Shubhi Sharma
A5024727679- Ecology and Vegetation Dynamics Studies
- Species Distribution and Climate Change
- Plant Water Relations and Carbon Dynamics
- Plant and animal studies
- Forest Management and Policy
- Forest ecology and management
- Isotope Analysis in Ecology
- Animal Ecology and Behavior Studies
- Tree-ring climate responses
- Iron Metabolism and Disorders
- COVID-19 and Mental Health
- Ecosystem dynamics and resilience
- Long-Term Effects of COVID-19
- Archaeology and Natural History
- Climate Change and Health Impacts
- COVID-19 impact on air quality
- MXene and MAX Phase Materials
- Evolution and Paleontology Studies
- COVID-19 Clinical Research Studies
- Fire effects on ecosystems
- Leadership, Behavior, and Decision-Making Studies
- Air Quality and Health Impacts
- Graphene research and applications
- Regional Development and Management Studies
- 2D Materials and Applications
Yale University
2021-2024
Duke University
2021-2023
University of Petroleum and Energy Studies
2022
Datta Meghe Institute of Medical Sciences
2022
Amity University
2020
Amity University
2017
Indirect climate effects on tree fecundity that come through variation in size and growth (climate-condition interactions) are not currently part of models used to predict future forests. Trends species abundances predicted from meta-analyses distribution will be misleading if they depend the conditions individuals. Here we find a synthesis North America climate-condition interactions dominate responses two pathways, i) climate, ii) size. Because first increases then declines with size,...
Significance Physiological decline in large, old trees could involve diminished reproductive effort, but evidence is lacking. A global analysis finds that fecundity large pervasive, consistent with physiological decline, thus providing new for tree senescence. For the 20% of species not showing declines, this lack was linked to specific groups, rather data. Large remain important their structural attributes, results highlight critical role intermediate contribution reproduction.
Significance Suitable habitats for forest trees may be shifting fast with recent climate change. Studies tracking the shift in suitable habitat forests have been inconclusive, part because responses tree fecundity and seedling establishment can diverge. Analysis of both components at a continental scale reveals poleward migration northern species that is progress now. Recruitment contribute to spread West, while limits East, despite hotspot Southeast. Fecundity limitation on population...
Abstract The relationships that control seed production in trees are fundamental to understanding the evolution of forest species and their capacity recover from increasing losses drought, fire, harvest. A synthesis fecundity data 714 worldwide allowed us examine hypotheses central quantifying reproduction, a foundation for assessing fitness trees. Four major findings emerged. First, is not constrained by strict trade-off between size numbers. Instead, numbers vary over ten orders magnitude,...
Abstract Aim Our understanding of the mechanisms that maintain forest diversity under changing climate can benefit from knowledge about traits are closely linked to fitness. We tested whether link between and seed number size is consistent with two hypotheses, termed leaf economics spectrum plant syndrome, or reproduction represents an independent dimension related a size–seed trade‐off. Location Most data come Europe, North Central America East Asia. A minority South America, Africa...
Anticipating the next generation of forests requires understanding recruitment responses to habitat change. Tree distribution and abundance depend not only on climate, but also variables, such as soils drainage, competition beneath a shaded canopy. Recent analyses show that North American tree species are migrating in response climate change, which is exposing each population novel climate-habitat interactions (CHI). Because CHI have been estimated for either adult trees or regeneration...
The study of species environmental niches underpins numerous questions in ecology and evolutionary has increasing relevance a rapidly changing world. Environmental niches, characterized from observations organisms, inform about species' specialization multivariate environment space help assess their exposure sensitivity to climate. are also the central concept behind distribution models (SDMs) which predict geographic variation suitability. Despite clear role past processes driving...
The study of species' environmental niches underpins numerous questions in ecology and evolution has increasing relevance a rapidly changing world. Environmental niches, characterized by observations organisms, inform about specialization multivariate environment space help assess their exposure sensitivity to conditions. are also the central concept behind species distribution models (SDMs), which quantify predict geographic variation suitability. Despite clear role past evolutionary...
Abstract The niche is a key concept that unifies ecology and evolutionary biology. However, empirical theoretical treatments of the are mostly performed at species level, neglecting individuals as important units ecological processes. So far, formal mathematical link between individual-level niches higher organismal-level has been lacking, hampering unification theories more accurate forecasts biodiversity change. To fill in this gap, we propose bottom-up approach to derive population from...
WS2 nanocomposites have been widely used as sensing materials for various types of substances. In the present study, synthesis ternary nanocomposite was attempted by incorporating nanographite platelets (NGPs) and tungsten disulphide (WS2) nanoparticles within polystyrene matrix. The synthesized PS/WS2/NGP composites were irradiated with 600 keV Ar+3 ions at a fluence 1×1015 ions/cm2. ion irradiation results in homogeneous dispersion PS matrix cross-linking filler polymer. radiation induced...
This article examines the effects of maternal anemia and iron deficiency on pregnancy outcomes. The supplementation health mother her baby during after childbirth are still well understood. Anemia is a common problem in maternity care. True defined as hemoglobin level below 10.5 g/dL, excluding age pregnancy. Malnutrition, viral bacterial infections, congenital red cell illnesses like Thalassemia most causes anaemia In pregnant women, prevalent cause anaemia. Eliminated reserves, iron-free...
A Correction to this paper has been published: https://doi.org/10.1038/s41467-021-22025-2
The COVID-19 epidemic has put the majority of world under lockdown, and one unintended effect this response been an improvement in global air quality. objective research is to examine correlations between pollution levels (carbon monoxide, ozone, nitrogen dioxide, particulate matter etc.) their impact during COVID-19. Our findings state that can be considered as a major factor spread pandemic. It on chronic diseases including cardiovascular disease diabetes, also associated with increase...