California State Waters Map Series — Hueneme Canyon and vicinity, California
In 2007, the California Ocean Protection Council initiated the California Seafloor Mapping Program (CSMP), designed to create a comprehensive seafloor map of…
Public-domain full text preserved in the Mountain Man Mining Library. Original source: pubs.usgs.gov.
Goleta Oxnard Ventura Santa Barbara Goleta Oxnard Ventura Santa Barbara Goleta Oxnard Ventura Santa Barbara Goleta Oxnard Ventura Santa Barbara Goleta Oxnard Ventura Santa Barbara INDEX MAP TO MAP AREAS WITHIN SANTA BARBARA CHANNEL REGION Goleta Oxnard Ventura Santa Barbara Offshore Refugio Beach Offshore Coal Oil Point Offshore Santa Barbara Offshore Carpinteria Offshore Ventura Hueneme Canyon and Vicinity DISCUSSION Information presented on this sheet is based on ground-truth surveys (see sheet 6) conducted by the U.S. Geological Survey and NOAA National Marine Fisheries Service for the California Seafloor Mapping Program. Benthic community structure was determined from 35 video towed-camera transects within California’s State Waters limit in the Santa Barbara Channel. These transects produced a total of 923 10-second observations from Refugio Beach (34.5° N., 120.1° W.) to Hueneme Canyon (34.1° N., 119.2° W.). Presenceabsence data were collected for 29 benthic, structure-forming nonmobile taxa. Generalized linear models were developed to predict the probability of occurrence and to create predictive-distribution maps for the most frequently observed macro-invertebrates (tall sea pens, short sea pens, cup corals, hydroids, and brittle stars) (Krigsman and others, 2012). This sheet shows five predictive-distribution maps (Maps A–E) for the Hueneme Canyon and vicinity map area, which is depicted by a red outline in the Santa Barbara Channel regional maps (Map F). Covariates in the generalized linear models were geographic location, bathymetry, and seafloor character. Geographic location was derived from analysis of five of the six map areas along the mainland coast of the Santa Barbara Channel, excluding the offshore Carpinteria map area where data were insufficient. From the five areas, three statistically different locations were identified on the basis of a community-structure analysis of the invertebrate taxa and associated covariates (sometimes resulting in distinctly different predicted distributions across map boundaries): (1) the Hueneme Canyon and vicinity and offshore Ventura map areas; (2) the offshore Santa Barbara and offshore Coal Oil Point map areas; and (3) the offshore Refugio Beach map area. Data for the two other covariates were provided in sheet 2 (shaded-relief bathymetry) and sheet 5 (seafloorcharacter map). Although probability of occurrence for each invertebrate taxon was predicted for the entire Santa Barbara Channel (Map F), this sheet highlights predictions for the Hueneme Canyon and vicinity map area (Maps A–E). Observations based on depth were limited by the capability of the towed camera sled; as a result, no predictions were made below depths of 150 m (in other words, on the continental slope or in Hueneme Canyon). Tall and short sea pens (Maps A and B, respectively) had a moderate predicted probability of occurrence along the edge of the canyon and in deep waters southeast of the canyon. The seafloor within the area surrounding Hueneme Canyon lacks hard substrate coverage (mixed sediment and (or) rugose rock); as a result, minimal to no areas within California’s State Waters were predicted to be where cup corals might occur (Map D). Similarly, the probability of observing hydroids within the same area was also minimal; however, the area along the edge of the canyon had moderate probabilities of occurrence (Map C). Brittle stars in the sediment, observed by arms protruding from the substrate, had the greatest probability of occurrence of all the invertebrates predicted to occur within this map area (Map E). REFERENCES CITED Gotshall, D.W., 2005, Guide to marine invertebrates—Alaska to Baja (2d ed.): Monterey, Calif., Sea Challengers, 117 p. Krigsman, L.M., Yoklavich, M.M., Dick, E.J., and Cochrane, G.R., 2012, Models and maps—Predicting the distribution of corals and other benthic macro-invertebrates in shelf habitats: Ecosphere, v. 3(1), article 3, 16 p., doi:10.1890/ES11-00295.1. EXPLANATION Probability of occurrence High (99.0%) Low (0.0%) Area of “no data”—Areas from shoreline (defined as Mean Higher High Water) out to 10-m water depth not mapped owing to difficulties in ship-based surveying caused by sea state (for example, waves, wind, or currents); areas beyond 3-nautical-mile limit of California’s State Waters were not mapped as part of California Seafloor Mapping Program 3-nautical-mile limit of California’s State Waters CALIF. 8 Nautical Miles Kilometers 120° 119°40' 119°20' 119° 34° 34°20' MAP LOCATION Ventura Santa Barbara Anacapa Island Santa Cruz Island Santa Rosa Island Area of Map Santa Barbara Channel Limit of California’s State Waters 1National Oceanic and Atmospheric Administration, National Marine Fisheries Service; 2U.S. Geological Survey Predicted Distribution of Benthic Macro-Invertebrates, Hueneme Canyon and Vicinity and Santa Barbara Channel Region, California By Lisa M. Krigsman,1 Mary M. Yoklavich,1 Guy R. Cochrane,2 and Nadine E. Golden2 Any use of trade, product, or firm names in this publication is for descriptive purposes only and does not imply endorsement by the U.S. Government This map was printed on an electronic plotter directly from digital files. Dimensional calibration may vary between electronic plotters and between X and Y directions on the same plotter, and paper may change size due to atmospheric conditions; therefore, scale and proportions may not be true on plots of this map. For sale by U.S. Geological Survey, Information Services, Box 25286, Federal Center, Denver, CO 80225, 1–888–ASK–USGS Digital files available at ://pubs.usgs.gov/sim/3225/ Suggested Citation: Krigsman, L.M., Yoklavich, M.M., Cochrane, G.R., and Golden, N.E., 2012, Predicted distribution of benthic macro-invertebrates, Hueneme Canyon and vicinity and Santa Barbara Channel region, California, sheet 12 in Johnson, S.Y., Dartnell, P., Cochrane, G.R., Golden, N.E., Phillips, E.L., Ritchie, A.C., Kvitek, R.G., Greene, H.G., Krigsman, L.M., Endris, C.A., Clahan, K.B., Sliter, R.W., Wong, F.L., Yoklavich, M.M., and Normark, W.R. (S.Y. Johnson, ed.), California State Waters Map Series__Hueneme Canyon and vicinity, California: U.S. Geological Survey Scientific Investigations Map 3225, pamphlet 41 p., 12 sheets, available at ://pubs.usgs.gov/sim/3225/. SCALE 1:50 000 1 KILOMETER 7 000 FEET 2 MILES SCALE 1:400 000 25 KILOMETERS 70 000 FEET 10 MILES ONE MILE 0.869 NAUTICAL MILES APPROXIMATE MEAN DECLINATION, 2012 13° MAGNETIC NORTH TRUE NORTH Predicted distributions mapped in 2011 GIS database and digital cartography by Nadine E. Golden and Eleyne L. Phillips Edited by Taryn A. Lindquist Manuscript approved for publication July 25, 2012 Onshore elevation data from NOAA Coastal Services Center (data collected by EarthData International in 2002-2003) and from U.S. Army Corps of Engineers (data collected by Fugro Pelagos in 2009). California's State Waters limit from NOAA Office of Coast Survey Universal Transverse Mercator projection, Zone 11N Map F – Predicted-Distribution Maps for Santa Barbara Channel Region Map E – Predicted Distribution of Brittle Stars, Hueneme Canyon and Vicinity Map D – Predicted Distribution of Cup Corals, Hueneme Canyon and Vicinity Map C – Predicted Distribution of Hydroids, Hueneme Canyon and Vicinity Map B – Predicted Distribution of Short Sea Pens, Hueneme Canyon and Vicinity Map A – Predicted Distribution of Tall Sea Pens, Hueneme Canyon and Vicinity 119°10' 119°15' 119°20' 34°10' 34°5' Oxnard Port of Hueneme Channel Islands Harbor Hueneme Canyon 119°10' 119°15' 119°20' 34°10' 34°5' Oxnard Port of Hueneme Channel Islands Harbor Hueneme Canyon 119°10' 119°15' 119°20' 34°10' 34°5' Oxnard Port of Hueneme Channel Islands Harbor Hueneme Canyon 119°10' 119°15' 119°20' 34°10' 34°5' Oxnard Port of Hueneme Channel Islands Harbor Hueneme Canyon 119°10' 119°15' 119°20' 34°10' 34°5' Oxnard Port of Hueneme Channel Islands Harbor Hueneme Canyon E) Predicted Distribution of Brittle Stars D) Predicted Distribution of Cup Corals C) Predicted Distribution of Hydroids B) Predicted Distribution of Short Sea Pens A) Predicted Distribution of Tall Sea Pens Photograph of brittle stars. Brittle stars are type of sea star in class Ophiuroidea; commonly found buried in mud or sand, exposed only by their long, slender arms. Photograph of cup corals. Cup corals are sessile Cnidarians; found solitary or in large colonies, from intertidal zone to 150 m deep (Gotshall, 2005), on mixed and rugose rock. Photograph of Hydroids. Hydroids are sessile Cnidarians (class Hydrozoa); found from intertidal zone to deep ocean depths, on soft, mixed, and hard sediment. Photograph of tall sea pen. Tall sea pens are sessile Cnidarians (order Pennatulacea) that are greater than 60 cm in height; found on soft and mixed sediment. Photograph of short sea pen. Short sea pens are sessile Cnidarians (order Pennatulacea) that are less than 60 cm in height; found on soft and mixed sediment. Scientific Investigations Map 3225 Sheet 12 of 12 Pamphlet accompanies map U.S. Department of the Interior U.S. Geological Survey