Mr Lydiard: Hello Ian, its John Lydiard. What's the process for clearing land, clearing excess vegetation? If the farmer gets into trouble for clearing excess vegetation do you get into trouble too?
Mr Colley: I guess so.
Mr Lydiard: Do you have to fill out paper work? Do you specify to the farmer what he clears and what permits he needs?
Mr Colley: Basically, we do what the farmer asks us to do.
11 In around August 2008 Mr Smithwell commenced burning the felled vegetation.
Environmental harm
12 One hundred and twenty-eight trees were removed from across the property during the offence period. These trees were not non-protected regrowth within the meaning of the NV Act and compliance with the NV Act was required before they could be cleared. An affidavit of David John Geering, Threatened Species Officer of the Prosecutor, sworn 24 September 2009, identifies the results of his inspection of the property in October 2008. Preliminary identification of every tree species on the property was confirmed by further examination of samples taken of these trees and included Angophora floribunda, Eucalyptus moluccana, Eucalyptus Albans, Eucalyptus melliodora, Eucalyptus blakelyi, Eucalyptus macrorhyncha, and some uncertain hybrid species. He states several bird species listed on Sch 3 [clarified as meaning Sch 2 by counsel] of the Threatened Species Conservation Act 1995 (the TSC Act) were also identified while collecting botanical data, and included various numbers of Grey-crowned Babblers, Speckled Warblers, Hooded Robins and Diamond Firetails.
13 A report of Mr Ian Cole, Senior Natural Resources Officer with the Prosecutor, was provided on the environmental impact of the clearing based on field sheets, photographs and investigative samples taken by compliance officers on field trips to the property in August and October 2008. Based on this information he concludes that about 29 ha of woodland vegetation has been thinned by about 60 per cent. Many large trees were removed as seen in 44 burnt and 5 unburnt stacks of trees. There is a much reduced cover of native overstorey species in the cleared area. Only 35 large trees were retained. There is a high degree of certainty that the important overstorey trees cleared on this site are more than 30 years old and existed on the site before 1990. Some of the species identify the community as a White Box-Yellow Box-Blakely's Red Gum (Box Gum) woodland endangered ecological community (EEC) in this bioregion. These tree species have a high ecological value as they offer potential habitat for a wide range of native animals including several threatened species. Large mature trees are essential for the presence of nesting hollows for native birds and bats. It is likely that 60 per cent of habitat has been removed. The habitat for threatened species is inadequately represented in conservation reserves in the region.
14 Loss of this vegetation also affects the connectivity of the vegetation in the region. Prior to the clearing the property represented one of the less cleared and agriculturally modified areas in the district. Clearing has not reduced the size of the overall remnant and the distance to the next "stepping stone" habitat remains the same. The significant thinning of trees increases the likelihood of future fragmentation of habitat by ensuring stands become old and moribund with no capacity to regenerate. There has been a loss of structural layers and there is a lack of tree species regeneration.
15 There is greater abundance of weeds on disturbed soils and a loss of leaf litter and fallen timber. The clearing has negatively impacted on the condition of the native vegetation remaining on the property. Negative impacts have been caused by the removal of dead trees and large trees of hollow bearing age, younger cohorts of trees essential to ensuring replacement of older trees as they senesce and die, and the removal of coarse woody debris and litter.
16 This ecological community generally has been drastically reduced in area and highly fragmented within all bioregions because of clearing for cropping and pasture improvement. Remnants are subject to varying degrees of threats including clearing. The only mitigating factor is the proximity of the property to large intact remnants where all the woodland habitat is still available for utilisation by fauna.
17 The clearing has not caused any significant soil erosion hazard and there is no evidence of siltation, salinity risk or adverse effects on water quality in adjacent streams or rivers.