A5004967409- Tree-ring climate responses
- Plant Water Relations and Carbon Dynamics
- Geology and Paleoclimatology Research
- Forest ecology and management
- Ecology and Vegetation Dynamics Studies
- Horticultural and Viticultural Research
- Lichen and fungal ecology
- Climate change and permafrost
- Species Distribution and Climate Change
- Tree Root and Stability Studies
- Wildlife Ecology and Conservation
- Forest Ecology and Biodiversity Studies
- Wood Treatment and Properties
- Plant and animal studies
- Remote Sensing in Agriculture
- Forest Insect Ecology and Management
- Cryospheric studies and observations
- Pleistocene-Era Hominins and Archaeology
- Climate variability and models
- Hydrology and Drought Analysis
- Polar Research and Ecology
- Arctic and Russian Policy Studies
- Medieval Architecture and Archaeology
- Rangeland Management and Livestock Ecology
- Plant Pathogens and Fungal Diseases
University of Turin
2023-2025
Ştefan cel Mare University of Suceava
2023-2025
University of Cambridge
2017-2023
Marche Polytechnic University
2012-2018
Swiss Federal Institute for Forest, Snow and Landscape Research
2017-2018
Climate reconstructions for the Common Era are compromised by paucity of annually-resolved and absolutely-dated proxy records prior to medieval times. Where based on combinations different climate archive types (of varying spatiotemporal resolution, dating uncertainty, record length predictive skill), it is challenging estimate past amplitude ranges, disentangle relative roles natural anthropogenic forcing, or probe deeper interrelationships between variability human history. Here, we...
It is generally accepted that animal heartbeat and lifespan are often inversely correlated, however, the relationship between productivity longevity has not yet been described for trees growing under industrial pre-industrial climates. Using 1768 annually resolved absolutely dated ring width measurement series from living dead conifers grew in undisturbed, high-elevation sites Spanish Pyrenees Russian Altai over past 2000 years, we test hypothesis of grow fast-die young. We find maximum tree...
To place recent hydroclimate changes, including drought occurrences, in a long-term historical context, tree-ring records serve as an important natural archive. Here, we evaluate 46 millennium-long based reconstructions for their Data Homogeneity, Sample Replication, Growth Coherence, Chronology Development, and Climate Signal on criteria published by Esper et al. (2016) to assess temperature reconstructions. The compilation of individually calibrated site includes 37 different tree species...
Global temperatures are rising at an unprecedented rate, but environmental responses often difficult to recognize and quantify. Long-term observations of plant phenology, the annually recurring sequence developmental stages, can provide sensitive measures climate change important information for ecosystem services. Here, we present 419 354 recordings first flowering date from 406 species in UK between 1753 2019 CE. Community-wide advanced by almost one month on average when comparing all...
Genetic association studies in forest trees would greatly benefit from information on the response of to environmental stressors over time, which can be provided by dendroecological analysis. Here, we jointly analysed and genetic data surviving silver fir explore basis their iconic stress episode 1970s 1980s that led large-scale dieback Central Europe has been attributed air pollution. Specifically, derived dendrophenotypic measures 190 Bavarian Forest characterize resistance, resilience...
We test the application of parametric, non-parametric, and semi-parametric calibration models for reconstructing summer (June–August) temperature from a set tree-ring width density data on same dendro samples 40 sites across Europe. By comparing performance three pairs" (TRW) maximum (MXD) or blue intensity (MXBI), we whether non-linear response is more prevalent in TRW MXD (MXBI) data, it associated with sensitivity and/or autocorrelation structure parameters. note that have significantly...
The sudden interruption of recurring larch budmoth (LBM; Zeiraphera diniana or griseana Gn.) outbreaks across the European Alps after 1982 was surprising, because populations had regularly oscillated every 8-9 years for past 1200 more. Although ecophysiological evidence limited and underlying processes remained uncertain, climate change has been indicated as a possible driver this disruption. An unexpected, recent return LBM population peaks in 2017 2018 provides insight into insect's...
Abstract More than 200 years after von Humboldt’s pioneering work on the treeline, our understanding of cold distribution limit upright plant growth is still incomplete. Here, we use wood anatomical techniques to estimate degree stem cell wall lignification in 1770 species from six continents. Contrary frequent belief that small plants are less lignified, show ‘woody’ herbs varies considerably. Although trees and shrubs always exhibit lignified walls their stems, above treeline may contain...
Abstract The largest explosive volcanic eruption of the Common Era in terms estimated sulphur yield to stratosphere was identified glaciochemical records 40 years ago, and dates mid-thirteenth century. Despite eventual attribution Samalas (Rinjani) volcano Indonesia, date remains uncertain, climate response only partially understood. Seeking a more global perspective on summer surface temperature hydroclimate change following eruption, we present an analysis 249 tree-ring chronologies...
Contextualising anthropogenic warming and investigating linkages between past climate variability human history require high-resolution temperature reconstructions that extend before the period of instrumental measurements. Here, we present maximum latewood density (MXD) measurements 534 living relict Pinus uncinata trees from undisturbed upper treeline ecotones in Spanish central Pyrenees. Spanning 1119–2020 CE continuously, our new MXD composite chronology correlates significantly with...
The high temperature sensitivity of pine trees in northern Fennoscandia has led to some the most reliable tree-ring climate reconstructions world for past millennia. However, wood anatomical anomalies that likely reflect temperature-induced reductions cell wall lignification, so-called Blue Rings (BRs), have not yet been systematically investigated and shrubs Europe. Here, we present frontier research on occurrence BRs Pinus sylvestris Juniperus communis (L) s.l. from upper treeline Norway...
The quantitative assessment of wood anatomical traits offers important insights into those factors that shape tree growth. While it is known conduit diameter, cell wall thickness, and density vary substantially between within species, the interconnection traits, tree-ring width, height age, as well environment effects on anatomy remain unclear. Here, we measure derived 65 in cross-sections five outermost rings (2008–2012) 30 Norway spruce (Picea abies (L.) H. Karst.) trees growing along an...
Abstract ‘ Blue Rings’ (BRs) are distinct wood anatomical anomalies recently discovered in several tree species from different sites. While it is evident that they associated with a cooling-induced lack of cell wall lignification, BRs have yet to be evaluated systematically paleoclimate studies. Here, we present continuous assessment 31 living and relict pine samples high-elevation site the central Spanish Pyrenees span period 1150–2017 CE at annual resolution. most BR years coincide cold...
Linked to major volcanic eruptions around 536 and 540 CE, the onset of Late Antique Little Ice Age has been described as coldest period past two millennia. The exact timing spatial extent this exceptional cold phase are, however, still under debate because limited resolution geographical distribution available proxy archives. Here, we use 106 wood anatomical thin sections from 23 forest sites 20 tree species in both hemispheres search for cell-level fingerprints ephemeral summer cooling...
The first large-scale network of tree-ring chronologies from the western Mediterranean (WM; 32°N–43°N, 10°W–17°E) is described and analyzed to identify seasonal climatic signal in indices annual ring width. Correlation rotated empirical orthogonal function analyses are applied 85 series corresponding gridded climate data assess embedded network. Chronologies range length 80 1129 years. Monthly correlations partial show overall positive associations for Pinus halepensis (PIHA) Cedrus...
Two hundred years after von Humboldt's pioneering work on the upper treeline, and many fundamental studies thereafter, rate of past elevational changes in one most fascinating biogeographic boundaries our planet remains poorly understood. Here, we distinguish conceptually between realised potential treeline positions present an ensemble model approach to simulate mean fluctuations for 2000 years. Based dendrochronological summer temperature records, simple, though efficient shows that alpine...
Abstract Defining plant development timing through seasonal growth and dormancy phases is a valuable proxy for studying climate change serves as an annual bioindicator. However, current methods determining the growing season vary due to species‐specific interpretations differing understandings of its main drivers. Körner et al. (2023) introduced four non‐interchangeable definitions seasons clarify this complex issue. While some studies have paired different methods, none simultaneously...