A5034253768- Ecosystem dynamics and resilience
- Climate Change and Health Impacts
- Sustainability and Ecological Systems Analysis
- Coral and Marine Ecosystems Studies
- Mental Health Research Topics
- Zoonotic diseases and public health
- Health disparities and outcomes
- Complex Systems and Time Series Analysis
- Marine and fisheries research
- Resilience and Mental Health
- Health Systems, Economic Evaluations, Quality of Life
- Marine and coastal plant biology
- Marine animal studies overview
- Complex Network Analysis Techniques
- Complex Systems and Decision Making
- Coastal and Marine Management
- Coastal wetland ecosystem dynamics
- COVID-19 epidemiological studies
- Functional Brain Connectivity Studies
- Ecology and Vegetation Dynamics Studies
- Mosquito-borne diseases and control
- Emotion and Mood Recognition
- Sleep and related disorders
- Animal Behavior and Welfare Studies
- Effects of Environmental Stressors on Livestock
Wageningen University & Research
2015-2024
Radboud University Nijmegen
2018
Radboud University Medical Center
2018
University Medical Center
2018
Arizona State University
2018
Significance As complex systems such as the climate or ecosystems approach a tipping point, their dynamics tend to become dominated by phenomenon known critical slowing down. Using time series of autorecorded mood, we show that indicators down are also predictive future transitions in depression. Specifically, persons who more likely have transition, mood slower and different aspects correlated. This supports view system may points where reinforcing feedbacks among web symptoms can propagate...
Manage local stressors to promote resilience global change
Significance Inequality is one of the main drivers social tension. We show striking similarities between patterns inequality species abundances in nature and wealth society. demonstrate that absence equalizing forces, such large will arise from chance alone. While natural enemies have an effect nature, societies can be suppressed by wealth-equalizing institutions. However, over past millennium, institutions been weakened during periods societal upscaling. Our analysis suggests due to very...
Alternative stable states in ecology have been well studied isolated, well-mixed systems. However, reality, most ecosystems exist on spatially extended landscapes. Applying existing theory from dynamic systems, we explore how such a spatial setting should be expected to affect ecological resilience. We focus the effect of local disturbances, defining resilience as size area strong disturbance needed trigger shift. show that contrast homogeneous does not decrease gradually bifurcation point...
We currently still lack valid methods to dynamically measure resilience for stressors before the appearance of adverse health outcomes that hamper well-being. Quantifying an older adult's in early stage would aid complex decision-making care. Translating dynamical systems theory humans, we hypothesized three indicators (variance, temporal autocorrelation, and cross-correlation) time series self-rated physical, mental, social were associated with frailty levels adults.We monitored during 100...
Abstract Various complex systems, such as the climate, ecosystems, and physical mental health can show large shifts in response to small changes their environment. These ‘tipping points’ are notoriously hard predict based on trends. However, past 20 years several indicators pointing a loss of resilience have been developed. use fluctuations time series detect critical slowing down preceding tipping point. Most existing models one-dimensional systems. systems generally consist multiple...
Abstract Human sleep/wake cycles follow a stable circadian rhythm associated with hormonal, emotional, and cognitive changes. Changes of this cycle are implicated in many mental health concerns. In fact, the bidirectional relation between major depressive disorder sleep has been well-documented. Despite clear link disturbances subsequent mood, it is difficult to determine from self-reported data which specific changes play most important role association. Here we observe marked activity...
Superimposed on long-term late Paleocene–early Eocene warming (~59 to 52 million years ago), Earth’s climate experienced a series of abrupt perturbations, characterized by massive carbon input into the ocean-atmosphere system and global warming. Here, we examine three most punctuated events this period, Paleocene-Eocene Thermal Maximum 2 3, probe whether they were initiated climate-driven cycle tipping points. Specifically, analyze dynamics indicators acquired from marine sediments detect...
Finding ways to quantify resilience as a predictor of person's resistance health challenges is important improve healthy aging. This study investigated unique sample high-functioning older persons in whom traditional markers frailty and functional decline are largely absent. Translating complex dynamical systems theory humans, indicators postural balance time series may sensitively discriminate levels resilience.This 240 adults (mean age 83.9 ± 2.9 years, 59% male), 94 hikers the Nijmegen...
The dynamics of complex systems, such as ecosystems, financial markets and the human brain, emerge from interactions numerous components. We often lack knowledge to build reliable models for behaviour network systems. This makes it difficult predict potential instabilities. show that one could use natural fluctuations in multivariate time series reveal regions with particularly slow dynamics. multidimensional slowness points direction minimal resilience, sense simultaneous perturbations on...
The concept of physical resilience may help geriatric medicine objectively assess patients' ability to ‘bounce back’ from future health challenges. Indicators putatively forecasting have been developed under two paradigms with different perspectives: Critical Slowing Down and Loss Complexity. This study explored whether these indicators validly reflect the construct in inpatients. Geriatric patients (n = 121, 60% female) had their heart rate activity continuously monitored using a chest-worn...
Abstract Complex systems ranging from societies to ecological communities and power grids may be viewed as networks of connected elements. Such can go through critical transitions driven by an avalanche contagious change. Here we ask, where in a complex network such systemic shift is most likely start. Intuitively, central node seems the source Indeed, topological studies suggest that nodes Achilles heel for attacks. We argue opposite true class which all tend follow state their neighbors,...
Mangrove restoration is underway along tropical coastlines to combat their rapid worldwide decline. However, success limited due local drivers such as eutrophication, and global climate change, yet interactions remain unclear. We conducted a mesocosm experiment assess the impact of increased nutrients temperature on photosynthetic efficiency development black mangrove seedlings. Seedlings exposed high eutrophication showed reduced root growth disproportionally long stems, with lower net...