Shalik Ram Sigdel

📖 Published!

This extensive plot-based field resurvey at treelines on the Tibetan Plateau shows that tree mortality is directly related to intraspecific competition, providing new insights into the underlying mechanisms of treeline shifts🌲⛰️

🔎 Read more: buff.ly/Unjacpn

A new era of bioclimatic extremes in the terrestrial Arctic Long-term climate data suggest that the Arctic is entering a new era of bioclimatic extremes threatening cold ecosystems.

Climate change has already reshaped the bioclimatic space of extreme events in the Arctic 🌐❄️ Arctic biodiversity has entered a new era of bioclimatic extremes w/ more droughts, greater winter-warming 📈 & more rain-on-snow events 💧❄️

shorturl.at/pQsVP

Just published in Science Advances ⬇️

Fig. 1 Trajectories of alpine plant communities under climate change.

Acclimation lags in alpine #grasslands reveal early warning signs of #ClimateChange

📖 nph.onlinelibrary.wiley.com/doi/10.1111/...

👆 A #Commentary by @karlandraczek.bsky.social on this article by Bektaş et al.
👇

📖 nph.onlinelibrary.wiley.com/doi/10.1111/...

#LatestIssue

Yes, forest trees die of old age. But the warming climate is killing them faster The warming climate is killing Australia’s forest trees at a faster rate. This offers a glimpse of what may lie ahead for forests globally.

'Yes, forest trees die of old age. But the warming climate is killing them faster' #ClimateEmergency #Globalwarming #trees #eucalypts #plantscience #ecology 🪴🌳🌾🌱🌡️ theconversation.com/yes-forest-t...

#NewPublicationAlert. We are happy to share our new paper published in the @journalofecology.bsky.social. Here, we tested whether positive or negative tree-to-tree interactions drive seedling establishment & mortality within treeline ecotones.
besjournals.onlinelibrary.wiley.com/doi/10.1111/...

With 5 years remaining to meet #SDGs, our @pnas.org study shows: SDG progress has stalled/reversed at high levels, but gains made at low levels. Countries are off track to meet SDGs under current trends.
english.cas.cn/newsroom/res...
www.pnas.org/doi/epdf/10....
@rug.nl, @irees-research.bsky.social

We are hiring: 4 PhD Positions in Ecology / Data Science and one Ecological Data Scientist We are looking for 4 PhD Positions and one Scientific Programmer / Ecological Data Scientist to join the AG Hartig (Theoretical Ecology)

We are hiring: 4 PhD Positions in Ecology / Data Science and one Ecological Data Scientist. For more information, see www.uni-regensburg.de/universitaet...

The asynchronous rise of Northern Hemisphere alpine floras reveals general responses of biotic assembly to orogeny and climate change The asynchronous rise of Northern Hemisphere alpine floras was shaped by general responses to orogeny and climate change.

How have mountain building and climate change shaped alpine biodiversity over millions of years? Check out our new study in Science Advances! www.science.org/doi/10.1126/...

Treeline shifts were better explained by the cold tolerance index based on the species' thermal niche.

Faster boundary shifts near the cold limit of species' niche

Zheng et al.

nph.onlinelibrary.wiley.com/doi/10.1111/...

Our new article published in @newphyt.bsky.social. Here, we provide a crucial progress in understanding how plant species in the treeline respond to climate change by proposing the superior predictive power of a niche-based thermal sensitivity index.
nph.onlinelibrary.wiley.com/doi/10.1111/...

Warming increases the phenological mismatch between carbon sources and sinks in conifers - Nature Climate Change Measurements of carbon fluxes and wood phenology are used to assess carbon sources from photosynthesis and their sink into woody growth along a thermal gradient. The authors show that stem growth adva...

Warming, phenology, and carbon.
A bioclimate linkage.
www.nature.com/articles/s41...

Warming increases the phenological mismatch between carbon sources and sinks in conifers ...

Warming increases the phenological mismatch between carbon sources and sinks in conifers
->Nature | More from Lil Dr Glen EcoChat at BigEarthData.ai

Warming increases the phenological mismatch between carbon sources and sinks in conifers

Read more

#Warming #Carbon #Climate

Warming increases the phenological mismatch between carbon sources and sinks in conifers - Nature Climate Change Measurements of carbon fluxes and wood phenology are used to assess carbon sources from photosynthesis and their sink into woody growth along a thermal gradient. The authors show that stem growth adva...

Warming disrupts the spring synchrony of conifers, decoupling photosynthesis from wood growth. This indicates increased carbon uptake won't necessarily lead to more stored carbon, reducing forests' potential as a carbon sink. @natclimate.nature.com
www.nature.com/articles/s41...

Patterns, dynamics and drivers of alpine treelines and shrublines - Nature Reviews Earth & Environment Alpine treelines and shrublines are advancing to higher elevations in the context of warming. This Review synthesizes global trends in ecotone dynamics, explores the underlying drivers and mechanisms,...

doi.org/10.1038/s430...

Patterns, dynamics and drivers of alpine treelines and shrublines Körner, C. Alpine Plant Life: Functional Plant Ecology of High Mountain Ecosystems (Springer, 2021). Miehe, G., Miehe, S., Vogel, J., Co, S. & Duo, L. Highest treeline in the Northern Hemisphere found in southern Tibet. Mt. Res. Dev. 27, 169–173...

Patterns, dynamics and drivers of alpine treelines and shrublines
->Nature | More info from EcoSearch

Patterns, dynamics and drivers of alpine treelines and shrublines Nature Reviews Earth & Environment, Published online: 24 July 2025; doi:10.1038/s43017-025-00703-9Alpine treelines and shrublines are advancing to higher elevations in the context of warming. This Review synthesizes global trends in ecotone dynamics, explores the underlying drivers and mechanisms, and considers the consequences to alpine regions.

New online! Patterns, dynamics and drivers of alpine treelines and shrublines

Patterns, dynamics and drivers of alpine treelines and shrublines - Nature Reviews Earth & Environment Alpine treelines and shrublines are advancing to higher elevations in the context of warming. This Review synthesizes global trends in ecotone dynamics, explores the underlying drivers and mechanisms,...

Happy to share our new article published in @natrevearthenviron.nature.com !
Here, we investigated the global patterns, dynamics, and drivers of alpine treelines & shrublines, as well as their ecological consequences on alpine environments under a warming climate.
www.nature.com/articles/s43...

New article alert 🚨 for the #FireEcology Journal! By Wentao Lin, Xiaoming Lu, @sigdelshalik.bsky.social, Jiangrong Li, Haifeng Zhu, Jian Sun, Lin Zhang, Gengxin Zhang, J. Julio Camarero & Eryuan Liang #SNFECO @tmtspringer.bsky.social
Read it here: ow.ly/c23y50Vu1VA

Disentangling the drivers of post-fire plant community dynamics in subalpine forests of the Tibetan Plateau - Fire Ecology Background Wildfires impact forests including understory composition and modify environmental conditions such as canopy cover and soil fertility. The recovery of understory plant community composition...

Happy to share our new publication. Here, we explored drivers of post-fire plant community dynamics in subalpine forests.
fireecology.springeropen.com/articles/10....

Our paper just published in Agricultural and Forest Meteorology. Here, we tested the resilience of alpine shrub growth to changing climatic conditions.
www.sciencedirect.com/science/arti...

The way we are, function and change: The information, mass and energy theory

In this paper @joseppenuelas proposes the IME (information, mass, energy) theory, that integrates the 5 laws of life by determining the relationships among information, mass and energy through time and after disturbances ✍️
@csic.es @creaf.cat @iec.cat
www.the-innovation.org/article/doi/...

🌱 Seminar on functional trait ecology 🌱

I'll be discussing my research on Arctic plant traits next 14 Jan at the ECR seminar organised by @dittemch.bsky.social & Nadine Artz. So excited to present alongside legends
@bjenquist.bsky.social & @lacapary.bsky.social. Join us! forms.gle/gemqP82kQgpN...

Impact of Climate Change on Plants in the Nepal Himalayas Growing evidence shows that growth patterns, distribution range shifts, and modifications of adaptation strategies of plants fingerprint the impacts of climate change. Plants growing in the Himal...

link.springer.com/chapter/10.1...

Accelerated succession in Himalayan alpine treelines under climatic warming - Nature Plants Climate warming is accelerating successional dynamics, with late-successional species rapidly outcompeting pioneer species at Himalayan treeline ecotones, offering insight into future forest successio...

Hydrology Paper of the Day @sigdelshalik on modelling the biogeography of fir and birch trees under climate change scenarios: fir trees will move upslope faster than birch trees; competition and succession; spatial analyses via the Programita software; and effects of scale.

The Himalayan tree landscape is shifting—and so are its ecosystems At high elevations, fir trees are outcompeting once-dominant birches amid warmer, drier conditions

Coverage of our recent research progress on Himalayan treeline dynamics (nature.com/articles/s41...) in Science News.

www.science.org/content/arti...

Accelerated succession in Himalayan alpine treelines under climatic warming - Nature Plants Climate warming is accelerating successional dynamics, with late-successional species rapidly outcompeting pioneer species at Himalayan treeline ecotones, offering insight into future forest successio...

New paper by @sigdelshalik in Nature Plants using @gbif.org mediated data:

Accelerated succession in Himalayan alpine treelines under climatic warming

#CiteTheDOI: ❌

https://doi.org/10.1038/s41477-024-01855-0

Protect mountains to protect ecosystem goods and services to the planet. #InternationalMountainDay

Anthromes and forest carbon responses to global change Forest ecosystems absorb and store about 25% of global carbon dioxide emissions annually and are increasingly shaped by human land use and management. Climate change interacts with land use and fores...

nph.onlinelibrary.wiley.com/doi/10.1002/... In 2023, I was part of the symposium “Anthromes, CO2, and Terrestrial Carbon: From the deep past to net-zero”, after which J. Aaron Hogan masterfully led an interesting analysis on how the concept of Anthromes can be used to understand global land carbon.

A Functional Basis for the Assembly of Australian Subtropical Rainforest Tree Communities We surveyed rainforest tree communities across the Australian subtropics (spanning 600 to 2500 mm rainfall year−1) and measured functional traits on 285 (91%) of all recorded species. Hydraulic strat....

🔥 in Ecology Letters 🔥
#Traits describing hydraulic strategies and deciduousness explain the occurrence trends of almost 300 #rainforest #tree species across a steep rainfall gradient in Australia. #FunctionalTraits
dx.doi.org/10.1111/ele....