2008 Annual Monitoring Report (pdf 10.9MB) - Bolsa Chica ...

More documents

Recommendations

Info

Bolsa Chica Lowlands Restoration Monitoring 2008 Annual Report Recommendations No changes to the fisheries monitoring program are recommended at this time. The next monitoring is scheduled to occur in Year 5, with sampling events in October 2010, and January, April, and July 2011. 1.4. BENTHIC MONITORING Introduction The Monitoring Plan calls for benthic invertebrate monitoring to be initiated in Year 2 (October 2007 to September 2008) and to be repeated in Years 5 and 10 following the opening of the FTB to the ocean. The Year 2 sampling was conducted in January and July of 2008. The objective of the benthic monitoring task in the Monitoring Plan is to characterize the marine invertebrate food resources available to birds and fish, as well as provide an index of general habitat quality in the basin. Methodology Infauna Three benthic sampling stations were established in the FTB: one along the north eastern shore, one along the western shore, and one in the southern portion of the basin (Figure 1-11). Three replicate collection points were established for each station. At each replicate point, a sediment core was collected from the + 0.3-m (+1-foot) NAVD elevation and from the -0.6-m (–2-foot) NAVD elevation. These elevations will be referred to in feet throughout this section. The elevations were estimated based on the water level compared to a known elevation at the east Water Control Structure in January 2008. During the second sampling in July 2008, the tidal range in the basin had been altered due to tidal muting caused by the accumulated flood shoal in the basin inlet, and the point of core collection had to be adjusted accordingly to best approximate the true tidal elevation. The sediment cores were collected using a 15-cm diameter corer inserted to a sediment depth of 15 cm, and rinsed through a 1.0-mm sieve. The sediment area sampled by each core was 0.018 m 2 . Core collection unavoidably captured the biota occurring on the surface of the sampled core, as well as in the water column for the –2-foot NAVD samples. Therefore, the collected samples could include epibenthic and open water organisms along with the infauna. Although captured fish were removed from the samples, all other organisms were retained and worked up along Sieving a sediment core. with the infauna. Organisms from each sample were placed in containers, preserved in a buffered 10% formalin:seawater solution, and transported to the laboratory for subsequent analysis. After approximately one week, organisms collected from the benthic cores were transferred in the laboratory into 70% isopropyl alcohol. All individuals in each replicate sample were identified to the lowest practical taxonomic level, counted, and the wet weight measured. Wet weight was determined by transferring the sample, including alcohol, onto a paper towel and blotting quickly to remove excess liquid from the animals. Organisms were then transferred to a tared weighing dish and weighed to the Merkel & Associates, Inc. 55
Benthic Sta 1 Rep2 Benthic Sta 1 Rep1 Benthic Sta 3 Rep1 Benthic Sta 3 Rep2 Benthic Sta 3 Rep3 Benthic Sta 1 Rep3 Full Tidal Basin Benthic Sta 2 Rep1 Benthic Sta 2 Rep2 Benthic Sta 2 Rep3 0 100 200 400 600 800 Meters Benthic sampling stations Bolsa Chica Lowlands Restoration Project Figure 1-11 Merkel & Associates, Inc.
Page 2 and 3:
Bolsa Chica Lowlands Restoration Pr
Page 4 and 5:
Bolsa Chica Lowlands Restoration Mo
Page 6 and 7:
Page 8 and 9:
Page 10 and 11: Bolsa Chica Lowlands Restoration Mo
Page 20 and 21: Santa Barbara Los Angeles Outer Bol
Page 44 and 45: BS PM Rep3 Muted Pocket Marsh BS PM
Page 58 and 59: Topsmelt January April July October
Page 74 and 75: 22 Temperature 20 Temperature (C) 1
Page 78 and 79: PM 50 66 47 Full Tidal Basin Future
Page 94 and 95: Zone PM 2 9 10 11 12 13 14 19 20 21
Page 108 and 109: Aug06 to Jan07 Jan07 to Jun07 assum
Page 110 and 111:
Page 112 and 113:
Page 114 and 115:
Page 116 and 117:
Page 118 and 119:
Page 120 and 121:
Page 122 and 123:
Page 124 and 125:
Page 126 and 127:
Page 128 and 129:
Page 130 and 131:
Page 132 and 133:
Page 134 and 135:
Page 136 and 137:
Page 138 and 139:
Page 140 and 141:
Page 142 and 143:
Page 144 and 145:
Page 146 and 147:
Page 148 and 149:
Page 150 and 151:
Page 152 and 153:
Page 154 and 155:
Page 156 and 157:
Page 158 and 159:
Page 160 and 161:
Page 162 and 163:
Page 164 and 165:
Page 166 and 167:
Page 168 and 169:
Total Future Full Tidal Basin FFTB
Page 170 and 171:
Page 172 and 173:
Western Snowy Plover Nesting at Bol
Page 174 and 175:
Page 176 and 177:
Page 178 and 179:
Page 180 and 181:
Page 182 and 183:
Page 184 and 185:
Page 186 and 187:
Page 188 and 189:
Page 190 and 191:
Page 192 and 193:
Page 194 and 195:
Page 196 and 197:
Page 198 and 199:
Page 200 and 201:
Page 202 and 203:
Page 204 and 205:
Page 206 and 207:
Page 208 and 209:
Page 210 and 211:
Page 212 and 213:
Page 214 and 215:
Page 216 and 217:
Page 218 and 219:
Page 220 and 221:
Page 222 and 223:
Page 224 and 225:
Page 226 and 227:
Page 228 and 229:
Page 230 and 231:
Page 232 and 233:
Page 234 and 235:
Page 236 and 237:
Page 238 and 239:
Page 240 and 241:
Page 242 and 243:
Page 244 and 245:
Page 246 and 247:
Page 248 and 249:
Page 250 and 251:
Page 252 and 253:
Page 254 and 255:
Page 256 and 257:
Page 258 and 259:
Page 260 and 261:
Page 262:
show all

2008 Annual Monitoring Report (pdf 10.9MB) - Bolsa Chica ...

Create successful ePaper yourself

Delete template?

Save as template?