Why Is Seed Production So Variable among Individuals? A Ten-Year Study with Oaks Reveals the Importance of Soil Environment
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{"title"=>"Why Is seed production so variable among individuals? A ten-year study with oaks reveals the importance of soil environment", "type"=>"journal", "authors"=>[{"first_name"=>"Ignacio M.", "last_name"=>"Pérez-Ramos", "scopus_author_id"=>"15770301800"}, {"first_name"=>"Cristina", "last_name"=>"Aponte", "scopus_author_id"=>"35106655700"}, {"first_name"=>"Luis V.", "last_name"=>"García", "scopus_author_id"=>"7402429250"}, {"first_name"=>"Carmen M.", "last_name"=>"Padilla-Díaz", "scopus_author_id"=>"56461354200"}, {"first_name"=>"Teodoro", "last_name"=>"Marañón", "scopus_author_id"=>"6603676695"}, {"first_name"=>"Sylvain", "last_name"=>"Delzon", "scopus_author_id"=>"8853844100"}], "year"=>2014, "source"=>"PLoS ONE", "identifiers"=>{"pmid"=>"25532130", "doi"=>"10.1371/journal.pone.0115371", "sgr"=>"84919820327", "isbn"=>"1932-6203", "scopus"=>"2-s2.0-84919820327", "issn"=>"19326203", "pui"=>"600996580"}, "id"=>"33be6180-94b2-3015-9afd-c0ec067cf3de", "abstract"=>"Mast-seeding species exhibit not only a large inter-annual variability in seed production but also considerable variability among individuals within the same year. However, very little is known about the causes and consequences for population dynamics of this potentially large between-individual variability. Here, we quantified seed production over ten consecutive years in two Mediterranean oak species - the deciduous Quercus canariensis and the evergreen Q. suber - that coexist in forests of southern Spain. First, we calibrated likelihood models to identify which abiotic and biotic variables best explain the magnitude (hereafter seed productivity) and temporal variation of seed production at the individual level (hereafter CVi), and infer whether reproductive effort results from the available soil resources for the plant or is primarily determined by selectively favoured strategies. Second, we explored the contribution of between-individual variability in seed production as a potential mechanism of satiation for predispersal seed predators. We found that Q. canariensis trees inhabiting moister and more fertile soils were more productive than those growing in more resource-limited sites. Regarding temporal variation, individuals of the two studied oak species inhabiting these resource-rich environments also exhibited larger values of CVi. Interestingly, we detected a satiating effect on granivorous insects at the tree level in Q. suber, which was evident in those years where between-individual variability in acorn production was higher. These findings suggest that individual seed production (both in terms of seed productivity and inter-annual variability) is strongly dependent on soil resource heterogeneity (at least for one of the two studied oak species) with potential repercussions for recruitment and population dynamics. However, other external factors (such as soil heterogeneity in pathogen abundance) or certain inherent characteristics of the tree might be also involved in this process.", "link"=>"http://www.mendeley.com/research/seed-production-so-variable-among-individuals-tenyear-study-oaks-reveals-importance-soil-environment", "reader_count"=>29, "reader_count_by_academic_status"=>{"Researcher"=>8, "Student > Doctoral Student"=>4, "Student > Ph. D. Student"=>9, "Student > Postgraduate"=>2, "Student > Master"=>5, "Other"=>1}, "reader_count_by_user_role"=>{"Researcher"=>8, "Student > Doctoral Student"=>4, "Student > Ph. D. Student"=>9, "Student > Postgraduate"=>2, "Student > Master"=>5, "Other"=>1}, "reader_count_by_subject_area"=>{"Unspecified"=>2, "Environmental Science"=>11, "Agricultural and Biological Sciences"=>16}, "reader_count_by_subdiscipline"=>{"Agricultural and Biological Sciences"=>{"Agricultural and Biological Sciences"=>16}, "Unspecified"=>{"Unspecified"=>2}, "Environmental Science"=>{"Environmental Science"=>11}}, "reader_count_by_country"=>{"Spain"=>1}, "group_count"=>1}

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Figshare

  • {"files"=>["https://ndownloader.figshare.com/files/1851783", "https://ndownloader.figshare.com/files/1851784", "https://ndownloader.figshare.com/files/1851785", "https://ndownloader.figshare.com/files/1851786"], "description"=>"<div><p>Mast-seeding species exhibit not only a large inter-annual variability in seed production but also considerable variability among individuals within the same year. However, very little is known about the causes and consequences for population dynamics of this potentially large between-individual variability. Here, we quantified seed production over ten consecutive years in two Mediterranean oak species – the deciduous <i>Quercus canariensis</i> and the evergreen <i>Q. suber</i> - that coexist in forests of southern Spain. First, we calibrated likelihood models to identify which abiotic and biotic variables best explain the magnitude (hereafter seed productivity) and temporal variation of seed production at the individual level (hereafter CV<sub>i</sub>), and infer whether reproductive effort results from the available soil resources for the plant or is primarily determined by selectively favoured strategies. Second, we explored the contribution of between-individual variability in seed production as a potential mechanism of satiation for predispersal seed predators. We found that <i>Q. canariensis</i> trees inhabiting moister and more fertile soils were more productive than those growing in more resource-limited sites. Regarding temporal variation, individuals of the two studied oak species inhabiting these resource-rich environments also exhibited larger values of CV<sub>i</sub>. Interestingly, we detected a satiating effect on granivorous insects at the tree level in <i>Q. suber,</i> which was evident in those years where between-individual variability in acorn production was higher. These findings suggest that individual seed production (both in terms of seed productivity and inter-annual variability) is strongly dependent on soil resource heterogeneity (at least for one of the two studied oak species) with potential repercussions for recruitment and population dynamics. However, other external factors (such as soil heterogeneity in pathogen abundance) or certain inherent characteristics of the tree might be also involved in this process.</p></div>", "links"=>[], "tags"=>["seed production", "seed productivity", "variability", "oak species", "Population Dynamics", "soil resource heterogeneity", "deciduous Quercus canariensis", "predispersal seed predators"], "article_id"=>1276681, "categories"=>["Biological Sciences", "Ecology"], "users"=>["Ignacio M. Pérez-Ramos", "Cristina Aponte", "Luis V. García", "Carmen M. Padilla-Díaz", "Teodoro Marañón"], "doi"=>["https://dx.doi.org/10.1371/journal.pone.0115371.s001", "https://dx.doi.org/10.1371/journal.pone.0115371.s002", "https://dx.doi.org/10.1371/journal.pone.0115371.s003", "https://dx.doi.org/10.1371/journal.pone.0115371.s004"], "stats"=>{"downloads"=>7, "page_views"=>8, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Why_Is_Seed_Production_So_Variable_among_Individuals_A_Ten_Year_Study_with_Oaks_Reveals_the_Importance_of_Soil_Environment_/1276681", "title"=>"Why Is Seed Production So Variable among Individuals? A Ten-Year Study with Oaks Reveals the Importance of Soil Environment", "pos_in_sequence"=>0, "defined_type"=>4, "published_date"=>"2014-12-22 02:42:54"}
  • {"files"=>["https://ndownloader.figshare.com/files/1851755"], "description"=>"<p>Two fractions of seed productivity have been represented: initial (including aborted and mature seeds; panel A) and mature acorns (panel B), both of them relativized by m<sup>2</sup> of tree basal area.</p>", "links"=>[], "tags"=>["seed production", "seed productivity", "variability", "oak species", "Population Dynamics", "soil resource heterogeneity", "deciduous Quercus canariensis", "predispersal seed predators"], "article_id"=>1276661, "categories"=>["Biological Sciences", "Ecology"], "users"=>["Ignacio M. Pérez-Ramos", "Cristina Aponte", "Luis V. García", "Carmen M. Padilla-Díaz", "Teodoro Marañón"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0115371.g001", "stats"=>{"downloads"=>2, "page_views"=>29, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Inter_annual_variability_in_seed_production_for_the_two_studied_oak_species_Quercus_canariensis_with_solid_lines_and_Q_suber_with_dashed_lines_for_the_entire_sampling_period_from_2002_to_2012_/1276661", "title"=>"Inter-annual variability in seed production for the two studied oak species (<i>Quercus canariensis</i> with solid lines and <i>Q. suber</i> with dashed lines) for the entire sampling period (from 2002 to 2012).", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2014-12-22 02:42:54"}
  • {"files"=>["https://ndownloader.figshare.com/files/1851773"], "description"=>"<p>Between-individual variability in seed production, expressed in terms of coefficient of variation for each of the ten sampling years (BIV<sub>ann</sub>), refers to <i>Quercus suber</i> trees. The ‘satiating’ effect has been calculated as the Pearson's coefficient of correlation between the individual productivity of mature acorns and the percentage of them infested by granivorous insects. Black symbols represent each of the ten sampling years.</p>", "links"=>[], "tags"=>["seed production", "seed productivity", "variability", "oak species", "Population Dynamics", "soil resource heterogeneity", "deciduous Quercus canariensis", "predispersal seed predators"], "article_id"=>1276674, "categories"=>["Biological Sciences", "Ecology"], "users"=>["Ignacio M. Pérez-Ramos", "Cristina Aponte", "Luis V. García", "Carmen M. Padilla-Díaz", "Teodoro Marañón"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0115371.g004", "stats"=>{"downloads"=>0, "page_views"=>10, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Relationship_between_inter_individual_variability_in_seed_production_and_the_magnitude_of_a_8216_satiating_8217_effect_at_the_tree_level_/1276674", "title"=>"Relationship between inter-individual variability in seed production and the magnitude of a ‘satiating’ effect at the tree level.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2014-12-22 02:42:54"}
  • {"files"=>["https://ndownloader.figshare.com/files/1851763"], "description"=>"<p>Values of individual-level seed productivity have been averaged for a time period of 10 years (from 2002 to 2012) and relativized by m<sup>2</sup> of tree basal area. <i>Quercus canariensis</i> has been represented with black symbols and solid lines, whereas <i>Quercus suber</i> with white symbols and dashed lines. Lines represent the best-fitted models (details in <a href=\"http://www.plosone.org/article/info:doi/10.1371/journal.pone.0115371#pone.0115371.s002\" target=\"_blank\">S1 Table</a>).</p>", "links"=>[], "tags"=>["seed production", "seed productivity", "variability", "oak species", "Population Dynamics", "soil resource heterogeneity", "deciduous Quercus canariensis", "predispersal seed predators"], "article_id"=>1276669, "categories"=>["Biological Sciences", "Ecology"], "users"=>["Ignacio M. Pérez-Ramos", "Cristina Aponte", "Luis V. García", "Carmen M. Padilla-Díaz", "Teodoro Marañón"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0115371.g002", "stats"=>{"downloads"=>0, "page_views"=>12, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Influence_of_soil_environment_soil_water_in_spring_acidity_and_nutrients_on_initial_and_mature_seed_productivity_/1276669", "title"=>"Influence of soil environment (soil water in spring, acidity and nutrients) on initial and mature seed productivity.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2014-12-22 02:42:54"}
  • {"files"=>["https://ndownloader.figshare.com/files/1851778"], "description"=>"<p>For individual synchrony, the percentage of significant relationships among individuals has been indicated within brackets. BIV<sub>long</sub> = between-individual variability in seed production using time-averaged values for the 10-year period; CV<sub>p</sub> = inter-annual variability in seed production at the population level; CV<sub>i</sub> = inter-annual variability in seed production at the individual level.</p><p>Components of individual-level variability in seed production (both for initial and mature acorns) for the two studied oak species.</p>", "links"=>[], "tags"=>["seed production", "seed productivity", "variability", "oak species", "Population Dynamics", "soil resource heterogeneity", "deciduous Quercus canariensis", "predispersal seed predators"], "article_id"=>1276676, "categories"=>["Biological Sciences", "Ecology"], "users"=>["Ignacio M. Pérez-Ramos", "Cristina Aponte", "Luis V. García", "Carmen M. Padilla-Díaz", "Teodoro Marañón"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0115371.t001", "stats"=>{"downloads"=>1, "page_views"=>18, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Components_of_individual_level_variability_in_seed_production_both_for_initial_and_mature_acorns_for_the_two_studied_oak_species_/1276676", "title"=>"Components of individual-level variability in seed production (both for initial and mature acorns) for the two studied oak species.", "pos_in_sequence"=>0, "defined_type"=>3, "published_date"=>"2014-12-22 02:42:54"}
  • {"files"=>["https://ndownloader.figshare.com/files/1851766"], "description"=>"<p>Values of individual seed production have been averaged for a time period of 10 years (from 2002 to 2012) and relativized by m<sup>2</sup> of tree basal area. <i>Quercus canariensis</i> has been represented with black symbols and solid lines, whereas <i>Quercus suber</i> with white symbols and dashed lines. Lines represent the best-fitted models (details in <a href=\"http://www.plosone.org/article/info:doi/10.1371/journal.pone.0115371#pone.0115371.s002\" target=\"_blank\">S1 Table</a>).</p>", "links"=>[], "tags"=>["seed production", "seed productivity", "variability", "oak species", "Population Dynamics", "soil resource heterogeneity", "deciduous Quercus canariensis", "predispersal seed predators"], "article_id"=>1276671, "categories"=>["Biological Sciences", "Ecology"], "users"=>["Ignacio M. Pérez-Ramos", "Cristina Aponte", "Luis V. García", "Carmen M. Padilla-Díaz", "Teodoro Marañón"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0115371.g003", "stats"=>{"downloads"=>2, "page_views"=>11, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Influence_of_soil_environment_soil_water_in_spring_acidity_and_nutrients_on_inter_annual_variability_in_seed_production_at_the_individual_level_/1276671", "title"=>"Influence of soil environment (soil water in spring, acidity and nutrients) on inter-annual variability in seed production at the individual level.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2014-12-22 02:42:54"}

PMC Usage Stats | Further Information

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Relative Metric

{"start_date"=>"2014-01-01T00:00:00Z", "end_date"=>"2014-12-31T00:00:00Z", "subject_areas"=>[{"subject_area"=>"/Biology and life sciences", "average_usage"=>[291]}, {"subject_area"=>"/Biology and life sciences/Organisms", "average_usage"=>[310]}, {"subject_area"=>"/Biology and life sciences/Plant science", "average_usage"=>[278, 438]}, {"subject_area"=>"/Ecology and environmental sciences/Soil science", "average_usage"=>[247, 381]}, {"subject_area"=>"/Ecology and environmental sciences/Terrestrial environments", "average_usage"=>[292, 445]}]}
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