Q2 Ecology PowerPoint
... different beak sizes in seed eating finches reduces competition between species ...
... different beak sizes in seed eating finches reduces competition between species ...
Lecture 15
... Island Effects vs. Mainland Area Effects Mainland shows species/ area relationship, but weaker than islands Suggests that processes specific to islands are important colonization extinction Mainland dispersal is so high that area doesn’t affect colonization much ...
... Island Effects vs. Mainland Area Effects Mainland shows species/ area relationship, but weaker than islands Suggests that processes specific to islands are important colonization extinction Mainland dispersal is so high that area doesn’t affect colonization much ...
Chapter 12 APES
... whaling be resumed for species with populations of 1 million or more? – No. The hunting of whales is no longer necessary and simply encourages disrespect for these intelligent giants. – Yes. Some whale species have recovered and products from them are valuable resources for humans. ...
... whaling be resumed for species with populations of 1 million or more? – No. The hunting of whales is no longer necessary and simply encourages disrespect for these intelligent giants. – Yes. Some whale species have recovered and products from them are valuable resources for humans. ...
paper - institute for theoretical physics cologne
... (1994, Theor. Popul. Biol. 45, 227–276). Here we review and generalize this analysis, beyond the ‘‘mean-field’’-like approximation of the competition matrix used in previous works, and extend it to structured food webs. In all cases analysed, we obtain qualitatively similar relations between biodive ...
... (1994, Theor. Popul. Biol. 45, 227–276). Here we review and generalize this analysis, beyond the ‘‘mean-field’’-like approximation of the competition matrix used in previous works, and extend it to structured food webs. In all cases analysed, we obtain qualitatively similar relations between biodive ...
Ground Rules, exams, etc. (no “make up” exams) Text: read
... Real communities are far from random in construction, but must obey various constraints. Can be no more than 5-7 trophic levels, food chain loops are disallowed, must be at least one producer in every ecosystem, etc. Astronomically large numbers of random systems : for only 40 species, there are 10 ...
... Real communities are far from random in construction, but must obey various constraints. Can be no more than 5-7 trophic levels, food chain loops are disallowed, must be at least one producer in every ecosystem, etc. Astronomically large numbers of random systems : for only 40 species, there are 10 ...
Evolutionary history in a tiny package
... resulting in a tendency for these species to evolve smaller body sizes. However, on islands where species face competition for resources and predation, individuals with a genetic tendency to divert energy from reproduction and put it towards body growth may be favored. On the other hand, carnivores ...
... resulting in a tendency for these species to evolve smaller body sizes. However, on islands where species face competition for resources and predation, individuals with a genetic tendency to divert energy from reproduction and put it towards body growth may be favored. On the other hand, carnivores ...
Ecology Word Search
... 1. This is a type of organism that goes through photosynthesis to produce it’s own source of energy. ...
... 1. This is a type of organism that goes through photosynthesis to produce it’s own source of energy. ...
an opportunity to initiate watershed ecological risk assessment
... Two hundred and fifty Galaxias and 110 Sandelia individuals have been successfully sequenced and data analysis is in progress. Eight historically isolated lineages of the Cape galaxias (Galaxias zebratus) were discovered from the study area. This indicates that the Breede and its associated river sy ...
... Two hundred and fifty Galaxias and 110 Sandelia individuals have been successfully sequenced and data analysis is in progress. Eight historically isolated lineages of the Cape galaxias (Galaxias zebratus) were discovered from the study area. This indicates that the Breede and its associated river sy ...
AP Chap 53 Population Ecology
... weeds. Are these species more likely to be K-selected or r-selected species? ...
... weeds. Are these species more likely to be K-selected or r-selected species? ...
Chapter 17 Test Study Guide ( )
... 7. The symbiotic relationship in which one organism benefits and the other neither benefits nor suffers harm is called ______. 8. The struggle among organisms for the same limited natural resources is called ____________________. 9. A(n) _______ describes the habitat, feeding habits, other aspects o ...
... 7. The symbiotic relationship in which one organism benefits and the other neither benefits nor suffers harm is called ______. 8. The struggle among organisms for the same limited natural resources is called ____________________. 9. A(n) _______ describes the habitat, feeding habits, other aspects o ...
Succession Notes
... the process of succession. Lichens and moss are the most common. climax community - an ecological community that has reached the final stage of ecological succession. climax communities can be different for each type of ecosystem primary succession - occurs on an area of newly exposed rock, sand, la ...
... the process of succession. Lichens and moss are the most common. climax community - an ecological community that has reached the final stage of ecological succession. climax communities can be different for each type of ecosystem primary succession - occurs on an area of newly exposed rock, sand, la ...
Animal defenses against predation/predator-prey
... interaction. He thought that both predator and prey would persist, that the spatial complexity would prevent the predator from killing prey mites on all the oranges they occupied at the same time. This failure did not deter him. He created a yet more complex system. The universe consisted of >200 or ...
... interaction. He thought that both predator and prey would persist, that the spatial complexity would prevent the predator from killing prey mites on all the oranges they occupied at the same time. This failure did not deter him. He created a yet more complex system. The universe consisted of >200 or ...
Now let`s look more formally at how the theoretical regression model
... • Normal distributions are symmetric and since the error term subtracts the mean, the errors must be centered at zero, they have a mean of zero. • Since only the mean changes, the standard deviation of each of these normal distributions is the same and thus the standard deviation of the error term m ...
... • Normal distributions are symmetric and since the error term subtracts the mean, the errors must be centered at zero, they have a mean of zero. • Since only the mean changes, the standard deviation of each of these normal distributions is the same and thus the standard deviation of the error term m ...
ADAPTATIONS - Petal School District
... 2. A snake can kill and eat a frog because its body chemistry can produce poison. The production of poison is a functional adaptation because it helps the snake obtain food and therefore survive. 3. Photosynthesis is a functional adaptation because it is the chemical means by which the plant produce ...
... 2. A snake can kill and eat a frog because its body chemistry can produce poison. The production of poison is a functional adaptation because it helps the snake obtain food and therefore survive. 3. Photosynthesis is a functional adaptation because it is the chemical means by which the plant produce ...
1091-Lec10(TrapA)
... What are the issues about using presence/absence/abundance data to identify critical habitat? What data is needed to determine whether a habitat acts as a source or a sink? ...
... What are the issues about using presence/absence/abundance data to identify critical habitat? What data is needed to determine whether a habitat acts as a source or a sink? ...
Metapopulations II
... •If migration among patches does not overcome genetic drift •If colonization rare and from only one or very few individuals (founder effect) Metapopulation structure does not guarantee genetic diversity! ...
... •If migration among patches does not overcome genetic drift •If colonization rare and from only one or very few individuals (founder effect) Metapopulation structure does not guarantee genetic diversity! ...
3.1 Recovery and Renewal
... sand dunes) Plants and plant-like species that are part of primary succession are often called pioneer species (lichens and grasses) ...
... sand dunes) Plants and plant-like species that are part of primary succession are often called pioneer species (lichens and grasses) ...
Redman & Scriber - OECOLOGIA 125: (2) 218
... for quaking aspen, Populus tremuloides … Females … oviposit on newly expanded leaves during the first few weeks of June, and larvae grow throughout the summer, pupating in mid- to late August. Quaking aspen, which supports a large number of herbivores, is defended primarily by the phenolic glycoside ...
... for quaking aspen, Populus tremuloides … Females … oviposit on newly expanded leaves during the first few weeks of June, and larvae grow throughout the summer, pupating in mid- to late August. Quaking aspen, which supports a large number of herbivores, is defended primarily by the phenolic glycoside ...
Notes - Being an Environmental Scientist
... • Parasitism where host dies is devastating to both the parasite and the host populations. • Important host survives and thrives long enough for the parasite to reproduce and spread. ...
... • Parasitism where host dies is devastating to both the parasite and the host populations. • Important host survives and thrives long enough for the parasite to reproduce and spread. ...
Grade 12 - Thutong
... Grade 12: DNA, genetics and genetic engineering In grade 12, we examine life at the molecular level, and focus on DNA and its role in the cell and in heredity. DNA forms part of the chromosomes in the nuclei of cells and it contains the genetic code that provides information about what a living orga ...
... Grade 12: DNA, genetics and genetic engineering In grade 12, we examine life at the molecular level, and focus on DNA and its role in the cell and in heredity. DNA forms part of the chromosomes in the nuclei of cells and it contains the genetic code that provides information about what a living orga ...
A look at populations (5 points) Part 1: In 1911, 25 reindeer, 4 males
... Reindeer and in which year did it occur? 5. Explain why the population could survive with starting numbers of 21 females but only 4 males. 6. Explain why before 1930, even without predation the population size decreased for a short period. 7. St. Paul island is 200 miles from the mainland. What kind ...
... Reindeer and in which year did it occur? 5. Explain why the population could survive with starting numbers of 21 females but only 4 males. 6. Explain why before 1930, even without predation the population size decreased for a short period. 7. St. Paul island is 200 miles from the mainland. What kind ...
Behavioral ecology and evolution
... occurs among groups of individuals living in the same place – Physical isolation is not necessary. Instead there is some form of ecological isolation between the groups. – Not many examples. Sympatric speciation is a debated ...
... occurs among groups of individuals living in the same place – Physical isolation is not necessary. Instead there is some form of ecological isolation between the groups. – Not many examples. Sympatric speciation is a debated ...
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.