State of the Bay Report 2011-Final.pdf - Anchor Environmental

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250 State of Saldanha Bay & Langebaan Lagoon 2011 Intertidal invertebrates Abundance (no/0.5m 2 ) 0 20 40 60 80 100 120 140 Dive School Jetty Schaapen East Schaapen West Iron Ore Jetty Lynch Point North Bay Marcus Island HIGH SHORE Scutellastra granularis Siphonaria serrata Afrolittorina knysnaensis Oxystele variegata Dive School Jetty Schaapen East Schaapen West Iron Ore Jetty Lynch Point North Bay Marcus Island 0 10 20 30 40 50 MID SHORE Scutellastra granularis Cymbula granatina Siphonaria serrata Fissurella mutabilis Afrolittorina knysnaensis Oxystele variegata Oxystele tigrina Burnupena spp. 0 10 20 30 40 50 Dive School Jetty Schaapen East Schaapen … Iron Ore Jetty Lynch Point North Bay Marcus Island LOW SHORE Scutellastra granularis Scutellastra cochlear Cymbula granatina Siphonaria serrata Fissurella mutabilis Oxystele variegata Oxystele tigrina Figure 8.9. Mean abundance (number/0.5 m 2 ) of the most common mobile species at the eight rocky shores in 2011. Sites are sorted from top to bottom according to increasing wave exposure. 176 ANCHOR e n v i r o n m en t a l
Afrolittorina knysnaensis (no/0.5 m 2 ) State of Saldanha Bay & Langebaan Lagoon 2011 Intertidal invertebrates Figure 8.10. The periwinkle Afrolittorina knysnaensis nestling in amongst the alien barnacle Balanus glandula at the mid shore at Iron Ore Terminal. 600 All Shore Heights Mid Shore 500 400 300 y = 2.4282x + 12.639 R² = 0.3431 n = 144 p
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Saldanha Bay and Langebaan Lagoon:
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State of Saldanha Bay & Langebaan L
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Jul-05 Sep-05 Nov-05 Jan-06 Mar-06
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Average Daily Flow (m3/day) Apr-03
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Average daily flow (m 3 /day) Faeca
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Ammonia Nitrogen (mg/l as N) Nitrat
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Volume of Effluent (kL) Jan-01 Mar-
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Mussels Oysters Abalone Scallops Re
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Cadmium (mg/kg) Lead(mg/kg) Mercury
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Beach Width (m) State of Saldanha B
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Copper (mg/kg) Copper (mg/kg) Coppe
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Page 159 and 160: No. saltmarsh patches Saltmarsh are
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Page 211 and 212: Similarity Iron Ore Jetty Iron Ore
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Page 217 and 218: Dive School Jetty Schaapen East Sch
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Page 229 and 230: Number of species State of Saldanha
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Number of breeding pairs State of S
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Number of birds 1976 1977 1978 1979
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No. sites Abundance (no. ind. m -2
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