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828 results for “species trait”
FIGURE 18 in The ontogeny of morphological traits in three European species of Cosmochthonius Berlese, 1910 (Acari: Oribatida: Cosmochthoniidae)
FIGURE 18. Cosmochthonius ugamaensis, SEM micrographs. (A) Adult, dorsal aspect; (B) anterior part of notogaster, lateral aspect; (C) pygidium, dorsal aspect.
FIGURE 8 in The ontogeny of morphological traits in three European species of Cosmochthonius Berlese, 1910 (Acari: Oribatida: Cosmochthoniidae)
FIGURE 8. Hypertrophied setae of tritonymph, scale bars 50 μm. (A) Cosmochthonius reticulatus; (B) C. foliatus.
FIGURE 5 in The ontogeny of morphological traits in three European species of Cosmochthonius Berlese, 1910 (Acari: Oribatida: Cosmochthoniidae)
FIGURE 5. Cosmochthonius reticulatus, lateral aspect, legs partially drawn, scale bars 50 μm. (A) Larva; (B) tritonymph.
FIGURE 1 in The ontogeny of morphological traits in three European species of Cosmochthonius Berlese, 1910 (Acari: Oribatida: Cosmochthoniidae)
FIGURE 1. Cosmochthonius reticulatus, adult with cerotegument, dorsal aspect, legs partially drawn, scale bar 50 μm.
FIGURE 15 in The ontogeny of morphological traits in three European species of Cosmochthonius Berlese, 1910 (Acari: Oribatida: Cosmochthoniidae)
FIGURE 15. Cosmochthonius foliatus, legs partially drawn, scale bars 50 μm. (A) Anal region of larva; (B) anogenital region of tritonymph.
FIGURE 13 in The ontogeny of morphological traits in three European species of Cosmochthonius Berlese, 1910 (Acari: Oribatida: Cosmochthoniidae)
FIGURE 13. Anogenital region of adult, scale bars 50 μm, legs partially drawn. (A) Cosmochthonius foliatus; (B) C. ugamaensis.
FIGURE 10 in The ontogeny of morphological traits in three European species of Cosmochthonius Berlese, 1910 (Acari: Oribatida: Cosmochthoniidae)
FIGURE 10. Posterior margin of gastronotum, scale bar 20 μm. (A) Cosmochthonius reticulatus; (B) C. foliatus; (C) C. ugamaensis; (D) C. ponticus.
FIGURE 7 in The ontogeny of morphological traits in three European species of Cosmochthonius Berlese, 1910 (Acari: Oribatida: Cosmochthoniidae)
FIGURE 7. Cosmochthonius reticulatus, tritonymph, dorsal aspect, legs partially drawn, scale bar 50 μm.
FIGURE 3 in The ontogeny of morphological traits in three European species of Cosmochthonius Berlese, 1910 (Acari: Oribatida: Cosmochthoniidae)
FIGURE 3. Cosmochthonius reticulatus, adult, anogenital region, legs partially drawn, scale bar 50 μm.
FIGURE 2 in The ontogeny of morphological traits in three European species of Cosmochthonius Berlese, 1910 (Acari: Oribatida: Cosmochthoniidae)
FIGURE 2. Cosmochthonius reticulatus, adult. (A) Notogaster, cerotegument removed, scale bar 50 μm; (B) fragment of pygidium.
FIGURE 6. Cosmochthonius reticulatus, scale bars 50 in The ontogeny of morphological traits in three European species of Cosmochthonius Berlese, 1910 (Acari: Oribatida: Cosmochthoniidae)
FIGURE 6. Cosmochthonius reticulatus, scale bars 50 μm. (A) Anal region of larva; (B) anogenital region of tritonymph.
R code and data for "Intraspecific and intraindividual trait variability decrease with tree species richness in a subtropical tree diversity experiment"
<p>R codes and dataset for tha statistical analyses and production of figures in "Intraspecific and intraindividual trait variability decrease with tree species richness in a subtropical tree diversity experiment" by Castro Sánchez-Bermejo et al.</p>
Exotic pet owners' preferences for different ectothermic taxa is based on species traits and purchase price in the United States
<p>Data set that supports the publication Pienaar, E.F., Sturgeon, D.J.E. (2024) Exotic pet owners’ preferences for different ectothermic taxa is based on species traits and purchase price in the United States. <em>Neobiota</em>, <span>91: 1-27</span>.</p>
Life history traits in two Drosophila species differently affected by microbiota diversity under lead exposure
<p><em>We investigated the influence of population origin and heavy metal exposure to the diversity of microbiota in two species, Drosophila melanogaster and Drosophila subobscura grown in laboratory on lead (II) acetate (Pb(CH3COO)<sub>2</sub>) saturated substrate. The composition of microbiota in larvae and adults was determined by sequencing (NGS) of the V3-V4 variable regions of the 16S rRNA gene.</em></p>
Species abundances and functional traits data of frog assemblages in Amazonian forests (Tapajós FLONA and Alter do Chão village, Brazil)
<p>We sampled frogs along an edaphic and vegetation-structure gradient in the Brazilian Amazon. We sampled 33 plots organized in four modules (with 10, 6, 8 and 9 plots). Environmental data are composed of are litter depht(cm), distance to water bodies (m), temperature (ºC), vegetation structure (PCA axis), soil sand and silt content (g-kg), and proportion of the area deforested. Additionally, we measured snout-vent length (SVL) and leg length relative to SVL and evaluated the effects of environmental variables on thirteen binary traits used with presence or absence.</p>
Plant species with the trait of continuous flowering do not hold core roles in a Neotropical lowland plant-pollinating insect network
<p>Plant-animal interaction science repeatedly finds that plant species differ by orders of magnitude in the number of interactions they support. The identification of plant species that play key structural roles in plant-animal networks is a global conservation priority, however, in hyperdiverse systems such as tropical forests, empirical datasets are scarce. Plant species with longer reproductive seasons are posited to support more interactions compared to plant species with shorter reproductive seasons but this hypothesis has not been evaluated for plant species with the longest reproductive season possible at the individual plant level, the continuous flowering phenology. Resource predictability is also associated with promoting specialization, and therefore continuous flowering may instead favor specialist interactions. Here we use quantitative pollinating insect-plant networks constructed from countryside habitat of the Tropical Wet forest Life Zone and modularity analysis to test if species that share the trait of continuous flowering hold core roles in mutualistic networks. With a few exceptions, most<span> plant species sampled within our network were assigned to the role of peripheral. All but one network had significantly high modularity scores and each continuous flowering plant species was in a different module. Our work reveals that the continuous flowering plant species differed in some networks in their topological role, and that more evidence was found for the phenology to support specialized subsets of interactions. Our findings suggest that the conservation of Neotropical pollinating insect communities may require planting species from each module rather than identifying and conserving network hubs. </span></p>
Root anatomy helps to reconcile observed root trait syndromes in tropical tree species
<p>Studying the organization of functional traits in plant leaves and stems has revealed notable patterns linking function and form; however, evidence of similarly robust organization in root tissues remains controversial. We posit that anatomical traits in roots can provide insight on the overall organization of the root system. We hypothesize that A) size variation in the tissue outside the stele relates in a non-linear fashion with functional traits associated with direct resource uptake, including a negative relationship with root architectural traits; and B) similar relationships detected in tropical areas also hold true in other biomes.</p> <p>We address our hypotheses using empirical data from 24 tropical tree species in French Guiana, including anatomical measurements in first order roots, and functional trait description for the entire fine root system. In addition, we compiled a global meta-analysis of root trait with 500+ forest species across tropical, subtropical and temperate forests.</p> <p>Our results supported the expected non-linear relationships between cortical size and morphological traits, and a negative linear trend with architectural traits. We confirmed a global negative relationship between SRL, diameter and tissue density, suggesting similar anatomical constraints in root systems across woody plants. However the importance of factors vary across biomes, possibly related to the unequal phylogenetic representation of families across latitudes.</p> <p>Our findings imply that the rhizocentric hypothesis can be a valuable approach to understand fine root trait syndromes and the evolution of absorptive roots in vascular plants.</p>
Genetic variation in leaf traits and gas exchange response to vapor pressure deficit in two contrasting conifer species
<p>1. Mechanistically predicting the evolutionary response of tree species to climate change requires an understanding of genetic variation in relevant traits. Here we compared the phenotypic and genetic variation in the Leaf Economics Spectrum (LES) traits and the response of gas exchange to vapor pressure deficit (VPD) in lodgepole pine (Pico) and white spruce (Pigl), an early and a late successional species dominating the boreal forests of western Canada. 2. We measured gas exchange, foliar nitrogen, and lamina mass to area ratio in 697 app. 30-year-old trees in two field progeny trials. We analyzed the response of gas exchange rates to VPD using a novel quantitative genetic model, the function-valued trait approach. 3. Pico showed greater phenotypic variation in the LES traits and greater genetic variation in photosynthetic rate than Pigl, but the species showed no significant difference in their phenotypic correlations between the LES traits. Pico showed a less sensitive stomatal response to VPD than Pigl and no significant genetic variation in stomatal sensitivity. In contrast, Pigl showed a positive correlation between the genetic values of stomatal sensitivity to VPD and stomatal conductance under low VPD. 4. Our study region is projected to see an increase in VPD with climate change; the less sensitive and genetically diverse stomatal response to VPD in Pico could make this species more vulnerable to climate change-induced droughts. </p>
Indonesian soil and litter Collembola species and trait matrix with environmental data
<p>Rainforest conversion and expansion of plantations in tropical regions is associated with changes in animal communities and biodiversity decline. In soil, Collembola are one of the most numerous invertebrate groups that control microbial processes and support arthropod predators. Despite that, information on the impact of changes in land use in the tropics on species and trait composition of Collembola communities is very limited. We investigated the response of Collembola to the conversion of rainforest into rubber agroforest ('junge rubber'), rubber and oil palm plantations in Jambi province (Sumatra, Indonesia), a region that experienced one of the strongest deforestation globally during the last decades. Collembola from litter and soil layers were collected in 2013 and 2016 using heat extraction. In the litter layer, density and species richness in plantation systems declined by 25-38% and 30-40%, respectively, compared to rainforest. By contrast, in the soil layer, density, species richness and trait diversity of Collembola were only slightly affected by land-use change contrasting the response of many other animal groups. Species and trait composition of Collembola communities in litter and soil layers differed between all land-use systems. Water content and pH were identified as main factors related to the differences in species and trait composition both in litter and soil layers, followed by the density of micro- and macropredators. Dominant Collembola species in rainforest and jungle rubber were characterized by small body size, absence of furca and absent or intense pigmentation, while in plantations larger species with long furca and diffuse or patterned coloration were more abundant. The trait-based responses were similar to those observed in Collembola from temperate regions and to those in a similar study on spiders at our study sites. Overall, land-use change negatively affected Collembola communities in the litter layer, but only little affected Collembola communities in soil. Several pantropical Collembola genera (i.e., <i>Isotomiella</i>, <i>Pseudosinella</i> and <i>Folsomides</i>) dominated across land-use systems, reflecting their high environmental adaptability or efficient dispersal calling for studies on their ecology and genetic diversity. The decline in species richness and density of litter-dwelling Collembola with the conversion of rainforest into plantation systems calls for management practices mitigating negative effects of the deterioration of the litter layer in rubber but in particular in oil palm plantations.</p>
Diversification and phylogenetic correlation of functional traits for co-occurring understory species in the Chinese boreal forest
<p><span>Functional traits impact species interactions, community composition, and ecosystem functioning. However, few studies have focused on the diversification and phylogenetic correlation of multiple functional traits over geological time. We conducted phylogenetic comparative analysis for boreal forest understory species in northeast China to examine the diversification and phylogenetic correlation in several functional traits: leaf area (LA), leaf carbon content (LCC), leaf dry matter content (LDMC), leaf nitrogen content (LNC), plant height (PH), and specific leaf area (SLA). Phylogenetic signals showed that there were very low levels of phylogenetic niche conservatism (PNC) in understory leaf-related traits and plant height, suggesting divergence of functional traits for the co-occurring understory species. The disparity through time analyses (DTT) indicated that trait disparities mainly originated during recent divergence events and there were no differences in the observed trait disparities compared to that expected under Brownian motion. Furthermore, we found both positive and negative phylogenetic correlations among the measured functional traits. The very low levels of PNC suggests that these functional traits diverged among co-occurring understory species, and that those species are distantly phylogenetically related. The phylogenetic correlations among traits maybe caused by both positively and negatively correlated adaptions which correspond to resource acquisition strategies. This study provides evidence that divergence in functional traits may reflect understory adaptations to boreal conditions. </span></p>
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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.