Fremantle Port Inner Harbour and Channel ... - Fremantle Ports

Table 3.4PERMANOVA table of results for P.angustifolia percentage coverSource df SS MS Pseudo-F P valueZone 2 43.4 21.7 105.07 0.001Site(Zone) 12 13.425 1.1187 5.4165 0.001Transect(Site(Zone)) 63 13.015 0.20658 1.8055 0.001Total 774 150.5Table 3.5Pairwise post hoc tests for P.angustifolia percentage coverGroups t P valueDisturbed, Undisturbed 14.221 0.001Disturbed, Transition 4.3959 0.001Undisturbed, Transition 11.017 0.0013.3 Sediment parameters3.3.1 Sediment field logA sediment field log was used to document:site number;GPS location;photographs taken of cores;sediment samples collected and for which laboratories; andsample characteristics (texture, colour, shell content and presence of anoxic smell).The sediment log is included in Appendix G.3.3.2 Sediment physio-chemical propertiesParticle size distributionParticle size distributions at monitoring sites are illustrated in (Figure 3.6). Particle sizedistributions were generally similar amongst all sites, being dominated (30-64%) by finesands (250-106 μm). Sites SH50, SH51 and 12D also had a large fraction (34, 45 and 34%respectively) of medium sand (500-250 μm). Complete laboratory results from MicroanalysisAustralia are located in Appendix H. No differences in PSD which would affect seagrasshealth (e.g. particularly high clay or gravel content) occurred between sites or zones(undisturbed, transitional and disturbed).Oceanica: Fremantle Ports: FP – Gage Roads Offshore Disposal Area Seagrass Recovery Project, Phase I – Initial Survey 25