Related Experiment Video
Updated: Mar 1, 2026

12:44
Watershed Planning within a Quantitative Scenario Analysis Framework
Published on: July 24, 2016
8.7K
AEDT: A new concept for ecological dynamics in the ever-changing world
1Department of Ecology and Evolutionary Biology, The University of Arizona, Tucson, Arizona, United States of America.
Plos Biology
|May 31, 2017
Summary
A new ecological concept, asymptotic environmentally determined trajectory (AEDT), addresses equilibrium concerns by including climate change. This framework offers realistic predictions for populations and communities facing environmental shifts.
Area of Science:
- Ecology
- Environmental Science
- Population Dynamics
Background:
- The traditional concept of ecological equilibrium faces challenges due to its inability to account for long-term environmental changes.
- Existing models often lack the predictive power to address the complexities of a changing global climate.
Purpose of the Study:
- To introduce a more general and realistic ecological concept: the asymptotic environmentally determined trajectory (AEDT).
- To provide a framework that incorporates long-term climate change and environmental history into ecological predictions.
- To retain the predictive utility of equilibrium concepts within a dynamic environmental context.
Main Methods:
- The study proposes a theoretical framework for the asymptotic environmentally determined trajectory (AEDT).
- This concept models population or community dynamics as a function of time, environmental history, and biological factors.
- It emphasizes the integration of past environmental conditions and future climate change projections.
Main Results:
- The asymptotic environmentally determined trajectory (AEDT) offers a more realistic approach than traditional equilibrium models.
- It allows for the incorporation of long-term climate change and human influence into ecological predictions.
- The framework maintains significant predictive power while accommodating environmental dynamism.
Conclusions:
- The asymptotic environmentally determined trajectory (AEDT) provides a robust alternative to the controversial concept of ecological equilibrium.
- This new framework is applicable to understanding population genetics, evolution, earth sciences, and economics.
- AEDT facilitates more accurate ecological forecasting in the face of profound global environmental change.
Related Concept Videos
Ecological Disturbance
21.3K
An ecological disturbance is a temporary disruption in the environment resulting from abiotic, biotic, or anthropogenic factors, causing a pronounced change in an ecosystem. The impact of an ecological disturbance, which can depend on its intensity, frequency, and spatial distribution, plays a significant role in shaping the species diversity within the ecosystem.
21.3K
What is an Ecosystem?
47.7K
Overview
47.7K
Modeling with Differential Equations
131
Population dynamics can be described mathematically by considering the population size P(t) as a function of time. The rate of change of the population is then represented by the derivative of P(t). A simple assumption is that the rate of growth is proportional to the size of the population itself. This leads to an exponential growth model, where the population increases rapidly without bound. While this is a useful first approximation, it does not reflect realistic long-term...
131
Ecological Niches
27.0K
All organisms have a position within an ecosystem. The complete set of living and nonliving factors—including food resources, climate, and terrain—that define the position of a given organism are collectively referred to as the organism’s ecological niche.
27.0K
Evolutionary Psychology
1.1K
Evolutionary psychology explores the origins of human behavior and mental processes by framing them within the context of natural selection, a theory famously propounded by Charles Darwin. This field asserts that many behaviors common across human societies — ranging from instinctive fear reactions to complex social interactions — arose as evolutionary adaptations. These adaptations enhanced the survival and reproductive success of our ancestors, thereby becoming embedded in the...
1.1K
Ecological Succession
21.8K
Ecological succession is influenced by the processes of facilitation, inhibition, and toleration. Facilitation occurs when early successional species create more favorable ecological conditions for subsequent species, such as enhanced nutrient, water, or light availability. In contrast, inhibition happens when early successional species create unfavorable ecological conditions for potential successive species, such as limiting resource availability. In some cases, later successional species...
21.8K

