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.
760
datasets available to search
ShareScore release 0.7.1
Dataset results
760 results for “Species occurrences”
Figure 6 in First occurrence of fouling ascidian species Microcosmus squamiger Michaelsen, 1927 and Didemnum ahu Monniot C. & Monniot F., 1987 in İzmir Bay (Eastern Aegean Sea)
Figure 6. Siphonal spines of Microcosmus squamiger (Mordoğan, 25.08.2015). Scale bar: 100 µm.
Figure 8 in First occurrence of fouling ascidian species Microcosmus squamiger Michaelsen, 1927 and Didemnum ahu Monniot C. & Monniot F., 1987 in İzmir Bay (Eastern Aegean Sea)
Figure 8. Spicules of Didemnum ahu (Karaburun, 23.11.2015). Scale bar: 30 µm.
Figure 7 in First occurrence of fouling ascidian species Microcosmus squamiger Michaelsen, 1927 and Didemnum ahu Monniot C. & Monniot F., 1987 in İzmir Bay (Eastern Aegean Sea)
Figure 7. Siphonal spines of Microcosmus squamiger (Mordoğan, 25.08.2015). Scale bar: 10 µm.
Species co-occurrence shapes spatial variability in plant diversity–biomass relationships in natural rangelands under different grazing intensities
<p>Grazing can alter plant species interactions in natural rangelands, which in turn might influence the productivity of the ecosystem but we do not fully understand how spatial variability in plant diversity-biomass relationships are modulated by grazing intensity. Here, we hypothesized that plant species co-occurrence in rangelands is mainly driven by niche segregation due to grazing and heterogeneity in local resources, and that grazing therefore modulates diversity–biomass relationships.<b> </b>We tested our hypothesis across 35 rangeland sites in Iran, using a species co-occurrence index to assess plant spatial aggregation within each site. At each site, we measured aboveground biomass, plant diversity, topography, soil nutrients and three levels of grazing intensity. High spatial segregation of plant communities (low species co-occurrence) was found at heavily grazed sites, whereas greater spatial aggregation (high species co-occurrence) was found on low and moderate grazed sites, showing varied associational patterns of species with grazing intensity. Soil nutrients increased with grazing intensity and spatial segregation of plant communities was greater at sites with high soil nutrient concentrations, indicating that grazing intensity influences the spatial heterogeneity of plant communities via nutrients deposited in urine and faeces. Declining plant biomass with grazing intensity was related to a strong decline in graminoid species diversity, which suggests that the diversity-biomass relationship is influenced by selective grazing of palatable species. The relationships between species co-occurrence and biomass or plant diversity suggest non-random patterns in species co-occurrences with grazing intensity, which could be the result of competition driven by high livestock grazing intensity. We therefore suggest that rangeland stocking rates should be managed properly to maintain rangeland production while promoting plant diversity.</p>
Fig. 1 in Spatio-temporal segregation and size distribution of fish assemblages as related to non-native species occurrence in the middle rio Doce Valley, MG, Brazil
Fig. 1. Study region, indicating the ten sampled lakes. The lakes Capim (Ca), Ferrugem (Fe) and Nova (No) have only native fish species, lakes Crentes (Cr), Poço Redondo (Po), Romoalda (Ro), and Timburé (Ti) have non-piscivorous non-native fish species present, and lakes Águas Claras (Ag), Ariranha (Ar), and Palmeirinha (Pa) have non-native piscivores present.
Figure 2 from: Riera R, Escanez A, González Á, Sierra Á (2012) On the occurrence of egg masses of the diamond-shaped squid Thysanoteuthis rhombus Troschel, 1857 in the subtropical eastern Atlantic (Canary Islands). A potential commercial species? ZooKeys 222: 69-76. https://doi.org/10.3897/zookeys.222.2835
Figure 2 - Some Thysanoteuthis rhombus egg masses recorded (numbers refer to descriptions in Table 1 and Figure 1).
Figure 1 from: Riera R, Escanez A, González Á, Sierra Á (2012) On the occurrence of egg masses of the diamond-shaped squid Thysanoteuthis rhombus Troschel, 1857 in the subtropical eastern Atlantic (Canary Islands). A potential commercial species? ZooKeys 222: 69-76. https://doi.org/10.3897/zookeys.222.2835
Figure 1 - Distribution of egg masses of Thysanoteuthis rhombus in Canary Islands. Triangles: literature records. Circles: new data (numbers refer to descriptions in Table 1).
Figure 8 from: Guertin C, Popa V, Morneau L, Piché C, Deshaies A, Bauce E (2013) Occurrence of species of the genus Pityophthorus Eichhoff (Coleoptera, Curculionidae, Scolytinae) in the province of Quebec, Canada. ZooKeys 348: 97-124. https://doi.org/10.3897/zookeys.348.6029
Figure 8 - Map of Pityophthorus concavus Blackman and Pityophthorus opaculus LeConte records in Quebec, Canada.
Figure 9 from: Guertin C, Popa V, Morneau L, Piché C, Deshaies A, Bauce E (2013) Occurrence of species of the genus Pityophthorus Eichhoff (Coleoptera, Curculionidae, Scolytinae) in the province of Quebec, Canada. ZooKeys 348: 97-124. https://doi.org/10.3897/zookeys.348.6029
Figure 9 - Map of Pityophthorus carinatus carinatus Bright, Pityophthorus intextus Swaine and Pityophthorus ramiperda Swaine records in Quebec, Canada.
Figure 7 from: Guertin C, Popa V, Morneau L, Piché C, Deshaies A, Bauce E (2013) Occurrence of species of the genus Pityophthorus Eichhoff (Coleoptera, Curculionidae, Scolytinae) in the province of Quebec, Canada. ZooKeys 348: 97-124. https://doi.org/10.3897/zookeys.348.6029
Figure 7 - Map of Pityophthorus balsameus Blackman, Pityophthorus dentifrons Blackman and Pityophthorus lautus Eichhoff records in Quebec, Canada.
Figure 6 from: Guertin C, Popa V, Morneau L, Piché C, Deshaies A, Bauce E (2013) Occurrence of species of the genus Pityophthorus Eichhoff (Coleoptera, Curculionidae, Scolytinae) in the province of Quebec, Canada. ZooKeys 348: 97-124. https://doi.org/10.3897/zookeys.348.6029
Figure 6 - Map of Pityophthorus biovalis Blackman and Pityophthorus briscoei Blackman records in Quebec, Canada.
Figure 10 from: Guertin C, Popa V, Morneau L, Piché C, Deshaies A, Bauce E (2013) Occurrence of species of the genus Pityophthorus Eichhoff (Coleoptera, Curculionidae, Scolytinae) in the province of Quebec, Canada. ZooKeys 348: 97-124. https://doi.org/10.3897/zookeys.348.6029
Figure 10 - Map of Pityophthorus consimilis LeConte and Pityophthorus murrayanae murrayanae Blackman records in Quebec, Canada.
Figure 8 from: Kutschera U, Elliott J (2014) The European medicinal leech Hirudo medicinalis L.: Morphology and occurrence of an endangered species. Zoosystematics and Evolution 90(2): 271-280. https://doi.org/10.3897/zse.90.8715
Figure 8 - Geographical distribution of Hirudo medicinalis and Hirudo verbana, based on data published in 2012 (A). In the species Hirudo verbana, a western (w) and an eastern (e) phylogroup has been identified. Occurrence of medicinal leeches in the nest of aquatic birds (B). The photograph shows adult, living specimens of Hirudo medicinalis (with cocoon, see Inset) collected from a nest of a water bird (western marsh harrier, Circus aeruginosus) in Poland (adapted from Kovalenko and Utevsky 2012 [A] and Buczyńsky et al. 2014 [B], respectively).
Figure 6 from: Kutschera U, Elliott J (2014) The European medicinal leech Hirudo medicinalis L.: Morphology and occurrence of an endangered species. Zoosystematics and Evolution 90(2): 271-280. https://doi.org/10.3897/zse.90.8715
Figure 6 - Intact (A) and fragmented (B) posterior sucker of an adult alcohol-preserved Hirudo medicinalis. The disk-shaped sucker is largely composed of muscle tissue containing numerous mitochondria. DNA-extractions for mt-sequence analysis (fragments of the gene CO-I) were performed from this part of the body that is not contaminated with the gut content of the blood-sucking annelid.
Figure 5 from: Kutschera U, Elliott J (2014) The European medicinal leech Hirudo medicinalis L.: Morphology and occurrence of an endangered species. Zoosystematics and Evolution 90(2): 271-280. https://doi.org/10.3897/zse.90.8715
Figure 5 - Adult and junvenile alcohol-preserved Hirudo medicinalis, and a cocoon in dorsal view (A). The Inset shows the characteristic pigment pattern of a newly hatched individual in dorsal and ventral view, respectively (B).
Figure 3 from: Kutschera U, Elliott J (2014) The European medicinal leech Hirudo medicinalis L.: Morphology and occurrence of an endangered species. Zoosystematics and Evolution 90(2): 271-280. https://doi.org/10.3897/zse.90.8715
Figure 3 - Details of the midbody, in dorsal view (A), the head (B) and the anterior sucker (ventral view) (C) of an adult, alcohol-preserved Hirudo medicinalis. As = auterior sucker.
Figure 4 from: Kutschera U, Elliott J (2014) The European medicinal leech Hirudo medicinalis L.: Morphology and occurrence of an endangered species. Zoosystematics and Evolution 90(2): 271-280. https://doi.org/10.3897/zse.90.8715
Figure 4 - Lateral view of an adult, alcohol-preserved Hirudo medicinalis (A) and position of the male (♂) and female (♀) gonopores on the ventral side (B), with the tube-like male copulatory organ outside of the body.
Figure 2 from: Kutschera U, Elliott J (2014) The European medicinal leech Hirudo medicinalis L.: Morphology and occurrence of an endangered species. Zoosystematics and Evolution 90(2): 271-280. https://doi.org/10.3897/zse.90.8715
Figure 2 - Dorsal and ventral views of a representative, alcohol-preserved specimen of Hirudo medicinalis collected in eastern Germany. The species-specific pigment patterns are visible.
Figure 7 from: Kutschera U, Elliott J (2014) The European medicinal leech Hirudo medicinalis L.: Morphology and occurrence of an endangered species. Zoosystematics and Evolution 90(2): 271-280. https://doi.org/10.3897/zse.90.8715
Figure 7 - Two adult, free-living Hirudo medicinalis in the process of sucking blood from an edible frog (Rana esculenta L.). The amphibians usually survive these attacks (adapted from Manzke and Winkler 2012).
Figure 1 from: Kutschera U, Elliott J (2014) The European medicinal leech Hirudo medicinalis L.: Morphology and occurrence of an endangered species. Zoosystematics and Evolution 90(2): 271-280. https://doi.org/10.3897/zse.90.8715
Figure 1 - Photograph of living adult specimens of the European medicinal leech (Hirudo medicinalis Linnaeus 1758) and the Mediterranean medicinal leech (Hirudo verbana Carena 1820). The leeches, maintained in pond water, are depicted in dorsal view, with their disk-shaped posterior sucker attached to a petri dish.
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.