December 14, 2019

Juveniles vs Adults

Here's a publication that describes why it's important to collect data on juvenile (newly metamorphosed) amphibian roadkill:

"Neglected juveniles; a call for integrating all amphibian life stages in assessments of mitigation success (and how to do it)"

https://www.sciencedirect.com/science/article/abs/pii/S0006320718316306

"While mortality at any life stage is concerning, juveniles should be of special interest when assessing road mortality and mitigation (e.g., tunnels to facilitate safe seasonal migrations) because their fate can have a disproportionate impact on population dynamics."

Posted on December 14, 2019 05:00 by truthseqr truthseqr | 0 comments | Leave a comment

December 13, 2019

Newt Survey 12/13 - North half

Coverage: North half of Alma Bridge Road, from the parking lot to the stop sign.
Time: 8:00 - 10:00 am
Rainfall: 0.0 so far today - forecast is for more this afternoon. 7.21" MTD, 10.06" YTD via Weather Cat
Vehicles: 4 trucks and 12 cars, including 2 insane speeders (Blue Tesla and Brown Maclaren)
Other: one bicyclist, one jogger
Live Newts: 0
Dead Newts: 278, about 10% fresh
Other species: (1) Sharp-tailed Snake, (2) Western Toads, 1) Tarantula sp., (1) millipede sp., (1) Jerusalem Cricket, (2) mouse sp., 1) mole sp.

Posted on December 13, 2019 21:46 by anudibranchmom anudibranchmom | 16 comments | Leave a comment

newt survey 12/08 - northern half

(posted for @joescience1)
December 8, 2019 (Sunday)

Coverage: North half of Alma Bridge Road, from the parking lot to the stop sign @ one way road section.
Time: 3:30 - 5:15 am
Rainfall: 0.0 during walk, had rained earlier in day.
Vehicles: 0 trucks and approximately 8 cars, including 1 insane speeders (Blue Porsche Macan with teen driver)
Other: approx 12 bicyclists, 8 hikers
Live Newts: 0
Dead Newts: 77, about 10% fresh

Posted on December 13, 2019 15:00 by truthseqr truthseqr | 0 comments | Leave a comment

South/Aldercroft side - 12/12/2019

Today I walked the South side, from the stop sign to Aldercroft, 12:37pm - 2:28pm. Relatively dry conditions, temperature around 70F, low clouds rolling over the hills nearby, partly cloudy on the road.

63 dead newts. No other dead species seen. No live newts or other critters seen. 10 Santa Clara County Roads trucks working clearing brush, 15 other vehicles, 9 bikes.

Weather from http://www.weathercat.net/wxraindetail.php: 0.07 inches rainfall the previous day, 0.11 inches total today.

Posted on December 13, 2019 04:52 by newtpatrol newtpatrol | 1 comments | Leave a comment

December 07, 2019

South/Aldercroft side - 12/07/2019

My first time patrolling and posting, so please let me know if I've missed anything. Oh, and please remind me where you get the rainfall amount from, so I can be consistent.

Today I walked the South side, from the stop sign to Aldercroft, 8:40am-10:50am. It rained here last night, was windy, today there are low clouds and it's close to rain but no rain, my car said 64F outside.

77 dead newts, 1 dead frog. There were 3 that I thought were salamanders, but @truthseqr says that they're actually newts whose outer skin has gone.

No live newts or other critters seen. 18 vehicles, 2 joggers and a bicyclist passed by. I swear the maples are significantly more vivid yellow this year.

Weather from http://www.weathercat.net/wxraindetail.php: 0.45 inches rainfall the previous day, 0.32 inches total today.

~ Stacie

Posted on December 07, 2019 23:27 by newtpatrol newtpatrol | 3 comments | Leave a comment

December 06, 2019

Newt survey - North side, Wednesday 12/04

December 4, 2019 (Wednesday) 9:30 am – 11:30 pm
About a week since the rain started.
During the survey it was drizzling part of the time. I documented 101 dead newts, some were fresh, some have been there for a few days, but since I only saw one the previous time, I documented them all.
Other roadkills: one toad, one other amphibian, one millipede. I saw only one live newt, but it wasn't crossing the road, it was under a log (I haven't added it to the live newt project).
Coverage: north part - Jones trailhead to the stop sign (37.187875, -121.986516) plus spot-checked the Jones Trail trailhead.
Rainfall: (MTD: 2.73 in; YTD: 6.21 in) The weather was cold and wet, drizzle.
Traffic: Light traffic. Five gravel trucks, two maintenance trucks, 16 cars. The county parks truck was clearing the road, probably removing some more dead newts.

Posted on December 06, 2019 19:44 by merav merav | 0 comments | Leave a comment

December 05, 2019

newt survey 12/04 - southern half

107 dead newts, 3 live newts.
December 4, 2019 (Wednesday) 11:30am-1:30pm
Weather: Had just finished raining. Overcast and 53F.
Other roadkill: 1 Western Toad, 1 California Slender Salamander, 1 Western Fence Lizard, 1 (Bull?)frog.
Coverage: Aldercroft Heights Road intersection to just after the big Soda Springs road bend (37°11'12.6"N 121°59'09.5"W).
Rainfall: MTD: 2.73 in; YTD: 6.21 in
Traffic: Light. 13 vehicles, half of which were local traffic (saw them entering/exiting spur roads).

Today there was a section just south of the Soda Springs bend that had a bunch of tiny baby newts, both alive (the only live ones I saw today) and flattened. Here's a very cute live one being moved off the road to newt another day: https://www.inaturalist.org/observations/36368929
Today again all the living newts were heading away from the reservoir.

Posted on December 05, 2019 05:31 by sea-kangaroo sea-kangaroo | 2 comments | Leave a comment

December 02, 2019

newt survey 11/30 - southern half

4 dead newts, 4 live newts.
November 30, 2019 (Saturday) 3pm-5pm
Weather: Light intermittent drizzle while I walked. Chilly but not really cold (high 40s-low 50s).
Other roadkill: None.
Coverage: Aldercroft Heights Road intersection to just after the big Soda Springs road bend (37°11'07.5"N 121°59'07.8"W).
Rainfall: (MTD: 3.40 in; YTD: 3.48 in)
Traffic: Light traffic; around 20 cars or so.

The dead newts were all fresh. All of the alive newts and most of the dead newts I saw were heading east, away from the reservoir. They were also concentrated in two areas (blue pins):

Talked briefly to a couple of friendly Midpen Open Space rangers who pulled over to check I was okay. They knew there was a "newt person" who'd been surveying (one of them apparently met Anne once), and I told them there'd be a bunch of people surveying this year.

Posted on December 02, 2019 01:20 by sea-kangaroo sea-kangaroo | 3 comments | Leave a comment

November 28, 2019

Newt survey - 11/27 - after the first rain

1 dead newt, 0 live newts.
November 27, 2019 (Wednesday) 10:30 am – 12:20 pm
The first big rain event has just started the day before. It started in the afternoon, and continued through the night. During the survey there was little to no drizzle. I only found 1 fresh dead newt, probably died this morning.
No other roadkills.
Coverage: Vulcan quarry to the stop sign (37.187875, -121.986516) plus spot-checked the Jones Trail trailhead.
Rainfall: (MTD: 1.74 in; YTD: 1.8 in) The weather was cold and wet, light drizzle.
Traffic: Light traffic. Two gravel trucks, two maintenance trucks, 16 cars, and one bike.

Posted on November 28, 2019 06:17 by merav merav | 0 comments | Leave a comment

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