Ecology notes
... Usually takes hundreds or thousands of years. For example, new volcanic islands or rubble left by a retreating glacier. Often the only life-forms initially present are autotrophic bacteria. Lichens and mosses are commonly the first large photosynthesizers to colonize the area. Soil develops grad ...
... Usually takes hundreds or thousands of years. For example, new volcanic islands or rubble left by a retreating glacier. Often the only life-forms initially present are autotrophic bacteria. Lichens and mosses are commonly the first large photosynthesizers to colonize the area. Soil develops grad ...
Document
... history of humans. 4. What are survival and reproduction considered to be “conflicting demands?” 5. Sketch an exponential growth curve. Describe at least one situation in which exponential growth could occur. 6. Sketch a logistic growth curve and label the carrying capacity, the inflection point, th ...
... history of humans. 4. What are survival and reproduction considered to be “conflicting demands?” 5. Sketch an exponential growth curve. Describe at least one situation in which exponential growth could occur. 6. Sketch a logistic growth curve and label the carrying capacity, the inflection point, th ...
Populations - Cloudfront.net
... Ecosystem diversity- variety of habitats, communities, and ecological processes in the living world Species diversity- the number of different species Genetic diversity- sum total of all the different forms of genetic information carried by all organisms living on ...
... Ecosystem diversity- variety of habitats, communities, and ecological processes in the living world Species diversity- the number of different species Genetic diversity- sum total of all the different forms of genetic information carried by all organisms living on ...
1 Community Biological communities
... – e.g. Paramecium compete for food – the 2 species consume shared resources – The 2 species don’t need to see each other Interference competition – e.g. barnacles compete for space – the 2 species fight over resources (space) – there are face-to-face confrontations ...
... – e.g. Paramecium compete for food – the 2 species consume shared resources – The 2 species don’t need to see each other Interference competition – e.g. barnacles compete for space – the 2 species fight over resources (space) – there are face-to-face confrontations ...
Essentials of Biology Sylvia S. Mader
... – Exponential growth has a J-shape characteristic of a rapidly growing population. – Logistic growth has an S-shape showing a stabilization of the population size. ...
... – Exponential growth has a J-shape characteristic of a rapidly growing population. – Logistic growth has an S-shape showing a stabilization of the population size. ...
Essentials of Biology Sylvia S. Mader
... – Exponential growth has a J-shape characteristic of a rapidly growing population. – Logistic growth has an S-shape showing a stabilization of the population size. ...
... – Exponential growth has a J-shape characteristic of a rapidly growing population. – Logistic growth has an S-shape showing a stabilization of the population size. ...
a comparison of the abiotic characteristics of aquatic
... In animal populations, food supply seems to be the major factor determining the population limit or `carrying capacity’ of a particular ecosystem, whereas for plants the availability of water and light are usually the main factors determining population sizes. When a species first arrives in an ecos ...
... In animal populations, food supply seems to be the major factor determining the population limit or `carrying capacity’ of a particular ecosystem, whereas for plants the availability of water and light are usually the main factors determining population sizes. When a species first arrives in an ecos ...
A-level Environmental Science Mark scheme Unit 3 - The
... amendments made at the standardisation meeting attended by all examiners and is the scheme which was used by them in this examination. The standardisation meeting ensures that the mark scheme covers the candidates’ responses to questions and that every examiner understands and applies it in the same ...
... amendments made at the standardisation meeting attended by all examiners and is the scheme which was used by them in this examination. The standardisation meeting ensures that the mark scheme covers the candidates’ responses to questions and that every examiner understands and applies it in the same ...
BIO 150
... show how it predicts the optimal load size (worms/trip) for a bird. How does increasing the distance between the nest and the patch change the prediction, all else being equal? What kind of experiment could test this model? Kacelnik did a very elegant test of this model, and found striking concordan ...
... show how it predicts the optimal load size (worms/trip) for a bird. How does increasing the distance between the nest and the patch change the prediction, all else being equal? What kind of experiment could test this model? Kacelnik did a very elegant test of this model, and found striking concordan ...
A Bug`s Life: Competition Among Species Towards
... the sustainable capacity of the hive itself. In this light, she dare to keep control on new births, thus making workers uninterested in reproduction on their own, by secreting a chemical essence, the pheromone, which is then spread from body to body amongst the workers, starting with those being ass ...
... the sustainable capacity of the hive itself. In this light, she dare to keep control on new births, thus making workers uninterested in reproduction on their own, by secreting a chemical essence, the pheromone, which is then spread from body to body amongst the workers, starting with those being ass ...
Kelp Forests
... -Tidal currents can be very strong -Water column is generally mixed; nutrients are also brought in by rivers -Waters over the continental shelf are highly productive so there is more food for the benthos. -There is sufficient light for plants ...
... -Tidal currents can be very strong -Water column is generally mixed; nutrients are also brought in by rivers -Waters over the continental shelf are highly productive so there is more food for the benthos. -There is sufficient light for plants ...
Resource competition
... Before addressing such broad coexistence, it is instructive to understand the competitive exclusion principle in greater detail. We will begin by studying two species competing for a single resource. The theory of this special case was developed in the 1970s and 1980s by Tilman and colleagues.6 For ...
... Before addressing such broad coexistence, it is instructive to understand the competitive exclusion principle in greater detail. We will begin by studying two species competing for a single resource. The theory of this special case was developed in the 1970s and 1980s by Tilman and colleagues.6 For ...
Invasive Species and Population Growth
... Chipping trees: Larry R. Barber, USDA Forest Service, www.bugwood.org, #3047034 Beetle: Michael Bohne, www.bugwood.org, #1262001 Larvae: Thomas B. Denholm, New Jersey Department of Agriculture, www.bugwood.org, #1253027 Tunnels: Steven Katovich, USDA Forest Service, www.bugwood.org, #1398111 ...
... Chipping trees: Larry R. Barber, USDA Forest Service, www.bugwood.org, #3047034 Beetle: Michael Bohne, www.bugwood.org, #1262001 Larvae: Thomas B. Denholm, New Jersey Department of Agriculture, www.bugwood.org, #1253027 Tunnels: Steven Katovich, USDA Forest Service, www.bugwood.org, #1398111 ...
5-1 How Populations Grow
... 1 bacteria after 20 min = 2 bacteria 2 bacteria after 40 min = 4 bacteria 4 bacteria after 60 min = 8 bacteria In 180 min (3 hours) = 512 bacteria In one day = 4,720,000,000,000,000,000,000 bacteria ...
... 1 bacteria after 20 min = 2 bacteria 2 bacteria after 40 min = 4 bacteria 4 bacteria after 60 min = 8 bacteria In 180 min (3 hours) = 512 bacteria In one day = 4,720,000,000,000,000,000,000 bacteria ...
Key - Elder Ecology LEQ Ecological Organization 1. Distinguish if
... it; the sand lance population could continue to decrease because the gull will not feed off but the kittiwake does. However, if the kittiwake population decreases (as the rat and the fox eat them) could increase the sand lance population. If the population of kittiwake decreases, the fox and rat wou ...
... it; the sand lance population could continue to decrease because the gull will not feed off but the kittiwake does. However, if the kittiwake population decreases (as the rat and the fox eat them) could increase the sand lance population. If the population of kittiwake decreases, the fox and rat wou ...
Unit 3 - Cerritos College
... People populations and densities are influenced by factors that are very different from those of most animals and plants. Religion Social Economic Political Some countries are doing better at population control than others World's populace – is still experiencing Exponential Growth – “SKYROCKETING” ...
... People populations and densities are influenced by factors that are very different from those of most animals and plants. Religion Social Economic Political Some countries are doing better at population control than others World's populace – is still experiencing Exponential Growth – “SKYROCKETING” ...
Lesson 8: How Do New Species Emerge?
... Tell student that if a population speciates then the tradeoff of these two advantages must result in an overall advantage for both sub-populations. In this case, the overall advantage is allowing each sub-population to become specialized to survive very well in a different part of the environment. B ...
... Tell student that if a population speciates then the tradeoff of these two advantages must result in an overall advantage for both sub-populations. In this case, the overall advantage is allowing each sub-population to become specialized to survive very well in a different part of the environment. B ...
strategies and actions
... predators. Fluctuations in their abundance have potentially serious implications for the health and productivity of the South-west marine environment. ...
... predators. Fluctuations in their abundance have potentially serious implications for the health and productivity of the South-west marine environment. ...
02Johnson
... • Darwin expanded Malthus’ view to include every organism all organisms have the capacity to over-reproduce only a limited number of these offspring survive and produce the next generation ...
... • Darwin expanded Malthus’ view to include every organism all organisms have the capacity to over-reproduce only a limited number of these offspring survive and produce the next generation ...
Acta Oecologica-International Journal of Ecology
... Eumeces brevirostris (100 %) and Barisia imbricata (77.7 %). Sceloporus poinsetti is mainly observed on rocks (43.6 %) but also on fallen trunks (27.7 %) and stumps (21.8 %) while the other rockdwelling species, Sceloporus jarrovi is generally found on steep rock faces (67.7 %) and also on big rocks ...
... Eumeces brevirostris (100 %) and Barisia imbricata (77.7 %). Sceloporus poinsetti is mainly observed on rocks (43.6 %) but also on fallen trunks (27.7 %) and stumps (21.8 %) while the other rockdwelling species, Sceloporus jarrovi is generally found on steep rock faces (67.7 %) and also on big rocks ...
Document
... • The likely effect of competition on any individual is greater the more competitors there are. – The effects of intraspecific competition are thus said to be density dependent. ...
... • The likely effect of competition on any individual is greater the more competitors there are. – The effects of intraspecific competition are thus said to be density dependent. ...