When we try to pick out anything by itself, we find it hitched to everything else in the universe. John Muir When we try to pick out anything by itself,

Slides:

Advertisements

Similar presentations

Biological Magnification Bill Addo, Haram Chang, Jay Chen, and Nabila Akthar Biology SB1.

Advertisements

Definitions Bioaccumulation Bioaccumulation is the process by which substances not readily broken down or excreted can build up and be stored in living.

What types of pollution exist in our water?. Pathogens Disease causing organisms such as bacteria, viruses, protozoa and parasitic worms.

What is Bioaccumulation?

Goals  Determine which chemicals present (or potentially present) in the Lake Champlain basin would cause detrimental effects  Determine the pathways.

Sources of Pollutants Point Source Nonpoint Source

Biomagnification Bioaccumulation.

Grade 7 Interactions and Ecosystems

Monday’s Writing Topic

PCB Polychlorinated biphenyl. What are PCBs? PCBs belong to a broad family of man-made organic chemicals known as chlorinated hydrocarbons. PCBs were.

BIOACCUMULATION Chapter 2.3. Chemical Pollutants Humans have been introducing synthetic (man-made) chemicals into the environment. Some examples are:

(c) McGraw Hill Ryerson Effect of Bioaccumulation on Ecosystems Amphibians (like frogs) live on both land and in the water.  They are also sensitive.

2.3 Effect of Bioaccumulation on Ecosystems  Amphibians are valuable indicators of environmental health because they’re sensitive to chemical changes.

Lake Trout 4.83 Lake Trout 4.83 PCBs Background Information: PCBs are a collection of substances used to manufacture different items such as plastics and.

Effects of Bioaccumulation on Ecosystems

What risks do these pollutants pose to us? To determine this we need to understand the following.

36.2 Energy flows through ecosystems

Pollution issues in the Great Lakes Toxic chemicals Nutrients Debris Biological pollution Algae PO 4 Poison With ideas from teachers: Jessie Kubuske, Elaine.

Biology Decision Case Bi o m a g n i f i cati on.

36.2 Energy flows through ecosystems  There is a limited amount of energy in an ecosystem.  It is divided among the different trophic levels.  This.

Biological Magnification Biological Magnification: The process of a chemical buildup, increasing in concentration, as it moves up trophic levels of a food.

Bioaccumulation and Biomagnification. Bioaccumulation This is the way materials become concentrated in the tissues of a living organism. Biomagnification.

(c) McGraw Hill Ryerson 2007 Chapter 2 Energy Flow & Nutrient Cycles 2.3 Effects of Bioaccumulation on Ecosystems p Words to Know: Bioaccumulationkeystone.

Bioaccumulation and Biomagnification

BIOLOGICAL MAGNIFICATION By: Matt and Kristi. What Is Biological Magnification? A trophic process in which retained substances(ex: pesticides or heavy.

Biomagnification Biology. When we try to pick out anything by itself, we find it hitched to everything else in the universe. John Muir When we try to.

Bi o m a g n i f i cati on AP Environmental Science.

BIOMAGNIFICATON Magnification= INCREASE

Bioaccumulation and Biomagnification Tracing Pollution Through An Ecosystem.

2.3 Effect of Bioaccumulation on Ecosystems

Biological Magnification. The problem occurs when a pollutant, such as DDT or mercury, is present in the environment. Chemically, these pollutants resemble.

Biomagnification Biology.

Lesson 10.2: Chemical Hazards

Pollution Any substance added to the environment that is harmful to organisms.

In the early 1950s, there was an outbreak of a serious disease called malaria amongst the Dayak people of Borneo.

Biomagnification When we try to pick out anything by itself, we find it hitched to everything else in the universe. John Muir.

Definitions Bioaccumulation Bioaccumulation is the process by which substances not readily broken down or excreted can build up and.

Biomagnification.

Lake Trout 4.83 Lake Trout 4.83 Mercury (Hg) Background Information: Mercury is an element and it is one common form of pollution across the world. Large.

2.3 Effect of Bioaccumulation on Ecosystems  Amphibians are valuable indicators of environmental health because they’re sensitive to chemical changes.

Science 10 Mr. Francis 5.3 – Bioaccumulation and Biomagnification.

Human Body Part B – Elements of the Body

2.3 Effect of Bioaccumulation on Ecosystems

2.1:Monitoring Water Quality GO C2Identify processes for Measuring the Quantity of Different Substances in the Environment and for Monitoring air and water.

2.3 - Effect of Bioaccumulation on Ecosystems Amphibians (ie. frogs) live both on land and in water. They are sensitive to chemicals changes in the environment,

 Pests are organisms that live in areas where they are not wanted. They cause harm to crops, people or animals.  Pesticides can help rid the areas of.

Health Risk and Toxins Essential Question: how do we determine what is harmful to us?

The student is expected to: 11B investigate and analyze how organisms, populations, and communities respond to external factors; 12C analyze the flow.

Environmental Systems Science Chapter 4 The Organization of Life

Assessing the impact of human activities on Ecosystems 2 -Water Quality Lesson 12 September 13th, 2010.

Bioaccumulation.

Bioaccumulation and Biomagnification

BIOACCUMULATION.

Biological Magnification

BIOACCUMULATION.

2.3 Effect of Bioaccumulation on Ecosystems

Topic 4 How organisms react.

Biomagnification When we try to pick out anything by itself, we find it hitched to everything else in the universe. John Muir.

2.3 Effect of Bioaccumulation on Ecosystems

Bioaccumulation S Describe bioaccumulation and explain its potential impact on consumers. Examples: bioaccumulations of DDT, lead, dioxins, PCBs,

BELL RINGER What do you think this image is showing?

Biomagnification and Bioaccumulation

Racheal Carson, “Silent Spring”

Back in 1987 there was some concern over the health of women in an industrial neighbourhood of Quebec City.

FLOW OF ENERGY AND NUTRIENTS WITHIN ECOSYSTEMS

Bioaccumulation And Biomagnification.

Energy Flow Through Ecosystems

Water Pollution Water pollution is the addition of any substance that _____________ effects the water and living things in the water. The amount of ____________.

Presentation transcript:

When we try to pick out anything by itself, we find it hitched to everything else in the universe. John Muir When we try to pick out anything by itself, we find it hitched to everything else in the universe. John Muir

Homework – Share out 1 – 2 minutes per team member 1 – 2 minutes per team member 1. Identify the situation 1. Identify the situation 2. Describe the graph 2. Describe the graph 3. Explain your conclusion 3. Explain your conclusion

Biomagnification

DDT and Bioaccumulation (absorbed or stored in organs) and Biomagnification (through a food chain) Fig p. 231

Biomagnification Definition: Definition: Biomagnification, is the increase in concentration of a substance, such as the pesticide DDT, that occurs in a food chain Biomagnification, is the increase in concentration of a substance, such as the pesticide DDT, that occurs in a food chain

The Problem: Peregrine Falcons Extirpated from much of U.S.

Osprey and Bald Eagles were declining, as well.

Meanwhile, in Borneo: Roofs began to fall Roofs began to fall Gecko-eating cats began to die, Gecko-eating cats began to die, and thriving rats brought plague and typhus and thriving rats brought plague and typhus The World Health Organization began to parachute cats into Borneo, but what was causing these problems? The World Health Organization began to parachute cats into Borneo, but what was causing these problems?

The problem magnifies: MethylMercury concentrates just like DDT and damages human Nervous Systems MethylMercury concentrates just like DDT and damages human Nervous Systems A person who eats one meal of lake trout from Lake Michigan will be exposed to more PCBs in one meal than in a lifetime of drinking water from the lake! A person who eats one meal of lake trout from Lake Michigan will be exposed to more PCBs in one meal than in a lifetime of drinking water from the lake!

Mercury Health Effects

Case Study: PCBs PCBs, or polychlorinated biphenyls, are a group of man-made chemicals. PCBs, or polychlorinated biphenyls, are a group of man-made chemicals. Introduced in 1929 and widely used in electrical transformers, cosmetics, varnishes, inks, carbonless copy paper, pesticides and for general weatherproofing and fire-resistant coatings to wood and plastic. Introduced in 1929 and widely used in electrical transformers, cosmetics, varnishes, inks, carbonless copy paper, pesticides and for general weatherproofing and fire-resistant coatings to wood and plastic. The federal government banned the production of PCBs in 1976 The federal government banned the production of PCBs in 1976 PCBs can effect the immune system, fertility, child development and possibly increase the risk of certain cancers PCBs can effect the immune system, fertility, child development and possibly increase the risk of certain cancers PCBs, or polychlorinated biphenyls, are a group of man-made chemicals. PCBs, or polychlorinated biphenyls, are a group of man-made chemicals. Introduced in 1929 and widely used in electrical transformers, cosmetics, varnishes, inks, carbonless copy paper, pesticides and for general weatherproofing and fire-resistant coatings to wood and plastic. Introduced in 1929 and widely used in electrical transformers, cosmetics, varnishes, inks, carbonless copy paper, pesticides and for general weatherproofing and fire-resistant coatings to wood and plastic. The federal government banned the production of PCBs in 1976 The federal government banned the production of PCBs in 1976 PCBs can effect the immune system, fertility, child development and possibly increase the risk of certain cancers PCBs can effect the immune system, fertility, child development and possibly increase the risk of certain cancers

The Problem is ongoing: PCBs (polychlorinated biphenyls) PCBs (polychlorinated biphenyls) PAHs (polynuclear aromatic hydrocarbons) PAHs (polynuclear aromatic hydrocarbons) Heavy metals: Heavy metals: mercury mercury copper copper cadmium cadmium chromium chromium lead lead nickel nickel zinc zinc tin tin TBT (tributyltin) TBT (tributyltin) mercury from gold mining mercury from gold mining cyanide cyanide selenium selenium The number of new molecules we introduce into our environment continues to increase.

The Ultimate Solution? Models are being developed to predict toxicity of new chemicals Models are being developed to predict toxicity of new chemicals Pollution control must be intensified: Pollution control must be intensified: Zero Tolerance in the Great Lakes? Education: Increase awareness so Education: Increase awareness so everyone will decrease use and dispose of chemicals properly.

Biomagnification Through the Food Chain

Horton, in Dr. Seuss’s Horton Hears a Who “We’ve GOT to make noise in greater amounts! So, open your mouth, lad! For every voice counts!”