THE SILENCE OF THE FROGS Chapter 1 1
- Slides: 20
THE SILENCE OF THE FROGS Chapter 1. 1
§ Amphibians have been around for more than 400 million years. § Frogs and their relatives have adapted to the ice age and global warming. § They can be found in most ecosystems that include water. § ECOSYSTEM – is a term used to describe the relationships among the many species living in an environment and the relationship among those organisms and the non-living components of the environment. § Abiotic (non-living) and Biotic (living) component § Examples: Wetlands, marshes, deserts, lakes, oceans, forests.
Why are Scientists Concerned § Indicator Species § Many believe that the health of amphibians indicates the health of the ecosystem they live in. § Breathe through their skin and……. § Essentially live two different lives – on water and land § Hence the name Amphibian § Amphi (on both sides) Bios (life)
§ § Frogs occupy two different ecosystems: Tadpoles – water ecosystem Adult Frogs – Land Forest Since they are in two ecosystems, they are also in two FOOD CHAINS. § FOOD CHAIN – Is a step-by-step sequence linking organisms that feed on each other, starting with a food source such as a plants (producers), and continuing with animals and other living things that feed on plants and on each other (consumers)
FOOD CHAINS
Parts of a Food Chain: All Food Chains start with the sun as it’s source of energy! § PRODUCER – an organism that can make their own food to give themselves energy. § EXAMPLE: Plants, algae § CONSUMERS: an organism that must get its energy by eating another organism ( cannot make their own food ) § EXAMPLE: animals
FROGS IN THEIR ECOSYSTEMS § § § What do adult frogs eat? Insects ( mostly ) Small fish ( limited ) § § § What animals eat frogs? Large fish Predatory birds Reptiles Small mammals
§ The adult frog is part of a food chain that includes PRODUCERS, HERBIVORES , CARNIVORES , OMNIVORES. § HERBIVORE – Organism that eat only plants § EXAMPLE : Deer, Cow § CARNIVORE – Organism that eats only animals § EXAMPLE : Hawk, Tiger
§ OMNIVORE : Organism that eats both plants and animals. § EXAMPLE: Bears, Humans § § § What do tadpoles eat? Algae ( small plant-like organisms) Both living and dead
§ The Tadpole is a _____, where the adult frog is a _____. § Therefore, the Tadpole is in a different food chain. § The Tadpole has two food sources: § 1. producers ( algae ) § 2. Detritus § DETRITUS – Waste from plants and animals, including their dead remains
§ Detritus food chains are critical in the recycling of matter in ecosystems. § Decomposers are in a Detritus food chain which helps release nutrients to the soil and water. Plants and algae use those nutrients to grow. § DECOMPOSERS – An organism that gets its energy by consuming and breaking down detritus. § EXAMPLES: Bacteria, fungus
Frog/Tadpole Food Chains § Copy both Food Chains into your notebooks § Be sure to clearly label each component
WHY ARE FROGS DISAPPEARING?
The Last Frog Video After viewing the video, respond to the following: n 1. List 3 reasons cited in the video that helps explain the disappearance of the frogs. n 2. What are some things that WE can do as a society to help prevent further declination of the frog species? n
What are the four major factors given in the text for frog decline?
1. LOSS OF HABITAT This is mention as the main cause n We are destroying the water with pollution n We are cutting down forests n We are building highways and cities between the two ecosystems. n
2. AIR AND WATER QUALITY Frogs have thin skin and no protection from the sun. n Frogs breathe through their skin and by lungs. n Acid rain therefore can go through their skin n This affects the ability to reproduce n
3. ULTRAVIOLET RADIATION The thin skin is also susceptible to UV radiation. n Frogs have adapted by developing a black skin and laying black eggs. n Scientists don’t believe that frogs will adapt as fast as global warming. n Why not that beat the ice age!!! n
4. CLIMATE CHANGES Human activities are causing changes in the climate. n Increase use of fossil fuels ( coal, oil, gas) n Climate changes affect the local ecosystems. n
Section 1. 1 Silence of the Frogs (Pg. 10 -13 Wksheet) Questions 1 -11
- The silence of the frogs
- Silence of the frogs
- Bienvenue
- Three unclean spirits like frogs
- Jumping frogs answer key
- Duodenum frog
- Newts frogs and toads
- Describe the frogs as a political drama
- Frogs in the temperate deciduous forest
- Whats the difference between habitat and niche
- Vomerine teeth frog function
- Parts and function of external anatomy of frog
- Incomplete metamorphosis frog
- Do frogs have hair
- Stiokam
- Site:slidetodoc.com
- Story the hungry mouse
- One more night with the frogs
- Frog teeth
- Classification of leopard frog
- 100 frogs