2008 Annual Monitoring Report (pdf 10.9MB) - Bolsa Chica ...
2008 Annual Monitoring Report (pdf 10.9MB) - Bolsa Chica ...
2008 Annual Monitoring Report (pdf 10.9MB) - Bolsa Chica ...
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
<strong>Bolsa</strong> <strong>Chica</strong> Lowlands Restoration <strong>Monitoring</strong><br />
<strong>2008</strong> <strong>Annual</strong> <strong>Report</strong><br />
Table 1-9. Summary of fish mass (g) in the Muted Tidal Basins in <strong>2008</strong>.<br />
April <strong>2008</strong><br />
July <strong>2008</strong> October <strong>2008</strong><br />
Species West MTB Central MTB West MTB Central MTB West MTB<br />
California Killifish 33.5 14.7<br />
Topsmelt 8.0 70.2 12.8 207.7 342.3<br />
Atherinid, unidentified juvenile 12.0<br />
Bay Pipefish 2.4<br />
Barred Pipefish 0.1<br />
Staghorn Sculpin 10.7<br />
Striped Mullet 0.3<br />
Lonjaw Mudsucker 4.8 13.1 117.8<br />
Cheekspot Goby 2.8 1.1<br />
Arrow/Shadow Goby complex 2.9 0.4<br />
Total Mass (g) 36.4 75.0 28.7 242.3 475.2<br />
Area Sampled (m 2 ) 126 155 310 170 129<br />
Muted Pocket Marsh<br />
The Muted Pocket Marsh was sampled with the large beach<br />
seine and was generally found to be low in diversity but high in<br />
abundance of species foraged on by many birds. A total of nine<br />
species were captured over the year (Table 1-10). Topsmelt and<br />
California killifish were the most abundant year round, reaching<br />
their peaks in July. Staghorn sculpin and longjaw mudsucker<br />
were occasionally abundant. Diamond turbot was the only<br />
flatfish captured. Both arrow and shadow gobies were captured.<br />
Four non-native yellowfin gobies were captured in April.<br />
Beach seining the Muted Pocket Marsh.<br />
Table 1-10. Summary of fish abundance (# of individuals) in the Muted Pocket Marsh in <strong>2008</strong>.<br />
Species January <strong>2008</strong> April <strong>2008</strong> July <strong>2008</strong> October <strong>2008</strong><br />
California Killifish 6 47 879 88<br />
Topsmelt 190 82 591 293<br />
Staghorn Sculpin 1 18<br />
Yellowfin Goby 4<br />
Longjaw Mudsucker 1 58<br />
Cheekspot Goby 10<br />
Arrow/Shadow Goby complex 18 11 1<br />
Diamond Turbot 3 5<br />
Total Abundance (individuals) 200 185 1,539 382<br />
Area Sampled (m 2 ) 1,301 1,206 938 1,301<br />
The mass of fish captured in the Muted Pocket Marsh is presented by species in Table 1-11. Topsmelt<br />
accounted for 84% of the total mass during the year. Although abundance of all fish was greatest in<br />
July, the total mass was highest in October with the capture of larger, more mature topsmelt. The<br />
diamond turbot captured in January were very small juveniles (20-27 mm standard length), while the<br />
five captured in April were larger juveniles, ranging in standard lengths from 34-75mm.<br />
Merkel & Associates, Inc. 50