Hydrology is no information on the There is insufficient data to propose a The relative of surface water, local Low hydrology of the site, other than quantitative limit of acceptable change for the groundwater and (if applicable) regional the range in surface area of water hydrology of the site. groundwater is potentially of major observed during site visits. This was importance to the functioning of the site, as is not quantified. the establishment of its hydrological variability. Supporting The baseline information for the There is insufficient data to propose a limit of The presence of a diverse and abundant Low biodiversity site as a support for regional acceptable change for the support of the range macroinvertebrate fauna, two frog species, at biodiversity consists of a restricted of biodiversity at the site. However, since the least one fish species and several rare wetland plant species list and field rare plant species of the site are the major plant species suggests that this site supports observations for this project indicators of the site’s biodiversity, the LAC for biodiversity. However, without quantitative biodiversity is the same as the LAC for the rare assessment, no limits of acceptable change plant species. san be derived Water Quality The minimal data available There is insufficient data to set a limit of The lagoon’s waters are acidic, tannin stained Low Jocks Lagoon is consistently acidic, acceptable change for nutrients and and have a low nutrient status classifies it with a pH of 4.6 to 5.6 (Croome and pH should have a 90th percentile of as dystrophic. These characteristics are Tyler 1987; Bowling et al 1993; 6.5 over one year of sampling. important to the site’s ecological character by Walsh et al 2002; Blackhall et al. influencing the species composition of algae, 2003), although Horwitz (1992) other flora, and fauna as well as many of the recorded it with pH of 6.3. Very ecological processes. The LAC for pH is based limited nutrient and colour data on less than 10 samples and therefore is likely show low nutrients and generally to benefit substantially from further sampling. highly coloured water. *Exceeding or not meeting a LAC does not automatically indicate that has been a change in ecological character.
Hydrology is no information on the hydrology of the site, other than the range in surface area of water observed during site visits. This was not quantified. There is insufficient data to propose a quantitative limit of acceptable change for the hydrology of the site. The relative of surface water, local groundwater and (if applicable) regional groundwater is potentially of major importance to the functioning of the site, as is the establishment of its hydrological variability. Low Supporting biodiversity The baseline information for the site as a support for regional biodiversity consists of a restricted plant species list and field observations for this project There is insufficient data to propose a limit of acceptable change for the support of the range of biodiversity at the site. However, since the rare plant species of the site are the major indicators of the site’s biodiversity, the LAC for biodiversity is the same as the LAC for the rare plant species. The presence of a diverse and abundant macroinvertebrate fauna, two frog species, at least one fish species and several rare wetland plant species suggests that this site supports biodiversity. However, without quantitative assessment, no limits of acceptable change san be derived Low Water Quality The minimal data available Jocks Lagoon is consistently acidic, with a pH of 4.6 to 5.6 (Croome and Tyler 1987; Bowling et al 1993; Walsh et al 2002; Blackhall et al. 2003), although Horwitz (1992) recorded it with pH of 6.3. Very limited nutrient and colour data show low nutrients and generally highly coloured water. There is insufficient data to set a limit of acceptable change for nutrients and pH should have a 90th percentile of 6.5 over one year of sampling. The lagoon’s waters are acidic, tannin stained and have a low nutrient status classifies it as dystrophic. These characteristics are important to the site’s ecological character by influencing the species composition of algae, other flora, and fauna as well as many of the ecological processes. The LAC for pH is based on less than 10 samples and therefore is likely to benefit substantially from further sampling. Low *Exceeding or not meeting a LAC does not automatically indicate that has been a change in ecological character.