Author Archives: Margaret Kosmala

About Margaret Kosmala

I am an ecologist exploring the complex dynamics of plant and animal systems. I am especially interested in understanding how species communities change over time and how humans impact them.

Spring Challenge first results

Having all the pairs of spring images classified means I can now analyze them! In particular, I’m using these images to get a best estimate for the “start of spring” and the “end of spring”. These are metrics that are … Continue reading

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Friday favorites: North Carolina spring

Trees are putting out leaves at Alligator River National Wildlife Refuge in North Carolina.

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Friday favorites: Subtle spring

Our lunar PhenoCam helps us track seasons on the moon. Because of the minor tilt in the moon’s axis (only about 1.5 degrees), seasonal change on the moon is subtle and hard to measure with on-the-ground methods.

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Friday favorites: The still waters of early spring

The still waters of Lake Crescent in early spring reflect the surrounding hills and mountains in Olympic National Park, Washington.

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Friday favorites: Michigan spring

With all the different colors, it might look like fall. But this is a spring picture taken at the University of Michigan Biological Station in May of last year. Note the yellowish color of the new leaves as they unfold.

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Friday favorites: First leaves

Spring leaves start emerging at Bartlett Forest in New Hampshire.

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Friday favorites: Green Alaska

Boreal tundra greens up in Lake Clark National Park and Preserve in Alaska.

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