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HotScience last updated: 19 February 2003
M...
McAlpine, K. G.; Drake, D. R. 2003. The effects of small-scale environmental heterogeneity on seed germination in experimental treefall gaps in New Zealand. Plant Ecology 165: 207–215.
Seed germination of native and exotic woody species was studied in treefall gaps to assess how environmental heterogeneity affects regeneration from seed. Gaps were created in a relictual pine plantation destined for restoration to native forest. Seeds of Alectryon excelsus,Macropiper excelsum, Fuchsia excorticata, Cytisus scoparius and Berberis darwinii were sown in sites differing in exposure, with and without 3 cm of pine litter. Effects of litter and degree of exposure on germination varied with species. Results suggest that microenvironmental heterogeneity can be an important influence on the species composition of regenerating vegetation within and around treefall gaps.
McGlone, M.S.; Duncan, R.P.; Heenan, P.B. 2001. Endemism, species selection and the origin and distribution of the vascular plant flora of New Zealand. Journal of Biogeography 28: 199-216.
This paper evaluates competing views on the origin and distribution of New Zealand's vascular plant flora, concluding that ecological traits such as species dispersal capabilities and habitat requirements have played a key role in the formation of the flora and in shaping the geographic patterns of disjunction and endemism within New Zealand.
Miller, C. 2002. Conservation of riparian forest remnants, West Coast, New Zealand. Landscape Research 27: 125-140.
This paper presents data on the spatial extent and distribution of intact and fragmented riparian forest on the South island’s West Coast. The implications of ecological processes and land-management practises are discussed, and three conservation priorities are identified.
Miller, C.; Elliot, M.; Alterio, N. 2001. Home range of stoats (Mustela erminea) in podocarp forest, south Westland, New Zealand: implications for a control strategy. Wildlife Research 28: 165-172.
Predation by stoats threatens the survival of Okarito brown kiwi (Apteryx australis). Home range data from stoats at Okarito forest are presented, and the implications of these for the development of a stoat control strategy are discussed.
Miller, C.J. 2000. Vegetation and habitat are not synonyms. A perspective on New Zealand’s Resource Management Act. Ecological Management and Restoration 1: 103-105.
The Resource Management Act requires the protection of significant indigenous vegetation and significant habitats of indigenous fauna. This paper argues that assessment of these conditions requires two different approaches if the purpose of the RMA is to be met.
Moles, A. T.; Hodson, D. W.; Webb, C. J. 2000. Do seed size and shape predict persistence in soil in New Zealand? Oikos 89: 541-545.
European species with small, rounded seeds have persistent seed banks, but species with larger, elongate or flattened seeds usually lack persistence. This may be because small, rounded seeds are easily incorporated into the soil, and therefore have less exposure to seed predators. We tested whether seed size and shape could predict persistence in soil in 47 species native to New Zealand forests. Species with persistent seeds had significantly smaller seeds than transient-seeded species. However, some species did have large and/or elongate persistent seeds. Perhaps these species can persist because of the low levels of seed predation observed in New Zealand.
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