Biogeography Archives - Geography Realm

What is the Difference Between a Crow and a Raven

November 4, 2023November 4, 2023 by Caitlin Dempsey

Here are some ways you can determine the difference between the common raven (Corvus corax) and the American crow (Corvus brachyrhynchos).

Painted lady (Vanessa cardui). Image: NPS, public domain.

These Butterflies Have the Longest Known Migration Route

April 12, 2023April 12, 2023 by Caitlin Dempsey

Each fall, Painted Lady butterflies (Vanessa cardui) migrate from Europe to subtropical Africa. Individuals can travel as far as 4,000 kilometers.

Gray clouds hang in the sky over vegetation dotting the surface of the dune field. Bits of pink clouds appear below the gray and a hint of a rainbow appears in the sky.

Biogeography Definitions

July 14, 2023July 14, 2022 by Caitlin Dempsey

Here are some common terms in biogeography, a field of geography that studies the distribution of species.

Cover of Michael Hannah's book "Extinctions: Living and Dying in the Margin of Error".

Review | Extinctions: Living and Dying in the Margin of Error

July 20, 2023September 7, 2021 by G.T. Dempsey

This book sets out, in some nine chapters, both the ‘turbulent’ journey of that one species living 3.7 billion years ago to the 8.7 million today and the human activity threatening that biodiversity.

Introduction to Wildlife Corridors

August 23, 2023August 27, 2021 by Elizabeth Borneman

Wildlife corridors are overpasses and underpasses that connect natural regions and provide safe transit for migratory animals through human infrastructure.