Ching M. Lee results 26
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Canada's Forests Are Shifting From a Recovery‐Driven Carbon Sink to a Disturbance‐Driven Carbon SourceNARA Subscribed
Canada's terrestrial ecosystems are critical to the global carbon cycle and are responding to unprecedented climate change and wildfire disturbance. However, our understanding of Canada's historical (~1920—present) carbon cycle is incomplete. There are also no published physically coherent (i.e., those that respect conservation laws) wall‐to‐wall estimates of all major carbon pools and fluxes for Canada. Existing assessments v...
Non‐Abrupt Vegetation Changes due to Altered Nutrient Balance Make Complex Scale‐Dependent Warming and Cooling EffectsNARA Subscribed
Land‐atmosphere exchanges are mediated by biophysical properties (e.g., albedo change, evaporative cooling) and biogeochemical cycle (e.g., CO 2 fluxes), with both processes exerting global feedback as radiative forcing (). While most research on concentrated on the impact of abrupt vegetation changes, this study investigates the effects on non‐abrupt changes due to altered nutrient levels (i.e., nitrogen [] and phosphorus []...
Post‐Drought Vegetation Shifts Lead to Divergent Carbon, Water and Energy Responses in a Savanna Ecosystem of Southwest ChinaNARA Subscribed
Increasing drought frequency and intensity affect biophysical functions of natural ecosystems. In tropical semi‐arid savannas, while immediate drought effects are well‐studied, the drought legacy effects on vegetation composition and associated ecosystem functions remain unclear. We used data of vegetation composition, net ecosystem CO 2 exchange, surface albedo and evapotranspiration (ET) in 2017–2022 from a savanna ecosystem...
Improved resilience and proteostasis mediate longevity upon DAF-2 degradation in old ageNARA Subscribed
Little is known about the possibility of reversing age-related biological changes when they have already occurred. To explore this, we have characterized the effects of reducing insulin/IGF-1 signaling (IIS) during old age. Reduction of IIS throughout life slows age-related decline in diverse species, most strikingly in the nematode Caenorhabditis elegans . Here we show that even at advanced ages, auxin-induced degradation of...
(1) Background: Roselle (Hibiscus sabdariffa) is a flowering plant reported to have anti-obesity, antioxidant, antibacterial, and anti-inflammatory effects. This study aims to evaluate the UV-absorbing and antioxidant activities of roselle aqueous extracts (RAE) and test the protective effects of RAE against UV radiation in zebrafish embryos. (2) Methods: DPPH assay and UV-spectrum methods were applied to evaluate the antioxid...
Prevalence of potential nitrogen‐fixing, green sulfur bacteria in the skeleton of reef‐building coral I sopora paliferaNARA Subscribed
Microbial endoliths, which inhabit interior pores of rocks, skeletons and coral, are ubiquitous in terrestrial and marine environments. In this study, various colored layers stratified the endolithic environment within the skeleton of Isopora palifera ; however, there was a distinct green‐pigmented layer in the skeleton (beneath the living coral tissue). To characterize diversity of endolithic microorganisms, 16S ribosomal RNA...