Coral Reefs & Lagoons Part 3

Slides:

Advertisements

Similar presentations

Symbiosis between Zooxanthellae & Corals By Mark Mergler.

Advertisements

Climate Change: Past, Present and Future. Warm up: 1.Sketch a graph (Global Temperature vs. Time) for the past 20,000 years and predict how climate has.

Chapter 3, Section 4 Rocks From Reefs Monday, December 14, 2009 Pages

Part I Section 5.  Invertebrate marine animal  A polyp that begins to form an exoskeleton ◦ CO 2 & Ca in the water to make calcium carbonate (CaCO 3.

CORAL REEFS The Tropical Rainforest of the Sea….

Coral Reefs. Facts about Coral Reefs Largest living thing on Earth Covers less than 1% of the Earth’s Surface Needs sunlight to grow.

Coral Reef Formation By Kurose.

Corals Overview Coral reefs are underwater structures made from calcium carbonate secreted by coral polyps. Although coral is often mistaken for a rock.

Cambridge Marine Science AS Level

Lesson 3 Evaluate the reliability of different methods of measuring climate change.

Past Climate Reconstruction and Climate Proxies. Note: This slide set is one of several that were presented at climate training workshops in Please.

Ch4 Sec4 Rocks from Reefs.

Marine Ecology Coral reefs.

Coral Reefs of Costa Rica

By Dustin Price , Nathan Blackmon , Josh Crawford , and Osmond Curtis

Part II Section 5.  What is a coral? What is a coral?  Healthy corals accumulate CaCO 3 at rate of 3-15 meters in 1000 years.

Coral Reefs and Island Formation. How old are today’s reefs?

Discussion 4/24 Climate patterns & climate change.

What evidence supports the hypothesis that carbon dioxide is linked to average global temperature? 2 main lines of evidence: Direct measurements Indirect.

Detecting Past Climates

21.3 – Absolute Age Dating. Absolute Age Dating Enables scientists to determine the numerical age of rocks and other objects.

Kelly Lekan. Early Reefs First appearance of reefs around 570 million years ago. The first reefs formed were made of cyanobacteria. –Were found living.

Climate Changes Past and Future. Defining Climate Change  Response of Earth-atmosphere system to changes in boundary conditions  What external factors.

Predicting Past Climates Huzaifa and Shajee. We will talk about: Predicting Past Climates: Ice Cores Record temperature data by trapping gases such as.

Chapter 7 Aquatic Ecosystems Environmental Science Spring 2011.

Uncovering Earth’s Past Date: 4/3/13 p. 111 in ILL.

Lecture 14. Climate Data ( Chapter 2, p ) Tools for studying climate and climate change Data Climate models Natural recorders of climate or proxy.

Coral Reefs. Facts about Coral Reefs Largest living thing on Earth Covers less than 1% of the Earth’s Surface Needs sunlight to grow.

Coral Reefs Marine Biology Unit #9.

Environmental Factors Affecting Corals Water Motion Depth: photic vs aphotic zone & water motion Sedimentation Salinity: o / oo Temperature:

Absolute-Age Dating 8 th Grade Earth and Space Science Class Notes.

WARNING THIS PRESENTATION CONTAINS CONTENTS AND INFORMATIONS STRICTLY FOR ADULTS ALSO.

 Invertebrate marine animal  A polyp that begins to form an exoskeleton ◦ CO 2 & Ca in the water to make calcium carbonate (CaCO 3 ) aka limestone 

STUDYING PAST CLIMATES. STUDYING CLIMATE IN THE PAST Paleoclimatologists study past climates They use Proxy records; which are stores of information in.

Coral Reefs & Lagoons Part 2

Climate Change Ch. 12 Study Guide. 1. Identify 2 physical features and explain how they influence the climate. Latitude Elevation.

Artificial & Natural Ecosystems By Anne Gillis & Emily Silliker.

The majority of reef building corals are found within tropical and subtropical waters. These typically occur between 30 north and 30 south latitudes. The.

Types of Reefs Atoll Reef- extends all around a lagoon without a central island Fringing Reef- directly attached to shore grow up to the edge of the shore.

Chapter 9 Addressing Climate Change. Discovering Past Climates People have been recording weather data for only a few hundred years. To learn about what.

Tropical Marine Biology

The History of Earth Relative Dating Absolute Dating

8.11 Studying Clues to Past Climates

AICE Marine Science Unit 5

Past Climate Reconstruction and Climate Proxies

What is a Fossil? Traces or remains of living things from long ago.

What are Fossils? Fossils are the evidence or remains of once-living plants or animals Fossils provide evidence of past existence of a wide variety of.

Coral Reef Environment

Coral Reef solid structures built from the remains and deposits of marine organisms called polyps (most the size of your fingernail) organisms secrete.

8:29 REEF HABITATS Coral reefs are only found on western boundary currents where water is warm, shallow, and clear with good light. The coral reef is.

Conditions necessary for reef development

Review: Types of decay 1. Alpha.

Unit 1: Radio Activity Lesson 2: Half-Life

Symbiosis between Zooxanthellae & Corals

Lectures 14-15: Coral reefs

AOSC 200 Lesson 23.

Paleoclimate Proxies A proxy is a natural data set that mimics an environmental change, e.g. increased tree ring width and increased temperature and moisture.

Time it takes for ½ of a radioisotope to decay

ABSOLUTE DATING.

NOTES: GEOLOGIC DATING

Absolute Age of Rocks Notes

NOTES: GEOLOGIC DATING

Studying Past Climates

Measuring the History of Earth

Proxy Measures of Past Climates

Presentation transcript:

Coral Reefs & Lagoons Part 3 AICE Marine Science Unit 5

Artificial Reefs (Made From): Airplanes Obsolete oil rigs Bridges Tyres Junked appliances Ballistic missiles Subway cars Ships Boats Concrete Reef Balls Steel boxes Military equipment (incl. tanks) Docks

Impact of Artificial Reefs Local economies/tourism Habitat for other organisms (& growth site of new coral polyps) Food/fisheries Coastline protection

Disadvantages to Artificial Reefs Expensive / cost (to produce) Difficult to install Navigation hazard Negative impact of tourism / unattractive

Reconstructing the History of Coral Reefs Drilling: core samples; visible layers help to determine age (think of rings in a tree) Geomorphologic analysis: studying the shape; fringing, barrier, or atoll Carbon dating: comparing the proportions of carbon isotopes: 12C & 14C (14C taken up by corals decays to 12C) helps determine the age (14C half-life is 5,730 years)

Drilling Drilling: core samples (drill down past limestone of reef); visible layers help to determine age (think of rings in a tree) Interpretation of the bands provide evidence for changes in the growth rate of corals, in response to changes in environmental conditions, such as temperature or nutrient availability.

Geomorphologic analysis Geomorphologic analysis: studying the shape; fringing, barrier, or atoll study of landforms & the processes involved in shaping them. EX: Reefs forming on the drowned edge of continents during melted glaciers Changes in structure over time

Carbon Dating Carbon dating: used to find the age of a sample of coral. As corals grow, carbon, originating from carbon dioxide, is deposited in their skeleton in the form of calcium carbonate. Some of the carbon taken up by corals, in the form of 14C, slowly decays to 12C. The proportion of 14C to 12C in a sample of material is used to estimate the age of the corals. Carbon dating is used on organic remains up to about 50,000 years old. Ratio of 14C : 12C used to estimate age