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8 results for “compound disturbances”
Disentangling compound effects of changing disturbance and regeneration across temperate forest landscapes
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Data from: Compounded perturbations in coastal areas: contrasting responses to nutrient enrichment and the regime of storm-related disturbance depend on life-history traits
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Data from: Drought then wildfire reveals a compound disturbance in a resprouting forest
<p class="MsoNormal">The frequency and intensity of forest disturbances such as drought and fire are increasing globally, with an increased likelihood of multiple disturbance events occurring in short succession. Disturbances layered over one another may influence the likelihood or intensity of subsequent events (a linked disturbance) or impact response and recovery trajectories (a compound disturbance), with substantial implications for ecological spatiotemporal vulnerability. This study evaluates evidence for disturbance interactions of drought followed by wildfire in a resprouting eucalypt-dominated forest (the Northern Jarrah Forest) in southwestern Australia.<span> </span>Sites were stratified by drought (high, low) from previous modelling and ground validation, and fire severity (high, moderate, unburnt) via remote sensing using the relative difference normalised burn ratio (RdNBR). Evidence of a linked disturbance was assessed via fine fuel consumption and remotely sensed fire severity (RdNBR). Compound disturbance effects were quantified at stand scale (canopy height, quadratic mean diameter, stem density) and at the stem scale (mortality).<span> </span>There was no evidence of prior drought influencing fine fuel consumption or fire severity, hence no evidence of a linked disturbance.<span> </span>However, compound disturbance effects were evident; stands previously affected by drought experienced smaller shifts in canopy height, quadratic mean diameter, and stem density than stands without prior drought impact. At the stem scale, size and fire severity were the strongest determinants of stem survival. Proportional resprouting height was higher in high drought sites than in low drought sites (p<0.01), thus, structurally, the low drought stands decreased in height more than the high drought stands. Thus, a legacy of the drought was evident after the wildfire. While these resprouting eucalypt forests have been regarded as particularly resilient, this study illustrates how multiple disturbances can overwhelm the larger tree component and promote an abundance of smaller stems. We suggest that this is early evidence of a structural destabilisation of these forests under a more fire prone, hotter and drier future climate.</p>
Figure 2 from: Bonacci T, Brandmayr P, Zetto Brandmayr T, Daniela Perrotta I, Guarino S, Peri E, Colazza S (2011) Volatile compounds released by disturbed and undisturbed adults of Anchomenus dorsalis (Coleoptera, Carabidae, Platynini) and structure of the pygidial gland. ZooKeys 81: 13-25. https://doi.org/10.3897/zookeys.81.1122
Figure 2 - Light microscope: A Dorsal aspects of pygidial gland; ed, efferent duct; r, reservoir; cc, collecting canal; sl, secretory lobe (Scale bar = 0.5 mm) (not treated with potassium hydroxide) B collecting canal (Scale bar = 0.125 mm) C reservoir with smooth constriction at about one third from its hind end (Scale bar = 0.125 mm) D insertion of collecting canal (black arrow) and efferent duct (white arrow) in the reservoir (Scale bar = 0.05 mm) E collecting canal with apical ramifications (white arrows) (Scale bar = 0.05 mm) F "floret" (sensu Eisner et al. 2001) (Scale bar = 0.015 mm) (treated with potassium hydroxide).
Figure 1 from: Bonacci T, Brandmayr P, Zetto Brandmayr T, Daniela Perrotta I, Guarino S, Peri E, Colazza S (2011) Volatile compounds released by disturbed and undisturbed adults of Anchomenus dorsalis (Coleoptera, Carabidae, Platynini) and structure of the pygidial gland. ZooKeys 81: 13-25. https://doi.org/10.3897/zookeys.81.1122
Figure 1 - Gas chromatograms of volatile compounds collected from disturbed (up) and undisturbed (down) adults of Anchomenus dorsalis. 1 undecane 2 heneicosane 3 (Z)-9 - tricosene 4 tricosane. On the x axis is reported the retention time (minutes). As a stationary phase an HP5–MS capillary column was used. The GC oven temperature program was 60 °C for 5 min, than increased by 10 °C/min to 280 °C.
Figure 3 from: Bonacci T, Brandmayr P, Zetto Brandmayr T, Daniela Perrotta I, Guarino S, Peri E, Colazza S (2011) Volatile compounds released by disturbed and undisturbed adults of Anchomenus dorsalis (Coleoptera, Carabidae, Platynini) and structure of the pygidial gland. ZooKeys 81: 13-25. https://doi.org/10.3897/zookeys.81.1122
Figure 3 - Transmission electron microscope (TEM): A, collecting canal with lumen (lu); the black arrows show interstitial spaces (is) B secretory lobe with secretory lumen (sl) C vesicle (v) with microvilli (mv) D microvilli structure (mv) at highest enlargement (the white arrows show the thin lamina) and E Inner wall of the reservoir with chitinous basal lamina (la) (black arrows) and massive muscle layer around.
Data from: Drought then wildfire reveals a compound disturbance in a resprouting forest
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Effect of Compound Danshen Dripping Pills on Diabetic Patients With Coronary Microcirculation Disturbance
ClinicalTrials.gov study NCT05295329. IPD Sharing: UNDECIDED. Countries: 1. Publications: 0.
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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.