Abiotic factors and fish
... • Rivers generally increase in size as one proceeds downstream – Velocity (U) varies with gradient, depth, and substrate texture • Average velocity usually increases downstream! – Gradient decreases, but depth increases and friction decreases Gradient Fish species and numbers are related to these ch ...
... • Rivers generally increase in size as one proceeds downstream – Velocity (U) varies with gradient, depth, and substrate texture • Average velocity usually increases downstream! – Gradient decreases, but depth increases and friction decreases Gradient Fish species and numbers are related to these ch ...
SB4a LEQ1 Relationships Fall 2008
... 1. One species is better suited to the niche and the other will either be pushed out or become extinct. 2. The niche will be divided. 3. The two species will further diverge. ...
... 1. One species is better suited to the niche and the other will either be pushed out or become extinct. 2. The niche will be divided. 3. The two species will further diverge. ...
Population Ecology - El Paso High School
... conditions allow; when conditions worsen, population size plummets. Short life span Reproduce early in life Many offspring/large clutch size Usually small in size Little or no parental care Bacteria, some plants, insects ...
... conditions allow; when conditions worsen, population size plummets. Short life span Reproduce early in life Many offspring/large clutch size Usually small in size Little or no parental care Bacteria, some plants, insects ...
ch08_sec1 printout
... factor in each successive time period. • Exponential growth occurs in nature only when populations have ____________________________ • _______________________________________ • _________________________ • For example, population explosions occur when bacteria or molds grow on a new source of food. ...
... factor in each successive time period. • Exponential growth occurs in nature only when populations have ____________________________ • _______________________________________ • _________________________ • For example, population explosions occur when bacteria or molds grow on a new source of food. ...
Plant traits and biochemical cycling on land
... inform us about their fitness for or their effects on the ecosystems they live in ...
... inform us about their fitness for or their effects on the ecosystems they live in ...
Population Growth and Regulation Ecology Population Size
... • Biotic potential is the maximum rate at which a population could increase. – In ideal conditions, the biotic potential allows the maximum birth rate and minimum death rate. ...
... • Biotic potential is the maximum rate at which a population could increase. – In ideal conditions, the biotic potential allows the maximum birth rate and minimum death rate. ...
File
... Since organisms usually produce more offspring than this limited amount of energy can support, there is competition for access to the energy that is there. Competition results in natural population fluctuations. 6. Members of a population often cooperate to meet basic needs. However, they may also e ...
... Since organisms usually produce more offspring than this limited amount of energy can support, there is competition for access to the energy that is there. Competition results in natural population fluctuations. 6. Members of a population often cooperate to meet basic needs. However, they may also e ...
Life on earth summary
... Algae also has a very short life cycle, so they die quickly and in areas where they have increased significantly in numbers, there will be high levels of decay and decomposition by micro-organisms. The process of decay uses up dissolved oxygen from the water, decreasing the oxygen availability for ...
... Algae also has a very short life cycle, so they die quickly and in areas where they have increased significantly in numbers, there will be high levels of decay and decomposition by micro-organisms. The process of decay uses up dissolved oxygen from the water, decreasing the oxygen availability for ...
MECHANISMS OF MAINTENANCE OF SPECIES DIVERSITY Peter
... Key Words coexistence, competition, predation, niche, spatial and temporal variation. ■ Abstract The focus of most ideas on diversity maintenance is species coexistence, which may be stable or unstable. Stable coexistence can be quantified by the long-term rates at which community members recover fr ...
... Key Words coexistence, competition, predation, niche, spatial and temporal variation. ■ Abstract The focus of most ideas on diversity maintenance is species coexistence, which may be stable or unstable. Stable coexistence can be quantified by the long-term rates at which community members recover fr ...
Life on Earth summary
... Algae also has a very short life cycle, so they die quickly and in areas where they have increased significantly in numbers, there will be high levels of decay and decomposition by micro-organisms. The process of decay uses up dissolved oxygen from the water, decreasing the oxygen availability for ...
... Algae also has a very short life cycle, so they die quickly and in areas where they have increased significantly in numbers, there will be high levels of decay and decomposition by micro-organisms. The process of decay uses up dissolved oxygen from the water, decreasing the oxygen availability for ...
Calcification Energy Budgets Early Life Stages Community
... The majority of calcification responses to OA are negative, with changes in calcification rate ranging from a 99% decline to a 400% increase. This is highly variable between species/genera. Alterations in morphology have been observed in corals10 (Fig. 2) and bivalves11. Metabolic responses have bee ...
... The majority of calcification responses to OA are negative, with changes in calcification rate ranging from a 99% decline to a 400% increase. This is highly variable between species/genera. Alterations in morphology have been observed in corals10 (Fig. 2) and bivalves11. Metabolic responses have bee ...
Section C HL
... Name a factor, other than competition, that controls wild populations. (9) (b) What deduction is it possible to make from each of the following observations? (i) In a particular area the population of a predator did not decline following a big reduction in the population of its main prey. (ii) Morta ...
... Name a factor, other than competition, that controls wild populations. (9) (b) What deduction is it possible to make from each of the following observations? (i) In a particular area the population of a predator did not decline following a big reduction in the population of its main prey. (ii) Morta ...
Woodland Hills - Science 8 - Lesson 15 Guided Notes Answer Key
... -Most populations reach a stable point where births equal deaths. -This equal state is important! For example: If a population is allowed to keep increasing, organisms will run out of food and places to live. -Something in the ecosystem that keeps a population from getting too large is called a limi ...
... -Most populations reach a stable point where births equal deaths. -This equal state is important! For example: If a population is allowed to keep increasing, organisms will run out of food and places to live. -Something in the ecosystem that keeps a population from getting too large is called a limi ...
Interactions Among Living Things Reading Guide
... Biological description of an organism includes: Whether it's a __________________, _____________________, or ______________. Whether it’s a ______________________ or __________________. Type of __________________________________________ it forms. __________________________: organisms’ role in the ec ...
... Biological description of an organism includes: Whether it's a __________________, _____________________, or ______________. Whether it’s a ______________________ or __________________. Type of __________________________________________ it forms. __________________________: organisms’ role in the ec ...
The Lesson of the Kaibab
... Signs that the deer population was out of control began to appear as early as 1920 - the range was beginning to deteriorate rapidly. The Forest Service reduced the number of livestock grazing permits. By 1923, the deer were reported to be on the verge of starvation and the range conditions were desc ...
... Signs that the deer population was out of control began to appear as early as 1920 - the range was beginning to deteriorate rapidly. The Forest Service reduced the number of livestock grazing permits. By 1923, the deer were reported to be on the verge of starvation and the range conditions were desc ...
11 Carrying Capacity - Mr. Smith`s Website
... Field mice may have litters with six or more pups, and they can reproduce every six weeks. It takes only six weeks for a mouse to become sexually mature. In 6 months, a population of 20 mice could become a population of 5120 mice. Mice have been around for millions of years, so why is it that when y ...
... Field mice may have litters with six or more pups, and they can reproduce every six weeks. It takes only six weeks for a mouse to become sexually mature. In 6 months, a population of 20 mice could become a population of 5120 mice. Mice have been around for millions of years, so why is it that when y ...
Natural Selection Example 1
... (PCD) (67% vs 69%). The Light Blue species suffered 88% PCD, greater than any other group. This data contradicts our second hypothesis due to the similar losses from predators despite the camouflage profile favoring the Blue groups. § Due to the contradicting results from the experiment there may be ...
... (PCD) (67% vs 69%). The Light Blue species suffered 88% PCD, greater than any other group. This data contradicts our second hypothesis due to the similar losses from predators despite the camouflage profile favoring the Blue groups. § Due to the contradicting results from the experiment there may be ...
Natural Selection Example 1
... (PCD) (67% vs 69%). The Light Blue species suffered 88% PCD, greater than any other group. This data contradicts our second hypothesis due to the similar losses from predators despite the camouflage profile favoring the Blue groups. § Due to the contradicting results from the experiment there may be ...
... (PCD) (67% vs 69%). The Light Blue species suffered 88% PCD, greater than any other group. This data contradicts our second hypothesis due to the similar losses from predators despite the camouflage profile favoring the Blue groups. § Due to the contradicting results from the experiment there may be ...
File
... Fundamental / The type of niche that an organism will occupy if there is no outside source of competition (1) Realised / The type of niche that an organism will occupy when another species is in competition with it (1) Resource partitioning / A way to divide up resources to ensure two species in com ...
... Fundamental / The type of niche that an organism will occupy if there is no outside source of competition (1) Realised / The type of niche that an organism will occupy when another species is in competition with it (1) Resource partitioning / A way to divide up resources to ensure two species in com ...
ecology ppt
... dependent and independent factors. Briefly explain the difference between the two. 2. What are examples of density dependent factors? 3. What are examples of density independent factors? ...
... dependent and independent factors. Briefly explain the difference between the two. 2. What are examples of density dependent factors? 3. What are examples of density independent factors? ...
File
... Groups of populations that interact together. (Only living things!) Individuals of the same species living together that can breed. A single living thing. A living thing. A non-living thing. Never was alive. When species live together without intentionally killing each other. Two species help each o ...
... Groups of populations that interact together. (Only living things!) Individuals of the same species living together that can breed. A single living thing. A living thing. A non-living thing. Never was alive. When species live together without intentionally killing each other. Two species help each o ...
Educational Simulation of Complex Ecosystems in the World
... where [Yi] is the vector of populations of the species preyed upon by the consumer, [ni] is the corresponding vector of appetence coefficients, [Z i] is the vector of populations of the species preying upon the consumer, [pi] is the corresponding vector of coefficients, and m is the coefficient of i ...
... where [Yi] is the vector of populations of the species preyed upon by the consumer, [ni] is the corresponding vector of appetence coefficients, [Z i] is the vector of populations of the species preying upon the consumer, [pi] is the corresponding vector of coefficients, and m is the coefficient of i ...
Practice Test One - Sara Parr Syswerda
... in the absence of predation, prey grow exponentially in the absence of predation, prey grow to carrying capacity in the absence of prey, predators decline exponentially predators encounter prey randomly (i.e., well-mixed environment) ...
... in the absence of predation, prey grow exponentially in the absence of predation, prey grow to carrying capacity in the absence of prey, predators decline exponentially predators encounter prey randomly (i.e., well-mixed environment) ...