APES 10/8 and 10/9  Please take out your Mono Lake assignment for stamping  Get a laptop  I won’t be returning your quizzes today as I still have 8 students who need to take it….I’ll update Skyward in the next 2 days with your score

Mono Lake FRQ  Read the provided answer key  In a different color, add the key points that you’re missing  This is an example of FRQ #3 or #4 on the APES test

Learning Targets  I can analyze the ecological effects of reduced (and then increased!) water flow into a terminal lake.  I can take baseline measurements of the abiotic components of my ecosystem.  I can correct apply aquatic biome definitions to my ecocolumn.

EcoColumns, Day 2  Goal = get through step 14  Step 10 says to let water drain overnight. You can still collect and test a water sample today as it drains.  Baseline Measurements Dissolved oxygen, pH, nitrite, phosphate levels of the bottom water level Temperature of water Adjustments to ecocolumn (record what is initially in there)

EcoColumns, Day 2  No need to tape your ecocolumn unless it is unstable.  Place it on the grow cart (labeled!)  Clean Up! Wipe up spills (water, soil, etc.) Return all items neatly to the cart Throw away paper towels, etc. Clean off lab stations with Clorox Wipes

Freshwater Communities Let’s learn more about what we are trying to make a heavily-linked terrestrial and freshwater ecosystem!

Biomes: Aquatic Communities Freshwater Communities:  Freshwater habitats; lakes, ponds, streams and rivers, are very limited in area.  Lakes cover only about 1.8 percent of the earth’s surface and rivers only.3 percent.  All freshwater habitats are strongly interconnected to terrestrial (land) habitats.

Biomes: Aquatic Communities Freshwater Communities  Many kinds of organisms are restricted to freshwater habitats; including plants, fish, and a variety of arthropods, mollusks, and other invertebrates too small to be seen by the naked eye. Food web showing overlap of aquatic and terrestrial communities

Biomes: Aquatic Communities Freshwater Communities:  Ponds and lakes have three zones in which organisms live.  The littoral zone is a shallow zone near the shore.  Here aquatic plants live along with various predatory insects, amphibians and small fish.

Biomes: Aquatic Communities Limnetic Zone:  The limnetic zone refers to the area that is farther away from shore but close to the surface of the water.  It is inhabited by floating algae, zooplankton, and fish.

Biomes: Aquatic Communities Profundal Zone:  The profundal zone is a deep water zone that is below the limits of light penetration.  Not all freshwater systems are deep enough to have a profundal zone.

Biomes: Aquatic Communities The Benthic Zone  The Benthic Zone is the “soil” of a freshwater or ocean ecosystem  It contains billions of benthos- insects and decomposers that break down nutrients and recycle them

Biomes: Wetlands  Swamps, marshes, bogs and other communities that are covered with a layer of water are called wetlands.  Typically covered with a layer of water-tolerant plants called hydrophytes (ex: marsh grasses, cattails)  Wetlands are diverse environments that support a variety of invertebrates, birds, and other animals.

Biomes: Wetlands  Wetlands are among the most productive ecosystems on Earth, exceeded only by coral reefs in their diversity and concentration of species.  Wetlands also provide a key ecological service: water storage basins that moderate flooding, allowing a safe zone that can hold waters when periods of heavy precipitation occurs.

Biomes: Wetlands Wetlands:  Many wetlands are being disrupted by human development as urban communities expand.  New developments are required to avoid wetlands, and build their own water storage systems

Check for Understanding  Which of these terms apply to your ecocolumn? Sketch your ecocolumn in the Lab section of your lab book. Label it with the appropriate terms: littoral zonelimnetic zone profundal zone benthic zonebenthosterrestrial freshwatermarsh/bogwetlands

Upcoming Homework Chapter 3 Reading Assignment- Take notes on chapter 3, plus answer all end of module and end of chapter multiple choice. Define any terms not already included in your notes Due date: Wed., 10/14 (blue); Thurs., 10/15