Find research datasets worth reusing
Search datasets from major research repositories and use ShareScore to quickly assess how well each record supports discovery, access, and reuse.
437
datasets available to search
ShareScore release 0.9.0
Dataset results
437 results for “morphological variability”
Morphological variability decreases in populations living in less suitable environments and close to the range edges
Open the record for dataset details and reuse information.
Quantitative variables related to color, territory, behavior, and morphology for male lesser prairie-chickens used in discrete choice models in mate choice study
Open the record for dataset details and reuse information.
Data from: Phylogeography and classification of Dusty Miller (Spyridium parvifolium; Rhamnaceae): a morphologically variable shrub from south-east Australia
Open the record for dataset details and reuse information.
Data from: Leaf morphological traits show greater responses to changes in climate than leaf physiological traits and gas exchange variables
Open the record for dataset details and reuse information.
Temporal instability of lake charr phenotypes: Synchronicity of growth rates and morphology linked to environmental variables?
Open the record for dataset details and reuse information.
Data from: Neighbour species richness and local structural variability modulate aboveground allocation patterns and crown morphology of individual trees
<p>Local neighbourhood interactions are considered a main driver for biodiversity–productivity relationships in forests. Yet, the structural responses of individual trees in species mixtures and their relation to crown complementarity remain poorly understood. Using a large‐scale forest experiment, we studied the impact of local tree species richness and structural variability on above‐ground wood volume allocation patterns and crown morphology. We applied terrestrial laser scanning to capture the three‐dimensional structure of trees and their temporal dynamics. We found that crown complementarity and crown plasticity increased with species richness. Trees growing in species‐rich neighbourhoods showed enhanced aboveground wood volume both in trunks and branches. Over time, neighbourhood diversity induced shifts in wood volume allocation in favour of branches, in particular for morphologically flexible species. Our results demonstrate that diversity‐mediated shifts in allocation pattern and crown morphology are a fundamental mechanism for crown complementarity and may be an important driver of overyielding.</p> <p> </p>
Data from: Analysis of morphological variability in the clam shrimp Eosestheria middendorfii (Crustacea, Spinicaudata) from the Lower Cretaceous of China, and its implications for spinicaudatan taxonomy
Unresolved taxonomic issues regarding spinicaudatans, clam shrimps that formed the most abundant faunal element in the lacustrine Barremian to Aptian Yixian Formation, have hampered palaeoecological and evolutionary interpretations of this key fossil group. Here, we analyse morphological variability in East Asian clam-shrimp taxa by quantifying: (1) size and shape; and (2) ornamental features (radial lirae distances). Intergeneric variability was examined using 51 specimens of various East Asian Mesozoic taxa, 16 of which were chosen for a taxonomic revision of the 10 species described from the Yixian Formation of western Liaoning. Geometric morphometrics proved to be effective for the separation of genera, while the quantification of ornamental features was species-diagnostic. Various authors have previously indicated the possibility that East Asian clam-shrimp species have been split excessively, a criticism that has been confirmed by our analyses. According to our results, four of the ten species described from the Yixian Formation are valid, of which one might represent a junior synonym of Diestheria jeholensis; five taxon names represent junior synonyms of Eosestheria middendorfii (Jones), and one a nomen dubium. According to lirae distances and analysis of shape, Eosestheria fuxinensis, the original type species of Eosestheria, is synonymous with the type of Diestheria. Therefore, a new type species for Eosestheria is warranted and here fixed as E. middendorfii. This taxonomic revision questions the high level of clam-shrimp diversity recognized within the Yixian Formation, and indicates that many of the species described in fact represent various ontogenetic stages of E. middendorfii.
Data from: Echinorhynchus salmonis Müller, 1784 (Acanthocephala: Echinorhynchidae) from the Bothnian Bay, Baltic Sea: morphological variability and radial asymmetry of proboscis hooks
Echinorhynchus salmonis is a common parasite of salmoniform and other fishes, occurring in fresh and brackish waters throughout the Holarctic. Presented here is the first analysis of the morphometric and meristic variation in a Palaearctic population of E. salmonis, collected from whitefish Coregonus lavaretus L. and smelt Osmerus eperlaus (L.) from the Bothnian Bay, northern Baltic Sea. Morphological data were compared with published descriptions of congeneric taxa. Nearctic populations of salmonid echinorhynchids considered by some to represent a distinct species, E. coregoni Linkins in Van Cleave, 1919, did not show any morphological divergence from Palaearctic populations, indicating that the name E. coregoni should be suppressed. Similarly, E. alpinus Linstow, 1901 has been considered to be a junior synonym of E. salmonis. However, E. alpinus should be regarded as a valid species, because it has a longer and more elongate body. The armature of the acanthocephalan proboscis typically displays radial symmetry. However, in E. salmonis the hooks on the dorsal surface of the proboscis are smaller than those on the ventral surface. Size differences between dorsal and ventral hooks are most pronounced at the base of the proboscis. The systematic and functional significance of radial asymmetry of proboscis hooks is discussed.
FIGURE 4 in A new leaf tailed gecko species from northern Madagascar with a preliminary assessment of molecular and morphological variability in the Uroplatus ebenaui group
FIGURE 4. The hemipenis of a paratype (ZSM 1133/2003) of Uroplatus finiavana, (a) sulcal view, (b) parasulcal view.
FIGURE 7 in A new leaf tailed gecko species from northern Madagascar with a preliminary assessment of molecular and morphological variability in the Uroplatus ebenaui group
FIGURE 7. Haplotype network reconstruction of a 400 bp fragment of the nuclear C-mos gene for the analysed lineages of the Uroplatus ebenaui group. Haplotypes were inferred using the PHASE algorithm. The haplotypes of U. finiavana are in yellow. In green, blue and red are those of U. phantasticus and U. ebenaui, U. malama, respectively. Grey is used for the candidate species U. sp. 1–3 from Tsaratanana.
FIGURE 1 in A new leaf tailed gecko species from northern Madagascar with a preliminary assessment of molecular and morphological variability in the Uroplatus ebenaui group
FIGURE 1. Measurements taken from Uroplatus specimens listed in Table 1, (a) head; (b) body and tail.
FIGURE 3 in A new leaf tailed gecko species from northern Madagascar with a preliminary assessment of molecular and morphological variability in the Uroplatus ebenaui group
FIGURE 3. Uroplatus malama encountered in May 2010 at Andreoky (Andohahela area), south east of Madagascar around 600–700 m a. s. l. (a) photo of a male and (c) the ventral side of its tail; (b) a female.
FIGURE 9 in A new leaf tailed gecko species from northern Madagascar with a preliminary assessment of molecular and morphological variability in the Uroplatus ebenaui group
FIGURE 9. Map of Madagascar showing the distribution of the evolutionary lineages of the Uroplatus ebenaui group. Only selected localities: (1) those mentioned in the text, (2) those for which molecular data are presented herein or are available from us (unpublished), and (3) Andringitra Massif which is the southernmost record of U. phantasticus vouchered by a DNA sequence (Raxworthy et al. 2008). The Zahamena locality for U. phantasticus bears a question mark due to the high genetic differentiation of this population, which leaves its actual specific identity in need of confirmation.
FIGURE 6 in A new leaf tailed gecko species from northern Madagascar with a preliminary assessment of molecular and morphological variability in the Uroplatus ebenaui group
FIGURE 6. Bayesian inference tree of the Uroplatus ebenaui group based on a 700 bp fragment of the mitochondrial ND4 gene. Only posterior probability values> 0.95 are displayed at nodes. In yellow the highly supported cluster of the newly described species. Adjacent to each clade, a picture of the oral mucosa is presented showing its pigmentation. Bars in grey scale tones color code roughly for group clades in relation to elevation.
FIGURE 8 in A new leaf tailed gecko species from northern Madagascar with a preliminary assessment of molecular and morphological variability in the Uroplatus ebenaui group
FIGURE 8. Comparative pictures of the body and mouth pigmentation in living and preserved specimens of the different species of the Uroplatus ebenaui group. (a) female of U. ebenaui (ZCMV13013) from Nosy Be, November 2009; (b) male of U. malama (ZCMV12218) from Andreoky (Andohahela area), May 2010; (c) male of Uroplatus sp. 2 from Tsaratanana, June 2010; (d) female of Uroplatus sp. 3 from Tsaratanana, June 2010; (e) female of U. finiavana from Montagne d'Ambre, February 2003, live and preserved mouth pictures are not from the photographed animal; (f) male of U. phantasticus from Ranomafana, March 2004; (g) female of Uroplatus sp. 1 from Tsaratanana, June 2010.
FIGURE 2 in A new leaf tailed gecko species from northern Madagascar with a preliminary assessment of molecular and morphological variability in the Uroplatus ebenaui group
FIGURE 2. Photo in life of a male of Uroplatus finiavana sp. nov. from Montagne d'Ambre National Park, February 2004.
FIGURE 5 in A new leaf tailed gecko species from northern Madagascar with a preliminary assessment of molecular and morphological variability in the Uroplatus ebenaui group
FIGURE 5. (a, b) Comparative graphs of relative tail length and relative tail width (TaL/SVL, TaW/SVL) of the specimens employed in our morphometric study. Specimens are separated by sex; graphs display same trend for the compared character. (c, d) Comparisons of the length of medial posterior projection of the interorbital ridge (IRPL) and neck triangle length (NTL), among described species and Uroplatus finiavana only.
FIGURE 8 in Morphological variability and taxonomy of Coraebus hastanus Gory & Laporte de Castelnau, 1839 (Coleoptera: Buprestidae: Agrilinae: Coraebini: Coraebina)
FIGURE 8. Habitus, aedeagi and ovipositors. Coraebus ephippiatus. A: dorsal habitus of the syntype specimen; B: aedeagus; C: ovipositor; C. hastanus. D: dorsal habitus of specimen from Thailand; E: dorsal habitus of the specimen from Vietnam; F, G: aedeagus H: ovipositor.
FIGURE 7 in Morphological variability and taxonomy of Coraebus hastanus Gory & Laporte de Castelnau, 1839 (Coleoptera: Buprestidae: Agrilinae: Coraebini: Coraebina)
FIGURE 7. Distribution map of three subspecies. C. hastanus hastanus;, C. hastanus oberthueri; C. hastanus ephippiatus.
FIGURE 6 in Morphological variability and taxonomy of Coraebus hastanus Gory & Laporte de Castelnau, 1839 (Coleoptera: Buprestidae: Agrilinae: Coraebini: Coraebina)
FIGURE 6. Comparison of the different parameters and ratios of elytra. A, parameters of elytra; B, ratios of elytra. Columns with same letters (a) are not significantly different.
ScienceDex guides
Understand access before you commit
These curated guides explain access requirements, typical timelines, costs, and reuse considerations for widely used research datasets.
Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.