Simplistic view of energy flow Linear path Lacks other possible pathways energy can be passed. Food Chain?

Transcription

1 Simplistic view of energy flow Linear path Lacks other possible pathways energy can be passed. Food Chain?

2 Realistic view of energy passage. Combines food chains. Food Web?

3 Energy Pyramid Quaternary Consumer Tertiary Consumer Secondary Consumer Primary Consumer Primary Producer

4 Energy Pyramid Tertiary Consumer Secondary Consumer Quaternary Consumer Primary Consumer Primary Producer 1 J (Joules) 10 J (Joules) 100 J (Joules) 1,000 J (Joules) 10,000 J (Joules) 100,000 J (Joules)

5 Energy Pyramid: 10% Rule Secondary Consumer Quaternary Consumer Tertiary Consumer 1 J (Joules) 10 J (Joules) 100 J (Joules) Primary Consumer Primary Producer 1,000 J (Joules) 10,000 J (Joules) 100,000 J (Joules)

6 Question of the day?

7 Answer There is not enough energy to maintain organisms at the top of the food chain. Energy is consumed by prior trophic (energy levels) Homeostasis has to be maintained.

8

9 Biomes The Biosphere is divided into regions called Biomes. Occupied by communities or ecosystems of plants and animals that share adaptations which promote survival.

10 Biome Types Tundra Taiga Desert Grassland Temperate Forest Tropical Rainforest Aquatic

11 Characterized by permafrost Short growing season During the summer, the thawing topsoil supports a grassland type community Adaptations (Animals: White fur) Tundra

12 Taiga Winters are cold, and precipitation is in the form of snow. Are characterized by coniferous forests Stays green all year round

13 Desert Hot and dry. Soil is sandy and nutrient poor Growth of annual plants is limited Adaptations: Water conserve

14 Large terrains of grasses, flowers and herbs. Annual amount of rain is relatively high. Grassland

15 Temperate Forest Experiences cold winters and hot summers Large trees Extends in different parts of the northern and southern hemisphere It is where we live

16 Tropical Rain Forest High Rainfall Highest level of biodiversity Hot temperature all year

17 Aquatic Biomes Fresh Lakes, ponds, rivers Roughly 2% of the world s water Salt Oceans Divided into zones Benthic (vegetation cannot grow) Littoral- supports plant life

18 Host Symbiont Parasitism Mutualism Commensalism

19 Commensalism The symbiont benefits and the host is neither helped nor harmed. The symbiont benefits by receiving transportation, housing, and/or nutrition

20 In this photo the cleaner fish receives nourishment by dining off of the parasites and remaining food debris in the eel s mouth. Is this an example of PARASITISM MUTUALISM COMMENSALISM

21 Clownfish are frequently found in the tentacles of sea anemones. Sea anemones capture their prey by paralyzing them with their tentacles. However, the clownfish produces a mucus that prevents the tentacles from harming it. By dwelling amongst the tentacles the clownfish receives a protected home. This relationship is an example of PARASITISM MUTUALISM COMMENSALISM

22 The birds in the picture are munching on tiny parasitic insects located on the rhino. The relationship between the birds and the rhino is an example of PARASITISM MUTUALISM COMMENSALISM

23 Lampreys are primitive fish with limited digestive systems. They attach to and feed on the body fluids of fish with more advanced digestive systems, often leading to the death of the host fish. This relationship is an example of PARASITISM MUTUALISM COMMENSALISM

24 Orchids grow on the branches of high trees. These orchids get more water and sunlight than those on the ground. The tree is unaffected by the orchid s presence. This relationship is an example of PARASITISM MUTUALISM COMMENSALISM

25 What type of tropism is shown in these pictures?

26 Impact of Biotic and Abiotic Factors Density-dependent factors: 1. Biotic factors in the environment that depends on population size (disease, competition, parasites) Density-independent factors: Abiotic factors in the environment that affect populations regardless of their density (temperature, weather)

27 Succession Primary colonization of new land which was never inhabited Secondary colonization of land that takes place after a natural disasters or human actions.

28 Important Indicators of Succession Pioneer Species First species to appear during succession Example - Lichen Keystone Species a highly depended on organism that if removed the ecosystem would change drastically. Example - Bees

29 Life Being Reintroduced The first organisms to inhabit an area are called pioneer species (lichen). The 2 nd group of organisms to inhabit the area are bacteria, protists, mosses, and fungi The 3 rd group include insects & arthropods The 4 th group include grasses, herbs, shrubs, & trees

30 How do Populations Grow Back? Exponentially J-shaped curve occurs when population growth starts slow then increases rapidly. Logistically S-shaped curve occurs when population growth reaches its carrying capacity due to limiting factors and levels off.

31 How do Populations Grow Back? Carrying Capacity- The maximum population size that can be supported by the available resources

32 Checkpoint #1 Q: What are the 2 types of succession? A :Primary and secondary Q: The first group of species to inhabit an area are example. A: Pioneer species example lichen Q: What are the last group of species to inhabit an area? A: trees and grass

33 Checkpoint #2 1. An active volcano under the ocean erupts, and the build-up of cooled lava eventually forms a new island. What type of succession will immediately occur on the newly formed island? A. primary succession C. both primary & secondary B. secondary succession D. no succession 2. A lack of food prevents further growth in a deer population. This is an example of a A. range of tolerance C. phonic zone B. limiting factor D. biome 3. When populations increase, resource depletion may result in A. exponential growth C. competition B. straight-line growth D. increase in predators

34 Continued 4. Type of population growth that reaches carrying capacity is called. A. demography C. logistic B. exponential D. j- shaped 5. An example of a density dependent factor is. A. disease C. weather B. natural disaster D. seasonal cycles 6. An example of a pioneer specie would be. A. pine trees C. maple trees B. lichen D. shrub