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138 results for “scrub”
Data from: Post-fire recovery in coastal sage scrub: seed rain and community trajectory
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Seasonal pulse dynamics of CO2 and N2O, but not NOx, are modulated by exotic grass invasion in California coastal sage scrub
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Identifying mechanisms for successful ecological restoration with salvaged topsoil in coastal sage scrub communities
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Effects of frequent fire and mowing on resprouting shrubs of Florida, USA, scrub
Background: Resprouting is an effective strategy for persistence of perennial plants after disturbances such as fire. However, can disturbances be so frequent that they limit resprouting? We examined the effects of fire and mowing frequency on eight species of resprouting shrubs (three oaks (Quercus chapmanii, Q. inopina, Q. geminata), three ericaceous species (Lyonia fruticosa, L. lucida, Vaccinium myrsinites), and two palmettos (Sabal etonia, Serenoa repens)) in Florida scrub using a factorial field experiment. We burned or mowed plots at four disturbance return intervals (DRI) – either annually, biennially, every three years, or once in six years (with all plots being treated in the sixth year to control for time-since-disturbance). We analyzed plant growth responses (height, aboveground biomass, number of stems) based on sampling pre-treatment, and six months, one, two, and four years post-treatment. We also measured non-structural carbohydrates (NSC) and soil properties to evaluate these factors as potential drivers of resprouting responses. Results: Fire temperatures were hot (mean maxima 414-698 C among burn days), typical of larger fires in Florida scrub. Plant biomass and heights were affected by DRI (being suppressed by frequent disturbance, especially initially) and varied among species with palmettos recovering biomass faster and species within the same genus generally showing similar responses. Biomass recovery in mown vs. burned treatments showed comparable effects of DRI and similar trajectories over time. Numbers of stems were affected by DRI, disturbance type, and species. Stems increased after disturbances, especially with less frequent disturbances and mowing, and subsequently declined over time. NSC concentrations varied among species and over time and was positively related to biomass. One-year post-disturbance, soil moisture and organic matter content were higher in mown plots, while pH was higher in burned plots. Given the slightly lower eleva
Figures 1–2. Scrub-oak habitat where Enaphalodes archboldi was found. 1 in Notes on the natural history of Enaphalodes archboldi Lingafelter and Chemsak, 2002 and E. bingkirki Lingafelter and Santos-Silva, 2018 (Coleoptera: Cerambycidae)
Figures 1–2. Scrub-oak habitat where Enaphalodes archboldi was found. 1) Opened areas with small oak scrubs and sand patches where most specimens were collected. 2) Severed stem that fell on the ground. These could be seen at a distance.
Data from: Burden of scrub typhus among patients with acute febrile illness attending tertiary care hospital in Chitwan, Nepal
<p><span><b>Objectives: </b>Scrub typhus is an emerging neglected tropical disease, reported from many parts of Asia including Nepal. This study aims to determine the seroepidemiology of scrub typhus among febrile patients attending Chitwan Medical College Teaching Hospital (CMCTH), Bharatpur, Nepal.</span></p> <p><span><b>Study design and setting: </b>This was a hospital laboratory based prospective study conducted in CMC-TH (a 600-bed hospital) located in Bharatpur, Chitwan district of Nepal.</span></p> <p><b>Participants</b><b>: </b> A total of 1797 patients visiting CMC-TH with acute febrile illness (temperature more than 38<sup>0</sup>C) were enrolled in this study.</p> <p><span><b>Methods: </b>A total of 1797 blood samples were collected from patients presenting with acute febrile illness. The samples were processed for detection of antibody for scrub typhus by Enzyme Linked Immunosorbent Assay (ELISA) for specific immunoglobulin M (IgM) antibody and Weil-Felix test. </span></p> <p><span><b>Results: </b>Out of 1797 serum sample of febrile patients, 524 (29.2%) were scrub typhus positive. Maximum seropositive cases were from Chitwan district 271 (51.7%) with predominance among females 314 (35.9%). Scrub typhus was common among age group 51-60 years (37.2%) and farmers 182 (37.8%). Highest<b> </b>seropositivity was found in July 60 (57.7%). Fever was common clinical symptom. Thrombocytopenia was seen in 386 (73.7%) and raised transaminase AST 399 (76.1%) among seropositive cases. Weil-Felix test positive were 397 (22.1%) and IgM ELISA 524 (29.2%). The correlation between IgM ELISA and Weil-Felix test showed statistically significant association (r = 0.319, p<0.001).</span></p> <p><span><b>Conclusion: </b>High prevalence of scrub typhus implies that acute febrile patients should be investigated for scrub typhus with high priority. There is utmost need of reliable diagnostic facilities at all level of health care system in Nepal. Infection with scrub typhus was found high and this calls for an urgent need to introduce vaccine against scrub typhus. More sustain and vigorous awareness programs need to be promoted for early diagnosis, treatment and control. </span></p>
Carbon flux and gross primary production of a scrub of Mexico
<p><span>Vegetation fixes C in its biomass through photosynthesis or might release it into the atmosphere through respiration. Measurements of these fluxes would help us to understand ecosystem functioning. This data is related to carbon flux (NEE) colected with the eddy covariance technique (EC_Data). The NEE is the balance between gross primary production (GPP) and ecosystem respiration (Reco) both calculated using the recent R package Reddyproc (Code Reddyproc). The database also include estimates of GPP of MOD17A2H product of MODIS Satellite for four pixels of a site with scrub vegetation in Mexico (GPP_MODIS). The programming code include the pre-procecing of NEE and the Theil-Sen and Linear model to describe the relationship between GPP of EC and GPP of MODIS (Code Theil-Sen).</span></p>
Non-native plant removal and high rainfall years promote post-fire recovery of Artemisia californica in southern California sage scrub
<p>Non-native plant invasions, changes in fire regime, and increasing drought stress all pose important threats to biodiverse mediterranean-climate shrublands. These factors can also interact, with fire and drought potentially creating opportunities for non-native species to establish dominance before native shrubs recover. We carried out post-fire demographic monitoring of the common native shrub <i>Artemisia californica</i> in a southern California sage scrub fragment for 7 years, including several with very low rainfall. Experimental removals of non-native plants were included for the first 4 years. We quantified <i>A. californica</i> post-fire crown resprouting and seedling emergence, and tested effects of precipitation, non-native plants, and their interactions on seedling and adult survival. Only 7 <i>A. californica</i> were confirmed as resprouts; almost all individuals established after the fire from seedlings, with 90% of emergence occurring in the second growing year after fire (spring 2015). Higher spring precipitation increased both adult and seedling survival. Non-native grasses and forbs rapidly recolonized control plots, but the removal treatment reduced non-native cover by nearly 60%. For seedlings, non-native removal reduced the probability of dropping leaves by start of summer drought and increased survival both directly and through positive interactions with rainfall. Non-native removal also reduced mortality in smaller adult plants. By 2020, mean <i>A. californica</i> canopy area was nearly four times greater in non-native removal plots. These findings reinforce the high vulnerability of sage scrub habitat to post-fire loss of shrub cover and potential type conversion, particularly with increasing drought frequency and in stands and species with limited crown resprouting. Yet they also illustrate the potential for targeted management of non-natives immediately after fire to promote recovery of native shrubs in this increasingly endangered community.</p>
Survey of spatial associations of California buckwheat (Eriogonum fasciculatum) and California sagebrush (Artemisia californica) in coastal sage scrub
<p>While models of species coexistence largely focus on how competition defines biological communities, over recent decades, a number of studies show positive plant-plant species interactions (facilitation) can also promote stable coexistence. The long-lived, co-dominant shrubs California buckwheat (<i>E. fasciculatum</i>) and California sagebrush (<i>A. californica</i>) share a well-documented positive association at the habitat level in their native California coastal sage scrub ecosystem, but mechanisms underlying their interactions remain unclear at finer spatial scales. Here, a hypothesis that <i>E. fasciculatum </i>acidifies CSS's alkaline soils and facilitates <i>A. californica </i>through amelioration of alkalinity stress is tested in a greenhouse experiment and association tests in the field. Greenhouse results demonstrate facilitation at early growth stages. In late growth stages, water competition is known to determine the shrubs' interactions with each other, but here, field observations of the shrubs in late growth stages show positive associations between <i>A. californica </i>and <i>E. fasciculatum </i>that have a positive linear relationship to<i> </i>increasing soil pH. These results highlight the importance of understanding lifecycle-long interactions among species in evaluating facilitation's impacts on community structure.</p>
Figures 10-19 from: Hayden JE, Dickel TS (2015) A new Antaeotricha species from Florida sandhills and scrub (Lepidoptera, Depressariidae, Stenomatinae). ZooKeys 533: 133-150. https://doi.org/10.3897/zookeys.533.6004
Figures 10-19 - Antaeotricha spp. dissected genitalia. 10–15 (males): 10 Antaeotricha floridella male genitalic capsule and phallus (Marion Co. Florida, MGCL slide 1672) 11 Antaeotricha floridella (Martin Co. Florida, MGCL slide 1679) 12 Antaeotricha floridella, male genitalia in external view 13 Antaeotricha albulella, Sarasota Co. Florida (FSCA, MGCL slide 1736); 14. Antaeotricha osseella, Marion Co. Florida (FSCA, MGCL slide 1698) 15 Antaeotricha albulella, Levy Co. Florida, detail (FSCA, MGCL slide 1681) 16–19 (females): 16 Antaeotricha floridella, Martin Co. Florida (FSCA, MGCL slide 1680) 17 same as (16), detail of signum 18 Antaeotricha albulella, Escambia Co. Florida (FSCA, MGCL slide 1691) 19 Antaeotricha osseella, New Mexico, Otero Co. detail of signum (FSCA, MGCL slide 1721). a a, anterior apophysis (reduced); b s, bifid setae; d, central denticle of signum; d l, dorsal (interior) lobe of annellus; gn, gnathos; s p, setose pads of sternum VIII; s t, subapical tooth of phallus; th, thumb-like process of valva; v l, ventral (exterior) lobe of annellus. Scale bars = 1 mm.
Figures 1-9 from: Hayden JE, Dickel TS (2015) A new Antaeotricha species from Florida sandhills and scrub (Lepidoptera, Depressariidae, Stenomatinae). ZooKeys 533: 133-150. https://doi.org/10.3897/zookeys.533.6004
Figures 1-9 - Antaeotricha spp. habitus. 1 Antaeotricha floridella, holotype male, dorsum 2 same, venter 3 labels of holotype 4 female, Marion Co. Florida (FSCA) 5 Antaeotricha floridella, Marion Co. Florida (T.S. Dickel Collection), lateral view of male head 6 Antaeotricha osseella, Putnam Co. Florida (FSCA) 7 Antaeotricha albulella, male, Alachua Co. Florida (FSCA) 8 Antaeotricha albulella, male with grayish hind wings, Suwannee Co. Florida (FSCA) 9 Antaeotricha albulella, female, Alachua Co. Florida (FSCA). Scale bars = 5 mm.
Figure 20 from: Hayden JE, Dickel TS (2015) A new Antaeotricha species from Florida sandhills and scrub (Lepidoptera, Depressariidae, Stenomatinae). ZooKeys 533: 133-150. https://doi.org/10.3897/zookeys.533.6004
Figure 20 - Type locality south of Lake Kerr in Ocala National Forest, Florida (29.3320°N, 81.7807°W). Sandhill dominated by pines and understory oaks.
RBG: Regular, Bare, Gel: Does Type of Nail Polish Affect Bacterial Counts After Surgical Scrubbing?
ClinicalTrials.gov study NCT05210920. IPD Sharing: YES. Countries: 1. Publications: 0.
Carbon flux and gross primary production of a scrub of Mexico
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Non-native plant removal and high rainfall years promote post-fire recovery of Artemisia californica in southern California sage scrub
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Survey of spatial associations of California buckwheat (Eriogonum fasciculatum) and California sagebrush (Artemisia californica) in coastal sage scrub
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Data from: Burden of scrub typhus among patients with acute febrile illness attending tertiary care hospital in Chitwan, Nepal
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Orientsia tsutsugamushi stimulates an original gene expression program in monocytes: relationship with gene expression in patients with scrub typhus
GEO Series GSE16463. Homo sapiens. 24 samples. Type: Expression profiling by array.
Orientia tsutsugamushi, the agent of scrub typhus, induces an inflammatory program in human macrophages
GEO Series GSE38194. Homo sapiens. 8 samples. Type: Expression profiling by array.
Scrub typhus in northern Thailand
<p>Video created to raise awareness and spread knowledge on scrub typhus among healthcare workers and village health volunteers working in Chiang Rai province, northern Thailand.</p>
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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.