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387 results for “National Survey”
R_JAGS code for estimation and analysis of species-area-relationship (SAR) parameters from NEON (National Ecological Observatory Network) data on plant surveys
<p><span>Invasive species science is heavily geared toward the invasive agent. </span>However, management to protect native species also requires a proactive approach focused on understanding the features affecting community vulnerability to invasion impacts<span>. </span><span>Vulnerability </span><span>is likely the result of </span><span>factors acting across spatial scales, from </span><span>local to regional, and it is the combined effects of these factors that will determine the magnitude of vulnerability.</span><span> We introduce an analytical framework that quantifies the scale-dependent impact of biological invasions from the shape of the native species-area-relationship (SAR). We leverage newly available, biogeographically extensive vegetation data from the US National Ecological Observatory Network to assess plant community vulnerability to invasion impact as a function of factors acting across scales. We analyzed more than 1000 SARs widely distributed across the USA along environmental gradients and under different levels of invasion. </span>Results show that a decrease in native richness is consistently associated with invasive species cover<span>, but it is only at relatively high levels of invasion that native richness is compromised. After accounting for variation in baseline ecosystem diversity, net primary productivity, and human modification, ecoregions that are colder and wetter seem to be most vulnerable to losses of native plant species at the local level, while warmer and wetter areas seem most susceptible at the landscape level. We also document how the combined effects of cross-scale factors result in a heterogenous spatial pattern of vulnerability. </span><span>This pattern </span><span>cannot be predicted by analyses at any single scale, underscoring the importance of accounting for factors acting across scales. Simultaneously assessing differences in vulnerability between distinct plant communities at local, landscape and regional scales provided outputs that can be used to inform policy and management aimed at reducing vulnerability to the impact of plant invasions.</span></p>
FIGURE 16 in Herpetological Survey of Iona National Park and Namibe Regional Natural Park, with a Synoptic List of the Amphibians and Reptiles of Namibe Province, Southwestern Angola
FIGURE 16. Adult Dwarf Plated Lizard, Cordylosaurus subtessellatus (Smith, 1844), from near Espinheira. Photo by Edward Stanley.
FIGURE 19 in Herpetological Survey of Iona National Park and Namibe Regional Natural Park, with a Synoptic List of the Amphibians and Reptiles of Namibe Province, Southwestern Angola
FIGURE 19 – Adult Karoo Sand Snake, Psammophis notostictus Peters, 1867, from Espinheira. Photo by Luis Ceríaco.
FIGURE 8 in Herpetological Survey of Iona National Park and Namibe Regional Natural Park, with a Synoptic List of the Amphibians and Reptiles of Namibe Province, Southwestern Angola
FIGURE 8. Adult Barnard's Namib Day Gecko, Rhoptropus barnardi Hewitt, 1926, from Kamanjab, Kunene Region, Namibia. Photo courtesy of Johan Marais.
FIGURE 3 in Herpetological Survey of Iona National Park and Namibe Regional Natural Park, with a Synoptic List of the Amphibians and Reptiles of Namibe Province, Southwestern Angola
FIGURE 3. Anchieta's Ground Agama, Agama anchietae Bocage, 1866, from Sesfontein, Kunene Region, Namibia. Photo courtesy of Johan Marais.
FIGURE 2 in Herpetological Survey of Iona National Park and Namibe Regional Natural Park, with a Synoptic List of the Amphibians and Reptiles of Namibe Province, Southwestern Angola
FIGURE 2. Marbled Rubber Frog, Phrynomantis annectens Werner, 1910, from Palmwag, Kunene Region, Namibia. Photo courtesy of Randall Babb.
FIGURE 7 in Herpetological Survey of Iona National Park and Namibe Regional Natural Park, with a Synoptic List of the Amphibians and Reptiles of Namibe Province, Southwestern Angola
FIGURE 7. Juvenile Angolan Thick-toed Gecko, Pachydactylus angolensis (Loveridge, 1944), from Chimalavera, Benguela Province, Angola. Photo by Luis Ceríaco.
FIGURE 12 in Herpetological Survey of Iona National Park and Namibe Regional Natural Park, with a Synoptic List of the Amphibians and Reptiles of Namibe Province, Southwestern Angola
FIGURE 12. Adult Speckled Sand Skink, Trachylepis punctulata (Bocage, 1872), from Kamanjab, Kunene Region, Namibia. Photo courtesy of Johan Marais.
FIGURE 10 in Herpetological Survey of Iona National Park and Namibe Regional Natural Park, with a Synoptic List of the Amphibians and Reptiles of Namibe Province, Southwestern Angola
FIGURE 10. Adult Boulton's Namibe Day Gecko, Rhoptropus boultoni boultoni Schmidt, 1933, from east of Kamanjab, Kunene Region, Namibia. Photo courtesy of Johan Marais.
FIGURE 9 in Herpetological Survey of Iona National Park and Namibe Regional Natural Park, with a Synoptic List of the Amphibians and Reptiles of Namibe Province, Southwestern Angola
FIGURE 9. Close-up of head of adult specimen of Two-Pored Namib Day Gecko, Rhoptropus biporosus FitzSimons, 1957 from northwest of Palmwag, Kunene Region, Namibia. Photo courtesy of Johan Marais.
FIGURE 15 in Herpetological Survey of Iona National Park and Namibe Regional Natural Park, with a Synoptic List of the Amphibians and Reptiles of Namibe Province, Southwestern Angola
FIGURE 15. Adult specimen of Anchieta's Shovel-snout Lizard, Meroles anchietae, (Bocage, 1867) from gravel plains north of Henties Bay, Erongo Region, Namibia. Photo courtesy of Johan Marais.
FIGURE 14 in Herpetological Survey of Iona National Park and Namibe Regional Natural Park, with a Synoptic List of the Amphibians and Reptiles of Namibe Province, Southwestern Angola
FIGURE 14. Adult Wedged-Snouted Skink, Trachylepis acutilabris (Peters, 1862), from Kamanjab, Kunene Region, Namibia. Photo courtesy of Johan Marais.
FIGURE 6 in Herpetological Survey of Iona National Park and Namibe Regional Natural Park, with a Synoptic List of the Amphibians and Reptiles of Namibe Province, Southwestern Angola
FIGURE 6. Subdult male Pulitzer'sThick-toed Gecko, Chondrodactylus pulitzerae. (Schmidt, 1933), from Chimalavera, Benguela Province, Angola. Photo by Luis Ceríaco.
FIGURE 5 in Herpetological Survey of Iona National Park and Namibe Regional Natural Park, with a Synoptic List of the Amphibians and Reptiles of Namibe Province, Southwestern Angola
FIGURE 5. Adult male FitzSimons'Thick-toed Gecko, Chondrodactylus fitzsimonsi (Loveridge, 1947), from northern Kaokoveld, Kunene Region, Namibia. Photo courtesy of Johan Marais.
FIGURE 4 in Herpetological Survey of Iona National Park and Namibe Regional Natural Park, with a Synoptic List of the Amphibians and Reptiles of Namibe Province, Southwestern Angola
FIGURE 4. Adult male Namib Rock Agama, Agama planiceps Peters, 1862, from Pico Azevedo. Photo by Luis Ceríaco.
FIGURE 1 in Herpetological Survey of Iona National Park and Namibe Regional Natural Park, with a Synoptic List of the Amphibians and Reptiles of Namibe Province, Southwestern Angola
FIGURE 1. Map of the main sampled localities: A) Morro do Soba; B) Omauha Lodge; C) Rio Curoca; D) Entrada do Iona; E) Campo das espinheiras; F) Iona; G) Ford car Wreck; H) Pediva; I) Tambor; J) Serra da Leba; K) Pico do Azevedo; L) Caraculo; M) Praia do navio.
FIGURE 18 in Herpetological Survey of Iona National Park and Namibe Regional Natural Park, with a Synoptic List of the Amphibians and Reptiles of Namibe Province, Southwestern Angola
FIGURE 18. Adult Southern Rock Python, Python natalensis (Gmelin, 1788), being sold by a local near Bruco village. Photo by Luis Ceríaco.
FIGURE 17 in Herpetological Survey of Iona National Park and Namibe Regional Natural Park, with a Synoptic List of the Amphibians and Reptiles of Namibe Province, Southwestern Angola
FIGURE 17. Adult female Desert Plated Lizard, Gerrhosaurus skoogi Andersson, 1916, from the coastal dunes, near Praia do Navio. Photo by Arianna Kuhn
FIGURE 11 in Herpetological Survey of Iona National Park and Namibe Regional Natural Park, with a Synoptic List of the Amphibians and Reptiles of Namibe Province, Southwestern Angola
FIGURE 11. Adult Bogert's Speckled Western Burrowing Skink Typhlacontias punctatissimus bogerti Laurent, 1964, from Pico Azevedo. Photo by Edward Stanley.
Figure 1 in Non-native Chelonians in the National Zoological Collections of Zoological Survey of India
Figure 1. Representative of exotic Chelonians (the common snapping turtle, Chelydra serpentina) preserved in Zoological Survey of India, Kolkata, species tag and morphometric measurements. HL = Head Length, SCL = Straight Carapace Length, SCW = Straight Carapace Width, CCL= Curved Carapace Length, CCW- Curved Carapace Width, SPL = Straight Plastron Length, SPW= Straight Plastron Width, BD = Body Depth.
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)
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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.