Adam Eindride Naas

• Naas, Adam Eindride; Keetz, Lasse Torben; Halvorsen, Rune; Horvath, Peter; Mienna, Ida Marielle & Simensen, Trond [Show all 7 contributors for this article] (2024). Choice of predictors and complexity for ecosystem distribution models: effects on performance and transferability. Ecography. ISSN 0906-7590. doi: 10.1111/ecog.07269.
• Naas, Adam Eindride; Keetz, Lasse Torben; Halvorsen, Rune; Horvath, Peter; Mienna, Ida Marielle & Simensen, Trond [Show all 7 contributors for this article] (2024). Choice of predictors and complexity for ecosystem distribution models: effects on performance and transferability. Ecography. ISSN 0906-7590. p. 1–14. doi: 10.1111/ecog.07269.
• Naas, Adam Eindride; Halvorsen, Rune; Horvath, Peter; Wollan, Anders Kvalvåg; Bratli, Harald & Brynildsrud, Katrine Marie [Show all 16 contributors for this article] (2023). What explains inconsistencies in field-based ecosystem mapping? Applied Vegetation Science. ISSN 1402-2001. 26(1). doi: 10.1111/avsc.12715. Full text in Research Archive Show summary

  Questions Field-based ecosystem mapping is prone to observer bias, typically resulting in a mismatch between maps made by different mappers, that is, inconsistency. Experimental studies testing the influence of site, mapping scale, and differences in experience level on inconsistency in field-based ecosystem mapping are lacking. Here, we study how inconsistencies in field-based ecosystem maps depend on these factors. Location Iškoras and Guollemuorsuolu, northeastern Norway, and Landsvik and Lygra, western Norway. Methods In a balanced experiment, four sites were field-mapped wall-to-wall to scales 1:5000 and 1:20,000 by 12 mappers, representing three experience levels. Thematic inconsistency was calculated by overlay analysis of map pairs from the same site, mapped to the same scale. We tested for significant differences between sites, scales, and experience-level groups. Principal components analysis was used in an analysis of additional map inconsistencies and their relationships with site, scale and differences in experience level and time consumption were analysed with redundancy analysis. Results On average, thematic inconsistency was 51%. The most important predictor for thematic inconsistency, and for all map inconsistencies, was site. Scale and its interaction with site predicted map inconsistencies, but only the latter were important for thematic inconsistency. The only experience-level group that differed significantly from the mean thematic inconsistency was that of the most experienced mappers, with nine percentage points. Experience had no significant effect on map inconsistency as a whole. Conclusion Thematic inconsistency was high for all but the dominant thematic units, with potentially adverse consequences for mapping ecosystems that are fragmented or have low coverage. Interactions between site and mapping system properties are considered the main reasons why no relationships between scale and thematic inconsistency were observed. More controlled experiments are needed to quantify the effect of other factors on inconsistency in field-based mapping.

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• Bryn, Anders; Koren Berntsen, Terje; Horvath, Peter; Isaksen, Ketil; Liahjell, Gunnar Thorsen & Naas, Adam Eindride [Show all 10 contributors for this article] (2024). På vei mot nye høyder: tre- og skoggrensene stiger. Arr - Idéhistorisk tidsskrift. ISSN 0802-7005. p. 87–100.
• Bryn, Anders; Horvath, Peter; Naas, Adam Eindride & Tjessem, Ingrid Vesterdal (2023). Kartlegging av naturtyper etter Natur i Norge (NiN). Biolog. ISSN 0801-0722. p. 16–23.
• Tjessem, Ingrid Vesterdal; Bryn, Anders; Horvath, Peter & Naas, Adam Eindride (2023). Changing treeline: A 150-year perspective​.
• Bryn, Anders; Horvath, Peter; Volden, Inger Kristine; Stordal, Frode; Torma, Michal & Tjessem, Ingrid Vesterdal [Show all 7 contributors for this article] (2023). Citizen science for treeline mapping.
• Bryn, Anders; Brynildsrud, Katrine Marie; Horvath, Peter; Keetz, Lasse Torben; Lieungh, Eva & Naas, Adam Eindride [Show all 9 contributors for this article] (2023). “Ground-truth" from field-based ecosystem mapping.
• Bryn, Anders; Horvath, Peter; Torma, Michal; Naas, Adam Eindride; Volden, Inger Kristine & Liahjell, Gunnar Thorsen [Show all 10 contributors for this article] (2022). Treeline research at Natural history museum (UiO) .
• Gunnar, Thorsen Liahjell & Naas, Adam Eindride (2021). Modeling of a century with tree- and forest line changes and their climate impact.
• Naas, Adam Eindride (2021). Modellering av skoggrenser.
• Naas, Adam Eindride (2021). Modelling a century with tree- and forest line changes in South Norway.
• Bryn, Anders; Naas, Adam Eindride; Horvath, Peter; Stordal, Frode; Torma, Michal & Volden, Inger Kristine [Show all 7 contributors for this article] (2002). Tree- and forest line dynamics in Norway – causes, consequences and monitoring .
• Dervo, Børre Kind; Naas, Adam Eindride & Bryn, Anders (2023). Feltveileder limnisk. Regler, typetabeller og praktiske råd (NiN 3.0). Artsdatabanken. ISSN 978-82-92838-64-8.
• Bryn, Anders; Haugland, Barbro Taraldset; Dolan, Margaret; Bekkby, Trine & Naas, Adam Eindride (2023). Feltveileder marint. Regler, typetabeller og praktiske råd (NiN 3.0). Artsdatabanken. ISSN 978-82-92838-63-1. Full text in Research Archive
• Bryn, Anders & Naas, Adam Eindride (2023). Feltveileder terrestrisk. Regler, typetabeller og praktiske råd (NiN 3.0). Artsdatabanken. ISSN 978-82-92838-62-4.
• Bryn, Anders; Andersen, Guri Sogn; Bekkby, Trine; Bratli, Harald; Dervo, Børre Kind & Dolan, Margaret [Show all 14 contributors for this article] (2023). Hovedveileder for feltbasert kartlegging. Terrestrisk, limnisk og marin naturvariasjon etter NiN (3.0). Artsdatabanken. ISSN 978-82-92838-61-7. Full text in Research Archive

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