Category Archives: Park Ranger

Park Ranger

Invasive Species: How They Affect the Environment

Invasive Species: How They Affect the Environment
One consequence of globalization is that in addition to people and products moving across the globe, wildlife has been transported as well. This practice of transporting animals from their native regions to new areas dates back thousands of years. The Roman Empire frequently brought back animals from foreign lands to use for entertainment in the…
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Birds as Environmental Indicators

Birds as Environmental Indicators
Humans have invented a variety of instruments to monitor the health of ecosystems.  For example, to examine water quality in a wetland, an environmental scientist may use a sensor to measure dissolved oxygen in the water or perform chemical assays in the lab to examine heavy metals in the soil. However, in some cases we…
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Dendrochronology: How Tree Rings Reveal Environmental History

Dendrochronology: How Tree Rings Reveal Environmental History
Dendrochronology is the scientific analysis of tree-ring patterns to date wood samples and reconstruct past environmental conditions. Students from archaeology, climate science, chemistry, and forestry use dendrochronology in their research. Tree rings reflect annual growth influenced by climate, enabling scientists to date artifacts, calibrate radiocarbon testing, and study historical climate patterns spanning thousands of years.…
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