Corrigendum: ILTER – The International Long-Term Ecological Research Network as a Platform for Global Coastal and Ocean Observation

Citation: Muelbert JH, Nidzieko NJ, Acosta ATR, Beaulieu SE, Bernardino AF, Boikova E, Bornman TG, Cataletto B, Deneudt K, Eliason E, Kraberg A, Nakaoka M, Pugnetti A, Ragueneau O, Scharfe M, Soltwedel T, Sosik HM, Stanisci A, Stefanova K, Stéphan P, Stier A, Wikner J and Zingone A (2020) Corrigendum: ILTER – The International Long-Term Ecological Research Network as a Platform for Global Coastal and Ocean Observation. Front. Mar. Sci. 6:819. doi: 10.3389/fmars.2019.00819 Corrigendum: ILTER – The International Long-Term Ecological Research Network as a Platform for Global Coastal and Ocean Observation


ILTER -The International Long-Term Ecological Research Network as a Platform for Global Coastal and Ocean Observation
by Muelbert, J. H., Nidzieko, N. J., Acosta, A. T. R., Beaulieu, S. E., Bernardino, A. F., Boikova, E., et al. (2019). Front. Mar. Sci. 6:527. doi: 10.3389/fmars.2019.00527 In the original article, there was a mistake in the legend for Figure 1 as published. After publication, it was brought to the authors' attention that DEIMS-SDR also included not-LTER sites (Wohner et al., 2019) and the so called LTER "parent sites, " at the same hierarchical level of the research sites they are made of, generating some duplicates. While reviewing the site list, it was found that one site was duplicated and seven LTER sites were not included. Therefore, the published map included seven not-ILTER sites, 10 parent sites, and one duplicated site, all of which have now been removed.
The correct legend appears below.

Strengths Weakness
• Multi-and interdisciplinary • Links with a wide range of global/regional processes and initiatives • Platform for discussion among experts on oceanographical and ecological themes • Multi-institutional cooperation • Metadata organized and updated in DEIMS-SDR • Socio-ecological aspects developed in the ILTER mission • ILTER-CMS monitor Physical, Biochemical, and Biological/Ecological EOVs • Potential for large syntheses and detection of long-term trends across sites, spatial and temporal scales • Potential for developing and testing concepts and theoretical frameworks • A consolidated data policy and information availability system • Quick response to methodological/technological advances, standardization and implementation of these technologies on a large spatial scale and link to existing time series and spatial data • ILTER is mostly terrestrial, overarching strategy and conceptual framework are broad and not specific for coastal and marine environments. • Variables to be measured, methodologies, technological development and sampling schemes are not homogeneous among sites • The socio-ecological aspects are not yet fully developed • Harmonization of data and metadata for coastal and marine environments is still incomplete • The geographic location of time series has notable gaps • The standardization of variables gathered has not been accomplished, and EEVs or EOVs coverage is inconsistent • Intercalibration of approaches and methodologies is lacking • The data management is relatively poor at several sites • Some data linked to ecological research activities not immediately available

Opportunities Threats
• Optimal sites for experiments on observation and pilot integrated biological observatories • Promote the use of new technologies for ocean observation and compare the information that technologies make available • Merging frameworks from different global research and monitoring initiatives, producing guidelines for future site-based long-term research and monitoring marine and coastal ecosystems • Support the use of costly infrastructure, fostering cross-initiative collaborative research • Monitoring EOVs at a global scale at 115 discrete sites • Improvement of models and predictions of possible future developments • Platform for citizen science • Continuous training of new generations of scientists, ensuring the transfer of knowledge • Missing link with society, hampering the identification of questions with societal relevance • Reduction in focus on in-situ sampling as a consequence of linking with more technological or model-centric networks • Inadequate training of new generation of researchers with relevant skills set (e.g., taxonomy, data science, database management), able to recognize the relevance of these kinds of activities and maintain LTER in the future • Reduction of ILTER activities at some sites leading to temporal and spatial gaps.
Further, in the original article, there was a mistake in the legend for Table S1 as published. The table included seven not-ILTER sites, 10 parent sites, one duplicated site and excluded seven LTER sites. The correct legend appears below.
" Table S1. ILTER-CMS site name, location, year of establishment and habitat type. Site name, geographic coordinates and establishment obtained from DEIMS (https:// deims.org/site/list) on 2nd September 2019. Habitat type was obtained with a survey conducted with ILTER-CMS site managers for this study. Negative longitudes refer to West, negative latitudes to South." Additionally, there was a mistake in Figure 1 as published. Locations on the map included the seven not-ILTER sites, 10 parent sites, and one duplicated site and excluded the seven LTER sites. The corrected Figure 1 appears above.
There was also a mistake in Table 1 as published. The inclusion of not-LTER and parent sites at the same hierarchical level on DEIMS-SDR, and the repetition of one site lead the authors to list "130" sites in the ILTER-CMS. Added to the seven LTER sites not listed, the correct number of ILTER-CMS sites is "115." The corrected Table 1 appears above.
The inclusion of not-LTER sites and parent sites on DEIMS-SDR and the duplicated site lead the authors to inform the existence of "70 coastal and 60 marine sites" in the ILTER. After these corrections and the inclusion of the seven missing LTER sites, the correct number is "63 coastal and 52 marine sites" in the ILTER.
A correction has been made to the section The Coastal and Marine ILTER Sites (ILTER-CMS), paragraph one: "There are 63 coastal and 52 marine sites in the ILTER (Figure 1 and Table S1). Based on classifications in the ILTER's DEIMS-SDR, coastal sites include sand dunes and beaches, lagoons, estuaries, river deltas, fjords, salt marshes and mangroves, while marine sites are located on continental shelves and oceanic islands (Figure 2). Nearly half of the CMS include data records that precede the formal establishment of the ILTER (Figure 3). For example, the "Dutch Wadden Sea Area" in the Netherlands has records dating to 1872. Observations began in the Western Gulf of Finland in 1902; the Mar Piccolo of Taranto, Italy in 1914; and Shirahama, Japan in 1922. The length of these observations enhances the opportunities for ILTER-CMS to contribute to documenting global change."