MARINe: A Long-Term Monitoring Program for Detecting Change in Rocky Intertidal Environments

Steve Murray CSU Fullerton Richard F. Ambrose UCLA Jack Engle UCSB Pete Raimondi UCSC Mary Elaine Dunaway U.S. Minerals Management Service MARINe (33 Unique Partners) MARINe Sites

Core Monitoring Sites (n = 80) MARINe Core Monitoring Sites

MARINe South (San Luis Obispo – San Diego Counties) ¾ 57 sites: 34 mainland + 23 island ¾ 3 sites target abalone only ¾ Longest monitoring period = 23 yrs (since 1982) MARINe North (Del Norte – Monterey Counties) ¾ 23 sites ¾ 8 sites target abalone only ¾ Longest monitoring period = 6 yrs MARINe Core Monitoring Sites

Sampling Frequency Semi-Annual (Spring/Fall) * south of San Francisco Annual (Summer) * north of San Francisco Core Monitoring Program: South

34 mainland sites 23 island sites

Point Conception Species Monitored

• Target species (13): Anemones--Anthopleura elegantissima/sola Barnacles--Pollicipes polymerus Tetraclita rubescens Chthamalus dalli/fissus/Balanus glandula Black abalone--Haliotis cracherodii Owl limpets--Lottia gigantea California mussels--Mytilus californianus Seastars--Pisaster ochraceus Boa Kelp-- menziesii Rockweed--Hesperophycus californicus Silvetia compressa Turfweed--Endocladia muricata Surfgrass-- scouleri/torreyi • Core species: found in plots and transects in association with Target species •Optional species Sampling Methods Sampled Spring and Fall each year Fixed Photoplots Mussels, barnacles, rockweed, anemones, turf Sampling Methods Sampled Spring and Fall each year

• Fixed Circular Plots –Owl limpets • Band Transects & Irregular plots – Seastars, abalone • Line Transects –Surfgrass The Value of Regional Monitoring Programs

MARINe is a Regional Monitoring Program Silvetia % Cover

Pt. Conception & North 120

100

80

60

COVER ALEG 40 BOA CAY

20 GPT HAZ OCC 0 PSN 1990 1995 2000 2005 SHB DATE STA (Owl Limpet) Roy et. al 2003; Lindberg duced sizes at local sites where e history of collection by humans

gigantea and long 996) show r 1 er Owl Limpets

Lottia & Escofet umans select larg ecent studies (Kido & Murray 2003; arge and easy to catch L H R • • • 1998; Pombo humans are numerous Legend 33 MARINe Sites Access Category San Luis Obispo 1 – Open Access 2 - Protected 3 - Islands

Los Angeles

San Diego

Mexico 150 0.14 1

0.12 Proportion perBar 100 n = 949 0.10 Smaller mean, median, 0.08 Count 0.06 and maximum Limpet 50 0.04 0.02 sizes in open access 0 0.00 0.10 80 sites

70 2 0.08 Proportion perBar 60 n = 847 50 0.06

Count 40 0.04 30 Hypotheses 20 0.02 10 Ho: Humans are taking the large 0 0.00 0.09 limpets wherever they can 100 3 0.08 Proportion perBar 0.07 80 n = 1227 0.06 Ha1: Oystercatchers 60 0.05 Count 0.04 40 0.03 Ha2: Visitor (Trampling) impact 0.02 20 0.01 Ha3: Natural Geographic clines in size 0 0.00 0 20 40 60 80 100 120 Shell LengthSIZE (mm) MARINe Database

• Microsoft Access database by SCCWRP in 2003-2004 • Relational database for core monitoring data • Currently contains ~ 1 million records • Photo database planned MARINe Field Logs Surveys Distributions and Abundances Site Comparisons Community data

Alegria, S.B. Co. Stress: 0.19

Community Surveys mussel shoals sandhill terrace_2 carpinteria coal oil pt

starfish pt terrace old stairs

arroyo hondo

bob creek chileansanta memorial mariaano creek nuevo whites pt alegria shaws cove

ecola cape burntarago hill scott paradise cove scripps fogarty creek crystal cove ford pt sri pt fermin governmentfraser pt pt scijohnsons_2 dana point johnsons lee valleysri sci taylor pt cape mendocinobodega scott_2 cabrillo zone 3 sea ranch stillwater crookcuyler ptcuyler_2 smi harbor smi bolinas pt mill creek boat house trailer sci sea lion rookery sbi prisoners sci east pt sri cabrillo zone 1 stairs landing cove shelter cove pt sierra nevada shell beach hazards forneyfrenchys sci cove ai fossil reef sri willows sci andrew molera middle ai pt lobos hopkins_2 little harbor catalina nw talcott sri cannonball island fitzgerald cayucos bird rock

pigeon pt hopkins This nMDS was constructed using only those species that had a total of at least 25 cambria points across all sites (118 total spp). Data were sq. rt. transformed.

WA OR NC CC SC CI Melissa Wilson, Pete Raimondi Mark M. Littler’s Studies Stress 0.09 Corona del Mar MDS Ordinations Mainland Sites

1999-2000 Samples differ from seasonal and annual variation Stress 0.09 Whites Point exhibited by 1970s Samples

Steve Murray State of the Shoreline Report A key goal is making data directly available to managers and decisionmakers A Key Goal of MARINe is Increasing Public Awareness of Tidepools and How They Can Help Protect these Resources www.MARINe.gov MARINe Partners