Rapid upwards spread of non-native plants in mountains across continents
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In: Nature Ecology and Evolution, Vol. 7, No. 3, 03.2023, p. 405-413.
Research output: Journal contributions › Journal articles › Research › peer-review
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TY - JOUR
T1 - Rapid upwards spread of non-native plants in mountains across continents
AU - Iseli, Evelin
AU - Chisholm, Chelsea
AU - Lenoir, Jonathan
AU - Haider, Sylvia
AU - Seipel, Tim
AU - Barros, Agustina
AU - Hargreaves, Anna L.
AU - Kardol, Paul
AU - Lembrechts, Jonas J.
AU - McDougall, Keith
AU - Rashid, Irfan
AU - Rumpf, Sabine B.
AU - Arévalo, José Ramón
AU - Cavieres, Lohengrin
AU - Daehler, Curtis
AU - Dar, Pervaiz A.
AU - Endress, Bryan
AU - Jakobs, Gabi
AU - Jiménez, Alejandra
AU - Küffer, Christoph
AU - Mihoc, Maritza
AU - Milbau, Ann
AU - Morgan, John W.
AU - Naylor, Bridgett J.
AU - Pauchard, Aníbal
AU - Ratier Backes, Amanda
AU - Reshi, Zafar A.
AU - Rew, Lisa J.
AU - Righetti, Damiano
AU - Shannon, James M.
AU - Valencia, Graciela
AU - Walsh, Neville
AU - Wright, Genevieve T.
AU - Alexander, Jake M.
N1 - Publisher Copyright: © 2023, The Author(s).
PY - 2023/3
Y1 - 2023/3
N2 - High-elevation ecosystems are among the few ecosystems worldwide that are not yet heavily invaded by non-native plants. This is expected to change as species expand their range limits upwards to fill their climatic niches and respond to ongoing anthropogenic disturbances. Yet, whether and how quickly these changes are happening has only been assessed in a few isolated cases. Starting in 2007, we conducted repeated surveys of non-native plant distributions along mountain roads in 11 regions from 5 continents. We show that over a 5- to 10-year period, the number of non-native species increased on average by approximately 16% per decade across regions. The direction and magnitude of upper range limit shifts depended on elevation across all regions. Supported by a null-model approach accounting for range changes expected by chance alone, we found greater than expected upward shifts at lower/mid elevations in at least seven regions. After accounting for elevation dependence, significant average upward shifts were detected in a further three regions (revealing evidence for upward shifts in 10 of 11 regions). Together, our results show that mountain environments are becoming increasingly exposed to biological invasions, emphasizing the need to monitor and prevent potential biosecurity issues emerging in high-elevation ecosystems.
AB - High-elevation ecosystems are among the few ecosystems worldwide that are not yet heavily invaded by non-native plants. This is expected to change as species expand their range limits upwards to fill their climatic niches and respond to ongoing anthropogenic disturbances. Yet, whether and how quickly these changes are happening has only been assessed in a few isolated cases. Starting in 2007, we conducted repeated surveys of non-native plant distributions along mountain roads in 11 regions from 5 continents. We show that over a 5- to 10-year period, the number of non-native species increased on average by approximately 16% per decade across regions. The direction and magnitude of upper range limit shifts depended on elevation across all regions. Supported by a null-model approach accounting for range changes expected by chance alone, we found greater than expected upward shifts at lower/mid elevations in at least seven regions. After accounting for elevation dependence, significant average upward shifts were detected in a further three regions (revealing evidence for upward shifts in 10 of 11 regions). Together, our results show that mountain environments are becoming increasingly exposed to biological invasions, emphasizing the need to monitor and prevent potential biosecurity issues emerging in high-elevation ecosystems.
KW - Biology
UR - http://www.scopus.com/inward/record.url?scp=85147126619&partnerID=8YFLogxK
UR - https://www.mendeley.com/catalogue/4d17ce2b-4f29-397d-b351-8964487f1b1e/
U2 - 10.1038/s41559-022-01979-6
DO - 10.1038/s41559-022-01979-6
M3 - Journal articles
C2 - 36702858
AN - SCOPUS:85147126619
VL - 7
SP - 405
EP - 413
JO - Nature Ecology and Evolution
JF - Nature Ecology and Evolution
SN - 2397-334X
IS - 3
ER -