| 1. |
- Sabatini, F. M., et al.
(författare)
-
sPlotOpen - An environmentally balanced, open-access, global dataset of vegetation plots
- 2021
-
Ingår i: Global Ecology and Biogeography. - : Wiley. - 1466-822X .- 1466-8238.
-
Tidskriftsartikel (refereegranskat)abstract
- Motivation Assessing biodiversity status and trends in plant communities is critical for understanding, quantifying and predicting the effects of global change on ecosystems. Vegetation plots record the occurrence or abundance of all plant species co-occurring within delimited local areas. This allows species absences to be inferred, information seldom provided by existing global plant datasets. Although many vegetation plots have been recorded, most are not available to the global research community. A recent initiative, called 'sPlot', compiled the first global vegetation plot database, and continues to grow and curate it. The sPlot database, however, is extremely unbalanced spatially and environmentally, and is not open-access. Here, we address both these issues by (a) resampling the vegetation plots using several environmental variables as sampling strata and (b) securing permission from data holders of 105 local-to-regional datasets to openly release data. We thus present sPlotOpen, the largest open-access dataset of vegetation plots ever released. sPlotOpen can be used to explore global diversity at the plant community level, as ground truth data in remote sensing applications, or as a baseline for biodiversity monitoring. Main types of variable contained Vegetation plots (n = 95,104) recording cover or abundance of naturally co-occurring vascular plant species within delimited areas. sPlotOpen contains three partially overlapping resampled datasets (c. 50,000 plots each), to be used as replicates in global analyses. Besides geographical location, date, plot size, biome, elevation, slope, aspect, vegetation type, naturalness, coverage of various vegetation layers, and source dataset, plot-level data also include community-weighted means and variances of 18 plant functional traits from the TRY Plant Trait Database. Spatial location and grain Global, 0.01-40,000 m(2). Time period and grain 1888-2015, recording dates. Major taxa and level of measurement 42,677 vascular plant taxa, plot-level records. Software format Three main matrices (.csv), relationally linked.
|
|
| 2. |
- Gustafson, Deborah, 1966, et al.
(författare)
-
Anthropometric measures and cognition in middle-aged HIV-infected and uninfected women. The Women's Interagency HIV Study
- 2013
-
Ingår i: Journal of Neurovirology. - : Springer Science and Business Media LLC. - 1355-0284 .- 1538-2443. ; 19:6, s. 574-585
-
Tidskriftsartikel (refereegranskat)abstract
- This study aimed to explore the relationship of body mass index (BMI), waist circumference (WC), and waist-to-hip ratio (WHR) with cognition in women with (HIV+) and without HIV (HIV-) infection. One thousand six hundred ninety participants (1,196 HIV+, 494 HIV-) in the Women's Interagency HIV Study (WIHS) with data available on anthropometric measures comprise the analytical sample. Cross-sectional analyses using linear regression models estimated the relationship between anthropometric variables and Trails A, Trails B, Stroop interference time, Stroop word recall, Stroop color naming and reading, and Symbol Digit Modalities Test (SDMT) with consideration for age, HIV infection status, Wide Range Achievement Test score, CD4 count, insulin resistance, drug use, and race/ethnicity. Among HIV+ women, BMI<18.5 kg/m(2) was associated with poorer cognitive performance evidenced by longer Trails A and Trails B and shorter SDMT completion times. An obese BMI (30 kg/m(2) or higher) was related to better performance on Trails B and worse performance on the Stroop interference test. Among HIV-women, an obese BMI was related to worse performance on the Stroop color naming test. Few and inconsistent associations were observed between WC, WHR, and cognition. Among women at mid-life with chronic (at least 10 years) HIV infection, common anthropometric measures, primarily BMI, were differentially related to cognitive test performance by cognitive domain. Higher levels of BMI were associated with better cognitive function. In this era of antiretroviral therapies, restoration of health evidenced as higher BMI due to effective antiretroviral therapies, may improve cognitive function in middle-aged HIV-infected women.
|
|
| 3. |
- Murphy, K., et al.
(författare)
-
Association of self-reported race with AIDS death in continuous HAART users in a cohort of HIV-infected women in the United States
- 2013
-
Ingår i: Aids. - : Ovid Technologies (Wolters Kluwer Health). - 0269-9370. ; 27:15, s. 2413-2423
-
Tidskriftsartikel (refereegranskat)abstract
- Objective:To assess the association of race with clinical outcomes in HIV-positive women on continuous HAART.Design:Prospective study that enrolled women from 1994 to 1995 and 2001 to 2002.Setting:Women's Interagency HIV Study, a community-based cohort in five US cities.Participants:One thousand, four hundred and seventy-one HIV-positive continuous HAART users.Main outcome measures:Times to AIDS and non-AIDS death and incident AIDS-defining illness (ADI) after HAART initiation.Results:In adjusted analyses, black vs. white women had higher rates of AIDS death [adjusted hazard ratio (aHR) 2.14, 95% confidence interval (CI) 1.30, 3.50; P=0.003] and incident ADI (aHR 1.58, 95% CI 1.08, 2.32; P=0.02), but not non-AIDS death (aHR 0.91, 95% CI 0.59, 1.39; P=0.65). Cumulative AIDS death incidence at 10 years was 17.3 and 8.3% for black and white women, respectively. Other significant independent pre-HAART predictors of AIDS death included peak viral load (aHR 1.70 per log(10), 95% CI 1.34, 2.16; P<0.001), nadir CD4(+) cell count (aHR 0.65 per 100cells/l, 95% CI 0.56, 0.76; P<0.001), depressive symptoms by Center for Epidemiology Studies Depression score at least 16 (aHR 2.10, 95% CI 1.51, 2.92; P<0.001), hepatitis C virus infection (aHR 1.57, 95% CI 1.02, 2.40; P=0.04), and HIV acquisition via transfusion (aHR 2.33, 95% CI 1.21, 4.49; P=0.01). In models with time-updated HAART adherence, association of race with AIDS death remained statistically significant (aHR 3.09, 95% CI 1.38, 6.93; P=0.006).Conclusion:In continuous HAART-using women, black women more rapidly died from AIDS or experienced incident ADI than their white counterparts after adjusting for confounders. Future studies examining behavioral and biologic factors in these women may further the understanding of HAART prognosis.
|
|
