Predicting invasion in grassland ecosystems: is exotic dominance the real embarrassment of richness?

doi:10.1111/gcb.12370

NWIPB OpenIR

	Predicting invasion in grassland ecosystems: is exotic dominance the real embarrassment of richness?
	Seabloom, Eric W.1; Borer, Elizabeth T.1; Buckley, Yvonne 2; Cleland, Elsa E.3; Davies, Kendi 4; Firn, Jennifer 5; Harpole, W. Stanley 6; Hautier, Yann 1,7; Lind, Eric 1; Macdougall, Andrew 8; Orrock, John L.9; Prober, Suzanne M.10; Adler, Peter 11,12; Alberti, Juan 13; Anderson, T. Michael 14; Bakker, Jonathan D.15; Biederman, Lori A.6; Blumenthal, Dana 16; Brown, Cynthia S.17; Brudvig, Lars A.18; Caldeira, Maria 19; Chu, Chengjin 20; Crawley, Michael J.21; Daleo, Pedro 13; Damschen, Ellen I.9; D'Antonio, Carla M.22; Decrappeo, Nicole M.23; Dickman, Chris R.24; Du, Guozhen 20; Fay, Philip A.25; Frater, Paul 6; Gruner, Daniel S.26; Hagenah, Nicole 27,28; Hector, Andrew 7; Helm, Aveliina 29; Hillebrand, Helmut 30; Hofmockel, Kirsten S.6; Humphries, Hope C.31; Iribarne, Oscar 13; Jin, Virginia L.32; Kay, Adam 33; Kirkman, Kevin P.27; Klein, Julia A.34; Knops, Johannes M. H.35; La Pierre, Kimberly J.28; Ladwig, Laura M.36; Lambrinos, John G.37; Leakey, Andrew D. B.38,39; Li, Qi40 ; Li, Wei 41; Mcculley, Rebecca 42; Melbourne, Brett 4; Mitchell, Charles E.43; Moore, Joslin L.44; Morgan, John 45; Mortensen, Brent 6; O'Halloran, Lydia R.46; Paertel, Meelis 29; Pascual, Jesus 13; Pyke, David A.23; Risch, Anita C.47; Salguero-Gomez, Roberto 2; Sankaran, Mahesh 48; Schuetz, Martin 47; Simonsen, Anna 49; Smith, Melinda 50; Stevens, Carly 51; Sullivan, Lauren 6; Wardle, Glenda M.24; Wolkovich, Elizabeth M.52; Wragg, Peter D.1; Wright, Justin 53; Yang, Louie 54; Seabloom, EW (reprint author), Univ MN, Dept Ecol Evolut & Behav, St Paul, MN 55108 USA.
	2013-12-01
发表期刊	GLOBAL CHANGE BIOLOGY
ISSN	1354-1013
卷号	19 期号:12 页码:3677-3687
文章类型	Article
摘要	Invasions have increased the size of regional species pools, but are typically assumed to reduce native diversity. However, global-scale tests of this assumption have been elusive because of the focus on exotic species richness, rather than relative abundance. This is problematic because low invader richness can indicate invasion resistance by the native community or, alternatively, dominance by a single exotic species. Here, we used a globally replicated study to quantify relationships between exotic richness and abundance in grass-dominated ecosystems in 13 countries on six continents, ranging from salt marshes to alpine tundra. We tested effects of human land use, native community diversity, herbivore pressure, and nutrient limitation on exotic plant dominance. Despite its widespread use, exotic richness was a poor proxy for exotic dominance at low exotic richness, because sites that contained few exotic species ranged from relatively pristine (low exotic richness and cover) to almost completely exotic-dominated ones (low exotic richness but high exotic cover). Both exotic cover and richness were predicted by native plant diversity (native grass richness) and land use (distance to cultivation). Although climate was important for predicting both exotic cover and richness, climatic factors predicting cover (precipitation variability) differed from those predicting richness (maximum temperature and mean temperature in the wettest quarter). Herbivory and nutrient limitation did not predict exotic richness or cover. Exotic dominance was greatest in areas with low native grass richness at the site- or regional-scale. Although this could reflect native grass displacement, a lack of biotic resistance is a more likely explanation, given that grasses comprise the most aggressive invaders. These findings underscore the need to move beyond richness as a surrogate for the extent of invasion, because this metric confounds monodominance with invasion resistance. Monitoring species' relative abundance will more rapidly advance our understanding of invasions.; Invasions have increased the size of regional species pools, but are typically assumed to reduce native diversity. However, global-scale tests of this assumption have been elusive because of the focus on exotic species richness, rather than relative abundance. This is problematic because low invader richness can indicate invasion resistance by the native community or, alternatively, dominance by a single exotic species. Here, we used a globally replicated study to quantify relationships between exotic richness and abundance in grass-dominated ecosystems in 13 countries on six continents, ranging from salt marshes to alpine tundra. We tested effects of human land use, native community diversity, herbivore pressure, and nutrient limitation on exotic plant dominance. Despite its widespread use, exotic richness was a poor proxy for exotic dominance at low exotic richness, because sites that contained few exotic species ranged from relatively pristine (low exotic richness and cover) to almost completely exotic-dominated ones (low exotic richness but high exotic cover). Both exotic cover and richness were predicted by native plant diversity (native grass richness) and land use (distance to cultivation). Although climate was important for predicting both exotic cover and richness, climatic factors predicting cover (precipitation variability) differed from those predicting richness (maximum temperature and mean temperature in the wettest quarter). Herbivory and nutrient limitation did not predict exotic richness or cover. Exotic dominance was greatest in areas with low native grass richness at the site- or regional-scale. Although this could reflect native grass displacement, a lack of biotic resistance is a more likely explanation, given that grasses comprise the most aggressive invaders. These findings underscore the need to move beyond richness as a surrogate for the extent of invasion, because this metric confounds monodominance with invasion resistance. Monitoring species' relative abundance will more rapidly advance our understanding of invasions.
WOS标题词	Science & Technology ; Life Sciences & Biomedicine
DOI	10.1111/gcb.12370
关键词[WOS]	BIOLOGICAL INVASIONS ; PLANT INVASIONS ; UNITED-STATES ; SPECIES INVASIONS ; COMMUNITIES ; COMPETITION ; CALIFORNIA ; PATTERNS ; IMPACTS ; CONSERVATION
收录类别	SCI
语种	英语
项目资助者	Nutrient Network ; National Science Foundation Research Coordination Network(NSF-DEB-1042132) ; Long Term Ecological Research program(NSF-DEB-1234162) ; Institute on the Environment(DG-0001-13)
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
WOS类目	Biodiversity Conservation ; Ecology ; Environmental Sciences
WOS记录号	WOS:000326836000011
引用统计	被引频次：68[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://210.75.249.4/handle/363003/3896
专题	中国科学院西北高原生物研究所
通讯作者	Seabloom, EW (reprint author), Univ MN, Dept Ecol Evolut & Behav, St Paul, MN 55108 USA.
作者单位	1.Univ MN, Dept Ecol Evolut & Behav, St Paul, MN 55108 USA 2.Univ Queensland, Sch Biol Sci, ARC Ctr Excellence Environm Decis, Brisbane, Qld 4072, Australia 3.Univ Calif San Diego, Ecol Behav & Evolut Sect, San Diego, CA 92093 USA 4.Univ Colorado, Dept Ecol & Evolutionary Biol, Boulder, CO 80309 USA 5.Queensland Univ Technol, Brisbane, Qld 4000, Australia 6.Iowa State Univ, Dept Ecol Evolut & Organismal Biol, Ames, IA 50011 USA 7.Univ Zurich, Inst Evolutionary Biol & Environm Studies, CH-8057 Zurich, Switzerland 8.Univ Guelph, Dept Integrat Biol, Guelph, ON N1G 2W1, Canada 9.Univ Wisconsin, Dept Zool, Madison, WI 53706 USA 10.CSIRO Ecosyst Sci, Wembley, WA 6913, Australia 11.Utah State Univ, Dept Wildland Resources, Logan, UT 84322 USA 12.Utah State Univ, Ctr Ecol, Logan, UT 84322 USA 13.Inst Invest Marinas & Costeras UNMdP CONICET, Mar Del Plata, Argentina 14.Wake Forest Univ, Dept Biol, Winston Salem, NC 27109 USA 15.Univ Washington, Sch Environm & Forest Sci, Seattle, WA 98195 USA 16.USDA ARS, Rangeland Resources Res Unit, Ft Collins, CO 80526 USA 17.Colorado State Univ, Dept Bioagr Sci & Pest Management, Ft Collins, CO 80523 USA 18.Michigan State Univ, Dept Plant Biol, E Lansing, MI 48824 USA 19.Univ Tecn Lisboa, Inst Super Agron, Ctr Estudos Florestais, P-1100 Lisbon, Portugal 20.Lanzhou Univ, Sch Life Sci, Lanzhou 730000, Peoples R China 21.Univ London Imperial Coll Sci Technol & Med, Dept Biol, Ascot SL5 7PY, Berks, England 22.Univ Calif Santa Barbara, Dept Ecol Evolut & Marine Biol, Santa Barbara, CA 93106 USA 23.US Geol Survey, Forest & Rangeland Ecosyst Sci Ctr, Corvallis, OR 97331 USA 24.Univ Sydney, Sch Biol Sci, Desert Ecol Res Grp, Sydney, NSW 2006, Australia 25.USDA ARS, Grassland Soil & Water Res Lab, Temple, TX 76502 USA 26.Univ Maryland, Dept Entomol, College Pk, MD 20742 USA 27.Univ KwaZulu Natal, Sch Life Sci, ZA-3209 Pietermaritzburg, South Africa 28.Yale Univ, Dept Ecol, New Haven, CT 06520 USA 29.Univ Tartu, Inst Ecol & Earth Sci, EE-50090 Tartu, Estonia 30.Carl von Ossietzky Univ Oldenburg, Inst Chem & Biol Marine Environm, Wilhelmshaven, Germany 31.Univ Colorado, INSTAAR, Boulder, CO 80309 USA 32.USDA ARS, Agroecosyst Management Res Unit, Lincoln, NE 68583 USA 33.Univ St Thomas, Dept Biol, St Paul, MN 55105 USA 34.Colorado State Univ, Dept Forest Rangeland & Watershed Stewardship, Ft Collins, CO 80523 USA 35.Univ Nebraska, Sch Biol Sci, Lincoln, NE 68588 USA 36.Univ New Mexico, Dept Biol, Albuquerque, NM 87103 USA 37.Oregon State Univ, Dept Hort, Corvallis, OR 97331 USA 38.Univ Illinois, Dept Plant Biol, Urbana, IL 61801 USA 39.Univ Illinois, Inst Genom Biol, Urbana, IL 61801 USA 40.Chinese Acad Sci, Northwest Inst Plateau Biol, Key Lab Adaptat & Evolut Plateau Biota, Xining 810008, Qinghai, Peoples R China 41.Southwest Forestry Univ, Yunnan Acad Biodivers, Kunming 650224, Peoples R China 42.Univ Kentucky, Dept Plant & Soil Sci, Lexington, KY 40546 USA 43.Univ N Carolina, Dept Biol, Chapel Hill, NC 27599 USA 44.Univ Melbourne, Sch Bot, Australian Res Ctr Urban Ecol, Melbourne, Vic 3010, Australia 45.La Trobe Univ, Dept Bot, Bundoora, Vic 3086, Australia 46.Oregon State Univ, Dept Zool, Corvallis, OR 97331 USA 47.Swiss Fed Inst Forest Snow & Landscape Res, CH-8903 Birmensdorf, Switzerland 48.Natl Ctr Biol Sci, Bangalore 560065, Karnataka, India 49.Univ Toronto, Dept Ecol & Evolutionary Biol, Toronto, ON M5S 3B2, Canada 50.Colorado State Univ, Dept Biol, Ft Collins, CO 80523 USA 51.Univ Lancaster, Lancaster Environm Ctr, Lancaster LA1 4YQ, England 52.Univ British Columbia, Biodivers Res Ctr, Vancouver, BC V6T 1Z4, Canada 53.Duke Univ, Dept Biol, Durham, NC 27708 USA 54.Univ Calif Davis, Dept Entomol, Davis, CA 95616 USA
推荐引用方式 GB/T 7714	Seabloom, Eric W.,Borer, Elizabeth T.,Buckley, Yvonne,et al. Predicting invasion in grassland ecosystems: is exotic dominance the real embarrassment of richness?[J]. GLOBAL CHANGE BIOLOGY,2013,19(12):3677-3687.
APA	Seabloom, Eric W..,Borer, Elizabeth T..,Buckley, Yvonne.,Cleland, Elsa E..,Davies, Kendi.,...&Seabloom, EW .(2013).Predicting invasion in grassland ecosystems: is exotic dominance the real embarrassment of richness?.GLOBAL CHANGE BIOLOGY,19(12),3677-3687.
MLA	Seabloom, Eric W.,et al."Predicting invasion in grassland ecosystems: is exotic dominance the real embarrassment of richness?".GLOBAL CHANGE BIOLOGY 19.12(2013):3677-3687.

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