Herbivore-Alga Interaction Strength Influences Spatial Heterogeneity in a Kelp-Dominated Intertidal Community
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{"title"=>"Herbivore-alga interaction strength influences spatial heterogeneity in a kelp-dominated intertidal community", "type"=>"journal", "authors"=>[{"first_name"=>"Moisés A.", "last_name"=>"Aguilera", "scopus_author_id"=>"18036744100"}, {"first_name"=>"Nelson", "last_name"=>"Valdivia", "scopus_author_id"=>"8899247800"}, {"first_name"=>"Bernardo R.", "last_name"=>"Broitman", "scopus_author_id"=>"6508052011"}], "year"=>2015, "source"=>"PLoS ONE", "identifiers"=>{"sgr"=>"84945368132", "pmid"=>"26360294", "pui"=>"606582053", "isbn"=>"1932-6203", "scopus"=>"2-s2.0-84945368132", "doi"=>"10.1371/journal.pone.0137287", "issn"=>"19326203"}, "id"=>"e0324354-094d-35fa-b609-8bc928d32ecc", "abstract"=>"There is a general consensus that marine herbivores can affect algal species composition and abundance, but little empirical work exists on the role of herbivores as modifiers of the spatial structure of resource assemblages. Here, we test the consumption/bulldozing effects of the molluscan grazer Enoplochiton niger and its influence on the spatial structure of a low intertidal community dominated by the bull kelp Durvillaea antarctica and the kelp Lessonia spicata. Through field experiments conducted at a rocky intertidal shore in north-central Chile (~30°-32°S), the edge of the grazer and algae geographic distributions, we estimated the strength and variability of consumptive effects of the grazer on different functional group of algae. We also used data from abundance field surveys to evaluate spatial co-occurrence patterns of the study species. Exclusion-enclosure experiments showed that E. niger maintained primary space available by preventing algal colonization, even of large brown algae species. The grazing activity of E. niger also reduced spatial heterogeneity of the ephemeral algal species, increasing bare space availability and variability through time in similar ways to those observed for the collective effect with other grazers. Overall, our result suggests that E. niger can be considered an important modifier of the spatial structure of the large brown algae-dominated community. Effects of E. niger on resource variability seem to be directly related to its foraging patterns, large body size, and population densities, which are all relevant factors for management and conservation of the large brown algae community. Our study thus highlights the importance of considering functional roles and identity of generalist consumers on spatial structure of the entire landscape.", "link"=>"http://www.mendeley.com/research/herbivorealga-interaction-strength-influences-spatial-heterogeneity-kelpdominated-intertidal-communi", "reader_count"=>14, "reader_count_by_academic_status"=>{"Unspecified"=>1, "Student > Doctoral Student"=>3, "Researcher"=>2, "Student > Ph. D. Student"=>4, "Student > Bachelor"=>4}, "reader_count_by_user_role"=>{"Unspecified"=>1, "Student > Doctoral Student"=>3, "Researcher"=>2, "Student > Ph. D. Student"=>4, "Student > Bachelor"=>4}, "reader_count_by_subject_area"=>{"Unspecified"=>1, "Environmental Science"=>4, "Biochemistry, Genetics and Molecular Biology"=>1, "Agricultural and Biological Sciences"=>7, "Earth and Planetary Sciences"=>1}, "reader_count_by_subdiscipline"=>{"Earth and Planetary Sciences"=>{"Earth and Planetary Sciences"=>1}, "Agricultural and Biological Sciences"=>{"Agricultural and Biological Sciences"=>7}, "Biochemistry, Genetics and Molecular Biology"=>{"Biochemistry, Genetics and Molecular Biology"=>1}, "Unspecified"=>{"Unspecified"=>1}, "Environmental Science"=>{"Environmental Science"=>4}}, "reader_count_by_country"=>{"Australia"=>1}, "group_count"=>0}

Scopus | Further Information

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Figshare

  • {"files"=>["https://ndownloader.figshare.com/files/2258946"], "description"=>"<p>Average density (± SEM) of juvenile (small recruits from 3.0 to 25 cm frond length) and adult plants (longer than 25–30 cm) of (a) <i>Lessonia spicata</i> (b), <i>Durvillaea antarctica</i> and of the grazer (c) <i>Enoplochiton niger</i>, recorded through the study in the experimental platform (un-manipulated areas) at Punta Talca.</p>", "links"=>[], "tags"=>["algae species", "algae community", "space availability", "intertidal community", "algal colonization", "intertidal shore", "algal species composition", "abundance field surveys", "generalist consumers", "body size", "population densities", "marine herbivores", "kelp Lessonia spicata", "resource variability", "field experiments", "modifier", "foraging patterns", "bull kelp Durvillaea antarctica", "role", "algal species", "study species", "resource assemblages", "molluscan grazer Enoplochiton niger"], "article_id"=>1540219, "categories"=>["Uncategorised"], "users"=>["Moisés A. Aguilera", "Nelson Valdivia", "Bernardo R. Broitman"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0137287.g002", "stats"=>{"downloads"=>0, "page_views"=>15, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Average_density_SEM_of_juvenile_small_recruits_from_3_0_to_25_cm_frond_length_and_adult_plants_longer_than_25_30_cm_of_a_Lessonia_spicata_b_Durvillaea_antarctica_and_of_the_grazer_c_Enoplochiton_niger_recorded_through_the_study_in_the_experimental_platfo/1540219", "title"=>"Average density (± SEM) of juvenile (small recruits from 3.0 to 25 cm frond length) and adult plants (longer than 25–30 cm) of (a) <i>Lessonia spicata</i> (b), <i>Durvillaea antarctica</i> and of the grazer (c) <i>Enoplochiton niger</i>, recorded through the study in the experimental platform (un-manipulated areas) at Punta Talca.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2015-09-11 03:25:24"}
  • {"files"=>["https://ndownloader.figshare.com/files/2258958"], "description"=>"<p>Modified t-tests were performed to determine significant differences in the herbivore-alga spatial correlation. Degrees of freedom and P-values were adjusted by presence of spatial autocorrelation in the data set (Dutilleul`s correction). Significance is indicated as P < 0.05*, P < 0.01** after random permutation test (1000 permutations).</p>", "links"=>[], "tags"=>["algae species", "algae community", "space availability", "intertidal community", "algal colonization", "intertidal shore", "algal species composition", "abundance field surveys", "generalist consumers", "body size", "population densities", "marine herbivores", "kelp Lessonia spicata", "resource variability", "field experiments", "modifier", "foraging patterns", "bull kelp Durvillaea antarctica", "role", "algal species", "study species", "resource assemblages", "molluscan grazer Enoplochiton niger"], "article_id"=>1540231, "categories"=>["Uncategorised"], "users"=>["Moisés A. Aguilera", "Nelson Valdivia", "Bernardo R. Broitman"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0137287.t001", "stats"=>{"downloads"=>1, "page_views"=>8, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Summary_of_Moran_s_I_autocorrelation_at_lag_1_0_120_cm_a_of_E_niger_juvenile_and_adult_individuals_of_D_antarctica_and_L_spicata_ephemeral_and_crustose_algae_during_summer_and_winter_and_b_Pearson_spatial_correlation_r_between_densities_of_E_niger_and_al/1540231", "title"=>"Summary of Moran´s I autocorrelation at lag 1 (0–120 cm) (a) of <i>E</i>. <i>niger</i>, juvenile and adult individuals of <i>D</i>. <i>antarctica</i> and <i>L</i>. <i>spicata</i>, ephemeral and crustose algae during summer and winter and (b) Pearson spatial correlation (r) between densities of <i>E</i>. <i>niger</i> and algae functional groups recorded in the experimental platform.", "pos_in_sequence"=>0, "defined_type"=>3, "published_date"=>"2015-09-11 03:25:24"}
  • {"files"=>["https://ndownloader.figshare.com/files/2258959"], "description"=>"<div><p>There is a general consensus that marine herbivores can affect algal species composition and abundance, but little empirical work exists on the role of herbivores as modifiers of the spatial structure of resource assemblages. Here, we test the consumption/bulldozing effects of the molluscan grazer <i>Enoplochiton niger</i> and its influence on the spatial structure of a low intertidal community dominated by the bull kelp <i>Durvillaea antarctica</i> and the kelp <i>Lessonia spicata</i>. Through field experiments conducted at a rocky intertidal shore in north-central Chile (~30°-32°S), the edge of the grazer and algae geographic distributions, we estimated the strength and variability of consumptive effects of the grazer on different functional group of algae. We also used data from abundance field surveys to evaluate spatial co-occurrence patterns of the study species. Exclusion-enclosure experiments showed that <i>E</i>. <i>niger</i> maintained primary space available by preventing algal colonization, even of large brown algae species. The grazing activity of <i>E</i>. <i>niger</i> also reduced spatial heterogeneity of the ephemeral algal species, increasing bare space availability and variability through time in similar ways to those observed for the collective effect with other grazers. Overall, our result suggests that <i>E</i>. <i>niger</i> can be considered an important modifier of the spatial structure of the large brown algae-dominated community. Effects of <i>E</i>. <i>niger</i> on resource variability seem to be directly related to its foraging patterns, large body size, and population densities, which are all relevant factors for management and conservation of the large brown algae community. Our study thus highlights the importance of considering functional roles and identity of generalist consumers on spatial structure of the entire landscape.</p></div>", "links"=>[], "tags"=>["algae species", "algae community", "space availability", "intertidal community", "algal colonization", "intertidal shore", "algal species composition", "abundance field surveys", "generalist consumers", "body size", "population densities", "marine herbivores", "kelp Lessonia spicata", "resource variability", "field experiments", "modifier", "foraging patterns", "bull kelp Durvillaea antarctica", "role", "algal species", "study species", "resource assemblages", "molluscan grazer Enoplochiton niger"], "article_id"=>1540232, "categories"=>["Uncategorised"], "users"=>["Moisés A. Aguilera", "Nelson Valdivia", "Bernardo R. Broitman"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0137287", "stats"=>{"downloads"=>0, "page_views"=>6, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Herbivore_Alga_Interaction_Strength_Influences_Spatial_Heterogeneity_in_a_Kelp_Dominated_Intertidal_Community_/1540232", "title"=>"Herbivore-Alga Interaction Strength Influences Spatial Heterogeneity in a Kelp-Dominated Intertidal Community", "pos_in_sequence"=>0, "defined_type"=>3, "published_date"=>"2015-09-11 03:25:24"}
  • {"files"=>["https://ndownloader.figshare.com/files/2258957"], "description"=>"<p>Local densities of <i>E</i>. <i>niger</i> and <i>per capita</i> effects recorded in field experiments in Punta Talca were used to calculate populational effects (see text for details).</p>", "links"=>[], "tags"=>["algae species", "algae community", "space availability", "intertidal community", "algal colonization", "intertidal shore", "algal species composition", "abundance field surveys", "generalist consumers", "body size", "population densities", "marine herbivores", "kelp Lessonia spicata", "resource variability", "field experiments", "modifier", "foraging patterns", "bull kelp Durvillaea antarctica", "role", "algal species", "study species", "resource assemblages", "molluscan grazer Enoplochiton niger"], "article_id"=>1540230, "categories"=>["Uncategorised"], "users"=>["Moisés A. Aguilera", "Nelson Valdivia", "Bernardo R. Broitman"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0137287.g006", "stats"=>{"downloads"=>0, "page_views"=>7, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Expected_population_level_effect_of_E_niger_on_spatial_variation_effect_size_of_bare_space_distribution_across_different_sites_where_the_grazer_and_algae_species_overlap_/1540230", "title"=>"Expected population-level effect of <i>E</i>. <i>niger</i> on spatial variation (effect size) of bare space distribution across different sites where the grazer and algae species overlap.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2015-09-11 03:25:24"}
  • {"files"=>["https://ndownloader.figshare.com/files/2258948"], "description"=>"<p>Monthly mean cover (±SE) of (a) bare rock; (b) ephemeral/opportunistic algae (i.e. <i>Ulva rigida</i>, <i>U</i>. <i>compressa</i>, <i>Pyropia</i> sp, <i>Hincskia</i> sp. <i>Polysiphonia</i> sp, ceramials) (c) <i>Lessonia spicata</i> and (d) crustose algae (i.e. encrusting coralline algae, <i>Hildenbrandia lecanelleri</i>) found inside experimental plots at Punta Talca.</p>", "links"=>[], "tags"=>["algae species", "algae community", "space availability", "intertidal community", "algal colonization", "intertidal shore", "algal species composition", "abundance field surveys", "generalist consumers", "body size", "population densities", "marine herbivores", "kelp Lessonia spicata", "resource variability", "field experiments", "modifier", "foraging patterns", "bull kelp Durvillaea antarctica", "role", "algal species", "study species", "resource assemblages", "molluscan grazer Enoplochiton niger"], "article_id"=>1540221, "categories"=>["Uncategorised"], "users"=>["Moisés A. Aguilera", "Nelson Valdivia", "Bernardo R. Broitman"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0137287.g003", "stats"=>{"downloads"=>2, "page_views"=>25, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Monthly_mean_cover_SE_of_a_bare_rock_b_ephemeral_opportunistic_algae_i_e_Ulva_rigida_U_compressa_Pyropia_sp_Hincskia_sp_Polysiphonia_sp_ceramials_c_Lessonia_spicata_and_d_crustose_algae_i_e_encrusting_coralline_algae_Hildenbrandia_lecanelleri_found_insid/1540221", "title"=>"Monthly mean cover (±SE) of (a) bare rock; (b) ephemeral/opportunistic algae (i.e. <i>Ulva rigida</i>, <i>U</i>. <i>compressa</i>, <i>Pyropia</i> sp, <i>Hincskia</i> sp. <i>Polysiphonia</i> sp, ceramials) (c) <i>Lessonia spicata</i> and (d) crustose algae (i.e. encrusting coralline algae, <i>Hildenbrandia lecanelleri</i>) found inside experimental plots at Punta Talca.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2015-09-11 03:25:24"}
  • {"files"=>["https://ndownloader.figshare.com/files/2258938"], "description"=>"<p><u>Sites</u>: LIMA: Limarí (30°45’S-71°42’W); PTAL: Punta Talca (30°55’S-71°40’W); POSC: Puerto Oscuro (31°25’S-71°36’W); HUEN: Huentelauquén (31°38’S-71°33’W).</p>", "links"=>[], "tags"=>["algae species", "algae community", "space availability", "intertidal community", "algal colonization", "intertidal shore", "algal species composition", "abundance field surveys", "generalist consumers", "body size", "population densities", "marine herbivores", "kelp Lessonia spicata", "resource variability", "field experiments", "modifier", "foraging patterns", "bull kelp Durvillaea antarctica", "role", "algal species", "study species", "resource assemblages", "molluscan grazer Enoplochiton niger"], "article_id"=>1540211, "categories"=>["Uncategorised"], "users"=>["Moisés A. Aguilera", "Nelson Valdivia", "Bernardo R. Broitman"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0137287.g001", "stats"=>{"downloads"=>2, "page_views"=>14, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Percentage_of_plots_where_the_grazer_E_niger_and_the_brown_algae_L_spicata_and_D_antarctica_were_recorded_at_four_sites_present_in_northern_Chile_/1540211", "title"=>"Percentage of plots where the grazer <i>E</i>. <i>niger</i> and the brown algae <i>L</i>. <i>spicata</i> and <i>D</i>. <i>antarctica</i> were recorded at four sites present in northern Chile.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2015-09-11 03:25:24"}
  • {"files"=>["https://ndownloader.figshare.com/files/2258955"], "description"=>"<p><i>Per capita</i> effects of <i>E</i>. <i>niger</i> on spatial variance of bare rock, ephemeral and crustose algae recorded at different times of the experiment 1 (see text for details). Collective effects of all herbviores present in the study sites (recorded in open areas) are also presented (crossed black diamonds). Bars are 95% confidence intervals estimated through a bootstrapping procedure.</p>", "links"=>[], "tags"=>["algae species", "algae community", "space availability", "intertidal community", "algal colonization", "intertidal shore", "algal species composition", "abundance field surveys", "generalist consumers", "body size", "population densities", "marine herbivores", "kelp Lessonia spicata", "resource variability", "field experiments", "modifier", "foraging patterns", "bull kelp Durvillaea antarctica", "role", "algal species", "study species", "resource assemblages", "molluscan grazer Enoplochiton niger"], "article_id"=>1540228, "categories"=>["Uncategorised"], "users"=>["Moisés A. Aguilera", "Nelson Valdivia", "Bernardo R. Broitman"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0137287.g005", "stats"=>{"downloads"=>0, "page_views"=>6, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Temporal_variation_of_the_interaction_between_the_grazer_E_niger_and_algae_and_bare_rock_production_recorded_in_the_field_experiments_/1540228", "title"=>"Temporal variation of the interaction between the grazer <i>E</i>. <i>niger</i> and algae and bare rock production recorded in the field experiments.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2015-09-11 03:25:24"}
  • {"files"=>["https://ndownloader.figshare.com/files/2258952"], "description"=>"<p>Average <i>per capita</i> (a and b) and population (c and d) effect of <i>Enoplochiton niger</i>, on mean (a and c) and variance (considered as ‘effect size’) (b and d) of percent cover of bare rock, and ephemeral and crustose algae at the study site in Punta Talca. Bars are 95% confidence intervals estimated through a bootstrapping procedure. Inserts in b and d correspond to <i>per capita</i> effects on mean and variance cover, respectively, of <i>E</i>. <i>niger</i> on <i>D</i>. <i>antarctica</i> plantlets fronds growth and total biomass evaluated with plantlets transplant in the field experiments 2. Hatched bars in b) correspond to the collective effect of grazers measured in control treatment on variance of algae.</p>", "links"=>[], "tags"=>["algae species", "algae community", "space availability", "intertidal community", "algal colonization", "intertidal shore", "algal species composition", "abundance field surveys", "generalist consumers", "body size", "population densities", "marine herbivores", "kelp Lessonia spicata", "resource variability", "field experiments", "modifier", "foraging patterns", "bull kelp Durvillaea antarctica", "role", "algal species", "study species", "resource assemblages", "molluscan grazer Enoplochiton niger"], "article_id"=>1540225, "categories"=>["Uncategorised"], "users"=>["Moisés A. Aguilera", "Nelson Valdivia", "Bernardo R. Broitman"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0137287.g004", "stats"=>{"downloads"=>2, "page_views"=>4, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Strength_of_the_interaction_between_the_grazer_E_niger_and_algae_measured_as_the_grazer_capacity_to_influence_the_recruitment_of_algae_and_bare_rock_production_during_early_succession_/1540225", "title"=>"Strength of the interaction between the grazer <i>E</i>. <i>niger</i> and algae measured as the grazer capacity to influence the recruitment of algae and bare rock production during early succession.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2015-09-11 03:25:24"}

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  • {"unique-ip"=>"7", "full-text"=>"5", "pdf"=>"1", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2020", "month"=>"7"}
  • {"unique-ip"=>"3", "full-text"=>"2", "pdf"=>"1", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2020", "month"=>"8"}
  • {"unique-ip"=>"5", "full-text"=>"5", "pdf"=>"1", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2020", "month"=>"9"}
  • {"unique-ip"=>"19", "full-text"=>"25", "pdf"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2020", "month"=>"10"}

Relative Metric

{"start_date"=>"2015-01-01T00:00:00Z", "end_date"=>"2015-12-31T00:00:00Z", "subject_areas"=>[]}
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