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            <gmx:Anchor xlink:href="http://lod.bco-dmo.org/id/dataset/990951.rdf" xlink:actuate="onRequest">Species percent cover from species resilience and recovery experiments in the rocky intertidal zone of the Oregon Coast from 2011 to 2024</gmx:Anchor>
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                <gmx:Anchor xlink:href="http://orcid.org/0000-0002-2981-9517" xlink:title="ORCID" xlink:actuate="onRequest">Bruce A. Menge</gmx:Anchor>
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            <gco:CharacterString>Cite this dataset as: Gravem, S., Menge, B. A. (2026) Species percent cover from species resilience and recovery experiments in the rocky intertidal zone of the Oregon Coast from 2011 to 2024. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2026-01-30 [if applicable, indicate subset used]. http://lod.bco-dmo.org/id/dataset/990951 [access date]</gco:CharacterString>
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        <gco:CharacterString>Methods and Sampling: &amp;lt;p&amp;gt;The purpose of this experiment is to test the recovery rates of rocky intertidal communities to single or repeated disturbance and thereby measure the succession and resilience of the community, respectively. We initiated the experiment series in the low zone in 2011 by haphazardly locating, then permanently marking five pairs of 0.5 x 0.5 m low intertidal plots. In spring/early summer each year from 2011- 2024, we photographed, then cleared one plot of each pair of all macrobiota, including macrophytes and sessile invertebrates ('removal plots'). Adjacent uncleared reference plots were left intact (controls). We also added succession plots in the early 2020s that were cleared once and allowed to recover (succession plots). Removals were allowed to recover without further intrusion for 12 mo, when they were photographed and recleared for the next year's observations. &amp;amp;nbsp;Plot locations did not change. Mid and high experiments were added in the early 2020s as well to compare how recovery and resilience differed between intertidal zones.&amp;amp;nbsp;&amp;lt;/p&amp;gt;

&amp;lt;p&amp;gt;Percent cover of each species was estimated by inspecting photographs. The 0.5 x 0.5 m quadrats were subdivided into 0.1x0.1m subquadrats, each consisting of 4% cover. Abundances of each taxon were estimated by eye for each subquadrat, and totals were obtained by adding across all 25 subquadrats.&amp;amp;nbsp; We grouped species into functional groups for analysis (see Supplemental Files for taxon ids and more category information):&amp;lt;/p&amp;gt;

&amp;lt;div&amp;gt;&amp;lt;span style=&amp;quot;font-size:13px&amp;quot;&amp;gt;small barnacles = Chthamalus dalli, Balanus glandula&amp;lt;/span&amp;gt;&amp;lt;/div&amp;gt;

&amp;lt;div&amp;gt;&amp;lt;span style=&amp;quot;font-size:13px&amp;quot;&amp;gt;large barnacles = Semibalanus cariosus, Balanus nubilus&amp;lt;/span&amp;gt;&amp;lt;/div&amp;gt;

&amp;lt;div&amp;gt;&amp;lt;span style=&amp;quot;font-size:13px&amp;quot;&amp;gt;gooseneck barnacles = Pollicipes polymerus&amp;lt;/span&amp;gt;&amp;lt;/div&amp;gt;

&amp;lt;div&amp;gt;&amp;lt;span style=&amp;quot;font-size:13px&amp;quot;&amp;gt;mussels = Mytilus californianus, Mytilus trossulus&amp;lt;/span&amp;gt;&amp;lt;/div&amp;gt;

&amp;lt;div&amp;gt;&amp;lt;span style=&amp;quot;font-size:13px&amp;quot;&amp;gt;anemones = Anthopleura xanthogrammica, A. elegantissima&amp;lt;/span&amp;gt;&amp;lt;/div&amp;gt;

&amp;lt;div&amp;gt;&amp;lt;span style=&amp;quot;font-size:13px&amp;quot;&amp;gt;articulated corallines = Corallina vancouveriensis, Bossiella plumosa&amp;lt;/span&amp;gt;&amp;lt;/div&amp;gt;

&amp;lt;div&amp;gt;&amp;lt;span style=&amp;quot;font-size:13px&amp;quot;&amp;gt;red blades = Mazzaella splendens, M. flaccida, M. parksii, Pyropia/Porphyra, Gymnogongrus, Halosaccion,&amp;lt;/span&amp;gt;&amp;lt;/div&amp;gt;

&amp;lt;div&amp;gt;&amp;lt;span style=&amp;quot;font-size:13px&amp;quot;&amp;gt;filamentous reds = Polysiphonia, Microcladia, Endocladia, Odonthalia floccosa,&amp;amp;nbsp;&amp;lt;/span&amp;gt;&amp;lt;/div&amp;gt;

&amp;lt;div&amp;gt;&amp;lt;span style=&amp;quot;font-size:13px&amp;quot;&amp;gt;red turfs=&amp;amp;nbsp; Cryptopleura, Hymenena, Constantinea, Dilsea, Erythrophyllum, Neorhodomela&amp;lt;/span&amp;gt;&amp;lt;/div&amp;gt;

&amp;lt;div&amp;gt;&amp;lt;span style=&amp;quot;font-size:13px&amp;quot;&amp;gt;kelp = Hedophyllum, Alaria, Laminaria, Egregia,&amp;lt;/span&amp;gt;&amp;lt;/div&amp;gt;

&amp;lt;div&amp;gt;&amp;lt;span style=&amp;quot;font-size:13px&amp;quot;&amp;gt;ulvoids = Ulva&amp;lt;/span&amp;gt;&amp;lt;/div&amp;gt;

&amp;lt;div&amp;gt;&amp;lt;span style=&amp;quot;font-size:13px&amp;quot;&amp;gt;worms = serpulids, spirorbids, &amp;quot;worms&amp;quot; at RP form colonies, may be amphipods.&amp;lt;/span&amp;gt;&amp;lt;/div&amp;gt;

&amp;lt;div&amp;gt;&amp;lt;span style=&amp;quot;font-size:13px&amp;quot;&amp;gt;surfgrass = Phyllospadix scouleri, P. torreyi&amp;lt;/span&amp;gt;&amp;lt;/div&amp;gt;

&amp;lt;div&amp;gt;&amp;lt;span style=&amp;quot;font-size:13px&amp;quot;&amp;gt;colonial sessile inverts = Halichondria at YB, hydrozoans (?) at YB 7-14-2022L3S&amp;lt;/span&amp;gt;&amp;lt;/div&amp;gt;

&amp;lt;div&amp;gt;&amp;lt;br /&amp;gt;
Notes:
&amp;lt;div&amp;gt;&amp;lt;span style=&amp;quot;font-size:13px&amp;quot;&amp;gt;Pisaster in plots counted as bare space&amp;lt;/span&amp;gt;&amp;lt;/div&amp;gt;

&amp;lt;div&amp;gt;&amp;lt;span style=&amp;quot;font-size:13px&amp;quot;&amp;gt;Gymnogongrus counted as red blades&amp;lt;/span&amp;gt;&amp;lt;/div&amp;gt;

&amp;lt;div&amp;gt;&amp;lt;span style=&amp;quot;font-size:13px&amp;quot;&amp;gt;when mid zone PE plots started, placed S plots in winter disturbances, assumed start date was 1/1/2021&amp;lt;/span&amp;gt;&amp;lt;/div&amp;gt;

&amp;lt;div&amp;gt;&amp;lt;span style=&amp;quot;font-size:13px&amp;quot;&amp;gt;went back and separated Chth from Bal gl only in final sample date&amp;lt;/span&amp;gt;&amp;lt;/div&amp;gt;
&amp;lt;/div&amp;gt;</gco:CharacterString>
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        <gmx:Anchor xlink:href="http://lod.bco-dmo.org/id/award/865694.rdf" xlink:title="DEB-2050017" xlink:actuate="onRequest">Funding provided by NSF Division of Environmental Biology (NSF DEB) Award Number: DEB-2050017 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=2050017</gmx:Anchor>
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            <gmx:Anchor xlink:href="http://orcid.org/0000-0002-3857-9930" xlink:title="ORCID" xlink:actuate="onRequest">Sarah Gravem</gmx:Anchor>
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&lt;p&gt;In recent decades, ocean ecosystems, long thought to be immune to change, have undergone disruptions to their structure, diversity, and geographic range, yet the actual underlying reasons for such changes in oceanic biota are often unclear. Coastal intertidal zones (i.e., the shore between high and low tides) have long served as important ecological model systems because of advantages in accessibility and ease of observation, occupancy by easily studied and manipulated organisms of relatively short lifespans, and exposure to often severe environmental conditions. This research will address the stability of a well-known rocky shore system along the Oregon and California coasts. Prior long-term research indicates that, although casual observation suggests these systems are stable, in fact, they may be on the cusp of shifting into another state, losing iconic organisms like mussels and sea stars, and becoming dominated by seaweeds. These changes might be comparable to losing trees and large predators from terrestrial systems. This study would result in the training of undergraduates and graduate students, including individuals from under-represented groups. Additionally, this study would include outreach to the general public.&lt;/p&gt;
&lt;p&gt;The researchers will focus particularly on impacts of increasing and more variable warming on community recovery. For example, climate oscillations (e.g., El Niño), coastal upwelling, and particularly temperature have all changed in recent decades in ways leading to increased stress on intertidal biota. In apparent response, coastal ecosystems evidently have become less productive, organismal performance (growth, reproduction) has declined, and key dynamical processes (species interactions) have weakened. The new research will pursue these strong hints of an impending “tipping point” by (1) continuing the projects that led to the insights of increasing instability, (2) adding new projects that will pinpoint ecological changes, and (3) expanding the region of work to include locations in California. Research will assess whether or not sea stars recover from wasting disease, experimentally test if species interactions are indeed weakening, quantify the annual inputs of new prey and changes in abundance, diversity, stability, and resilience of intertidal communities, and document changes in the physical environment. Using field observations and experiments, the research will provide insight into impacts of environmental change, particularly warming, on the future of coastal ecosystems, and more generally, into possible future states of Earth’s ecosystems. Using these data, we will test the hypothesis that direct and indirect effects of climate change are driving, or may drive these systems into new, alternative states.&lt;/p&gt;
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            http://lod.bco-dmo.org/id/dataset-parameter/992947.rdf
	Name: PhotoID
	Units: unitless
	Description: &lt;p&gt;Identifier for each photo showing SiteCode, Zone, Replicate, Treatment, and PhotoDate. E.g. BB_L_1_R_2011-06-02&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/992948.rdf
	Name: PlotID
	Units: unitless
	Description: &lt;p&gt;Identifier for each photo showing SiteCode, Zone, Replicate, Treatment.  E.g. BB_L_1_R&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/992949.rdf
	Name: Project
	Units: unitless
	Description: &lt;p&gt;PE for PreEmption Project&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/992950.rdf
	Name: State
	Units: unitless
	Description: &lt;p&gt;State experiment performed. All Oregon&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/992951.rdf
	Name: Region
	Units: unitless
	Description: &lt;p&gt;Region experiment performed. All Oregon&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/992952.rdf
	Name: Cape
	Units: unitless
	Description: &lt;p&gt;Cape experiment performed (Foulweather, Perpetua, Blanco)&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/992953.rdf
	Name: SiteCode_STARS
	Units: unitless
	Description: &lt;p&gt;Abbreviated Site Code&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/992954.rdf
	Name: Site
	Units: unitless
	Description: &lt;p&gt;Site Name&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/992955.rdf
	Name: Latitude
	Units: decimal degrees
	Description: &lt;p&gt;Latitude of Site&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/992956.rdf
	Name: Longitude
	Units: decimal degrees
	Description: &lt;p&gt;Longitude of Site&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/992957.rdf
	Name: Zone
	Units: unitless
	Description: &lt;p&gt;Zone of Plot (High, Medium, Low)&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/992958.rdf
	Name: Rep
	Units: unitless
	Description: &lt;p&gt;Replicate. Each replicate has one of each treatment and is clustered in space (1 to 5).&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/992959.rdf
	Name: Treat
	Units: unitless
	Description: &lt;p&gt;Detailed treatment of the plot (C = Control, never cleared; S = Sucession, cleared one time; R = Removal, plot cleared annually)&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/992960.rdf
	Name: RepTreat
	Units: unitless
	Description: &lt;p&gt;Combined Rep and Treat. E.g. 1_S or 3_C&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/992961.rdf
	Name: PhotoDate
	Units: unitless
	Description: &lt;p&gt;Date photo taken&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/992962.rdf
	Name: Year
	Units: unitless
	Description: &lt;p&gt;Year photo taken&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/992963.rdf
	Name: Month
	Units: unitless
	Description: &lt;p&gt;Month photo taken&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/992964.rdf
	Name: Day
	Units: unitless
	Description: &lt;p&gt;Day photo taken&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/992965.rdf
	Name: Survey
	Units: unitless
	Description: &lt;p&gt;Identifier for each survey showing SiteCode, Project, Date  E.g. BB_PreEmption_2011-06-02&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/992966.rdf
	Name: YearRemovalStart
	Units: unitless
	Description: &lt;p&gt;Year clearance started. Usually clearances are in spring and plots are monitored until the following spring&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/992967.rdf
	Name: YearRemovalEnd
	Units: unitless
	Description: &lt;p&gt;Year clearance ended. Usually clearances are in spring and plots are monitored until the following spring&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/992968.rdf
	Name: YearNumber
	Units: unitless
	Description: &lt;p&gt;Sequetion year of project. Year 1 is 2011&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/992969.rdf
	Name: YearRange
	Units: unitless
	Description: &lt;p&gt;Years spanned from spring to spring&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/992970.rdf
	Name: RemovalDate
	Units: unitless
	Description: &lt;p&gt;Date clearance started. Usually clearances are in spring and plots are monitored until the following spring&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/992971.rdf
	Name: DaysElapsed
	Units: days
	Description: &lt;p&gt;Days since clearance started for the site (even if plot wasn&amp;#039;t cleared).&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/992972.rdf
	Name: Method
	Units: unitless
	Description: &lt;p&gt;All data types are % cover&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/992973.rdf
	Name: Bare_space
	Units: percent (%)
	Description: &lt;p&gt;% cover of this species category&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/992974.rdf
	Name: Mussels
	Units: percent (%)
	Description: &lt;p&gt;% cover of this species category&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/992975.rdf
	Name: Semibalanus
	Units: percent (%)
	Description: &lt;p&gt;% cover of this species category&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/992976.rdf
	Name: Balanus_glandula
	Units: percent (%)
	Description: &lt;p&gt;% cover of this species category&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/992977.rdf
	Name: Chthamalus
	Units: percent (%)
	Description: &lt;p&gt;% cover of this species category&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/992978.rdf
	Name: Gooseneck_barnacles
	Units: percent (%)
	Description: &lt;p&gt;% cover of this species category&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/992979.rdf
	Name: Anemones
	Units: percent (%)
	Description: &lt;p&gt;% cover of this species category&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/992980.rdf
	Name: Worms
	Units: percent (%)
	Description: &lt;p&gt;% cover of this species category&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/992981.rdf
	Name: Colonial_sessile_inverts
	Units: percent (%)
	Description: &lt;p&gt;% cover of this species category&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/992982.rdf
	Name: Coralline_crusts
	Units: percent (%)
	Description: &lt;p&gt;% cover of this species category&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/992983.rdf
	Name: Algal_crusts
	Units: percent (%)
	Description: &lt;p&gt;% cover of this species category&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/992984.rdf
	Name: Articulated_corallines
	Units: percent (%)
	Description: &lt;p&gt;% cover of this species category&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/992985.rdf
	Name: Red_blades
	Units: percent (%)
	Description: &lt;p&gt;% cover of this species category&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/992986.rdf
	Name: Red_filamentous
	Units: percent (%)
	Description: &lt;p&gt;% cover of this species category&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/992987.rdf
	Name: Red_turfs
	Units: percent (%)
	Description: &lt;p&gt;% cover of this species category&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/992988.rdf
	Name: Fucoids
	Units: percent (%)
	Description: &lt;p&gt;% cover of this species category&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/992989.rdf
	Name: Kelp
	Units: percent (%)
	Description: &lt;p&gt;% cover of this species category&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/992990.rdf
	Name: Surfgrass
	Units: percent (%)
	Description: &lt;p&gt;% cover of this species category&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/992991.rdf
	Name: Ulva
	Units: percent (%)
	Description: &lt;p&gt;% cover of this species category&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/992992.rdf
	Name: Other_green_algae
	Units: percent (%)
	Description: &lt;p&gt;% cover of this species category&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/992993.rdf
	Name: Diatoms
	Units: percent (%)
	Description: &lt;p&gt;% cover of this species category&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/992994.rdf
	Name: Total_cover
	Units: percent (%)
	Description: &lt;p&gt;Summed % cover for plot. Usually equals 100 unless part of plot was not analyzed (glare, shadow, etc.)&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/992995.rdf
	Name: Comment1
	Units: unitless
	Description: &lt;p&gt;Comment 1&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/992996.rdf
	Name: Comment2
	Units: unitless
	Description: &lt;p&gt;Comment 2&lt;/p&gt; 
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                <gco:CharacterString>&amp;lt;p&amp;gt;The purpose of this experiment is to test the recovery rates of rocky intertidal communities to single or repeated disturbance and thereby measure the succession and resilience of the community, respectively. We initiated the experiment series in the low zone in 2011 by haphazardly locating, then permanently marking five pairs of 0.5 x 0.5 m low intertidal plots. In spring/early summer each year from 2011- 2024, we photographed, then cleared one plot of each pair of all macrobiota, including macrophytes and sessile invertebrates ('removal plots'). Adjacent uncleared reference plots were left intact (controls). We also added succession plots in the early 2020s that were cleared once and allowed to recover (succession plots). Removals were allowed to recover without further intrusion for 12 mo, when they were photographed and recleared for the next year's observations. &amp;amp;nbsp;Plot locations did not change. Mid and high experiments were added in the early 2020s as well to compare how recovery and resilience differed between intertidal zones.&amp;amp;nbsp;&amp;lt;/p&amp;gt;

&amp;lt;p&amp;gt;Percent cover of each species was estimated by inspecting photographs. The 0.5 x 0.5 m quadrats were subdivided into 0.1x0.1m subquadrats, each consisting of 4% cover. Abundances of each taxon were estimated by eye for each subquadrat, and totals were obtained by adding across all 25 subquadrats.&amp;amp;nbsp; We grouped species into functional groups for analysis (see Supplemental Files for taxon ids and more category information):&amp;lt;/p&amp;gt;

&amp;lt;div&amp;gt;&amp;lt;span style=&amp;quot;font-size:13px&amp;quot;&amp;gt;small barnacles = Chthamalus dalli, Balanus glandula&amp;lt;/span&amp;gt;&amp;lt;/div&amp;gt;

&amp;lt;div&amp;gt;&amp;lt;span style=&amp;quot;font-size:13px&amp;quot;&amp;gt;large barnacles = Semibalanus cariosus, Balanus nubilus&amp;lt;/span&amp;gt;&amp;lt;/div&amp;gt;

&amp;lt;div&amp;gt;&amp;lt;span style=&amp;quot;font-size:13px&amp;quot;&amp;gt;gooseneck barnacles = Pollicipes polymerus&amp;lt;/span&amp;gt;&amp;lt;/div&amp;gt;

&amp;lt;div&amp;gt;&amp;lt;span style=&amp;quot;font-size:13px&amp;quot;&amp;gt;mussels = Mytilus californianus, Mytilus trossulus&amp;lt;/span&amp;gt;&amp;lt;/div&amp;gt;

&amp;lt;div&amp;gt;&amp;lt;span style=&amp;quot;font-size:13px&amp;quot;&amp;gt;anemones = Anthopleura xanthogrammica, A. elegantissima&amp;lt;/span&amp;gt;&amp;lt;/div&amp;gt;

&amp;lt;div&amp;gt;&amp;lt;span style=&amp;quot;font-size:13px&amp;quot;&amp;gt;articulated corallines = Corallina vancouveriensis, Bossiella plumosa&amp;lt;/span&amp;gt;&amp;lt;/div&amp;gt;

&amp;lt;div&amp;gt;&amp;lt;span style=&amp;quot;font-size:13px&amp;quot;&amp;gt;red blades = Mazzaella splendens, M. flaccida, M. parksii, Pyropia/Porphyra, Gymnogongrus, Halosaccion,&amp;lt;/span&amp;gt;&amp;lt;/div&amp;gt;

&amp;lt;div&amp;gt;&amp;lt;span style=&amp;quot;font-size:13px&amp;quot;&amp;gt;filamentous reds = Polysiphonia, Microcladia, Endocladia, Odonthalia floccosa,&amp;amp;nbsp;&amp;lt;/span&amp;gt;&amp;lt;/div&amp;gt;

&amp;lt;div&amp;gt;&amp;lt;span style=&amp;quot;font-size:13px&amp;quot;&amp;gt;red turfs=&amp;amp;nbsp; Cryptopleura, Hymenena, Constantinea, Dilsea, Erythrophyllum, Neorhodomela&amp;lt;/span&amp;gt;&amp;lt;/div&amp;gt;

&amp;lt;div&amp;gt;&amp;lt;span style=&amp;quot;font-size:13px&amp;quot;&amp;gt;kelp = Hedophyllum, Alaria, Laminaria, Egregia,&amp;lt;/span&amp;gt;&amp;lt;/div&amp;gt;

&amp;lt;div&amp;gt;&amp;lt;span style=&amp;quot;font-size:13px&amp;quot;&amp;gt;ulvoids = Ulva&amp;lt;/span&amp;gt;&amp;lt;/div&amp;gt;

&amp;lt;div&amp;gt;&amp;lt;span style=&amp;quot;font-size:13px&amp;quot;&amp;gt;worms = serpulids, spirorbids, &amp;quot;worms&amp;quot; at RP form colonies, may be amphipods.&amp;lt;/span&amp;gt;&amp;lt;/div&amp;gt;

&amp;lt;div&amp;gt;&amp;lt;span style=&amp;quot;font-size:13px&amp;quot;&amp;gt;surfgrass = Phyllospadix scouleri, P. torreyi&amp;lt;/span&amp;gt;&amp;lt;/div&amp;gt;

&amp;lt;div&amp;gt;&amp;lt;span style=&amp;quot;font-size:13px&amp;quot;&amp;gt;colonial sessile inverts = Halichondria at YB, hydrozoans (?) at YB 7-14-2022L3S&amp;lt;/span&amp;gt;&amp;lt;/div&amp;gt;

&amp;lt;div&amp;gt;&amp;lt;br /&amp;gt;
Notes:
&amp;lt;div&amp;gt;&amp;lt;span style=&amp;quot;font-size:13px&amp;quot;&amp;gt;Pisaster in plots counted as bare space&amp;lt;/span&amp;gt;&amp;lt;/div&amp;gt;

&amp;lt;div&amp;gt;&amp;lt;span style=&amp;quot;font-size:13px&amp;quot;&amp;gt;Gymnogongrus counted as red blades&amp;lt;/span&amp;gt;&amp;lt;/div&amp;gt;

&amp;lt;div&amp;gt;&amp;lt;span style=&amp;quot;font-size:13px&amp;quot;&amp;gt;when mid zone PE plots started, placed S plots in winter disturbances, assumed start date was 1/1/2021&amp;lt;/span&amp;gt;&amp;lt;/div&amp;gt;

&amp;lt;div&amp;gt;&amp;lt;span style=&amp;quot;font-size:13px&amp;quot;&amp;gt;went back and separated Chth from Bal gl only in final sample date&amp;lt;/span&amp;gt;&amp;lt;/div&amp;gt;
&amp;lt;/div&amp;gt;</gco:CharacterString>
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                  <gco:CharacterString>* Sheet 1 &amp;quot;PE_PhotoPlots_Matrix_2024-04-17&amp;quot; of submitted file &amp;quot;BCODMO_PE_PhotoPlots_Matrix_2025-06-23_SAG.xlsx&amp;quot; was imported into the BCO-DMO data system for this dataset. Values &amp;quot;NA&amp;quot; imported as missing data values.   Table will appear as Data File: 990951_v1_photoplot-species.csv (along with other download format options).
* Two unnamed columns in the table named &amp;quot;Comment1&amp;quot; and &amp;quot;Comment2&amp;quot;

* Sheet 2 &amp;quot;FunctionalGroups&amp;quot; and Sheet 4 &amp;quot;Notes&amp;quot; of &amp;quot;BCODMO_PE_PhotoPlots_Matrix_2025-06-23_SAG.xlsx&amp;quot; were added directly to the Methods &amp;amp; Sampling metadata section.

* Table within BCODMO_SiteList_STARS_2023-04-11_SAG.xlsx added as supplemental file sitelist_stars.csv

Missing Data Identifiers:
* In the BCO-DMO data system missing data identifiers are displayed according to the format of data you access. For example, in csv files it will be blank (null) values. In Matlab .mat files it will be NaN values. When viewing data online at BCO-DMO, the missing value will be shown as blank (null) values.

* Column names adjusted to conform to BCO-DMO naming conventions designed to support broad re-use by a variety of research tools and scripting languages. [Only numbers, letters, and underscores.  Can not start with a number]

* Date converted to ISO 8601 format

* Table of functional group name, column in dataset, and the SciNames included in the group were added as a supplemental file (functional_group_scinames_and_ids.csv) by parsing information provided Sheet 2 &amp;quot;FunctionalGroups&amp;quot; and Sheet 4 &amp;quot;Notes&amp;quot; of &amp;quot;BCODMO_PE_PhotoPlots_Matrix_2025-06-23_SAG.xlsx.&amp;quot; 
Taxon ids AphiaID and LSID were added from the World Register of Marine Species (lookup was on 2026-01-26).

Notes on SciNames and matching: 

Alaria is an accepted taxon for two separate organisms. The usage in this dataset was matched to Alaria Greville, 1830 (urn:lsid:marinespecies.org:taxname:144194) that is a kelp not the Alaria that is a worm &amp;quot;Alaria esculenta (Linnaeus) Greville, 1830&amp;quot; urn:lsid:marinespecies.org:taxname:145716 (since this is in the kelp category). 

Typos in scinames corrected (from-&amp;gt;to):
Balanus nubilis 
Balanus nubilus (urn:lsid:marinespecies.org:taxname:594745)

Corallina vancourveriensis
Corallina vancouveriensis (urn:lsid:marinespecies.org:taxname:494902)</gco:CharacterString>
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