A5012758433- Species Distribution and Climate Change
- Ecology and Vegetation Dynamics Studies
- Plant Water Relations and Carbon Dynamics
- Tree-ring climate responses
- Fire effects on ecosystems
- Plant and animal studies
- Remote Sensing in Agriculture
- Forest ecology and management
- Animal and Plant Science Education
- Wildlife Ecology and Conservation
- Climate variability and models
- Forest Ecology and Biodiversity Studies
- Lichen and fungal ecology
- Botany and Plant Ecology Studies
- Forest Management and Policy
- Insect and Arachnid Ecology and Behavior
- Physiological and biochemical adaptations
- Ecosystem dynamics and resilience
- Mollusks and Parasites Studies
- Zoonotic diseases and public health
- Flood Risk Assessment and Management
- Plant responses to elevated CO2
- Climate change impacts on agriculture
- Noise Effects and Management
- Isotope Analysis in Ecology
The Nature Conservancy
2020-2024
Harvard University
2017-2021
U.S. National Arboretum
2014-2020
Tufts University
2015-2019
University of Washington
2010-2016
Harvard University Press
2016
Seattle University
2012
The collective impact of humans on biodiversity rivals mass extinction events defining Earth's history, but does our large population also present opportunities to document and contend with this crisis? We provide the first quantitative review biodiversity-related citizen science determine whether data collected by these projects can be, are currently being, effectively used in research. find strong evidence potential science: within we sampled (n = 388), ∼1.3 million volunteers participate,...
Does climate determine species' ranges? Rapid rates of anthropogenic warming make this classic ecological question especially relevant. We ask whether controls range limits by quantifying relationships between climatic variables (precipitation, temperature) and tree growth across the altitudinal ranges six Pacific Northwestern conifers on Mt. Rainier, Washington, USA. Results for three species ( Abies amabilis , Callitropsis nootkatensis Tsuga mertensiana ) whose upper occur at treeline...
Abstract A central challenge in global change research is the projection of future behavior a system based upon past observations. Tree‐ring data have been used increasingly over last decade to project tree growth and forest ecosystem vulnerability under climate conditions. But how can response variation predict future, when does not look like past? Space‐for‐time substitution (SFTS) one way overcome problem extrapolation: at given location warmer assumed follow today. Here we evaluated an...
Abstract Climate change is exacerbating the need for urban greening and associated environmental human well-being benefits. Trees can help mitigate heat, but more detailed understanding of cooling effects green infrastructure are needed to guide management decisions deploy trees as effective equitable climate adaptation infrastructure. We investigated how affect summer air temperature along sidewalks within a neighborhood Tacoma, Washington, USA, what extent reduce risks high temperatures...
• Premise of the study: The extent to which climate controls species’ range limits is a classic biological question that particularly relevant given anthropogenic change. While known play role in species distributions, biotic interactions such as competition also affect limits. Furthermore, climatic and ranges may vary strength across life stages, implying complex shift dynamics with Methods: We quantified competitive influences on growth juvenile adult trees three conifer Mt. Rainier,...
Forecasts of widespread range shifts with climate change stem from assumptions that drives species' distributions. However, local adaptation and biotic interactions also influence limits thus may impact shifts. Despite the potential importance these factors, few studies have directly tested their effects on performance at limits. We address how population-level variation affect by transplanting seeds seedlings western North American conifers different origin populations into competitive...
Premise of the Study Plant phenology is a critical trait, as timings phenophases such budburst, leafout, flowering, and fruiting, are important to plant fitness. Despite much study about when individual occur how they may shift with climate change, little known multiple relate one another across an entire growing season. We test extent which early phenological stages constrain later ones, throughout season, 25 angiosperm tree species. Methods observed (budburst, senescence) 118 trees...
Recently, multiple studies have reported declining phenological sensitivities (∆ days per ℃) with higher temperatures. Such observations been used to suggest climate change is reshaping biological processes, major implications for forecasts of future change. Here, we show that these results may simply be the outcome using linear models estimate nonlinear temperature responses, specifically events occur after a cumulative thermal threshold met-a common model many events. Corrections...
Summary Climate change causes both temporal (e.g. advancing spring phenology) and geographic range expansion poleward) species shifts, which affect the photoperiod experienced at critical developmental stages (‘experienced photoperiod’). As is a common trigger of seasonal biological responses – affecting woody plant phenology in 87% reviewed studies that manipulated shifts may have important implications for future distributions fitness. However, has not been focus climate forecasting to...
Climate change has advanced plant phenology globally 4-6 d °C-1 on average. Such shifts are some of the most reported and predictable biological impacts rising temperatures. Yet as climate marched on, phenological have appeared muted over recent decades - failing to match simple predictions an advancing spring with continued warming. The main hypothesis for these changing trends is that interactions between cues long-documented in laboratory environments playing a greater role natural due...
Climate plays an important role in determining the geographic ranges of species. With rapid climate change expected coming decades, ecologists have predicted that species will shift large distances elevation and latitude. However, most range assessments are based on coarse-scale models ignore fine-scale heterogeneity could fail to capture dynamics. Moreover, if varies dramatically over short distances, some populations certain may only need migrate tens meters between microhabitats track...
Every year, river floods disrupt millions of lives across the world, impacting individual livelihoods and testing resilience entire communities, with ripple effects through national economies. Not all households communities are equally threatened by floods, but disparities in flood vulnerability within between remain poorly quantified owing to coarse census data inconsistency official hazard maps. Here we address this gap leveraging state-of-the-art estimates novel, fine-scale demographic...
Recent studies highlight the potential of climate change refugia (CCR) to support persistence biodiversity in regions that may otherwise become unsuitable with change. However, a key challenge using CCR for resilient management lies how intersect existing forest strategies, and subsequently influence landscapes buffer species from negative impacts warming climate. We address this temperate coastal forests Pacific Northwestern United States, where declines extent late-successional have...
Identifying the factors that influence climate sensitivity of treeline species is critical to understanding carbon sequestration, forest dynamics, and conservation in high elevation forest/meadow ecotones. Using tree cores from four sub-alpine conifer collected three sides Mt. Rainier, WA, USA, we investigated influences identity sites with different local climates on radial growth–climate relationships. We created chronologies for each at site, determined influential plant-relevant annual...
Humans are the dominant ecological and evolutionary force on planet today, transforming habitats, polluting environments, changing climates, introducing new species, causing other species to decline in number or go extinct. These worrying anthropogenic impacts, collectively termed global change, often viewed as a confounding factor minimize basic studies problem resolve quantify applied studies. However, these ‘accidental experiments’ also represent opportunities gain fundamental insight...
Global change has a large and growing influence on forests, particularly in urban urbanizing areas. Compared to rural forests may experience warmer temperatures, higher CO2 levels, greater nitrogen deposition, with exacerbated differences at forest edges. Thus, comparing help predict future effects of global forests. We focused the conifer western red-cedar (Thuja plicata) test three hypotheses: edges, relative centers, trees 1) temperatures 2) lower seedling recruitment, 3) growth....
Abstract A century of industrial‐scale management has transformed vast swaths forest land across the Pacific Northwest (PNW), USA, from ancient forests with complex structure and diverse habitats to young simple dominated by few species. Consequently, there have been calls restore ecosystem integrity resilience. Here, we apply data a watershed‐scale experiment determine if restoration treatments achieved our goal accelerating development old‐growth characteristics. We provide empirical...
Predicting how climate change will influence forests is challenging. Forest communities are expected to lose cold-adapted trees near their low latitude/elevation range limits, while warm-adapted should increase in abundance high limits ( i.e., 'thermophilization'). However, slow-growing and long-lived trees, paired with climatic sensitivities that differ by species could add complexity these predictions. To address possibilities, we use demographic data collected from Mount Rainier National...