Lab Report On Algal Biomass

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Algal biomass Chlorophyll a averaged 0.71µg/cm2 across all sites and sample periods and ranged from 0.03 to 3.42µg/cm2. Before the disturbance, Chl a at the SFD sites was lower at Dry Hollow (mean ±1SE; 0.21 ± 0.08 µg/cm2) than at Sis Hollow (1.11 ± 0.37 µg/cm2). Chl a values were similar between the IFD sites [Point Remove and High Cedar (0.51 ± 0.26 µg/cm2 and 0.69 ± 0.37 respectively)]. They were higher at the LFD site, Powerline, than at Low Cedar (1.84 ± 0.55 and 1.04 ± 0.33 µg/cm2 respectively). There were no differences between control and impacted sites prior to the disturbance (Table 4). There were no statistically significant 2-way rmANOVA interaction terms between the BA and CI factors for any of the flow duration parings…show more content…
Examination of the interaction between the BA and CI factors found no differences between the control site and each of the impacted sites for either NO3- or SRP (Table 5; Figures 7 and 8, respectively). Fine organic and inorganic sediments There was a trend of higher fine organic sediments at impacted sites than at the control site, after 3 post-disturbance sampling events, with the control having the lowest (17.87 ± 3.96g/m2), and site 3 having the highest (33.10 ± 10.05g/m2). These differences could not be statistically tested due to issues with sample processing, which resulted in a loss all fine organic sediment data during the first two sample periods. As with the fine organic sediments, fine inorganic sediments tended to be lower at the control site than impacted sites and ranged from 275.63 ± 66.08g/m2 at the control site to 482.97 ± 111.32g/m2 at site 2. Again, these differences between the control site and impacted sites were not statistically significant (P> 0.05 for all pairings). Fine inorganic sediments did not differ between the control site and the impacted sites prior to disturbance (Table 5). Additionally, there were no significant interactions between the BA and CI factors for any of the pairings between the control site and impacted sites (Table 5; Figure 9). Algal biomass Chlorophyll a measured across all sample periods was

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