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Invasive plant species represent a serious threat to biodiversity and landscape as well as human health and socio-economy. To\udsuccessfully fight plant invasions, new methods enabling fast and efficient monitoring, such as remote sensing, are needed. In an\udongoing project, optical remote sensing (RS) data of different origin (satellite, aerial and UAV), spectral (panchromatic,\udmultispectral and color), spatial (very high to medium) and temporal resolution, and various technical approaches (object-, pixelbased\udand combined) are tested to choose the best strategies for monitoring of four invasive plant species (giant hogweed, black\udlocust, tree of heaven and exotic knotweeds). In our study, we address trade-offs between spectral, spatial and temporal resolutions\udrequired for balance between the precision of detection and economic feasibility. For the best results, it is necessary to choose best\udcombination of spatial and spectral resolution and phenological stage of the plant in focus. For species forming distinct\udinflorescences such as giant hogweed iterative semi-automated object-oriented approach was successfully applied even for low\udspectral resolution data (if pixel size was sufficient) whereas for lower spatial resolution satellite imagery or less distinct species with\udcomplicated architecture such as knotweed, combination of pixel and object based approaches was used. High accuracies achieved\udfor very high resolution data indicate the possible application of described methodology for monitoring invasions and their long-term\uddynamics elsewhere, making management measures comparably precise, fast and efficient. This knowledge serves as a basis for\udprediction, monitoring and prioritization of management targets

the international archives of the photogrammetry, remote sensing and spatial information sciences/international archives of the photogrammetry, remote sensing and spatial information sciences

DOES THE DATA RESOLUTION/ORIGIN MATTER? SATELLITE, AIRBORNE AND UAV IMAGERY TO TACKLE PLANT INVASIONS