appendix b final 2008 biological surveys of los angeles and long ...

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6.0 Riprap Biota Polychaetes were the second most abundant taxonomic group with a mean abundance of 33 individuals/0.01 m 2 across tide zones. Mean polychaete abundance was substantially greater in lower intertidal and subtidal zones (38 to 45/0.01 m 2 ) than in the upper intertidal (15/0.01 m 2 ). Echinoderms, molluscs, and other phyla similarly accounted for a mean abundance of 12 to 14 individuals/0.01 m 2 across tide zones. Similar to crustaceans, molluscs had a similar mean abundance across depth zones with 14/0.01 m 2 in the upper intertidal, 12/0.01 m 2 in the lower intertidal, and 17/0.01 m 2 in the subtidal. Minor phyla generally were more abundant at lower intertidal (24/0.01 m 2 ) and subtidal depths (10/0.01 m 2 ) than in the upper intertidal (3/0.01 m 2 ). Echinoderms were absent from the upper intertidal, but had a similar mean abundance in the lower intertidal and subtidal (21/0.01 m 2 ). Crustaceans and polychaetes were the most diverse taxonomic groups with mean numbers of species ranging from 2 to 24 and 0 to 25 across stations, respectively, and overall total means of 10 to 11 across tide zones (Table 6.3-3). All taxonomic groups generally had fewer species collected in the upper intertidal compared to lower intertidal and subtidal zones at most stations. Molluscs were moderately diverse with mean numbers of species ranging from 2 to 10 across stations and an overall mean of 6 across tide zones. Echinoderms and minor phyla were less diverse. Mean numbers of species ranged from 0 to 3 for echinoderms and 0 to 6 for minor phyla across stations; overall total means across tide zones were 1 and 2 for these two taxonomic groups, respectively. Molluscs dominated the mean biomass values across depth zones (Table 6.3-4). However, crustacean biomass values were similarly high or greater at most stations in the upper intertidal due to the relatively high occurrence of barnacles and weight associated with their calcite shells. Echinoderms and minor phyla biomass contributions were more localized according to station. Generally, numbers of species, abundance, and biomass of taxonomic groups were similar among inner and outer harbor stations with few exceptions. Mean numbers of species and abundance, particularly crustaceans, ranged higher at outer harbor Stations LARR1 and LBRR1. A greater number of polychaete species was collected at Station LBRR3, although only in the subtidal zone. Molluscs contributed to relatively greater biomass values at inner harbor Stations LARR3 and LBRR2. 6.4.2 Diver Observations Dominant epifaunal invertebrates included barnacles (e.g., Balanus spp. and Chthalamus fissus), and mussels (Mytilus galloprovincialis). Other commonly observed crustacean species included California spiny lobster (Panulirus interruptus), crabs (Mimulus foliatus, Pugettia spp.), and hermit crabs (Pagurus spp.). Molluscs also included chitons (e.g., Mopalia muscosa), chestnut cowrie (Cypraea spadicea), gem murex (Maxwellia gemma), Norris's top shell (Norrisia norrisi), rock scallops (Crassedoma giganteum), scaled wormsnail (Serpulorbis squamigerus), sea slugs (e.g., Hermissenda crassicornis, Navanax inermis, Peltodoris nobilis), turbon snails (Tegula spp.), and wavy turbon topsnail (Megastrea undosa). Relatively common echinoderms included red and purple sea urchins (Strongylocentrotus franciscanus, P. purpuratus), seastars (Asterina miniata, Pisaster gigartina, P. ochraceous), and 2008 Biological Surveys of Los Angeles and Long Beach Harbors 6–5 April 2010
6.0 Riprap Biota sea cucumber (Parastichopus parvimensis). Several species of cnidarians were observed, including colonial cup corals, aggregating anemone (Anthopleura elegantissima), giant green anemone (A. xanthogrammica), burrowing anemones (Pachycerianthus spp.), strawberry anemone (Corynactis californica), and sea fans (Muricea californica, M. fructosa). Bryozoans (e,g., Diaporecia californica), sponges, and tunicates (unidentified colonial, Styela montereyensis ) were very common in the lower intertidal and subtidal zones. Relatively common fish species included barred sand bass (P. nebulifer), blacksmith (Chromis punctipinnis), black perch (Embiotoca jacksoni), California sheepshead (Semicossyphus pulcher), horneyhead turbot (Pleuronichthys verticalis), garibaldi (Hypsypops rubicundus), giant kelp fish (Heterostichus rostratus), kelp bass (Paralabrax clathratus), and opaleye (Girella nigricans). Macroalgae such as giant kelp (Macrocystis pyrifera), feather boa kelp (Egregia menziesii), and sargassum (Sargassum muticum) occurred in subtidal areas at many of the stations. A variety of encrusting coralline and other small attached algae also were relatively common, including Chondracanthus sp., Colpomenia peregrina, Dictyota sp., and Ulva sp. Detailed information on kelp and macroalgae in outer and inner harbor locations is discussed in Chapter 7. 6.5 DOMINANT SPECIES The acorn barnacles Chthalamus fissus and Balanus glandula comprised 43% and 19% of the overall total abundance, respectively, in the upper intertidal zone (Table 6.3.5). Two amphipod species, Caprella simia and Photis spp. 1, and the dwarf brittlestar (Amphipholis squamata) accounted for the highest percent abundances (individually ranging from 6.5 to 12%) in the upper intertidal and subtidal zones. There was no obvious difference in dominant species abundance between inner and outer harbor stations in the upper intertidal zone. There also were few differences in overall percent abundance of dominant species in the lower intertidal and subtidal zones of several of the inner and outer harbor stations. However, the highest abundances of several dominant species were collected in the lower intertidal and subtidal zones at outer harbor breakwater Stations LARR1 or LBRR1, including amphipods (e.g., Ampelisca lobata, Caprella californica, Ericthonius brasiliensis, Gammaropsis thompsoni, Monocorophium acherusicum, Photis spp.1), cumaceans (Cumella californica), and polychaetes (Pseudopotamilla socialis, Syllis gracilisspecies complex). Several of these species also were numerically dominant at Station LARR4 in outer Los Angeles Harbor (i.e., Caprella californica, Cumella californica, Photis spp. 1). A few species were collected in greatest abundance on the piling habitat surveyed at Station LARR3, including tunicates (Acidia spp.), dwarf brittlestars (Amphipholis squamata), and mussels (Mytilus galloprovincialis). 6–6 2008 Biological Surveys of Los Angeles and Long Beach Harbors April 2010
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APPENDIX B FINAL 2008 BIOLOGICAL SU
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FINAL 2008 BIOLOGICAL SURVEYS OF LO
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Table of Contents 3.4.3 Summary of
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Table of Contents 8.2.1 Aerial Phot
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Table of Contents Table 3.4-2. Tabl
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Table of Contents Table 8.3-3. Tabl
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Table of Contents Figure 6.2-1. Rip
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Table of Contents This page intenti
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Executive Summary otter trawls to s
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Executive Summary Van Veen) and ana
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Executive Summary which was collect
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1.0 Introduction 1.0 INTRODUCTION T
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1.0 Introduction 1.4 STUDY OBJECTIV
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1.0 Introduction Historical compari
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1.0 Introduction Figure 1.1-2. Map
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CHAPTER 2 WATER QUALITY
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2.0 Water Quality The CTD was deplo
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2.0 Water Quality Outer Harbor area
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2.0 Water Quality Table 2.2-1. Wate
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2.0 Water Quality Figure 2.2-1. Wat
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2.0 Water Quality This page intenti
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3.0 Adult and Juvenile Fishes 3.0 A
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3.0 Adult and Juvenile Fishes speci
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3.0 Adult and Juvenile Fishes and b
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3.0 Adult and Juvenile Fishes sampl
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3.0 Adult and Juvenile Fishes No si
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3.0 Adult and Juvenile Fishes croak
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3.0 Adult and Juvenile Fishes gobie
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3.0 Adult and Juvenile Fishes Table
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3.0 Adult and Juvenile Fishes Figur
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CHAPTER 4 ICHTHYOPLANKTON
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4.0 Ichthyoplankton studies (Horn a
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4.0 Ichthyoplankton more likely to
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8.0 Eelgrass Table 8.3-2. Spring 20
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8.0 Eelgrass Table 8.3-4. Fall 2008
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8.0 Eelgrass Table 8.3-12. Oceanic
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8.0 Eelgrass Figure 8.3-2. Eelgrass
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8.0 Eelgrass Figure 8.3-6. Spatial
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9.0 Birds 9.0 BIRDS 9.1 INTRODUCTIO
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9.0 Birds changes in species number
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9.0 Birds the Brown Pelican populat
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9.0 Birds 9.4.2.10 9.4.2.11 9.4.2.1
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9.0 Birds 9.5.1 Distribution and Ab
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9.0 Birds discussed in Section 9.4.
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9.0 Birds Angeles Harbor. The relat
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9.0 Birds Table 9.4-1. Percent Comp
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9.0 Birds Table 9.4-3. Nest Numbers
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9.0 Birds Table 9.5-2. Species Comp
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9.0 Birds Table 9.5-4. Percent Comp
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9.0 Birds Table 9.6-1. Historical C
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9.0 Birds 70 12000 60 10000 50 40 3
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9.0 Birds 3500 shallow water sandy
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9.0 Birds 40 35 30 riprap aerial Nu
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9.0 Birds Number Observed 3500 3000
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9.0 Birds Figure 9.5-1. Total numbe
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9.0 Birds Number of Individuals 400
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9.0 Birds 7000 Mean Number of Indiv
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CHAPTER 10 MARINE MAMMALS
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10.0 Marine Mammals Gray whales dif
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10.0 Marine Mammals This page inten
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11.0 References 11.0 REFERENCES Abb
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11.0 References Dennison, W.C. and
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11.0 References Jacques, D.L., C.S.
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11.0 References North, W.J. 1983. S
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APPENDIX A STATION LOCATIONS
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Appendix A Station Coordinates (NAD
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Appendix B (A) Temperature (°C), S
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APPENDIX C FISHES
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Appendix C Table C-1. Combined Fish
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Appendix C LA01 LA02 LA03 LA04 LA05
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Appendix C Table C-3. Otter Trawl C
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Appendix C Table C-5. Otter Trawl B
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Appendix C Table C-7. Otter Trawl B
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Appendix C Table C-8. Lampara Catch
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Appendix C Table C-10. Lampara Catc
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Appendix C Scientific Name Table C-
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Appendix C Table C-14. Beach Seine
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Appendix D Table D-1. Ichthyoplankt
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Appendix D fish eggs (undeveloped)
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Appendix D fish eggs unid. unidenti
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fish eggs unid. unidentified fish e
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Appendix D Eggs Oligocottus / Clino
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Appendix D Eggs Rhinogobiops nichol
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Appendix D Juvenile Eggs Heterostic
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Appendix D Eggs Liparis spp. snailf
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Appendix D Juvenile Eggs Heterostic
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Appendix D Table D-11. Ichthyoplank
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APPENDIX E INFAUNA
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Appendix E Taxon LA-1 LA-10 LA-11 L
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Appendix E Protothaca laciniata Tax
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Appendix E Taxon LA1 LA2 LA3 LA4 LA
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Appendix E Table E-4. Otter Trawl,
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Appendix E Taxon LA1 LA2 LA3 LA4 LA
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Appendix E Octopus sp. 1 Philine sp
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Appendix E This page intentionally
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Appendix F Table F-1. Total Abundan
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Appendix F LARR-1 LARR-2 LARR-3 LAR
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APPENDIX G KELP AND MACROALGAE
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Appendix G Date Survey Site Observe
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Appendix G Species T1 T2 T3 T4 T5 T
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Appendix H APPENDIX H-1 AVIAN ECOLO
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Appendix H Table H-1. Avian Ecologi
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Appendix H GUILD 8 - UPLAND BIRDS G
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Appendix H APPENDIX H-2 NUMBER OF I
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Appendix H Table H-2. December A 20
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Appendix H Table H-3. December B 20
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Appendix H Table H-4. January A 200
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Appendix H Table H-5. January B 200
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Appendix H Table H-6. February A 20
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Appendix H Table H-7. February B 20
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Appendix H Table H-8. March A 2008
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Appendix H Table H-9. March B 2008
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Appendix H Table H-10. April A 2008
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Appendix H Table H-11. May A 2008 S
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Appendix H Table H-13. July A 2008
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Appendix H Table H-15. August B 200
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Appendix H Table H-16. September A
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Appendix H Table H-17. September B
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Appendix H Species Totals Zones 1 2
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Appendix H Species Totals Zones 1 2
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Appendix H Zones Species Totals 1 2
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Appendix H Zones Species Totals 1 2
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Appendix H Date ELEGANT TERN — OB
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APPENDIX I MARINE MAMMALS
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Appendix I Common Survey Station/ N
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Appendix I Common Name Survey Type
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Appendix I This page intentionally
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