HighFour Biology Round 4 Category C: Grades 9 – 10 Tuesday
... skeletal structures secreted primarily by corals. Some coral reefs also exist in cold, deep waters. ...
... skeletal structures secreted primarily by corals. Some coral reefs also exist in cold, deep waters. ...
The population ecology of contemporary adaptations
... and Kinnison (1999) demonstrated that, if a response to sustained directional selection is observable during the lifetime of an investigator, then the rate of evolution is orders of magnitude faster than what is considered rapid evolution in the fossil record. We also recognize that there is evidenc ...
... and Kinnison (1999) demonstrated that, if a response to sustained directional selection is observable during the lifetime of an investigator, then the rate of evolution is orders of magnitude faster than what is considered rapid evolution in the fossil record. We also recognize that there is evidenc ...
Asian Carp Invasion Lesson Plan
... feeding on juvenile or smaller adult Asian carp. Largemouth bass have often been observed feeding on small juvenile Asian carp, and many other native predators probably also feed on them before they grow too large. However, Asian carp produce many offspring which grow quickly and, if conditions are ...
... feeding on juvenile or smaller adult Asian carp. Largemouth bass have often been observed feeding on small juvenile Asian carp, and many other native predators probably also feed on them before they grow too large. However, Asian carp produce many offspring which grow quickly and, if conditions are ...
Predation in bird populations
... when prey are the most popular prey of a predator or linear trophic chains operate; when there is evolutionary lag such as introduced predators and naïve prey populations; and when there are several predator species hunting the same prey in diverse ways. The presence of predators may or may not affe ...
... when prey are the most popular prey of a predator or linear trophic chains operate; when there is evolutionary lag such as introduced predators and naïve prey populations; and when there are several predator species hunting the same prey in diverse ways. The presence of predators may or may not affe ...
Halting the loss of biodiversity by 2010
... inform about the progress towards the 2010. Hence large efforts are presently undertaken by many national and international organisations to develop and coordinate work on 2010 relevant biodiversity indicators. The Convention on Biological Diversity is now the overall global organisation in this dev ...
... inform about the progress towards the 2010. Hence large efforts are presently undertaken by many national and international organisations to develop and coordinate work on 2010 relevant biodiversity indicators. The Convention on Biological Diversity is now the overall global organisation in this dev ...
A Community Matrix Analysis of Heliconia Insect Communities
... be expressed as the single-matrix equation K = AN*, where K is the column vector of carrying capacities, N* is the column vector of equilibrium densities of species, and A is the square matrix of interaction coefficients (a's) known as the community matrix (Levins 1968). While the a's themselves giv ...
... be expressed as the single-matrix equation K = AN*, where K is the column vector of carrying capacities, N* is the column vector of equilibrium densities of species, and A is the square matrix of interaction coefficients (a's) known as the community matrix (Levins 1968). While the a's themselves giv ...
species richness, latitude, and scale-sensitivity
... signs must be employed to adjust for differences in the spatial scale of sampling. In an attempt to rectify this situation, Lyons and Willig (1999) developed a model that united aspects of theory relating species richness to latitude, area, and their interaction (i.e., scale-dependence). The model a ...
... signs must be employed to adjust for differences in the spatial scale of sampling. In an attempt to rectify this situation, Lyons and Willig (1999) developed a model that united aspects of theory relating species richness to latitude, area, and their interaction (i.e., scale-dependence). The model a ...
Species Invasions and the Relationships between Species Diversity
... has renewed interest within ecology in the relationship between the number or diversity of species in a community and the extent to which that community maintains its functioning. Indeed, experimental tests of relationships between diversity and ecosystem processes such as productivity, stability, a ...
... has renewed interest within ecology in the relationship between the number or diversity of species in a community and the extent to which that community maintains its functioning. Indeed, experimental tests of relationships between diversity and ecosystem processes such as productivity, stability, a ...
relationship between escape speed and flight distance in a
... predator rather than a particular known predator) to elicit escape behavior. Each spider was placed in the spider chamber for 10 min. to acclimate. The model predator was concealed by a black plastic curtain at the end of the runway, opposite the spider chamber. After 10 min., the model predator was ...
... predator rather than a particular known predator) to elicit escape behavior. Each spider was placed in the spider chamber for 10 min. to acclimate. The model predator was concealed by a black plastic curtain at the end of the runway, opposite the spider chamber. After 10 min., the model predator was ...
internal parasites of lizards from taiwan
... microscope the esophagus, stomach, and small and large intestines for helminths. The lungs were not examined. Some of the donated lizards were already dissected, and sometimes incomplete, in which case we examined them as far as possible. We cleared the helminths in a drop of undiluted glycerol on a ...
... microscope the esophagus, stomach, and small and large intestines for helminths. The lungs were not examined. Some of the donated lizards were already dissected, and sometimes incomplete, in which case we examined them as far as possible. We cleared the helminths in a drop of undiluted glycerol on a ...
Progress toward understanding the ecological impacts of nonnative
... species. The logical implications of this definition are that (1) every nonnative species has an impact simply by becoming integrated into the system, (2) such impacts may be positive or negative and vary in magnitude on a continuous scale, and (3) impacts can be compared through time and across spac ...
... species. The logical implications of this definition are that (1) every nonnative species has an impact simply by becoming integrated into the system, (2) such impacts may be positive or negative and vary in magnitude on a continuous scale, and (3) impacts can be compared through time and across spac ...
Avoiding Predation
... "Well, in our country," said Alice, still panting a little, "you'd generally get to somewhere else — if you run very fast for a long time, as we've been doing." "A slow sort of country!" said the Queen. "Now, here, you see, it takes all the running you can do, to keep in the same place. If you want ...
... "Well, in our country," said Alice, still panting a little, "you'd generally get to somewhere else — if you run very fast for a long time, as we've been doing." "A slow sort of country!" said the Queen. "Now, here, you see, it takes all the running you can do, to keep in the same place. If you want ...
Field Verification of Predator Attraction to Minnow Alarm Substance
... and 11 minnows (mean ± SE = 6.5 ± 0.17 cm, N = 11) to make the skin extract solutions. We killed each fish by a blow to the head, then carefully filleted the skin from each flank. Skin fillets were measured, then placed in chilled dechlorinated tap water. The total area of skin collected was 68.44 c ...
... and 11 minnows (mean ± SE = 6.5 ± 0.17 cm, N = 11) to make the skin extract solutions. We killed each fish by a blow to the head, then carefully filleted the skin from each flank. Skin fillets were measured, then placed in chilled dechlorinated tap water. The total area of skin collected was 68.44 c ...
D 56. Shachak et al. 2008. Woody sp.as landscape modulators
... the distribution of resources in space and time and consequently the distribution and abundance of organisms. In this article, we aim to develop a conceptual framework to better understand biodiversity processes in the context of environmental modulation induced by woody plants. Specifically, we ask ...
... the distribution of resources in space and time and consequently the distribution and abundance of organisms. In this article, we aim to develop a conceptual framework to better understand biodiversity processes in the context of environmental modulation induced by woody plants. Specifically, we ask ...
An allometric approach to quantify the extinction vulnerability of
... non-carnivorous birds. Carnivorous mammals were found to have higher extinction risks than non- carnivores, while birds were more prone to extinction than mammals. These results are explained by the allometric relationships, predicting the vulnerable species groups to have lower intrinsic populati ...
... non-carnivorous birds. Carnivorous mammals were found to have higher extinction risks than non- carnivores, while birds were more prone to extinction than mammals. These results are explained by the allometric relationships, predicting the vulnerable species groups to have lower intrinsic populati ...
Freshwater Ecosystems and Biodiversity
... to provide a systematic approach to understanding how environmental factors affect biota. We first describe each factor, and then return to these factors when examining the major types of freshwater ecosystem. Although each factor is presented separately, interactions among Another useful biodiversi ...
... to provide a systematic approach to understanding how environmental factors affect biota. We first describe each factor, and then return to these factors when examining the major types of freshwater ecosystem. Although each factor is presented separately, interactions among Another useful biodiversi ...
Entry Level Math - algebra vs modeling
... slightly more complicated pattern is one in which the differences between successive terms is not constant, but follows an arithmetic growth pattern. That is what we saw in the perfect square example, where the differences are successive odd integers. The solution to this kind of difference equation ...
... slightly more complicated pattern is one in which the differences between successive terms is not constant, but follows an arithmetic growth pattern. That is what we saw in the perfect square example, where the differences are successive odd integers. The solution to this kind of difference equation ...
Patterns of morphology and resource use in North American desert
... ing the relative importance of predation and harvest efficiency in shaping characteristics of heteromyid communities, although authors often invoke one or the other factor exclusively to explain microhabitat preferences or ...
... ing the relative importance of predation and harvest efficiency in shaping characteristics of heteromyid communities, although authors often invoke one or the other factor exclusively to explain microhabitat preferences or ...
Reciprocal trophic niche shifts in native and invasive fish: salmonids
... constraints, this was the only fishing method used in Toro Lake. This combination of approaches secured samples including a broad range of body sizes of each species, allowing an analysis of ontogenetic, interspecific and inter-lake variation in TN. Correa & Hendry (2012) calculated and analysed mul ...
... constraints, this was the only fishing method used in Toro Lake. This combination of approaches secured samples including a broad range of body sizes of each species, allowing an analysis of ontogenetic, interspecific and inter-lake variation in TN. Correa & Hendry (2012) calculated and analysed mul ...
ABS 415 Help Education Expert/abs415helpdotcom
... BIO 315 Week 5 Learning Team Exercises (UOP) • Case Study Review and Discussion Complete the following: Read the field study in Ch. 20 of Elements of Ecology and discuss the questions at the end. Discuss any concept that a team member is having a difficult time understanding. Examine the importance ...
... BIO 315 Week 5 Learning Team Exercises (UOP) • Case Study Review and Discussion Complete the following: Read the field study in Ch. 20 of Elements of Ecology and discuss the questions at the end. Discuss any concept that a team member is having a difficult time understanding. Examine the importance ...
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.