, 114: 12 – 20.

  • Zhu, W., Lu, H., Hill, J., Guo, X., Wang, H. and Wu, W 2013. 13C pulse-labelling comparative assessment of the active methanogenic archaeal community composition in the transgenic and non-transgenic parental rice rhizospheres. FEMS Microbiology Ecology, 87: 746 – 756.

  • Plass-Johnson, J.G., McQuaid, C.D. and Hill, J.M. 2013. Stable isotope analysis indicates a lack of inter- and intraspecific dietary redundancy among ecologically important coral reef fishes. Coral Reefs, 32: 429 – 440.

  • Hill, J.M., Hill, M.P. and Kaehler, S. 2012. Baseline isotope data for Spirodela sp.: nutrient differentiation in aquatic systems. Water Research, 46: 3353 – 3562.

  • Sheppard, J.N., Whitfield, A.K., Cowley, P.D. and Hill, J.M. 2012. Effects of altered submerged macrophyte bed cover on the omnivorous Cape stumpnose Rhabdosargus holubi in a South African estuary. Journal of Fish Biology, 80: 705 – 712.

  • Kohler, S.A., Connan, M., Hill, J.M., Mablouké, C., Ludynia, K., Kepmer, J., Huisamen, J., Underhill, L.G., Cherel, Y., McQuaid, C.D. and Jaquemet, S. 2011. Geographical variations in the trophic ecology of a rocky shore predator, the African Black Oystercatcher, along the southern African coastline. Marine Ecology Progress Series, 435: 235 – 249.

  • Porri, F., Hill, J.M. and McQuaid, C.D. 2011. Associations in ephemeral systems: do close links between sand hoppers and beach wrack reflect trophic relationships? Marine Ecology Progress Series, 426: 253 – 262.

  • Hill, J.M. and McQuaid, C.D. 2011. Stable isotope methods: effect of gut content on isotopic ratios of zooplankton. Estuarine Coastal and Shelf Science, 92: 480 – 485.

  • Hill, J.M. and McQuaid, C.D. 2009. Effects of food quality on tissue specific isotope ratios in the mussel Perna perna. Hydrobiologia, 635: 81 – 94.

  • Hill, J.M. and McQuaid, C.D. 2009. Variability in the fractionation of stable isotopes during degradation of two intertidal red algae.  Estuarine, Coastal and Shelf Science, 82: 397 – 405.

  • Hill, J.M. and McQuaid, C.D. 2008. δ13C and δ15N biogeographic trends in rocky intertidal communities along the coast of South Africa: evidence of strong environmental signatures.  Estuarine, Coastal and Shelf Science, 80: 261 – 268.

  • Hill, J.M., McQuaid, C.D. and Kaehler, S. 2008. Temporal isotopic variation in suspended particulate matter suggests strong links to nearshore hydrography and heavy dependence of mussels on very nearshore production. Marine Biology, 154(5): 899 – 909.

  • Hill, J.M., McQuaid, C.D. and Kaehler, S. 2006. Biogeographic and nearshore/offshore trends in isotope ratios of intertidal mussels and their food sources around the coast of southern Africa. Marine Ecology Progress Series, 318: 63 – 73.

Last Modified :Thu, 06 Oct 2016 15:07:47 SAST