NURTURING THE EDGE, NATURALLY

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nz@the edge.rmla Session 7 - concurrent session 1 Wet environment: Coastal & Marine Issues NURTURING THE EDGE, NATURALLY Di Lucas, landscape planner, Lucas Associates, Christchurch Aotearoa New Zealand is a land more edge than interior. With some 11,000 km of coastline it is surprisingly a third the length of Australia’s. An island country, our coasts are where most of us live, where much of our identity is anchored, and whose proximity is ceaselessly sought for living, for recreation and for commerce. “As island dwellers we are extremely fortunate: we share borders with no other country; the edge of the sea is our only boundary. Its problems are of our own creation, and in solving them we have a responsibility to the whole planet.” (Wade Doak, 1983) Sea level used to be 130 metres lower some 18,000 years ago at the time of the last glaciation. The coastline was where the outer continental shelf is. We were a continent (except for White Island in the Bay of Plenty, and perhaps the Chathams). There was no Hauraki Gulf or Cook Strait. Then sea level rose by 10 mm per year, stabilising some 6,500 years ago at current sea level. This left an intricate coastline separating us into islands, drowning valleys to create bays, harbours, inlets and sounds. Thus this land has a reduced area but an increased coastline. Natural coastal processes have since smoothed, trimmed, filled and softened the coastline. Of our open coastline we how have 56% static, 25% is eroding and 19% is accreting (Gibb, 1983). Management must obviously allow for this fundamental dynamism, as well as with sea level rise. Our coasts, their landforms and beaches, are representative of those of the world (Gibb). They are a microcosm of world diversity. A full suite of types is displayed. Assessment, management and protection need to recognise this diversity and its significance. Patti Smith - fronting a Bob Dylan concert tour in New Zealand a few years ago - used her moment of rapt audience attention to plea for people here to value their coasts. She was in awe, considering such undeveloped and wild coastlines to now be a precious and increasingly scarce resource in the world. She pleaded for us to take care to protect their wildness. This protection need not be a vision of uneconomic lock-up, but a creative vision of nurturing, restoring and displaying our nature to the world. Through our parliamentary process, we, as a nation, have decided that preservation of the natural character of the coastal environment is of national importance. Yes, as a land focussed at the edge, edge management is a major resource management task. NATURAL CHARACTER Natural character, natural features and natural landscapes are addressed in Part II of the Resource Management Act 1991and are all important in addressing the coast. “Natural” NURTURING THE EDGE, NATURALLY, Di Lucas

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NURTURING THE EDGE, NATURALLY by Lucas Associates Ltd - Issuu