Population and community
... Biologists also use the term Genet to the organism, which arises from a zygote, whereas others arising asexually are known as Ramet. In a grass or weed species, a number of young plants may arise through runners or stolons, and upon separation from the parent plant form new plants; a group of such ...
... Biologists also use the term Genet to the organism, which arises from a zygote, whereas others arising asexually are known as Ramet. In a grass or weed species, a number of young plants may arise through runners or stolons, and upon separation from the parent plant form new plants; a group of such ...
chapter 53
... Commensalism is an interaction that benefits one species but neither harms nor helps the other (+/0). Commensal interactions are difficult to document in nature because any close association between species likely affects both species, if only slightly. For example, “hitchhiking” species, such a ...
... Commensalism is an interaction that benefits one species but neither harms nor helps the other (+/0). Commensal interactions are difficult to document in nature because any close association between species likely affects both species, if only slightly. For example, “hitchhiking” species, such a ...
speciation - Evolution and Ecology | UC Davis
... •! MAINTENANCE OF SPECIES DIVERSITY: How do various kinds of ecological interactions (competition, predation, parasitism, mutualism, etc.) influence the number of species in a particular place at a particular time?! FUNCTIONAL, ECOLOGICAL, & SPECIES DIVERSITY: DARWIN'S FINCHES! ...
... •! MAINTENANCE OF SPECIES DIVERSITY: How do various kinds of ecological interactions (competition, predation, parasitism, mutualism, etc.) influence the number of species in a particular place at a particular time?! FUNCTIONAL, ECOLOGICAL, & SPECIES DIVERSITY: DARWIN'S FINCHES! ...
The diet and feeding behaviour of feral cats, Felis catus
... the main hunting strategy of these cats consisted of methodical searching, and entering petrel burrows until a prey item has been obtained. Most adult petrels, either breeding or sheltering in burrows, were therefore not pro tected from predation and chicks as well as eggs (as in dicated by stomac ...
... the main hunting strategy of these cats consisted of methodical searching, and entering petrel burrows until a prey item has been obtained. Most adult petrels, either breeding or sheltering in burrows, were therefore not pro tected from predation and chicks as well as eggs (as in dicated by stomac ...
- Miguel A. Fortuna
... person to any other (from the earlier empirical study conduced by Milgram 1967), then the rumor will spread much faster than if it takes a hundred steps. This also aects the time it takes for a disease to spread throughout a population (Pastor-Satorras & Vespignani 2001). Studies of the eects of s ...
... person to any other (from the earlier empirical study conduced by Milgram 1967), then the rumor will spread much faster than if it takes a hundred steps. This also aects the time it takes for a disease to spread throughout a population (Pastor-Satorras & Vespignani 2001). Studies of the eects of s ...
Unit 7: Ecology
... have a growth with a slow start, then a very fast rate of increase and finally the growth slows down and stops. ...
... have a growth with a slow start, then a very fast rate of increase and finally the growth slows down and stops. ...
Insect Ecology
... •If individuals are too numerous, the population will decrease outbreak •If individuals are too few, the female and male adults cannot find each other (utilized in plant protection quarantine) Many species need a continuous contact with their companions „group effect” e. g.: social insects, migrator ...
... •If individuals are too numerous, the population will decrease outbreak •If individuals are too few, the female and male adults cannot find each other (utilized in plant protection quarantine) Many species need a continuous contact with their companions „group effect” e. g.: social insects, migrator ...
The Evolution of Dilution
... • What is the Selfish Herd theory? • How does it affect the population? • What other ways do animals behave due to predation? ...
... • What is the Selfish Herd theory? • How does it affect the population? • What other ways do animals behave due to predation? ...
Hui y McGeoch 2006
... morphological variation within populations is neglected (Gavrilets et al., 2000) since we only concentrate on evolutionary events and neglect the ecological ones (such as how a particular body size predominates in the local population). In each patch, there is a local prey population and a local pre ...
... morphological variation within populations is neglected (Gavrilets et al., 2000) since we only concentrate on evolutionary events and neglect the ecological ones (such as how a particular body size predominates in the local population). In each patch, there is a local prey population and a local pre ...
level demographic consequences of urbanization: an ecological
... 2013). This difficulty may arise, in part, because studies seldom capture species interactions that can shape population processes across a wide range of spatial and temporal scales. A mechanistic understanding of the ecological and evolutionary consequences of anthropogenic change requires study of ...
... 2013). This difficulty may arise, in part, because studies seldom capture species interactions that can shape population processes across a wide range of spatial and temporal scales. A mechanistic understanding of the ecological and evolutionary consequences of anthropogenic change requires study of ...
Long-Term Demographic Trends, Limiting Factors, and the Strength
... the size of a population (Sinclair 1989). The effects of limiting factors, such as weather and food supply, are not related to population size; that is, they are density independent. Regulatory processes, however, involve density-dependent mechanisms. These mediate local interactions among individua ...
... the size of a population (Sinclair 1989). The effects of limiting factors, such as weather and food supply, are not related to population size; that is, they are density independent. Regulatory processes, however, involve density-dependent mechanisms. These mediate local interactions among individua ...
WHY MANAGE WILDLIFE?
... People Management: •EDUCATION – People have more respect for Wildlife Management if they have a good understanding of the issues and concerns (through schools, groups, hunter education, etc.) •ENFORCEMENT – Laws are used to ensure protection of wildlife, and penalize those who abuse wildlife resour ...
... People Management: •EDUCATION – People have more respect for Wildlife Management if they have a good understanding of the issues and concerns (through schools, groups, hunter education, etc.) •ENFORCEMENT – Laws are used to ensure protection of wildlife, and penalize those who abuse wildlife resour ...
Disturbance Ecology - Utah State University
... • 1. Describe the major types of ecological disturbances and how they influence site potential, productivity, and sustainability. • 2. Describe the role of disturbance in ecosystem structure and function. • 3. Discuss disturbance theories and concepts. • 4. Describe disturbance regimes that influenc ...
... • 1. Describe the major types of ecological disturbances and how they influence site potential, productivity, and sustainability. • 2. Describe the role of disturbance in ecosystem structure and function. • 3. Discuss disturbance theories and concepts. • 4. Describe disturbance regimes that influenc ...
Winter - Issue 4 (473KB pdf)
... likely to outcompete natives. Some personality traits—such as boldness and aggression—may be linked. ...
... likely to outcompete natives. Some personality traits—such as boldness and aggression—may be linked. ...
A complex adaptive systems approach
... time, the trait distributions in communities may change in response to environmental changes, which, in turn, changes the processes and consequently the structure of the system. The result of such processes is the focus of complex adaptive systems (CAS) theory. This paper gives an overview of how CA ...
... time, the trait distributions in communities may change in response to environmental changes, which, in turn, changes the processes and consequently the structure of the system. The result of such processes is the focus of complex adaptive systems (CAS) theory. This paper gives an overview of how CA ...
2. Ecological Techniques
... exist for investigating the biotic and abiotic components of ecosystems Field ecologists investigate communities by using random sampling techniques that aim to: • eliminate bias • reduce the effects of chance • minimise errors in obtaining measurements/samples Quadrat and transect sampling are comm ...
... exist for investigating the biotic and abiotic components of ecosystems Field ecologists investigate communities by using random sampling techniques that aim to: • eliminate bias • reduce the effects of chance • minimise errors in obtaining measurements/samples Quadrat and transect sampling are comm ...
File - Oxford Megafauna conference
... Department of Earth Sciences, Natural History Museum, London, UK A global database of some 2400 published and new radiocarbon dates on woolly mammoth (Mammuthus primigenius) has been audited, using objective criteria, to around 1900 ‘good’ dates. This represents by far the largest number of dates fo ...
... Department of Earth Sciences, Natural History Museum, London, UK A global database of some 2400 published and new radiocarbon dates on woolly mammoth (Mammuthus primigenius) has been audited, using objective criteria, to around 1900 ‘good’ dates. This represents by far the largest number of dates fo ...
curriculum map
... All skills introduced in this month are continually developed and are expected to be embedded throughout the school year. COMMON CORE/PA STATE STANDARDS 4.1.7.A. -Describe the relationships between biotic and abiotic components of an ecosystem. - Compare and contrast different biomes and their chara ...
... All skills introduced in this month are continually developed and are expected to be embedded throughout the school year. COMMON CORE/PA STATE STANDARDS 4.1.7.A. -Describe the relationships between biotic and abiotic components of an ecosystem. - Compare and contrast different biomes and their chara ...
Trophic Dynamics in Urban Communities By
... Ecologists have long debated what factors control the trophic (feeding) structure and function of ecosystems. This is more than just a matter of determining “who eats whom”; ecologists have pondered whether there are fundamental rules for determining (a) how many trophic levels an ecosystem can supp ...
... Ecologists have long debated what factors control the trophic (feeding) structure and function of ecosystems. This is more than just a matter of determining “who eats whom”; ecologists have pondered whether there are fundamental rules for determining (a) how many trophic levels an ecosystem can supp ...
Habitat selection determines abundance, richness and species
... Habitat selection can affect population growth rate, abundance and persistence for individual species, but community and metacommunity-level consequences depend on its prevalence among dispersing and colonizing species and how niche axes are partitioned by regional species pools (Pulliam & Danielson ...
... Habitat selection can affect population growth rate, abundance and persistence for individual species, but community and metacommunity-level consequences depend on its prevalence among dispersing and colonizing species and how niche axes are partitioned by regional species pools (Pulliam & Danielson ...
Woodland Ecosystems - Ministry of Environment
... habitat for insects, spiders, mosses and lichens. This diversity supports species such as the rare Propertius duskywing butterfly, which depends entirely on Garry oak ecosystems for its larval food. Woodlands commonly occur with terrestrial herbaceous, coastal bluff and forest ecosystems, adding to ...
... habitat for insects, spiders, mosses and lichens. This diversity supports species such as the rare Propertius duskywing butterfly, which depends entirely on Garry oak ecosystems for its larval food. Woodlands commonly occur with terrestrial herbaceous, coastal bluff and forest ecosystems, adding to ...
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.