Kreb01.pdf
... susceptible to predators. Lloyd Keith and his students surveyed hare parasite loads for many years in Alberta and concluded that none of the many parasites of the hares caused much direct mortality (Keith et al. 1985). Experimental work with antihelminthics in field populations of hares either had n ...
... susceptible to predators. Lloyd Keith and his students surveyed hare parasite loads for many years in Alberta and concluded that none of the many parasites of the hares caused much direct mortality (Keith et al. 1985). Experimental work with antihelminthics in field populations of hares either had n ...
Life-history characteristics of coral reef gobies. II. Mortality rate
... many small-bodied species, adult mortality may also be considerable because their small size renders them vulnerable to predation throughout life (Munday & Jones 1998). Consequently, early maturity and high reproductive effort is predicted for most small coralreef fishes. Here, we investigate the ti ...
... many small-bodied species, adult mortality may also be considerable because their small size renders them vulnerable to predation throughout life (Munday & Jones 1998). Consequently, early maturity and high reproductive effort is predicted for most small coralreef fishes. Here, we investigate the ti ...
24. Hunter Estuary Wetlands
... Wetlands Ramsar site were reviewed to identify threats to the ecological character of the site. Terminology from these key Ramsar documents was aligned to be consistent with the approach of the Ramsar Rolling Review (see Table 1 explanation notes). The Ramsar Rolling Review uses the IUCN threat clas ...
... Wetlands Ramsar site were reviewed to identify threats to the ecological character of the site. Terminology from these key Ramsar documents was aligned to be consistent with the approach of the Ramsar Rolling Review (see Table 1 explanation notes). The Ramsar Rolling Review uses the IUCN threat clas ...
Lesson Overview - My Teacher Pages
... We think of these events as disasters, but many species are adapted to them. Although forest fires kill some trees, for example, other trees are spared, and fire can stimulate their seeds to germinate. Secondary succession can also follow human activities like logging and ...
... We think of these events as disasters, but many species are adapted to them. Although forest fires kill some trees, for example, other trees are spared, and fire can stimulate their seeds to germinate. Secondary succession can also follow human activities like logging and ...
Stability
... • Several authors have reviewed the stability of a species (or even a pair of species), which we will not review (too extensive) ...
... • Several authors have reviewed the stability of a species (or even a pair of species), which we will not review (too extensive) ...
Ecological processes regulating geographic distributions of
... expansion of one or both of the species (Bull 1991). Competition can occur directly for space or resources, or indirectly (apparent competition). In resource competition theory, the more similar two species are in their utilization of a limiting resource, the less likely they are to stably coexist ( ...
... expansion of one or both of the species (Bull 1991). Competition can occur directly for space or resources, or indirectly (apparent competition). In resource competition theory, the more similar two species are in their utilization of a limiting resource, the less likely they are to stably coexist ( ...
DOMESTIC CATS AS PREDATORS AND FACTORS IN WINTER
... them with relish. Cats 2 and 3 began to hunt prey, and their mother’s prey increased, in 1967. This expansion in predation multiplied our observations and confirmed our impression that detailed information on predation by each member of the group could be obtained. For one thing, the combined home r ...
... them with relish. Cats 2 and 3 began to hunt prey, and their mother’s prey increased, in 1967. This expansion in predation multiplied our observations and confirmed our impression that detailed information on predation by each member of the group could be obtained. For one thing, the combined home r ...
Consumer Fronts, Global Change, and Runaway Collapse
... by University of Florida - Smathers Library on 11/26/13. For personal use only. ...
... by University of Florida - Smathers Library on 11/26/13. For personal use only. ...
GB NON-NATIVE ORGANISM RISK ASSESSMENT SCHEME
... 15 young/year (Gosling 1981). On average, individuals in introduced populations put on weight more quickly, they reach sexual maturity at a younger age and frequently live at higher population densities than in their native range (Guichón et al. 2003; Bertolino et al. 2012). This may be related to a ...
... 15 young/year (Gosling 1981). On average, individuals in introduced populations put on weight more quickly, they reach sexual maturity at a younger age and frequently live at higher population densities than in their native range (Guichón et al. 2003; Bertolino et al. 2012). This may be related to a ...
25 4. RESEARCH ARTICLE OIL PALM EXPANSION
... variable, depending on the group of organisms under consideration as well as the intensity of land use (Jauker et al. 2009, Sodhi and Ehrlich 2010). However, for species that once lived in a continuous expanse of forest, the general assumption is that they will not survive in these anthropogenic lan ...
... variable, depending on the group of organisms under consideration as well as the intensity of land use (Jauker et al. 2009, Sodhi and Ehrlich 2010). However, for species that once lived in a continuous expanse of forest, the general assumption is that they will not survive in these anthropogenic lan ...
Chapter 10 - Lakeland Regional High School
... • Excessive hunting can also lead to extinction as seen in the 1800s and 1900s when 2 billion passenger pigeons were hunted to extinction. • Thousands of rare species worldwide are harvested and sold for use as pets, houseplants, wood, food, or herbal medicine. • Poaching is is the illegal harvestin ...
... • Excessive hunting can also lead to extinction as seen in the 1800s and 1900s when 2 billion passenger pigeons were hunted to extinction. • Thousands of rare species worldwide are harvested and sold for use as pets, houseplants, wood, food, or herbal medicine. • Poaching is is the illegal harvestin ...
local vs. regional influences on local diversity in
... outcome of community assembly. For example, communities may become less invadable as the number (Case 1991) or connectance (Pimm 1989) of local species increases. The use of comparisons provides an alternative to experimentation in empirical studies of community saturation. An important limitation o ...
... outcome of community assembly. For example, communities may become less invadable as the number (Case 1991) or connectance (Pimm 1989) of local species increases. The use of comparisons provides an alternative to experimentation in empirical studies of community saturation. An important limitation o ...
Tree species Diversity and Regeneration of Tropical Dry Forests in
... mechanisms which permit species to coexist in perennial plant communities. This diversity in seed bank behaviour not only indicates how variation in form, intensity, and seasonal distribution of habitat disturbance facilitates complementary forms of regeneration, but it also provides a basis for man ...
... mechanisms which permit species to coexist in perennial plant communities. This diversity in seed bank behaviour not only indicates how variation in form, intensity, and seasonal distribution of habitat disturbance facilitates complementary forms of regeneration, but it also provides a basis for man ...
Dr Michelle Maloney - Australian Earth Laws Alliance
... acknowledging the rights of nature 4. Build new governance models, so human societies can live within our ecological limits ...
... acknowledging the rights of nature 4. Build new governance models, so human societies can live within our ecological limits ...
Ecology and management of oak woodlands and savannahs
... Dry, low-quality sites are better suited for restoration; historically, they burned more frequently and likely contain many desirable plants within the seedbed. More mesic, productive sites (floodplains, riparian areas, coves and northern slopes) would have burned less frequently and are best left t ...
... Dry, low-quality sites are better suited for restoration; historically, they burned more frequently and likely contain many desirable plants within the seedbed. More mesic, productive sites (floodplains, riparian areas, coves and northern slopes) would have burned less frequently and are best left t ...
symbiosis, lateral function transfer and the (many) saplings of life
... This way of framing the issue allows for inclusion of the effects of LGT while restricting it to a part of natural history that many if not most evolutionary biologists do not focus on. As we shall see, evolutionary biologists who adopt such an account are blackboxing a process that in fact occurs i ...
... This way of framing the issue allows for inclusion of the effects of LGT while restricting it to a part of natural history that many if not most evolutionary biologists do not focus on. As we shall see, evolutionary biologists who adopt such an account are blackboxing a process that in fact occurs i ...
- Wiley Online Library
... rainy season precipitation on juvenile survival, which was consistent with an effect of precipitation on food availability during the breeding season. We used these relationships, and climate projections of significantly warmer and slightly drier winter weather by the year 2100, to project a signifi ...
... rainy season precipitation on juvenile survival, which was consistent with an effect of precipitation on food availability during the breeding season. We used these relationships, and climate projections of significantly warmer and slightly drier winter weather by the year 2100, to project a signifi ...
Predators drive community structure in coral reef fish assemblages
... lobster and fish populations resulted in decreases in herbivores such as urchins and abalone, and a corresponding increase in macroalgal cover (Edgar and Barrett 1999, Shears and Babcock 2003, Barrett et al. 2009). In these cases, there was a strong and direct link between predators, herbivores and ...
... lobster and fish populations resulted in decreases in herbivores such as urchins and abalone, and a corresponding increase in macroalgal cover (Edgar and Barrett 1999, Shears and Babcock 2003, Barrett et al. 2009). In these cases, there was a strong and direct link between predators, herbivores and ...
Non-Consumptive Effects of Spiders and Ants: Does Fear
... During their life time animals have to balance many demands including foraging, migration, courtship and predator avoidance. In doing so, individuals may fail to obtain a suitable food source or mating partner in a short time perspective, but they may succeed during following attempts. However, the ...
... During their life time animals have to balance many demands including foraging, migration, courtship and predator avoidance. In doing so, individuals may fail to obtain a suitable food source or mating partner in a short time perspective, but they may succeed during following attempts. However, the ...
Mortality rates of scleractinian corals before and
... (2) Predators, in particular grazing fish and the sea star Acanthaster planci, were frequently seen to damage living corals. Generally, predation caused damage to only part of a colony, but death of the entire colony sometimes resulted, particularly in small colonies. Scarid grazing most commonly af ...
... (2) Predators, in particular grazing fish and the sea star Acanthaster planci, were frequently seen to damage living corals. Generally, predation caused damage to only part of a colony, but death of the entire colony sometimes resulted, particularly in small colonies. Scarid grazing most commonly af ...
The potential role of ecological corridors for habitat conservation in
... species of plant and animal of conservation value will actually move through them. The second is that investment of limited resources in corridors has a better cost-benefit balance than investment in other conservation activities such as site acquisition, management or restoration. Ecological corrid ...
... species of plant and animal of conservation value will actually move through them. The second is that investment of limited resources in corridors has a better cost-benefit balance than investment in other conservation activities such as site acquisition, management or restoration. Ecological corrid ...
Survival selection on escape performance and its underlying
... instantaneously reduce the fitness of a prey organism to zero. Many studies have indeed demonstrated phenotypic selection imposed by predators on prey morphology, behaviour and physiology (Endler, 1986; Hoekstra et al., 2001; Kingsolver et al., 2001). However, selection imposed by predators will oft ...
... instantaneously reduce the fitness of a prey organism to zero. Many studies have indeed demonstrated phenotypic selection imposed by predators on prey morphology, behaviour and physiology (Endler, 1986; Hoekstra et al., 2001; Kingsolver et al., 2001). However, selection imposed by predators will oft ...
State of the Art Report - 4rd. draft
... infrastructure is a significant problem for landuse planning. It is not surprising therefore that landtake is a fundamental consideration in Environmental Impact Assessment (EIA) studies and forms a baseline for designing mitigation and compensation measures in modern infrastructure projects (OECD, ...
... infrastructure is a significant problem for landuse planning. It is not surprising therefore that landtake is a fundamental consideration in Environmental Impact Assessment (EIA) studies and forms a baseline for designing mitigation and compensation measures in modern infrastructure projects (OECD, ...
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.