Department of Geography
CUPE lecturer, Department of Geography, York Univeristy
Hewitt, N. and Greene, D. A model of tree colonization in a system of forest fragments. For submission to Canadian Journal of Forest Research in April 2010
Hewitt, N. 2010. Forest Fragmentation. In B. Warf (ed.) Encyclopedia of Geography, Sage Publishers.
Richart, M. and Hewitt, N. (2008) Tree species diversity and size structure in the Backus Woods Forest Preserve and surrounding forest remnants, Southern Ontario. Landscape and Urban Planning 86:25-37.
Hewitt, N. and Kellman, M. (2004) Factors influencing tree colonization in fragmented
forests: An experimental study of introduced seeds and seedlings. Forest Ecology
and Management 191:39-59.
Hewitt, N. and Kellman, M. (2002) Tree seed dispersal among forest fragments. I. Conifer
plantations as seed traps. Journal of Biogeography 29:337-349.
Hewitt, N. and Kellman, M. (2002) Tree seed dispersal among forest fragments. II. Dispersal abilities and biogeographical controls. Journal of Biogeography 29:351-363.
Hewitt, N. (1998) Seed size and shade tolerance: A comparative analysis of North American temperate trees. Oecologia 114: 432 440.
Nina’s research focuses on plant dispersal, metapopulation dynamics and controls on regeneration in fragmented forest systems. The work is field-based in such widely separated places as the Long Point region, Southern Ontario and glacial valleys of the Karakoram Himalayas. Part of this research involves the use of tree-ring data to infer forest and climate history in some of these systems. This includes a recently initiated study of disturbance and fire history in High Park, Southern Ontario using snags and stump samples.
Nina teaches biogeography and environmental science in the Department of Geography at York, and is post-doctoral researcher on the topic of assisted migration, invasive species and climate change as part of a collaborative grant funded by the Canadian Foundation for Climate and Atmospheric Sciences. Nina was on faculty at DePaul University from 1999-2005.