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Investigates both saltwater and freshwater biomes. Explores how ocean temperature, salinity, and depth affect the enormous diversity of marine life. Covers the intertidal, neritic, and open ocean zones and their characteristics. Also examines estuaries and freshwater biomes such as streams, lakes, and ponds. Defines terms and concepts, and reviews content before a quiz.
(Source: DCMP)
Ocean “dead zones” along the Washington and Oregon coasts are threatening critical U.S. fishing areas. These oxygen-depleted regions, that loose virtually all of their marine life in the summer, are expanding, and new ones are appearing in the Pacific Ocean. With support from the National Science Foundation, Oceanographer Jack Bath is also using an impressive new tool, an unmanned underwater glider that provides round the clock monitoring of these zones.
How does yeast make bread grow? The scientists will experiment with the ingredients in bread to discover how this happens. They will also explain why time zones exist. Part of the House of Science Series.
Earth's landscapes vary because there are different climatic zones that have unique, distinguishing conditions. One of these, the tropic zone, is divided into four more specific zones. The rainy tropics, wet-dry tropics, tropical and subtropical deserts, and tropical highlands are similar, yet different. Includes information on vegetation, animal life, human settlement, urban centers, and climatic conditions.
The mid-latitude and polar regions are two of earth's three climatic zones. The mid-latitude, or temperate, regions have definite seasonal changes in temperature and length of days and nights. Polar climates have extremely cold temperatures. Covers the climatic characteristics of the five subregions of the temperate and polar zones, noting also the vegetation, animal and human life, urban centers, and food crops.
Different processes in nearby coastal oceans drive the ecosystems found in the Mediterranean climate zones. Atmospheric processes over the oceans influence seasonal rainfall patterns, while currents and ocean temperatures affect both local and regional climate conditions. Part of the "Mediterranean-Climate Ecosystems" series.
Tests the heat zones of a Bunsen burner and shows some elements' coloration when placed in the flame. Notes that chemistry is everywhere, in both natural and man-made components.
Characteristics of the Mediterranean climate include great weather, abundant harvests, and some of the world’s most cosmopolitan cities. These climate zones also house diverse ecosystems, which are dependent of the geology of the regions. Part of the "Mediterranean-Climate Ecosystems" series.
Describes the accelerating impact human activity has on the atmosphere, water, and land use. Focuses on the continuing influences of industrialization, noting particularly the greenhouse effect, global warming, and potential problems with earth's fresh water supply.
Types of climates and climate zones are explained using familiar examples. This video explores the plants and animals that inhabit different climates, the influence of temperature and precipitation on climate, and the causes of climate change over time. Other topics covered include topography, prevailing winds, rain shadow, altitude, climate, latitude, polar zone, temperate zone, and tropical zone.
This episode reveals the devastating impact of human activity on the ocean, focusing on the Mediterranean's contentious bluefin tuna fishery and the Gulf of Mexico's massive deoxygenated dead zones. It also celebrates various conservation efforts and sustainable practices. Part of the "One Ocean" series.
The intertidal oyster reefs along Florida’s Gulf Coast are highly productive ecosystems, but they are threatened by rapid decline. Dr. Kimbro is studying this economically important habitat in order to find a way to restore it. Part of the series "In The Grass, On The Reef."
Great weather, abundant harvests, fabulous food, some of the world's most cosmopolitan and romantic cities are all attributes associated with Mediterranean climates. However, these regions are also critical biodiversity hotspots. This episode offers an overview of the world's Mediterranean-climate zones, pointing out their similarities, unique characteristics and importance, while also illuminating the factors that threaten them. Part of the "Mediterranean-Climate Ecosystems" series.
The intertidal ecosystems lining Florida’s Gulf coast are economically important, but in decline. Dr. Randall Hughes and Dr. David Kimbro, two Florida State University marine ecologists, hope that by studying them, they might gain knowledge that will help preserve salt marshes, oyster reefs, and seagrass beds. Part of the series "In The Grass, On The Reef."
Will the oil spill in the Gulf of Mexico create dead zones? That’s the concern of University of Georgia marine scientist Samantha Joye. She’s headed to the gulf to investigate how the oil and methane gas discharged by the BP Deepwater Horizon spill is impacting the ocean microbes that live there. With funding from National Science Foundation, she is also looking at how the dispersants used to break up the oil are impacting marine life, including microbes, fish, and shellfish.
Global warming is accelerating the melting of the world’s glaciers. The rate of glacial retreat has increased over the last hundred years due to global warming and the increase of greenhouse gas emissions. The increase in glaciers melting has significant impact on the water supply for many global communities. Glacial retreat also impacts world climate zones since glaciers help regulate the climate of the planet. However, scientists argue that it is not too late to reverse the effects of global warming in an effort to decrease the rate at which glaciers are melting. Chapter 11 of Air: Climate Change Series.
University of Pennsylvania ecologist Peter Petraitis, California State Northridge biologist Steve Dudgeon, and their team have been returning to Maine’s rocky intertidal zone every spring and summer for nearly two decades. With support from the National Science Foundation (NSF), they survey a network of 60 experimental plots. The big question that brings them back year after year: Is an ecosystem like this a stable and permanent fixture, or, under harsh conditions, could it reach a tipping point? The idea is that changes in conditions could cause a switch from one community to another, such as from mussel beds to rockweed, and then back again. Part of the National Science Foundation Series “Science Nation.”
Moko is an explorer. As he travels the world continent by continent, he makes many friends and discovers many natural phenomena which sometimes delight him, and other times scare him. Each animated episode recounts an adventure and takes an "original story" approach to explaining these natural phenomena. In this episode, Moko thinks that somewhere lies a creature that blows so hard that it makes the boughs of trees quiver and creates the desert dunes. He believes that the clouds flee before the wind comes because they are afraid of the creature. He decides to go look for it. Tired after walking beneath the hot sun, a fresh, light breeze makes his rest more pleasant. However, the creature is actually the Harmattan blowing over West Africa.
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