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16 results for “Gran Chaco”
CLDF dataset accompanying Brid et al.'s "Comparative Wordlist for the Languages of the Gran Chaco Area" from 2022
<p>Cite the source of the dataset as:</p> <blockquote> <p>Brid, Nicolás, Cristina Messineo, and Johann-Mattis List (2022): A Comparative Wordlist for the Languages of the Gran Chaco Area. Leipzig: Max Planck Institute for Evolutionary Anthropology.</p> </blockquote>
Fig. 2. - Physalis viscosa L. A. A in Ethnobotany of the genus Physalis L. (Solanaceae) in the South American Gran Chaco
Fig. 2. - Physalis viscosa L. A. A Maká Indian offers information about the plant; C. Ripe fruit with remains of the accrescent calyx; E. A Choroti Indian shows a branch of the plant. Physalis angulata L.; B, D. Branch with fruit. [Photos. A, E: P. Arenas; B-D: V. Friesen]
Fig. 1 in Ethnobotany of the genus Physalis L. (Solanaceae) in the South American Gran Chaco
Fig. 1. – Geographical location of the indigenous peoples of the Gran Chaco mentioned in this study.
Data from: Increasing synergistic effects of habitat destruction and hunting on mammals over three decades in the Gran Chaco
Habitat destruction and overexploitation are the main threats to biodiversity and where they co-occur, their combined impact is often larger than their individual one. Yet, detailed knowledge of the spatial footprints of these threats is lacking, including where they overlap and how they change over time. These knowledge gaps are real barriers for effective conservation planning. Here, we develop a novel approach to reconstruct the individual and combined footprints of both threats over time. We combine satellite-based land-cover change maps, habitat suitability models, and hunting pressure models to demonstrate our approach for the community of larger mammals (48 species >1 kg) across the 1.1 million km² Gran Chaco region, a global deforestation hotspot covering parts of Argentina, Bolivia, and Paraguay. This provides three key insights. First, we find that the footprints of habitat destruction and hunting pressure expanded considerably between 1985 and 2015, across ~40% of the entire Chaco – twice the area affected by deforestation. Second, both threats increasingly acted together within the ranges of larger mammals in the Chaco (17% increase on average, ±20% SD, cumulative increase of co-occurring threats across 465,000 km2), suggesting large synergistic effects. Conversely, core areas of high-quality habitats declined on average by 38%. Third, we identified remaining priority areas for conservation in the northern and central Chaco, many of which are outside the protected area network. We also identify hotspots of high threat impacts in central Paraguay and northern Argentina, providing a spatial template for threat-specific conservation action. Overall, our findings suggest increasing synergistic effects between habitat destruction and hunting pressure in the Chaco, a situation likely common in many tropical deforestation frontiers. Our work highlights how threats can be traced in space and time to understand their individual and combined impact, even in situations where data are sparse.
Data from: Increasing synergistic effects of habitat destruction and hunting on mammals over three decades in the Gran Chaco
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Distribution. Gran Chaco of W Paraguay and N Argentina (from Formosa and probably Salta S to San Luis provinces). There are some unconfirmed records from SE Bolivia and adjacent Mato Grosso do Sul State, Brazil. in Chlamyphoridae
Distribution. Gran Chaco of W Paraguay and N Argentina (from Formosa and probably Salta S to San Luis provinces). There are some unconfirmed records from SE Bolivia and adjacent Mato Grosso do Sul State, Brazil.
Distribution. Gran Chaco region of C & SE Bolivia, W Paraguay, and N Argentina (from E Salta and Formosa S to Santiago del Estero provinces). in Chlamyphoridae
Distribution. Gran Chaco region of C & SE Bolivia, W Paraguay, and N Argentina (from E Salta and Formosa S to Santiago del Estero provinces).
Distribution. Gran Chaco of SE Bolivia, Paraguay, and Argentina (as far S as Santa Cruz Province), and S Chile (Aisén and Magallanes regions). It has been introduced on Tierra del Fuego I. in Chlamyphoridae
Distribution. Gran Chaco of SE Bolivia, Paraguay, and Argentina (as far S as Santa Cruz Province), and S Chile (Aisén and Magallanes regions). It has been introduced on Tierra del Fuego I.
Data from: What happened in the South American Gran Chaco? Diversification of the endemic frog genus Lepidobatrachus Budgett, 1899 (Anura: Ceratophryidae)
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Supplementary material 1 from: Sarkinen T, Knapp S (2016) Two new non-spiny Solanum (Solanaceae) from the Gran Chaco Americano and a key for the herbaceous glandular-pubescent solanums from the region. PhytoKeys 74: 19-33. https://doi.org/10.3897/phytokeys.74.10159
Occurrence records : Explanation note: Occurrence records of the two new Solanum species.
Figure 3 from: Sarkinen T, Knapp S (2016) Two new non-spiny Solanum (Solanaceae) from the Gran Chaco Americano and a key for the herbaceous glandular-pubescent solanums from the region. PhytoKeys 74: 19-33. https://doi.org/10.3897/phytokeys.74.10159
Figure 3 - Solanum woodii. A Flowering stem B Inflorescence with details of buds, calyx and corolla C Flower at full anthesis (A–B Wood 21787; C Nee et al. 51967; photos by Gwen Davis).
Figure 1 from: Sarkinen T, Knapp S (2016) Two new non-spiny Solanum (Solanaceae) from the Gran Chaco Americano and a key for the herbaceous glandular-pubescent solanums from the region. PhytoKeys 74: 19-33. https://doi.org/10.3897/phytokeys.74.10159
Figure 1 - Solanum michaelis. A Fruiting stem B Inflorescence with details of indumentum of simple, multi-cellular eglandular and glandular trichomes along the stem, calyx and corolla C Flower at full anthesis with buds D Maturing fruit (A–D Nee & Flores 54821: photos by Michael Nee).
Untangling the imprints of climate, geography and land use/cover on bird diversity in the South American Gran Chaco
<p><strong>Aim:</strong> To evaluate the structure of bird communities throughout the South American Gran Chaco determining the effects of climate, geography, and land use/land cover in bird beta diversity, as well as to understand the beta-diversity processes underlying land-use changes across broad spatial ranges.</p> <p><strong>Taxon:</strong> Birds.</p> <p><strong>Location:</strong> South American Gran Chaco.</p> <p><strong>Methods:</strong> We constructed a site-by-species matrix with occurrence probabilities of 293 bird species across 2669 spatial units tiling completely the study area. Based on this matrix, we calculated pairwise dissimilarities scores and performed a hierarchical cluster analysis for describing the spatial configuration of dissimilarities. The clustering result was spatially represented through an original venation map with boundaries between sites widened in the function of their distance in the dendrogram. We used the Generalized Dissimilarity Modelling approach to model beta diversity, using geographic distance, climatic and land use/land cover information as predictors. We mapped beta-diversity patterns using color theory and the HSV color model.</p> <p><strong>Results:</strong> We identified two main clusters of sites across the Gran Chaco, which represent environmentally different sites and harbour very distinct assemblages of species. These main groups are separated by two natural delimiters: The Bermejo-Pilcomayo interfluvium and the Lower Paraná floodplain. Overall, we observed that the percentage of cropland and climatic variables were important shapers of bird beta diversity.</p> <p><strong>Main conclusions:</strong> We provide the first area-wide assessment of land use/land cover effects on bird beta diversity for the Gran Chaco. The distribution of croplands has a marked influence on bird beta diversity at regional scale highlighting the role of anthropic changes in reshaping bird beta diversity within the ecoregion. Taking into account the global increasing conversion of forests into croplands, a growing footprint of land use changes over geographical patterns of bird diversity in forest biomes can be anticipated.</p>
Untangling the imprints of climate, geography and land use/cover on bird diversity in the South American Gran Chaco
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Figure 2 from: Sarkinen T, Knapp S (2016) Two new non-spiny Solanum (Solanaceae) from the Gran Chaco Americano and a key for the herbaceous glandular-pubescent solanums from the region. PhytoKeys 74: 19-33. https://doi.org/10.3897/phytokeys.74.10159
Figure 2 - Distribution map of Solanum michaelis.
Figure 4 from: Sarkinen T, Knapp S (2016) Two new non-spiny Solanum (Solanaceae) from the Gran Chaco Americano and a key for the herbaceous glandular-pubescent solanums from the region. PhytoKeys 74: 19-33. https://doi.org/10.3897/phytokeys.74.10159
Figure 4 - Distribution map of Solanum woodii.
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Allen Brain Atlas
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DANDI Archive for NWB datasets
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International Brain Laboratory public data
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OpenNeuro
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