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Marine: a Long-Term Monitoring Program for Detecting Change in Rocky Intertidal Environments

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Marine: a Long-Term Monitoring Program for Detecting Change in Rocky Intertidal Environments 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--Egregia menziesii Rockweed--Hesperophycus californicus Silvetia compressa Turfweed--Endocladia muricata Surfgrass--Phyllospadix 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 algae 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 Lottia gigantea (Owl Limpet) • Large and easy to catch and long history of collection by humans • Humans select larger Owl Limpets • Recent studies (Kido & Murray 2003; Roy et. al 2003; Lindberg et. al 1998; Pombo & Escofet 1996) show reduced sizes at local sites where 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 Biodiversity 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.
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