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Statements

Subject Item
n2:RIV%2F67985939%3A_____%2F12%3A00381949%21RIV13-GA0-67985939
rdf:type
n10:Vysledek skos:Concept
dcterms:description
We aim to identify the best way to quantify the level of invasion by nonnative animals and plants by reviewing the advantages and disadvantages of different metrics. We recommend two invasion indices and illustrate their use by applying them to two case studies. Relative alien species richness and relative alien species abundance indicate the contribution that alien species make to a community. They are easy to measure, can be applied to various taxa, are independent of scale and are comparable across regions and ecosystems, and historical data are often available. The relationship between relative alien richness and abundance can indicate the presence of dominant alien species and the trajectory of invasion over time, and can highlight ecosystems and sites that are heavily invaded or especially susceptible to invasion. Establishing standard, transparent ways to define and quantify invasion level will facilitate meaningful comparisons among studies, ecosystem types and regions. We aim to identify the best way to quantify the level of invasion by nonnative animals and plants by reviewing the advantages and disadvantages of different metrics. We recommend two invasion indices and illustrate their use by applying them to two case studies. Relative alien species richness and relative alien species abundance indicate the contribution that alien species make to a community. They are easy to measure, can be applied to various taxa, are independent of scale and are comparable across regions and ecosystems, and historical data are often available. The relationship between relative alien richness and abundance can indicate the presence of dominant alien species and the trajectory of invasion over time, and can highlight ecosystems and sites that are heavily invaded or especially susceptible to invasion. Establishing standard, transparent ways to define and quantify invasion level will facilitate meaningful comparisons among studies, ecosystem types and regions.
dcterms:title
Quantifying levels of biological invasion: towards the objective classification of invaded and invasible ecosystems Quantifying levels of biological invasion: towards the objective classification of invaded and invasible ecosystems
skos:prefLabel
Quantifying levels of biological invasion: towards the objective classification of invaded and invasible ecosystems Quantifying levels of biological invasion: towards the objective classification of invaded and invasible ecosystems
skos:notation
RIV/67985939:_____/12:00381949!RIV13-GA0-67985939
n10:predkladatel
n11:ico%3A67985939
n3:aktivita
n9:Z n9:P n9:I
n3:aktivity
I, P(GAP505/11/1112), Z(AV0Z60050516), Z(MSM0021620828)
n3:cisloPeriodika
1
n3:dodaniDat
n4:2013
n3:domaciTvurceVysledku
n19:5838541
n3:druhVysledku
n18:J
n3:duvernostUdaju
n5:S
n3:entitaPredkladatele
n16:predkladatel
n3:idSjednocenehoVysledku
163795
n3:idVysledku
RIV/67985939:_____/12:00381949
n3:jazykVysledku
n14:eng
n3:klicovaSlova
level of invasion; standard metrics; abundance
n3:klicoveSlovo
n13:abundance n13:standard%20metrics n13:level%20of%20invasion
n3:kodStatuVydavatele
GB - Spojené království Velké Británie a Severního Irska
n3:kontrolniKodProRIV
[C93AA1907959]
n3:nazevZdroje
Global Change Biology
n3:obor
n12:EF
n3:pocetDomacichTvurcuVysledku
1
n3:pocetTvurcuVysledku
4
n3:projekt
n17:GAP505%2F11%2F1112
n3:rokUplatneniVysledku
n4:2012
n3:svazekPeriodika
18
n3:tvurceVysledku
Catford, J. A Vesk, P. A. Pyšek, Petr Richardson, D. M.
n3:wos
000298598900005
n3:zamer
n6:AV0Z60050516 n6:MSM0021620828
s:issn
1354-1013
s:numberOfPages
19
n20:doi
10.1111/j.1365-2486.2011.02549.x