Across
- 5. The introduction of harmful materials into the environment often from human sources
- 6. Created from a mutualistic symbiotic relationship between a plant and a fungus - often the pioneer species in primary succession
- 7. Aquatic regions where sunlight penetrates, able to support photosynthesis
- 8. Predictable changes in an ecosystem as it progresses from pioneer species on bare rock to a mature climax community - starts with no soil
- 10. Non-native species in a community, often able to outcompete endemic species because they are removed from the limiting factors they evolved with
- 12. Visual representation of the feeding interactions in ecosystems - helps show interconnectedness among species
- 14. Measurement of the variety and richness of an ecosystem, measured in part by species richness, species evenness, and endemic species
- 15. Predictable changes in an ecosystem after a disturbance as it progresses toward reestablishing a mature climax community - some soil already exists
- 17. Clearing forested land and repurposing it for non-forest use like agriculture, or urban development
- 18. Mature form of an ecosystem, end result of biological succession
- 20. Land ecosystems characterized by average temperature and precipitation - includes the tundra, grasslands, deserts, boreal forest, temperate forests, savannas, and tropical rainforests
- 21. Long term changes in average global temperatures causes changes in weather patterns - human interactions with ecosystems have accelerated this process
- 22. Biomes where fresh and saltwater meet - typically very productive areas due to influx of nutrients from terrestrial ecosystems
Down
- 1. Pockets ecosystems at the bottom of the ocean near divergent plate boundaries - producers in this ecosystem use chemosynthesis
- 2. When human populations become so large they are not able to be supported by ecosystems - populations are higher than carrying capacity
- 3. Key organisms in an ecosystem that help stabilize or maintain that ecosystem - ex wolves in yellowstone
- 4. Water ecosystems characterized by light availability, water depth, and salinity - includes intertidal areas, continental shelf, coral reefs, pelagic zones, benthic zones, photic and aphotic zones, and hydrothermal vents
- 9. Species that evolve and are only found in one isolated geographic location - ex: marsupials in australia
- 11. First species to invade or populate an area, typically a lichen in primary succession
- 13. Aquatic regions that do not have sunlight, unable to support photosynthesis
- 16. Collection of ecosystems characterized with similar temperatures, rainfall totals, and climax communities
- 19. exclusion principle No 2 species can occupy the same niche in an ecosystem, one species will outcompete the others