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With support from the National Science Foundation, Lake Ecologist Jasmine Saros and her team from the University of Maine are gathering diatoms from the lake waters of southwestern Greenland. They are using the diatoms in their studies of how climate change is affecting this Arctic ecosystem. Diatoms are a type of algae that responds rapidly to environmental change. Diatom species generally associated with warmer conditions are increasing at unprecedented rates in the sediment record.
(Source: DCMP)
Gorongosa National Park was once famous for its lion population. However, during Mozambique’s struggle for independence and subsequent civil war, the park’s iconic wildlife was slaughtered. In 2008, a massive ecosystem restoration project began. Today, many animals are bouncing back in large numbers, but it is unclear if the lions are also making a strong recovery. Paola Bouley heads the “Gorongosa Lion Project,” an effort to document the lions’ response to the park’s restoration and identify any factors that may be limiting their recovery.
Algae play a vital role in the marine ecosystem. They provide food for all sorts of species, but in rare instances, they can also do harm. Harmful algal blooms occur when colonies of certain types of algae grow out of control and produce toxins that enter the food chain through fish and shellfish. Eventually, the toxins can kill larger marine animals like sea lions, manatees, turtles, and dolphins. It also makes shellfish unsafe for human consumption.
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."
Deep in Southern Mexico's jungle, the Villa Luz limestone caves support an ecosystem that thrives in a highly poisonous, acidic environment. This rare type of cave is found in few spots on Earth. Geologists and biologists wear gas masks and protective outerwear to explore the caves. All life forms, from microbial colonies to spiders, fish and bats, are interdependent upon the toxic soup of water, sulphur-oxide and hydrogen monoxide for survival.
Climb aboard the Cyclops, a microscopic research vessel, and investigate an amazing hidden world on which all living things depend. The Cyclops houses a team of scientists known as the Micronauts and guides them through their discoveries of biological classification, diversity, and ecology. In this episode, the Micronauts take to the air and discover that lawns and flower gardens are home to a variety of insect pollinators and predators. From the air, they witness the role insects play in the backyard ecosystem. Part 11 of Microscopic Monsters Series.
Contains 8 segments: "Matter and Energy for Life," "Ecosystems," "Populations," "Homeostasis: The Body in Balance," "Inheritance," "Behavior and the Nervous System," "Biodiversity," and "The Biosphere." Students have opportunities to become involved in hands-on activities. Supports the learning of key concepts in biology in tandem with the textbook also offered by the publisher.
At the National Science Foundation-funded Center for Environmental Implications of Nanotechnology (CEINT), headquartered at Duke University, scientists and engineers are researching how nanoscale materials affect living things. One of CEINT's main goals is to develop tools that can help assess possible risks to human health and the environment. A key aspect of this research happens in mesocosms, which are outdoor experiments that simulate the natural environment. These simulated wetlands in Duke Forest serve as a test bed for exploring how nanomaterials move through an ecosystem and impact living things. Part of the “Science Nation” series.
This episode features the development of a new camera that detects cancer. Its design is based on the structure of a butterfly's eye. Scientists are also experimenting with ominphobic materials that repel dirt. Studies also reveal that animals are beginning to recolonize ecosystems that were once prime hunting grounds for them. Part of the "4 Awesome Discoveries You Probably Didn't Hear About This Week" series.
What do crocodiles and leopards have in common? Century-old specimens of both are helping to decode the biodiversity of ecosystems that are under threat today. Researcher Evon Hekkala and curator Joel Cracraft help unravel the mystery of cryptic species. Part of the "Shelf Life" series.
Year after year massive fires continue to rip through the wildland-urban interface (WUI) in Colorado. Some scientists fear that the forests may not be able to recover due to a warming climate. Colorado University PhD student Monica Rother investigates post-fire ecosystems in an effort to predict what the Colorado Front Range might look like in a warmer, drier future. Part of the WildFire PIRE series.
Humans construct boundaries around homes, neighborhoods, and nations to bring order to a chaotic world. However, they rarely consider how these boundaries affect the environment or others. Photographer Krista Schlyer and biologist Jon Beckman study how fabricated barriers influence the movement of wildlife. Schlyer and Beckmann have seen the damaging impacts resulting from the wall built along the Mexico-United States border. Humans probably will not stop constructing walls and fences any time soon, but planning the boundaries with wildlife in mind can help prevent these structures from causing environmental harm. Part of the "Think Like a Scientist" series.
The colorful rock formations at John Day Fossil Beds preserve a world class record of plant and animal evolution, climate change, and ecosystems that span over 40 million years. With over 10,000 square miles of land, visitors can explore the prehistoric past of Oregon and see the impact of geologic forces on earth’s landscape.
Photosynthesis converts light energy from the sun into chemical energy stored in organic compounds, which are used to build the cells of producers and ultimately fuel ecosystems. After providing an overview of photosynthesis, a series of animations describe the inside of the cells of a leaf to explain how the reactions of photosynthesis happen.
The Mexican free-tailed bat is one of the most abundant mammals in North America. Outside of San Antonio, Texas there is a cave that is home to over 40 million of these bats. Roosting in large numbers in relatively few areas makes them especially vulnerable to human disturbance and habitat destruction. Documented declines at some roosts are cause for concern because there is a delicate balance in the ecosystem that depends on the bats. There is also cause for concern among other bat species that are falling victim to white nose syndrome, which is a condition named for a distinctive fungal growth around the muzzles and on the wings of affected animals.
The rock pocket mouse is a living example of Darwin’s process of natural selection. Not only is evolution happening right now everywhere around us, but adaptive changes can occur in a population with remarkable speed. This speed is essential if you’re a desert mouse living in an environment where a volcanic eruption can reverse selective pressure in nearly an instant. The film features Dr. Michael Nachman, whose work in the field and in the lab has quantified the selective pressure of predators and identified the genes involved in adaptation. In a complete story, from ecosystem to molecules, pocket mice show us how random changes in the genome can take many paths to the same adaptation—a colored coat that hides them from predators.
In 1977, scientists discovered a diverse community of organisms inhabiting the deep-sea hydrothermal vents of the Pacific Ocean. The sources of energy in these ecosystems are hydrogen sulfide and other inorganic chemicals that are abundant in the water that rises from the vents. Scientists discovered that some animals living near hydrothermal vents, such as the giant tube worm, have a symbiotic relationship with species of bacteria, which allows these animals to survive deep in the ocean. Part of the "I Contain Multitudes" series.
Climb aboard the Cyclops, a microscopic research vessel, and investigate an amazing hidden world on which all living things depend. The Cyclops houses a team of scientists known as the Micronauts and guides them through their discoveries of biological classification, diversity, and ecology. In this episode, the Micronauts come face to face with earthworms. While exploring their burrows, the crew observes the anatomy of earthworms and develops theories about the role earthworms plays in maintaining terrestrial ecosystems. Part 12 of Microscopic Monsters Series.
Welcome to Barrow, Alaska, where a team of marine ecologists gears up to hit the sea ice that is actually teaming with marine life. With support from the National Science Foundation (NSF), Craig Aumack of Columbia University and a team have come here to investigate how algae in the sea ice contributes to the underlying marine ecosystems, and which marine organisms depend on the algae for nutrition. Part of the National Science Foundation Series “Science Nation.”
A quick glance at the marsh next to Saquatucket Harbor in Harwich Port, Massachusetts, reveals right away that some of the grass is missing. The cordgrass there, and all around Cape Cod, has been slowly disappearing for decades. Marine ecologist Mark Bertness of Brown University studies this critical ecosystem, which protects our coastal environment by nurturing a complex web of plants and animals, filtering nutrients, and serving as a critical storm barrier. Bertness says the marshes are being overrun by purple marsh crabs because their main predators, blue crab and finfish, are being overfished. So, the purple marsh crabs are free to gorge on healthy fields of cordgrass and once done feeding, they leave behind nothing but lumpy fields of mud.
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Resources to teach younger students about animals
A collection containing 58 resources, curated by DIAGRAM Center
Biology related concepts
A collection containing 59 resources, curated by Benetech
