established at 25m to minimise disturbance. If deemed appropriate by the ornithologist, in consultation with the ECoW, boarding would be erected adjacent to works in order to further reduce disturbance impacts. The suitably qualified ornithologist would advise on fledging times in order to define when mitigation measures can cease.


55.


In the event that a 25 m exclusion zone cannot be established due to the location of existing construction activities then consultation will take place with Natural England and additional measures will be explored. In the event that additional measures cannot be developed the final backstop is that specific activities will cease in order that the criminal offence is not committed of disturbing a Schedule 1 breeding species.


1.8 Mitigation Post Construction


56. On completion of construction, the land would be reinstated, farmland returned to agricultural practice and other areas would be reinstated in accordance with provisions in the Outline Landscape and Ecological Management Plan.


57. In areas where HDD is used the habitat for nesting birds will not have been affected and there will be no interruption to the availability of suitable nesting habitat.


58.


In areas where reed had been temporarily cleared, as this will have been done by cutting the above ground part of the plant, the underground and surface rhizomes will have been left untouched and will re-grow the following spring. This regrowth in its first year after cutting will be sufficient to create nesting habitat for a number of species of wetland bird. For birds such as Reed Warbler that require second year or older reed stems to support their early season nesting attempts then the regrowth will not be sufficient until the second year of regrowth. In the third and subsequent years the reedbed habitat will for the purposes of nesting birds be indistinguishable from the uncut habitat.


59.


In areas where scrub had been temporarily cleared, as this will have been done by cutting the above ground part of the plant, the rootstock will have been left untouched and will re-grow the following spring in the form of a coppiced bush. This regrowth in its first year after cutting will be sufficient to create nesting habitat for a number of species of bird. For birds that nest in taller scrub such as Bullfinch some three to five years of regrowth by plants such as Hawthorn will be required before it becomes suitable. In the subsequent years the scrub habitat will for the purposes of nesting birds be indistinguishable from the uncut habitat.


60.


In areas where trenching has been carried out the rootstock will have been removed and reinstatement and growth of vegetation to the condition that it is suitable for nesting birds will take longer. For reedbeds and reed fringed ditch margins colonisation from adjacent retained reed rhizomes will be in the order of the rate of one metre per year and similarly the spread of replanted rhizomes will be in the order of one metre per year. With an appropriate density of transplanted reed rhizomes a ditch margin can be reinstated within


EcMP: Deben Estuary SPA & Schedule 1 Birds


Page 12


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