Philippa Kaur

Algorithm and model performance Both XGBoost and random forests models are machine learning algorithms with better performance (higher R2 and smaller MSE value) than the linear regression model under the condition that data quality and sample size are the same. However, the models did not yield good results when the data size was small. The […] More

Calculations for hypothetical scenarios In a forest comprising three taxonomic groups, the overall fractional mortality, M, of all trees in height class i is given by $$M_i = (d_{i,1} + d_{i,2} + d_{i,3}){mathrm{/}}(n_{i,1} + n_{i,2} + n_{i,3}),$$ (1) where ni,1, ni,2, and ni,3 are the numbers of living trees in height class i and taxonomic groups […] More

If you are any type of BIPOC, your presence alone in academia will inspire BIPOC early-career researchers. Be mindful with this unexpected influence. Welcome students into your office even when you are under deadlines, as these few minutes may sway their career path. Tell them about the delight and joy you find in science, as […] More

Classifying the tree-level dataset The Sierra Nevada mountains have unique species assemblages following strong topographic gradients, with the most dominant shifts controlled by topography12,13. In the low elevations the canopy is dominated by pines, shifting to fir species in high elevations. South-facing slopes tend to be dominated by drought-tolerant species, while North-facing slopes hold species […] More

1. Lloyd-Smith, J. et al. Epidemic dynamic at the human-animal interface. Science 326, 1362–1367 (2009). CAS  PubMed  PubMed Central  Google Scholar  2. Kilpatrick, A. M. et al. Host heterogeneity dominates West Nile virus transmission. Proc. Biol. Sci. 273, 2327–2333 (2006). PubMed  Google Scholar  3. Woolhouse, M., Taylor, L. H. & Haydon, D. T. Population biology […] More

Sample collection All samples were taken from Salakphra Wildlife Sanctuary with the permission from the Department of National Parks, Wildlife and Plant Conservation (DNP), the approval number DNP 0907.4/4411. A research ethics statement was granted by the Mahidol University-Institute Animal Care and Use Committee (MU-IACUC 2016/026). Salakphra Wildlife Sanctuary (14°8′37.09″N, 99°20′33.51″E, area: ~ 860 km2) is located […] More

A total of 44 genomes sequenced from AOA cultured species or extracted from environmental metagenomes, representing all known ammonia-oxidizing thaumarchaeotal orders, were analyzed and compared in the present study (Table S1). In addition to the 30 genomes that have been previously reported, seven marine and two terrestrial AOA culture genomes as well as five MAGs from […] More

1. Gruber, S. Derivation and analysis of a high-resolution estimate of global permafrost zonation. Cryosphere 6, 221–233 (2012). Google Scholar  2. Hugelius, G. et al. Estimated stocks of circumpolar permafrost carbon with quantified uncertainty ranges and identified data gaps. Biogeosciences 11, 6573–6593 (2014). Google Scholar  3. Jobbágy, E. G. & Jackson, R. B. The vertical […] More