Nautilus pompilius Life History and Demographics at the Osprey Reef Seamount, Coral Sea, Australia
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{"title"=>"Nautilus pompilius life history and demographics at the Osprey reef seamount, Coral Sea, Australia", "type"=>"journal", "authors"=>[{"first_name"=>"Andrew J.", "last_name"=>"Dunstan", "scopus_author_id"=>"36179391600"}, {"first_name"=>"Peter D.", "last_name"=>"Ward", "scopus_author_id"=>"37023648400"}, {"first_name"=>"N. Justin", "last_name"=>"Marshall", "scopus_author_id"=>"7102430789"}], "year"=>2011, "source"=>"PLoS ONE", "identifiers"=>{"issn"=>"19326203", "isbn"=>"1932-6203", "pmid"=>"21347356", "scopus"=>"2-s2.0-79951840486", "doi"=>"10.1371/journal.pone.0016312", "sgr"=>"79951840486", "pui"=>"361305737"}, "id"=>"a0eb340c-5bb2-30a5-9450-7784a440b3ff", "abstract"=>"Nautiloids are the subject of speculation as to their threatened status arising from the impacts of targeted fishing for the ornamental shell market. Life history knowledge is essential to understand the susceptibility of this group to overfishing and to the instigation of management frameworks. This study provides a comprehensive insight into the life of Nautilus in the wild. At Osprey Reef from 1998–2008, trapping for Nautilus was conducted on 354 occasions, with 2460 individuals of one species, Nautilus pompilius, captured and 247 individuals recaptured. Baited remote underwater video systems (BRUVS) were deployed on 15 occasions and six remotely operated vehicle (ROV) dives from 100–800 m were conducted to record Nautilus presence and behavior. Maturity, sex and size data were recorded, while measurements of recaptured individuals allowed estimation of growth rates to maturity, and longevity beyond maturity. We found sexual dimorphism in size at maturity (males: 131.9±SD = 2.6 mm; females: 118.9±7.5 mm shell diameter) in a population dominated by mature individuals (58%). Mean growth rates of 15 immature recaptured animals were 0.061±0.023 mm day−1 resulting in an estimate of around 15.5 years to maturation. Recaptures of mature animals after five years provide evidence of a lifespan exceeding 20 years. Juvenile Nautilus pompilius feeding behavior was recorded for the first time within the same depth range (200–610 m) as adults. Our results provide strong evidence of a K-selected life history for Nautilus from a detailed study of a ‘closed’ wild population. In conjunction with population size and density estimates established for the Osprey Reef Nautilus, this work allows calculations for sustainable catch and provides mechanisms to extrapolate these findings to other extant nautiloid populations (Nautilus and Allonautilus spp.) throughout the Indo-Pacific.", "link"=>"http://www.mendeley.com/research/nautilus-pompilius-life-history-demographics-osprey-reef-seamount-coral-sea-australia", "reader_count"=>42, "reader_count_by_academic_status"=>{"Librarian"=>1, "Student > Doctoral Student"=>4, "Researcher"=>9, "Student > Ph. D. Student"=>6, "Student > Postgraduate"=>1, "Other"=>3, "Student > Master"=>5, "Student > Bachelor"=>12, "Professor"=>1}, "reader_count_by_user_role"=>{"Librarian"=>1, "Student > Doctoral Student"=>4, "Researcher"=>9, "Student > Ph. D. Student"=>6, "Student > Postgraduate"=>1, "Other"=>3, "Student > Master"=>5, "Student > Bachelor"=>12, "Professor"=>1}, "reader_count_by_subject_area"=>{"Environmental Science"=>6, "Biochemistry, Genetics and Molecular Biology"=>1, "Materials Science"=>1, "Agricultural and Biological Sciences"=>24, "Physics and Astronomy"=>1, "Social Sciences"=>1, "Computer Science"=>1, "Earth and Planetary Sciences"=>7}, "reader_count_by_subdiscipline"=>{"Materials Science"=>{"Materials Science"=>1}, "Social Sciences"=>{"Social Sciences"=>1}, "Physics and Astronomy"=>{"Physics and Astronomy"=>1}, "Earth and Planetary Sciences"=>{"Earth and Planetary Sciences"=>7}, "Agricultural and Biological Sciences"=>{"Agricultural and Biological Sciences"=>24}, "Computer Science"=>{"Computer Science"=>1}, "Biochemistry, Genetics and Molecular Biology"=>{"Biochemistry, Genetics and Molecular Biology"=>1}, "Environmental Science"=>{"Environmental Science"=>6}}, "reader_count_by_country"=>{"Netherlands"=>1, "Mexico"=>1, "Germany"=>1}, "group_count"=>2}

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Figshare

  • {"files"=>["https://ndownloader.figshare.com/files/798724"], "description"=>"<p>Nautilus trapping was conducted at eight sites (red stars, <i>t</i> = number of samples) around Osprey Reef totalling 354 samples of which 92% were at the Entrance site. (BRUVS) deployments (black circles) were undertaken at two sites while (ROV) dives (yellow triangles) were conducted at four sites.</p>", "links"=>[], "tags"=>["sampling", "osprey", "reef", "baited", "underwater", "systems", "remotely", "operated"], "article_id"=>469089, "categories"=>["Inorganic Chemistry", "Ecology", "Biotechnology"], "users"=>["Andrew J. Dunstan", "Peter D. Ward", "N. Justin Marshall"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0016312.g001", "stats"=>{"downloads"=>1, "page_views"=>9, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Nautilus_sampling_at_Osprey_Reef_by_trapping_and_Baited_Remote_Underwater_Video_Systems_BRUVS_and_Remotely_Operated_Vehicle_ROV_camera_records_/469089", "title"=>"Nautilus sampling at Osprey Reef by trapping and Baited Remote Underwater Video Systems (BRUVS) and Remotely Operated Vehicle (ROV) camera records.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2011-02-10 02:31:29"}
  • {"files"=>["https://ndownloader.figshare.com/files/798874"], "description"=>"<p>Males were larger (light bars: mean shell diameter = 131.9±2.6 mm, apertural shell width = 67.9±5.2 mm, N = 870) than females (dark bars: mean shell diameter = 118.9±7.5 mm, apertural shell width = 61.5±4.7 mm, <i>n</i> = 86). Maturation occurred at sizes varying±11% of the mean maximum shell diameter.</p>", "links"=>[], "tags"=>["dimorphism", "mature"], "article_id"=>469250, "categories"=>["Inorganic Chemistry", "Ecology", "Biotechnology"], "users"=>["Andrew J. Dunstan", "Peter D. Ward", "N. Justin Marshall"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0016312.g003", "stats"=>{"downloads"=>1, "page_views"=>6, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Sexual_dimorphism_in_mature_male_and_female_Nautilus_pompilius_/469250", "title"=>"Sexual dimorphism in mature male and female <i>Nautilus pompilius</i>.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2011-02-10 02:34:10"}
  • {"files"=>["https://ndownloader.figshare.com/files/798975"], "description"=>"<p>A: Juvenile <i>N. pompilius</i> about 70 mm shell length filmedfrom the ROV actively foraging at 608.1 m at North Horn, Osprey Reef. B: <i>Nautilus</i> # 716 with shell length of 89.5 mm captured by trap from 330 m. Note the cessation of color banding lines at the apertural margin and the start of this area becoming a fully white region, indicative of final juvenile stage.</p>", "links"=>[], "tags"=>["public health and epidemiology", "marine and aquatic sciences", "ecology"], "article_id"=>469349, "categories"=>["Inorganic Chemistry", "Ecology", "Biotechnology"], "users"=>["Andrew J. Dunstan", "Peter D. Ward", "N. Justin Marshall"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0016312.g005", "stats"=>{"downloads"=>1, "page_views"=>3, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Juvenile_Nautilus_pompilius_/469349", "title"=>"Juvenile <i>Nautilus pompilius</i>.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2011-02-10 02:35:49"}
  • {"files"=>["https://ndownloader.figshare.com/files/799136"], "description"=>"<p>Maximum time between capture and recapture of an already mature animal with no recorded growth was 5.3 years with a mean recapture period of 48 weeks.</p>", "links"=>[], "tags"=>["longevity"], "article_id"=>469511, "categories"=>["Inorganic Chemistry", "Ecology", "Biotechnology"], "users"=>["Andrew J. Dunstan", "Peter D. Ward", "N. Justin Marshall"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0016312.g008", "stats"=>{"downloads"=>0, "page_views"=>3, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Mature_Nautilus_pompilius_longevity_after_first_capture_/469511", "title"=>"Mature <i>Nautilus pompilius</i> longevity after first capture.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2011-02-10 02:38:31"}
  • {"files"=>["https://ndownloader.figshare.com/files/799333"], "description"=>"<p>Trapping data for all 354 trap samples shows a majority of mature individuals (58%). The large traps used in conjunction with ‘piggy-backed’ small mesh traps show a similar ratio of mature to immature individuals, while the small mesh trap caught only prawns and amphipods.</p>", "links"=>[], "tags"=>["immature", "juvenile"], "article_id"=>469707, "categories"=>["Inorganic Chemistry", "Ecology", "Biotechnology"], "users"=>["Andrew J. Dunstan", "Peter D. Ward", "N. Justin Marshall"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0016312.t001", "stats"=>{"downloads"=>1, "page_views"=>5, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Mature_immature_and_juvenile_capture_ratios_/469707", "title"=>"Mature, immature and juvenile capture ratios.", "pos_in_sequence"=>0, "defined_type"=>3, "published_date"=>"2011-02-10 02:41:47"}
  • {"files"=>["https://ndownloader.figshare.com/files/799308"], "description"=>"<p>ROV sightings of Nautilus during daylight hours in relation to search time at depth are shown. Sightings were only recorded deeper than 489 m, with most between 500–650 m, including juveniles sighted between 490 and 608 m.</p>", "links"=>[], "tags"=>["sightings", "osprey"], "article_id"=>469679, "categories"=>["Inorganic Chemistry", "Ecology", "Biotechnology"], "users"=>["Andrew J. Dunstan", "Peter D. Ward", "N. Justin Marshall"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0016312.t002", "stats"=>{"downloads"=>0, "page_views"=>4, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_ROV_Nautilus_sightings_at_Osprey_Reef_/469679", "title"=>"ROV <i>Nautilus</i> sightings at Osprey Reef.", "pos_in_sequence"=>0, "defined_type"=>3, "published_date"=>"2011-02-10 02:41:19"}
  • {"files"=>["https://ndownloader.figshare.com/files/798919"], "description"=>"<p>The influence of depth on capture rates was analyzed for 271 trapping events spread throughout all months of the year. The most effective capture depths were around 300 to 350 m, while no captures were recorded from 18 trapping efforts at depths <150 m. Error bars (±1 standard error of the mean) are shown.</p>", "links"=>[], "tags"=>["rates"], "article_id"=>469296, "categories"=>["Inorganic Chemistry", "Ecology", "Biotechnology"], "users"=>["Andrew J. Dunstan", "Peter D. Ward", "N. Justin Marshall"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0016312.g004", "stats"=>{"downloads"=>1, "page_views"=>3, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Comparison_of_Nautilus_capture_rates_with_trapping_depth_/469296", "title"=>"Comparison of <i>Nautilus</i> capture rates with trapping depth.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2011-02-10 02:34:56"}
  • {"files"=>["https://ndownloader.figshare.com/files/799280"], "description"=>"<p>Size and growth data for ten male and five female recaptured <i>Nautiluses</i> which were immature at both first capture and recapture times. The mean circumferential (circ.) growth rate of 0.0614±0.023 mm day<sup>−1</sup>; range = 0.018 to 0.111 mm day<sup>−1</sup>) provides an age estimate of 20+ years.</p>", "links"=>[], "tags"=>["public health and epidemiology", "marine and aquatic sciences", "ecology"], "article_id"=>469652, "categories"=>["Inorganic Chemistry", "Ecology", "Biotechnology"], "users"=>["Andrew J. Dunstan", "Peter D. Ward", "N. Justin Marshall"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0016312.t003", "stats"=>{"downloads"=>0, "page_views"=>3, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Recaptured_Nautilus_measurements_growth_rate_and_age_estimates_/469652", "title"=>"Recaptured <i>Nautilus</i> measurements, growth rate and age estimates.", "pos_in_sequence"=>0, "defined_type"=>3, "published_date"=>"2011-02-10 02:40:52"}
  • {"files"=>["https://ndownloader.figshare.com/files/798832"], "description"=>"<p>Size frequency records for 2067 individuals range from 76 to 145 mm with a mean of 128.6±28.01 mm. Mature male and female mean shell lengths are shown.</p>", "links"=>[], "tags"=>["osprey"], "article_id"=>469203, "categories"=>["Inorganic Chemistry", "Ecology", "Biotechnology"], "users"=>["Andrew J. Dunstan", "Peter D. Ward", "N. Justin Marshall"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0016312.g002", "stats"=>{"downloads"=>0, "page_views"=>13, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Size_frequency_distribution_for_Nautilus_pompilius_at_Osprey_Reef_/469203", "title"=>"Size frequency distribution for <i>Nautilus pompilius</i> at Osprey Reef.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2011-02-10 02:33:23"}
  • {"files"=>["https://ndownloader.figshare.com/files/799180"], "description"=>"<p>Initial capture image overlaid on recapture image of <i>Nautilus</i> #274 showing 2 ½ years of circumferential growth at a rate of 0.61 mm / day. The shock-line of initial capture can be seen on the recapture image and provides an easy method to check growth measurements.</p>", "links"=>[], "tags"=>["circumference", "diameter"], "article_id"=>469556, "categories"=>["Inorganic Chemistry", "Ecology", "Biotechnology"], "users"=>["Andrew J. Dunstan", "Peter D. Ward", "N. Justin Marshall"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0016312.g009", "stats"=>{"downloads"=>1, "page_views"=>7, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Growth_in_shell_circumference_and_diameter_of_Nautilus_pompilius_/469556", "title"=>"Growth in shell circumference and diameter of <i>Nautilus pompilius</i>.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2011-02-10 02:39:16"}
  • {"files"=>["https://ndownloader.figshare.com/files/799054"], "description"=>"<p><i>Nautilus</i> which were immature at both first capture and recapture (diamond symbol, n = 15) were used to calculate growth rate. A linear regression showed a growth rate of 0.068 mm/day while mean growth rate = 0.0614±0.023 mm day<sup>−1</sup>). Individuals which were immature at first capture but matured during the time before recapture (circle symbol, n = 23) showed varied growth rates, all <0.0614 mm day<sup>−1</sup>.</p>", "links"=>[], "tags"=>["rates", "osprey"], "article_id"=>469431, "categories"=>["Inorganic Chemistry", "Ecology", "Biotechnology"], "users"=>["Andrew J. Dunstan", "Peter D. Ward", "N. Justin Marshall"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0016312.g006", "stats"=>{"downloads"=>1, "page_views"=>8, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Circumferential_growth_rates_of_Nautilus_pompilius_at_Osprey_Reef_/469431", "title"=>"Circumferential growth rates of <i>Nautilus pompilius</i> at Osprey Reef.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2011-02-10 02:37:11"}
  • {"files"=>["https://ndownloader.figshare.com/files/399608", "https://ndownloader.figshare.com/files/399630", "https://ndownloader.figshare.com/files/399661", "https://ndownloader.figshare.com/files/399683", "https://ndownloader.figshare.com/files/399704", "https://ndownloader.figshare.com/files/399731"], "description"=>"<div><p>Nautiloids are the subject of speculation as to their threatened status arising from the impacts of targeted fishing for the ornamental shell market. Life history knowledge is essential to understand the susceptibility of this group to overfishing and to the instigation of management frameworks. This study provides a comprehensive insight into the life of <em>Nautilus</em> in the wild. At Osprey Reef from 1998–2008, trapping for <em>Nautilus</em> was conducted on 354 occasions, with 2460 individuals of one species, <em>Nautilus pompilius</em>, captured and 247 individuals recaptured. Baited remote underwater video systems (BRUVS) were deployed on 15 occasions and six remotely operated vehicle (ROV) dives from 100–800 m were conducted to record <em>Nautilus</em> presence and behavior. Maturity, sex and size data were recorded, while measurements of recaptured individuals allowed estimation of growth rates to maturity, and longevity beyond maturity. We found sexual dimorphism in size at maturity (males: 131.9±SD = 2.6 mm; females: 118.9±7.5 mm shell diameter) in a population dominated by mature individuals (58%). Mean growth rates of 15 immature recaptured animals were 0.061±0.023 mm day<sup>−1</sup> resulting in an estimate of around 15.5 years to maturation. Recaptures of mature animals after five years provide evidence of a lifespan exceeding 20 years. Juvenile <em>Nautilus pompilius</em> feeding behavior was recorded for the first time within the same depth range (200–610 m) as adults. Our results provide strong evidence of a <em>K</em>-selected life history for <em>Nautilus</em> from a detailed study of a ‘closed’ wild population. In conjunction with population size and density estimates established for the Osprey Reef <em>Nautilus</em>, this work allows calculations for sustainable catch and provides mechanisms to extrapolate these findings to other extant nautiloid populations (<em>Nautilus</em> and <em>Allonautilus</em> spp.) throughout the Indo-Pacific.</p> </div>", "links"=>[], "tags"=>["demographics", "osprey", "reef", "coral", "australia"], "article_id"=>138936, "categories"=>["Inorganic Chemistry", "Ecology", "Biotechnology"], "users"=>["Andrew J. Dunstan", "Peter D. Ward", "N. Justin Marshall"], "doi"=>["https://dx.doi.org/10.1371/journal.pone.0016312.s001", "https://dx.doi.org/10.1371/journal.pone.0016312.s002", "https://dx.doi.org/10.1371/journal.pone.0016312.s003", "https://dx.doi.org/10.1371/journal.pone.0016312.s004", "https://dx.doi.org/10.1371/journal.pone.0016312.s005", "https://dx.doi.org/10.1371/journal.pone.0016312.s006"], "stats"=>{"downloads"=>28, "page_views"=>29, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Nautilus_pompilius_Life_History_and_Demographics_at_the_Osprey_Reef_Seamount_Coral_Sea_Australia/138936", "title"=>"<em>Nautilus pompilius</em> Life History and Demographics at the Osprey Reef Seamount, Coral Sea, Australia", "pos_in_sequence"=>0, "defined_type"=>4, "published_date"=>"2011-02-10 02:28:56"}
  • {"files"=>["https://ndownloader.figshare.com/files/799248"], "description"=>"<p>Past <i>Nautilus</i> studies where mature shell length was measured and includes data for septa number, growth rate and stage of maturity where determined are summarized. The type of study is indicated by: F = field, R = radiometric/geochemical, A = aquarium.</p>", "links"=>[], "tags"=>["septa"], "article_id"=>469625, "categories"=>["Inorganic Chemistry", "Ecology", "Biotechnology"], "users"=>["Andrew J. Dunstan", "Peter D. Ward", "N. Justin Marshall"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0016312.t004", "stats"=>{"downloads"=>0, "page_views"=>7, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Nautilus_size_septa_number_and_growth_rate_comparisons_/469625", "title"=>"<i>Nautilus</i> size, septa number and growth rate comparisons.", "pos_in_sequence"=>0, "defined_type"=>3, "published_date"=>"2011-02-10 02:40:25"}
  • {"files"=>["https://ndownloader.figshare.com/files/799094"], "description"=>"<p>The relative annual growth rate of each individual immature <i>Nautilus</i> when compared with shell length at time of first capture is indicative (R<sup>2</sup> = 0.3308) of growth rates decreasing as maturity is approached.</p>", "links"=>[], "tags"=>["rates", "compared"], "article_id"=>469468, "categories"=>["Inorganic Chemistry", "Ecology", "Biotechnology"], "users"=>["Andrew J. Dunstan", "Peter D. Ward", "N. Justin Marshall"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0016312.g007", "stats"=>{"downloads"=>0, "page_views"=>3, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Relative_annual_growth_rates_compared_to_shell_length_at_first_capture_/469468", "title"=>"Relative annual growth rates compared to shell length at first capture.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2011-02-10 02:37:48"}

PMC Usage Stats | Further Information

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  • {"unique-ip"=>"14", "full-text"=>"14", "pdf"=>"2", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"1", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2016", "month"=>"1"}
  • {"unique-ip"=>"17", "full-text"=>"17", "pdf"=>"1", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"6", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2016", "month"=>"3"}
  • {"unique-ip"=>"8", "full-text"=>"10", "pdf"=>"0", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"1", "supp-data"=>"1", "cited-by"=>"0", "year"=>"2016", "month"=>"4"}
  • {"unique-ip"=>"8", "full-text"=>"9", "pdf"=>"0", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2016", "month"=>"5"}
  • {"unique-ip"=>"9", "full-text"=>"7", "pdf"=>"0", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"2", "supp-data"=>"1", "cited-by"=>"0", "year"=>"2016", "month"=>"6"}
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  • {"unique-ip"=>"11", "full-text"=>"10", "pdf"=>"1", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2016", "month"=>"8"}
  • {"unique-ip"=>"15", "full-text"=>"12", "pdf"=>"1", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"4", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2016", "month"=>"9"}
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  • {"unique-ip"=>"28", "full-text"=>"23", "pdf"=>"9", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2018", "month"=>"3"}
  • {"unique-ip"=>"16", "full-text"=>"21", "pdf"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2019", "month"=>"1"}
  • {"unique-ip"=>"34", "full-text"=>"26", "pdf"=>"14", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"1", "supp-data"=>"1", "cited-by"=>"0", "year"=>"2018", "month"=>"4"}
  • {"unique-ip"=>"24", "full-text"=>"24", "pdf"=>"4", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2018", "month"=>"5"}
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  • {"unique-ip"=>"9", "full-text"=>"7", "pdf"=>"1", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"2", "cited-by"=>"0", "year"=>"2018", "month"=>"7"}
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Relative Metric

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