The microbial food web along salinity gradients
... trend of a decreasing number of species as salinity increases are well-characterized, but most functional aspects remain unknown. Thus, for example, there is debate about whether Dunaliella and haloarchaea grow fast, slow or not at all at the ponds where they show maximal abundance [1,2,12], or abou ...
... trend of a decreasing number of species as salinity increases are well-characterized, but most functional aspects remain unknown. Thus, for example, there is debate about whether Dunaliella and haloarchaea grow fast, slow or not at all at the ponds where they show maximal abundance [1,2,12], or abou ...
Questions for Chapter 55 – Dynamics of Ecosystems
... Answer—As Figure 57.17 suggests, trophic structure and dynamics are interrelated and are primary determinants of ecosystem characteristics and behavior. For example, if a particularly abundant herbivore is threatened, energy that is abundant at the level of primary productivity in an ecosystem may ...
... Answer—As Figure 57.17 suggests, trophic structure and dynamics are interrelated and are primary determinants of ecosystem characteristics and behavior. For example, if a particularly abundant herbivore is threatened, energy that is abundant at the level of primary productivity in an ecosystem may ...
SPECIES ACCOUNT – SNOWSHOE HARE (m
... SEASONAL NEEDS AND KEY HABITAT ATTRIBUTES Assumptions The following assumptions were made when developing this model: • Habitat preferences recorded in the literature from other study areas accurately describe snowshoe hare preferences within the study area. • Recorded habitat preferences reflect ha ...
... SEASONAL NEEDS AND KEY HABITAT ATTRIBUTES Assumptions The following assumptions were made when developing this model: • Habitat preferences recorded in the literature from other study areas accurately describe snowshoe hare preferences within the study area. • Recorded habitat preferences reflect ha ...
document
... Twenty-six dingo attacks on sheep were observed involving 40 dingoes where the sheep were killed outright or where sheep were badly injured and expected to die (n = 8 and 18 respectively) (Table 4). The mean group size of dingoes killing sheep was 1.5 dingoes ( 0.15, range 1 - 4) and the mean age o ...
... Twenty-six dingo attacks on sheep were observed involving 40 dingoes where the sheep were killed outright or where sheep were badly injured and expected to die (n = 8 and 18 respectively) (Table 4). The mean group size of dingoes killing sheep was 1.5 dingoes ( 0.15, range 1 - 4) and the mean age o ...
Urbanization affects refuge use and habituation to
... where they benefit from greater food availability and higher temperatures (Biaggini, Berti, & Corti, 2009). In northern Italy, populations of the common wall lizard show one of the most attractive aspects of its biology, colour polymorphism, with white, yellow or red coloration of the belly in both s ...
... where they benefit from greater food availability and higher temperatures (Biaggini, Berti, & Corti, 2009). In northern Italy, populations of the common wall lizard show one of the most attractive aspects of its biology, colour polymorphism, with white, yellow or red coloration of the belly in both s ...
Genetically engineered organisms and the environment: Current
... (microbe, plant, animal, or synthetic) can be introduced into recipient cells and integrated directly into the organism’s genome. For example, genes for disease resistance would be incorporated into a transgene and introduced directly into the genome of the highyielding line, avoiding the potential ...
... (microbe, plant, animal, or synthetic) can be introduced into recipient cells and integrated directly into the organism’s genome. For example, genes for disease resistance would be incorporated into a transgene and introduced directly into the genome of the highyielding line, avoiding the potential ...
Farmer attitudes toward wolves: Implications for the role of predators
... bovine TB by decreasing the size of prey populations. In addition, wolves have been found to reduce average group sizes of social ungulates such as elk, which effectively reduces elk density (Creel and Winnie, 2005). Because farmer attitudes toward wildlife have important implications for persistenc ...
... bovine TB by decreasing the size of prey populations. In addition, wolves have been found to reduce average group sizes of social ungulates such as elk, which effectively reduces elk density (Creel and Winnie, 2005). Because farmer attitudes toward wildlife have important implications for persistenc ...
NOBANIS - Marine invasive species in Nordic waters
... Although the American razor clam is one of the most abundant bivalve species in many places, no direct impacts on native species or communities have been attributable to this species. This may be due to lack of quantitative data from before the introduction of the American razor clam. It could also ...
... Although the American razor clam is one of the most abundant bivalve species in many places, no direct impacts on native species or communities have been attributable to this species. This may be due to lack of quantitative data from before the introduction of the American razor clam. It could also ...
picture_as_pdf Student-based Performance
... the classroom teacher. This document is not the program of studies. Rather, it is a document intended to provide teachers with examples of some behaviours exhibited by students at the acceptable standard and at the standard of excellence for this course. These lists of behaviours are neither prescri ...
... the classroom teacher. This document is not the program of studies. Rather, it is a document intended to provide teachers with examples of some behaviours exhibited by students at the acceptable standard and at the standard of excellence for this course. These lists of behaviours are neither prescri ...
Competition and aggression for nest cavities between Striated
... requirements, including Eucalyptus viminalis trees for foraging and tree cavities for nesting. The species was originally distributed throughout eastern Tasmania, Australia, but habitat loss and fragmentation resulted in the contraction of its range to just 3 islands and several remnant mainland pat ...
... requirements, including Eucalyptus viminalis trees for foraging and tree cavities for nesting. The species was originally distributed throughout eastern Tasmania, Australia, but habitat loss and fragmentation resulted in the contraction of its range to just 3 islands and several remnant mainland pat ...
The Economic and Social Aspects of Biodiversity Benefits and Costs
... can be overwhelmed. Without full consideration of this service, the value of biodiversity is estimated at up to €385 million per year. The true value would diminish if we managed agricultural and residential pollution better, but rise if fish populations recover or water-based recreational expenditu ...
... can be overwhelmed. Without full consideration of this service, the value of biodiversity is estimated at up to €385 million per year. The true value would diminish if we managed agricultural and residential pollution better, but rise if fish populations recover or water-based recreational expenditu ...
click here for pdf. - The Rewilding Institute
... the pack, usually consisting of 2-8 closely related wolves with strong bonds of attachment that travel, hunt, feed, and rest together in a loose association (Mech 1970; Nowak 1991; Wayne et al. 1995). The “alpha” or breeding pair are usually unrelated (Smith et al. 1997). Breeding usually occurs onl ...
... the pack, usually consisting of 2-8 closely related wolves with strong bonds of attachment that travel, hunt, feed, and rest together in a loose association (Mech 1970; Nowak 1991; Wayne et al. 1995). The “alpha” or breeding pair are usually unrelated (Smith et al. 1997). Breeding usually occurs onl ...
Behavioural responses of wildlife to urban
... are consistent over time and across situations (Reale et al., 2007). Such differences are commonly expressed across a wide range of contexts. For example, an individual that is bold may demonstrate bold behaviour in foraging, mating and predation (Dingemanse & Reale, 2005). An animal’s temperament c ...
... are consistent over time and across situations (Reale et al., 2007). Such differences are commonly expressed across a wide range of contexts. For example, an individual that is bold may demonstrate bold behaviour in foraging, mating and predation (Dingemanse & Reale, 2005). An animal’s temperament c ...
introduction - RUJA - Universidad de Jaén
... toxic effect (due to the insecticide) hiding potential interaction at lower mixtures concentrations. In addition to mixture, treatment frequency was not relevant because has been also hidden for the drastic effect of the insecticide since the first application. The ecological interactions play a rol ...
... toxic effect (due to the insecticide) hiding potential interaction at lower mixtures concentrations. In addition to mixture, treatment frequency was not relevant because has been also hidden for the drastic effect of the insecticide since the first application. The ecological interactions play a rol ...
Bird Conservation International, page 1 of 9 . © BirdLife International
... recognised Important Bird Areas (IBAs) contain Grenada Doves, yet only two of these areas are legally protected (Rusk 2008b). In 1987 and 2007 the global population was estimated roughly to be 50 calling males (100 individuals) and 68 calling males (136 individuals), respectively (Blockstein 1988, R ...
... recognised Important Bird Areas (IBAs) contain Grenada Doves, yet only two of these areas are legally protected (Rusk 2008b). In 1987 and 2007 the global population was estimated roughly to be 50 calling males (100 individuals) and 68 calling males (136 individuals), respectively (Blockstein 1988, R ...
Behavioural responses of wildlife to urban environments
... are consistent over time and across situations (Reale et al., 2007). Such differences are commonly expressed across a wide range of contexts. For example, an individual that is bold may demonstrate bold behaviour in foraging, mating and predation (Dingemanse & Reale, 2005). An animal’s temperament c ...
... are consistent over time and across situations (Reale et al., 2007). Such differences are commonly expressed across a wide range of contexts. For example, an individual that is bold may demonstrate bold behaviour in foraging, mating and predation (Dingemanse & Reale, 2005). An animal’s temperament c ...
environmental science and engineering
... continuously and are inexhaustible. They can be used again and again. Eg: solar energy, wind energy etc. Non-renewable energy resources are energy resource that is not replaced or is replaced only very slowly by natural processes. Eg: fossil fuels--oil, natural gas, and coal. 40. Write briefly about ...
... continuously and are inexhaustible. They can be used again and again. Eg: solar energy, wind energy etc. Non-renewable energy resources are energy resource that is not replaced or is replaced only very slowly by natural processes. Eg: fossil fuels--oil, natural gas, and coal. 40. Write briefly about ...
Streaked horned lark habitat selection and restoration, by Scott F
... The streaked horned lark (Eremophila alpestris strigata) is a recognized subspecies of horned lark. Its breeding range is from the Puget Trough to the Willamette Valley. It has been extirpated from British Columbia, northern Puget Sound and the Rogue River. It is a federal and state candidate specie ...
... The streaked horned lark (Eremophila alpestris strigata) is a recognized subspecies of horned lark. Its breeding range is from the Puget Trough to the Willamette Valley. It has been extirpated from British Columbia, northern Puget Sound and the Rogue River. It is a federal and state candidate specie ...
7th Annual Symposium - Turtle Survival Alliance
... Freshwater Turtle Specialist Group and the Turtle Conservation Fund. It has matured into the largest non-marine chelonian gathering in the world. Each year, we welcome more groups and hope to continue and expand upon past progress. This year, we return once again to St. Louis, the site of what is ar ...
... Freshwater Turtle Specialist Group and the Turtle Conservation Fund. It has matured into the largest non-marine chelonian gathering in the world. Each year, we welcome more groups and hope to continue and expand upon past progress. This year, we return once again to St. Louis, the site of what is ar ...
Lesson Overview
... Biological aspects of an organism’s niche involve the biotic factors it requires for survival, such as when and how it reproduces, the food it eats, and the way in which it obtains that food. Birds on Christmas Island in the Indian Ocean, for example, all live in the same habitat but they prey on fi ...
... Biological aspects of an organism’s niche involve the biotic factors it requires for survival, such as when and how it reproduces, the food it eats, and the way in which it obtains that food. Birds on Christmas Island in the Indian Ocean, for example, all live in the same habitat but they prey on fi ...
Habitat alteration and community-level effects of an exotic mussel
... Among the most successful invaders in marine and freshwater systems are bivalves in the families Mytilidae (sea mussels) and Dreissenidae (false mussels). Mussels have the potential to dramatically affect communities and ecosystems, as they are often dominant space occupiers, can alter habitats thro ...
... Among the most successful invaders in marine and freshwater systems are bivalves in the families Mytilidae (sea mussels) and Dreissenidae (false mussels). Mussels have the potential to dramatically affect communities and ecosystems, as they are often dominant space occupiers, can alter habitats thro ...
Fulltext - ETH E
... Experiments that manipulated plant species richness in temperate grasslands have generally found that species richness increased plant productivity. It has often been suggested that this is due to complementary use of resources—such as nitrogen—by plant species. Complementarity, e.g., in space, chem ...
... Experiments that manipulated plant species richness in temperate grasslands have generally found that species richness increased plant productivity. It has often been suggested that this is due to complementary use of resources—such as nitrogen—by plant species. Complementarity, e.g., in space, chem ...
The effect of intra- and interspecific competition on coexistence in
... Loop analysis and qualitative modeling (Levins 1968, May 1973, Levins 1974, 1975, Justus 2006) focus on evaluating the local stability of coexistence equilibria. Indeed, the two-species coexistence rule can be derived using loop analysis. The main limitation of these approaches is that results can t ...
... Loop analysis and qualitative modeling (Levins 1968, May 1973, Levins 1974, 1975, Justus 2006) focus on evaluating the local stability of coexistence equilibria. Indeed, the two-species coexistence rule can be derived using loop analysis. The main limitation of these approaches is that results can t ...
Deep-Sea Hydrothermal Vent Communities C
... within these limits through processes that parallel those observed in coastal habitats, but sometimes in ways that challenge established ecological theory. Volcanic and tectonic activity can be frequent at vents, changing or destroying habitat and eliminating communities. This disturbance makes larv ...
... within these limits through processes that parallel those observed in coastal habitats, but sometimes in ways that challenge established ecological theory. Volcanic and tectonic activity can be frequent at vents, changing or destroying habitat and eliminating communities. This disturbance makes larv ...
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.