Nasa Moon Mission & Ecology

Current NASA mission to fly crew of four astronauts around the moon.
Historic mission for multiple reasons: - First time a woman is traveling to space: Christina Cook. - First time a person of color is traveling to the moon: Victor Glover. - First non-American to travel to the moon: Jeremy Hansen, a Canadian astronaut.
Live streaming available on NASA's YouTube.

The photograph released shows Earth from the dark side.
Notable differences from Apollo-era photographs: - Lower resolution Apollo photographs compared to modern imaging technology.
Characteristics of the New Photograph: - Stars visible due to longer camera exposure; contrast with Apollo-era images which lacked visible stars. - Venus visible in the lower right corner of the image. - Thin halo-like line around Earth indicating the atmosphere.

The atmosphere appears as a thin blue line, showcasing the narrow habitat zone where life exists, termed the biosphere.
Importance of this thin area stressed by astronauts when viewing Earth from space.
Auroras present in the photograph: - Southern Lights (Aurora Australis) visible in greenish-blue color. - Northern Lights also visible, highlighting solar activity in the atmosphere.

Geographic details included in the image: - Northwest edge of Africa and the Sahara Desert visible. - Locations of cities in Spain and Morocco identified in the imagery.
Historic Significance of the Mission: - The mission’s path takes astronauts farther from Earth than any humans have traveled before.

Transition into the final unit on ecology.
Definition of Ecology: The study of interactions between organisms and their environment, comprising both living and nonliving components. - Common misconception: many use "ecological" to mean environmentally conscious; however, this definition focuses on interactions rather than conservation efforts.
Conservation biology is a separate field applying ecological science to preservation.

Levels arranged from most inclusive to least inclusive: - Ecosystem → Community → Population → Individual. - Visual representation from textbook presented.
Topic: Global ecology and organismal ecology connections.

Inquiry: Why do elephants not inhabit Texas?
Consideration of physical and biological (abiotic and biotic) necessities for organisms: - Weather/climate, food sources, and biological competition addressed.

Methodology of identifying suitable habitats based on known species locations and environmental conditions.
Use of data on temperature, rainfall, and seasonal changes to predict possible environments for species habitation.
Example: Research conducted on leafcutter ants.
Application in predicting suitable habitats for invasive species like fire ants: - Native to South America, predicted distribution contrasted with actual occurrences in North America.

Different mechanisms of organism movement discussed: - Dispersal: active movement of organisms through various means, e.g., wind, ocean currents.
Example of Cattle Egret: - Originally from Africa, introduced into North America in the 1930s. - Spread effectively by utilizing unoccupied ecological niches, such as following cattle for insects.

Vicariance definition: organisms’ geographical distribution changes due to barriers in their environment (e.g., continental drift).
Examples: - Squirrel species across the Grand Canyon: separated due to the canyon formation leading to allopatric speciation.
Discussion on historical geographical changes in Central America: - Formation of the land bridge allowing dispersal between North and South America known as the Great American Biotic Interchange.

Arctic Fox vs. Red Fox: - Arctic fox distribution restricted due to competition with red foxes for den sites, despite proper habitat conditions existing further south.

Case of a tree species reliant on elephants for seed germination, illustrating mutualistic relationships.
Exploration of historical distribution of elephants, their dispersal capabilities, and ecological interactions.

Leading cause of elephant deaths now: human poaching for ivory.
Discussion of mammoth extinction possibly due to human hunting correlating with their historical range.

Geographic range influenced by: - Physical habitat requirements, dispersal ability, biotic interactions (competition/symbiosis), and historical factors.
Emphasis on understanding diverse ecological concepts when studying distributions and species interactions.

Area between a mountain range and the coast is not always wet due to varying geographic and climatic factors (e.g., Atacama Desert example).
Ensure a comprehensive understanding of ecological principles in species distribution to prepare for the upcoming midterm exam.