{"id":17640,"date":"2026-04-09T14:29:56","date_gmt":"2026-04-09T12:29:56","guid":{"rendered":"https:\/\/ultimabozza.it\/so-alien-plants-are-invading-the-world\/"},"modified":"2026-04-09T16:41:11","modified_gmt":"2026-04-09T14:41:11","slug":"so-alien-plants-are-invading-the-world","status":"publish","type":"post","link":"https:\/\/ultimabozza.it\/en\/so-alien-plants-are-invading-the-world\/","title":{"rendered":"So alien plants are invading the world"},"content":{"rendered":"\n<p><strong>Invasive plants<\/strong> are reshaping the geography of the Planet, ready to take over new territories. <a href=\"https:\/\/www.nature.com\/articles\/s41559-026-03040-2\">New research<\/a> published in <em><strong>Nature Ecology &amp; Evolution<\/strong><\/em> warns that the phenomenon is accelerating, driven by a changing climate and increasingly pervasive human activity. But if science is drawing the boundaries of invasion, Brussels is setting those of legality, imposing drastic rules for anyone-from nurserymen to ordinary enthusiasts-to host banned species. <\/p>\n\n<h3 class=\"wp-block-heading\" id=\"h-una-mappa-che-cambia-con-il-clima\"><strong>A map that changes with climate<\/strong><\/h3>\n\n<p>The study analyzes 9,701 naturalized alien plant species and reconstructs their potential distribution on a planetary scale. The most significant finding is that already 33.9 percent of the world&#8217;s landmasses offer favorable conditions for the presence of at least 10 percent of these species. <\/p>\n\n<p>By the end of the century this share could rise to 37.7 percent, although the overall increase hides a deeper transformation. Hotspots are not just growing: they are moving. <\/p>\n\n<p>The authors explain that &#8220;the expansion will mainly affect colder regions,&#8221; while some hot and arid areas may lose some of their attractiveness. In other words, global warming is opening up new ecological spaces where invasive species today struggle to establish themselves. <\/p>\n\n<h3 class=\"wp-block-heading\" id=\"h-il-peso-dell-attivita-umana\"><strong>The burden of human activity<\/strong><\/h3>\n\n<p>Research shows a direct link between invasiveness and human presence. Areas with larger anthropogenic footprints-transportation, commerce, urbanization-are more exposed. <\/p>\n\n<p>&#8220;The global redistribution of plants has accelerated in recent decades,&#8221; the researchers note, pointing out how the movement of goods and people increases propagation pressure. One fact often overlooked: <strong>more than 16,000 plant species are already naturalized worldwide<\/strong>, but only a <strong>minority-about 6 percent-become truly invasive<\/strong>. It is that fraction that produces the greatest damage, both environmental and economic.  <\/p>\n\n<h3 class=\"wp-block-heading\" id=\"h-europa-linea-dura-sulle-specie-vietate\"><strong>Europe, hard line on banned species<\/strong><\/h3>\n\n<p>Against this backdrop, Brussels has chosen a preventive strategy. <a href=\"http:\/\/regolamento%20UE%201143\/2014\">EU Regulation 1143\/2014<\/a> has already blacklisted 88 plant species and progressively updated it. Some of the best known include<strong>ailanthus<\/strong><em>(Ailanthus altissima<\/em>), also known as the tree of paradise, <strong>glandular balsam<\/strong><em>(Impatiens glandulifera<\/em>) and the recently added <strong>water lettuce<\/strong><em>(Pistia stratiotes<\/em>). Some, such as <strong>Japan polygonum<\/strong><em>(Fallopia japonica<\/em>), are capable of damaging infrastructure through extremely aggressive root systems.   <\/p>\n\n<p>The legislation is clear: those who own these plants must remove them. <strong>Penalties can be up to 50,000 euros<\/strong>, with no extenuating circumstances related to lack of knowledge of the law.<\/p>\n\n<h3 class=\"wp-block-heading\" id=\"h-giardini-privati-sotto-osservazione\"><strong>Private gardens under observation<\/strong><\/h3>\n\n<p>The critical point remains domestic spread. Many invasive species enter gardens through fashion or unawareness: online purchases, unchecked nurseries, seeds brought from travel. Once introduced, these plants compete with local flora by stealing light, water and nutrients, to the point of compromising their survival. The result is a progressive &#8220;homogenization&#8221; of ecosystems, which has already been documented globally. Green waste management is also a key factor: <strong>improper disposal can facilitate seed dispersal and accelerate invasion<\/strong>.    <\/p>\n\n<h3 class=\"wp-block-heading\" id=\"h-prevenzione-e-scelte-consapevoli\"><strong>Prevention and informed choices<\/strong><\/h3>\n\n<p>Experts point to a simple, often overlooked line of operation: replace exotic species with native plants. It is an ecological safety measure. The new global map suggests that the problem will not spontaneously abate. On the contrary, the combination of climate change and land use will make some areas even more vulnerable. For this, the authors conclude, we need &#8220;proactive and targeted&#8221; policies that can adapt to regional differences . Less improvisation, more planning.     <\/p>\n","protected":false},"excerpt":{"rendered":"<p>According to a study published in Nature, their spread is accelerated by the climate crisis. Meanwhile, Brussels strengthens rules. Fines up to 50,000 euros if you have ailanthus in your garden  <\/p>\n","protected":false},"author":35,"featured_media":17641,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"googlesitekit_rrm_CAowscnaCw:productID":"","_app_feed_target":"","footnotes":""},"categories":[1619],"tags":[2127],"class_list":["post-17640","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ecosystems","tag-plants"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.5 (Yoast SEO v26.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>So alien plants are invading the world &#8226; Ultima Bozza<\/title>\n<meta name=\"description\" content=\"According to a study published in Nature, their spread is accelerated by the climate crisis. Meanwhile, Brussels strengthens rules. 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