Maltseva, Arina L; Varfolomeeva, Marina A; Ayanka, Roman V; Gafarova, Elizaveta R; Repkin, Egor A; Pavlova, Polina A; Shavarda, Alexei L; Mikhailova, Natalia A; Granovitch, Andrei I (2021): Shell morphometry in sympatric populations of closely related species of the genus Littorina (Neritrema) in two sites in the Norwegian and Barents Sea [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.923728, In: Maltseva, AL et al. (2021): Microhabitat distribution, shell shape, and metabolomes in sympatric populations of closely related species of the genus Littorina (Neritrema) in two sites in the Norwegian and Barents Sea [dataset bundled publication]. PANGAEA, https://doi.org/10.1594/PANGAEA.923735
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Abstract:
Folder Morphometry contains geometric morphometric data. The shell shape was described by 11 landmarks and 56 semilandmarks. In total, the analysis included: 126 individuals of L. saxatilis (50-141 mm), 32 individuals of L. arcana (81-130 mm), 47 individuals of L. compressa (61-113 mm), 128 individuals of L. obtusata (55-167 mm) and 41 individuals of L. fabalis (50-147 mm).
Keyword(s):
Comment:
- TPS.tps - the coordinates of landmarks and semilandmarks describing the shape of the shells of mollusks in .tps format.
- curveslide.csv [semicolon separated] - semilandmark relative positions for import to geomorph package of R in specific geomorph format:
= "before" [landmark id number] - id of landmark before the semilandmark;
= "slide" [landmark id number] - semilandmark id;
= "after" [landmark id number] - id of landmark after the semilandmark.
- links.csv [semicolon separated] - positions of links between landmarks for graphical representation of shapes for import to geomorph package of R in specific geomorph format:
= "start" [landmark id number] - landmark id at the link beginning;
= "stop" [landmark id number] - landmark id at the link end.
morphometry_metadata.csv - metadata on molluscs:
= "ID" [text] - image id;
= "Site" [text] - the name of the sampling site ("Saltstraumen", "Varangerfjord");
= "Level" [text] - level of the intertidal zone ("upper" or "lower");
= "Species" [text] - species of Littorina (L.arcana, L.saxatilis, L.compressa, L.obtusata, L.fabalis) ;
= "Sex" [text] - sex ("f" - female; "m" - male);
= "SpeciesGroup" - name of the species group ("'saxatilis'" - "saxatilis", "'obtusata'" -"obtusata");
= "SpeciesSubpopulation" [text] - species name and subpopulation.
- TPS_measurement_error.tps - the coordinates of landmarks and semilandmarks describing the shape of the shells of molluscs in .tps format. The dataset for calculation of measurement error related to digitization. measurement_error_metadata.csv
- metadata on molluscs in TPS_measurement_error.tps (for variable description see morphometry_metadata.csv).
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Size:
119.6 kBytes