Biodiversity strategies
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Container gardens
Definition Container gardens are portable planted systems using pots or planters to support vegetation where in-ground planting is not possible. What this strategy does Introduces small-scale planting on rooftops, balconies, courtyards, and hardscaped sites to extend green infrastructure into highly urbanised areas. Container gardens do not replace in-ground habitat or larger-scale ecological restoration. Context In…
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Constructed wetlands
Definition Constructed wetlands are deliberately designed wetland systems that use vegetation, soils, and microbial processes to manage stormwater and improve water quality within urban environments. What this strategy does Treats and attenuates urban runoff while creating semi-natural aquatic habitat. Avoids reliance on fully engineered, energy-intensive water treatment systems. Context In urban Aotearoa New Zealand, constructed…
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Buffers
Definition Buffers are vegetated or natural zones that reduce ecological impacts from adjacent urban land uses by creating a gradual transition between developed areas and sensitive ecosystems. What this strategy does Buffers filter pollutants, stabilise soils, reduce disturbance, and provide habitat and movement space between urban uses and ecological systems. Context In urban and peri-urban…
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Bioswales
Definition Bioswales are linear, vegetated stormwater channels that slow, filter, and infiltrate runoff using engineered soils and planting. What this strategy does Manages surface runoff while providing modest habitat and water-quality benefits; not intended to replace natural streams or wetlands. Context In Aotearoa New Zealand urban environments, bioswales are a core component of water-sensitive design,…
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Bioshading
Definition Bioshading is the intentional use of vegetation to provide shade while supporting ecological function in urban and peri-urban environments. What this strategy does Uses trees, climbers, and planted structures to reduce heat exposure and create habitat. Avoids purely ornamental planting that provides shade without ecological value. Context In Aotearoa New Zealand cities, increasing urban…
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Biofilters
Definition Biofilters are engineered planted systems that treat stormwater runoff by filtering water through layered substrates and vegetation. What this strategy does Treats stormwater close to the source using soil, plants, and microbial processes; reduces pollutant loads entering streams while integrating vegetation into the urban fabric. Context In Aotearoa New Zealand, urban runoff is a…
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Backyard gardens
Definition Backyard gardens are privately managed residential green spaces that, when intentionally designed and maintained, can provide habitat, food resources, and ecological connectivity within urban environments. What this strategy does This strategy leverages cumulative, small-scale planting, habitat features, and low-intensity management across private properties to support urban biodiversity. It avoids reliance on single-species plantings or…
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Animal movement infrastructure
Definition Animal movement infrastructure comprises purpose-built structures that enable wildlife, including fish, to move safely through human-modified landscapes, including roads, railways, waterways, and urban development. What this strategy does This strategy reduces habitat fragmentation by providing crossings, passages, and corridors that support safe movement and dispersal of wildlife. It avoids ad-hoc or poorly sited structures…
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