American Mink (Mustela vison) and its impact on native species in
... in terms of foraging ability, thus limiting its competitive efficiency (Bryce et al. 2002). In its native range of North America, the Grey competes with multiple species of squirrel. The Red only competed intraspecifically, and when presented with another betteradapted species, it was unable to comp ...
... in terms of foraging ability, thus limiting its competitive efficiency (Bryce et al. 2002). In its native range of North America, the Grey competes with multiple species of squirrel. The Red only competed intraspecifically, and when presented with another betteradapted species, it was unable to comp ...
The evolution and functional morphology of trap-jaw
... "snapping ants" (for example the genera Mystrium and Plectroctena), which also have power-amplified mandibles but shut their widely set mandibles from a closed position, snapping them past each other (MOFFETT 1986a, GRONENBERG & al. 1998, DEJEAN & al. 2002). We also omit discussion of ants with line ...
... "snapping ants" (for example the genera Mystrium and Plectroctena), which also have power-amplified mandibles but shut their widely set mandibles from a closed position, snapping them past each other (MOFFETT 1986a, GRONENBERG & al. 1998, DEJEAN & al. 2002). We also omit discussion of ants with line ...
Heart Rate in Spiders - University of Missouri
... the spitting spiders deviate significantly from the regression shown in Fig. 2. These primitive hunters and weavers weigh as much as jumping spiders, yet their resting heart rates are as low as a tarantula's. We suggest that this is an energy-conserving adaptation of spiders that invest little effor ...
... the spitting spiders deviate significantly from the regression shown in Fig. 2. These primitive hunters and weavers weigh as much as jumping spiders, yet their resting heart rates are as low as a tarantula's. We suggest that this is an energy-conserving adaptation of spiders that invest little effor ...
Arthropods
... Population: All individuals of a specific species within a community. Species: Organisms which share characteristics and can breed together. ...
... Population: All individuals of a specific species within a community. Species: Organisms which share characteristics and can breed together. ...
Identification of high energy gamma
... confidently agree that they will be detected, or for some others, the number of their members may be low enough such that a detection of few of its individuals would be needed to claim a great significance. In this situation, we would choose a relatively large Pi, so as to make easier for the test t ...
... confidently agree that they will be detected, or for some others, the number of their members may be low enough such that a detection of few of its individuals would be needed to claim a great significance. In this situation, we would choose a relatively large Pi, so as to make easier for the test t ...
Quality and quantity of particulate organic matter and nutrition of
... human and industrial activities, resulting in generation of over 2485 million litres of wastewater per day and exerting enormous pressure on the adjacent marine environment, including harbour waters. Nutrient concentrations, especially nitrate, have increased gradually over the years with a simultan ...
... human and industrial activities, resulting in generation of over 2485 million litres of wastewater per day and exerting enormous pressure on the adjacent marine environment, including harbour waters. Nutrient concentrations, especially nitrate, have increased gradually over the years with a simultan ...
Carpenter, JH. Observations on the Biology and Behavior of
... Cave organisms, I found that both these species prey on a variety of animals. Thus, a second goal of the current study was to observe interactions between these two potential predators and A. stygobita. ...
... Cave organisms, I found that both these species prey on a variety of animals. Thus, a second goal of the current study was to observe interactions between these two potential predators and A. stygobita. ...
Aggregation in non
... number of bark beetles already present on the host tree, but also by the choices made by other host-searching bark beetles, and by their number – the current population density (Alcock, 1982). The success of an individual thus not only depends on the strategy it employs, but also on the strategies t ...
... number of bark beetles already present on the host tree, but also by the choices made by other host-searching bark beetles, and by their number – the current population density (Alcock, 1982). The success of an individual thus not only depends on the strategy it employs, but also on the strategies t ...
Andrews et al. 2006_FHWA_HERP SYNTHESIS_update010908
... effects of roads and vehicles on amphibians and reptiles (herpetofauna). Roads are the ultimate manifestation of urbanization, providing an essential connectivity within and between rural and heavily populated areas. However, the continual expansion of this infrastructure is not without ecological c ...
... effects of roads and vehicles on amphibians and reptiles (herpetofauna). Roads are the ultimate manifestation of urbanization, providing an essential connectivity within and between rural and heavily populated areas. However, the continual expansion of this infrastructure is not without ecological c ...
population
... favored in dependable environments, where adults are more likely to survive to breed again and competition for resources is intense. – In such environments, a few, well-provisioned offspring have a better chance of surviving to reproductive age. • Oak trees and sea urchins are intermediate between t ...
... favored in dependable environments, where adults are more likely to survive to breed again and competition for resources is intense. – In such environments, a few, well-provisioned offspring have a better chance of surviving to reproductive age. • Oak trees and sea urchins are intermediate between t ...
Sander vitreus
... Walleye is a large member of the Percidae family that feeds on smaller fishes. It is native to the freshwaters of North America east of the Continental divide; in British Columbia it is only native in the northeast part of the province. Walleye are found in southern British Columbia in the Columbia ...
... Walleye is a large member of the Percidae family that feeds on smaller fishes. It is native to the freshwaters of North America east of the Continental divide; in British Columbia it is only native in the northeast part of the province. Walleye are found in southern British Columbia in the Columbia ...
september 24 concurrent sessions
... How “good” should a stand be to be worthy of retention? This will of course depend on the late-successional value of an area relative to the remainder of the property. The LateSuccessional Index being developed by the Manomet Center for Conservation Sciences may serve as a valuable tool to help with ...
... How “good” should a stand be to be worthy of retention? This will of course depend on the late-successional value of an area relative to the remainder of the property. The LateSuccessional Index being developed by the Manomet Center for Conservation Sciences may serve as a valuable tool to help with ...
The Physiology of Life History Trade
... An important result of these studies is that, for a variety of reasons, a positive correlation can exist between traits that are linked in a functional trade-off. For example, once more than two traits are involved in a trade-off (see Figure 1H), positive correlations can occur between subsets of th ...
... An important result of these studies is that, for a variety of reasons, a positive correlation can exist between traits that are linked in a functional trade-off. For example, once more than two traits are involved in a trade-off (see Figure 1H), positive correlations can occur between subsets of th ...
The Dynamics of Temperate Forest Fragmentation
... Simberloff and Abele (1976) rebutted the assertions by claiming that the application of island biogeography to reserve design was premature and that the species-area relationship (SAR) is actually neutral in deciding between a single large and several small reserves. In homogenous habitat, a large ...
... Simberloff and Abele (1976) rebutted the assertions by claiming that the application of island biogeography to reserve design was premature and that the species-area relationship (SAR) is actually neutral in deciding between a single large and several small reserves. In homogenous habitat, a large ...
Ecosystem perspective on changes and anomalies
... continental precipitation variability, and the GSL deep water salinity and Slope Labrador Current volume transport as indicators of the influence of large-scale atmospheric systems on slope water characteristics along the northwest Atlantic shelf (Table 2) (see Greene et al. 2013). Physical data col ...
... continental precipitation variability, and the GSL deep water salinity and Slope Labrador Current volume transport as indicators of the influence of large-scale atmospheric systems on slope water characteristics along the northwest Atlantic shelf (Table 2) (see Greene et al. 2013). Physical data col ...
Battle of the barnacle newcomers: niche compression in invading
... settled on other living barnacles. After manipulation ceased, the cover of C. proteus increased opportunistically as the balanoid died and space became available. The cover of B. reticulatus on control plates also decreased over the course of this experiment, while the cover of C. proteus on these p ...
... settled on other living barnacles. After manipulation ceased, the cover of C. proteus increased opportunistically as the balanoid died and space became available. The cover of B. reticulatus on control plates also decreased over the course of this experiment, while the cover of C. proteus on these p ...
Prey consumption of Steller sea lions Eumetopias
... structure was the same in the 1990s as it was in the 1970s and that population structure was the same in all regions of Alaska. Unfortunately, there are very few data available with which to determine the relationship between the structure and the rate of change in size of a population of Steller se ...
... structure was the same in the 1990s as it was in the 1970s and that population structure was the same in all regions of Alaska. Unfortunately, there are very few data available with which to determine the relationship between the structure and the rate of change in size of a population of Steller se ...
ppt
... Origins & Maintenance of Diversity Hutchinson (1959, 1961) criticized the very restrictive models that were being used to attempt to “explain” diversity The models (Lotka-Volterra-style) assumed a spatially & temporally homogeneous habitat, populations at equilibrium, a 2-tiered trophic structure, ...
... Origins & Maintenance of Diversity Hutchinson (1959, 1961) criticized the very restrictive models that were being used to attempt to “explain” diversity The models (Lotka-Volterra-style) assumed a spatially & temporally homogeneous habitat, populations at equilibrium, a 2-tiered trophic structure, ...
113 - UConn
... of land (Rosenzweig 1995). Consequently it is difficult to disentangle areal effects from other geographic, historical, or ecological phenomena associated with land-ocean interfaces. Finally, almost all studies of latitudinal gradients fail to take into account the spatially autocorrelated nature of ...
... of land (Rosenzweig 1995). Consequently it is difficult to disentangle areal effects from other geographic, historical, or ecological phenomena associated with land-ocean interfaces. Finally, almost all studies of latitudinal gradients fail to take into account the spatially autocorrelated nature of ...
Molluscan Studies - Oklahoma Biological Survey
... live plants at the nursery. Changing the diet revealed growth plasticity. The addition of live plant material reversed the previously stunted growth on a litter-only diet, and the stunted snails caught up in size with non-stunted snails. Under conditions of changing food resources, growth plasticity ...
... live plants at the nursery. Changing the diet revealed growth plasticity. The addition of live plant material reversed the previously stunted growth on a litter-only diet, and the stunted snails caught up in size with non-stunted snails. Under conditions of changing food resources, growth plasticity ...
Tropical tadpole assemblages: which factors affect their structure
... richness may present different species composition (e.g. high ß-diversity) (Parris & MacCarthy 1999). Pond habitats are relatively well known and differ from streams mainly to their unpredictability. Characteristics as water temperature, depth, dissolved oxygen, conductivity and presence of vegetati ...
... richness may present different species composition (e.g. high ß-diversity) (Parris & MacCarthy 1999). Pond habitats are relatively well known and differ from streams mainly to their unpredictability. Characteristics as water temperature, depth, dissolved oxygen, conductivity and presence of vegetati ...
Appendix E - Biodiversity Offsets Strategy
... Groote Eylandt, and the other islands in the archipelago, have significant ecological value because the terrestrial fauna species present on the island are relatively protected from key threatening processes (such as Cane Toads) that exist on the mainland. There is also very little development on Gr ...
... Groote Eylandt, and the other islands in the archipelago, have significant ecological value because the terrestrial fauna species present on the island are relatively protected from key threatening processes (such as Cane Toads) that exist on the mainland. There is also very little development on Gr ...
Inter- and intraspecific parasitism
... Rp = (λ*ƒa*La) * (β*N*ƒi*Li ) Hence, disease control measures are usually aimed directly at reducing the numbers of vectors, and only indirectly at the parasite. This reduces the likelihood that the final host (e.g. man) will get infected, so less direct treatments of the parasite in the final host ...
... Rp = (λ*ƒa*La) * (β*N*ƒi*Li ) Hence, disease control measures are usually aimed directly at reducing the numbers of vectors, and only indirectly at the parasite. This reduces the likelihood that the final host (e.g. man) will get infected, so less direct treatments of the parasite in the final host ...
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.