How nocturnal passerine passage at Gibraltar is studied
Radar and infrared observations help study night-time movements near the Strait. Flight direction and species identity are different questions.
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What Homologous and Analogous Structures Allow Us to Compare
Comparing structures can raise two distinct questions: whether they share an evolutionary origin or whether their resemblance arose independently. The relevant sources available here are encyclopedia entries, not independent scientific s...
What Homologous and Analogous Structures Allow Us to Compare
Comparing structures can raise two distinct questions: whether they share an evolutionary origin or whether their resemblance arose independently. The relevant sources available here are encyclopedia entries, not independent scientific s...
Viruses and bacteria under the microscope: what we know about scale and how they are studied
Bacteria are larger than viruses, but that difference alone does not explain which method is appropriate. The sources describe viral structures, observation with electron microscopes, and techniques that detect genetic material in sample...
Viruses and bacteria under the microscope: what we know about scale and how they are studied
Bacteria are larger than viruses, but that difference alone does not explain which method is appropriate. The sources describe viral structures, observation with electron microscopes, and techniques that detect genetic material in sample...
Hydrothermal Features: What a Yellowstone Guide Can Say About Energy
The Yellowstone National Park guide links geysers, hot springs, mud geysers, and fumaroles with ongoing volcanic activity. But this geological clue does not explain where organisms in a hydrothermal community get their energy. [5504]
Hydrothermal Features: What a Yellowstone Guide Can Say About Energy
The Yellowstone National Park guide links geysers, hot springs, mud geysers, and fumaroles with ongoing volcanic activity. But this geological clue does not explain where organisms in a hydrothermal community get their energy. [5504]
A Salt Lagoon Alone Does Not Reveal the Limits of Life
At Vermelha Lagoon in Brazil, microbial mats were observed growing at some stations in a hypersaline ecosystem. This is evidence of activity at that site, not a measure of the maximum salinity those organisms can withstand: the available...
A Salt Lagoon Alone Does Not Reveal the Limits of Life
At Vermelha Lagoon in Brazil, microbial mats were observed growing at some stations in a hypersaline ecosystem. This is evidence of activity at that site, not a measure of the maximum salinity those organisms can withstand: the available...
A Map of Forest Transitions in South Korea, Not Exact Boundaries
A study published on September 6, 2026, classified ecotones between vegetation and climate zones in South Korea’s temperate forests. Its map places these transition areas across about 29% of the area analyzed, but the publication date do...
A Map of Forest Transitions in South Korea, Not Exact Boundaries
A study published on September 6, 2026, classified ecotones between vegetation and climate zones in South Korea’s temperate forests. Its map places these transition areas across about 29% of the area analyzed, but the publication date do...
Acclimatization and adaptation at altitude: what a review distinguishes—and what it does not demonstrate
A review of altitude hypoxia distinguishes physiological responses in the first few days from changes it links to many generations. The distinction is useful, but by itself it does not establish which changes are inherited or what mechan...
Acclimatization and adaptation at altitude: what a review distinguishes—and what it does not demonstrate
A review of altitude hypoxia distinguishes physiological responses in the first few days from changes it links to many generations. The distinction is useful, but by itself it does not establish which changes are inherited or what mechan...
The red deer rut and population monitoring in Quintos de Mora
The red deer’s voice marks a reproductive season. In Quintos de Mora, this period is also used to monitor the population and its relationship with woodland.
Bee-eaters in Doñana: from natural ground to roadside nesting
Ground that allows a nest to be excavated can also expose birds to risks. Doñana provides a documented case of changing nesting sites.
The red deer rut and population monitoring in Quintos de Mora
The red deer’s voice marks a reproductive season. In Quintos de Mora, this period is also used to monitor the population and its relationship with woodland.