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2,399 results for “fragmentation”
The dynamic matrix predicts population response to long-term experimental forest fragmentation
<div><strong>Context</strong></div> <div> </div> <div>Earth's forests are fragmented. Species' long-term persistence depends on their conservation in fragmented landscapes with remnants embedded in a matrix of human land use. This matrix influences species' persistence in fragments by determining their degree of isolation and the extent to which edge effects alter habitat. Matrix habitat is often dynamic, so its impact on persistence of remnant species changes over time.</div> <div> </div> <div><strong>Objectives</strong></div> <div> </div> <div>Previous research showed that the abundance response of predatory beetle species to matrix habitat predicted their response in fragments with a log-response ratio of about 0.5. When abundance declined in the matrix, there was a smaller but predictable decline in fragments. However, the predictive utility of a fragment:matrix log-response ratio needs testing with functionally different species, more detailed data, and a focus on mechanism.</div> <div> </div> <div><strong>Methods</strong></div> <div> </div> <div>In the Wog Wog habitat fragmentation experiment, we follow a detritivorous amphipod 27 years after forest fragmentation.</div> <div> </div> <div><strong>Results</strong></div> <div> </div> <div>The amphipod's response in habitat fragments was predicted by its response in the matrix with a log-response ratio of about 0.5, similar to predatory beetles. The amphipod's response was explained by its abiotic niche. The amphipod's short-term response did not predict its long-term response.</div> <div> </div> <div><strong>Conclusions</strong></div> <div> </div> <div>The log-response ratio might generalize across the invertebrate food web. For two groups within the Wog Wog experiment, a species' dynamic response in matrix habitat predicted its persistence in fragments. Future work should explore the generality of this finding. With knowledge of projected land use of matrix habitat, a species' matrix response could be used for management planning.</div>
Data for "Absolute binding free energy calculation based on the fragment molecular orbital method and its application in designing novel SHP-2 allosteric inhibitors"
<p>Data for publication "Absolute binding free energy calculation based on the fragment molecular orbital method and its application in designing novel SHP-2 allosteric inhibitors".All structures of complex and input files for FMO , FMO/SMD , FMO/PCM , and COSMO calculation are provided .</p>
Dataset: Plant-mediated effects of fire and fragmentation drive plant–pollinator interaction β-diversity in fire-dependent pine savannas
<p>Interaction β-diversity is a measure essential for understanding and conserving species interactions and ecosystem functioning. Interaction β-diversity explains the variation in species interactions across spatial and temporal gradients, resulting from species turnover or interaction rewiring. Each component of interaction β-diversity has different ecological implications and practical consequences. While interaction β-diversity due to species turnover is related to assembly processes and fragmentation, rewiring can support high biodiversity and confer resilience to ecological networks. However, it is unclear whether both components respond to the same or different ecological drivers. Here, we assessed the ecological drivers of plant–pollinator interaction β-diversity and its components across 24 sites in 9 longleaf pine (LLP) savannas in north and central Florida. We evaluated the effects of flowering plant composition and flower abundance, vegetation, fire regime, soil moisture, terrain characteristics, climate, spatial context and geographic location. We used path analysis to evaluate the drivers of spatial interaction β-diversity and its main components. We then used generalized linear mixed models to assess the temporal patterns of spatial β-diversity among sites within preserves. We found that plant–pollinator networks in LLP savannas are highly variable across space and time, mainly due to species turnover and possibly in response to abiotic gradients and dispersal boundaries. Flower abundance and flowering plant composition, geographic location, fire seasonality, soil moisture, and landscape context were the main drivers of plant–pollinator β-diversity, highlighting the role of fire management and habitat connectivity in preserving plant–pollinator networks.</p>
Fragment-sequencing unveils local tissue microenvironments at single-cell resolution
<p>This dataset contains the Resolve dataset that was used in the publication. Other data set can be found in GEO with the accession number GSE216189. The code that was used during the analysis can be found on our GitHub repository: https://github.com/Moors-Code/Fragment-sequencing</p><p> </p><p> </p>
Dispersal limitation predicts the spatial and temporal filtering of tropical bird communities in isolated forest fragments
<p>The link between dispersal traits and patterns of community assembly remains a frontier in understanding how vertebrate communities persist in fragmented landscapes. Using experimental release trials and intensive field surveys of bird communities in fragmented forests of the Peruvian and Colombian Andes, we demonstrate that morphological traits related to movement (1) predict experimental flight performance and (2) exhibit dispersal-mediated environmental filtering at the community scale. After correcting for body size, four traits hypothesized to influence flight ability (wing length, wing pointedness, wing loading, and eye size) predicted distance flown across a hostile experimental landscape, with successful species having significantly longer pointed wings, carrying less mass per unit wing area (i.e., lower wing loading), and having smaller eyes. Species with larger eyes also displayed increased flight latency, potentially due to disability glare. At the community scale we detected a gradient of dispersal-mediated environmental filtering in fragments compared to reference forest within the same landscape, with relative differences in trait values explained by the temporal and spatial extent of patch isolation. In the Colombian landscape where fragments had been isolated for > 60 years, communities were filtered for species with long and narrow wings and small eyes, especially within the most spatially isolated fragments. We observed the opposite pattern in the more recently fragmented Peruvian landscape (15-30 years): communities within fragments tended to have shorter and more rounded wings compared to those in nearby contiguous forests, suggesting that dispersal-limited species accumulate in the initial years following patch isolation due to "restricted dispersal" and represent an extinction debt yet to be paid. Our results (1) experimentally validate the use of morphological traits as proxies for movement ability in fragmented landscapes, (2) demonstrate that visual acuity functions as a novel dimension of dispersal limitation, and (3) quantify how the spatial and temporal components of patch isolation produce a gradient in dispersal-mediated environmental filtering and extinction debt for communities inhabiting fragments.</p>
Plate Rim Fragment
Apparent flat plate rim or lipped pot rim, with fan-like incisions. Coles Creek to Plaquemines Periods, c. 700 CE - 1200 CE 54mm x 36mm, 15.4g Found in Tensas Parish, Louisiana, 2021 MPQ_02 Source: Objaverse 1.0 / Sketchfab
Round Pedestal Fragment
Stone fragment of round pedestal found at Kantharodai, North Sri Lanka. 5th to 1st centuries. Source: Objaverse 1.0 / Sketchfab
Fragmento de Almofariz | Mortar fragment
Fragmento de almofariz em mármore branco, com uma pega, bordo vertical, base circular e plana. Peça descoberta nas escavações arqueológicas do Castelo de Montemor-o-Novo em 2004. N.º Inv.: CSAUD[1/04]0588 Source: Objaverse 1.0 / Sketchfab
Painted wall fragment 13
3D model created from a 2D public domain image. The imagery is superimposed on both sides to emphasis the fragments colour. Dimensions are relatively accurate except for the depth of the scan which I have estimated to be 38mm, this is the same for similar items. [Wall painting fragment](https://www.metmuseum.org/art/collection/search/252979?searchField=All&sortBy=Relevance&ao=on&showOnly=openAccess&ft=roman+wall+fragment&offset=0&rpp=80&pos=17) via The Metropolitan Museum of Art is licensed under CC0 1.0 Source: Objaverse 1.0 / Sketchfab
Fragment Killeshin
A romanesque fragment set into the N wall of Killeshin. It original position of this fragment is unknown. It is possible it came from a section of the doorway, or given its current location in the lower course of the N Wall, it may be part of a door from the original church or roundtower.  Source: Objaverse 1.0 / Sketchfab
Tombstone Fragment
Part of a Roman tombstone showing an inscription and head of a figure. Found at Blackfriars, London. Now in the British Museum. Date: 100-150. https://research.britishmuseum.org/research/collection_online/collection_object_details.aspx?objectId=3064771&partId=1 84 photos taken in November 2018 with a Sony a6000 and processed in Reality Capture. Source: Objaverse 1.0 / Sketchfab
Astian katkelma, pottery fragment KM14100:8b
Saviastian reunakatkelma, maalauskoristelua. Katkelmaan on merkitty myös aiempi löytö- tai kokoelmanumero. Pohjois-Ubaidin kulttuuri, noin 6500–3800 eaa. Painted pottery sherd, rim fragment. In addition to the collection number of the Finnish Heritage Agency, the fragment has also an earlier marking written on it's side. North Ubaid period (Chalcolithic), ca. 6500–3800 BCE. 3D-digitoitu osana Making Home Abroad / Kotona kulttuurissa -tutkimushanketta 2020-2021, käyttäen digitaalista fotogrammetriaa. 3D-digitointia on yksinkertaistettu huomattavasti katselukokemuksen sujuvoittamiseksi. 3D digitized as part of the Making Home Abroad / Kotona kulttuurissa research project 2020-2021, using digital photogrammetry. The 3D digitization is strongly simplified to ensure a smooth online visualization. Source: Objaverse 1.0 / Sketchfab
Fragment de sarcòfag, BMVB
**CAT** Fragment de sarcòfag policromat procedent del jaciment de Luxor . Datació aproximada a l'Imperi Nou o començament del tercer període intermedi. Donada per Eduard Toda i Güell a la Biblioteca Museu Víctor Balaguer. **ES** Fragmento de sarcófago policromado procedente del yacimiento de Luxor. Datación aproximada del Imperio Nuevo o comienzo del tercer periodo intermedio. Donada por Eduard Toda la Biblioteca Museo Víctor Balaguer. **EN** Fragment of a polychromed sarcophagus from the Luxor archaeological site that dates back approximately to the New Kingdom or Third Intermediate Period. Donated by Eduard Toda i Güell to the Víctor Balaguer Library & Museum. https://www.victorbalaguer.cat/ https://artsandculture.google.com/asset/fragmento-de-sarc%C3%B3fago-con-figuras-mitol%C3%B3gicas-desconocido/DAFQlG4jQZCcTQ?hl=es Model: Aleix Barberà (fotos) Néstor Marqués (processat). Textos: BMVB Source: Objaverse 1.0 / Sketchfab
Columella of Marine Gastropod (Fragment)
**MESH PARAMETERS** **Object Description:** Digitized fragment of Columella of Marine Gastropod; Real-life approximate dimensions 1.5"x1.0"x6.25" **Watertight:** Yes <br> **TEXTURE PARAMETERS** **Count:** 1 **Size:** 8,192 x 8,192 **Delighting:** Yes Source: Objaverse 1.0 / Sketchfab
Fragment of Sculpture
**Fragment of Sculpture in front of University of Warsaw.** Faces: 768,977 Vertices: 386,130 The sculpture is partialy done because of lack of image data. It was impossible to collect data on upper part because height of sculpture. Made from 30+ photos in Agisoft Photoscan. Source: Objaverse 1.0 / Sketchfab
Painted wall fragment 1
3D model created from a 2D public domain image. The imagery is superimposed on both sides to emphasis the fragments colour. Dimensions are relatively accurate except for the depth of the scan which I have estimated to be 38mm, this is the same for similar items. [Wall painting fragment](https://www.metmuseum.org/art/collection/search/245845?searchField=All&sortBy=Relevance&ao=on&showOnly=openAccess&ft=roman+wall+fragment&offset=0&rpp=80&pos=2) via The Metropolitan Museum of Art is licensed under CC0 1.0 Source: Objaverse 1.0 / Sketchfab
Painted wall fragment 18
3D model created from a 2D public domain image. The imagery is superimposed on both sides to emphasis the fragments colour. Dimensions are relatively accurate except for the depth of the scan which I have estimated to be 38mm, this is the same for similar items. [Wall painting fragment with Gorgon mask](https://www.metmuseum.org/art/collection/search/245838?searchField=All&sortBy=Relevance&ao=on&showOnly=openAccess&ft=roman+wall+fragment&offset=0&rpp=80&pos=24) via The Metropolitan Museum of Art is licensed under CC0 1.0 Source: Objaverse 1.0 / Sketchfab
Marksville Incised Fragment
Pottery tempered pot fragment from the Marksville period, 100 BCE - 400 CE. Deep, symetrical insicions in a geometric pattern are typical of cermaic decoration from this culture. MI_01 Source: Objaverse 1.0 / Sketchfab
Astian katkelma, pottery fragment KM14100:7a
Saviastian reunakatkelma, maalauskoristelua. Katkelmaan on merkitty myös aiempi löytö- tai kokoelmanumero. Samarran kulttuuri, noin 5500–4800 eaa. Painted pottery sherd, rim fragment. In addition to the collection number of the Finnish Heritage Agency, the fragment has also an earlier marking written on it's side. Samarra period, ca. 5500–4800 BCE. 3D-digitoitu osana Making Home Abroad / Kotona kulttuurissa -tutkimushanketta 2020-2021, käyttäen digitaalista fotogrammetriaa. 3D-digitointia on yksinkertaistettu huomattavasti katselukokemuksen sujuvoittamiseksi. 3D digitized as part of the Making Home Abroad / Kotona kulttuurissa research project 2020-2021, using digital photogrammetry. The 3D digitization is strongly simplified to ensure a smooth online visualization. Source: Objaverse 1.0 / Sketchfab
Fragment d'un pilar del jaciment de La Draga
**CAT** Mostra de fusta de roure (Quercus sp caducifoli) procedent d'un pilar del jaciment de La Draga (5300-5000 cal aC). Mostra preparada per anàlisi dendrocronològica, es pot veure detall dels anells de creixement de l'arbre i de l'escorça. **ES** Muestra de madera de roble (Quercus sp caducifoli) procedente de un pilar del yacimiento de La Draga (5300-5000 hace falta a. C.). Muestra preparada por análisis de dendrocronología, se puede ver detalle de los anillos de crecimiento del árbol y de la corteza. **EN** Oak wood sample (Quercus sp caducifoli) from a pillar at the La Draga site (5300-5000 BC). Sample prepared for dendrochronology analysis, detail of tree and bark growth rings can be seen. Institucions implicades en el projecte: Museu Arqueològic Comarcal de Banyoles, Institució Milà i Fontanals CSIC, Museu d'Arqueologia de Catalunya, Universitat Autònoma de Barcelona Model: Laia Tubío Source: Objaverse 1.0 / Sketchfab
ScienceDex guides
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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.