effect of predation pressure and predator adaptive foraging on the relative importance of consumptive and non‐consumptive predator net effects in a freshwater model system
An important challenge in community ecology is identifying the functional characteristics capable of predicting the nature and strength of predator effects on food webs. We developed an individual‐based model, based on a shallow lake model system, to evaluate the total, consumptive, and non‐consumpt...
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Veröffentlicht in: | Oikos 2014-06, Vol.123 (6), p.705-713 |
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description | An important challenge in community ecology is identifying the functional characteristics capable of predicting the nature and strength of predator effects on food webs. We developed an individual‐based model, based on a shallow lake model system, to evaluate the total, consumptive, and non‐consumptive indirect effect that predators have on basal resources when the predators differ in their foraging types (active adaptive foraging or sedentary foraging). Overall, both predator types caused similar total indirect effects on lower trophic levels. However, the nature net effects of predators diverged between predator foraging types. Active predators caused larger non‐consumptive effects, relative to the total indirect effect, irrespective of predation pressure levels. On the other hand, sedentary predators caused larger non‐consumptive effects for lower predation pressure levels, but consumptive effects became more important as predation pressure increased. Our simulations showed that the reliance on a particular mechanism driving consumer–resource interactions is altered by predator foraging behavior and highlight the importance of both prey and predator foraging behaviors to predict the causes and consequences of cascading effects observed in food webs. |
doi_str_mv | 10.1111/j.1600-0706.2013.01201.x |
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We developed an individual‐based model, based on a shallow lake model system, to evaluate the total, consumptive, and non‐consumptive indirect effect that predators have on basal resources when the predators differ in their foraging types (active adaptive foraging or sedentary foraging). Overall, both predator types caused similar total indirect effects on lower trophic levels. However, the nature net effects of predators diverged between predator foraging types. Active predators caused larger non‐consumptive effects, relative to the total indirect effect, irrespective of predation pressure levels. On the other hand, sedentary predators caused larger non‐consumptive effects for lower predation pressure levels, but consumptive effects became more important as predation pressure increased. 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Psychology ; General aspects ; lakes ; Predation ; predators ; Synecology</subject><ispartof>Oikos, 2014-06, Vol.123 (6), p.705-713</ispartof><rights>Copyright © 2014 Nordic Society Oikos</rights><rights>2014 The Authors</rights><rights>2015 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c4881-3958cf242da1f06bed374d9fd46c5f724d4912725928df0ecc4124f327bacf3f3</citedby><cites>FETCH-LOGICAL-c4881-3958cf242da1f06bed374d9fd46c5f724d4912725928df0ecc4124f327bacf3f3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.jstor.org/stable/pdf/24567576$$EPDF$$P50$$Gjstor$$H</linktopdf><linktohtml>$$Uhttps://www.jstor.org/stable/24567576$$EHTML$$P50$$Gjstor$$H</linktohtml><link.rule.ids>314,780,784,803,1417,27924,27925,45574,45575,58017,58250</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=28472288$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Guariento, Rafael Dettogni</creatorcontrib><creatorcontrib>Luttbeg, Barney</creatorcontrib><creatorcontrib>Mehner, Thomas</creatorcontrib><creatorcontrib>de Assis Esteves, Francisco</creatorcontrib><title>effect of predation pressure and predator adaptive foraging on the relative importance of consumptive and non‐consumptive predator net effects in a freshwater model system</title><title>Oikos</title><addtitle>Oikos</addtitle><description>An important challenge in community ecology is identifying the functional characteristics capable of predicting the nature and strength of predator effects on food webs. We developed an individual‐based model, based on a shallow lake model system, to evaluate the total, consumptive, and non‐consumptive indirect effect that predators have on basal resources when the predators differ in their foraging types (active adaptive foraging or sedentary foraging). Overall, both predator types caused similar total indirect effects on lower trophic levels. However, the nature net effects of predators diverged between predator foraging types. Active predators caused larger non‐consumptive effects, relative to the total indirect effect, irrespective of predation pressure levels. On the other hand, sedentary predators caused larger non‐consumptive effects for lower predation pressure levels, but consumptive effects became more important as predation pressure increased. Our simulations showed that the reliance on a particular mechanism driving consumer–resource interactions is altered by predator foraging behavior and highlight the importance of both prey and predator foraging behaviors to predict the causes and consequences of cascading effects observed in food webs.</description><subject>Animal and plant ecology</subject><subject>Animal, plant and microbial ecology</subject><subject>Aquatic ecosystems</subject><subject>Biological and medical sciences</subject><subject>Community ecology</subject><subject>Food chains</subject><subject>food webs</subject><subject>foraging</subject><subject>Foraging behavior</subject><subject>Fresh water ecosystems</subject><subject>freshwater</subject><subject>functional properties</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>General aspects</subject><subject>lakes</subject><subject>Predation</subject><subject>predators</subject><subject>Synecology</subject><issn>0030-1299</issn><issn>1600-0706</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2014</creationdate><recordtype>article</recordtype><recordid>eNqNUk1u1DAYjRBIDIUjICwhJDYJ_o2dBQtUQadQ6AIKS8t17GlCYqd2Qmd2HIGLcClOgtOMBsQKb2z5_fjpe84ygGCB0nrRFqiEMIcclgWGiBQQpa3Y3slWB-ButoKQwBzhqrqfPYixhRByzukq-2msNXoE3oIhmFqNjXfzKcYpGKBcvb_2AahaDWPzzQDrg9o0bgMSdbwyIJhO3QJNP_gwKqfN7Ke9i1O_SGYj592v7z_-vj1YOzOCJUgEjQMK2JTg6kaNJoDe16YDcRdH0z_M7lnVRfNovx9lF29efzpe52fnJ6fHr85yTYVAOamY0BZTXCtkYXlpasJpXdmalppZjmlNK4Q5ZhUWtYVGa4owtQTzS6UtseQoe774DsFfTyaOsm-iNl2nnPFTlIilSTKCoEjUp_9QWz8Fl9LNLCIEI4wnllhYOvgYg7FyCE2vwk4iKOceZSvnuuRcl5x7lLc9ym2SPts_oKJWnQ1pvk086LGgHGMxB3m58G6azuz-21-en76bT0n_eNG3MVXyx5-ykjNeJjxf8CY1sT3gKnyVJSecyS8fTuT6LYWfyfu1hIn_ZOFb5aXahJT54mN6iKa_J1iZxvcbxhzW_Q</recordid><startdate>201406</startdate><enddate>201406</enddate><creator>Guariento, Rafael Dettogni</creator><creator>Luttbeg, Barney</creator><creator>Mehner, Thomas</creator><creator>de Assis Esteves, Francisco</creator><general>Blackwell Publishing Ltd</general><general>Blackwell Publishing</general><general>Blackwell</general><scope>FBQ</scope><scope>BSCLL</scope><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7QG</scope><scope>7SN</scope><scope>7SS</scope><scope>8FD</scope><scope>C1K</scope><scope>F1W</scope><scope>FR3</scope><scope>H95</scope><scope>L.G</scope><scope>M7N</scope><scope>P64</scope><scope>RC3</scope></search><sort><creationdate>201406</creationdate><title>effect of predation pressure and predator adaptive foraging on the relative importance of consumptive and non‐consumptive predator net effects in a freshwater model system</title><author>Guariento, Rafael Dettogni ; Luttbeg, Barney ; Mehner, Thomas ; de Assis Esteves, Francisco</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c4881-3958cf242da1f06bed374d9fd46c5f724d4912725928df0ecc4124f327bacf3f3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2014</creationdate><topic>Animal and plant ecology</topic><topic>Animal, plant and microbial ecology</topic><topic>Aquatic ecosystems</topic><topic>Biological and medical sciences</topic><topic>Community ecology</topic><topic>Food chains</topic><topic>food webs</topic><topic>foraging</topic><topic>Foraging behavior</topic><topic>Fresh water ecosystems</topic><topic>freshwater</topic><topic>functional properties</topic><topic>Fundamental and applied biological sciences. 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We developed an individual‐based model, based on a shallow lake model system, to evaluate the total, consumptive, and non‐consumptive indirect effect that predators have on basal resources when the predators differ in their foraging types (active adaptive foraging or sedentary foraging). Overall, both predator types caused similar total indirect effects on lower trophic levels. However, the nature net effects of predators diverged between predator foraging types. Active predators caused larger non‐consumptive effects, relative to the total indirect effect, irrespective of predation pressure levels. On the other hand, sedentary predators caused larger non‐consumptive effects for lower predation pressure levels, but consumptive effects became more important as predation pressure increased. Our simulations showed that the reliance on a particular mechanism driving consumer–resource interactions is altered by predator foraging behavior and highlight the importance of both prey and predator foraging behaviors to predict the causes and consequences of cascading effects observed in food webs.</abstract><cop>Oxford, UK</cop><pub>Blackwell Publishing Ltd</pub><doi>10.1111/j.1600-0706.2013.01201.x</doi><tpages>9</tpages></addata></record> |
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subjects | Animal and plant ecology Animal, plant and microbial ecology Aquatic ecosystems Biological and medical sciences Community ecology Food chains food webs foraging Foraging behavior Fresh water ecosystems freshwater functional properties Fundamental and applied biological sciences. Psychology General aspects lakes Predation predators Synecology |
title | effect of predation pressure and predator adaptive foraging on the relative importance of consumptive and non‐consumptive predator net effects in a freshwater model system |
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