I work at all levels in freshwater ecosystems, ranging from population and community ecology through to ecosystem and aquatic landscape ecology, including work on fish and invertebrates in streams, lakes and wetlands. I’ve been particularly interested in aquatic food webs, predator-prey interactions, the influences of flow-related habitat size and disturbance in rivers, exchanges between aquatic and terrestrial ecosystems, and restoration and rehabilitation. This has included long-running studies in the upper Waimakariri River system in Canterbury, at the Rocky Mountain Biological Laboratory in Colorado and in agricultural streams of the Canterbury Plains. Important aspects include investigations of:
- effects of non-native trout on galaxiid fishes,
- riverscape configuration influences on fish and other aquatic biodiversity,
- changes in river habitat size (e.g. through alteration in flows) on river food webs,
- habitat drying on pond communities,
- connections between aquatic and terrestrial ecosystems (cross-ecosystem influences)
-restoration of agricultural streams in the Canterbury Waterway Rehabilitation Experiment (CAREX).
See the FERG (Freshwater Ecology Research Group) pages for more details on this research and my EcologyLive website (see link under Resources above) for photographs, stories and information of interest to a wider audience.
- Boddy NC. and McIntosh AR. (2021) Could spatial heterogeneity in flow disturbance drive temporal stability of native–invasive species co-occurrence in riverscapes? Freshwater Biology http://dx.doi.org/10.1111/fwb.13685.
- Macinnis-Ng C., Mcintosh AR., Monks JM., Waipara N., White RSA., Boudjelas S., Clark CD., Clearwater MJ., Curran TJ. and Dickinson KJM. (2021) Climate-change impacts exacerbate conservation threats in island systems: New Zealand as a case study. Frontiers in Ecology and the Environment http://dx.doi.org/10.1002/fee.2285.
- Meijer CG., Warburton HJ. and McIntosh AR. (2021) Disentangling the multiple effects of stream drying and riparian canopy cover on the trophic ecology of a highly threatened fish. Freshwater Biology 66(1): 102-113. http://dx.doi.org/10.1111/fwb.13620.
- Atkinson CL., Parr TB., van Ee BC., Knapp DD., Winebarger M., Madoni KJ. and Haag WR. (2020) Length-mass equations for freshwater unionid mussel assemblages: Implications for estimating ecosystem function. Freshwater Science 39(3): 377-390. http://dx.doi.org/10.1086/708950.
- Boddy NC., Booker DJ. and McIntosh AR. (2020) Heterogeneity in flow disturbance around river confluences influences spatial patterns in native and non-native species co-occurrence. Biological Invasions 22(11): 3457-3475. http://dx.doi.org/10.1007/s10530-020-02334-1.