SER International Primer on Ecological Restoration
... ruderal and segetal species that presumable co-evolved with them. Ruderals are plants that colonize disturbed sites, whereas segetal typically grow intermixed with crop species. 3. All functional groups necessary for the continued development and/or stability of the restored ecosystems are represent ...
... ruderal and segetal species that presumable co-evolved with them. Ruderals are plants that colonize disturbed sites, whereas segetal typically grow intermixed with crop species. 3. All functional groups necessary for the continued development and/or stability of the restored ecosystems are represent ...
Biosphere Review
... nitrogen gas, most living things don’t have the enzymes necessary to use nitrogen directly from the atmosphere. Tell how we get the nitrogen we need to make proteins and DNA if we can’t get it from breathing. ...
... nitrogen gas, most living things don’t have the enzymes necessary to use nitrogen directly from the atmosphere. Tell how we get the nitrogen we need to make proteins and DNA if we can’t get it from breathing. ...
Can more K-selected species be better invaders? A case study of
... Data regarding immature development and survival have been obtained from earlier studies on the same strains [Duyck & Quilici (2002) for the three Ceratitis species and Duyck et al. (2004b) for B. zonata]. Pre-imaginal developmental times were significantly different among all species ( F3,44 = ...
... Data regarding immature development and survival have been obtained from earlier studies on the same strains [Duyck & Quilici (2002) for the three Ceratitis species and Duyck et al. (2004b) for B. zonata]. Pre-imaginal developmental times were significantly different among all species ( F3,44 = ...
5-2 Limits to growth
... reaches a certain level. These factors operate most strongly when a population is large and dense. They do not affect small, scattered populations as greatly. ...
... reaches a certain level. These factors operate most strongly when a population is large and dense. They do not affect small, scattered populations as greatly. ...
Lack of homeward orientation and increased mobility result in high
... from the grassland edge within the moss-dominated matrix. All traps were emptied every second week. As pitfall captures reflect both levels of activity and of population density (Maelfait & Baert 1975), unbiased period specific mobility estimates (within and between grassland patches) were obtained ...
... from the grassland edge within the moss-dominated matrix. All traps were emptied every second week. As pitfall captures reflect both levels of activity and of population density (Maelfait & Baert 1975), unbiased period specific mobility estimates (within and between grassland patches) were obtained ...
Ecological Succession Notes
... • Ecological Succession – a series of predictable changes that occur in a community over time. • Includes - slow changes in the physical environment or sudden natural disturbances from human activities like clearing forests. ...
... • Ecological Succession – a series of predictable changes that occur in a community over time. • Includes - slow changes in the physical environment or sudden natural disturbances from human activities like clearing forests. ...
Lesson 12 - Alaska Geobotany Center
... (1) (The most common application of the term.) The total number of species in a community, more accurately called richness. (2) (Probably the more accurate way to use the term.) A measure that combines richness with relative abundance or evenness: ...
... (1) (The most common application of the term.) The total number of species in a community, more accurately called richness. (2) (Probably the more accurate way to use the term.) A measure that combines richness with relative abundance or evenness: ...
Ecosystem processes
... recovering from some past disturbance.[9] Ecosystems in similar environments that are located in different parts of the world can have very different characteristics simply because they contain different species.[8] The introduction of non-native species can cause substantial shifts in ecosystem fun ...
... recovering from some past disturbance.[9] Ecosystems in similar environments that are located in different parts of the world can have very different characteristics simply because they contain different species.[8] The introduction of non-native species can cause substantial shifts in ecosystem fun ...
- Wiley Online Library
... raphy since the 1960s (Packer et al., 2005; Swanson et al., 2014). The ...
... raphy since the 1960s (Packer et al., 2005; Swanson et al., 2014). The ...
2306A Course Outline..
... Office hours: Tuesday/Thursday after class (4-5 PM) and by appointment. Email: [email protected] (do not use WebCT email) Web site: www.carleton.ca/~jdean ...
... Office hours: Tuesday/Thursday after class (4-5 PM) and by appointment. Email: [email protected] (do not use WebCT email) Web site: www.carleton.ca/~jdean ...
Stable coexistence of ecologically identical species: conspecific
... Here, we describe another and more general mechanism that may lead to stable coexistence of ecologically identical species. This mechanism relies on individual mating behaviour, resulting in reproductive interference between species. We start from the observation that two general reasons for movemen ...
... Here, we describe another and more general mechanism that may lead to stable coexistence of ecologically identical species. This mechanism relies on individual mating behaviour, resulting in reproductive interference between species. We start from the observation that two general reasons for movemen ...
Habitat Fragmentation Effects on Trophic Processes of
... is the first evidence of a pervasive impact of habitat fragmentation on this fundamental trophic process in a system involving hundreds of species. Regression slopes have been used to compare speciesarea relationships (Steffan-Dewenter & Tscharntke 2000), and we extended this use to trophic processe ...
... is the first evidence of a pervasive impact of habitat fragmentation on this fundamental trophic process in a system involving hundreds of species. Regression slopes have been used to compare speciesarea relationships (Steffan-Dewenter & Tscharntke 2000), and we extended this use to trophic processe ...
Descent with Modification: A Darwinian View of Life
... 8. Explain what Darwin meant by “descent with modification.” 9. Explain what evidence convinced Darwin that species change over time. 10. Explain how Linnaeus’ classification scheme fit Darwin’s theory of evolution by natural selection. 11. Describe the three inferences Darwin made from his observat ...
... 8. Explain what Darwin meant by “descent with modification.” 9. Explain what evidence convinced Darwin that species change over time. 10. Explain how Linnaeus’ classification scheme fit Darwin’s theory of evolution by natural selection. 11. Describe the three inferences Darwin made from his observat ...
SHRIMP TRAWLER BY-CATCH DIVERSITY AND
... and potentially diseased. This could be a new phenomenon based on poor conditions and indicative of an unhealthy bay, or may have been overlooked previously in the study. These species include Sphoeroides annulatus (most individuals were significantly thin with small round lesions on their skin that ...
... and potentially diseased. This could be a new phenomenon based on poor conditions and indicative of an unhealthy bay, or may have been overlooked previously in the study. These species include Sphoeroides annulatus (most individuals were significantly thin with small round lesions on their skin that ...
Alternative states and positive feedbacks in restoration ecology
... system can shift abruptly between two or more states (Figure Ia) [after 20 –21,35,56]. SYSTEM STATE VARIABLES (see Box Glossary) refer to characteristics such as species diversity, abundance, composition or some desired ecosystem service. These state variables are determined by a combination of fact ...
... system can shift abruptly between two or more states (Figure Ia) [after 20 –21,35,56]. SYSTEM STATE VARIABLES (see Box Glossary) refer to characteristics such as species diversity, abundance, composition or some desired ecosystem service. These state variables are determined by a combination of fact ...
Why do brittle stars emit light? Behavioural and evolutionary
... (Forbes, 1843) and O phiopsila californica (A.H, Clark, 1921). These species differ in their lum inous pattern and colour. W hile O. aranea and 0 . californica are known to emit intense green flashes, the lum inous signal o f A. squam ata is far lower. O phiocom ina nigra emits very weak luminous m ...
... (Forbes, 1843) and O phiopsila californica (A.H, Clark, 1921). These species differ in their lum inous pattern and colour. W hile O. aranea and 0 . californica are known to emit intense green flashes, the lum inous signal o f A. squam ata is far lower. O phiocom ina nigra emits very weak luminous m ...
Draft Fisheries Plan Palmerston
... There is a growing awareness that reef and lagoon resources in Palmerston are declining, and that management interventions are needed to maintain and to restore the island’s fisheries and resources. ...
... There is a growing awareness that reef and lagoon resources in Palmerston are declining, and that management interventions are needed to maintain and to restore the island’s fisheries and resources. ...
Genes to ecosystems: exploring the frontiers of
... The major goal of this review is to explore how this concept applies to systems for which this approach has not been explicitly employed, yet, are sufficiently developed to explore broader basic and applied issues. We develop our ideas in the context of global change associated with commonly occurri ...
... The major goal of this review is to explore how this concept applies to systems for which this approach has not been explicitly employed, yet, are sufficiently developed to explore broader basic and applied issues. We develop our ideas in the context of global change associated with commonly occurri ...
Kangaroos Threaten One Of Australia`s Last Remaining Original
... ruled out a resettlement programme as too expensive. Resettlement would only relocate the problem. For several years now, researchers from the Institute for Applied Ecology at the University of Canberra and from the Helmholtz Centre for Environmental Research (UFZ) in Leipzig have been investigating ...
... ruled out a resettlement programme as too expensive. Resettlement would only relocate the problem. For several years now, researchers from the Institute for Applied Ecology at the University of Canberra and from the Helmholtz Centre for Environmental Research (UFZ) in Leipzig have been investigating ...
Impact of maximum sustainable yield on competitive community
... Obviously, TMSY has turned into MSY of the second population for which eopt ¼2.5 (Fig. 2c). The above examples show that TMSY exists if species have similar biotic potentials, carrying capacities and competition coefficients and if they do not compete intensively. All of these conditions are hardly e ...
... Obviously, TMSY has turned into MSY of the second population for which eopt ¼2.5 (Fig. 2c). The above examples show that TMSY exists if species have similar biotic potentials, carrying capacities and competition coefficients and if they do not compete intensively. All of these conditions are hardly e ...
The emergence and promise of functional biogeography
... species and phylogenetic diversity) patterns, and ecosystem processes and services. The third is to predict their responses to environmental changes using trait-based predictive functions and models. 13692 | www.pnas.org/cgi/doi/10.1073/pnas.1415442111 ...
... species and phylogenetic diversity) patterns, and ecosystem processes and services. The third is to predict their responses to environmental changes using trait-based predictive functions and models. 13692 | www.pnas.org/cgi/doi/10.1073/pnas.1415442111 ...
Predatory blue crabs induce stronger nonconsumptive
... than even the greatest forces needed to crush oysters in this study, changes of the magnitude seen here are likely to be biologically relevant for smaller crabs which are likely to target this size class of oysters. Further, blue crabs are known to practice size-selective foraging (Ebersole & Kenned ...
... than even the greatest forces needed to crush oysters in this study, changes of the magnitude seen here are likely to be biologically relevant for smaller crabs which are likely to target this size class of oysters. Further, blue crabs are known to practice size-selective foraging (Ebersole & Kenned ...
Theoretical ecology
Theoretical ecology is the scientific discipline devoted to the study of ecological systems using theoretical methods such as simple conceptual models, mathematical models, computational simulations, and advanced data analysis. Effective models improve understanding of the natural world by revealing how the dynamics of species populations are often based on fundamental biological conditions and processes. Further, the field aims to unify a diverse range of empirical observations by assuming that common, mechanistic processes generate observable phenomena across species and ecological environments. Based on biologically realistic assumptions, theoretical ecologists are able to uncover novel, non-intuitive insights about natural processes. Theoretical results are often verified by empirical and observational studies, revealing the power of theoretical methods in both predicting and understanding the noisy, diverse biological world.The field is broad and includes foundations in applied mathematics, computer science, biology, statistical physics, genetics, chemistry, evolution, and conservation biology. Theoretical ecology aims to explain a diverse range of phenomena in the life sciences, such as population growth and dynamics, fisheries, competition, evolutionary theory, epidemiology, animal behavior and group dynamics, food webs, ecosystems, spatial ecology, and the effects of climate change.Theoretical ecology has further benefited from the advent of fast computing power, allowing the analysis and visualization of large-scale computational simulations of ecological phenomena. Importantly, these modern tools provide quantitative predictions about the effects of human induced environmental change on a diverse variety of ecological phenomena, such as: species invasions, climate change, the effect of fishing and hunting on food network stability, and the global carbon cycle.