Aquatic Ecology and SUDS Ponds Standing Conference 26th meeting Dunfermline Topics Reasons for encouragement of the ecology of SUDS Enhancement of habitat and biodiversity in SUDS Ecology at DEX Policy Context National.
Download ReportTranscript Aquatic Ecology and SUDS Ponds Standing Conference 26th meeting Dunfermline Topics Reasons for encouragement of the ecology of SUDS Enhancement of habitat and biodiversity in SUDS Ecology at DEX Policy Context National.
Aquatic Ecology and SUDS Ponds Standing Conference 26th meeting Dunfermline Topics Reasons for encouragement of the ecology of SUDS Enhancement of habitat and biodiversity in SUDS Ecology at DEX Policy Context National Planning Policy Guidelines – NPPG 14 Natural Heritage Planning Advice Notes – PAN 60 Planning for Natural Heritage – PAN 61 Planning and SUDS Factors of importance for ecology in SUDS 1. Physical design 2. Use of suitable plant species 3. Maintenance considerations Habitat variety Linked complexes: ponds, running waters, wetlands submerged/floating emergent reedbeds marsh carr Habitat design Ponds floating rafts and islands variety of depths maximum depth 3m spits gently sloping/shelving sides Habitat design Wetlands ensure base flow ensure storage capacity variety of depths inclusion of pools Colonisation of SUDS Self-colonisation best Planting-up – safety – water treatment – protection of basin – landscape value Sources of plants for SUDS avoid taking from the wild river/canal management programmes SUDS specialist supplier of native species Suitability of plants for SUDS geology, sediment, water type pollutant loading water/sediment pollutant concentration water level changes Introduced versus native plants Native plants form habitat associations with other natives. Native plants support native fauna. Aliens may exhibit inferior growth rates. Aliens may breed with native species. Aliens may spread to semi-natural waters. Alien plants Azolla filiculoides Crassula helmsii Egeria densa Elodea canadensis, E. nuttallii Hydrocotyle ranunculoides Lagarosiphon major Myriophyllum aquaticum Native plants Phragmites australis, Glyceria maxima,Typha latifolia, Iris pseudacorus Lythrum salicaria, Veronica beccabunga, Myosotis scorpioides Native plants Sparganium erectum, Caltha palustris, Eleocharis palustris, Persicaria amphibia, Menyanthes trifoliata Nuphar lutea, Nymphaea alba, Potamogeton natans, P.pusillus, P.crispus, Zannichellia palustris Maintenance undertake staged development stagger management procedures provide wildlife corridors provide pre pond/wetland basin Ecology at DEX Pond Action (2000) – Linburn Pond NT119874 – Halbeath Pond NT128883 – Calais Wood Marsh NT125868 – Pond 5 NT127862 – 2 retention basins NT130878, NT125863 Diversity Retention ponds – 3 to 6 species of macrophyte Calais Wood Marsh Pond – 40 species of invertebrate – 25 species of macrophyte Naturalness Native species outwith range – Sagittaria sagittifolia – Ludwigia palustris Cultivars Alien species – Crassula helmsii – Elodea nuttallii – Lagarosiphon major Rarity No nationally scarce or Red List species Calais Wood Marsh, Halbeath Pond, Pond 5 – >3 locally uncommon species Studies of SUDS ponds elsewhere Water voles (Motorola, Bathgate) Frogs and newts (Freeport, West Calder) Newt larvae (Houston Caw Burn) Uncommon cased-caddis fly (West Calder) Limosella aquatica (Clyde Valley) Summary statement Despite the artificial nature of SUDS ponds, through consideration of design, location, sourcing of plants and maintenance procedures, well in advance of the development, ecological potential can be maximised.