Biophysical feedback mediates effects of invasive grasses on coastal dune shape
Vegetation at the aquatic-terrestrial interface can alter landscape features through its growth and interactions with sediment and fluids. Even similar species may impart different effects due to variation in their interactions and feedbacks with the environment. Consequently, replacement of one eng...
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Veröffentlicht in: | Ecology (Durham) 2012-06, Vol.93 (6), p.1439-1450 |
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creator | Zarnetske, Phoebe L. Hacker, Sally D. Seabloom, Eric W. Ruggiero, Peter Killian, Jason R. Maddux, Timothy B. Cox, Daniel |
description | Vegetation at the aquatic-terrestrial interface can alter landscape features through its growth and interactions with sediment and fluids. Even similar species may impart different effects due to variation in their interactions and feedbacks with the environment. Consequently, replacement of one engineering species by another can cause significant change in the physical environment. Here we investigate the species-specific ecological mechanisms influencing the geomorphology of U.S. Pacific Northwest coastal dunes. Over the last century, this system changed from open, shifting sand dunes with sparse vegetation (including native beach grass,
Elymus mollis
), to densely vegetated continuous foredune ridges resulting from the introduction and subsequent invasions of two nonnative grass species (
Ammophila arenaria
and
Ammophila breviligulata
), each of which is associated with different dune shapes and sediment supply rates along the coast. Here we propose a biophysical feedback responsible for differences in dune shape, and we investigate two, non-mutually exclusive ecological mechanisms for these differences: (1) species differ in their ability to capture sand and (2) species differ in their growth habit in response to sand deposition. To investigate sand capture, we used a moveable bed wind tunnel experiment and found that increasing tiller density increased sand capture efficiency and that, under different experimental densities, the native grass had higher sand capture efficiency compared to the
Ammophila
congeners. However, the greater densities of nonnative grasses under field conditions suggest that they have greater potential to capture more sand overall. We used a mesocosm experiment to look at plant growth responses to sand deposition and found that, in response to increasing sand supply rates,
A. arenaria
produced higher-density vertical tillers (characteristic of higher sand capture efficiency), while
A. breviligulata
and
E. mollis
responded with lower-density lateral tiller growth (characteristic of lower sand capture efficiency). Combined, these experiments provide evidence for a species-specific effect on coastal dune shape. Understanding how dominant ecosystem engineers, especially nonnative ones, differ in their interactions with abiotic factors is necessary to better parameterize coastal vulnerability models and inform management practices related to both coastal protection ecosystem services and ecosystem restoration. |
doi_str_mv | 10.1890/11-1112.1 |
format | Article |
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Elymus mollis
), to densely vegetated continuous foredune ridges resulting from the introduction and subsequent invasions of two nonnative grass species (
Ammophila arenaria
and
Ammophila breviligulata
), each of which is associated with different dune shapes and sediment supply rates along the coast. Here we propose a biophysical feedback responsible for differences in dune shape, and we investigate two, non-mutually exclusive ecological mechanisms for these differences: (1) species differ in their ability to capture sand and (2) species differ in their growth habit in response to sand deposition. To investigate sand capture, we used a moveable bed wind tunnel experiment and found that increasing tiller density increased sand capture efficiency and that, under different experimental densities, the native grass had higher sand capture efficiency compared to the
Ammophila
congeners. However, the greater densities of nonnative grasses under field conditions suggest that they have greater potential to capture more sand overall. We used a mesocosm experiment to look at plant growth responses to sand deposition and found that, in response to increasing sand supply rates,
A. arenaria
produced higher-density vertical tillers (characteristic of higher sand capture efficiency), while
A. breviligulata
and
E. mollis
responded with lower-density lateral tiller growth (characteristic of lower sand capture efficiency). Combined, these experiments provide evidence for a species-specific effect on coastal dune shape. Understanding how dominant ecosystem engineers, especially nonnative ones, differ in their interactions with abiotic factors is necessary to better parameterize coastal vulnerability models and inform management practices related to both coastal protection ecosystem services and ecosystem restoration.</description><identifier>ISSN: 0012-9658</identifier><identifier>EISSN: 1939-9170</identifier><identifier>DOI: 10.1890/11-1112.1</identifier><identifier>PMID: 22834384</identifier><identifier>CODEN: ECGYAQ</identifier><language>eng</language><publisher>Washington, DC: Ecological Society of America</publisher><subject>Ammophila ; Ammophila arenaria ; Ammophila breviligulata ; Animal and plant ecology ; Animal, plant and microbial ecology ; Arenaria ; Biological and medical sciences ; Coastal ecology ; Dunes ; Ecology ; ecomorphology ; Ecosystem ; ecosystem engineer ; ecosystem service ; Ecosystem services ; Elymus mollis ; foredune ; Fundamental and applied biological sciences. Psychology ; General aspects ; geomorphology ; Grasses ; Introduced Species ; invasive species ; Nonnative species ; Poaceae - classification ; Poaceae - physiology ; Sand ; sediment deposition ; sediment transport ; Sediments ; Silicon Dioxide ; Species ; Species Specificity ; Tillers ; Vegetation ; wind tunnel ; Wind tunnels ; Wind velocity</subject><ispartof>Ecology (Durham), 2012-06, Vol.93 (6), p.1439-1450</ispartof><rights>Copyright © 2012 Ecological Society of America</rights><rights>2012 by the Ecological Society of America</rights><rights>2015 INIST-CNRS</rights><rights>Copyright Ecological Society of America Jun 2012</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-a5009-f0115e020f732ecb1cbc482de74052588aa80dde6285e9c866157e518a773a383</citedby><cites>FETCH-LOGICAL-a5009-f0115e020f732ecb1cbc482de74052588aa80dde6285e9c866157e518a773a383</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.jstor.org/stable/pdf/23213773$$EPDF$$P50$$Gjstor$$H</linktopdf><linktohtml>$$Uhttps://www.jstor.org/stable/23213773$$EHTML$$P50$$Gjstor$$H</linktohtml><link.rule.ids>314,777,781,800,1412,27905,27906,45555,45556,57998,58231</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=25990959$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/22834384$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><contributor>Yavitt, JB</contributor><creatorcontrib>Zarnetske, Phoebe L.</creatorcontrib><creatorcontrib>Hacker, Sally D.</creatorcontrib><creatorcontrib>Seabloom, Eric W.</creatorcontrib><creatorcontrib>Ruggiero, Peter</creatorcontrib><creatorcontrib>Killian, Jason R.</creatorcontrib><creatorcontrib>Maddux, Timothy B.</creatorcontrib><creatorcontrib>Cox, Daniel</creatorcontrib><title>Biophysical feedback mediates effects of invasive grasses on coastal dune shape</title><title>Ecology (Durham)</title><addtitle>Ecology</addtitle><description>Vegetation at the aquatic-terrestrial interface can alter landscape features through its growth and interactions with sediment and fluids. Even similar species may impart different effects due to variation in their interactions and feedbacks with the environment. Consequently, replacement of one engineering species by another can cause significant change in the physical environment. Here we investigate the species-specific ecological mechanisms influencing the geomorphology of U.S. Pacific Northwest coastal dunes. Over the last century, this system changed from open, shifting sand dunes with sparse vegetation (including native beach grass,
Elymus mollis
), to densely vegetated continuous foredune ridges resulting from the introduction and subsequent invasions of two nonnative grass species (
Ammophila arenaria
and
Ammophila breviligulata
), each of which is associated with different dune shapes and sediment supply rates along the coast. Here we propose a biophysical feedback responsible for differences in dune shape, and we investigate two, non-mutually exclusive ecological mechanisms for these differences: (1) species differ in their ability to capture sand and (2) species differ in their growth habit in response to sand deposition. To investigate sand capture, we used a moveable bed wind tunnel experiment and found that increasing tiller density increased sand capture efficiency and that, under different experimental densities, the native grass had higher sand capture efficiency compared to the
Ammophila
congeners. However, the greater densities of nonnative grasses under field conditions suggest that they have greater potential to capture more sand overall. We used a mesocosm experiment to look at plant growth responses to sand deposition and found that, in response to increasing sand supply rates,
A. arenaria
produced higher-density vertical tillers (characteristic of higher sand capture efficiency), while
A. breviligulata
and
E. mollis
responded with lower-density lateral tiller growth (characteristic of lower sand capture efficiency). Combined, these experiments provide evidence for a species-specific effect on coastal dune shape. Understanding how dominant ecosystem engineers, especially nonnative ones, differ in their interactions with abiotic factors is necessary to better parameterize coastal vulnerability models and inform management practices related to both coastal protection ecosystem services and ecosystem restoration.</description><subject>Ammophila</subject><subject>Ammophila arenaria</subject><subject>Ammophila breviligulata</subject><subject>Animal and plant ecology</subject><subject>Animal, plant and microbial ecology</subject><subject>Arenaria</subject><subject>Biological and medical sciences</subject><subject>Coastal ecology</subject><subject>Dunes</subject><subject>Ecology</subject><subject>ecomorphology</subject><subject>Ecosystem</subject><subject>ecosystem engineer</subject><subject>ecosystem service</subject><subject>Ecosystem services</subject><subject>Elymus mollis</subject><subject>foredune</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>General aspects</subject><subject>geomorphology</subject><subject>Grasses</subject><subject>Introduced Species</subject><subject>invasive species</subject><subject>Nonnative species</subject><subject>Poaceae - classification</subject><subject>Poaceae - physiology</subject><subject>Sand</subject><subject>sediment deposition</subject><subject>sediment transport</subject><subject>Sediments</subject><subject>Silicon Dioxide</subject><subject>Species</subject><subject>Species Specificity</subject><subject>Tillers</subject><subject>Vegetation</subject><subject>wind tunnel</subject><subject>Wind tunnels</subject><subject>Wind velocity</subject><issn>0012-9658</issn><issn>1939-9170</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2012</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqNkUFv1DAQhS0EosvCgR8AioSQ4JDisePEPsKqFKRKvcCBk-V1xjRLNg6ZpLD_Hke7dBEtEpYlH_zNe5r3GHsK_BS04W8AcgAQp3CPLcBIkxuo-H224BxEbkqlT9gjog1PBwr9kJ0IoWUhdbFgl--a2F_tqPGuzQJivXb-W7bFunEjUoYhoB8piyFrumtHzTVmXwdHlP5il_noaEyD9dRhRleux8fsQXAt4ZPDu2Sf3599Wn3ILy7PP67eXuROcW7ywAEUcsFDJQX6Nfi1L7SosSq4Ekpr5zSvayyFVmi8LktQFSrQrqqkk1ou2au9bj_E7xPSaLcNeWxb12GcyAKXnFcpB_gPVGguqxRJQl_8hW7iNHRpkZkCnsJNd8le7yk_RKIBg-2HZuuGXYLsXIgFsHMhdjZ_flCc1inVG_J3Awl4eQAcpQ7C4Drf0JFTxnCjZlO15340Le7-7WjPVl9E6t3IEgo5zz3bz21ojMNRVwqQKcvjym7c9bGzSO4Psb4Odvw53k3dWvYXU76-ug</recordid><startdate>201206</startdate><enddate>201206</enddate><creator>Zarnetske, Phoebe L.</creator><creator>Hacker, Sally D.</creator><creator>Seabloom, Eric W.</creator><creator>Ruggiero, Peter</creator><creator>Killian, Jason R.</creator><creator>Maddux, Timothy B.</creator><creator>Cox, Daniel</creator><general>Ecological Society of America</general><scope>IQODW</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7QG</scope><scope>7SN</scope><scope>7SS</scope><scope>7ST</scope><scope>7T7</scope><scope>8FD</scope><scope>C1K</scope><scope>FR3</scope><scope>K9.</scope><scope>P64</scope><scope>RC3</scope><scope>SOI</scope><scope>7TG</scope><scope>KL.</scope><scope>7X8</scope></search><sort><creationdate>201206</creationdate><title>Biophysical feedback mediates effects of invasive grasses on coastal dune shape</title><author>Zarnetske, Phoebe L. ; Hacker, Sally D. ; Seabloom, Eric W. ; Ruggiero, Peter ; Killian, Jason R. ; Maddux, Timothy B. ; Cox, Daniel</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a5009-f0115e020f732ecb1cbc482de74052588aa80dde6285e9c866157e518a773a383</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2012</creationdate><topic>Ammophila</topic><topic>Ammophila arenaria</topic><topic>Ammophila breviligulata</topic><topic>Animal and plant ecology</topic><topic>Animal, plant and microbial ecology</topic><topic>Arenaria</topic><topic>Biological and medical sciences</topic><topic>Coastal ecology</topic><topic>Dunes</topic><topic>Ecology</topic><topic>ecomorphology</topic><topic>Ecosystem</topic><topic>ecosystem engineer</topic><topic>ecosystem service</topic><topic>Ecosystem services</topic><topic>Elymus mollis</topic><topic>foredune</topic><topic>Fundamental and applied biological sciences. Psychology</topic><topic>General aspects</topic><topic>geomorphology</topic><topic>Grasses</topic><topic>Introduced Species</topic><topic>invasive species</topic><topic>Nonnative species</topic><topic>Poaceae - classification</topic><topic>Poaceae - physiology</topic><topic>Sand</topic><topic>sediment deposition</topic><topic>sediment transport</topic><topic>Sediments</topic><topic>Silicon Dioxide</topic><topic>Species</topic><topic>Species Specificity</topic><topic>Tillers</topic><topic>Vegetation</topic><topic>wind tunnel</topic><topic>Wind tunnels</topic><topic>Wind velocity</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Zarnetske, Phoebe L.</creatorcontrib><creatorcontrib>Hacker, Sally D.</creatorcontrib><creatorcontrib>Seabloom, Eric W.</creatorcontrib><creatorcontrib>Ruggiero, Peter</creatorcontrib><creatorcontrib>Killian, Jason R.</creatorcontrib><creatorcontrib>Maddux, Timothy B.</creatorcontrib><creatorcontrib>Cox, Daniel</creatorcontrib><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>Animal Behavior Abstracts</collection><collection>Ecology Abstracts</collection><collection>Entomology Abstracts (Full archive)</collection><collection>Environment Abstracts</collection><collection>Industrial and Applied Microbiology Abstracts (Microbiology A)</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Engineering Research Database</collection><collection>ProQuest Health & Medical Complete (Alumni)</collection><collection>Biotechnology and BioEngineering Abstracts</collection><collection>Genetics Abstracts</collection><collection>Environment Abstracts</collection><collection>Meteorological & Geoastrophysical Abstracts</collection><collection>Meteorological & Geoastrophysical Abstracts - Academic</collection><collection>MEDLINE - Academic</collection><jtitle>Ecology (Durham)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Zarnetske, Phoebe L.</au><au>Hacker, Sally D.</au><au>Seabloom, Eric W.</au><au>Ruggiero, Peter</au><au>Killian, Jason R.</au><au>Maddux, Timothy B.</au><au>Cox, Daniel</au><au>Yavitt, JB</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Biophysical feedback mediates effects of invasive grasses on coastal dune shape</atitle><jtitle>Ecology (Durham)</jtitle><addtitle>Ecology</addtitle><date>2012-06</date><risdate>2012</risdate><volume>93</volume><issue>6</issue><spage>1439</spage><epage>1450</epage><pages>1439-1450</pages><issn>0012-9658</issn><eissn>1939-9170</eissn><coden>ECGYAQ</coden><abstract>Vegetation at the aquatic-terrestrial interface can alter landscape features through its growth and interactions with sediment and fluids. Even similar species may impart different effects due to variation in their interactions and feedbacks with the environment. Consequently, replacement of one engineering species by another can cause significant change in the physical environment. Here we investigate the species-specific ecological mechanisms influencing the geomorphology of U.S. Pacific Northwest coastal dunes. Over the last century, this system changed from open, shifting sand dunes with sparse vegetation (including native beach grass,
Elymus mollis
), to densely vegetated continuous foredune ridges resulting from the introduction and subsequent invasions of two nonnative grass species (
Ammophila arenaria
and
Ammophila breviligulata
), each of which is associated with different dune shapes and sediment supply rates along the coast. Here we propose a biophysical feedback responsible for differences in dune shape, and we investigate two, non-mutually exclusive ecological mechanisms for these differences: (1) species differ in their ability to capture sand and (2) species differ in their growth habit in response to sand deposition. To investigate sand capture, we used a moveable bed wind tunnel experiment and found that increasing tiller density increased sand capture efficiency and that, under different experimental densities, the native grass had higher sand capture efficiency compared to the
Ammophila
congeners. However, the greater densities of nonnative grasses under field conditions suggest that they have greater potential to capture more sand overall. We used a mesocosm experiment to look at plant growth responses to sand deposition and found that, in response to increasing sand supply rates,
A. arenaria
produced higher-density vertical tillers (characteristic of higher sand capture efficiency), while
A. breviligulata
and
E. mollis
responded with lower-density lateral tiller growth (characteristic of lower sand capture efficiency). Combined, these experiments provide evidence for a species-specific effect on coastal dune shape. Understanding how dominant ecosystem engineers, especially nonnative ones, differ in their interactions with abiotic factors is necessary to better parameterize coastal vulnerability models and inform management practices related to both coastal protection ecosystem services and ecosystem restoration.</abstract><cop>Washington, DC</cop><pub>Ecological Society of America</pub><pmid>22834384</pmid><doi>10.1890/11-1112.1</doi><tpages>12</tpages></addata></record> |
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language | eng |
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source | MEDLINE; Wiley Online Library Journals Frontfile Complete; Jstor Complete Legacy |
subjects | Ammophila Ammophila arenaria Ammophila breviligulata Animal and plant ecology Animal, plant and microbial ecology Arenaria Biological and medical sciences Coastal ecology Dunes Ecology ecomorphology Ecosystem ecosystem engineer ecosystem service Ecosystem services Elymus mollis foredune Fundamental and applied biological sciences. Psychology General aspects geomorphology Grasses Introduced Species invasive species Nonnative species Poaceae - classification Poaceae - physiology Sand sediment deposition sediment transport Sediments Silicon Dioxide Species Species Specificity Tillers Vegetation wind tunnel Wind tunnels Wind velocity |
title | Biophysical feedback mediates effects of invasive grasses on coastal dune shape |
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