Effects of stochastic herbivory events on population maintenance of an understorey palm species (Geonoma schottiana) in riparian tropical forest
Plant populations can respond to temporal environmental heterogeneity caused by natural disturbances, such as herbivory. Palm individuals of several species are preyed upon by mammals, but the effects of such herbivory events on population dynamics remain poorly known. To evaluate the effects of env...
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| Veröffentlicht in: | Journal of tropical ecology 2010-03, Vol.26 (2), p.151-161 |
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| description | Plant populations can respond to temporal environmental heterogeneity caused by natural disturbances, such as herbivory. Palm individuals of several species are preyed upon by mammals, but the effects of such herbivory events on population dynamics remain poorly known. To evaluate the effects of environmental stochasticity on a Geonoma schottiana (Arecaceae) population, we surveyed annually 40 permanent 20 × 10-m plots in a riparian tropical forest over 5 y (2000–2004) and results were analysed using matrix models. The population growth rate (λ) was in equilibrium during the study period and only one bad year was identified (2002–2003), which had a higher mortality of juvenile individuals due to herbivory. Additionally, the bad year had a higher mortality of reproductive individuals than the other periods. The stasis matrix elements of the later life stages were the vital rates with highest elasticities. The mortality of juvenile and reproductive individuals had a negative contribution to λ in the bad year. Conversely, the growth of infant and juvenile individuals and the clonal growth of juveniles were the vital rates with highest contribution to stability maintenance of λ in the bad year in a life-table response experiment. The palm population had a high individual density, high proportion of the initial life stages, clonal growth, high fertility, abundant seed bank and high seedling recruitment. Despite these traits, if stochastic herbivory events occur frequently over a long period of time, the population will have a negative growth rate and the probability of local extinction will be very high. |
| doi_str_mv | 10.1017/S0266467409990599 |
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Palm individuals of several species are preyed upon by mammals, but the effects of such herbivory events on population dynamics remain poorly known. To evaluate the effects of environmental stochasticity on a Geonoma schottiana (Arecaceae) population, we surveyed annually 40 permanent 20 × 10-m plots in a riparian tropical forest over 5 y (2000–2004) and results were analysed using matrix models. The population growth rate (λ) was in equilibrium during the study period and only one bad year was identified (2002–2003), which had a higher mortality of juvenile individuals due to herbivory. Additionally, the bad year had a higher mortality of reproductive individuals than the other periods. The stasis matrix elements of the later life stages were the vital rates with highest elasticities. The mortality of juvenile and reproductive individuals had a negative contribution to λ in the bad year. Conversely, the growth of infant and juvenile individuals and the clonal growth of juveniles were the vital rates with highest contribution to stability maintenance of λ in the bad year in a life-table response experiment. The palm population had a high individual density, high proportion of the initial life stages, clonal growth, high fertility, abundant seed bank and high seedling recruitment. Despite these traits, if stochastic herbivory events occur frequently over a long period of time, the population will have a negative growth rate and the probability of local extinction will be very high.</description><identifier>ISSN: 0266-4674</identifier><identifier>EISSN: 1469-7831</identifier><identifier>DOI: 10.1017/S0266467409990599</identifier><identifier>CODEN: JTECEQ</identifier><language>eng</language><publisher>Cambridge, UK: Cambridge University Press</publisher><subject>Animal and plant ecology ; Animal, plant and microbial ecology ; Arecaceae ; Biological and medical sciences ; clonal growth ; Demography ; Developmental stages ; Environmental effects ; environmental stochasticity ; Fertility ; Forest ecology ; Fundamental and applied biological sciences. Psychology ; gallery forest ; Growth rate ; Herbivores ; Herbivory ; Heterogeneity ; Mortality ; natural disturbance ; Plant populations ; Plant reproduction ; Population dynamics ; Population ecology ; Population growth ; Population growth rate ; Rainforests ; Riparian ecology ; Riparian forests ; Seed banks ; Seedlings ; Species extinction ; Stochastic models ; Synecology ; Terrestrial ecosystems ; Tropical forests ; Understory ; Young animals</subject><ispartof>Journal of tropical ecology, 2010-03, Vol.26 (2), p.151-161</ispartof><rights>Copyright © Cambridge University Press 2010</rights><rights>Copyright 2010 Cambridge University Press</rights><rights>2015 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c437t-401f23f54d3d476542534b6c4e45cc415710afeb2a8bea55b9b6f25ad7451d9f3</citedby><cites>FETCH-LOGICAL-c437t-401f23f54d3d476542534b6c4e45cc415710afeb2a8bea55b9b6f25ad7451d9f3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.jstor.org/stable/pdf/27751669$$EPDF$$P50$$Gjstor$$H</linktopdf><linktohtml>$$Uhttps://www.cambridge.org/core/product/identifier/S0266467409990599/type/journal_article$$EHTML$$P50$$Gcambridge$$H</linktohtml><link.rule.ids>164,314,780,784,803,27923,27924,55627,58016,58249</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=22380264$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Sampaio, Maurício Bonesso</creatorcontrib><creatorcontrib>Scariot, Aldicir</creatorcontrib><title>Effects of stochastic herbivory events on population maintenance of an understorey palm species (Geonoma schottiana) in riparian tropical forest</title><title>Journal of tropical ecology</title><addtitle>J. Trop. Ecol</addtitle><description>Plant populations can respond to temporal environmental heterogeneity caused by natural disturbances, such as herbivory. Palm individuals of several species are preyed upon by mammals, but the effects of such herbivory events on population dynamics remain poorly known. To evaluate the effects of environmental stochasticity on a Geonoma schottiana (Arecaceae) population, we surveyed annually 40 permanent 20 × 10-m plots in a riparian tropical forest over 5 y (2000–2004) and results were analysed using matrix models. The population growth rate (λ) was in equilibrium during the study period and only one bad year was identified (2002–2003), which had a higher mortality of juvenile individuals due to herbivory. Additionally, the bad year had a higher mortality of reproductive individuals than the other periods. The stasis matrix elements of the later life stages were the vital rates with highest elasticities. The mortality of juvenile and reproductive individuals had a negative contribution to λ in the bad year. Conversely, the growth of infant and juvenile individuals and the clonal growth of juveniles were the vital rates with highest contribution to stability maintenance of λ in the bad year in a life-table response experiment. The palm population had a high individual density, high proportion of the initial life stages, clonal growth, high fertility, abundant seed bank and high seedling recruitment. Despite these traits, if stochastic herbivory events occur frequently over a long period of time, the population will have a negative growth rate and the probability of local extinction will be very high.</description><subject>Animal and plant ecology</subject><subject>Animal, plant and microbial ecology</subject><subject>Arecaceae</subject><subject>Biological and medical sciences</subject><subject>clonal growth</subject><subject>Demography</subject><subject>Developmental stages</subject><subject>Environmental effects</subject><subject>environmental stochasticity</subject><subject>Fertility</subject><subject>Forest ecology</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>gallery forest</subject><subject>Growth rate</subject><subject>Herbivores</subject><subject>Herbivory</subject><subject>Heterogeneity</subject><subject>Mortality</subject><subject>natural disturbance</subject><subject>Plant populations</subject><subject>Plant reproduction</subject><subject>Population dynamics</subject><subject>Population ecology</subject><subject>Population growth</subject><subject>Population growth rate</subject><subject>Rainforests</subject><subject>Riparian ecology</subject><subject>Riparian forests</subject><subject>Seed banks</subject><subject>Seedlings</subject><subject>Species extinction</subject><subject>Stochastic models</subject><subject>Synecology</subject><subject>Terrestrial ecosystems</subject><subject>Tropical forests</subject><subject>Understory</subject><subject>Young animals</subject><issn>0266-4674</issn><issn>1469-7831</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2010</creationdate><recordtype>article</recordtype><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><sourceid>GNUQQ</sourceid><recordid>eNp1kc2KFDEUhQtRsB19ABdCEBRdlCaVv8pSmrFHGJRB3cymuJVK7LRVSU2SHuy38JFN0c0MKK6ScL5zcn-q6jnB7wgm8v1X3AjBhGRYKYW5Ug-qFWFC1bKl5GG1WuR60R9XT1LaYYwV53RV_T631uicULAo5aC3kLLTaGti725DPCBza_wiezSHeT9CduU6gfPZePDaLEbwaO8HE0tANAc0wzihNBvtTEJvNib4MAFKehtyduDhLXIeRTdDLC-UY5idhhHZYk75afXIwpjMs9N5Vn3_eP5tfVFfftl8Wn-4rDWjMtcME9tQy9lAByYFZw2nrBeaGca1ZoRLgsGavoG2N8B5r3phGw6DZJwMytKz6vUxd47hZl8-7iaXtBlH8CbsU9cQqtqW0wK-_AvchX30pbbCCMVoCSwQOUI6hpSisd0c3QTx0BHcLQvq_llQ8bw6BUMq_dtYxunSnbFpaFs8rHAvjtxume-9LiUnQiw59VF3KZtfdzrEn52QVPJObK66qwt5zT6319268PRUK0x9dMMPc9_R_6v9A-7ousw</recordid><startdate>20100301</startdate><enddate>20100301</enddate><creator>Sampaio, Maurício Bonesso</creator><creator>Scariot, Aldicir</creator><general>Cambridge University Press</general><scope>BSCLL</scope><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>3V.</scope><scope>7QG</scope><scope>7QL</scope><scope>7RV</scope><scope>7SN</scope><scope>7ST</scope><scope>7T7</scope><scope>7U9</scope><scope>7XB</scope><scope>88A</scope><scope>88I</scope><scope>8FD</scope><scope>8FE</scope><scope>8FG</scope><scope>8FH</scope><scope>8FI</scope><scope>8FJ</scope><scope>8FK</scope><scope>ABJCF</scope><scope>ABUWG</scope><scope>AEUYN</scope><scope>AFKRA</scope><scope>ATCPS</scope><scope>AZQEC</scope><scope>BBNVY</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>BHPHI</scope><scope>BKSAR</scope><scope>C1K</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>FR3</scope><scope>FYUFA</scope><scope>GHDGH</scope><scope>GNUQQ</scope><scope>H94</scope><scope>HCIFZ</scope><scope>KB0</scope><scope>L6V</scope><scope>LK8</scope><scope>M2P</scope><scope>M7N</scope><scope>M7P</scope><scope>M7S</scope><scope>NAPCQ</scope><scope>P64</scope><scope>PATMY</scope><scope>PCBAR</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PTHSS</scope><scope>PYCSY</scope><scope>Q9U</scope><scope>RC3</scope><scope>SOI</scope><scope>7U6</scope></search><sort><creationdate>20100301</creationdate><title>Effects of stochastic herbivory events on population maintenance of an understorey palm species (Geonoma schottiana) in riparian tropical forest</title><author>Sampaio, Maurício Bonesso ; Scariot, Aldicir</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c437t-401f23f54d3d476542534b6c4e45cc415710afeb2a8bea55b9b6f25ad7451d9f3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2010</creationdate><topic>Animal and plant ecology</topic><topic>Animal, plant and microbial ecology</topic><topic>Arecaceae</topic><topic>Biological and medical sciences</topic><topic>clonal growth</topic><topic>Demography</topic><topic>Developmental stages</topic><topic>Environmental effects</topic><topic>environmental stochasticity</topic><topic>Fertility</topic><topic>Forest ecology</topic><topic>Fundamental and applied biological sciences. Psychology</topic><topic>gallery forest</topic><topic>Growth rate</topic><topic>Herbivores</topic><topic>Herbivory</topic><topic>Heterogeneity</topic><topic>Mortality</topic><topic>natural disturbance</topic><topic>Plant populations</topic><topic>Plant reproduction</topic><topic>Population dynamics</topic><topic>Population ecology</topic><topic>Population growth</topic><topic>Population growth rate</topic><topic>Rainforests</topic><topic>Riparian ecology</topic><topic>Riparian forests</topic><topic>Seed banks</topic><topic>Seedlings</topic><topic>Species extinction</topic><topic>Stochastic models</topic><topic>Synecology</topic><topic>Terrestrial ecosystems</topic><topic>Tropical forests</topic><topic>Understory</topic><topic>Young animals</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Sampaio, Maurício Bonesso</creatorcontrib><creatorcontrib>Scariot, Aldicir</creatorcontrib><collection>Istex</collection><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>ProQuest Central (Corporate)</collection><collection>Animal Behavior Abstracts</collection><collection>Bacteriology Abstracts (Microbiology B)</collection><collection>Nursing & Allied Health Database</collection><collection>Ecology Abstracts</collection><collection>Environment Abstracts</collection><collection>Industrial and Applied Microbiology Abstracts (Microbiology A)</collection><collection>Virology and AIDS Abstracts</collection><collection>ProQuest Central (purchase pre-March 2016)</collection><collection>Biology Database (Alumni Edition)</collection><collection>Science Database (Alumni Edition)</collection><collection>Technology Research Database</collection><collection>ProQuest SciTech Collection</collection><collection>ProQuest Technology Collection</collection><collection>ProQuest Natural Science Collection</collection><collection>Hospital Premium Collection</collection><collection>Hospital Premium Collection (Alumni Edition)</collection><collection>ProQuest Central (Alumni) (purchase pre-March 2016)</collection><collection>Materials Science & Engineering Collection</collection><collection>ProQuest Central (Alumni Edition)</collection><collection>ProQuest One Sustainability</collection><collection>ProQuest Central UK/Ireland</collection><collection>Agricultural & Environmental Science Collection</collection><collection>ProQuest Central Essentials</collection><collection>Biological Science Collection</collection><collection>ProQuest Central</collection><collection>Technology Collection</collection><collection>Natural Science Collection</collection><collection>Earth, Atmospheric & Aquatic Science Collection</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ProQuest One Community College</collection><collection>ProQuest Central Korea</collection><collection>Engineering Research Database</collection><collection>Health Research Premium Collection</collection><collection>Health Research Premium Collection (Alumni)</collection><collection>ProQuest Central Student</collection><collection>AIDS and Cancer Research Abstracts</collection><collection>SciTech Premium Collection</collection><collection>Nursing & Allied Health Database (Alumni Edition)</collection><collection>ProQuest Engineering Collection</collection><collection>ProQuest Biological Science Collection</collection><collection>Science Database</collection><collection>Algology Mycology and Protozoology Abstracts (Microbiology C)</collection><collection>Biological Science Database</collection><collection>Engineering Database</collection><collection>Nursing & Allied Health Premium</collection><collection>Biotechnology and BioEngineering Abstracts</collection><collection>Environmental Science Database</collection><collection>Earth, Atmospheric & Aquatic Science Database</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>Engineering Collection</collection><collection>Environmental Science Collection</collection><collection>ProQuest Central Basic</collection><collection>Genetics Abstracts</collection><collection>Environment Abstracts</collection><collection>Sustainability Science Abstracts</collection><jtitle>Journal of tropical ecology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Sampaio, Maurício Bonesso</au><au>Scariot, Aldicir</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Effects of stochastic herbivory events on population maintenance of an understorey palm species (Geonoma schottiana) in riparian tropical forest</atitle><jtitle>Journal of tropical ecology</jtitle><addtitle>J. Trop. Ecol</addtitle><date>2010-03-01</date><risdate>2010</risdate><volume>26</volume><issue>2</issue><spage>151</spage><epage>161</epage><pages>151-161</pages><issn>0266-4674</issn><eissn>1469-7831</eissn><coden>JTECEQ</coden><abstract>Plant populations can respond to temporal environmental heterogeneity caused by natural disturbances, such as herbivory. Palm individuals of several species are preyed upon by mammals, but the effects of such herbivory events on population dynamics remain poorly known. To evaluate the effects of environmental stochasticity on a Geonoma schottiana (Arecaceae) population, we surveyed annually 40 permanent 20 × 10-m plots in a riparian tropical forest over 5 y (2000–2004) and results were analysed using matrix models. The population growth rate (λ) was in equilibrium during the study period and only one bad year was identified (2002–2003), which had a higher mortality of juvenile individuals due to herbivory. Additionally, the bad year had a higher mortality of reproductive individuals than the other periods. The stasis matrix elements of the later life stages were the vital rates with highest elasticities. The mortality of juvenile and reproductive individuals had a negative contribution to λ in the bad year. Conversely, the growth of infant and juvenile individuals and the clonal growth of juveniles were the vital rates with highest contribution to stability maintenance of λ in the bad year in a life-table response experiment. The palm population had a high individual density, high proportion of the initial life stages, clonal growth, high fertility, abundant seed bank and high seedling recruitment. Despite these traits, if stochastic herbivory events occur frequently over a long period of time, the population will have a negative growth rate and the probability of local extinction will be very high.</abstract><cop>Cambridge, UK</cop><pub>Cambridge University Press</pub><doi>10.1017/S0266467409990599</doi><tpages>11</tpages></addata></record> |
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| ispartof | Journal of tropical ecology, 2010-03, Vol.26 (2), p.151-161 |
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| subjects | Animal and plant ecology Animal, plant and microbial ecology Arecaceae Biological and medical sciences clonal growth Demography Developmental stages Environmental effects environmental stochasticity Fertility Forest ecology Fundamental and applied biological sciences. Psychology gallery forest Growth rate Herbivores Herbivory Heterogeneity Mortality natural disturbance Plant populations Plant reproduction Population dynamics Population ecology Population growth Population growth rate Rainforests Riparian ecology Riparian forests Seed banks Seedlings Species extinction Stochastic models Synecology Terrestrial ecosystems Tropical forests Understory Young animals |
| title | Effects of stochastic herbivory events on population maintenance of an understorey palm species (Geonoma schottiana) in riparian tropical forest |
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