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European Ornamental Garden Flora As an Invasion Debt Under Climate Change

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European Ornamental Garden Flora As an Invasion Debt Under Climate Change Erschienen in: Journal of Applied Ecology ; 55 (2018), 5. - S. 2386-2395. https://dx.doi.org/10.1111/1365-2664.13197 European ornamental garden flora as an invasion debt under climate change Emily Haeuser1,2 Պ|Պ)-m; -vom3 Պ|Պ)bѴ=ub;7$_bѴѴ;u4 Պ|Պ"|;=-m ѴѴbm];u5 Պ|Պ ";mf-Ѵo1h6 Պ|ՊѴb;uovv7ou=6 Պ|Պ-u|--u0omb4 Պ|Պbv-om|b7 Պ|Պ om- ѴѴbm];u5,8Պ|Պ u-m vvѴ5 Պ|Պুm|_;uѴomm;u5 Պ|Պ b;|l-uov;u5 Պ|Պ $-l-u-ুmh;lুѴѴ;u4Պ|Պ-7-Ѵbm-u;r-6Պ|Պ-||_;(ĺ$-ѴѴ|o4 Պ|ՊoѴ];uu;=|9 Պ|Պ -m;u]Ѵ10 Պ|Պ;|u঍;h10,11 Պ|Պ-|ub1h);b];Ѵ|9 Պ|Պ-u|;m)bm|;u12 Պ|Պ-u|bm Hermy13 Պ|Պ";0-v|b--m(-m7;u(;h;m14Պ|Պubv|bm-!ot;|4 Պ|Պ-uh-mѴ;m;m2,15 1boѴo]ķ"-m b;]o"|-|;&mb;uvb|ķ"-m b;]oķ-Ѵb=oumb-ĸ2 ;r-u|l;m|o=boѴo]ķ&mb;uvb|o=omv|-mķomv|-mķ;ul-mĸ3omv;u-|bom 1oѴo] uorķ ;r-u|l;m|o=bov1b;m1;vķ u_-l&mb;uvb|ķ u_-lķ&ĸƓ Ŋ-0ou-|obu;7Ľ 1oѴo]b;Ѵrbm;ķ!"ķ&mbĺ"-ob;om|ŊѴ-m1ķ&mbĺu;mo0Ѵ; Ѵr;vķu;mo0Ѵ;ķ u-m1;ĸ5o|-m-m7bo7b;uvb|!;v;-u1_ķ -1Ѵ|o=b=;"1b;m1;vķ&mb;uvb|o=(b;mm-ķ(b;mm-ķv|ub-ĸ6mv|b||;o= oѴ|bomş -1Ѵ|o="1b;m1;vķ&mb;uvb|o="o|_o_;lb-ķݭ;vh࣐7࣒fob1;ķ ;r-u|l;m|o=o|-mķ 1oѴo]ķ&mb;uvb|o=$ু0bm];mķ$ু0bm];mķ;ul-mĸ7 ;1_!;r0Ѵb1ĸ8mv|b||;o="o1b-Ѵ 1oѴo]ķ -1Ѵ|=oum|;u7bv1brѴbm-u"|7b;vķѴrv7ub-&mb;uvb|ķ(b;mm-ķv|ub-ĸ9bo7b;uvb|ķ-1uo;1oѴo]-m7 bo];o]u-r_ķ&mb;uvb|o=o;||bm];mķक़||bm];mķ;ul-mĸ10 ;r-u|l;m|o=m-vbom 1oѴo]ķmv|b||;o=o|-mķ$_;;1_1-7;lo="1b;m1;vķ uৄ_omb1;ķ;1_!;r0Ѵb1ĸ11 ;r-u|l;m|o= 1oѴo]ķ -1Ѵ|o="1b;m1;ķ_-uѴ;v&mb;uvb|ķu-];ķ;1_!;r0Ѵb1ĸ12;ul-m;m|u;=oum|;]u-|b; bo7b;uvb|!;v;-u1_ķ-ѴѴ;Ŋ;m-Ŋ;brb]ķ;brb]ķ;ul-mĸ13 bbvbomo= ou;v|ķ-|u;-m7-m7v1-r;ķ ;r-u|l;m|o= -u|_ş mbuoml;m|-Ѵ"1b;m1;vķ& Leuven, Leuven, Belgium; ƐƓ!;]bom--Ѵ-m7v1_-rѴ;bm;;muo|;;|;ķ-v|;uѴ;;ķ;Ѵ]bl-m715,_;fb-m]uobm1b-Ѵ;-0ou-|ouo=Ѵ-m| oѴ|bom-u 1oѴo]-m7omv;u-|bomķ$-b_o&mb;uvb|ķ$-b_oķ_bm- ouu;vrom7;m1; lbѴ-;v;uķboѴo]ķ"-m b;]o"|-|; Abstract &mb;uvb|ķ"-m b;]oķĺ Ɛĺ ov| m-|u-Ѵbv;7 -m7 bm-vb; -Ѵb;m rѴ-m| vr;1b;v ;u; oub]bm-ѴѴbm|uo71;7|o l-bѴĹ;_-;v;uŠv7vĺ;7 u;]bomv=ou_ou|b1Ѵ|u-Ѵrurov;vĺo;;uķl-mu;]bomvmo=-1;-mbm-vbom 7;0|=uoloum-l;m|-Ѵ-Ѵb;mvr;1b;vķ_b1__-;mo|;|m-|u-Ѵbv;7ĺm|_bvu;]-u7ķ 1Ѵbl-|;1_-m];u;ru;v;m|v-|_u;-|-vb|l-Ѵo;u|_;0-uub;uv|om-|u-Ѵbv-|bom =ouvol;oum-l;m|-Ѵ-Ѵb;mvr;1b;vĺ7;m|b=bm]|_ov;vr;1b;vbv;|u;l;Ѵblrou- |-m|=ou-m|b1br-|bm]blr;m7bm]bm-vbomvĺ Ƒĺ $ob7;m|b=ru;7b1|ouvo=m-|u-Ѵbv-|bomķ;lo7;ѴѴ;7|_;;==;1|vo=1Ѵbl-|;ķmuv- ;u--bѴ-0bѴb|-m7vr;1b;v1_-u-1|;ubv|b1vom|_;1uu;m| uor;-mm-|u-Ѵbv-|bom v11;vvo=ƑķƏƕƒoum-l;m|-Ѵ-Ѵb;mv1ollomѴrѴ-m|;7bm uor;-m]-u7;mvĺ); |_;mv;7|_;u;vѴ|bm]lo7;Ѵ|o];|_;ub|_1Ѵbl-|;ruof;1|bomv=ouƑƏƔƏ|o=ou;- 1-v|=|u;m-|u-Ѵbv-|bomubvhv=ou|_;ƐķƔѶƒvr;1b;vmo|;|m-|u-Ѵbv;7bm uor;ĺ ƒĺ );=om7|_-|momŊ uor;-mm-|u-Ѵbv;7u-m];vb;ķ1Ѵbl-|b1vb|-0bѴb|ķruor-]Ѵ; ru;vvu;ķ_-bm]-7bo;1bovv;-Ѵvv|;l-m7rѴ-m|_;b]_|fobm|Ѵ;rѴ-bm;71u- u;m|m-|u-Ѵbv-|bomv11;vvbm uor;ĺƑƏƔƏķm-|u-Ѵbv-|bomruo0-0bѴb|ruof;1- |bomvbm1u;-v;70lou;|_-mƏĺƐ=ouƓƐvr;1b;vķ-m7omѴ7;1u;-v;70lou;|_-m ƏĺƐ=ouom;vr;1b;vĺ Ɠĺ Policy implications.&vbm]ru;7b1|bomv0-v;7omoubm|;]u-|;7lo7;Ѵo=-Ѵb;moum-- l;m|-Ѵm-|u-Ѵbv-|bomv11;vvķ;b7;m|b=b;7vr;1b;vb|__b]_=|u;m-|u-Ѵbv-- |bomubvh-m7vr;1b;vb|__b]_ruof;1|;7bm1u;-v;vbmm-|u-Ѵbv-|bomro|;m|b-Ѵbm Konstanzer Online-Publikations-System (KOPS) URL: http://nbn-resolving.de/urn:nbn:de:bsz:352-2-1sosdlh5c1ph79 ƑƒѶƕ uor;m7;u1Ѵbl-|;1_-m];ĺ$_bvvr;1b;vѴbv|-ѴѴov=ouruboub|bv-|bomo=lomb|ou- bm]-m7u;]Ѵ-|bomo=oum-l;m|-ѴrѴ-m|v|olb|b]-|;|_;bm-vbom7;0|ĺ +)! 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    Special Issue 6 20 June 2008 Naturalised species may hold key to managing invasive aliens Alien species, introduced outside their natural range, can become invasive with the potential to cause damage to the ecosystem of the invaded area. Researchers have suggested that more intercontinental collaboration and funding could provide needed research on under- studied countries and ‘naturalised’ species across the world. Invasion biologists are particularly concerned with understanding the common principles that determine how introduced species turn into invasive species. Such information could be used to develop more effective policies to control invasions. However, researchers suggest that there are important knowledge gaps, as not all invasive species have been thoroughly studied and some geographic areas have received little research attention. The study1 found a clear bias towards research on North American and European species. Almost half of all invasive species studied were in North America. Fewer studies have been conducted in Australasia and on oceanic islands, although these areas contain high numbers of naturalised species. An alien species may become naturalised if it forms populations that can survive without human-help. However, it may not yet be ‘invasive’. To be classified as invasive, a species must adapt to overcome barriers in the new environment, such as, for example, a lack of its natural food source or dispersal agents. Naturalisation is therefore an important intermediary stage in the invasion process. Except in South Africa, relatively few detailed studies have been conducted in Asia and Africa, although these regions have many naturalised species. The researchers suggest that thorough studies from a wide variety of habitats around the world are important, because different processes may determine whether species become naturalised in different regions.
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  • Naturalised Plants Transform the Composition and Function of the New Zealand flora
    Biol Invasions (2021) 23:351–366 https://doi.org/10.1007/s10530-020-02393-4 (0123456789().,-volV)( 0123456789().,-volV) ALIEN FLORAS AND FAUNAS 7 Naturalised plants transform the composition and function of the New Zealand flora A.J. Brandt . P.J. Bellingham . R.P. Duncan . T.R. Etherington . J.D. Fridley . C.J. Howell . P.E. Hulme . I. Jo . M.S. McGlone . S.J. Richardson . J.J. Sullivan . P.A. Williams . D.A. Peltzer Received: 16 March 2020 / Accepted: 15 October 2020 / Published online: 29 October 2020 Ó Springer Nature Switzerland AG 2020 Abstract The New Zealand flora has a high propor- strategy. The 1798 species in the naturalised flora tion of endemic species but has been invaded by currently comprise 43.9% of the total number of almost the same number of non-native plant species. vascular plant species, and add 67 plant families and To support management of invasive plant species, we 649 genera to the total vascular flora. The naturalised provide an updated inventory of New Zealand’s flora has a greater proportion of herbaceous species naturalised flora and compare it with the native flora and annual species than the native flora, which could to identify key taxonomic and functional distinctions. influence ecosystem processes such as decomposition We also assess how the naturalised flora may impact and nutrient cycling. Naturalised trees have higher leaf ecosystem processes differently than the native flora nitrogen concentration for a given leaf area than native using functional traits related to plant resource use trees, which could increase rates of nutrient cycling in invaded forest ecosystems.
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  • Rethinking Biological Invasion Jonah H
    The White Horse Press Full citation: Johnson, Sarah, ed. Bioinvaders. Themes in Environmental History series. Cambridge: The White Horse Press, 2010. http://www.environmentandsociety.org/node/2811. Rights: All rights reserved. © The White Horse Press 2010. Except for the quotation of short passages for the purpose of criticism or review, no part of this book may be reprinted or reproduced or utilised in any form or by any electronic, mechanical or other means, including photocopying or recording, or in any information storage or retrieval system, without permission from the publishers. For further information please see http://www.whpress.co.uk. Bioinvaders Copyright © The White Horse Press 2010 First published 2010 by The White Horse Press, 10 High Street, Knapwell, Cambridge, CB23 4NR, UK Set in 10 point Times All rights reserved. Except for the quotation of short passages for the purpose of criticism or review, no part of this book may be reprinted or reproduced or utilised in any form or by any electronic, mechanical or other means, in- cluding photocopying or recording, or in any information storage or retrieval system, without permission from the publishers. British Library Cataloguing in Publication Data A catalogue record for this book is available from the British Library ISBN 978-1-874267-55-3 (PB) Contents Publisher’s Introduction Sarah Johnson iv Strangers in a Strange Land: The Problem of Exotic Species Mark Woods and Paul Veatch Moriarty 1 Nativism and Nature: Rethinking Biological Invasion Jonah H. Peretti 28 Exotic Species, Naturalisation, and Biological Nativism Ned Hettinger 37 Plant Transfers in Historical Perspective William Beinart and Karen Middleton 68 Weeds, People and Contested Places Neil Clayton 94 Re-writing the History of Australian Tropical Rainforests: ‘Alien Invasives’ or ‘Ancient Indigenes’? Rachel Sanderson 124 Prehistory of Southern African Forestry: From Vegetable Garden to Tree Plantation Kate B.
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  • Invasive Alien Species
    Invasive Alien Species Issue 6 June 2008 Editorial Contents Page Controlling a key threat to biodiversity Ecosystems threatened by invasive Aggressive non-native species represent a serious threat to biodiversity and are plant species a major cause of extinction globally. In Europe several invasive alien species (IAS) A recent study has demonstrated how dominate their new environments, threatening native species with extinction. For the introduction of just one invasive example, European red squirrel populations are on the brink of extinction in Italy species can have far-reaching and the UK, following the introduction of the larger American grey squirrel. consequences on entire ecosystems. 2 Furthermore, IAS come at a high cost. The American grey squirrel damages trees Which habitats are most at risk from in the UK, with huge consequences for the timber industry. Alien weeds reduce invasive species? European agricultural yields and Dutch Elm disease – caused by an introduced New research identifies nutrient-rich fungus - has devastated elm trees in the forests of central Europe. The estimated and man-made habitats as most damage and control cost of IAS amounts to nearly Euro 80 billion each year in the susceptible to invasion. 3 U.S. In Europe, costs reach Euro 9.6 billion per year, but extrapolations from this Naturalised species may hold key figure suggest that losses are nearer Euro 12.7 billion. And this is without considering to managing invasive aliens costs of major introduced pathogens, such as HIV or influenza (costing Euro 17 and Understanding how introduced 27 billion/year respectively).1 species become invasive could help This thematic issue reports recent advances in our understanding of the impacts of in the development of new control IAS and ways that we can prevent their arrival or mitigate their impacts.
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  • Ecology of the Naturalisation and Geographic Distribution of the Non-Indigenous Seed Plant Species Of
    View metadata, citation and similar papers at core.ac.uk brought to you by CORE provided by Lincoln University Research Archive Ecology of the naturalisation and geographic distribution of the non-indigenous seed plant species of New Zealand. A thesis submitted in partial fulfilment of the requirements for the Degree of Doctor of Philosophy at Lincoln University by Hazel A. W. Gatehouse Lincoln University 2008 ii iv Abstract of a thesis submitted in partial fulfilment of the requirements for the Degree of Ph.D. Ecology of the naturalisation and geographic distribution of the non- indigenous seed plant species of New Zealand. by Hazel A. W. Gatehouse The naturalisation and subsequent spread of non-indigenous plant species (NIPS) is a major problem for most regions of the world. Managing plant invasions requires greater understanding of factors that determine initial naturalisation and distribution of wild NIPS. By the year 2000, 2252 NIPS were recorded as wild (1773 fully naturalised and 479 casual) in New Zealand. From published literature and electronic herbaria records, I recorded year of discovery of wild populations, and regional distribution of these wild NIPS. I also recorded species related attributes hypothesised to affect naturalisation and/or distribution, including global trade, human activities, native range and biological data; and regional attributes hypothesised to affect distribution, including human population densities, land use/cover, and environmental data. I used interval-censored time-to-event analyses to estimate year of naturalisation from discovery records, then analysed the importance of historical, human activity, biogeographical and biological attributes in determining patterns of naturalisation. Typically, NIPS that naturalised earlier were herbaceous, utilitarian species that were also accidentally introduced and/or distributed, with a wide native range that included Eurasia, naturalised elsewhere, with a native congener in New Zealand.
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  • A Checklist of Birds of Britain (9Th Edition)
    Ibis (2018), 160, 190–240 doi: 10.1111/ibi.12536 The British List: A Checklist of Birds of Britain (9th edition) CHRISTOPHER J. MCINERNY,1,2 ANDREW J. MUSGROVE,1,3 ANDREW STODDART,1 ANDREW H. J. HARROP1 † STEVE P. DUDLEY1,* & THE BRITISH ORNITHOLOGISTS’ UNION RECORDS COMMITTEE (BOURC) 1British Ornithologists’ Union, PO Box 417, Peterborough PE7 3FX, UK 2School of Life Sciences, University of Glasgow, Glasgow G12 8QQ, UK 3British Trust for Ornithology, The Nunnery, Thetford, IP24 2PU, UK Recommended citation: British Ornithologists’ Union (BOU). 2018. The British List: a Checklist of Birds of Britain (9th edition). Ibis 160: 190–240. and the Irish Rare Birds Committee are no longer INTRODUCTION published within BOURC reports. This, the 9th edition of the Checklist of the Birds The British List is under continuous revision by of Britain, referred to throughout as the British BOURC. New species and subspecies are either List, has been prepared as a statement of the status added or removed, following assessment; these are of those species and subspecies known to have updated on the BOU website (https://www.bou. occurred in Britain and its coastal waters (Fig. 1). org.uk/british-list/recent-announcements/) at the time It incorporates all the changes to the British List of the change, but only come into effect on the List up to and including the 48th Report of the British on publication in a BOURC report in Ibis. A list of Ornithologists’ Union Records Committee the species and subspecies removed from the British (BOURC) (BOU 2018), and detailed in BOURC List since the 8th edition is shown in Appendix 1.
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  • Linking Darwin's Naturalisation Hypothesis and Elton's Diversity
    Linking Darwin’s naturalisation hypothesis and Elton’s diversity-invasibility hypothesis in experimental grassland communities Yanhao Feng, Timothée Fouqueray, Mark van Kleunen To cite this version: Yanhao Feng, Timothée Fouqueray, Mark van Kleunen. Linking Darwin’s naturalisation hypoth- esis and Elton’s diversity-invasibility hypothesis in experimental grassland communities. Journal of Ecology, Wiley, 2018, Ecological Succession in a Changing World, 107 (2), pp.794-805. 10.1111/1365- 2745.13061. hal-02457011 HAL Id: hal-02457011 https://hal.archives-ouvertes.fr/hal-02457011 Submitted on 29 Jan 2020 HAL is a multi-disciplinary open access L’archive ouverte pluridisciplinaire HAL, est archive for the deposit and dissemination of sci- destinée au dépôt et à la diffusion de documents entific research documents, whether they are pub- scientifiques de niveau recherche, publiés ou non, lished or not. The documents may come from émanant des établissements d’enseignement et de teaching and research institutions in France or recherche français ou étrangers, des laboratoires abroad, or from public or private research centers. publics ou privés. 1 Linking Darwin's naturalisation hypothesis and Elton’s diversity-invasibility 2 hypothesis in experimental grassland communities 3 Yanhao Feng*1,2,3, Timothée Donatien Fouqueray1,4 & Mark van Kleunen1,5 4 1 Ecology, Department of Biology, University of Konstanz, Universitätsstrasse 10, Konstanz, 5 78464, Germany 6 2 Department for Physiological Diversity, Helmholtz Centre for Environmental Research -
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  • Iucn Definitions English-French
    Updated: 03 May 2021 A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T, U, V, W, X, Y, Z *A* Abatement. Abatement is the word which is used to denote the result of decreased Greenhouse Gases Emission. This can also be taken as an activity to lessen the effects of Greenhouse Effect. Abiotic (factors). Non-biological (as opposed to biotic), e.g. salinity, currents, light etc. Aboveground biomass. All living biomass above the soil including the stem, stump, branches, bark, seeds and foliage is known as aboveground biomass. Absolute Humidity. The quantity of water vapour in a given volume of air expressed by mass is known as absolute humidity. Absolute Risk. A quantitative or qualitative prediction of the likelihood and significance of a given impact is known as absolute risk. In the Voluntary Carbon Standard (VCS), the level of absolute risk can be calculated using the ‘likelihood × significance’ methodology. The calculated risk can then be converted into a risk classification. Abyss. The sunless deep sea bottom, ocean basins or abyssal plain descending from 2,000m to about 6,000m. Abyssal plain. The extensive, flat, gently sloping or nearly level region of the ocean floor from about 2,000m to 6,000m depth; the upper abyssal plain (2,000–4,000m) is also often referred to as the continental rise. Acceptable risk. The level of potential losses that a society or community considers acceptable given existing social, economic, political, cultural, technical and environmental conditions is known as acceptable risk. It describes the likelihood of an event whose probability of occurrence is small, whose consequences are so slight, or whose benefits (perceived or real) are so great, that individuals or groups in society are willing to take or be subjected to the risk that the event might occur.
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  • Action on Invasive Alien Species Should Better Anticipate Climate Change Effects on Biological Invasions in Europe
    POLICY BRIEF Action on invasive alien species should better anticipate climate change effects on biological invasions in Europe Main findings Key policy recommendations Changes in climatic conditions will increase the risk of Due to changing climatic conditions, the rate of change new invasive alien species in Europe in the near future. in distribution and overall range, the risk of alien species In response to this emerging risk, BiodivERsA-funded becoming naturalised, and their potential impacts may projects propose that Invasive Alien Species policy increase. implementation by Member States and the European Commission should: BiodivERsA-funded research has quantified how climate • Include climate-distribution modelling under change determines these important components of the differentIPCC climate scenarios in horizon scanning invasion process for contrasting organisms in Europe: the to identify alien species that have the potential to African clawed frog, an alder tree pathogen, and a variety be invasive in the future due to climate change, and to screen out species with a low risk of invasion. of ornamental garden plants. • Include an assessment of the likely species range The research findings highlight the need for horizon change in Europe in response to climate change scanning to detect species that might become invasive in the risk assessment of invasive alien species identified as high priority in the EU. under future climates – whose introduction could be prevented. • Introduce an EU-wide early detection and rapid response system for alien garden plants in Europe to anticipate potential invaders under future climate scenarios. Key research results Policies should better anticipate climate change effects on biological invasions in Europe Context Invasive alien species (IAS) are species that are introduced The priority species are identified through risk assessments intentionally or accidentally to Europe, where they are carried out by the European Commission and Member one of the biggest threats to biodiversity and ecosystem States.
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  • Threats from Introduced Birds to Native Birds
    Emu 2014, 114, 1–12 © BirdLife Australia 2014 © BirdLife Australia 2014 doi:10.1071/MU12122_AC Supplementary material Threats from introduced birds to native birds Jack BakerA,B, Kerinne J. HarveyA and Kris FrenchA AInstitute for Conservation Biology and Environmental Management, University of Wollongong, NSW 2522, Australia. BCorresponding author. Email: [email protected] Page 1 of 17 Emu 2014, 114, 1–12 © BirdLife Australia 2014 doi:10.1071/MU12122_AC Table S1. Interspecific interactions between introduced and native bird species showing the type of interaction, level of evidence, outcome and whether a population-level threat was demonstrated Introduced bird Native bird as named in Location Process Level of Outcome Threat Reference reference evidence demonstrated Austral Thrush Juan Fernandez Juan Predation Anecdotal Introduced species known to be a nest No Hahn et al. (2011) (Turdus Firecrown Fernandez predator of the native species falcklandii) Archipelago Australian Silvereye New Zealand Competition – Causal Native species avoids artificial feeding site No Borowske et al. Magpie interference near introduced species (2012) (Cracticus tibicen) 20+ species including 12 New Zealand Competition – Anecdotal Introduced species seen to attack 12 native No McCaskill (1945) native species interference species Swamp Harrier New Zealand Competition – Anecdotal Introduced species makes 100+ non-contact No McIlroy (1968) interference attacks on native species White-faced Heron, Tui, New Zealand Competition – Anecdotal Introduced species attacks nests and nestlings No Moon (1956) Australasian Pipit interference of native species 45 species, including 27 New Zealand Competition – Correlative Introduced species attacks 27 native species – No Morgan et al. native species interference 33% of attacks on 45 species are fatal and (2005) Predation 25% of fatalities eaten Swamp Harrier, Sacred New Zealand Competition – Correlative Fewer native birds in the vicinity of No Morgan et al.
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  • Exotic Species, Naturalisation, and Biological Nativism
    Exotic Species, Naturalisation, and Biological Nativism NED HETTINGER Philosophy Department, College of Charleston Charleston, SC 29424, USA Email: [email protected] ABSTRACT Contrary to frequent characterisations, exotic species should not be identified as damaging species, species introduced by humans, or species originating from some other geographical location. Exotics are best characterised ecologically as species that are foreign to an ecological assemblage in the sense that they have not significantly adapted with the biota constituting that assemblage or to the local abiotic conditions. Exotic species become natives when they have ecologi- cally naturalised and when human influence over their presence in an assem- blage (if any) has washed away. Although the damaging nature and anthropo- genic origin of many exotic species provide good reasons for a negative evaluation of such exotics, even naturally-dispersing, nondamaging exotics warrant opposition. Biological nativists’ antagonism toward exotics need not be xenophobic and can be justified as a way of preserving the diversity of ecological assemblages from the homogenising forces of globalisation. Implications for Yellowstone National Park policy are explored. KEYWORDS Exotics, native, nativism, naturalisation, Yellowstone National Park ‘Invasive alien species … homogenise the diversity of creation. … Weeds – slowly, silently, almost invisibly, but steadily – spread all around us until, literally encircled, we can no longer turn our backs. The invasion is now our problem, our battle, our enemy. … [We must] act now and act as one [in order to] beat this silent enemy.’ Former U.S. Interior Secretary Bruce Babbitt (1998) Environmental Values 10 (2001): 193–224 © 2001 The White Horse Press, Cambridge, UK. 194 NED HETTINGER ‘I just hate them.
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  • Giants Invading the Tropics: the Oriental Vessel Fern, Angiopteris Evecta (Marattiaceae)
    Biol Invasions (2008) 10:1215–1228 DOI 10.1007/s10530-007-9197-7 ORIGINAL PAPER Giants invading the tropics: the oriental vessel fern, Angiopteris evecta (Marattiaceae) Maarten J. M. Christenhusz Æ Tuuli K. Toivonen Received: 26 October 2007 / Accepted: 26 November 2007 / Published online: 7 December 2007 Ó Springer Science+Business Media B.V. 2007 Abstract The Oriental vessel fern, Angiopteris species could be cultivated over a much wider range evecta (G.Forst.) Hoffm. (Marattiaceae), has its than where it currently is grown. The escape of native range in the South Pacific. This species has cultivated plants into nature is probably due to been introduced into other localities since the 18th distance from natural areas and is limited by local century and is now listed as an invasive species in ecological factors, such as soil conditions or compet- several regions (Jamaica, Hawaii and Costa Rica). itors. The predicted distribution in Asia and The purpose of our study is (1) to trace the Madagascar is similar to the native distribution of distributional history of the species, and (2) to model the entire genus Angiopteris. It can therefore be its potential future range based on climatic condi- assumed that most Angiopteris species have similar tions. The native range and the history of introduction climatic preferences, and the absence of A. evecta in are based on the existing literature and on 158 this predicted region may be due to dispersal specimens from 15 herbaria, together with field limitation. In the Americas there is no native observations. As there are taxonomic problems Angiopteris, but our climatic model predicts a vast surrounding A.
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