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GEO 31/03/21 En 50 ans, les espèces envahissantes auraient coûté plus de 1000 milliards d'euros à l'humanité. Changement climatique, modification des habitats, pollution, surexploitation,...

GEO 31/03/21 En 50 ans, les espèces envahissantes auraient coûté plus de 1000 milliards d'euros à l'humanité

La biodiversité mondiale fait face à de nombreuses pressions qui menacent son avenir. Mais certaines sont plus méconnues et sous-estimées que d'autres. C'est le cas des espèces exotiques envahissantes. Ce terme désigne des espèces introduites, volontairement ou non, par l’humain dans un milieu où elles ne sont normalement pas présentes. Un milieu où elles se développent jusqu'à devenir nuisibles à l'écosystème local. Ces invasions biologiques constituent l'une des principales causes de déclin de la biodiversité à travers le monde.

Estimer le coût des invasions biologiques Une étude publiée dans la revue Nature apporte aujourd'hui un nouvel éclairage sur l'impact de ce phénomène. "Il s'est finalement avéré que notre approche très conservatrice était une grande sous-estimation des coûts économiques réels", a poursuivi dans un communiqué le premier auteur de l'étude. 20MINUTES 31/03/21 Santé, agriculture, pêche, immobilier… Des chercheurs pointent le coût économique gigantesque des espèces invasives. Le moustique tigre, la fourmi de feu, le lapin en Australie, le chat sur certaines îles… Bon nombre d’espèces peuvent engendrer des dégâts considérables dans les milieux où elles ont été introduites, volontairement ou non, par l’Homme.

20MINUTES 31/03/21 Santé, agriculture, pêche, immobilier… Des chercheurs pointent le coût économique gigantesque des espèces invasives

Ces espèces invasives sont la deuxième cause d’extinction d’espèces dans le monde. Mais leurs impacts ne sont pas qu’écologiques. Des scientifiques du CNRS, de l’IRD et du Museum d’Histoire naturelle ont cherché à estimé le coût économique qu’elles engendrent. Leur étude, publiée ce mercredi dans Nature, arrive à un coût estimé de 1.288 milliards de dollars entre 1970 et 2017. Un chiffre très certainement en deçà de la réalité, en conviennent les chercheurs, ces pertes étant encore peu reportées. NATURE 04/10/16 Massive yet grossly underestimated global costs of invasive insects. Literature review We began our review of the literature on the economic impacts of invasive insects using the ISI Web of Science database with a specific search string to identify relevant papers (see below).

NATURE 04/10/16 Massive yet grossly underestimated global costs of invasive insects

We then used the Web of Science’s ‘refine’ function to restrict the studies identified to the relevant fields, yielding 488 sources from 1911 to January 2014. We analysed each source to reject irrelevant papers and retained those containing economic estimates. We completed our database with 267 relevant studies up to December 2015 (including grey literature) opportunistically gathered. NATUREZA & CONSERVACAO 06/04/15 Current distribution of invasive feral pigs in Brazil: economic impacts and ecological uncertainty. Biological Invasions 16/03/17 Economics of invasive species policy and management.

Interventions to mitigate the impacts of invasive species include reducing the rate of invasive species introduction (prevention), eradicating new invader populations, and reducing damages by slowing the spread of invasions across the landscape or adapting to an invader’s presence through control or altered management practices.1 In addition, monitoring is key to most invasion mitigation strategies—for knowing what and where to control and for evaluating the effectiveness of management actions.

Biological Invasions 16/03/17 Economics of invasive species policy and management

Economic analyses often aim to optimize prevention, control, or monitoring investments to minimize the total costs and damages resulting from invasion impacts and management. Such analyses must account for the multifaceted trade-offs among economic activities, species impacts, and control interventions, as well as the underlying dynamics of biological invaders that make their management and analysis particularly complex. Invasion prevention Early detection and monitoring surveillance. NATURE 04/10/16 Massive yet grossly underestimated global costs of invasive insects.

Literature review We began our review of the literature on the economic impacts of invasive insects using the ISI Web of Science database with a specific search string to identify relevant papers (see below).

NATURE 04/10/16 Massive yet grossly underestimated global costs of invasive insects

We then used the Web of Science’s ‘refine’ function to restrict the studies identified to the relevant fields, yielding 488 sources from 1911 to January 2014. We analysed each source to reject irrelevant papers and retained those containing economic estimates. We completed our database with 267 relevant studies up to December 2015 (including grey literature) opportunistically gathered. WILDLIFE - OCT 2013 - Invasives: The High Cost of Indifference.

Diversity 2014, 6, 500-523 Economics of Harmful Invasive Species: A Review. Adirondack Park Invasive Plant Program (NYC) - NOV 2014 - The Actual and Potential Economic Impact of Invasive Species on the Adirondack Park: A Preliminary Assessment. SAM HOUSTON STATE UNIVERSITY 10/12/14 Predicting the Total Economic Impacts of Invasive Species: The Case of the Red Streaked Leafhopper. Brian D.

SAM HOUSTON STATE UNIVERSITY 10/12/14 Predicting the Total Economic Impacts of Invasive Species: The Case of the Red Streaked Leafhopper

Piper. MICHIGAN STATE UNIVERSITY 27/07/15 Invasive species are costly in economic and ecological damage, further introductions must be avoided. A new grant project at MSU hopes to provide a better network for tracking and pinpointing possible new invasive introductions early before these invasive species get a solid foothold in Michigan.

MICHIGAN STATE UNIVERSITY 27/07/15 Invasive species are costly in economic and ecological damage, further introductions must be avoided

Posted on July 27, 2015 by Deb McCullough, Michigan State University Extension, Department of Entomology The negative consequences of invasive species in the United States, including plants, animals, insects, pathogens and other organisms, are staggering. Effects of these unwanted, foreign invaders range from enormous economic costs to profound changes in our native ecosystems. Invasive insect pests, for example, can affect human health, agricultural production, aquatic and forest systems, property values and outdoor recreation. Native insect species may be outcompeted or displaced by invaders. Recent estimates show economic costs of invasive forest insects in the U.S. exceed $4 billion annually. This article was published by Michigan State University Extension. Related Articles. Ecological Economics 70 (2010) 86–95 A spatial-dynamic value transfer model of economic losses from a biological invasion.

Proc Natl Acad Sci U S A. 2011 January 4; 108(1): 203–207. Socioeconomic legacy yields an invasion debt. FWS_GOV - JANV 2012 - The Cost of Invasive Species.