Research

Biodiversity of Antarctic invertebrates

 In conjunction with PhD student Mark Stevens, MPhil student Liam Nolan and MSc student Angela

 McGaughran have been studying the biodiversity of terrestrial invertebrates. Here, Mark is sampling at

 the top of the Marshall Valley in southern Victoria Land. The Adams glacier at the head of Miers Valley

 is visible in the background.

In particular, we have been examining the distribution, population genetics and dispersal of the

springtail Gomphiocephalus hodgsoni (shown above). Surprisingly, this is the largest year-round

terrestrial animal in this part of Antarctica (actual size <2mm).  Penguins and seals are seasonal

animals that are common in some areas.

More recently, we have been studying the nearshore marine fauna such as crustaceans.Collaborators have included Prof. P.D.N. Hebert from the University of Guelph, Canada (upper photo, middle), Dr. Francesco Frati from the University of Siena, Italy (lower photo, right side), and Dr. Conrad Pilditch from the University of Waikato (lower photo, middle)

In 2004, event K028 (Biodiversity of Terrestrial Invertebrates) visited the ranges surrounding Lake Vida (Victoria Valley) and Lake Vanda (Wright Valley).  Shown is our camp on the shoreline of Lake Vida with parts of the Olympus range visible in the background -- team members were (from left to right):  Liam Nolan, Arne Fjellberg (Norway), Angela McGaughran, Ian Hogg.

Recent Publications in Biodiversity of Antarctic invertebrates:

Stevens, M.I., and I.D. Hogg.  2003.  Long-term isolation and recent range expansion revealed for the endemic springtail Gomphiocephalus hodgsoni from southern Victoria Land, Antarctica.  Molecular Ecology 12: 2357-2369.

Hogg, I.D., and Stevens, M.I. 2002. Soil fauna of Antarctic Coastal Landscapes. Chapter 15 in Beyer, L. and Boelter, M. (eds.). Geoecology of Antarctic Ice-free Coastal Landscapes. Ecological Studies Analysis and Synthesis, Vol. 154, Springer-Verlag, Berlin.

Stevens, M.I. and I.D. Hogg. 2002. Expanded distributional records of Collembola and Acari in      southern Victoria Land, Antarctica. Pedobiologia 46: 485-496. 

Genetic diversity & conservation of natural populations

MSc Student Kareen Schnabel and PhD students Darin Sutherland and Mark Stevens have been

examining the diversity and phylogeny of freshwater and estuarine amphipods in New Zealand. Here

Darin is sampling a freshwater spring habitat near Egmont National Park.

Participants from the 3^rd Annual New Zealand Molecular Ecology Conference (co-hosted by the University of Waikato), held at Pirongia Forest Park Lodge, Pirongia.

Recent Publications in genetic diversity & conservation:

Stevens, M.I., and I.D. Hogg. 2004. New Zealand’s corophiid amphipods: allozyme evidence for speciation during the Cenozoic. Biological Journal of the Linnean Society 81: 119-133.

Chapman, M.A., Hogg, I.D., Schnabel, K.E., and Stevens, M.I.  2002.  Proposed synonymy of the New Zealand corophiid genus, Chaetocorophium Karaman, 1979, with Paracorphium Stebbing, 1899:  morphorlogical and genetic evidence.  Journal of the Royal Society of New Zealand 32:  229-241.

Hogg, I.D., and Stevens, M.I. 2002. Soil fauna of Antarctic Coastal Landscapes. Chapter 15 in Beyer, L. and Boelter, M. (eds.). Geoecology of Antarctic Ice-free Coastal Landscapes. Ecological Studies Analysis and Synthesis, Vol. 154, Springer-Verlag, Berlin.

Stevens, M.I., I. D. Hogg and M. A. Chapman. 2002. The corophiid amphipods of Tauranga Harbour, New Zealand: evidence of an Australian crustacean invader. Hydrobiologia 474:  147-154.

Hogg, I.D., P. Willmann-Huerner, and M.I. Stevens. 2002. Population genetic structures of two New Zealand stream insects: Archichauliodes diversus (Megaloptera) and Coloburiscus humeralis (Ephemeroptera). New Zealand Journal of Marine and Freshwater Research 36: 491-501.

Hogg, I.D., J.M. Eadie, D.D. Williams, and D. Turner. 2001. An evaluation of fluctuating asymmetry as an indicator of low-level thermal perturbation in a stream dwelling insect. Journal of Applied Ecology 38: 1326-1339. 

Collier, K., C. Fowles and I. Hogg. 2000. Management, Education and Conservation. Chapter 15 in Collier, K. and M. Winterbourn (eds). Stream Invertebrates of New Zealand: Ecology and Implications for Management. Limnological Society of New Zealand.

Hudson, Q.J., Wilkins, R.J., Waas, J. R. and Hogg, I.D. 2000. Low genetic variability in small populations of New Zealand kokako (Callaeas cinerea wilsoni). Biological Conservation 96: 105-112

Hogg, I.D., Y. de Lafontaine, and J.M. Eadie. 2000. Genotypic variation among Gammarus fasciatus (Crustacea: Amphipoda) from the Great Lakes – St. Lawrence River: implications for the conservation of widespread freshwater invertebrates. Canadian Journal of Fisheries and Aquatic Sciences 57: 1843-1852.

Schnabel. K.E., Hogg, I.D. and Chapman, M.A. 2000. Population genetic structures of two New Zealand corophiid amphipods and the presence of morphologically cryptic species: implications for the conservation of diversity. New Zealand Journal of Marine and Freshwater Research. 34:  637-644.

Freshwater and Estuarine Ecology

Summer Warr (MSc), was looking at temporal variation in macroinvertebrate drift to the Wairoa River Estuary in Tauranga Harbour on the east coast of the North Island. Summer is now working for Wellington Regional Council.

David Burger (MSc), examined the zooplankton in the Waikato River with reference to water quality parameters.  David is now completing his PhD at Waikato.

 Recent publications in freshwater and estuarine ecology:

Stevens, M.I., I. D. Hogg and M. A. Chapman. 2002. The corophiid amphipods of Tauranga Harbour, New Zealand: evidence of an Australian crustacean invader. Hydrobiologia 474:  147-154.

Burger, D.F., I.D. Hogg, and J.D. Green. 2002. Distribution and abundance of zooplankton in the Waikato River, New Zealand. Hydrobiologia 479:  31-38.

Global climate change & environmental stress

Field experiment used to test the effects of increased water temperatures on stream ecosystems.  Site is located in southern Ontario, Canada.

Recent publications in global climate change & environmental stress:

Hogg, I.D., J.M. Eadie, D.D. Williams, and D. Turner. 2001. An evaluation of fluctuating asymmetry as an indicator of low-level thermal perturbation in a stream dwelling insect. Journal of Applied Ecology 38: 1326-1339.

Hogg, I.D., J.M. Eadie, and Y. de Lafontaine. 1998. Atmospheric change and the diversity of aquatic invertebrates: are we missing the boat? Environmental Monitoring and Assessment 49: 291-301.

Hogg, I.D., and D.D. Williams. 1996. Response of stream invertebrates to a global warming thermal regime: an ecosystem-level manipulation. Ecology 77: 395-407.

Hogg, I.D., and D.D. Williams. 1996. Modelling the potential changes in spring communities resulting from global warming. Crunoecia 5: 197-205

Hogg, I.D., D.D. Williams, J.M. Eadie and S.A. Butt. 1995. The consequences of global warming for stream invertebrates: a field simulation. Journal of Thermal Biology 20: 199-206.

Williams, D.D., N.E. Williams, and I.D. Hogg. 1995. Life history plasticity of Nemoura trispinosa (Plecoptera:  Nemouridae) along a permanent - temporary water habitat gradient. Freshwater Biology 34: 155-163.

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