Earth Science, Earth's System, ES 1: Geochemical Cycles (HS), ES 4: Carbon Cycling (HS), HE 3: Stratigraphic Records (MS), History of Earth, Inheritance & Variation of Traits, Inheritance 1: Mitosis (HS), Inheritance 4: Population Genetics (HS), Interdependent Relationships in Ecosystems, IR 1: Ecosystem Interactions (MS), Life Science, M&E 1: Photosynthesis (HS), M&E 1: Photosynthesis (MS), M&E 4: Biogeochemical Cycles (MS), Matter & Energy in Organisms/Ecosystems, Natural Selection & Evolution, NSE 1: Fossil Records (MS), NSE 5: Population Flux (HS)

The evolution of diatoms and their biogeochemical functions

The evolution of diatoms and their biogeochemical functions SUMMARY: This article talks about the evolution, cell structure, and ecological role of diatoms. The first section is an introduction to what diatoms are. The second section talks about the evolution of photosynthesis (from cyanobacteria to eukaryotes with chloroplast). The third section explains the significance of the… Continue reading The evolution of diatoms and their biogeochemical functions

Earth Science, Earth's System, ES 5: Life on Earth (HS), HSus 3: Human/Ecosystem Interactions (HS), Natural Selection & Evolution, NSE 4: Adaption (HS), NSE 5: Natural Selection (MS), NSE 5: Population Flux (HS)

Modeling Ecosystem Invasions with Bacteria

Invasion triple trouble: Environmental fluctuations, fluctuation-adapted invaders and fluctuation-mal-adapted communities all govern invasion success SUMMARY: To model how ecosystems react to invaders and temperature changes (due to global warming), researchers used different bacteria clones to simulate invasions. Results showed that communities in fluctuating temperatures were more susceptible to invasion compared to communities with constant temperatures.… Continue reading Modeling Ecosystem Invasions with Bacteria

Life Science, Natural Selection & Evolution, NSE 1: Fossil Records (MS), NSE 4: Adaption (HS), NSE 5: Population Flux (HS)

What Diatoms Can Tell Us

Diatom ecological response to deposition of the 833-850 CE White River Ash (east lobe) ashfall in a small subarctic Canadian lake SUMMARY: This article looks at diatom population differences affected by volcanic rock deposits into a lake before, during, and after an eruption event. Results showed that diatom population patterns were able to quickly return… Continue reading What Diatoms Can Tell Us

Earth Science, Life Science, Natural Selection & Evolution, NSE 4: Adaption (HS), NSE 4: Fitness (MS), W&C 1: Changing Climates (HS), W&C 2: Biomes (MS), W&C 2: Future Climate (HS), Weather and Climate

Predicting Changes in Biodiversity

Risk of biodiversity collapse under climate change in the Afro-Arabian region SUMMARY: This study looked at three families of mammals (rodents, shrews, and bovines) in the Sahara and Arabian Desert regions. Researchers wanted to know how these animals would react to climate change if they were able to move away from the region versus if… Continue reading Predicting Changes in Biodiversity