Nest Predation and Nesting Success for a Wood Turtle (Glyptemys insculpta) Population in Northeastern Minnesota – Maria Berkeland


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  1. Ricky Spencer on August 6, 2020 at 9:57 am

    Great work. Multiple years of data are really important to determine whether nest predators are a significant problem.

    We have major fox issues in Australia.

    I ran some basic models with our data and it takes about 6 years to determine if nest predators are problematic for a population. One year of best predation rates dropping below 75% is enough to sustain recruitment

    Are badgers native to that area? I worked a bit in Iowa/illinois and we didn’t see them

    Good work

    • Maria on August 17, 2020 at 10:20 am

      Super interesting!

      Badgers are native to Minnesota, but they are not super common in the north. They like the sandy areas that are quite common along this river.

  2. Alex Scholp on August 6, 2020 at 5:56 pm

    Why don’t you dig up the nest and incubate the eggs so there can be no predation from animals? I have been raising wood turtles for 30 years and have only needed to use raccoon traps to keep them away from the nest until I dig the eggs up and put them in incubators. No problem! In the last two years, I have hatched 100 wood turtle hatchlings.

  3. Walter E. Meshaka Jr. on August 13, 2020 at 10:58 am

    An interesting question and a good study design. Interesting to me because of colonization. Seems as though there is a reward for trying novel structurally suitable nesting sites. I guess next question to me is what is the tipping point before predators, and which ones first, find it.

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