Monday, March 30, 2009

Big night?

No this isn't a Monday morning post about some wild weekend party. At least not for me. The "Big Night" is that first warm (>40F) rainy night in the spring when all of the amphibians come out of their woodland hiding places to converge on their favorite vernal pool. Here they all meet up for a once-a-year breeding event. This is one of the great facts we learned at Jessica Tenzar's talk at the Landing last Thursday. For the second year in a row Jess came to teach us about vernal pools, the animals that live in them, and what we can do to protect them. This year Jess added a discussion about her own research. Although her field methods had some folks squirming in their seats, it was very cool to learn how stable isotopes of Carbon and Nitrogen within the bodies of salamanders can actually show us exactly what they are feeding on throughout their lives.

The timing of the talk was just right. Not only is it the season for vernal pools throughout the Northeast, but we happen to be in the middle of a survey for the endangered Blue-spotted salamander near the Wapping Road Dam (see post from last week). So we are wating for that Big Night and waiting to see what we find. But the Big Night can be elusive. We had rain on the Thursday night of Jessica's talk. But it wasn't as much as predicted and no salamanders or wood frogs showed up in our survey area. So then we had our fingers crossed for the rains this weekend. Saturday night and Sunday were POURING and it was warm(ish). But still nothing. Our salmander survey expert Dan Wells tells me that it may have started raining too late on Saturday night. It usually needs to start before dusk.

So we'll keep waiting and watching.

2 comments:

kate said...

I keep waiting for the salamanders too.... It's a small world: Jessica Fahey (Tenzar) is one of my best friends! So jealous that you go to her her speak. Good luck with your "big night". -kate

kate said...

Thanks for reading! Our counts also start 4/1, we have a DMF trap as well that caught the first 2 alewife of the year this morning. Good luck with your count, I hope we all see more fish than we did last year. Next time I'm down your way I'll check out the river. -kate