Differential Responses of Calcifying and Non-Calcifying Epibionts of a Brown Macroalga to Present-Day and Future Upwelling pCO2
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{"title"=>"Differential Responses of Calcifying and Non-Calcifying Epibionts of a Brown Macroalga to Present-Day and Future Upwelling pCO2", "type"=>"journal", "authors"=>[{"first_name"=>"Vincent", "last_name"=>"Saderne", "scopus_author_id"=>"55658203900"}, {"first_name"=>"Martin", "last_name"=>"Wahl", "scopus_author_id"=>"35265364400"}], "year"=>2013, "source"=>"PLoS ONE", "identifiers"=>{"issn"=>"19326203", "scopus"=>"2-s2.0-84880719245", "pui"=>"369423965", "doi"=>"10.1371/journal.pone.0070455", "isbn"=>"1932-6203", "sgr"=>"84880719245", "pmid"=>"23894659"}, "id"=>"4314e605-8f30-3f89-b688-d27304fa67a2", "abstract"=>"Seaweeds are key species of the Baltic Sea benthic ecosystems. They are the substratum of numerous fouling epibionts like bryozoans and tubeworms. Several of these epibionts bear calcified structures and could be impacted by the high pCO2 events of the late summer upwellings in the Baltic nearshores. Those events are expected to increase in strength and duration with global change and ocean acidification. If calcifying epibionts are impacted by transient acidification as driven by upwelling events, their increasing prevalence could cause a shift of the fouling communities toward fleshy species. The aim of the present study was to test the sensitivity of selected seaweed macrofoulers to transient elevation of pCO2 in their natural microenvironment, i.e. the boundary layer covering the thallus surface of brown seaweeds. Fragments of the macroalga Fucus serratus bearing an epibiotic community composed of the calcifiers Spirorbis spirorbis (Annelida) and Electra pilosa (Bryozoa) and the non-calcifier Alcyonidium hirsutum (Bryozoa) were maintained for 30 days under three pCO2 conditions: natural 460 ± 59 µatm, present-day upwelling1193 ± 166 µatm and future upwelling 3150 ± 446 µatm. Only the highest pCO2 caused a significant reduction of growth rates and settlement of S. spirorbis individuals. Additionally, S. spirorbis settled juveniles exhibited enhanced calcification of 40% during daylight hours compared to dark hours, possibly reflecting a day-night alternation of an acidification-modulating effect by algal photosynthesis as opposed to an acidification-enhancing effect of algal respiration. E. pilosa colonies showed significantly increased growth rates at intermediate pCO2 (1193 µatm) but no response to higher pCO2. No effect of acidification on A. hirsutum colonies growth rates was observed. The results suggest a remarkable resistance of the algal macro-epibionts to levels of acidification occurring at present day upwellings in the Baltic. Only extreme future upwelling conditions impacted the tubeworm S. spirorbis, but not the bryozoans.", "link"=>"http://www.mendeley.com/research/differential-responses-calcifying-noncalcifying-epibionts-brown-macroalga-presentday-future-upwellin", "reader_count"=>68, "reader_count_by_academic_status"=>{"Unspecified"=>5, "Professor > Associate Professor"=>1, "Researcher"=>18, "Student > Doctoral Student"=>3, "Student > Ph. D. Student"=>22, "Student > Postgraduate"=>2, "Student > Master"=>8, "Other"=>4, "Student > Bachelor"=>4, "Professor"=>1}, "reader_count_by_user_role"=>{"Unspecified"=>5, "Professor > Associate Professor"=>1, "Researcher"=>18, "Student > Doctoral Student"=>3, "Student > Ph. D. Student"=>22, "Student > Postgraduate"=>2, "Student > Master"=>8, "Other"=>4, "Student > Bachelor"=>4, "Professor"=>1}, "reader_count_by_subject_area"=>{"Unspecified"=>6, "Environmental Science"=>21, "Biochemistry, Genetics and Molecular Biology"=>1, "Agricultural and Biological Sciences"=>33, "Psychology"=>1, "Earth and Planetary Sciences"=>6}, "reader_count_by_subdiscipline"=>{"Psychology"=>{"Psychology"=>1}, "Earth and Planetary Sciences"=>{"Earth and Planetary Sciences"=>6}, "Agricultural and Biological Sciences"=>{"Agricultural and Biological Sciences"=>33}, "Biochemistry, Genetics and Molecular Biology"=>{"Biochemistry, Genetics and Molecular Biology"=>1}, "Unspecified"=>{"Unspecified"=>6}, "Environmental Science"=>{"Environmental Science"=>21}}, "reader_count_by_country"=>{"Belgium"=>2, "United States"=>1, "Norway"=>1, "Mexico"=>1, "Italy"=>1, "Germany"=>2}, "group_count"=>4}

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Figshare

  • {"files"=>["https://ndownloader.figshare.com/files/1127211"], "description"=>"<p>(<b>A</b>) Schematic representation of the incubation system. (<b>B</b>) Schematic representation of one experimental <i>F. serratus</i> section bearing the three epibionts, both sides of the thallus were bearing epibionts.</p>", "links"=>[], "tags"=>["ecology", "Ecological environments", "Aquatic environments", "Marine environments", "Marine ecology", "Marine biology", "marine and aquatic sciences"], "article_id"=>752132, "categories"=>["Biological Sciences", "Earth and Environmental Sciences"], "users"=>["Vincent Saderne", "Martin Wahl"], "doi"=>["https://dx.doi.org/10.1371/journal.pone.0070455.g001"], "stats"=>{"downloads"=>0, "page_views"=>0, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Experimental_design_/752132", "title"=>"Experimental design.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2013-07-23 02:54:12"}
  • {"files"=>["https://ndownloader.figshare.com/files/1127213"], "description"=>"<p>(<b>A, C</b>) Adult <i>S. spirorbis</i> tubes after 30 days of incubation at 460 µatm and 3150 µatm pCO<sub>2</sub> respectively. (<b>B, D</b>) Juveniles <i>S. spirorbis</i> tubes after 30 days of incubation at 460 µatm and 3150 µatm pCO<sub>2</sub>. Note the conspicuous dissolution of the shell in (<b>C</b>) and the disappearance of part of the tube in (<b>D</b>). All photos were taken under epifluorescence microscope, yellow/green: calcein staining. The white lines show the considered distances for the growth measurements of <i>S. spirorbis</i> tubes.</p>", "links"=>[], "tags"=>["ecology", "Ecological environments", "Aquatic environments", "Marine environments", "Marine ecology", "Marine biology", "marine and aquatic sciences"], "article_id"=>752134, "categories"=>["Biological Sciences", "Earth and Environmental Sciences"], "users"=>["Vincent Saderne", "Martin Wahl"], "doi"=>["https://dx.doi.org/10.1371/journal.pone.0070455.g002"], "stats"=>{"downloads"=>0, "page_views"=>0, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Illustrative_examples_/752134", "title"=>"Illustrative examples.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2013-07-23 02:54:12"}
  • {"files"=>["https://ndownloader.figshare.com/files/1127214"], "description"=>"<p>(<b>A</b>) Growth of the tubes of <i>S. spirorbis</i> during the 30 days of incubations at 460 µatm, 1200 µatm and 3150 µatm pCO<sub>2</sub>, data are the mean ± SE of newly formed tubes sections in mm per worm per flask. (<b>B</b>) Settlement of <i>S. spirorbis</i> during the 30 days of incubations at 460 µatm, 1200 µatm and 3150 µatm pCO<sub>2</sub>, data are the mean ± SE of the number of juveniles settled per adult between flasks. One-way ANOVAs, n = 10, statistical significance: ***: p≤0.001, **: p≤0.01, *: p≤0.05, •: p<0.1.</p>", "links"=>[], "tags"=>["ecology", "Ecological environments", "Aquatic environments", "Marine environments", "Marine ecology", "Marine biology", "marine and aquatic sciences", "reproduction"], "article_id"=>752135, "categories"=>["Biological Sciences", "Earth and Environmental Sciences"], "users"=>["Vincent Saderne", "Martin Wahl"], "doi"=>["https://dx.doi.org/10.1371/journal.pone.0070455.g003"], "stats"=>{"downloads"=>0, "page_views"=>0, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Growth_and_reproduction_of_S_spirorbis_/752135", "title"=>"Growth and reproduction of <i>S. spirorbis</i>.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2013-07-23 02:54:12"}
  • {"files"=>["https://ndownloader.figshare.com/files/1127215"], "description"=>"<p>Growth in µm of the tubes of the juveniles of <i>S. spirorbis</i> during 24 h in light and dark condition exposed to pCO<sub>2</sub> of 460 µatm, 1200 µatm and 3150 µatm. Data are the mean ± SE newly formed tubes sections in µm per worm per flask Two-way ANOVA, n = 5, statistical significance: ***: p≤0.001.</p>", "links"=>[], "tags"=>["ecology", "Ecological environments", "Aquatic environments", "Marine environments", "Marine ecology", "Marine biology", "marine and aquatic sciences", "juveniles"], "article_id"=>752136, "categories"=>["Biological Sciences", "Earth and Environmental Sciences"], "users"=>["Vincent Saderne", "Martin Wahl"], "doi"=>["https://dx.doi.org/10.1371/journal.pone.0070455.g004"], "stats"=>{"downloads"=>0, "page_views"=>0, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Growth_of_the_juveniles_of_S_spirorbis_/752136", "title"=>"Growth of the juveniles of <i>S. spirorbis</i>.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2013-07-23 02:54:12"}
  • {"files"=>["https://ndownloader.figshare.com/files/1127216"], "description"=>"<p>Relative growth rate (RGR) of (<b>A</b>) <i>E. pilosa</i>, (<b>B</b>) <i>A. hirsutum</i> colonies during the 30 days of incubations at 460 µatm, 1200 µatm and 3150 µatm pCO<sub>2</sub>. Data are the mean ± SE of the growth rates in % in n = 10 flasks. One-way ANOVAs, statistical significance: **: p≤0.01.</p>", "links"=>[], "tags"=>["ecology", "Ecological environments", "Aquatic environments", "Marine environments", "Marine ecology", "Marine biology", "marine and aquatic sciences"], "article_id"=>752137, "categories"=>["Biological Sciences", "Earth and Environmental Sciences"], "users"=>["Vincent Saderne", "Martin Wahl"], "doi"=>["https://dx.doi.org/10.1371/journal.pone.0070455.g005"], "stats"=>{"downloads"=>0, "page_views"=>0, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Growth_of_the_bryozoan_/752137", "title"=>"Growth of the bryozoan.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2013-07-23 02:54:12"}
  • {"files"=>["https://ndownloader.figshare.com/files/1127217"], "description"=>"<p>Data derived from DIC and pH<sub>T</sub>, data are the means ± SD of three flasks sampled every three days before water exchange, along the 30 days duration of the experiment. (n = 10).</p>", "links"=>[], "tags"=>["ecology", "Ecological environments", "Aquatic environments", "Marine environments", "Marine ecology", "Marine biology", "marine and aquatic sciences", "carbonate"], "article_id"=>752138, "categories"=>["Biological Sciences", "Earth and Environmental Sciences"], "users"=>["Vincent Saderne", "Martin Wahl"], "doi"=>["https://dx.doi.org/10.1371/journal.pone.0070455.t001"], "stats"=>{"downloads"=>0, "page_views"=>0, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Seawater_carbonate_system_in_the_experimental_flasks_/752138", "title"=>"Seawater carbonate system in the experimental flasks.", "pos_in_sequence"=>0, "defined_type"=>3, "published_date"=>"2013-07-23 02:54:12"}

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Relative Metric

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