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

More documents

Recommendations

Info

Bolsa Chica Lowlands Restoration Monitoring 2008 Annual Report central and east MTBs) are species that are tolerant of highly saline soils. This relictual marsh is almost entirely composed of large expanses of pickleweed (Sarcocornia pacifica and Arthrocnemum subterminale). The pickleweed quality varies throughout the site from tall and robust, to short in stature and desiccated. Other species common in the salt marsh in low densities included: salt grass (Distichlis spicata), saltwort (Batis maritima), and alkali heath (Frankenia salina). The majority of this salt marsh habitat is of moderate quality based on its fairly expansive nature, isolation from human disturbance, and limited infestation by exotic and upland species. While there is low plant diversity within this habitat, such conditions are normal for coastal salt marsh habitats and especially so for non-tidal marshes that experience hypersaline sediment conditions and the environmental extremes of wet and dry seasons and years. More functional coastal salt marsh habitat is now present in the FTB (on Rabbit Island) and Muted Pocket Marsh, both of which received daily tidal flushing following the restoration completion. Additionally, in March 2008 the west MTB was opened to muted influence from the FTB, with the salt marsh receiving daily tidal flushing for the first time in many decades. This resulted in the inundation of large areas of pickleweed for some or nearly all of each day. In some areas the inundation frequency may be greater than the tolerance of the pickleweed; those areas are expected to convert to open mudflat in future years. As noted above, cordgrass was not included in the coastal salt marsh mapping in order to better track its spread over time. Disturbed Southern Coastal Salt Marsh This habitat category was used to distinguish areas of southern coastal salt marsh that were degraded due primarily to disturbance by heavy equipment and vehicles associated with both the construction elements of the restoration program and the on-going contamination remediation activities within the oil field. This category was also used for the unvegetated sidecast piles of sediment place on either side of the channels that were dug out of the marsh as part of the restoration of the MTBs. These will be re-categorized in future assessments if salt marsh vegetation becomes reestablished. Sidecast mounds remaining from channel excavation. Cordgrass New cordgrass growth with flowers. One year post-transplant, 196 m 2 of cordgrass was mapped at 10 of the 14 transplant sites (Figure 1-4). At most locations cordgrass was present in only portions of the original transplant site, and in some cases had spread laterally some distance out of the site. Within plots of cordgrass the shoot density ranged from 2 to 98 shoots/m 2 , with a mean of 23 shoots/m 2 . The canopy height ranged from 9 to 85 cm, with a mean of 52 cm. Nearly all cordgrass was flowering, with seeds seen scattered on the mudflat around the plants. Merkel & Associates, Inc. 23
August 22, 2007 cordgrass transplant sites - 0.3 hectare (0.7 acre) 8 9 August 21, 2008 cordgrass distribution - 0.02 hectare (0.05 acre) Numbers are transplant IDs 7 11 10 1 12 6 5 4 3 2 13 14 0 200 400 800 Meters Full Tidal Basin cordgrass distribution Bolsa Chica Lowlands Restoration Project Figure 1-4 Merkel & Associates, Inc.
Page 2 and 3: Bolsa Chica Lowlands Restoration Pr
Page 4 and 5: 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 80 and 81:
Bolsa Chica Lowlands Restoration Mo
Page 82 and 83:
Page 84 and 85:
Page 86 and 87:
Page 88 and 89:
Page 90 and 91:
Page 92 and 93:
Page 94 and 95:
Zone PM 2 9 10 11 12 13 14 19 20 21
Page 96 and 97:
Page 98 and 99:
Page 100 and 101:
Page 102 and 103:
Page 104 and 105:
Page 106 and 107:
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?