Abstract
A review of cattle grazing effects on lake margin vegetation with observations from dune lakes in Northland, New Zealand: C. C. Tanner, New Zealand Natural Sciences, 19, 1992, pp 1–14
Highlights
Farmed livestock have access to the shores of many New Zealand lakes
There have been few studies which document the effects of grazing on the marginal vegetation of lakes in New Zealand
The present paper initially reviews the effects of natural and cattle grazing of lake margin vegetation, presents observations on the effects of cattle grazing on dune lakes in the far north of New Zealand
Summary
Farmed livestock have access to the shores of many New Zealand lakes. Increasingly, exclusion of stock from lakeshores and associated wetlands is being promoted as a desirable management action Modification ofthe surrounding catchment to a grazed pastoral landscape may cause many indirect effects, increased runoff of water, sediments and nutrients due to factors such as removal of protective forest and scrub cover and the application of fertilisers and pesticides (McColl & Hughes 1981). Together these effects are likely to cause changes in the abundance, productivity, structure, diversity and successional and nutrient cycling processes of lake margin plant communities, affecting: 1.
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