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Carter S, Mills C, Hao Z, Mott R, Hauser CE, White M, Sharples J, Taylor J, Moore JL. Spatial prioritization for widespread invasive species control: Trade-offs between current impact and future spread. ECOLOGICAL APPLICATIONS : A PUBLICATION OF THE ECOLOGICAL SOCIETY OF AMERICA 2024:e2982. [PMID: 38831569 DOI: 10.1002/eap.2982] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2023] [Revised: 11/16/2023] [Accepted: 01/31/2024] [Indexed: 06/05/2024]
Abstract
Spatially explicit prioritization of invasive species control is a complex issue, requiring consideration of trade-offs between immediate and future benefits. This study aimed to prioritize management efforts to account for current and future threats from widespread invasions and examine the strength of the trade-off between these different management goals. As a case study, we identified spatially explicit management priorities for the widespread invasion of introduced willow into riparian and wetland habitats across a 102,145-km2 region in eastern Australia. In addition to targeting places where willow threatens biodiversity now, a second set of management goals was to limit reinfestation and further spread that could occur via two different mechanisms (downstream and by wind). A model of likely willow distribution across the region was combined with spatial data for biodiversity (native vegetation, threatened species and communities), ecological conditions, management costs, and two potential dispersal layers. We used systematic conservation planning software (Zonation) to prioritize where willow management should be focussed across more than 100,000 catchments for a range of different scenarios that reflected different weights between management goals. For willow invasion, we found that we could prioritize willow management to reduce the future threat of dispersal downstream with little reduction in the protection of biodiversity. However, accounting for future threats from wind dispersal resulted in a stronger trade-off with protection of threatened biodiversity. The strongest trade-off was observed when both dispersal mechanisms were considered together. This study shows that considering current and future goals together offers the potential to substantially improve conservation outcomes for invasive species management. Our approach also informs land managers about the relative trade-offs among different management goals under different control scenarios, helping to make management decisions more transparent. This approach can be used for other widespread invasive species to help improve invasive species management decisions.
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Affiliation(s)
- Stephanie Carter
- School of Biological Sciences, Monash University, Clayton, Victoria, Australia
| | - Catherine Mills
- School of Biological Sciences, Monash University, Clayton, Victoria, Australia
| | - Zhenhua Hao
- School of Science, UNSW Canberra, Canberra, Australian Capital Territory, Australia
- Australian Bureau of Agricultural and Resource Economics and Sciences, Department of Agriculture, Fisheries and Forestry, Canberra, Australian Capital Territory, Australia
| | - Rowan Mott
- School of Biological Sciences, Monash University, Clayton, Victoria, Australia
| | - Cindy E Hauser
- Arthur Rylah Institute for Environmental Research, Department of Energy, Environment and Climate Action, Heidelberg, Victoria, Australia
| | - Matthew White
- Arthur Rylah Institute for Environmental Research, Department of Energy, Environment and Climate Action, Heidelberg, Victoria, Australia
| | - Jason Sharples
- School of Science, UNSW Canberra, Canberra, Australian Capital Territory, Australia
| | - John Taylor
- School of Science, UNSW Canberra, Canberra, Australian Capital Territory, Australia
| | - Joslin L Moore
- School of Biological Sciences, Monash University, Clayton, Victoria, Australia
- Arthur Rylah Institute for Environmental Research, Department of Energy, Environment and Climate Action, Heidelberg, Victoria, Australia
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2
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Britton JR. Contemporary perspectives on the ecological impacts of invasive freshwater fishes. JOURNAL OF FISH BIOLOGY 2023; 103:752-764. [PMID: 36207758 DOI: 10.1111/jfb.15240] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Accepted: 10/05/2022] [Indexed: 06/16/2023]
Abstract
Introductions of non-native freshwater fish continue to increase globally, although only a small proportion of these introductions will result in an invasion. These invasive populations can cause ecological impacts in the receiving ecosystem through processes including increased competition and predation pressure, genetic introgression and the transmission of non-native pathogens. Definitions of ecological impact emphasize that shifts in the strength of these processes are insufficient for characterizing impact alone and, instead, must be associated with a quantifiable decline of biological and/or genetic diversity and lead to a measurable loss of diversity or change in ecosystem functioning. Assessments of ecological impact should thus consider the multiple processes and effects that potentially occur from invasive fish populations where, for example, impacts of invasive common carp Cyprinus carpio populations are through a combination of bottom-up and top-down processes that, in entirety, cause shifts in lake stable states and decreased species richness and/or abundances in the biotic communities. Such far-reaching ecological impacts also align to contemporary definitions of ecosystem collapse, given they involve substantial and persistent declines in biodiversity and ecosystem functions that cannot be recovered unaided. Thus, while not all introduced freshwater fishes will become invasive, those species that do develop invasive populations can cause substantial ecological impacts, where some of the impacts on biodiversity and ecosystem functioning might be sufficiently harmful to be considered as contributing to ecosystem collapse.
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Affiliation(s)
- John Robert Britton
- Department of Life and Environmental Sciences, Faculty of Science and Technology, Bournemouth University, Poole, UK
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3
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Soto I, Ahmed DA, Balzani P, Cuthbert RN, Haubrock PJ. Sigmoidal curves reflect impacts and dynamics of aquatic invasive species. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 872:161818. [PMID: 36801313 DOI: 10.1016/j.scitotenv.2023.161818] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Revised: 01/09/2023] [Accepted: 01/20/2023] [Indexed: 06/18/2023]
Abstract
Identifying general patterns and trends underlying the impacts and dynamics of biological invasions has proven elusive for scientists. Recently, the impact curve was proposed as a means to predict temporal impacts of invasive alien species, characterised by a sigmoidal growth pattern with an initial exponential increase, followed by a subsequent rate of decline and approaching a saturation level in the long-term where impact is maximised. While the impact curve has been empirically demonstrated with monitoring data of a single invasive alien species (the New Zealand mud snail, Potamopyrgus antipodarum), broadscale applicability remains to be tested for other taxa. Here, we examined whether the impact curve can adequately describe the invasion dynamics of 13 other aquatic species (within Amphipoda, Bivalvia, Gastropoda, Hirudinea, Isopoda, Mysida, and Platyhelminthes) at the European level, employing multi-decadal time series of macroinvertebrate cumulative abundances from regular benthic monitoring efforts. For all except one tested species (the killer shrimp, Dikerogammarus villosus), the sigmoidal impact curve was strongly supported (R2 > 0.95) on a sufficiently long time-scale. For D. villosus, the impact had not yet reached saturation, likely reflecting the ongoing European invasion. The impact curve facilitated estimation of introduction years and lag phases, as well as parameterisation of growth rates and carrying capacities, providing strong support for the boom-bust dynamics typically observed in several invader populations. These findings suggest that impact can grow rapidly before saturating at a high level, with timely monitoring often lacking for the detection of invasive alien species post-introduction. We further confirm the applicability of the impact curve to determine trends in invasion stages, population dynamics, and impacts of pertinent invaders, ultimately helping inform the timing of management interventions. We hence call for improved monitoring and reporting of invasive alien species over broad spatio-temporal scales to permit further testing of large-scale impact consistencies across various habitat types.
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Affiliation(s)
- Ismael Soto
- University of South Bohemia in České Budějovice, Faculty of Fisheries and Protection of Waters, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Zátiší 728/II, 389 25 Vodňany, Czech Republic.
| | - Danish A Ahmed
- Center for Applied Mathematics and Bioinformatics, Department of Mathematics and Natural Sciences, Gulf University for Science and Technology, Kuwait
| | - Paride Balzani
- University of South Bohemia in České Budějovice, Faculty of Fisheries and Protection of Waters, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Zátiší 728/II, 389 25 Vodňany, Czech Republic
| | - Ross N Cuthbert
- Institute for Global Food Security, School of Biological Sciences, Queen's University Belfast, BT9 5DL Belfast, Northern Ireland, United Kingdom of Great Britain
| | - Phillip J Haubrock
- University of South Bohemia in České Budějovice, Faculty of Fisheries and Protection of Waters, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Zátiší 728/II, 389 25 Vodňany, Czech Republic; Center for Applied Mathematics and Bioinformatics, Department of Mathematics and Natural Sciences, Gulf University for Science and Technology, Kuwait; Senckenberg Research Institute and Natural History Museum Frankfurt, Department of River Ecology and Conservation, Gelnhausen, Germany
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4
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Uden DR, Mech AM, Havill NP, Schulz AN, Ayres MP, Herms DA, Hoover AM, Gandhi KJK, Hufbauer RA, Liebhold AM, Marsico TD, Raffa KF, Thomas KA, Tobin PC, Allen CR. Phylogenetic risk assessment is robust for forecasting the impact of European insects on North American conifers. ECOLOGICAL APPLICATIONS : A PUBLICATION OF THE ECOLOGICAL SOCIETY OF AMERICA 2023; 33:e2761. [PMID: 36218183 DOI: 10.1002/eap.2761] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2022] [Revised: 08/03/2022] [Accepted: 08/05/2022] [Indexed: 06/16/2023]
Abstract
Some introduced species cause severe damage, although the majority have little impact. Robust predictions of which species are most likely to cause substantial impacts could focus efforts to mitigate those impacts or prevent certain invasions entirely. Introduced herbivorous insects can reduce crop yield, fundamentally alter natural and managed forest ecosystems, and are unique among invasive species in that they require certain host plants to succeed. Recent studies have demonstrated that understanding the evolutionary history of introduced herbivores and their host plants can provide robust predictions of impact. Specifically, divergence times between hosts in the native and introduced ranges of a nonnative insect can be used to predict the potential impact of the insect should it establish in a novel ecosystem. However, divergence time estimates vary among published phylogenetic datasets, making it crucial to understand if and how the choice of phylogeny affects prediction of impact. Here, we tested the robustness of impact prediction to variation in host phylogeny by using insects that feed on conifers and predicting the likelihood of high impact using four different published phylogenies. Our analyses ranked 62 insects that are not established in North America and 47 North American conifer species according to overall risk and vulnerability, respectively. We found that results were robust to the choice of phylogeny. Although published vascular plant phylogenies continue to be refined, our analysis indicates that those differences are not substantial enough to alter the predictions of invader impact. Our results can assist in focusing biosecurity programs for conifer pests and can be more generally applied to nonnative insects and their potential hosts by prioritizing surveillance for those insects most likely to be damaging invaders.
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Affiliation(s)
- Daniel R Uden
- School of Natural Resources, Department of Agronomy and Horticulture, Center for Resilience in Agricultural Working Landscapes, University of Nebraska-Lincoln, Lincoln, Nebraska, USA
| | - Angela M Mech
- School of Biology and Ecology, University of Maine, Orono, Maine, USA
| | - Nathan P Havill
- Northern Research Station, USDA Forest Service, Hamden, Connecticut, USA
| | - Ashley N Schulz
- Department of Agricultural Biology and Graduate Degree Program in Ecology, Colorado State University, Fort Collins, Colorado, USA
- Department of Forestry, Mississippi State University, Starkville, Mississippi, USA
| | - Matthew P Ayres
- Department of Biological Sciences, Dartmouth College, Hanover, New Hampshire, USA
| | | | - Angela M Hoover
- U.S. Geological Survey, Southwest Biological Science Center, Tucson, Arizona, USA
| | - Kamal J K Gandhi
- D.B. Warnell School of Forestry and Natural Resources, University of Georgia, Athens, Georgia, USA
| | - Ruth A Hufbauer
- Department of Agricultural Biology and Graduate Degree Program in Ecology, Colorado State University, Fort Collins, Colorado, USA
| | - Andrew M Liebhold
- USDA Forest Service Northern Research Station, Morgantown, West Virginia, USA
- Faculty of Forestry and Wood Sciences, Czech University of Life Sciences Prague, Prague, Czech Republic
| | - Travis D Marsico
- Department of Biological Sciences, Arkansas State University, Jonesboro, Arkansas, USA
| | - Kenneth F Raffa
- Department of Entomology, University of Wisconsin, Madison, Wisconsin, USA
| | - Kathryn A Thomas
- U.S. Geological Survey, Southwest Biological Science Center, Tucson, Arizona, USA
| | - Patrick C Tobin
- School of Environmental and Forest Sciences, University of Washington, Seattle, Washington, USA
| | - Craig R Allen
- School of Natural Resources, Center for Resilience in Agricultural Working Landscapes, University of Nebraska-Lincoln, Lincoln, Nebraska, USA
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5
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Damasceno G, Fidelis A. Per-capita impacts of an invasive grass vary across levels of ecological organization in a tropical savanna. Biol Invasions 2023. [DOI: 10.1007/s10530-023-03011-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/21/2023]
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6
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Rowland JA, Walsh JC, Beitzel M, Brawata R, Brown D, Chalmers L, Evans L, Eyles K, Gibbs R, Grover S, Grundy S, Harris RMB, Haywood S, Hilton M, Hope G, Keaney B, Keatley M, Keith DA, Lawrence R, Lutz ML, MacDonald T, MacPhee E, McLean N, Powell S, Robledo‐Ruiz DA, Sato CF, Schroder M, Silvester E, Tolsma A, Western AW, Whinam J, White M, Wild A, Williams RJ, Wright G, Young W, Moore JL. Setting research priorities for effective management of a threatened ecosystem: Australian alpine and subalpine peatland. CONSERVATION SCIENCE AND PRACTICE 2023. [DOI: 10.1111/csp2.12891] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Affiliation(s)
- Jessica A. Rowland
- School of Biological Sciences Monash University Clayton Victoria Australia
| | - Jessica C. Walsh
- School of Biological Sciences Monash University Clayton Victoria Australia
| | - Matthew Beitzel
- Conservation Research, Environment, Planning and Sustainable Development Directorate Canberra Australia
| | - Renee Brawata
- Conservation Research, Environment, Planning and Sustainable Development Directorate Canberra Australia
| | - Daniel Brown
- Eastern Victoria Office Bright Victoria Australia
| | - Linden Chalmers
- Biodiversity Planning and Policy, ACT Government Dickson Australia
| | - Lisa Evans
- Conservation Research, Environment, Planning and Sustainable Development Directorate Canberra Australia
| | - Kathryn Eyles
- Department of Climate Change, Energy, and the Environment Canberra Australia
| | - Rob Gibbs
- Australian Alps National Parks Co‐operative Management Program, NSW National Parks and Wildlife Service, Department of Planning, Industry and Environment Parramatta New South Wales Australia
| | - Samantha Grover
- Applied Chemistry and Environmental Science RMIT University Melbourne Victoria Australia
| | - Shane Grundy
- International Mire Conservation Group (IMCG) Greifswald Germany
| | - Rebecca M. B. Harris
- School of Geography, Planning, and Spatial Sciences University of Tasmania Hobart Tasmania Australia
| | - Shayne Haywood
- West Gippsland Catchment Management Authority Traralgon Victoria Australia
| | - Mairi Hilton
- School of Biological Sciences Monash University Clayton Victoria Australia
| | - Geoffrey Hope
- College of Asia and the Pacific, Australian National University Canberra Australia
| | - Ben Keaney
- College of Asia and the Pacific, Australian National University Canberra Australia
| | | | - David A. Keith
- Centre for Ecosystem Science, University of New South Wales Sydney New South Wales Australia
- NSW Department of Planning, Industry and Environment Hurstville New South Wales Australia
| | - Ruth Lawrence
- Department of Geography The University of Melbourne Carlton Victoria Australia
| | - Maiko L. Lutz
- School of Biological Sciences Monash University Clayton Victoria Australia
| | | | - Elizabeth MacPhee
- Alpine Flora ‐ High Altitude Rehabilitation Consultant Tumut New South Wales Australia
| | - Nina McLean
- Conservation Research, Environment, Planning and Sustainable Development Directorate Canberra Australia
| | - Susan Powell
- Department of Climate Change, Energy, and the Environment Canberra Australia
| | | | - Chloe F. Sato
- ACT Government Canberra Australia
- Centre for Integrative Ecology, School of Life and Environmental Sciences, Deakin University Burwood Victoria Australia
| | - Mel Schroder
- Southern Ranges Branch, NSW National Parks and Wildlife Service, Department of Planning, Industry and Environment Jindabyne New South Wales Australia
| | - Ewen Silvester
- Research Centre for Applied Alpine Ecology (RCAAE), Department of Ecology, Environment and Evolution (DEEE) La Trobe University Wodonga Australia
| | - Arn Tolsma
- Arthur Rylah Institute, Biodiversity Division, Environment and Climate Change, Department of Environment, Land, Water and Planning Heidelberg Victoria Australia
| | - Andrew W. Western
- Department of Infrastructure Engineering The University of Melbourne Parkville Australia
| | - Jennie Whinam
- School of Geography, Planning & Spatial Sciences University of Tasmania Sandy Bay Tasmania Australia
| | - Matthew White
- Biodiversity Conservation Division, Department of Agriculture, Water and the Environment Canberra Australia
| | - Anita Wild
- Wild Ecology Pty Ltd. Mount Nelson Tasmania Australia
| | - Richard J. Williams
- Charles Darwin University Faculty of Engineering Health Science and the Environment, Institute for the Environment and Livelihoods Darwin Northwest Territories Australia
| | - Genevieve Wright
- NSW Department of Planning, Industry and Environment Hurstville New South Wales Australia
| | - Wade Young
- Parks and Conservation Service, Environment and Planning Directorate Canberra Australia
| | - Joslin L. Moore
- School of Biological Sciences Monash University Clayton Victoria Australia
- Arthur Rylah Institute, Biodiversity Division, Environment and Climate Change, Department of Environment, Land, Water and Planning Heidelberg Victoria Australia
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7
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Wiatrowska B, Kurek P, Moroń D, Celary W, Chrzanowski A, Trzciński P, Piechnik Ł. Linear scaling – negative effects of invasive Spiraea tomentosa (Rosaceae) on wetland plants and pollinator communities. NEOBIOTA 2023. [DOI: 10.3897/neobiota.81.95849] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Invasive plants directly and indirectly disrupt the ecosystem functioning, of which indirect effects, for example, through trophic cascades, are particularly difficult to predict. It is frequently assumed that the impact of an invading species on the ecosystem is proportional (linearly related) to its density or abundance in a habitat, but this assumption has rarely been tested. We hypothesised that abundance and richness of plants and potentially pollinators of wet meadows change as a result of invasion of steeplebush Spiraea tomentosa and that these changes are proportional to the density of the shrub. We selected 27 sites amongst wet meadows habitats invaded by S. tomentosa with coverage ranging from 0% to 100% and examined the diversity of plants, as well as the abundance and diversity of flower visitors (bees, butterflies with moths and flies). Our results showed that the richness of plants, as well as the richness and number of individuals of flower visitors, decrease significantly and linearly with an increase of the S. tomentosa cover. This finding supports the hypothesis that the impact of an invasive species can be proportional to their population density, especially if this species is limiting the available resources without supplying others. Our study is the first to show such an unequivocal negative, linear effect of an invasive shrub on the abundance and richness of potential pollinators. It proves that the negative impact of S. tomentosa on the wetland ecosystem appears even with a minor coverage of the invader, which should be taken into account when planning activities aimed at controlling the population of this transformer species. The simultaneously detected linear dependence allows us to assume that the benefits of controlling secondary populations of the shrub can be proportional to the incurred effort.
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8
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Moyano J, Zamora-Nasca LB, Caplat P, García-Díaz P, Langdon B, Lambin X, Montti L, Pauchard A, Nuñez MA. Predicting the impact of invasive trees from different measures of abundance. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 325:116480. [PMID: 36306626 DOI: 10.1016/j.jenvman.2022.116480] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Revised: 08/11/2022] [Accepted: 10/06/2022] [Indexed: 06/16/2023]
Abstract
Biological invasions produce negative impacts worldwide, causing massive economic costs and ecological impacts. Knowing the relationship between invasive species abundance and the magnitude of their impacts (abundance-impact curves) is critical to designing prevention and management strategies that effectively tackle these impacts. However, different measures of abundance may produce different abundance-impact curves. Woody plants are among the most transformative invaders, especially in grassland ecosystems because of the introduction of hitherto absent life forms. In this study, our first goal was to assess the impact of a woody invader, Pinus contorta (hereafter pine), on native grassland productivity and livestock grazing in Patagonia (Argentina), building abundance-impact curves. Our second goal, was to compare different measure of pine abundance (density, basal area and canopy cover) as predictors of pine's impact on grassland productivity. Our third goal, was to compare abundance-impact curves among the mentioned measures of pine abundance and among different measures of impact: total grassland productivity, palatable productivity and sheep stocking rate (the number of sheep that the grassland can sustainably support). Pine canopy cover, closely followed by basal area, was the measure of abundance that best explained the impact on grassland productivity, but the shape of abundance impact curves differed between measures of abundance. While increases in pine density and basal area always reduced grassland productivity, pine canopy cover below 30% slightly increased grassland productivity and higher values caused an exponential decline. This increase in grassland productivity with low levels of pine canopy cover could be explained by the amelioration of stressful abiotic conditions for grassland species. Different measures of impact, namely total productivity, palatable productivity and sheep stocking rate, drew very similar results. Our abundance-impact curves are key to guide the management of invasive pines because a proper assessment of how many invasive individuals (per surface unit) are unacceptable, according to environmental or economic impact thresholds, is fundamental to define when to start management actions.
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Affiliation(s)
- Jaime Moyano
- Grupo de Ecología de Invasiones, INIBIOMA, CONICET, Universidad Nacional del Comahue, Quintral 1250, San Carlos de Bariloche, CP, 8400, Argentina.
| | - Lucia B Zamora-Nasca
- Grupo de Investigaciones en Biología de la Conservación, Laboratorio Ecotono, INIBIOMA, CONICET, Universidad Nacional del Comahue, Quintral 1250, San Carlos de Bariloche, CP, 8400, Argentina
| | - Paul Caplat
- School of Biological Sciences, Queen's University Belfast, Belfast, UK
| | - Pablo García-Díaz
- School of Biological Sciences, University of Aberdeen, Aberdeen AB24 2TZ, UK
| | - Bárbara Langdon
- Laboratorio de Invasiones Biológicas (LIB). Facultad de Ciencias Forestales, Universidad de Concepción, Victoria, 631, Concepción, Chile; Institute of Ecology and Biodiversity (IEB), Santiago, Chile
| | - Xavier Lambin
- School of Biological Sciences, University of Aberdeen, Aberdeen AB24 2TZ, UK
| | - Lía Montti
- Instituto de Ecología Regional (UNT-CONICET) Tucumán, Argentina; Instituto de Investigaciones Marinas y Costeras (IIMyC-CONICET), Instituto de Geología de Costas-CIC, Universidad Nacional de Mar del Plata, Argentina
| | - Aníbal Pauchard
- Laboratorio de Invasiones Biológicas (LIB). Facultad de Ciencias Forestales, Universidad de Concepción, Victoria, 631, Concepción, Chile; Institute of Ecology and Biodiversity (IEB), Santiago, Chile
| | - Martin A Nuñez
- Grupo de Ecología de Invasiones, INIBIOMA, CONICET, Universidad Nacional del Comahue, Quintral 1250, San Carlos de Bariloche, CP, 8400, Argentina; Department of Biology and Biochemistry, University of Houston, Houston, TX, 77204, USA
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9
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Pepin KM, Davis AJ, Epanchin-Niell RS, Gormley AM, Moore JL, Smyser TJ, Shaffer HB, Kendall WL, Shea K, Runge MC, McKee S. Optimizing management of invasions in an uncertain world using dynamic spatial models. ECOLOGICAL APPLICATIONS : A PUBLICATION OF THE ECOLOGICAL SOCIETY OF AMERICA 2022; 32:e2628. [PMID: 35397481 DOI: 10.1002/eap.2628] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Revised: 12/13/2021] [Accepted: 02/04/2022] [Indexed: 06/14/2023]
Abstract
Dispersal drives invasion dynamics of nonnative species and pathogens. Applying knowledge of dispersal to optimize the management of invasions can mean the difference between a failed and a successful control program and dramatically improve the return on investment of control efforts. A common approach to identifying optimal management solutions for invasions is to optimize dynamic spatial models that incorporate dispersal. Optimizing these spatial models can be very challenging because the interaction of time, space, and uncertainty rapidly amplifies the number of dimensions being considered. Addressing such problems requires advances in and the integration of techniques from multiple fields, including ecology, decision analysis, bioeconomics, natural resource management, and optimization. By synthesizing recent advances from these diverse fields, we provide a workflow for applying ecological theory to advance optimal management science and highlight priorities for optimizing the control of invasions. One of the striking gaps we identify is the extremely limited consideration of dispersal uncertainty in optimal management frameworks, even though dispersal estimates are highly uncertain and greatly influence invasion outcomes. In addition, optimization frameworks rarely consider multiple types of uncertainty (we describe five major types) and their interrelationships. Thus, feedbacks from management or other sources that could magnify uncertainty in dispersal are rarely considered. Incorporating uncertainty is crucial for improving transparency in decision risks and identifying optimal management strategies. We discuss gaps and solutions to the challenges of optimization using dynamic spatial models to increase the practical application of these important tools and improve the consistency and robustness of management recommendations for invasions.
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Affiliation(s)
- Kim M Pepin
- National Wildlife Research Center, United States Department of Agriculture, Animal and Plant Health Inspection Service, Wildlife Services, Fort Collins, Colorado, USA
| | - Amy J Davis
- National Wildlife Research Center, United States Department of Agriculture, Animal and Plant Health Inspection Service, Wildlife Services, Fort Collins, Colorado, USA
| | - Rebecca S Epanchin-Niell
- Resources for the Future, Washington, District of Columbia, USA
- Department of Agricultural and Resource Economics, University of Maryland, College Park, Maryland, USA
| | | | - Joslin L Moore
- School of Biological Sciences, Monash University, Clayton, Victoria, Australia
| | - Timothy J Smyser
- National Wildlife Research Center, United States Department of Agriculture, Animal and Plant Health Inspection Service, Wildlife Services, Fort Collins, Colorado, USA
| | - H Bradley Shaffer
- Department of Ecology and Evolutionary Biology, and La Kretz Center for California Conservation Science, Institute of the Environment and Sustainability, University of California, Los Angeles, Los Angeles, California, USA
| | - William L Kendall
- U.S. Geological Survey, Colorado Cooperative Fish and Wildlife Research Unit, Colorado State University, Fort Collins, Colorado, USA
| | - Katriona Shea
- Department of Biology, The Pennsylvania State University, University Park, Pennsylvania, USA
| | - Michael C Runge
- U.S. Geological Survey Patuxent Wildlife Research Center, Laurel, Maryland, USA
| | - Sophie McKee
- National Wildlife Research Center, United States Department of Agriculture, Animal and Plant Health Inspection Service, Wildlife Services, Fort Collins, Colorado, USA
- Department of Economics, Colorado State University, Fort Collins, Colorado, USA
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10
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Haubrock PJ, Ahmed DA, Cuthbert RN, Stubbington R, Domisch S, Marquez JRG, Beidas A, Amatulli G, Kiesel J, Shen LQ, Soto I, Angeler DG, Bonada N, Cañedo-Argüelles M, Csabai Z, Datry T, de Eyto E, Dohet A, Drohan E, England J, Feio MJ, Forio MAE, Goethals P, Graf W, Heino J, Hudgins EJ, Jähnig SC, Johnson RK, Larrañaga A, Leitner P, L'Hoste L, Lizee MH, Maire A, Rasmussen JJ, Schäfer RB, Schmidt-Kloiber A, Vannevel R, Várbíró G, Wiberg-Larsen P, Haase P. Invasion impacts and dynamics of a European-wide introduced species. GLOBAL CHANGE BIOLOGY 2022; 28:4620-4632. [PMID: 35570183 DOI: 10.1111/gcb.16207] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Accepted: 04/16/2022] [Indexed: 06/15/2023]
Abstract
Globalization has led to the introduction of thousands of alien species worldwide. With growing impacts by invasive species, understanding the invasion process remains critical for predicting adverse effects and informing efficient management. Theoretically, invasion dynamics have been assumed to follow an "invasion curve" (S-shaped curve of available area invaded over time), but this dynamic has lacked empirical testing using large-scale data and neglects to consider invader abundances. We propose an "impact curve" describing the impacts generated by invasive species over time based on cumulative abundances. To test this curve's large-scale applicability, we used the data-rich New Zealand mud snail Potamopyrgus antipodarum, one of the most damaging freshwater invaders that has invaded almost all of Europe. Using long-term (1979-2020) abundance and environmental data collected across 306 European sites, we observed that P. antipodarum abundance generally increased through time, with slower population growth at higher latitudes and with lower runoff depth. Fifty-nine percent of these populations followed the impact curve, characterized by first occurrence, exponential growth, then long-term saturation. This behaviour is consistent with boom-bust dynamics, as saturation occurs due to a rapid decline in abundance over time. Across sites, we estimated that impact peaked approximately two decades after first detection, but the rate of progression along the invasion process was influenced by local abiotic conditions. The S-shaped impact curve may be common among many invasive species that undergo complex invasion dynamics. This provides a potentially unifying approach to advance understanding of large-scale invasion dynamics and could inform timely management actions to mitigate impacts on ecosystems and economies.
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Affiliation(s)
- Phillip J Haubrock
- Senckenberg Research Institute and Natural History Museum Frankfurt, Department of River Ecology and Conservation, Gelnhausen, Germany
- University of South Bohemia in České Budějovice, Faculty of Fisheries and Protection of Waters, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Vodňany, Czech Republic
| | - Danish A Ahmed
- Center for Applied Mathematics and Bioinformatics (CAMB), Department of Mathematics and Natural Sciences, Gulf University for Science and Technology, Hawally, Kuwait
| | - Ross N Cuthbert
- GEOMAR Helmholtz-Zentrum für Ozeanforschung Kiel, Kiel, Germany
- School of Biological Sciences, Queen's University Belfast, Belfast, UK
| | - Rachel Stubbington
- School of Science & Technology, Nottingham Trent University, Nottingham, UK
| | - Sami Domisch
- Leibniz Institute of Freshwater Ecology and Inland Fisheries (IGB), Department Community and Ecosystem Ecology, Berlin, Germany
| | - Jaime R G Marquez
- Leibniz Institute of Freshwater Ecology and Inland Fisheries (IGB), Department Community and Ecosystem Ecology, Berlin, Germany
| | - Ayah Beidas
- Center for Applied Mathematics and Bioinformatics (CAMB), Department of Mathematics and Natural Sciences, Gulf University for Science and Technology, Hawally, Kuwait
| | - Giuseppe Amatulli
- Yale University, School of the Environment, New Haven, Connecticut, USA
| | - Jens Kiesel
- Leibniz Institute of Freshwater Ecology and Inland Fisheries (IGB), Department Community and Ecosystem Ecology, Berlin, Germany
- Christian-Albrechts-University Kiel, Institute for Natural Resource Conservation, Department of Hydrology and Water Resources Management, Kiel, Germany
| | - Longzhu Q Shen
- Leibniz Institute of Freshwater Ecology and Inland Fisheries (IGB), Department Community and Ecosystem Ecology, Berlin, Germany
- Carnegie Mellon University, Institute for Green Science, Pittsburgh, Pennsylvania, USA
| | - Ismael Soto
- University of South Bohemia in České Budějovice, Faculty of Fisheries and Protection of Waters, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Vodňany, Czech Republic
| | - David G Angeler
- Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences, Uppsala, Sweden
- School of Natural Resources, University of Nebraska-Lincoln, Lincoln, Nebraska, USA
| | - Núria Bonada
- Freshwater Ecology, Hydrology and Management, Departament de Biologia Evolutiva, Ecologia i Ciències Ambientals, Facultat de Biologia, Institut de Recerca de la Biodiversitat (IRBio), Universitat de Barcelona (UB), Barcelona, Spain
| | - Miguel Cañedo-Argüelles
- Freshwater Ecology, Hydrology and Management, Departament de Biologia Evolutiva, Ecologia i Ciències Ambientals, Facultat de Biologia, Institut de Recerca de l'Aigua (IdRA), Universitat de Barcelona (UB), Barcelona, Spain
| | - Zoltán Csabai
- Department of Hydrobiology, University of Pécs, Pécs, Hungary
- Department of Botany and Zoology, Faculty of Science, Masaryk University, Brno, Czech Republic
| | - Thibault Datry
- INRAE, UR RiverLy, centre de Lyon-Villeurbanne, Villeurbanne, France
| | | | - Alain Dohet
- Environmental Research and Innovation (ERIN) Luxembourg Institute of Science and Technology (LIST), Belvaux, Luxembourg
| | - Emma Drohan
- Institute of Technology, Centre for Freshwater and Environmental Studies, Dundalk, Ireland
| | | | - Maria J Feio
- MARE - Marine and Environmental Sciences Centre, Department of Life Sciences, University of Coimbra, Coimbra, Portugal
| | - Marie A E Forio
- Department of Animal Sciences and Aquatic Ecology, Ghent University, Ghent, Belgium
| | - Peter Goethals
- Department of Animal Sciences and Aquatic Ecology, Ghent University, Ghent, Belgium
| | - Wolfram Graf
- University of Natural Resources and Life Sciences, Institute of Hydrobiology and Aquatic Ecosystem Management, Vienna, Austria
| | - Jani Heino
- Finnish Environment Institute, Freshwater Centre, Oulu, Finland
| | - Emma J Hudgins
- Department of Biology, Carleton University, Ottawa, Canada
| | - Sonja C Jähnig
- Leibniz Institute of Freshwater Ecology and Inland Fisheries (IGB), Department Community and Ecosystem Ecology, Berlin, Germany
- Geography Department, Faculty of Mathematics and Natural Sciences, Humboldt-Universität zu Berlin, Berlin, Germany
| | - Richard K Johnson
- Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences, Uppsala, Sweden
| | - Aitor Larrañaga
- Department of Plant Biology and Ecology, Faculty of Science and Technology, University of the Basque Country (UPV/EHU), Leioa, Spain
| | - Patrick Leitner
- University of Natural Resources and Life Sciences, Institute of Hydrobiology and Aquatic Ecosystem Management, Vienna, Austria
| | - Lionel L'Hoste
- Environmental Research and Innovation (ERIN) Luxembourg Institute of Science and Technology (LIST), Belvaux, Luxembourg
| | - Marie-Helene Lizee
- RECOVER Research Unit, National Research Institute for Agriculture, Food and Environment (INRAE), Aix-en-Provence, France
| | - Anthony Maire
- EDF R&D, Laboratoire National d'Hydraulique et Environnement (LNHE), Chatou, France
| | - Jes J Rasmussen
- Section for Nature Based Solutions, Norwegian Institute for Water Research (NIVA), Oslo, Norway
| | - Ralf B Schäfer
- University of Koblenz Landau, Institute for Environmental Sciences, Landau, Germany
| | - Astrid Schmidt-Kloiber
- University of Natural Resources and Life Sciences, Institute of Hydrobiology and Aquatic Ecosystem Management, Vienna, Austria
| | | | - Gábor Várbíró
- Department of Tisza Research, Institute of Aquatic Ecology, Centre for Ecological Research, Debrecen, Hungary
| | | | - Peter Haase
- Senckenberg Research Institute and Natural History Museum Frankfurt, Department of River Ecology and Conservation, Gelnhausen, Germany
- University of Duisburg-Essen, Faculty of Biology, Essen, Germany
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11
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Latombe G, Catford JA, Essl F, Lenzner B, Richardson DM, Wilson JRU, McGeoch MA. GIRAE: a generalised approach for linking the total impact of invasion to species' range, abundance and per-unit effects. Biol Invasions 2022; 24:3147-3167. [PMID: 36131994 PMCID: PMC9482606 DOI: 10.1007/s10530-022-02836-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2021] [Accepted: 05/11/2022] [Indexed: 12/27/2022]
Abstract
The total impact of an alien species was conceptualised as the product of its range size, local abundance and per-unit effect in a seminal paper by Parker et al. (Biol Invasions 1:3-19, 1999). However, a practical approach for estimating the three components has been lacking. Here, we generalise the impact formula and, through use of regression models, estimate the relationship between the three components of impact, an approach we term GIRAE (Generalised Impact = Range size × Abundance × per-unit Effect). We discuss how GIRAE can be applied to multiple types of impact, including environmental impacts, damage and management costs. We propose two methods for applying GIRAE. The species-specific method computes the relationship between impact, range size, abundance and per-unit effect for a given species across multiple invaded sites or regions of different sizes. The multi-species method combines data from multiple species across multiple sites or regions to calculate a per-unit effect for each species and is computed using a single regression model. The species-specific method is more accurate, but it requires a large amount of data for each species and assumes a constant per-unit effect for a species across the invaded area. The multi-species method is more easily applicable and data-parsimonious, but assumes the same relationship between impact, range size and abundance for all considered species. We illustrate these methods using data about money spent managing plant invasions in different biomes of South Africa. We found clear differences between species in terms of money spent per unit area invaded, with per-unit expenditure varying substantially between biomes for some species-insights that are useful for monitoring and evaluating management. GIRAE offers a versatile and practical method that can be applied to many different types of data to better understand and manage the impacts of biological invasions. Supplementary Information The online version contains supplementary material available at 10.1007/s10530-022-02836-0.
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Affiliation(s)
- Guillaume Latombe
- Institute of Ecology and Evolution, The University of Edinburgh, King’s Buildings, EH9 3FL Edinburgh, UK
| | - Jane A. Catford
- Department of Geography, King’s College London, 30 Aldwych, London, WC2B 4BG UK
- School of Ecosystem and Forest Sciences, University of Melbourne, VIC 3121 Richmond, Australia
| | - Franz Essl
- Bioinvasions, Global Change, Macroecology Group, Department of Botany and Biodiversity Research, University of Vienna, Rennweg 14, 1030 Vienna, Austria
- Centre for Invasion Biology, Department of Botany and Zoology, Stellenbosch University, Stellenbosch, South Africa
| | - Bernd Lenzner
- Bioinvasions, Global Change, Macroecology Group, Department of Botany and Biodiversity Research, University of Vienna, Rennweg 14, 1030 Vienna, Austria
| | - David M. Richardson
- Centre for Invasion Biology, Department of Botany and Zoology, Stellenbosch University, Stellenbosch, South Africa
| | - John R. U. Wilson
- Centre for Invasion Biology, Department of Botany and Zoology, Stellenbosch University, Stellenbosch, South Africa
- South African National Biodiversity Institute, Kirstenbosch Research Centre, Cape Town, South Africa
| | - Melodie A. McGeoch
- Department of Ecology, Environment and Evolution, LaTrobe University, Melbourne, VIC 3086 Australia
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12
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Buckley YM, Puy J. The macroecology of plant populations from local to global scales. THE NEW PHYTOLOGIST 2022; 233:1038-1050. [PMID: 34536970 DOI: 10.1111/nph.17749] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Accepted: 09/02/2021] [Indexed: 06/13/2023]
Abstract
Population ecologists develop theoretical and pragmatic knowledge of how and why populations change or remain stable, how life histories evolve and devise management strategies for populations of concern. However, forecasting the effects of global change or recommending management strategies is often urgent, requiring ecologists to work without detailed local evidence while using data and models from outside the focal location or species. Here we explore how the comparative ecology of populations, population macroecology, can be used to develop generalisations within and between species across different scales, using available demographic, environmental, life history, occurrence and trait data. We outline the strengths and weaknesses of using broad climatic variables and suitability inferred from probability of occupancy models to represent environmental variation in comparative analyses. We evaluate the contributions of traits, environment and their interaction as drivers of life history strategy. We propose that insights from life history theory, together with the adaptive capacity of populations and individuals, can inform on 'persist in place' vs 'shift in space' responses to changing conditions. As demographic data accumulate at landscape and regional scales for single species, and throughout plant phylogenies, we will have new opportunities for testing macroecological generalities within and across species.
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Affiliation(s)
- Yvonne M Buckley
- School of Natural Sciences, Zoology, Trinity College Dublin, Dublin 2, Ireland
- School of Biological Sciences, The University of Queensland, St Lucia, 4072, QLD, Australia
| | - Javier Puy
- School of Natural Sciences, Zoology, Trinity College Dublin, Dublin 2, Ireland
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13
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Pellegrini E, Boscutti F, Alberti G, Casolo V, Contin M, De Nobili M. Stand age, degree of encroachment and soil characteristics modulate changes of C and N cycles in dry grassland soils invaded by the N 2-fixing shrub Amorpha fruticosa. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 792:148295. [PMID: 34147804 DOI: 10.1016/j.scitotenv.2021.148295] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2021] [Revised: 05/28/2021] [Accepted: 06/01/2021] [Indexed: 06/12/2023]
Abstract
The N2-fixing shrub Amorpha fruticosa L. is rapidly spreading in the dry riparian natural grasslands of Europe, altering ecosystem functions and depleting plant diversity. Alteration of the N cycle represents the key factor involved in invasions by N2-fixing plants with cascading effects on plant species richness. We hypothesized that A. fruticosa encroachment strongly impacts not only the N but also the C cycle and that the magnitude of such alterations may be modulated by soil characteristics. To test these hypotheses, we selected four river floodplains in North East of Italy and compared natural uninvaded grasslands with half invaded and completely invaded sites, based on A. fruticosa stand characteristic and relevant leaf traits and on soil properties related to soil texture and to C and N cycles. Soil organic matter mineralisation, ammonification and nitrification rates were determined. Soil nitrification increased remarkably with plant invasion while ammonification was significantly higher only in half invaded sites. Soil organic matter mineralisation, microbial biomass C sustained per soil organic C unit and nitrification positively correlated with stand age, regardless to the stage of the encroachment. Mineralisation and nitrification increased with soil organic C and total N in uninvaded and completely invaded sites, but decreased in half invaded sites. At the half invasion stage, trends in nitrification and CO2 mineralisation were transitionally reverted and remediation may be facilitated by less pronounced changes in soil properties compared to completely invaded sites. Direct effects of plant invasion are modulated by the action of soil characteristics such as soil organic C and clay contents, with soils rich in organic C showing larger nitrification and mineralisation rates.
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Affiliation(s)
- E Pellegrini
- Department of Biology, University of Copenhagen, Universitetsparken 4, 3rd floor, 2100, København Ø, Denmark; Department of Agricultural, Food, Environmental and Animal Sciences, University of Udine, via delle Scienze 206, 33100, Udine, Italy.
| | - F Boscutti
- Department of Agricultural, Food, Environmental and Animal Sciences, University of Udine, via delle Scienze 206, 33100, Udine, Italy
| | - G Alberti
- Department of Agricultural, Food, Environmental and Animal Sciences, University of Udine, via delle Scienze 206, 33100, Udine, Italy
| | - V Casolo
- Department of Agricultural, Food, Environmental and Animal Sciences, University of Udine, via delle Scienze 206, 33100, Udine, Italy
| | - M Contin
- Department of Agricultural, Food, Environmental and Animal Sciences, University of Udine, via delle Scienze 206, 33100, Udine, Italy
| | - M De Nobili
- Department of Agricultural, Food, Environmental and Animal Sciences, University of Udine, via delle Scienze 206, 33100, Udine, Italy
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14
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Graham K, Gilligan D, Brown P, van Klinken RD, McColl KA, Durr PA. Use of spatio-temporal habitat suitability modelling to prioritise areas for common carp biocontrol in Australia using the virus CyHV-3. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2021; 295:113061. [PMID: 34348430 DOI: 10.1016/j.jenvman.2021.113061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2020] [Revised: 05/09/2021] [Accepted: 06/08/2021] [Indexed: 06/13/2023]
Abstract
Common carp (Cyprinus carpio) are an invasive species of the rivers and waterways of south-eastern Australia, implicated in the serious decline of many native fish species. Over the past 50 years a variety of control options have been explored, all of which to date have proved either ineffective or cost prohibitive. Most recently the use of cyprinid herpesvirus 3 (CyHV-3) has been proposed as a biocontrol agent, but to assess the risks and benefits of this, as well as to develop a strategy for the release of the virus, a knowledge of the fundamental processes driving carp distribution and abundance is required. To this end, we developed a novel process-based modelling framework that integrates expert opinion with spatio-temporal datasets via the construction of a Bayesian Network. The resulting weekly networks thus enabled an estimate of the habitat suitability for carp across a range of hydrological habitats in south-eastern Australia, covering five diverse catchment areas encompassing in total a drainage area of 132,129 km2 over a period of 17-27 years. This showed that while suitability for adult and subadult carp was medium-high across most habitats throughout the period, nevertheless the majority of habitats were poorly suited for the recruitment of larvae and young-of-year (YOY). Instead, high population abundance was confirmed to depend on a small number of recruitment hotspots which occur in years of favourable inundation. Quantification of the underlying ecological drivers of carp abundance thus makes possible detailed planning by focusing on critical weaknesses in the population biology of carp. More specifically, it permits the rational planning for population reduction using the biocontrol agent, CyHV-3, targeting areas where the total population density is above a "damage threshold" of approximately 100 kg/ha.
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Affiliation(s)
- K Graham
- CSIRO Australian Centre for Disease Preparedness (ACDP), Geelong, VIC, Australia
| | - D Gilligan
- NSW Department of Primary Industries - Fisheries NSW, NSW, Australia
| | - P Brown
- Centre for Freshwater Ecosystems, School of Life Sciences, La Trobe University, Mildura, VIC, Australia; Fisheries and Wetlands Consulting, Portarlington, VIC, Australia
| | | | - K A McColl
- CSIRO Health and Biosecurity, Geelong, VIC, Australia
| | - P A Durr
- CSIRO Australian Centre for Disease Preparedness (ACDP), Geelong, VIC, Australia.
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15
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Thomas SM, Verhoeven MR, Walsh JR, Larkin DJ, Hansen GJA. Species distribution models for invasive Eurasian watermilfoil highlight the importance of data quality and limitations of discrimination accuracy metrics. Ecol Evol 2021; 11:12567-12582. [PMID: 34594521 PMCID: PMC8462136 DOI: 10.1002/ece3.8002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2021] [Revised: 06/20/2021] [Accepted: 07/19/2021] [Indexed: 11/12/2022] Open
Abstract
AIM Availability of uniformly collected presence, absence, and abundance data remains a key challenge in species distribution modeling (SDM). For invasive species, abundance and impacts are highly variable across landscapes, and quality occurrence and abundance data are critical for predicting locations at high risk for invasion and impacts, respectively. We leverage a large aquatic vegetation dataset comprising point-level survey data that includes information on the invasive plant Myriophyllum spicatum (Eurasian watermilfoil) to: (a) develop SDMs to predict invasion and impact from environmental variables based on presence-absence, presence-only, and abundance data, and (b) compare evaluation metrics based on functional and discrimination accuracy for presence-absence and presence-only SDMs. LOCATION Minnesota, USA. METHODS Eurasian watermilfoil presence-absence and abundance information were gathered from 468 surveyed lakes, and 801 unsurveyed lakes were leveraged as pseudoabsences for presence-only models. A Random Forest algorithm was used to model the distribution and abundance of Eurasian watermilfoil as a function of lake-specific predictors, both with and without a spatial autocovariate. Occurrence-based SDMs were evaluated using conventional discrimination accuracy metrics and functional accuracy metrics assessing correlation between predicted suitability and observed abundance. RESULTS Water temperature degree days and maximum lake depth were two leading predictors influencing both invasion risk and abundance, but they were relatively less important for predicting abundance than other water quality measures. Road density was a strong predictor of Eurasian watermilfoil invasion risk but not abundance. Model evaluations highlighted significant differences: Presence-absence models had high functional accuracy despite low discrimination accuracy, whereas presence-only models showed the opposite pattern. MAIN CONCLUSION Complementing presence-absence data with abundance information offers a richer understanding of invasive Eurasian watermilfoil's ecological niche and enables evaluation of the model's functional accuracy. Conventional discrimination accuracy measures were misleading when models were developed using pseudoabsences. We thus caution against the overuse of presence-only models and suggest directing more effort toward systematic monitoring programs that yield high-quality data.
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Affiliation(s)
- Shyam M. Thomas
- Department of Fisheries Wildlife & Conservation Biology and Minnesota Aquatic Invasive Species Research CenterUniversity of MinnesotaSt. PaulMinnesotaUSA
| | - Michael R. Verhoeven
- Department of Fisheries Wildlife & Conservation Biology and Minnesota Aquatic Invasive Species Research CenterUniversity of MinnesotaSt. PaulMinnesotaUSA
| | - Jake R. Walsh
- Department of Fisheries Wildlife & Conservation Biology and Minnesota Aquatic Invasive Species Research CenterUniversity of MinnesotaSt. PaulMinnesotaUSA
- Minnesota Department of Natural ResourcesSt. PaulMinnesotaUSA
| | - Daniel J. Larkin
- Department of Fisheries Wildlife & Conservation Biology and Minnesota Aquatic Invasive Species Research CenterUniversity of MinnesotaSt. PaulMinnesotaUSA
| | - Gretchen J. A. Hansen
- Department of Fisheries Wildlife & Conservation Biology and Minnesota Aquatic Invasive Species Research CenterUniversity of MinnesotaSt. PaulMinnesotaUSA
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16
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Ahmed DA, Hudgins EJ, Cuthbert RN, Haubrock PJ, Renault D, Bonnaud E, Diagne C, Courchamp F. Modelling the damage costs of invasive alien species. Biol Invasions 2021. [DOI: 10.1007/s10530-021-02586-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
AbstractThe rate of biological invasions is growing unprecedentedly, threatening ecological and socioeconomic systems worldwide. Quantitative understandings of invasion temporal trajectories are essential to discern current and future economic impacts of invaders, and then to inform future management strategies. Here, we examine the temporal trends of cumulative invasion costs by developing and testing a novel mathematical model with a population dynamical approach based on logistic growth. This model characterises temporal cost developments into four curve types (I–IV), each with distinct mathematical and qualitative properties, allowing for the parameterization of maximum cumulative costs, carrying capacities and growth rates. We test our model using damage cost data for eight genera (Rattus, Aedes, Canis, Oryctolagus, Sturnus, Ceratitis, Sus and Lymantria) extracted from the InvaCost database—which is the most up-to-date and comprehensive global compilation of economic cost estimates associated with invasive alien species. We find fundamental differences in the temporal dynamics of damage costs among genera, indicating they depend on invasion duration, species ecology and impacted sectors of economic activity. The fitted cost curves indicate a lack of broadscale support for saturation between invader density and impact, including for Canis, Oryctolagus and Lymantria, whereby costs continue to increase with no sign of saturation. For other taxa, predicted saturations may arise from data availability issues resulting from an underreporting of costs in many invaded regions. Overall, this population dynamical approach can produce cost trajectories for additional existing and emerging species, and can estimate the ecological parameters governing the linkage between population dynamics and cost dynamics.
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17
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Knowledge, reason and emotion: using behavioral theories to understand people’s support for invasive animal management. Biol Invasions 2021. [DOI: 10.1007/s10530-021-02594-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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18
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Cuthbert RN, Pattison Z, Taylor NG, Verbrugge L, Diagne C, Ahmed DA, Leroy B, Angulo E, Briski E, Capinha C, Catford JA, Dalu T, Essl F, Gozlan RE, Haubrock PJ, Kourantidou M, Kramer AM, Renault D, Wasserman RJ, Courchamp F. Global economic costs of aquatic invasive alien species. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 775:145238. [PMID: 33715860 DOI: 10.1016/j.scitotenv.2021.145238] [Citation(s) in RCA: 105] [Impact Index Per Article: 35.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/12/2020] [Revised: 01/06/2021] [Accepted: 01/13/2021] [Indexed: 05/15/2023]
Abstract
Much research effort has been invested in understanding ecological impacts of invasive alien species (IAS) across ecosystems and taxonomic groups, but empirical studies about economic effects lack synthesis. Using a comprehensive global database, we determine patterns and trends in economic costs of aquatic IAS by examining: (i) the distribution of these costs across taxa, geographic regions and cost types; (ii) the temporal dynamics of global costs; and (iii) knowledge gaps, especially compared to terrestrial IAS. Based on the costs recorded from the existing literature, the global cost of aquatic IAS conservatively summed to US$345 billion, with the majority attributed to invertebrates (62%), followed by vertebrates (28%), then plants (6%). The largest costs were reported in North America (48%) and Asia (13%), and were principally a result of resource damages (74%); only 6% of recorded costs were from management. The magnitude and number of reported costs were highest in the United States of America and for semi-aquatic taxa. Many countries and known aquatic alien species had no reported costs, especially in Africa and Asia. Accordingly, a network analysis revealed limited connectivity among countries, indicating disparate cost reporting. Aquatic IAS costs have increased in recent decades by several orders of magnitude, reaching at least US$23 billion in 2020. Costs are likely considerably underrepresented compared to terrestrial IAS; only 5% of reported costs were from aquatic species, despite 26% of known invaders being aquatic. Additionally, only 1% of aquatic invasion costs were from marine species. Costs of aquatic IAS are thus substantial, but likely underreported. Costs have increased over time and are expected to continue rising with future invasions. We urge increased and improved cost reporting by managers, practitioners and researchers to reduce knowledge gaps. Few costs are proactive investments; increased management spending is urgently needed to prevent and limit current and future aquatic IAS damages.
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Affiliation(s)
- Ross N Cuthbert
- GEOMAR Helmholtz-Zentrum für Ozeanforschung Kiel, 24105 Kiel, Germany; South African Institute for Aquatic Biodiversity, Makhanda 6140, South Africa.
| | - Zarah Pattison
- Modelling, Evidence and Policy Research Group, School of Natural and Environmental Sciences, Newcastle University, Newcastle upon Tyne NE1 7RU, UK
| | - Nigel G Taylor
- Tour du Valat, Research Institute for the Conservation of Mediterranean Wetlands, 13200 Arles, France
| | - Laura Verbrugge
- University of Helsinki, Faculty of Agriculture and Forestry, Department of Forest Sciences, P.O. Box 27, 00014 Helsinki, Finland; Aalto University, Department of Built Environment, Water & Development Research Group, Tietotie 1E, FI-00076 Aalto, Finland
| | - Christophe Diagne
- Université Paris-Saclay, CNRS, AgroParisTech, Ecologie Systématique Evolution, 91405 Orsay, France
| | - Danish A Ahmed
- Center for Applied Mathematics and Bioinformatics (CAMB), Department of Mathematics and Natural Sciences, Gulf University for Science and Technology, P.O. Box 7207, Hawally 32093, Kuwait
| | - Boris Leroy
- Biologie des Organismes et Ecosystèmes Aquatiques (BOREA), Muséum national d'Histoire naturelle, CNRS, IRD, Sorbonne Université, Université Caen-Normandie, Université des Antilles, 43 rue Cuvier, CP 26, 75005 Paris, France
| | - Elena Angulo
- Université Paris-Saclay, CNRS, AgroParisTech, Ecologie Systématique Evolution, 91405 Orsay, France
| | - Elizabeta Briski
- GEOMAR Helmholtz-Zentrum für Ozeanforschung Kiel, 24105 Kiel, Germany
| | - César Capinha
- Centro de Estudos Geográficos, Instituto de Geografia e Ordenamento do Território - IGOT, Universidade de Lisboa, Lisboa, Portugal
| | - Jane A Catford
- Department of Geography, King's College London, Strand WC2B 4BG, UK; School of BioSciences, University of Melbourne, Vic 3010, Australia
| | - Tatenda Dalu
- School of Biology and Environmental Sciences, University of Mpumalanga, Nelspruit 1200, South Africa; South African Institute for Aquatic Biodiversity, Makhanda 6140, South Africa
| | - Franz Essl
- BioInvasions, Global Change, Macroecology-Group, Department of Botany and Biodiversity Research, University Vienna, Rennweg 14, 1030 Vienna, Austria
| | - Rodolphe E Gozlan
- ISEM UMR226, Université de Montpellier, CNRS, IRD, EPHE, 34090 Montpellier, France
| | - Phillip J Haubrock
- Senckenberg Research Institute and Natural History Museum, Frankfurt, Department of River Ecology and Conservation, Gelnhausen, Germany; University of South Bohemia in České Budějovice, Faculty of Fisheries and Protection of Waters, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Zátiší 728/II, 389 25 Vodňany, Czech Republic
| | - Melina Kourantidou
- Woods Hole Oceanographic Institution, Marine Policy Center, Woods Hole, MA 02543, United States; Institute of Marine Biological Resources and Inland Waters, Hellenic Center for Marine Research, Athens 164 52, Greece; University of Southern Denmark, Department of Sociology, Environmental and Business Economics, Esbjerg 6705, Denmark
| | - Andrew M Kramer
- Department of Integrative Biology, University of South Florida, Tampa, FL 33620, United States
| | - David Renault
- Univ Rennes, CNRS, ECOBIO [(Ecosystèmes, biodiversité, évolution)], - UMR 6553, F 35000 Rennes, France; Institut Universitaire de France, 1 Rue Descartes, 75231 Paris cedex 05, France
| | - Ryan J Wasserman
- Department of Zoology and Entomology, Rhodes University, Makhanda 6140, South Africa; South African Institute for Aquatic Biodiversity, Makhanda 6140, South Africa
| | - Franck Courchamp
- Université Paris-Saclay, CNRS, AgroParisTech, Ecologie Systématique Evolution, 91405 Orsay, France
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Palma E, Vesk PA, White M, Baumgartner JB, Catford JA. Plant functional traits reflect different dimensions of species invasiveness. Ecology 2021; 102:e03317. [PMID: 33638164 DOI: 10.1002/ecy.3317] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/21/2020] [Revised: 11/18/2020] [Accepted: 12/06/2020] [Indexed: 12/16/2022]
Abstract
Trait-based invasiveness studies typically categorize exotic species as invasive or noninvasive, implicitly assuming species form two homogenous groups. However, species can become invasive in different ways (e.g., high abundance, fast spread), likely relying on different functional traits to do so. As such, binary classification may obscure traits associated with invasiveness. We tested whether (1) the way in which invasiveness is quantified influences its correlation with functional traits and (2) different demography-based metrics are related to different sets of traits. Using a case study of 251 herbs exotic to Victoria, Australia, we quantified species' invasiveness using 10 metrics: four continuous, demography-based dimensions of invasiveness (spread rate, local abundance, geographic and environmental range sizes) and six binary classifications of invasiveness (based on alternative sources and invasion criteria). We examined the correlation between species' invasiveness and a set of four traits known to relate to plant demography and invasion. Then, we examined whether different demographic dimensions of invasiveness were better explained by different sets of traits. We found that the way invasiveness was quantified was important: different traits were linked with different invasiveness metrics, and some traits showed opposite effects across metrics. Species with fast spread were either tall with small seeds (i.e., good colonizers), or had heavy, animal-dispersed seeds. Plants with a large environmental range had greater plasticity for some traits. Locally abundant plants had low SLA and heavy seeds (i.e., strong competitors). Animal dispersal was also key to reach a large geographic range. No traits were consistently related to the six binary classifications. Our results indicate that exotic plants are invasive in different ways and rely on different combinations of traits to be so. Some traits (e.g., seed mass) had complex relationships with invasion: they apparently promote, hampered, or had no influence on different dimensions of invasiveness. Our findings are consistent with the notion that plant species use strategies that may be near optimal under some, but not all, ecological conditions. Compared to binary classifications of invasiveness, the use of invasiveness dimensions advances clearer hypothesis testing in invasion science.
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Affiliation(s)
- Estibaliz Palma
- School of BioSciences, The University of Melbourne, Melbourne, Victoria, 3010, Australia
| | - Peter A Vesk
- School of BioSciences, The University of Melbourne, Melbourne, Victoria, 3010, Australia
| | - Matt White
- Department of Environment, Land, Water and Planning, Arthur Rylah Institute for Environmental Research, Heidelberg, Victoria, 3084, Australia
| | - John B Baumgartner
- Centre of Excellence for Biosecurity Risk Analysis (CEBRA), The University of Melbourne, Melbourne, Victoria, 3010, Australia
| | - Jane A Catford
- School of BioSciences, The University of Melbourne, Melbourne, Victoria, 3010, Australia.,Department of Geography, King's College London, 30 Aldwych, London, WC2B 4BG, United Kingdom
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Castro WACD, Luz RC, Peres CK. Seasonality and forest edge as drivers of Tradescantia zebrina Hort. ex Bosse invasion in the Atlantic Forest. BRAZ J BIOL 2021; 82:e238403. [PMID: 33825758 DOI: 10.1590/1519-6984.238403] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2020] [Accepted: 08/05/2020] [Indexed: 11/22/2022] Open
Abstract
As a result of biodiversity and ecosystem service losses associated with biological invasions, there has been growing interest in basic and applied research on invasive species aiming to improve management strategies. Tradescantia zebrina is a herbaceous species increasingly reported as invasive in the understory of disturbed forest ecosystems. In this study, we assess the effect of spatial and seasonal variation on biological attributes of this species in the Atlantic Forest. To this end, we measured attributes of T. zebrina associated with plant growth and stress in the four seasons at the forest edge and in the forest interior of invaded sites in the Iguaçu National Park, Southern Brazil. The invasive plant had higher growth at the forest edge than in the forest interior and lower leaf asymmetry and herbivory in the winter than in the summer. Our findings suggest that the forest edge environment favours the growth of T. zebrina. This invasive species is highly competitive in the understory of semi-deciduous seasonal forests all over the year. Our study contributes to the management of T. zebrina by showing that the summer is the best season for controlling this species.
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Affiliation(s)
- W A Chiba de Castro
- Universidade Federal da Integração Latino-Americana - UNILA, Instituto Latino-Americano de Ciências da Vida e da Natureza, Foz do Iguaçu, PR, Brasil
| | - R C Luz
- Universidade Federal da Integração Latino-Americana - UNILA, Instituto Latino-Americano de Ciências da Vida e da Natureza, Foz do Iguaçu, PR, Brasil
| | - C K Peres
- Universidade Federal da Integração Latino-Americana - UNILA, Instituto Latino-Americano de Ciências da Vida e da Natureza, Foz do Iguaçu, PR, Brasil
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O’Neill MW, Bradley BA, Allen JM. Hotspots of invasive plant abundance are geographically distinct from hotspots of establishment. Biol Invasions 2021. [DOI: 10.1007/s10530-020-02433-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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23
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García-Díaz P, Binny RN, Anderson DP. How important is individual foraging specialisation in invasive predators for native-prey population viability? Oecologia 2021; 195:261-272. [PMID: 33416960 DOI: 10.1007/s00442-020-04814-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2020] [Accepted: 12/03/2020] [Indexed: 10/22/2022]
Abstract
Predation by invasive species is a major threat to the persistence of naïve prey. Typically, this negative effect is addressed by suppressing the population size of the invasive predator to a point where the predation pressure does not hinder the viability of the prey. However, this type of intervention may not be effective whenever a few specialised predators are the cause of the decline. We investigated the effects of varying levels of specialised invasive stoats (Mustela erminea) abundance on the long-term viability of simulated kiwi (Apteryx spp.) populations. We explored four scenarios with different proportions of highly specialised stoats, which were those that had a ≥ 0.75 probability of predating kiwi eggs and chicks if they were within their home range: (i) a stoat population composed mostly of generalists (mean: 0.5 probability of predation across the population); (ii) 5% of highly specialised stoats and the remaining being generalists; (iii) 10% of highly specialised stoats and the remaining being generalists; and, (iv) half highly specialised stoats and half generalists. We found that stoat home range sizes, rather than stoat density or the density of highly specialised stoats, was the main driver of kiwi population trends. Stoats with large home ranges were more likely to predate kiwi eggs and chicks as these were more likely to fall within a large home range. More broadly, our findings show how the daily individual ranging and foraging behaviour of an invasive predator can scale-up to shape population trends of naïve prey.
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Affiliation(s)
- Pablo García-Díaz
- Manaaki Whenua - Landcare Research, P.O. Box 69040, Lincoln, 7640, New Zealand. .,School of Biological Sciences, Zoology Building, University of Aberdeen, Aberdeen, AB24 2TZ, UK.
| | - Rachelle N Binny
- Manaaki Whenua - Landcare Research, P.O. Box 69040, Lincoln, 7640, New Zealand.,Te Pūnaha Matatini, Auckland, New Zealand
| | - Dean P Anderson
- Manaaki Whenua - Landcare Research, P.O. Box 69040, Lincoln, 7640, New Zealand
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24
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The impacts of invasive trees on the structure and composition of tropical forests show some consistent patterns but many are context dependent. Biol Invasions 2021. [DOI: 10.1007/s10530-020-02442-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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25
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Management Policies for Invasive Alien Species: Addressing the Impacts Rather than the Species. Bioscience 2020. [DOI: 10.1093/biosci/biaa139] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Effective long-term management is needed to address the impacts of invasive alien species (IAS) that cannot be eradicated. We describe the fundamental characteristics of long-term management policies for IAS, diagnose a major shortcoming, and outline how to produce effective IAS management. Key international and transnational management policies conflate addressing IAS impacts with controlling IAS populations. This serious purpose–implementation gap can preclude the development of broader portfolios of interventions to tackle IAS impacts. We posit that IAS management strategies should directly address impacts via impact-based interventions, and we propose six criteria to inform the choice of these interventions. We review examples of interventions focused on tackling IAS impacts, including IAS control, which reveal the range of interventions available and their varying effectiveness in counteracting IAS impacts. As the impacts caused by IAS increase globally, stakeholders need to have access to a broader and more effective set of tools to respond.
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26
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A closer look at invasiveness and relatedness: life histories, temperature, and establishment success of four congeners. Ecosphere 2020. [DOI: 10.1002/ecs2.3222] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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27
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Woody Plant Encroachment and the Sustainability of Priority Conservation Areas. SUSTAINABILITY 2020. [DOI: 10.3390/su12208321] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Woody encroachment is a global driver of grassland loss and management to counteract encroachment represents one of the most expensive conservation practices implemented in grasslands. Yet, outcomes of these practices are often unknown at large scales and this constrains practitioner’s ability to advance conservation. Here, we use new monitoring data to evaluate outcomes of grassland conservation on woody encroachment for Nebraska’s State Wildlife Action Plan, a statewide effort that targets management in Biologically Unique Landscapes (BULs) to conserve the state’s natural communities. We tracked woody cover trajectories for BULs and compared BUL trajectories with those in non-priority landscapes (non-BULs) to evaluate statewide and BUL-scale conservation outcomes more than a decade after BUL establishment. Statewide, woody cover increased by 256,653 ha (2.3%) from 2000–2017. Most BULs (71%) experienced unsustainable trends of grassland loss to woody encroachment; however, management appeared to significantly reduce BUL encroachment rates compared to non-BULs. Most BULs with early signs of encroachment lacked control strategies, while only one BUL with moderate levels of encroachment (Loess Canyons) showed evidence of a management-driven stabilization of encroachment. These results identify strategic opportunities for proactive management in grassland conservation and demonstrate how new monitoring technology can support large-scale adaptive management pursuits.
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Milani T, Jobbágy EG, Nuñez MA, Ferrero ME, Baldi G, Teste FP. Stealth invasions on the rise: rapid long-distance establishment of exotic pines in mountain grasslands of Argentina. Biol Invasions 2020. [DOI: 10.1007/s10530-020-02303-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Pepin KM, Smyser TJ, Davis AJ, Miller RS, McKee S, VerCauteren KC, Kendall W, Slootmaker C. Optimal spatial prioritization of control resources for elimination of invasive species under demographic uncertainty. ECOLOGICAL APPLICATIONS : A PUBLICATION OF THE ECOLOGICAL SOCIETY OF AMERICA 2020; 30:e02126. [PMID: 32167631 DOI: 10.1002/eap.2126] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Revised: 01/16/2020] [Accepted: 02/06/2020] [Indexed: 06/10/2023]
Abstract
Populations of invasive species often spread heterogeneously across a landscape, consisting of local populations that cluster in space but are connected by dispersal. A fundamental dilemma for invasive species control is how to optimally allocate limited fiscal resources across local populations. Theoretical work based on perfect knowledge of demographic connectivity suggests that targeting local populations from which migrants originate (sources) can be optimal. However, demographic processes such as abundance and dispersal can be highly uncertain, and the relationship between local population density and damage costs (damage function) is rarely known. We used a metapopulation model to understand how budget and uncertainty in abundance, connectivity, and the damage function, together impact return on investment (ROI) for optimal control strategies. Budget, observational uncertainty, and the damage function had strong effects on the optimal resource allocation strategy. Uncertainty in dispersal probability was the least important determinant of ROI. The damage function determined which resource prioritization strategy was optimal when connectivity was symmetric but not when it was asymmetric. When connectivity was asymmetric, prioritizing source populations had a higher ROI than allocating effort equally across local populations, regardless of the damage function, but uncertainty in connectivity structure and abundance reduced ROI of the optimal prioritization strategy by 57% on average depending on the control budget. With low budgets (monthly removal rate of 6.7% of population), there was little advantage to prioritizing resources, especially when connectivity was high or symmetric, and observational uncertainty had only minor effects on ROI. Allotting funding for improved monitoring appeared to be most important when budgets were moderate (monthly removal of 13-20% of the population). Our result showed that multiple sources of observational uncertainty should be considered concurrently for optimizing ROI. Accurate estimates of connectivity direction and abundance were more important than accurate estimates of dispersal rates. Developing cost-effective surveillance methods to reduce observational uncertainties, and quantitative frameworks for determining how resources should be spatially apportioned to multiple monitoring and control activities are important and challenging future directions for optimizing ROI for invasive species control programs.
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Affiliation(s)
- Kim M Pepin
- National Wildlife Research Center, USDA-APHIS, Wildlife Services, 4101 Laporte Avenue, Fort Collins, Colorado, 80521, USA
| | - Timothy J Smyser
- National Wildlife Research Center, USDA-APHIS, Wildlife Services, 4101 Laporte Avenue, Fort Collins, Colorado, 80521, USA
| | - Amy J Davis
- National Wildlife Research Center, USDA-APHIS, Wildlife Services, 4101 Laporte Avenue, Fort Collins, Colorado, 80521, USA
| | - Ryan S Miller
- Centers for Epidemiology and Animal Health, USDA-APHIS, Veterinary Services, 2150 Centre Avenue, Fort Collins, Colorado, 80526, USA
| | - Sophie McKee
- National Wildlife Research Center, USDA-APHIS, Wildlife Services, 4101 Laporte Avenue, Fort Collins, Colorado, 80521, USA
- Department of Economics, Colorado State University, Fort Collins, Colorado, 80523, USA
| | - Kurt C VerCauteren
- National Wildlife Research Center, USDA-APHIS, Wildlife Services, 4101 Laporte Avenue, Fort Collins, Colorado, 80521, USA
| | - William Kendall
- Colorado Cooperative Fish and Wildlife Research Unit, U.S. Geological Survey, Colorado State University, 1484 Campus Delivery, Fort Collins, Colorado, 80523, USA
| | - Chris Slootmaker
- National Wildlife Research Center, USDA-APHIS, Wildlife Services, 4101 Laporte Avenue, Fort Collins, Colorado, 80521, USA
- Mountain Data Group, 115 N. College Avenue, Suite 220, Fort Collins, Colorado, 80524, USA
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Lambin X, Burslem D, Caplat P, Cornulier T, Damasceno G, Fasola L, Fidelis A, García-Díaz P, Langdon B, Linardaki E, Montti L, Moyano J, Nuñez MA, Palmer SC, Pauchard A, Phimister E, Pizarro JC, Powell P, Raffo E, Rodriguez-Jorquera IA, Roesler I, Tomasevic JA, Travis JM, Verdugo C. CONTAIN: Optimising the long-term management of invasive alien species using adaptive management. NEOBIOTA 2020. [DOI: 10.3897/neobiota.59.52022] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Invasive Alien Species (IAS) threaten biodiversity, ecosystem functions and services, modify landscapes and impose costs to national economies. Management efforts are underway globally to reduce these impacts, but little attention has been paid to optimising the use of the scarce available resources when IAS are impossible to eradicate, and therefore population reduction and containment of their advance are the only feasible solutions.CONTAIN, a three-year multinational project involving partners from Argentina, Brazil, Chile and the UK, started in 2019. It develops and tests, via case study examples, a decision-making toolbox for managing different problematic IAS over large spatial extents. Given that vast areas are invaded, spatial prioritisation of management is necessary, often based on sparse data. In turn, these characteristics imply the need to make the best decisions possible under likely heavy uncertainty.Our decision-support toolbox will integrate the following components:(i) the relevant environmental, social, cultural, and economic impacts, including their spatial distribution;(ii) the spatio-temporal dynamics of the target IAS (focusing on dispersal and population recovery);(iii) the relationship between the abundance of the IAS and its impacts;(iv) economic methods to estimate both benefits and costs to inform the spatial prioritisation of cost-effective interventions.To ensure that our approach is relevant for different contexts in Latin America, we are working with model species having contrasting modes of dispersal, which have large environmental and/or economic impacts, and for which data already exist (invasive pines, privet, wasps, and American mink). We will also model plausible scenarios for data-poor pine and grass species, which impact local people in Argentina, Brazil and Chile.We seek the most effective strategic management actions supported by empirical data on the species’ population dynamics and dispersal that underpin reinvasion, and on intervention costs in a spatial context. Our toolbox serves to identify key uncertainties driving the systems, and especially to highlight gaps where new data would most effectively reduce uncertainty on the best course of action. The problems we are tackling are complex, and we are embedding them in a process of co-operative adaptive management, so that both researchers and managers continually improve their effectiveness by confronting different models to data. Our project is also building research capacity in Latin America by sharing knowledge/information between countries and disciplines (i.e., biological, social and economic), by training early-career researchers through research visits, through our continuous collaboration with other researchers and by training and engaging stakeholders via workshops. Finally, all these activities will establish an international network of researchers, managers and decision-makers. We expect that our lessons learned will be of use in other regions of the world where complex and inherently context-specific realities shape how societies deal with IAS.
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Strayer DL. Non-native species have multiple abundance-impact curves. Ecol Evol 2020; 10:6833-6843. [PMID: 32724554 PMCID: PMC7381559 DOI: 10.1002/ece3.6364] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Revised: 04/16/2020] [Accepted: 04/21/2020] [Indexed: 01/08/2023] Open
Abstract
The abundance-impact curve is helpful for understanding and managing the impacts of non-native species. Abundance-impact curves can have a wide range of shapes (e.g., linear, threshold, sigmoid), each with its own implications for scientific understanding and management. Sometimes, the abundance-impact curve has been viewed as a property of the species, with a single curve for a species. I argue that the abundance-impact curve is determined jointly by a non-native species and the ecosystem it invades, so that a species may have multiple abundance-impact curves. Models of the impacts of the invasive mussel Dreissena show how a single species can have multiple, noninterchangeable abundance-impact curves. To the extent that ecosystem characteristics determine the abundance-impact curve, abundance-impact curves based on horizontal designs (space-for-time substitution) may be misleading and should be used with great caution, it at all. It is important for scientists and managers to correctly specify the abundance-impact curve when considering the impacts of non-native species. Diverting attention from the invading species to the invaded ecosystem, and especially to the interaction between species and ecosystem, could improve our understanding of how non-native species affect ecosystems and reduce uncertainty around the effects of management of populations of non-native species.
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Affiliation(s)
- David L. Strayer
- Cary Institute of Ecosystem StudiesMillbrookNYUSA
- Graham Sustainability InstituteUniversity of MichiganAnn ArborMIUSA
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32
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DeRoy EM, Scott R, Hussey NE, MacIsaac HJ. Density dependence mediates the ecological impact of an invasive fish. DIVERS DISTRIB 2020. [DOI: 10.1111/ddi.13063] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Affiliation(s)
- Emma M. DeRoy
- Great Lakes Institute for Environmental Research University of Windsor Windsor Ontario Canada
| | - Ryan Scott
- Department of Computer Science University of Windsor Windsor Ontario Canada
| | - Nigel E. Hussey
- Department of Biological Sciences University of Windsor Windsor Ontario Canada
| | - Hugh J. MacIsaac
- Great Lakes Institute for Environmental Research University of Windsor Windsor Ontario Canada
- School of Ecology and Environmental Science Yunnan University Kunming China
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Dickey JWE, Cuthbert RN, South J, Britton JR, Caffrey J, Chang X, Crane K, Coughlan NE, Fadaei E, Farnsworth KD, Ismar-Rebitz SMH, Joyce PWS, Julius M, Laverty C, Lucy FE, MacIsaac HJ, McCard M, McGlade CLO, Reid N, Ricciardi A, Wasserman RJ, Weyl OLF, Dick JTA. On the RIP: using Relative Impact Potential to assess the ecological impacts of invasive alien species. NEOBIOTA 2020. [DOI: 10.3897/neobiota.55.49547] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Invasive alien species continue to arrive in new locations with no abatement in rate, and thus greater predictive powers surrounding their ecological impacts are required. In particular, we need improved means of quantifying the ecological impacts of new invasive species under different contexts. Here, we develop a suite of metrics based upon the novel Relative Impact Potential (RIP) metric, combining the functional response (consumer per capita effect), with proxies for the numerical response (consumer population response), providing quantification of invasive species ecological impact. These metrics are comparative in relation to the eco-evolutionary baseline of trophically analogous natives, as well as other invasive species and across multiple populations. Crucially, the metrics also reveal how impacts of invasive species change under abiotic and biotic contexts. While studies focused solely on functional responses have been successful in predictive invasion ecology, RIP retains these advantages while adding vital other predictive elements, principally consumer abundance. RIP can also be combined with propagule pressure to quantify overall invasion risk. By highlighting functional response and numerical response proxies, we outline a user-friendly method for assessing the impacts of invaders of all trophic levels and taxonomic groups. We apply the metric to impact assessment in the face of climate change by taking account of both changing predator consumption rates and prey reproduction rates. We proceed to outline the application of RIP to assess biotic resistance against incoming invasive species, the effect of evolution on invasive species impacts, application to interspecific competition, changing spatio-temporal patterns of invasion, and how RIP can inform biological control. We propose that RIP provides scientists and practitioners with a user-friendly, customisable and, crucially, powerful technique to inform invasive species policy and management.
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Sapsford SJ, Brandt AJ, Davis KT, Peralta G, Dickie IA, Gibson RD, Green JL, Hulme PE, Nuñez MA, Orwin KH, Pauchard A, Wardle DA, Peltzer DA. Towards a framework for understanding the context dependence of impacts of non‐native tree species. Funct Ecol 2020. [DOI: 10.1111/1365-2435.13544] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Sarah J. Sapsford
- School of Biological Sciences University of Canterbury Christchurch New Zealand
| | | | - Kimberley T. Davis
- Department of Ecosystem and Conservation Sciences University of Montana Missoula MT USA
| | - Guadalupe Peralta
- School of Biological Sciences University of Canterbury Christchurch New Zealand
- Manaaki Whenua Landcare Research Lincoln New Zealand
| | - Ian A. Dickie
- School of Biological Sciences University of Canterbury Christchurch New Zealand
| | - Robert D. Gibson
- Bio‐Protection Research Centre Lincoln University Lincoln New Zealand
| | - Joanna L. Green
- School of Biological Sciences University of Canterbury Christchurch New Zealand
| | - Philip E. Hulme
- Bio‐Protection Research Centre Lincoln University Lincoln New Zealand
| | - Martin A. Nuñez
- Grupo de Ecología de Invasiones INIBIOMA CONICET‐Universidad Nacional del Comahue Bariloche Argentina
| | - Kate H. Orwin
- Manaaki Whenua Landcare Research Lincoln New Zealand
| | - Anibal Pauchard
- Laboratorio de Invasiones Biológicas (LIB) Facultad de Ciencias Forestales Universidad de Concepción Concepción Chile
- Institute of Ecology and Biodiversity (IEB) Santiago Chile
| | - David A. Wardle
- Asian School of the Environment Nanyang Technological University Singapore
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35
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Richness, phylogenetic diversity, and abundance all have positive effects on invader performance in an arid ecosystem. Ecosphere 2020. [DOI: 10.1002/ecs2.3045] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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37
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Lopez LK, Davis AR, Wong MYL. The effect of density on aggression between a highly invasive and native fish. Ethology 2019. [DOI: 10.1111/eth.12941] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Laura K. Lopez
- LSA Ecology and Evolutionary Biology University of Michigan Ann Arbor MI USA
- School of Biological Sciences University of Wollongong Wollongong NSW Australia
| | - Andrew R. Davis
- School of Biological Sciences University of Wollongong Wollongong NSW Australia
| | - Marian Y. L. Wong
- School of Biological Sciences University of Wollongong Wollongong NSW Australia
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38
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Using a natural population collapse of an invasive species to assess the benefits of invader control for native species. Biol Invasions 2019. [DOI: 10.1007/s10530-019-02015-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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39
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Pearse IS, Sofaer HR, Zaya DN, Spyreas G. Non-native plants have greater impacts because of differing per-capita effects and nonlinear abundance-impact curves. Ecol Lett 2019; 22:1214-1220. [PMID: 31112014 DOI: 10.1111/ele.13284] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2018] [Revised: 01/27/2019] [Accepted: 04/10/2019] [Indexed: 12/15/2022]
Abstract
Invasive, non-native species can have tremendous impacts on biotic communities, where they reduce the abundance and diversity of local species. However, it remains unclear whether impacts of non-native species arise from their high abundance or whether each non-native individual has a disproportionate impact - that is, a higher per-capita effect - on co-occurring species compared to impacts by native species. Using a long-term study of wetlands, we asked how temporal variation in dominant native and non-native plants impacted the abundance and richness of other plants in the recipient community. Non-native plants reached higher abundances than natives and had greater per-capita effects. The abundance-impact relationship between plant abundance and richness was nonlinear. Compared with increasing native abundance, increasing non-native abundance was associated with steeper declines in richness because of greater per-capita effects and nonlinearities in the abundance-impact relationship. Our study supports eco-evolutionary novelty of non-natives as a driver of their outsized impacts on communities.
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Affiliation(s)
- Ian S Pearse
- U.S. Geological Survey Fort Collins Science Center, 2150 Centre Ave #C, Ft Collins, CO, 80521, USA
| | - Helen R Sofaer
- U.S. Geological Survey Fort Collins Science Center, 2150 Centre Ave #C, Ft Collins, CO, 80521, USA
| | - David N Zaya
- Illinois Natural History Survey, University of Illinois Urbana-Champaign, 1816 S. Oak St, Champaign, IL, 61820, USA
| | - Greg Spyreas
- Illinois Natural History Survey, University of Illinois Urbana-Champaign, 1816 S. Oak St, Champaign, IL, 61820, USA
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40
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Abstract
To predict the threat of biological invasions to native species, it is critical that we understand how increasing abundance of invasive alien species (IAS) affects native populations and communities. The form of this relationship across taxa and ecosystems is unknown, but is expected to depend strongly on the trophic position of the IAS relative to the native species. Using a global metaanalysis based on 1,258 empirical studies presented in 201 scientific publications, we assessed the shape, direction, and strength of native responses to increasing invader abundance. We also tested how native responses varied with relative trophic position and for responses at the population vs. community levels. As IAS abundance increased, native populations declined nonlinearly by 20%, on average, and community metrics declined linearly by 25%. When at higher trophic levels, invaders tended to cause a strong, nonlinear decline in native populations and communities, with the greatest impacts occurring at low invader abundance. In contrast, invaders at the same trophic level tended to cause a linear decline in native populations and communities, while invaders at lower trophic levels had no consistent impacts. At the community level, increasing invader abundance had significantly larger effects on species evenness and diversity than on species richness. Our results show that native responses to invasion depend critically on invasive species' abundance and trophic position. Further, these general abundance-impact relationships reveal how IAS impacts are likely to develop during the invasion process and when to best manage them.
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Assessing the utility of aerial imagery to quantify the density, age structure and spatial pattern of alien conifer invasions. Biol Invasions 2019. [DOI: 10.1007/s10530-019-01960-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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García-Díaz P, Anderson DP. Evaluating the effects of landscape structure on the recovery of an invasive vertebrate after population control. LANDSCAPE ECOLOGY 2019; 34:615-626. [PMID: 31857743 PMCID: PMC6923137 DOI: 10.1007/s10980-019-00796-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2017] [Accepted: 03/05/2019] [Indexed: 06/10/2023]
Abstract
CONTEXT Effective landscape control of invasive species is context-dependent due to the interplay between the landscape structure, local population dynamics, and metapopulation processes. We use a modelling approach incorporating these three elements to explore the drivers of recovery of populations of invasive species after control. OBJECTIVES We aim to improve our understanding of the factors influencing the landscape-level control of invasive species. METHODS We focus on the case study of invasive brushtail possum (Trichosurus vulpecula) control in New Zealand. We assess how 13 covariates describing the landscape, patch, and population features influence the time of population recovery to a management density threshold of two possums/ha. We demonstrate the effects of those covariates on population recovery under three scenarios of population growth: logistic growth, strong Allee effects, and weak Allee effects. RESULTS Recovery times were rapid regardless of the simulated population dynamics (average recovery time < 2 years), although populations experiencing Allee effects took longer to recover than those growing logistically. Our results indicate that habitat availability and patch area play a key role in reducing times to recovery after control, and this relationship is consistent across the three simulated scenarios. CONCLUSIONS The control of invasive possum populations in patchy landscapes would benefit from a patch-level management approach (considering each patch as an independent management unit), whereas simple landscapes would be better controlled by taking a landscape-level view (the landscape as the management unit). Future research should test the predictions of our models with empirical data to refine control operations.
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44
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Nottingham CM, Glen AS, Stanley MC. Proactive development of invasive species damage functions prior to species reintroduction. Glob Ecol Conserv 2019. [DOI: 10.1016/j.gecco.2019.e00534] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
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45
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Linear and non-linear effects of goldenrod invasions on native pollinator and plant populations. Biol Invasions 2018. [DOI: 10.1007/s10530-018-1874-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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46
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Sofaer HR, Jarnevich CS, Pearse IS. The relationship between invader abundance and impact. Ecosphere 2018. [DOI: 10.1002/ecs2.2415] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Affiliation(s)
- Helen R. Sofaer
- U.S. Geological Survey, Fort Collins Science Center Fort Collins Colorado 80526 USA
| | | | - Ian S. Pearse
- U.S. Geological Survey, Fort Collins Science Center Fort Collins Colorado 80526 USA
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47
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Abstract
Mismatches between invasive species management policies and ecological knowledge can lead to profound societal consequences. For this reason, natural resource agencies have adopted the scientifically-based density-impact invasive species curve to guide invasive species management. We use the density-impact model to evaluate how well management policies for a native invader (Juniperus virginiana) match scientific guidelines. Juniperus virginiana invasion is causing a sub-continental regime shift from grasslands to woodlands in central North America, and its impacts span collapses in endemic diversity, heightened wildfire risk, and crashes in grazing land profitability. We (1) use land cover data to identify the stage of Juniperus virginiana invasion for three ecoregions within Nebraska, USA, (2) determine the range of invasion stages at individual land parcel extents within each ecoregion based on the density-impact model, and (3) determine policy alignment and mismatches relative to the density-impact model in order to assess their potential to meet sustainability targets and avoid societal impacts as Juniperus virginiana abundance increases. We found that nearly all policies evidenced doublethink and policy-ecology mismatches, for instance, promoting spread of Juniperus virginiana regardless of invasion stage while simultaneously managing it as a native invader in the same ecoregion. Like other invasive species, theory and literature for this native invader indicate that the consequences of invasion are unlikely to be prevented if policies fail to prioritize management at incipient invasion stages. Theory suggests a more realistic approach would be to align policy with the stage of invasion at local and ecoregion management scales. There is a need for scientists, policy makers, and ecosystem managers to move past ideologies governing native versus non-native invader classification and toward a framework that accounts for the uniqueness of native species invasions, their anthropogenic drivers, and their impacts on ecosystem services.
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Affiliation(s)
- Caleb P. Roberts
- Department of Agronomy & Horticulture, University of Nebraska, Lincoln, NE, United States of America
- Nebraska Cooperative Fish and Wildlife Research Unit, School of Natural Resources, University of Nebraska, Lincoln, NE, United States of America
- * E-mail:
| | - Daniel R. Uden
- Nebraska Cooperative Fish and Wildlife Research Unit, School of Natural Resources, University of Nebraska, Lincoln, NE, United States of America
| | - Craig R. Allen
- U.S. Geological Survey, Nebraska Cooperative Fish and Wildlife Research Unit, School of Natural Resources, University of Nebraska, Lincoln, NE, United States of America
| | - Dirac Twidwell
- Department of Agronomy & Horticulture, University of Nebraska, Lincoln, NE, United States of America
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48
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Woodill AJ, Nakamoto ST, Kawabata AM, Leung P. To Spray or Not to Spray: A Decision Analysis of Coffee Berry Borer in Hawaii. INSECTS 2017; 8:insects8040116. [PMID: 29065464 PMCID: PMC5746799 DOI: 10.3390/insects8040116] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/19/2017] [Revised: 10/13/2017] [Accepted: 10/17/2017] [Indexed: 11/19/2022]
Abstract
Integrated pest management strategies were adopted to combat the coffee berry borer (CBB) after its arrival in Hawaii in 2010. A decision tree framework is used to model the CBB integrated pest management recommendations, for potential use by growers and to assist in developing and evaluating management strategies and policies. The model focuses on pesticide spraying (spray/no spray) as the most significant pest management decision within each period over the entire crop season. The main result from the analysis suggests the most important parameter to maximize net benefit is to ensure a low initial infestation level. A second result looks at the impact of a subsidy for the cost of pesticides and shows a typical farmer receives a positive net benefit of $947.17. Sensitivity analysis of parameters checks the robustness of the model and further confirms the importance of a low initial infestation level vis-a-vis any level of subsidy. The use of a decision tree is shown to be an effective method for understanding integrated pest management strategies and solutions.
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Affiliation(s)
- A John Woodill
- Department of Natural Resources and Environmental Management, College of Tropical Agriculture and Human Resources (CTAHR), University of Hawaii at Manoa, Honolulu, HI 96822, USA.
- Department of Economics, College of Arts and Sciences, University of Hawaii at Manoa, Honolulu 96822, HI, USA.
| | - Stuart T Nakamoto
- Department of Human Nutrition, Food and Animal Sciences, CTAHR, University of Hawaii at Manoa, Honolulu, HI 96822, USA.
| | - Andrea M Kawabata
- Department of Tropical Plant and Soil Sciences, CTAHR, University of Hawaii at Manoa, Honolulu, HI 96822, USA.
| | - PingSun Leung
- Department of Natural Resources and Environmental Management, College of Tropical Agriculture and Human Resources (CTAHR), University of Hawaii at Manoa, Honolulu, HI 96822, USA.
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49
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Hone J, Drake VA, Krebs CJ. The Effort–Outcomes Relationship in Applied Ecology: Evaluation and Implications. Bioscience 2017. [DOI: 10.1093/biosci/bix091] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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50
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Strayer DL, D'Antonio CM, Essl F, Fowler MS, Geist J, Hilt S, Jarić I, Jöhnk K, Jones CG, Lambin X, Latzka AW, Pergl J, Pyšek P, Robertson P, Schmalensee M, Stefansson RA, Wright J, Jeschke JM. Boom‐bust dynamics in biological invasions: towards an improved application of the concept. Ecol Lett 2017; 20:1337-1350. [DOI: 10.1111/ele.12822] [Citation(s) in RCA: 65] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2016] [Revised: 12/19/2016] [Accepted: 07/20/2017] [Indexed: 01/08/2023]
Affiliation(s)
- David L. Strayer
- Cary Institute of Ecosystem Studies Millbrook NY USA
- Freie Universität Berlin Berlin Germany
| | - Carla M. D'Antonio
- Department of Ecology, Evolution, and Marine Biology University of California Santa Barbara Santa Barbara CA USA
| | - Franz Essl
- Division of Conservation Vegetation and Landscape Ecology University of Vienna Vienna Austria
| | - Mike S. Fowler
- Department of Biosciences Swansea University Singleton Park UK
| | - Juergen Geist
- Aquatic Systems Biology Unit Technical University of Munich Freising Germany
| | - Sabine Hilt
- Leibniz‐Institute of Freshwater Ecology and Inland Fisheries (IGB) Berlin Germany
| | - Ivan Jarić
- Leibniz‐Institute of Freshwater Ecology and Inland Fisheries (IGB) Berlin Germany
- Institute for Multidisciplinary Research University of Belgrade BelgradeSerbia
| | - Klaus Jöhnk
- Commonwealth Scientific and Industrial Research Organisation Land and Water Black Mountain Canberra Australia
| | | | - Xavier Lambin
- School of Biological Sciences University of Aberdeen Aberdeen UK
| | - Alexander W. Latzka
- Department of Natural Resource Sciences McGill University‐MacDonald Campus Saint‐Anne‐de‐Bellevue Canada
| | - Jan Pergl
- Institute of Botany Department of Invasion Ecology The Czech Academy of Sciences Průhonice Czech Republic
| | - Petr Pyšek
- Department of Invasion Ecology Institute of Botany The Czech Academy of Sciences Průhonice Czech Republic
- Department of Ecology Faculty of Science Charles University Viničná 7 Prague 2 Czech Republic
- Centre for Invasion Biology Department of Botany & Zoology Stellenbosch University Matieland7602 South Africa
| | | | - Menja Schmalensee
- West Iceland Nature Research Centre Stykkishólmur Iceland
- Faculty of Life and Environmental Sciences University of Iceland Reykjavík Iceland
| | | | | | - Jonathan M. Jeschke
- Freie Universität Berlin Berlin Germany
- Leibniz‐Institute of Freshwater Ecology and Inland Fisheries (IGB) Berlin Germany
- Berlin‐Brandenburg Institute of Advanced Biodiversity Research (BBIB) Berlin Germany
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