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

Inheritance & Variation of Traits, Inheritance 2: Genes and Growth (MS), Inheritance 2: Role of DNA (HS), Inheritance 3: Mutations (HS), Inheritance 3: Mutations (MS), Inheritance 4: Population Genetics (HS), Life Science, Natural Selection & Evolution, NSE 2: Evolution Factors (HS), NSE 3: Trait Selection (HS), NSE 4: Adaption (HS), NSE 4: Fitness (MS), NSE 5: Natural Selection (MS), NSE 5: Population Flux (HS), S&F 1: Cells (MS), S&F 1: DNA to Proteins (HS), S&F 2: Cell Function (MS), Structure and Function

How Bacteria Genes Change with Dryness

Environmental filtering of bacterial functional diversity along an aridity gradient SUMMARY: Genes of soil bacteria sampled in the Tibetan Plateau showed that as the environment got drier, the less diverse the genes were. Researchers wanted to compare bacterial gene diversity with the already-known diversity of genes in large animals in various environments. There were less… Continue reading How Bacteria Genes Change with Dryness

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

Inheritance & Variation of Traits, Inheritance 4: Asexual/Sexual (MS), Inheritance 4: Population Genetics (HS), Life Science, Natural Selection & Evolution, NSE 1: Evolution Evidence (HS), NSE 4: Adaption (HS), NSE 4: Fitness (MS), NSE 5: Natural Selection (MS)

Rotifers Eating Foreign DNA

Evidence Supporting the Uptake and Genomic Incorporation of Environmental DNA in the “Ancient Asexual” Bdelloid Rotifer Philodina roseola SUMMARY: This study looked at whether bdelloid rotifers were better at taking in DNA compared to Monogononta rotifers. Bdelloids are a class of rotifers that only reproduce asexually. There has never been a male observed. Their cells… Continue reading Rotifers Eating Foreign DNA