Jonathan M Chase
Biographic Data
| ID | 4349269 |
|---|---|
| NAME | Jonathan M Chase |
| GIVEN NAMES | Jonathan M |
| FAMILY NAME | Chase |
| SIGNATURE | CHASE J M |
| AFFILIATIONS | German Centre for Integrative Biodiversity Research |
| ORCID | 0000-0001-5580-4303 |
| VERIFIED | Yes |
| TOTAL WORKS | 15 |
| TOTAL CITATIONS | 52 |
| WORKS AS AUTHOR | 15 |
| WORKS AS EDITOR | 0 |
| FIRST PUBLICATION YEAR | 2000 |
| LATEST PUBLICATION YEAR | 2025 |
| H-INDEX | 2 |
Revealing hidden extinction risks in China’s flora through dynamic habitat assessment
The use of Gedi canopy structure for explaining variation in tree species richness in natural forests
Variables describing the abiotic environment (e.g. climate, topography or biogeographic history) have a long tradition of use as predictors of tree species richness patterns. However, these variables may capture variations in richness related to climate, but not those that are related to soil type or forest disturbance. Canopy structure has previously been shown to provide information on the variation of tree species richness, with richness gener…
Environmental Variability in Time and Space
This chapter discusses how variability, through both time and space, will influence the predictions of species' interactions within the niche framework. In each case, it considers how the particular complexity influences the shape of the zero net growth isoclines, the impact vectors, or both, and thus how it alters the outcomes of interspecific interactions.
Comparing Classical and Contemporary Niche Theory
This chapter, which discusses the similarities and differences between the classical and contemporary approaches to the niche, begins with comparisons between consumer–resource and Lotka–Volterra models. It then describes a revised niche framework that seeks to clarify and resurrect the niche concept in a more quantifiable and biologically meaningful way than the previously loosely associated ideas of the niche. The niche framework is used to ill…
Niche Relations within Ecosystems
Ecosystem functioning involves more than just species interactions. There is a huge array of biogeochemical processes and of landscape-level exchanges that are not easily addressed using a niche-based approach. This chapter shows how the processes of species sorting at the community level can profoundly influence patterns of ecosystem functioning. It discusses the short-term effects of biodiversity on ecosystem function and the longer-term effect…
Revising the Niche Concept
This chapter proposes a quantitative definition of niche that includes a species' requirements from and impacts on a factor. Requirements refer to the conditions where an organism's birth rates exceed its death rates on a particular factor, whereas impact refers to the effect that species has on the factor. The explicit recognition of both requirement and impact components of the niche provides a general framework for understanding the problems o…
Designs and Limitations of Empirical Approaches to the Niche
This chapter develops an overview of the ways one might use the niche concept as a framework for empirical studies, first discussing ways in which specific details of the models have been tested previously, using examples from the laboratory and field. Second, it discusses ways in which the niche-based framework can serve as a basis for a variety of empirical research programs. Throughout, the chapter develops the view that the utility of models …
Conclusions
Species Sorting in Communities
Ecologists have wrestled with a number of methods to study more complex communities, each of which has its own strengths and weaknesses. This chapter illustrates how the niche concept can contribute. It discusses community-wide character displacement and shows that similar species might often coexist in local communities. Taking this idea further might predict that species with identical niches should often coexist as hypothesized by Hubbell (200…
Community Succession, Assembly, and Biodiversity
This chapter uses the species sorting process discussed in Chapter 7 to illuminate several processes of interest to community ecologists. Specifically, it discusses how species composition varies among sites through succession and assembly, and how patterns of diversity respond to important environmental gradients such as disturbance and productivity.
The Evolutionary Niche
This chapter discusses how a niche-based approach can allow a direct exploration into a variety of factors that may influence the evolution of an individual's traits—such as exploring how changes in environmental conditions (e.g., resource supply), interacting species, or other factors can influence the traits of an organism. For this reason, the predictions that can be made from a mechanistic, niche-based framework can provide a significantly mo…
Incorporating Biological Complexities
This chapter discusses four types of biological complexity: resource utilization (how interacting species differentially use distinct resource types); behavioral plasticity (variation in a species' behavioral traits in response to environmental, including biotic, conditions); resource allocation plasticity (variation in a species' morphological or physiological traits in response to environmental, including biotic, conditions); and demographic st…
Ecological Niches
Community Succession and Assembly
Skill-Mix Changes and Work Intensification in Nursing
Recent National Health Service (NHS) structural and policy changes have brought with them shifts in the ideals, pace, and physical location of work, with significant consequences for staff. Hospital nurses have experienced increased devolution of managerial responsibility and are under pressure to effect a faster throughput of more acutely ill patients and simultaneously contain service costs. Community nurses have experienced similar pressures, …
Skill-Mix Changes and Work Intensification in Nursing
Recent National Health Service (NHS) structural and policy changes have brought with them shifts in the ideals, pace, and physical location of work, with significant consequences for staff. Hospital nurses have experienced increased devolution of managerial responsibility and are under pressure to effect a faster throughput of more acutely ill patients and simultaneously contain service costs. Community nurses have experienced similar pressures, …
Ecological Niches
Skill-Mix Changes and Work Intensification in Nursing
Recent National Health Service (NHS) structural and policy changes have brought with them shifts in the ideals, pace, and physical location of work, with significant consequences for staff. Hospital nurses have experienced increased devolution of managerial responsibility and are under pressure to effect a faster throughput of more acutely ill patients and simultaneously contain service costs. Community nurses have experienced similar pressures, …
Community Succession and Assembly
Environmental Variability in Time and Space
This chapter discusses how variability, through both time and space, will influence the predictions of species' interactions within the niche framework. In each case, it considers how the particular complexity influences the shape of the zero net growth isoclines, the impact vectors, or both, and thus how it alters the outcomes of interspecific interactions.
Comparing Classical and Contemporary Niche Theory
This chapter, which discusses the similarities and differences between the classical and contemporary approaches to the niche, begins with comparisons between consumer–resource and Lotka–Volterra models. It then describes a revised niche framework that seeks to clarify and resurrect the niche concept in a more quantifiable and biologically meaningful way than the previously loosely associated ideas of the niche. The niche framework is used to ill…
Niche Relations within Ecosystems
Ecosystem functioning involves more than just species interactions. There is a huge array of biogeochemical processes and of landscape-level exchanges that are not easily addressed using a niche-based approach. This chapter shows how the processes of species sorting at the community level can profoundly influence patterns of ecosystem functioning. It discusses the short-term effects of biodiversity on ecosystem function and the longer-term effect…
Revising the Niche Concept
This chapter proposes a quantitative definition of niche that includes a species' requirements from and impacts on a factor. Requirements refer to the conditions where an organism's birth rates exceed its death rates on a particular factor, whereas impact refers to the effect that species has on the factor. The explicit recognition of both requirement and impact components of the niche provides a general framework for understanding the problems o…
Designs and Limitations of Empirical Approaches to the Niche
This chapter develops an overview of the ways one might use the niche concept as a framework for empirical studies, first discussing ways in which specific details of the models have been tested previously, using examples from the laboratory and field. Second, it discusses ways in which the niche-based framework can serve as a basis for a variety of empirical research programs. Throughout, the chapter develops the view that the utility of models …
Conclusions
Species Sorting in Communities
Ecologists have wrestled with a number of methods to study more complex communities, each of which has its own strengths and weaknesses. This chapter illustrates how the niche concept can contribute. It discusses community-wide character displacement and shows that similar species might often coexist in local communities. Taking this idea further might predict that species with identical niches should often coexist as hypothesized by Hubbell (200…
Community Succession, Assembly, and Biodiversity
This chapter uses the species sorting process discussed in Chapter 7 to illuminate several processes of interest to community ecologists. Specifically, it discusses how species composition varies among sites through succession and assembly, and how patterns of diversity respond to important environmental gradients such as disturbance and productivity.
The Evolutionary Niche
This chapter discusses how a niche-based approach can allow a direct exploration into a variety of factors that may influence the evolution of an individual's traits—such as exploring how changes in environmental conditions (e.g., resource supply), interacting species, or other factors can influence the traits of an organism. For this reason, the predictions that can be made from a mechanistic, niche-based framework can provide a significantly mo…
Incorporating Biological Complexities
This chapter discusses four types of biological complexity: resource utilization (how interacting species differentially use distinct resource types); behavioral plasticity (variation in a species' behavioral traits in response to environmental, including biotic, conditions); resource allocation plasticity (variation in a species' morphological or physiological traits in response to environmental, including biotic, conditions); and demographic st…
Ecological Niches
The use of Gedi canopy structure for explaining variation in tree species richness in natural forests
Variables describing the abiotic environment (e.g. climate, topography or biogeographic history) have a long tradition of use as predictors of tree species richness patterns. However, these variables may capture variations in richness related to climate, but not those that are related to soil type or forest disturbance. Canopy structure has previously been shown to provide information on the variation of tree species richness, with richness gener…
Revealing hidden extinction risks in China’s flora through dynamic habitat assessment
Biology (12 works) · Ecology (10 works) · Geography (10 works) · Computer Science (8 works) · Niche (8 works) · Ecological niche (5 works) · Ecology and Vegetation Dynamics Studies (5 works) · Environmental Science (5 works) · Species Distribution and Climate Change (5 works) · Animal Ecology and Behavior Studies (3 works)