What determines pine naturalization: species traits, climate suitability or forestry use?

Kirsty McGregor, Michael Watt, Philip Hulme, Richard Duncan

Research output: Contribution to journalArticle

26 Citations (Scopus)

Abstract

Aim Species attributes, biogeographic features and human factors have all been shown to discriminate between invasive and non-invasive plant species. However, the relative importance of these factors, their generality in determining invasion outcomes across different regions and their ability to discriminate success and failure at different stages of the invasion process have not been established. Location New Zealand (NZ) and Great Britain (GB). Methods For species in the genus Pinus, we used boosted regression trees to identify factors associated with success or failure at the introduction and naturalization stages in each region. Results Human factors, notably the forestry use index, were the strongest determinants of which species from the global pool were introduced to both NZ and GB. Species with a close climate match were also more likely to be introduced to NZ but not to GB. Human factors and climate match were also the strongest determinants of which introduced species became naturalized in both NZ and GB, although the order of importance differed (human factors followed by climate match for NZ and vice versa for GB). Species attributes (life-history traits and the Z-score) had much less ability to discriminate successful and failed species at both the introduction and naturalization stages in these two regions. Main conclusions We show for the first time that human factors are more important than either species or biogeographic traits in determining the likelihood of a species being introduced or becoming naturalized. The similarity between two different regions in the factors found to be important in success at both these invasions stages points to potentially general mechanisms underlying these processes. The strong human component to introduction and naturalization highlights a potential conflict between future afforestation using alien species with conservation and management aims in the surrounding landscape, given that the factors desirable for forestry species are also those that may promote invasion.
Original languageEnglish
Pages (from-to)1013-1023
Number of pages11
JournalDiversity and Distributions
Volume18
DOIs
Publication statusPublished - 2012
Externally publishedYes

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naturalization
forestry
Pinus
climate
introduced species
afforestation
life history trait
life history

Cite this

McGregor, Kirsty ; Watt, Michael ; Hulme, Philip ; Duncan, Richard. / What determines pine naturalization: species traits, climate suitability or forestry use?. In: Diversity and Distributions. 2012 ; Vol. 18. pp. 1013-1023.
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title = "What determines pine naturalization: species traits, climate suitability or forestry use?",
abstract = "Aim Species attributes, biogeographic features and human factors have all been shown to discriminate between invasive and non-invasive plant species. However, the relative importance of these factors, their generality in determining invasion outcomes across different regions and their ability to discriminate success and failure at different stages of the invasion process have not been established. Location New Zealand (NZ) and Great Britain (GB). Methods For species in the genus Pinus, we used boosted regression trees to identify factors associated with success or failure at the introduction and naturalization stages in each region. Results Human factors, notably the forestry use index, were the strongest determinants of which species from the global pool were introduced to both NZ and GB. Species with a close climate match were also more likely to be introduced to NZ but not to GB. Human factors and climate match were also the strongest determinants of which introduced species became naturalized in both NZ and GB, although the order of importance differed (human factors followed by climate match for NZ and vice versa for GB). Species attributes (life-history traits and the Z-score) had much less ability to discriminate successful and failed species at both the introduction and naturalization stages in these two regions. Main conclusions We show for the first time that human factors are more important than either species or biogeographic traits in determining the likelihood of a species being introduced or becoming naturalized. The similarity between two different regions in the factors found to be important in success at both these invasions stages points to potentially general mechanisms underlying these processes. The strong human component to introduction and naturalization highlights a potential conflict between future afforestation using alien species with conservation and management aims in the surrounding landscape, given that the factors desirable for forestry species are also those that may promote invasion.",
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What determines pine naturalization: species traits, climate suitability or forestry use? / McGregor, Kirsty; Watt, Michael; Hulme, Philip; Duncan, Richard.

In: Diversity and Distributions, Vol. 18, 2012, p. 1013-1023.

Research output: Contribution to journalArticle

TY - JOUR

T1 - What determines pine naturalization: species traits, climate suitability or forestry use?

AU - McGregor, Kirsty

AU - Watt, Michael

AU - Hulme, Philip

AU - Duncan, Richard

PY - 2012

Y1 - 2012

N2 - Aim Species attributes, biogeographic features and human factors have all been shown to discriminate between invasive and non-invasive plant species. However, the relative importance of these factors, their generality in determining invasion outcomes across different regions and their ability to discriminate success and failure at different stages of the invasion process have not been established. Location New Zealand (NZ) and Great Britain (GB). Methods For species in the genus Pinus, we used boosted regression trees to identify factors associated with success or failure at the introduction and naturalization stages in each region. Results Human factors, notably the forestry use index, were the strongest determinants of which species from the global pool were introduced to both NZ and GB. Species with a close climate match were also more likely to be introduced to NZ but not to GB. Human factors and climate match were also the strongest determinants of which introduced species became naturalized in both NZ and GB, although the order of importance differed (human factors followed by climate match for NZ and vice versa for GB). Species attributes (life-history traits and the Z-score) had much less ability to discriminate successful and failed species at both the introduction and naturalization stages in these two regions. Main conclusions We show for the first time that human factors are more important than either species or biogeographic traits in determining the likelihood of a species being introduced or becoming naturalized. The similarity between two different regions in the factors found to be important in success at both these invasions stages points to potentially general mechanisms underlying these processes. The strong human component to introduction and naturalization highlights a potential conflict between future afforestation using alien species with conservation and management aims in the surrounding landscape, given that the factors desirable for forestry species are also those that may promote invasion.

AB - Aim Species attributes, biogeographic features and human factors have all been shown to discriminate between invasive and non-invasive plant species. However, the relative importance of these factors, their generality in determining invasion outcomes across different regions and their ability to discriminate success and failure at different stages of the invasion process have not been established. Location New Zealand (NZ) and Great Britain (GB). Methods For species in the genus Pinus, we used boosted regression trees to identify factors associated with success or failure at the introduction and naturalization stages in each region. Results Human factors, notably the forestry use index, were the strongest determinants of which species from the global pool were introduced to both NZ and GB. Species with a close climate match were also more likely to be introduced to NZ but not to GB. Human factors and climate match were also the strongest determinants of which introduced species became naturalized in both NZ and GB, although the order of importance differed (human factors followed by climate match for NZ and vice versa for GB). Species attributes (life-history traits and the Z-score) had much less ability to discriminate successful and failed species at both the introduction and naturalization stages in these two regions. Main conclusions We show for the first time that human factors are more important than either species or biogeographic traits in determining the likelihood of a species being introduced or becoming naturalized. The similarity between two different regions in the factors found to be important in success at both these invasions stages points to potentially general mechanisms underlying these processes. The strong human component to introduction and naturalization highlights a potential conflict between future afforestation using alien species with conservation and management aims in the surrounding landscape, given that the factors desirable for forestry species are also those that may promote invasion.

KW - Alien species

KW - biological invasions

KW - climate match

KW - forestry

KW - Pinus

KW - propagule pressure

KW - traits

KW - weeds.

U2 - 10.1111/j.1472-4642.2012.00942.x

DO - 10.1111/j.1472-4642.2012.00942.x

M3 - Article

VL - 18

SP - 1013

EP - 1023

JO - Diversity and Distributions

JF - Diversity and Distributions

SN - 1366-9516

ER -