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

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6.0 Riprap Biota 2.5 cm-wide chisel. Scrapings were placed in approximately 0.333 mm mesh labeled bags (panty hose), transferred to jars labeled with station identification numbers, and fixed in 10% buffered formalin. Relatively large organisms observed by the diving biologists in the vicinity of the quadrats were also noted. In the laboratory, scraped quadrat samples were sorted into major taxonomic groups, including molluscs, polychaetes, crustaceans, echinoderms, minor invertebrate phyla (others), and algae. Organisms were identified to the lowest practicable taxon (usually species) and counted. Algae and colonial animals were classified as present, common, or abundant based on the presence of one, two to five, or more than five colonies or holdfasts per sample, respectively. Wet weight biomass was measured for each of the six taxonomic groups. 6.2.2 Data Analyses Count and biomass data for the scraped samples were entered into a database from the taxonomic laboratory sheets and reviewed for completeness. Data for these samples are presented as abundance and biomass per 0.01 m 2 (7.5 cm by 15 cm area). The number of unique species was calculated for each station. Statistical analyses (Analysis of Variance, t- test) were performed to test for differences between box core and Van Veen samplers. Diversity was calculated with three different indices, which are derived measures based upon the number of species (species richness) and their abundances (equitability). The Shannon- Wiener diversity index tends to emphasize the equitability of the species distribution in a community. The Margalex Index incorporates the number of species and total number of individuals. The Dominance Index computes the number of species that account for 75% of the total abundance. 6.3 COMMUNITY SUMMARY MEASURES 6.3.1 Abundance A total of 16,528 invertebrates per 0.01 m 2 was collected from riprap scrapings during the winter and summer surveys combined (Table 6.3-1). Mean total abundances (mean of the eight stations) were highest in the lower intertidal (233 per 0.01 m 2 ), lowest in the upper intertidal (140 per 0.01 m 2 ), and intermediate in the subtidal zone (183 per 0.01 m 2 ) (Table 6.3-1). Mean abundances ranged highest on the Middle Breakwater (Station LARR1) (185 to 670 per 0.01 m 2 ) in the outer harbor. Otherwise mean abundances were similar among inner and outer harbor stations. Mean abundances at other outer harbor stations ranged from 14 to 276 per 0.01 m 2 across tide zones. Mean abundances at inner harbor stations ranged from 55 to 254 per 0.01 m 2 across tide zones. Differences in mean abundances generally were similar among stations that varied in substrate type with few exceptions. For example, mean abundances across tide zones were similar at Station LARR3 located on a pier piling (150 to 254 per 0.01 m 2 ), Station LBRR2 located on 2008 Biological Surveys of Los Angeles and Long Beach Harbors 6–3 April 2010
6.0 Riprap Biota relatively small boulders (122 to 223 per 0.01 m 2 ), and Station LARR4 located initially on cement slabs and relocated to riprap (128 to 226 per 0.01 m 2 ). The lowest mean abundances across surveys were observed at Station LBRR4 located in the Long Beach Southeast Basin and at Station LARR2 located in the Cerritos Channel (55 to 118 per 0.01 m 2 ). 6.3.2 Biomass A total of approximately 2.4 kg of biomass was collected among all stations and surveys (Table 6.3-1). Mean biomass was similar among depth zones, ranging from 24.1 to 25.6 g/0.01 m 2 . Mean biomass ranged highest across tide zones on piling habitat at Station LARR3 in the inner harbor (69 to 102 g). The second highest mean biomass values were collected in upper intertidal and subtidal zones at Station LBRR2 in the inner harbor. There were few other differences in mean biomass among stations. 6.3.3 Number of Species A total of 334 species was collected across surveys and stations (Table 6.3-1). The number of species substantially increased between upper and lower intertidal depths. On average, 12 species were collected in the upper intertidal, and 38 to 40 species were collected in the lower intertidal and subtidal zones, respectively. There was no obvious pattern in number of species between inner and outer harbor stations. The number of species ranged highest from upper intertidal though subtidal depths at outer harbor Station LARR1 on the Middle Breakwater (25 to 62/0.01 m 2 ) and in the inner harbor on piling habitat at Station LARR3 (28-42/0.01 m 2 ). There was a broader range in number of species across tide zones at other stations with substantially more collected in lower intertidal and subtidal zones than in the upper intertidal. Mean number of species ranged from 6 to 53/0.01 m 2 across tide zones at other outer harbor stations. Mean number of species at other inner harbor stations ranged from 5 to 60/ 0.01 m 2 across tide zones. 6.3.4 Diversity and Dominance Mean diversity index values (Shannon-Wiener, Margalef, Dominance) were lower in the upper intertidal and similarly high in the lower intertidal and subtidal zones (Table 6.3-1). Mean Shannon-Wiener values across stations were 1.48 for the upper intertidal, 2.55 for the lower intertidal, and 2.54 for the subtidal zone. Mean Margalef values were 2.3 in the upper intertidal, 5.98 in the lower intertidal, and 6.51 in the subtidal zone. Similarly, Dominance values were 3.44 in the upper intertidal, 6.56 in the lower intertidal, and 7.63 in the subtidal zone. Diversity values were relatively similar among inner and outer harbor stations. However, Stations LARR1 and LBRR1, located on breakwater habitats in the outer harbor, had relatively higher values across depth zones. Station LARR3 on piling habitat in the inner harbor also had relatively high values in the upper intertidal; however, lower intertidal and subtidal values were within the range of other stations. 6.4 SPECIES COMPOSITION 6.4.1 Scraped Quadrats Crustaceans were numerically dominant with an average of 99 individuals/0.01 m 2 collected across tide zones (Tables 6.3-2). Crustacean mean total abundance was similar among the different depth zones with 94/0.01 m 2 in the upper intertidal, 120/0.01 m 2 in the lower intertidal, and 82/0.01 m 2 in the subtidal. 6–4 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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8.0 Eelgrass 2002) inferred that th
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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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