nigel.stanger / Digital_Repository
Transfer to URL with SHA Find file
Newer
Older
Digital_Repository / Misc / Mass downloads / UTas / 1924.html
Nigel Stanger on 7 May 2013 41 KB - Imported Misc directory.
Raw Blame History 
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html>
  <head>
    <title>UTas ePrints - Habitat structural complexity mediates the foraging success of multiple predator species</title>
    <script type="text/javascript" src="http://eprints.utas.edu.au/javascript/auto.js"><!-- padder --></script>
    <style type="text/css" media="screen">@import url(http://eprints.utas.edu.au/style/auto.css);</style>
    <style type="text/css" media="print">@import url(http://eprints.utas.edu.au/style/print.css);</style>
    <link rel="icon" href="/images/eprints/favicon.ico" type="image/x-icon" />
    <link rel="shortcut icon" href="/images/eprints/favicon.ico" type="image/x-icon" />
    <link rel="Top" href="http://eprints.utas.edu.au/" />
    <link rel="Search" href="http://eprints.utas.edu.au/cgi/search" />
    <meta content="Warfe, Danielle M." name="eprints.creators_name" />
<meta content="Barmuta, Leon A." name="eprints.creators_name" />
<meta content=" Danielle.Warfe@dpiw.tas.gov.au" name="eprints.creators_id" />
<meta content="Leon.Barmuta@utas.edu.au" name="eprints.creators_id" />
<meta content="article" name="eprints.type" />
<meta content="2007-09-21" name="eprints.datestamp" />
<meta content="2008-01-08 15:30:00" name="eprints.lastmod" />
<meta content="show" name="eprints.metadata_visibility" />
<meta content="Habitat structural complexity mediates the foraging success of multiple predator species" name="eprints.title" />
<meta content="pub" name="eprints.ispublished" />
<meta content="270701" name="eprints.subjects" />
<meta content="270700" name="eprints.subjects" />
<meta content="270504" name="eprints.subjects" />
<meta content="restricted" name="eprints.full_text_status" />
<meta content="Macrophyte structure
Multiple predators
Non-additivity
Predator, predator interactions
Habitat complexity
Community ecology
Refuge" name="eprints.keywords" />
<meta content="The original publication is available at www.springerlink.com" name="eprints.note" />
<meta content="We investigated the role of freshwater macrophytes as refuge by testing the hypothesis that predators capture fewer prey in more dense and structurally complex habitats. We also tested the hypothesis that habitat structure not only affects the prey-capture success of a single predator in isolation, but also the effectiveness of two predators combined, particularly if it mediates interactions between the predators. We conducted a fully crossed four-factorial laboratory experiment using artificial plants to determine the separate quantitative (density) and qualitative (shape) components of macrophyte structure on the prey-capture success of a predatory damselfly, Ischnura heterosticta tasmanica, and the southern pygmy perch, Nannoperca australis. Contrary to our expectations, macrophyte density had no effect on the prey-capture success of either predator, but both predators were significantly less effective in the structurally complex Myriophyllum analogue than in the structurally simpler Triglochin and Eleocharis analogues. Furthermore, the greater structural complexity of Myriophyllum amplified the impact of the negative interaction between the predators on prey numbers; the habitat use by damselfly larvae in response to the presence of southern pygmy perch meant they captured less prey in Myriophyllum. These results demonstrate habitat structure can influence multiple predator effects, and support the mechanism of increased prey refuge in more structurally complex macrophytes." name="eprints.abstract" />
<meta content="2004-08-06" name="eprints.date" />
<meta content="published" name="eprints.date_type" />
<meta content="Oecologia" name="eprints.publication" />
<meta content="141" name="eprints.volume" />
<meta content="171-178" name="eprints.pagerange" />
<meta content="10.1007/s00442-004-1644-x" name="eprints.id_number" />
<meta content="UNSPECIFIED" name="eprints.thesis_type" />
<meta content="TRUE" name="eprints.refereed" />
<meta content="0029-8549" name="eprints.issn" />
<meta content="http://dx.doi.org/10.1007/s00442-004-1644-x" name="eprints.official_url" />
<meta content="Beck MW (2000) Separating the elements of habitat structure: independent effects of habitat complexity and structural components on rocky intertidal gastropods. J Exp Mar Biol Ecol 249:29–49
CrossRefPubMed
 
Beckerman AP, Uriarte M, Schmitz OJ (1997) Experimental evidence for a behaviour-mediated trophic cascade in a terrestrial food chain. Proc Natl Acad Sci U S A 94:10735–10738
CrossRefChemPortPubMed
 
Bettoli PW, Maceina MJ, Noble RL, Betsill RK (1992) Piscivory in largemouth bass as a function of aquatic vegetation abundance. N Am J Fish Manage 12:509–516
CrossRef
 
Carlisle DM, Hawkins CP (1998) Relationships between invertebrate assemblage structure, two trout species, and habitat structure in Utah mountain lakes. J N Am Benthol Soc 17:286–300
 
Chilton EWI (1990) Macroinvertebrate communities associated with three aquatic macrophytes (Ceratophyllum demersum, Myriophyllum spicatum,and Vallisneria americana) in Lake Onalaska, Wisconsin. J Freshwater Ecol 5:455–466
 
Coen LD, Heck KLJ, Abele LG (1981) Experiments on competition and predation among shrimps of seagrass meadows. Ecology 62:1484–1893
 
Coull BC, Wells JBJ (1983) Refuges from fish predation: experiments with phytal meiofauna from the New Zealand rocky intertidal. Ecology 64:1599–1609
 
Crowder LB, Cooper WE (1982) Habitat structural complexity and the interaction between bluegills and their prey. Ecology 63:1802–1813
 
Crowder LB, Squires DB, Rice JA (1997) Nonadditive effects of terrestrial and aquatic predators on juvenile estuarine fish. Ecology 78:1796–1804
 
Crowder LB, McCollum EW, Martin TH (1998) Changing perspectives on food web interactions in lake littoral zones. In: Jeppesen E, Sondergaard M, Sondergaard M, Christoffersen K (eds) The structuring roles of submerged macrophytes in lakes. Springer, Berlin Heidelberg New York, pp 240–249
 
Cyr H, Downing JA (1988) The abundance of phytophilous invertebrates on different species of submerged macrophytes. Freshwater Biol 20:365–374
 
Davies PE, Humphries P (1996) An environmental flow study of the Meander, Macquarie and South Esk Rivers, Tasmania. Department of Primary Industry and Fisheries
 
Dean RL, Connell JH (1987) Marine invertebrates in an algal succession. III. Mechanisms linking habitat complexity with diversity. J Exp Mar Biol Ecol 109:249–273
CrossRef
 
Dettmers JM, Wahl DH, Soluk DA, Gutreuter S (2001) Life in the fast lane: fish and foodweb structure in the main channel of large rivers. J N Am Benthol Soc 20:255–265
 
Diehl S (1988) Foraging efficiency of three freshwater fishes: effects of structural complexity and light. Oikos 53:207–214
 
Diehl S, Kornijow R (1998) Influence of submerged macrophytes on trophic interactions among fish and macroinvertebrates. In: Jeppesen E, Sondergaard M, Sondergaard M, Christoffersen K (eds) The structuring roles of submerged Macrophytes in lakes. Springer, Berlin Heidelberg New York, pp 24–46
 
Dionne M, Folt CL (1991) An experimental analysis of macrophyte growth forms as fish foraging habitat. Can J Fish Aquat Sci 48:123–131
 
Dionne M, Butler M, Folt C (1990) Plant-specific expression of anti-predator behaviour by larval damselflies. Oecologia 83:371–377
 
Edgar GJ (1983) The ecology of south-east Tasmanian phytal animal communities. I. Spatial organization on a local scale. J Exp Mar Biol Ecol 70:129–157
CrossRef
 
Folsom TC, Collins NC (1984) The diet and foraging behaviour of the larval dragonfly Anax junius (Aeshnidae), with an assessment of the role of refuges and prey activity. Oikos 42:105–113
 
Gilinsky E (1984) The role of fish predation and spatial heterogeneity in determining benthic community structure. Ecology 65:455–468
 
Gotceitas V, Colgan P (1989) Predator foraging success and habitat complexity: quantitative test of the threshold hypothesis. Oecologia 80:158–166
 
Heads PA (1985) The effect of invertebrate and vertebrate predators on the foraging movements of Ischnura elegans larvae (Odonata: Zygoptera). Freshwater Biol 15:559–571
 
Heck KLJ, Crowder LB (1991) Habitat structure and predator–prey interactions in vegetated aquatic systems. In: Bell SS, McCoy ED, Mushinsky HR (eds) Habitat structure: the physical arrangement of objects in space. Chapman and Hall, London, pp 281–299
 
Heck KLJ, Orth RJ (1980) Seagrass habitats: the roles of habitat complexity, competition and predation in structuring associated fish and motile macroinvertebrate assemblages. In: Kennedy VS (ed) Estuarine perspectives. Academic Press, London, pp 449–464
 
Heck KLJ, Thoman TA (1981) Experiments on predator–prey interactions in vegetated aquatic habitats. J Exp Mar Biol Ecol 53:125–134
CrossRef
 
Heck KLJ, Wetstone GS (1977) Habitat complexity and invertebrate species richness and abundance in tropical seagrass meadows. J Biogeogr 4:135–142
 
Humphries P (1995) Life history, food and habitat of southern pygmy perch, Nannoperca australis, in the Macquarie River, Tasmania. Mar Freshwater Res 46:1159–11
 
Humphries P (1996) Aquatic macrophytes, macroinvertebrate associations and water levels in a lowland Tasmanian river. Hydrobiologia 321:219–233
 
Humphries P, Davies PE, Mulcahy ME (1996) Macroinvertebrate assemblages of littoral habitats in the Macquarie and Mersey Rivers, Tasmania: implications for the management of regulated rivers. Regul River 12:99–122
CrossRef
 
Jacobsen L, Perrow MR, Landkildehus F, Hjorne M, Lauridsen TL, Berg S (1997) Interactions between piscivores, zooplanktivores and zooplankton in submerged macrophytes: preliminary observations from enclosure and pond experiments. Hydrobiologia 342/343:197–205
 
James PL, Heck KLJ (1994) The effects of habitat complexity and light intensity on ambush predation within a simulated seagrass habitat. J Exp Mar Biol Ecol 176:187–200
CrossRef
 
Koperski P (1997) Changes in feeding behaviour of the larvae of the damselfly Enallagma cyathigerum in response to stimuli from predators. Ecol Entomol 22:167–175
CrossRef
 
Leber KM (1985) The influence of predatory decapods, refuge, and microhabitat selection on seagrass communities. Ecology 66:1951–1964
 
Lipcius RN, Eggleston DB, Miller DL, Luhrs TC (1998) The habitat–survival function for Caribbean spiny lobster: an inverted size effect and non-linearity in mixed algal and seagrass habitats. Mar Freshwater Res 49:807–816
CrossRef
 
Losey JE, Denno RF (1988) Positive predator–predator interactions: enhanced predation rates and synergistic suppression of aphid populations. Ecology 79:2143–2152
 
Main KL (1987) Predator avoidance in seagrass meadows: prey behaviour, microhabitat selection, and cryptic coloration. Ecology 68:170–180
 
Martin TH, Wright RA, Crowder LB (1989) Non-additive impact of blue crabs and spot on their prey assemblages. Ecology 70:1935–1942
 
McCoy ED, Bell SS (1991) Habitat structure: the evolution and diversification of a complex topic. In: McCoy ED, Bell SS, Mushinsky HR (eds) Habitat structure: the physical arrangement of objects in space. Chapman and Hall, London, pp 3–27
 
McIntosh AR, Peckarsky BL (1996) Differential behavioural responses of mayflies from streams with and without fish to trout odour. Freshwater Biol 35:141–148
CrossRef
 
McPeek MA, Peckarsky BL (1998) Life histories and the strengths of species interactions: combining mortality, growth, and fecundity effects. Ecology 79:867–879
 
Morin PJ (1995) Functional redundancy, non-additive interactions, and supply-side dynamics in experimental pond communities. Ecology 76:133–149
 
Nelson WG (1979) Experimental studies of selective predation on amphipods: consequences for amphipod distribution and abundance. J Exp Mar Biol Ecol 38:225–245
CrossRef
 
Nelson WG, Bonsdorff E (1990) Fish predation and habitat complexity: are complexity thresholds real? J Exp Mar Biol Ecol 141:183–194
CrossRef
 
Orr BK, Resh VH (1991) Interactions among aquatic vegetation, predators and mosquitoes: implications for management of Anopheles mosquitoes in a freshwater marsh. Proc Calif Mosq Vector Control Assoc 58:214–220
 
Orr BK, Resh VH (1992) Influence of Myriophyllum aquaticum cover on Anopheles mosquito abundance, oviposition and larval microhabitat. Oecologia 90:474–482
 
Persson L, Eklov P (1995) Prey refuges affecting interactions between piscivorous perch and juvenile perch and roach. Ecology 76:70–81
 
Pierce CL (1988) Predator avoidance, microhabitat shift, and risk-sensitive foraging in larval dragonflies. Oecologia 77:81–90
 
Polis GA (1989) Exploitation competition and the evolution of interference, cannabalism, and intraguild predation in age/size structured populations. In: Ebenman B, Persson L (eds) Size-structured populations. Springer, Berlin Heidelberg New York, pp 185–202
 
Power ME (1992) Habitat heterogeneity and the functional significance of fish in river food webs. Ecology 73:1675–1688
 
Rooke B (1986) Macroinvertebrates associated with macrophytes and plastic imitations in the Eramosa River, Ontario, Canada. Arch Hydrobiol 106:307–325
 
Ryer C (1988) Pipefish foraging: effects of fish size, prey size and altered habitat complexity. Mar Ecol Prog Ser 48:37–45
 
Savino JF, Stein RA (1982) Predator–prey interaction between largemouth bass and bluegills as influenced by simulated, submersed vegetation. Trans Am Fish Soc 111:255–266
CrossRef
 
Savino JF, Stein RA (1989) Behavioural interactions between fish predators and their prey: effects of plant density. Anim Behav 37:311–321
 
Sih A, Englund G, Wooster D (1998) Emergent impacts of multiple predators on prey. Trends Ecol Evol 13:350–355
CrossRef
 
Soluk DA (1993) Multiple predator effects: predicting combined functional response of stream fish and invertebrate predators. Ecology 74:219–225
 
Soluk DA, Collins NC (1988) Synergistic interactions between fish and stoneflies: facilitation and interference among stream predators. Oikos 52:94–100
 
Soluk DA, Richardson JS (1997) The role of stoneflies in enhancing growth of trout: a test of the importance of predator–predator facilitation within a stream community. Oikos 80:214–219
 
Stoner AW (1982) The influence of benthic invertebrates on the foraging behaviour of pinfish, Lagodon rhomboides (Linnaeus). J Exp Mar Biol Ecol 58:271–284
CrossRef
 
Stoner AW, Lewis FGI (1985) The influence of quantitative and qualitative aspects of habitat complexity in tropical seagrass meadows. J Exp Mar Biol Ecol 94:49–40
 
Swisher BJ, Soluk DA, Wahl DH (1998) Non-additive predation in littoral habitats: influences of habitat complexity. Oikos 81:30–37
 
Walsh EJ (1995) Habitat-specific predation susceptibilities of a littoral rotifer to two invertebrate predators. Hydrobiologia 313/314:205–211
 
Warfe DM (2003) The role of habitat structure in a freshwater food web. PhD dissertation. University of Tasmania
 
Werner EE, Gilliam JF, Hall DJ, Mittelbach GG (1983) An experimental test of the effects of predation risk on habitat use in fish. Ecology 64:1540–1548
 
Wilkinson L (1999) SYSTAT, version 9. SYSTAT, Evanston, Ill.
 " name="eprints.referencetext" />
<meta content="Warfe, Danielle M. and Barmuta, Leon A. (2004) Habitat structural complexity mediates the foraging success of multiple predator species. Oecologia, 141 . pp. 171-178. ISSN 0029-8549" name="eprints.citation" />
<meta content="http://eprints.utas.edu.au/1924/1/WafeBarmuta2004.pdf" name="eprints.document_url" />
<link rel="schema.DC" href="http://purl.org/DC/elements/1.0/" />
<meta content="Habitat structural complexity mediates the foraging success of multiple predator species" name="DC.title" />
<meta content="Warfe, Danielle M." name="DC.creator" />
<meta content="Barmuta, Leon A." name="DC.creator" />
<meta content="270701 Freshwater Ecology" name="DC.subject" />
<meta content="270700 Ecology and Evolution" name="DC.subject" />
<meta content="270504 Invertebrate Biology" name="DC.subject" />
<meta content="We investigated the role of freshwater macrophytes as refuge by testing the hypothesis that predators capture fewer prey in more dense and structurally complex habitats. We also tested the hypothesis that habitat structure not only affects the prey-capture success of a single predator in isolation, but also the effectiveness of two predators combined, particularly if it mediates interactions between the predators. We conducted a fully crossed four-factorial laboratory experiment using artificial plants to determine the separate quantitative (density) and qualitative (shape) components of macrophyte structure on the prey-capture success of a predatory damselfly, Ischnura heterosticta tasmanica, and the southern pygmy perch, Nannoperca australis. Contrary to our expectations, macrophyte density had no effect on the prey-capture success of either predator, but both predators were significantly less effective in the structurally complex Myriophyllum analogue than in the structurally simpler Triglochin and Eleocharis analogues. Furthermore, the greater structural complexity of Myriophyllum amplified the impact of the negative interaction between the predators on prey numbers; the habitat use by damselfly larvae in response to the presence of southern pygmy perch meant they captured less prey in Myriophyllum. These results demonstrate habitat structure can influence multiple predator effects, and support the mechanism of increased prey refuge in more structurally complex macrophytes." name="DC.description" />
<meta content="2004-08-06" name="DC.date" />
<meta content="Article" name="DC.type" />
<meta content="PeerReviewed" name="DC.type" />
<meta content="application/pdf" name="DC.format" />
<meta content="http://eprints.utas.edu.au/1924/1/WafeBarmuta2004.pdf" name="DC.identifier" />
<meta content="http://dx.doi.org/10.1007/s00442-004-1644-x" name="DC.relation" />
<meta content="Warfe, Danielle M. and Barmuta, Leon A. (2004) Habitat structural complexity mediates the foraging success of multiple predator species. Oecologia, 141 . pp. 171-178. ISSN 0029-8549" name="DC.identifier" />
<meta content="http://eprints.utas.edu.au/1924/" name="DC.relation" />
<link rel="alternate" href="http://eprints.utas.edu.au/cgi/export/1924/BibTeX/epprod-eprint-1924.bib" title="BibTeX" type="text/plain" />
<link rel="alternate" href="http://eprints.utas.edu.au/cgi/export/1924/ContextObject/epprod-eprint-1924.xml" title="OpenURL ContextObject" type="text/xml" />
<link rel="alternate" href="http://eprints.utas.edu.au/cgi/export/1924/ContextObject::Dissertation/epprod-eprint-1924.xml" title="OpenURL Dissertation" type="text/xml" />
<link rel="alternate" href="http://eprints.utas.edu.au/cgi/export/1924/ContextObject::Journal/epprod-eprint-1924.xml" title="OpenURL Journal" type="text/xml" />
<link rel="alternate" href="http://eprints.utas.edu.au/cgi/export/1924/DC/epprod-eprint-1924.txt" title="Dublin Core" type="text/plain" />
<link rel="alternate" href="http://eprints.utas.edu.au/cgi/export/1924/DIDL/epprod-eprint-1924.xml" title="DIDL" type="text/xml" />
<link rel="alternate" href="http://eprints.utas.edu.au/cgi/export/1924/EndNote/epprod-eprint-1924.enw" title="EndNote" type="text/plain" />
<link rel="alternate" href="http://eprints.utas.edu.au/cgi/export/1924/HTML/epprod-eprint-1924.html" title="HTML Citation" type="text/html; charset=utf-8" />
<link rel="alternate" href="http://eprints.utas.edu.au/cgi/export/1924/METS/epprod-eprint-1924.xml" title="METS" type="text/xml" />
<link rel="alternate" href="http://eprints.utas.edu.au/cgi/export/1924/MODS/epprod-eprint-1924.xml" title="MODS" type="text/xml" />
<link rel="alternate" href="http://eprints.utas.edu.au/cgi/export/1924/RIS/epprod-eprint-1924.ris" title="Reference Manager" type="text/plain" />
<link rel="alternate" href="http://eprints.utas.edu.au/cgi/export/1924/Refer/epprod-eprint-1924.refer" title="Refer" type="text/plain" />
<link rel="alternate" href="http://eprints.utas.edu.au/cgi/export/1924/Simple/epprod-eprint-1924text" title="Simple Metadata" type="text/plain" />
<link rel="alternate" href="http://eprints.utas.edu.au/cgi/export/1924/Text/epprod-eprint-1924.txt" title="ASCII Citation" type="text/plain; charset=utf-8" />
<link rel="alternate" href="http://eprints.utas.edu.au/cgi/export/1924/XML/epprod-eprint-1924.xml" title="EP3 XML" type="text/xml" />

  </head>
  <body bgcolor="#ffffff" text="#000000" onLoad="loadRoutine(); MM_preloadImages('images/eprints/ePrints_banner_r5_c5_f2.gif','images/eprints/ePrints_banner_r5_c7_f2.gif','images/eprints/ePrints_banner_r5_c8_f2.gif','images/eprints/ePrints_banner_r5_c9_f2.gif','images/eprints/ePrints_banner_r5_c10_f2.gif','images/eprints/ePrints_banner_r5_c11_f2.gif','images/eprints/ePrints_banner_r6_c4_f2.gif')">
    
    <div class="ep_noprint"><noscript><style type="text/css">@import url(http://eprints.utas.edu.au/style/nojs.css);</style></noscript></div>




<table width="795" border="0" cellspacing="0" cellpadding="0">
  <tr>
    <td><script language="JavaScript1.2">mmLoadMenus();</script>
      <table border="0" cellpadding="0" cellspacing="0" width="795">
        <!-- fwtable fwsrc="eprints_banner_final2.png" fwbase="ePrints_banner.gif" fwstyle="Dreamweaver" fwdocid = "1249563342" fwnested="0" -->
        <tr>
          <td><img src="/images/eprints/spacer.gif" width="32" height="1" border="0" alt="" /></td>
          <td><img src="/images/eprints/spacer.gif" width="104" height="1" border="0" alt="" /></td>
          <td><img src="/images/eprints/spacer.gif" width="44" height="1" border="0" alt="" /></td>
          <td><img src="/images/eprints/spacer.gif" width="105" height="1" border="0" alt="" /></td>
          <td><img src="/images/eprints/spacer.gif" width="41" height="1" border="0" alt="" /></td>
          <td><img src="/images/eprints/spacer.gif" width="16" height="1" border="0" alt="" /></td>
          <td><img src="/images/eprints/spacer.gif" width="68" height="1" border="0" alt="" /></td>
          <td><img src="/images/eprints/spacer.gif" width="68" height="1" border="0" alt="" /></td>
          <td><img src="/images/eprints/spacer.gif" width="68" height="1" border="0" alt="" /></td>
          <td><img src="/images/eprints/spacer.gif" width="82" height="1" border="0" alt="" /></td>
          <td><img src="/images/eprints/spacer.gif" width="69" height="1" border="0" alt="" /></td>
          <td><img src="/images/eprints/spacer.gif" width="98" height="1" border="0" alt="" /></td>
          <td><img src="/images/eprints/spacer.gif" width="1" height="1" border="0" alt="" /></td>
        </tr>
        <tr>
          <td colspan="12"><img name="ePrints_banner_r1_c1" src="/images/eprints/ePrints_banner_r1_c1.gif" width="795" height="10" border="0" alt="" /></td>
          <td><img src="/images/eprints/spacer.gif" width="1" height="10" border="0" alt="" /></td>
        </tr>
        <tr>
          <td rowspan="6"><img name="ePrints_banner_r2_c1" src="/images/eprints/ePrints_banner_r2_c1.gif" width="32" height="118" border="0" alt="" /></td>
          <td rowspan="5"><a href="http://www.utas.edu.au/"><img name="ePrints_banner_r2_c2" src="/images/eprints/ePrints_banner_r2_c2.gif" width="104" height="103" border="0" alt="" /></a></td>
          <td colspan="10"><img name="ePrints_banner_r2_c3" src="/images/eprints/ePrints_banner_r2_c3.gif" width="659" height="41" border="0" alt="" /></td>
          <td><img src="/images/eprints/spacer.gif" width="1" height="41" border="0" alt="" /></td>
        </tr>
        <tr>
          <td colspan="3"><a href="http://eprints.utas.edu.au/"><img name="ePrints_banner_r3_c3" src="/images/eprints/ePrints_banner_r3_c3.gif" width="190" height="31" border="0" alt="" /></a></td>
          <td rowspan="2" colspan="7"><img name="ePrints_banner_r3_c6" src="/images/eprints/ePrints_banner_r3_c6.gif" width="469" height="37" border="0" alt="" /></td>
          <td><img src="/images/eprints/spacer.gif" width="1" height="31" border="0" alt="" /></td>
        </tr>
        <tr>
          <td colspan="3"><img name="ePrints_banner_r4_c3" src="/images/eprints/ePrints_banner_r4_c3.gif" width="190" height="6" border="0" alt="" /></td>
          <td><img src="/images/eprints/spacer.gif" width="1" height="6" border="0" alt="" /></td>
        </tr>
        <tr>
          <td colspan="2"><img name="ePrints_banner_r5_c3" src="/images/eprints/ePrints_banner_r5_c3.gif" width="149" height="1" border="0" alt="" /></td>
          <td rowspan="2" colspan="2"><a href="/information.html" onMouseOut="MM_swapImgRestore();MM_startTimeout()" onMouseOver="MM_showMenu(window.mm_menu_0821132634_0,0,25,null,'ePrints_banner_r5_c5');MM_swapImage('ePrints_banner_r5_c5','','/images/eprints/ePrints_banner_r5_c5_f2.gif',1);"><img name="ePrints_banner_r5_c5" src="/images/eprints/ePrints_banner_r5_c5.gif" width="57" height="25" border="0" alt="About" /></a></td>
          <td rowspan="2"><a href="/view/" onMouseOut="MM_swapImgRestore();MM_startTimeout()" onMouseOver="MM_showMenu(window.mm_menu_0821133021_1,0,25,null,'ePrints_banner_r5_c7');MM_swapImage('ePrints_banner_r5_c7','','/images/eprints/ePrints_banner_r5_c7_f2.gif',1);"><img name="ePrints_banner_r5_c7" src="/images/eprints/ePrints_banner_r5_c7.gif" width="68" height="25" border="0" alt="Browse" /></a></td>
          <td rowspan="2"><a href="/perl/search/simple" onMouseOut="MM_swapImgRestore();MM_startTimeout()" onMouseOver="MM_showMenu(window.mm_menu_0821133201_2,0,25,null,'ePrints_banner_r5_c8');MM_swapImage('ePrints_banner_r5_c8','','/images/eprints/ePrints_banner_r5_c8_f2.gif',1);"><img name="ePrints_banner_r5_c8" src="/images/eprints/ePrints_banner_r5_c8.gif" width="68" height="25" border="0" alt="Search" /></a></td>
          <td rowspan="2"><a href="/perl/register" onMouseOut="MM_swapImgRestore();MM_startTimeout();" onMouseOver="MM_showMenu(window.mm_menu_1018171924_3,0,25,null,'ePrints_banner_r5_c9');MM_swapImage('ePrints_banner_r5_c9','','/images/eprints/ePrints_banner_r5_c9_f2.gif',1);"><img name="ePrints_banner_r5_c9" src="/images/eprints/ePrints_banner_r5_c9.gif" width="68" height="25" border="0" alt="register" /></a></td>
          <td rowspan="2"><a href="/perl/users/home" onMouseOut="MM_swapImgRestore();MM_startTimeout()" onMouseOver="MM_showMenu(window.mm_menu_0821133422_4,0,25,null,'ePrints_banner_r5_c10');MM_swapImage('ePrints_banner_r5_c10','','/images/eprints/ePrints_banner_r5_c10_f2.gif',1);"><img name="ePrints_banner_r5_c10" src="/images/eprints/ePrints_banner_r5_c10.gif" width="82" height="25" border="0" alt="user area" /></a></td>
          <td rowspan="2"><a href="/help/" onMouseOut="MM_swapImgRestore();MM_startTimeout()" onMouseOver="MM_showMenu(window.mm_menu_0821133514_5,0,25,null,'ePrints_banner_r5_c11');MM_swapImage('ePrints_banner_r5_c11','','/images/eprints/ePrints_banner_r5_c11_f2.gif',1);"><img name="ePrints_banner_r5_c11" src="/images/eprints/ePrints_banner_r5_c11.gif" width="69" height="25" border="0" alt="Help" /></a></td>
          <td rowspan="3" colspan="4"><img name="ePrints_banner_r5_c12" src="/images/eprints/ePrints_banner_r5_c12.gif" width="98" height="40" border="0" alt="" /></td>
          <td><img src="/images/eprints/spacer.gif" width="1" height="1" border="0" alt="" /></td>
        </tr>
        <tr>
          <td rowspan="2"><img name="ePrints_banner_r6_c3" src="/images/eprints/ePrints_banner_r6_c3.gif" width="44" height="39" border="0" alt="ePrints home" /></td>
          <td><a href="/" onMouseOut="MM_swapImgRestore()" onMouseOver="MM_swapImage('ePrints_banner_r6_c4','','/images/eprints/ePrints_banner_r6_c4_f2.gif',1);"><img name="ePrints_banner_r6_c4" src="/images/eprints/ePrints_banner_r6_c4.gif" width="105" height="24" border="0" alt="ePrints home" /></a></td>
          <td><img src="/images/eprints/spacer.gif" width="1" height="24" border="0" alt="" /></td>
        </tr>
        <tr>
          <td><img name="ePrints_banner_r7_c2" src="/images/eprints/ePrints_banner_r7_c2.gif" width="104" height="15" border="0" alt="" /></td>
          <td colspan="8"><img name="ePrints_banner_r7_c4" src="/images/eprints/ePrints_banner_r7_c4.gif" width="517" height="15" border="0" alt="" /></td>
          <td><img src="/images/eprints/spacer.gif" width="1" height="15" border="0" alt="" /></td>
        </tr>
      </table></td>
  </tr>
    <tr><td><table width="100%" style="font-size: 90%; border: solid 1px #ccc; padding: 3px"><tr>
      <td align="left"><a href="http://eprints.utas.edu.au/cgi/users/home">Login</a> | <a href="http://eprints.utas.edu.au/cgi/register">Create Account</a></td>
      <td align="right" style="white-space: nowrap">
        <form method="get" accept-charset="utf-8" action="http://eprints.utas.edu.au/cgi/search" style="display:inline">
          <input class="ep_tm_searchbarbox" size="20" type="text" name="q" />
          <input class="ep_tm_searchbarbutton" value="Search" type="submit" name="_action_search" />
          <input type="hidden" name="_order" value="bytitle" />
          <input type="hidden" name="basic_srchtype" value="ALL" />
          <input type="hidden" name="_satisfyall" value="ALL" />
        </form>
      </td>
    </tr></table></td></tr>
  <tr>
    <td class="toplinks"><!-- InstanceBeginEditable name="content" -->


<div align="center">
  
  <table width="720" class="ep_tm_main"><tr><td align="left">
    <h1 class="ep_tm_pagetitle">Habitat structural complexity mediates the foraging success of multiple predator species</h1>
    <p style="margin-bottom: 1em" class="not_ep_block"><span class="person_name">Warfe, Danielle M.</span> and <span class="person_name">Barmuta, Leon A.</span> (2004) <xhtml:em>Habitat structural complexity mediates the foraging success of multiple predator species.</xhtml:em> Oecologia, 141 . pp. 171-178. ISSN 0029-8549</p><p style="margin-bottom: 1em" class="not_ep_block"></p><table style="margin-bottom: 1em" class="not_ep_block"><tr><td valign="top" style="text-align:center"><a href="http://eprints.utas.edu.au/1924/1/WafeBarmuta2004.pdf"><img alt="[img]" src="http://eprints.utas.edu.au/style/images/fileicons/application_pdf.png" class="ep_doc_icon" border="0" /></a></td><td valign="top"><a href="http://eprints.utas.edu.au/1924/1/WafeBarmuta2004.pdf"><span class="ep_document_citation">PDF</span></a> - Full text restricted - Requires a PDF viewer<br />169Kb</td></tr></table><p style="margin-bottom: 1em" class="not_ep_block">Official URL: <a href="http://dx.doi.org/10.1007/s00442-004-1644-x">http://dx.doi.org/10.1007/s00442-004-1644-x</a></p><div class="not_ep_block"><h2>Abstract</h2><p style="padding-bottom: 16px; text-align: left; margin: 1em auto 0em auto">We investigated the role of freshwater macrophytes as refuge by testing the hypothesis that predators capture fewer prey in more dense and structurally complex habitats. We also tested the hypothesis that habitat structure not only affects the prey-capture success of a single predator in isolation, but also the effectiveness of two predators combined, particularly if it mediates interactions between the predators. We conducted a fully crossed four-factorial laboratory experiment using artificial plants to determine the separate quantitative (density) and qualitative (shape) components of macrophyte structure on the prey-capture success of a predatory damselfly, Ischnura heterosticta tasmanica, and the southern pygmy perch, Nannoperca australis. Contrary to our expectations, macrophyte density had no effect on the prey-capture success of either predator, but both predators were significantly less effective in the structurally complex Myriophyllum analogue than in the structurally simpler Triglochin and Eleocharis analogues. Furthermore, the greater structural complexity of Myriophyllum amplified the impact of the negative interaction between the predators on prey numbers; the habitat use by damselfly larvae in response to the presence of southern pygmy perch meant they captured less prey in Myriophyllum. These results demonstrate habitat structure can influence multiple predator effects, and support the mechanism of increased prey refuge in more structurally complex macrophytes.</p></div><table style="margin-bottom: 1em" cellpadding="3" class="not_ep_block" border="0"><tr><th valign="top" class="ep_row">Item Type:</th><td valign="top" class="ep_row">Article</td></tr><tr><th valign="top" class="ep_row">Additional Information:</th><td valign="top" class="ep_row">The original publication is available at www.springerlink.com</td></tr><tr><th valign="top" class="ep_row">Keywords:</th><td valign="top" class="ep_row">Macrophyte structure
Multiple predators
Non-additivity
Predator, predator interactions
Habitat complexity
Community ecology
Refuge</td></tr><tr><th valign="top" class="ep_row">Subjects:</th><td valign="top" class="ep_row"><a href="http://eprints.utas.edu.au/view/subjects/270701.html">270000 Biological Sciences &gt; 270700 Ecology and Evolution &gt; 270701 Freshwater Ecology</a><br /><a href="http://eprints.utas.edu.au/view/subjects/270700.html">270000 Biological Sciences &gt; 270700 Ecology and Evolution</a><br /><a href="http://eprints.utas.edu.au/view/subjects/270504.html">270000 Biological Sciences &gt; 270500 Zoology &gt; 270504 Invertebrate Biology</a></td></tr><tr><th valign="top" class="ep_row">ID Code:</th><td valign="top" class="ep_row">1924</td></tr><tr><th valign="top" class="ep_row">Deposited By:</th><td valign="top" class="ep_row"><span class="ep_name_citation"><span class="person_name">Dr Leon A. Barmuta</span></span></td></tr><tr><th valign="top" class="ep_row">Deposited On:</th><td valign="top" class="ep_row">21 Sep 2007</td></tr><tr><th valign="top" class="ep_row">Last Modified:</th><td valign="top" class="ep_row">09 Jan 2008 02:30</td></tr><tr><th valign="top" class="ep_row">ePrint Statistics:</th><td valign="top" class="ep_row"><a target="ePrintStats" href="/es/index.php?action=show_detail_eprint;id=1924;">View statistics for this ePrint</a></td></tr></table><p align="right">Repository Staff Only: <a href="http://eprints.utas.edu.au/cgi/users/home?screen=EPrint::View&amp;eprintid=1924">item control page</a></p>
  </td></tr></table>
</div>



    <!-- InstanceEndEditable --></td>
  </tr>
  <tr>
    <td><!-- #BeginLibraryItem "/Library/footer_eprints.lbi" -->
    <table width="795" border="0" align="left" cellpadding="0" class="footer">
  <tr valign="top">
<td colspan="2"><div align="center"><a href="http://www.utas.edu.au">UTAS home</a> | <a href="http://www.utas.edu.au/library/">Library home</a> | <a href="/">ePrints home</a> | <a href="/contact.html">contact</a> | <a href="/information.html">about</a> | <a href="/view/">browse</a> | <a href="/perl/search/simple">search</a> | <a href="/perl/register">register</a> | <a href="/perl/users/home">user area</a> | <a href="/help/">help</a></div><br /></td>
</tr>
<tr><td colspan="2"><p><img src="/images/eprints/footerline.gif" width="100%" height="4" /></p></td></tr>
      <tr valign="top">
        <td width="68%" class="footer">Authorised by the University Librarian<br />
© University of Tasmania ABN 30 764 374 782<br />
      <a href="http://www.utas.edu.au/cricos/">CRICOS Provider Code 00586B</a> | <a href="http://www.utas.edu.au/copyright/copyright_disclaimers.html">Copyright &amp; Disclaimers</a> | <a href="http://www.utas.edu.au/accessibility/index.html">Accessibility</a> | <a href="http://eprints.utas.edu.au/feedback/">Site Feedback</a>  </td>
        <td width="32%"><div align="right">
            <p align="right" class="NoPrint"><a href="http://www.utas.edu.au/"><img src="http://www.utas.edu.au/shared/logos/unioftasstrip.gif" alt="University of Tasmania Home Page" width="260" height="16" border="0" align="right" /></a></p>
            <p align="right" class="NoPrint"><a href="http://www.utas.edu.au/"><br />
            </a></p>
        </div></td>
      </tr>
      <tr valign="top">
        <td><p>  </p></td>
        <td><div align="right"><span class="NoPrint"><a href="http://www.eprints.org/software/"><img src="/images/eprintslogo.gif" alt="ePrints logo" width="77" height="29" border="0" align="bottom" /></a></span></div></td>
      </tr>
    </table>
    <!-- #EndLibraryItem -->
    <div align="center"></div></td>
  </tr>
</table>

  </body>
</html>