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.
30
datasets available to search
ShareScore release 0.9.0
Dataset results
30 results for “Caatinga dry forest”
Figure 1 in Nocturnal ant integrates generalist pollination system in the Caatinga dry forest
Figure 1. Visit behaviour of Camponotus pallescens on Ditassa hastata flowers in the Catimbau National Park, Pernambuco, Brazil. (A-B) C. pallescens taking nectar in different positions and (C) its visit frequency to D. hastata flowers throughout the night. (Black dots indicate median and error bars indicate first and third quartiles; Different letters indicate statistically significant difference from Kruskal-Wallis test with pairwise comparisons using Wilcoxon rank sum test with α=0.05)
Fig. 4 in Dung beetles in a Caatinga Natural Reserve: a threatened Brazilian dry-forest with high biological value
Fig. 4. Multidimensional scaling (MDS) ordination of the dung beetle communities in: (a) Riparian Forest (RF), Capoeira (CAP) and Arboreal Caatinga (ARB); (b) Management (MZ) and Preservation Zone (PZ) of the Brazilian National Reserve FLONA Contendas do SincorÁ, state of Bahia.
Fig. 3 in Dung beetles in a Caatinga Natural Reserve: a threatened Brazilian dry-forest with high biological value
Fig. 3. Species richness accumulation curves for the Management zone and Natural resources zone stablished in the management plan of the FLONA Contendas do SincorÁ conservation unit, state of Bahia, Brazil.
Fig. 2 in Dung beetles in a Caatinga Natural Reserve: a threatened Brazilian dry-forest with high biological value
Fig. 2. Rank-abundance (Log10 +1) of dung beetles species in two zones of the FLONA Contendas do SincorÁ management plan, Management zone (MZ) and Preservation zone (PZ). Numbers indicate the species ranked in both zones: 1. Canthon aff. piluliformes; 2. Canthon sp.1; 3. Uroxys sp.; 4. Dichotomius irinus; 5. Canthon aff. curvipes; 6. Deltochilum aff. calcaratum; 7. Ateuchus sp.; 8. Deltochilum verruciferum; 9. Dichotomius aff. semianeus; 10. Trichillum externepunctatum.
Fig. 1 in Dung beetles in a Caatinga Natural Reserve: a threatened Brazilian dry-forest with high biological value
Fig. 1. Sampled habitats of FLONA Contendas do SincorÁ, state of Bahia, Brazil during the dry season: a, Riparian Forest; b, Arboreal Caatinga; c, Capoeira.
Data associated with: Climate change will likely threaten areas of suitable habitats for the most relevant medicinal plants native to the Caatinga dry forest
<p>Medicinal plants play an important role in providing ecosystem services, such as local cultural and economic value, and human well-being, especially in poor regions. The use of plants to improve living conditions and increase the chances of survival comes from the beginning of human life. Climate change has the potential to contract areas of suitable habitat for medicinal plant species across different regions. As a consequence of climate change, the possibility of treating diseases can be compromised, and even interrupted. <em>We collected data from the medicinal applications and the parts that are used of 10 species of medicinal plants native to the Caatinga dry forest [i.e., </em><em>Myracrodruon urundeuva</em><em> Allemão (Anacardiaceae), </em><em>Cereus jamacaru </em><em>DC (Cactaceae), </em><em>Neocalyptrocalyx longifolium</em><em> (Mart) Cornejo & Iltis (Caparaceae),</em><em> Maytenus rigida </em><em>Mart (Celastraceae), </em><em>Operculina hamiltonii</em><em> (G Don) DF Austin Staples, </em><em>Operculina macrocarpa</em><em> (L) Urb (Convolvulaceae), </em><em>Amburana cearensis </em><em>(Allemao) AC Sm, </em><em>Anadenantehra colubrina</em><em> (Vell) Brenan, </em><em>Bauhinia cheilantha</em><em> (Bong) Steud and </em><em>Erythrina velutina</em><em> Willd (Legimonosae). </em>In addition, we also collected precise georeferenced data (native occurrence) of these medicinal plant species, that was accessed in 1) The Global Biodiversity Information Facility platform (GBIF) is an international data network funded by governments around the world, providing open access to data on all life on Earth (https:// www.gbif.org, accessed May 2022); 2) REFLORA - Herbário Virtual, virtual herbarium network that contains information on Brazilian plants that are deposited in 63 herbaria in Brazil and 10 international herbaria (http://reflora.jbrj.gov.br/reflora/herbarioVirtual, accessed May 2022); 3) Botanical Information and Ecology Network Platform (BIEN), a global information network that helps to document patterns of plant diversity, trait records and distribution, which includes georeferenced plant observation data from herbarium records, plots, survey inventories (https://bien .nceas.ucsb.edu/bien/biendata, accessed May 2022) and 4) 95 botanical monographs and floras. We excluded all repeated and mismatch occurrence data for each species. We collected all the available points for the studied species.</p>
Supplementary material: Mammal diversity responses to anthropic, environmental, and seasonal changes within Caatinga seasonal dry forest landscapes
<p>Caatinga's conservation and biodiversity are threatened due to the intensification of anthropic activities and climate change. The mammals have different responses to seasonal and anthropic changes, however particularly in Caatinga, these effects are still poorly understood. We assessed the influence of anthropic (distance from urban areas and wind farms), environmental (distance from water), and seasonal (Normalized Difference Vegetation Index – NDVI and land surface temperature - LST) variables on the number of records and richness of medium and large-sized mammals in Brazilian Caatinga. We used camera traps in 2016/2017 and 2018/2019, estimated the variation (cv) of NDVI and LST, and generated Euclidean distance maps to anthropic and environmental variables at 250, 500, and 1000 m spatial scales. We performed Generalized Linear Models, used the Akaike information criterion, and calculated model averaging to assess the strength and direction of effect and the uncertainties of the winner models, respectively. The distance from wind farms and maximum LST had a noticeable effect on the number of records and total richness. The distance from wind farms had a negative effect on the records of <em>Dicotyles tajacu</em> and a positive effect on the records of <em>Leopardus pardalis</em> and richness. The maximum LST had a negative effect on the records of<em> Leopardus pardalis </em>and a positive<em> </em>effect on the records of <em>Puma concolor </em>and<em> Cerdocyon thous</em>. Our results emphasize that an unsustainable expansion of wind farms is likely to compromise mammal diversity. We found an opposite pattern for some species regarding LST. However, it is important to highlight that the conservation of vegetation areas on the top of mountains and springs, and the installation of artificial water sources are important strategies to mitigate the impacts of high temperatures on mammals' biodiversity in Caatinga.</p>
Data from: Leaf-cutting ant nests support less dense and impoverished seed assemblages in a human-modified Caatinga dry forest
<p>Regenerating forests make up an increasingly large portion of tropical landscapes worldwide and regeneration dynamics may be influenced by leaf-cutting ants (LCA), which proliferate in disturbed areas and collect seeds for fungus culturing. Here we investigate how LCA influence seed fate in human-modified areas of Caatinga dry forest. We evaluate the seed deposition and predation on Atta opaciceps nests, foraging habitat surrounding nest and control habitat away of nest influence of 15 colonies located along a forest cover gradient during the rainy and dry season. For each habitat, four 50-cm2 plots were established and all seeds on the soil surface were collected along one year. We recorded 13,628 seeds distributed among 47 species and 36.57% of the total seeds did not show any sign of predation. Nest mound habitats supported low-density and species-poor seed assemblages, which were taxonomically distinct from the control habitats. These effects only occurred in the rainy season. The proportion of undamaged seeds were similar across the habitats. While forest cover did not influence seed assemblage in terms of species richness or seed predation, it did interact with habitat type via increments in seed abundance as forest cover increased across the nests. Forest cover also affected seed composition, but only in the rainy season. These results indicate that LCA decrease seed deposition in areas under their influence, particularly on the nest mounds. As LCA profit from human disturbance in the Caatinga, their role as seed 'sinks' should be enhanced in disturbed Caatinga patches, particularly during the rainy season, when most of the plant recruitment occurs. Our findings reinforce the importance of LCA as drivers of forest dynamics and resilience in human-modified landscape.</p>
Cactus height increases the modularity of a plant-frugivore network in the Caatinga dry forest
<p class="MsoNormal"><span>Cacti fruits are key resources to many frugivorous animals in Neotropical arid and semiarid regions. However, most studies have focused on a particular animal group or cacti species, but few have explored the overall interactions of such species at the community level. Here we monitored frugivory on five cacti species using camera traps that sampled diurnal and nocturnal interactions. We investigated the structure of interactions with bird, mammal, and reptile frugivores in the Brazilian Caatinga dry forest. We hypothesized that the height of cacti limit interactions with different types of frugivores, which would result in highly structured and modular interaction networks. In 2,929 camera-days, we recorded 23 vertebrate species feeding on cacti fruits, including seven new records, all determined to be primary seed dispersers. As predicted, the cacti-frugivore network was modular and non-nested, with the two shortest cacti species grouped in a module dominated by interactions with reptiles and non-flying mammals. The tallest cacti species were dominated by frugivory interactions with birds and had comparatively less interaction diversity than shorter cacti species. Our results support the contention that cacti are keystone species in semiarid ecosystems where they produce small-seeded fleshy fruits year-round.</span></p>
Leaf-cutting ants negatively impact the regeneration of the Caatinga dry forest across abandoned pastures
Open the record for dataset details and reuse information.
Data from: The rapid recovery of a Caatinga dry forest is mediated by disturbance-adapted species
Open the record for dataset details and reuse information.
Human disturbance and aridity influence biomass harvesting by leaf-cutting ants with impacts on nutrient dynamics in a Caatinga dry forest
Open the record for dataset details and reuse information.
Supplementary material: Mammal diversity responses to anthropic, environmental, and seasonal changes within Caatinga seasonal dry forest landscapes
Open the record for dataset details and reuse information.
Cactus height increases the modularity of a plant-frugivore network in the Caatinga dry forest
Open the record for dataset details and reuse information.
Data from: Leaf-cutting ant nests support less dense and impoverished seed assemblages in a human-modified Caatinga dry forest
Open the record for dataset details and reuse information.
Taxonomic and functional compositions and environmental data of 19 seedling assemblages in a Caatinga dry forest
<p>We used these information to assess the structure, composition, and diversity of woody seedling assemblages across 19 forest stands in a human-modified landscape of Caatinga dry forest, assessing the role played by rainfall, aboveground biomass, and chronic anthropogenic disturbances (i.e., livestock grazing pressure and wood extraction) as assembly forces. We quantified a large set of community-level attributes including functional traits related to water availability, physical protection, and survival success. We recorded a total of 544 seedlings from 59 species.</p>
Restoration priorities for Caatinga dry forests: landscape resilience, connectivity and biodiversity value
<p>1. Restoration actions can halt biodiversity loss and rescue its services. However, in order to be effective, priority areas for restoration should be chosen based on objective large-scale restoration planning. Here, a multi-criteria graph theory (GT) framework is proposed to indicate priority areas for active restoration, based on landscape resilience, landscape connectivity, and biodiversity conservation value, focusing on threatened endemic plant species.</p> <p>2. We applied this GT framework to 10,406 catchment basins of the Brazilian Caatinga, the largest seasonally dry tropical forest of the New World. Vegetation cover and within-catchment connectivity were used to identify catchments of intermediate landscape resilience, which in principle offer more effective opportunities for restoration. Then, such catchments were independently classified into (i) three classes according their value for between-catchment connectivity and (ii) three classes of biodiversity conservation value, based on richness of threatened, endemic plant species. By the integration of landscape resilience, landscape connectivity and biodiversity conservation values, three priority classes for restoration were generated.</p> <p>3. The multi-criteria framework generated several restoration priority cut-offs. Prioritization based on landscape resilience selected 36% of the Caatinga catchments as high priority for restoration. By independently adding landscape connectivity and biodiversity conservation value, only 12% and 3% of the catchments, respectively, were considered high priority. By combining all three criteria, 9% of the catchments were selected as high priority and less than 1% as top priority for restoration.</p> <p>4. Synthesis and applications: The multicriteria GT framework for restoration prioritization, which maximizes the effectiveness of restoration actions, landscape connectivity for climate change adaptation and conservation of threatened species, can be applied worldwide under different budged limitations and spatial scales, being useful for private, state, and federal initiatives.</p>
Data from: Plant functional types broadly describe water use strategies in the Caatinga, a seasonally dry tropical forest in northeast Brazil
<ol> <li><span>In seasonally dry tropical forests, plant functional type can be classified as deciduous low wood density, deciduous high wood density, or evergreen high wood density species. While deciduousness is often associated with drought-avoidance and low wood density is often associated with tissue water storage, the degree to which these functional types may correspond to diverging and unique water use strategies has not been extensively tested. </span></li> <li><span>We examined (1) tolerance to water stress, measured by pre-dawn and mid-day leaf water potential; (2) water use efficiency, measured via foliar δ<sup>13</sup>C; and (3) access to soil water,<i> </i>measured via stem water δ<sup>18</sup>O.</span></li> <li><span>We found that deciduous low wood density species maintain high leaf water potential and low water use efficiency. Deciduous high wood density species have lower leaf water potential and variable water use efficiency. Both groups rely on shallow soil water. Evergreen high wood density species have low<i> </i>leaf water potential, higher water use efficiency, and access alternative water sources. These findings indicate that deciduous low wood density species are drought avoiders, with a specialized strategy for storing root and stem water. Deciduous high wood density species are moderately drought tolerant, and evergreen high wood density species are the most drought tolerant group. </span></li> <li><span><i>Synthesis. </i>Our results broadly support the plant functional type framework as a way to understand water use strategies, but also highlight species-level differences. </span></li> </ol>
Distribution. Coastal NE Brazil from the S of Rio Grande do Norte State (as far W as Jucurutu, 6° 12° S, 37° 02° W,in the caatinga dry forest scrub of the Serra do Estreito), through Paraiba State to NE Pernambuco State; it is possible that it extends to the left bank of the Rio Sao Francisco in Alagoas State. in Cebidae
Distribution. Coastal NE Brazil from the S of Rio Grande do Norte State (as far W as Jucurutu, 6° 12° S, 37° 02° W,in the caatinga dry forest scrub of the Serra do Estreito), through Paraiba State to NE Pernambuco State; it is possible that it extends to the left bank of the Rio Sao Francisco in Alagoas State.
Data for: Aridity and chronic anthropogenic disturbance as organizing forces of fruit-feeding butterfly assemblages in a Caatinga dry forest
<p><span>Anthropogenic disturbances and climate change are expected to reorganize biodiversity on multiple ecological levels from populations to ecosystems, especially in arid and semiarid regions due to environmental filtering imposed by water stress. This paper examines the individual and combined effects of chronic anthropogenic disturbance and increased aridity on the structure of fruit-feeding butterfly assemblages in a human-modified landscape of Caatinga dry forest, in the northeast of Brazil. Butterflies were recorded monthly across old-growth forest stands and their assemblages were described in terms of taxonomic and functional community-level attributes confronted with different levels of chronic disturbance and aridity. Butterfly assemblages were species-poor but had high species replacement (turnover) along both the chronic disturbance and aridity gradients. We observed a negative effect of aridity on the alpha and beta diversity of butterfly assemblages. Butterfly assemblages across forest stands exposed to high levels of chronic disturbance and aridity had a nested structure. Functional diversity (Rao's Q) and the community-weighted means (CWM) of ocellus-bearing species and monocot-feeding larvae were negatively and positively affected by increased aridity and chronic disturbance, respectively. Our findings suggest that aridity and its combination with chronic disturbance have a drastic effect on the structure of butterfly assemblages in the Caatinga dry forest. These findings highlight that rainfall and chronic disturbances as major drivers of biological reorganization in human-modified landscapes. As aridity increases, Caatinga tends to support taxonomically and functionally impoverished and highly distorted assemblages.</span></p>
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.