Global Warming
Global Warming - Related Videos
01:50
Global Climate Change
0 Views •
2019
Throughout its ~4.5 billion year history, the Earth has experienced periods of warming and cooling. However, the current drastic increase in global temperatures is well outside of the Earth’s cyclic norms, and evidence for human-caused global climate change is compelling. Paleoclimatology, the study of ancient climate conditions, provides ample evidence for human-caused global climate change by comparing recent conditions with those in the past. Past Periods of Warming and Cooling In the last...
10:00
Gradient Echo Quantum Memory in Warm Atomic Vapor
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Cited by 2 •
2013
The gradient echo memory is a protocol for storing optical quantum states of light in atomic ensembles. Quantum memory is a key element of a quantum repeater, which can extend the range of quantum key distribution. We outline the operation of the scheme when implemented in a 3-level atomic ensemble.
12:48
Measuring Near Plasma Membrane and Global Intracellular Calcium Dynamics in Astrocytes
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Cited by 16 •
2009
We describe how to measure near membrane and global intracellular calcium dynamics in cultured astrocytes using total internal reflection and epifluorescence microscopy.
13:14
Global Gene Expression Analysis Using a Zebrafish Oligonucleotide Microarray Platform
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Cited by 3 •
2009
Gene microarrays are powerful tools in gene expression profiling at a genome-wide level. This technology has application in a variety of biological disciplines including developmental biology and toxicology. In this video, we detail a protocol for global gene expression analysis using a comprehensive oligonucleotide microarray platform for the zebrafish.
09:29
2-Vessel Occlusion/Hypotension: A Rat Model of Global Brain Ischemia
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Cited by 35 •
2013
Bilateral carotid occlusion coupled with systemic hypotension produces global brain ischemia in the rat, resulting in damage to the hippocampus with reproducible severity. Animal subjects are impaired with predictable patterns of brain damage, they recover expediently, and mortality rates are comparatively low.
FAQs
Higher concentrations of carbon dioxide, methane, and other greenhouse gases absorb more of the infrared radiation that Earth emits toward space. This strengthens the greenhouse effect and contributes to a long-term rise in average surface temperature. The resulting change in climate conditions creates the physical basis for biological responses across organisms, populations, and ecosystems.
These conditions can challenge organismal physiology, the processes that keep organisms functioning, while also changing the environments in which species survive and reproduce. Heat and drought increase environmental stress on land, whereas altered ocean conditions affect marine organisms. Considering these pressures together helps biologists evaluate responses to global warming more accurately.
As climate conditions change, species may experience environments that differ from those associated with their current ranges. Global warming can therefore alter species distributions, while changes in temperature and other conditions can shift seasonal timing, such as when biological events occur. These changes may affect interactions among organisms and the structure of biological communities.
Global warming can influence individual physiology and the timing or distribution of species, which may change relationships among organisms in a food web. Because food webs connect species, effects on one component can influence others. Changes in these interactions, together with altered environmental conditions, can also affect ecosystem productivity, the rate at which ecosystems generate biological material.
Biologists examine how warming-related changes affect organismal physiology, seasonal timing, species distributions, food webs, and ecosystem productivity. Combining these biological responses provides information for assessing biodiversity loss and predicting ecological change. The approach connects effects observed at the organism level with consequences for populations, communities, and entire ecosystems.
Research on biological responses can show which organisms, species distributions, ecological interactions, and ecosystem functions are most affected by changing climate conditions. These findings help researchers assess biodiversity loss rather than considering temperature change alone. They also support predictions about future ecological change and identify areas where ecosystem resilience may need strengthening.
Evidence about physiological stress, altered seasonal timing, shifting species distributions, food-web effects, and changes in ecosystem productivity can guide conservation planning. By linking these responses to biodiversity loss and predicted ecological change, researchers can develop strategies intended to support ecosystem resilience. This biological context helps conservation address both individual organisms and broader ecosystem processes.