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Hello from CA

Hi NTS,
My name is Yinghai Lu. I'm a software engineer based in Bay Area and I love redwoods, both coastal redwoods and giant sequoia. Portola Redwoods State Park was my first stop. Then I focused more and more on Redwood National and Stat Parks in the north. I like to take photos during my hiking and I've connected with some of the folks here to do exploration and photo hikes. What's impressive to me is that no matter how I take the photo of them, it can never express the feeling that you get when you are actually there. So I keep coming back, keep learning from others and keep learning. My preferences of the redwood forest are the whole settings of the grove and some interesting structures of the trees. However, sometimes I do feel like searching for some outstanding giants. Along the way, I've learned a lot of history and science about the redwoods. Nice to meet you folks on the board. Here are some of photos I took during my exploration:

Coastal Redwood;
https://www.flickr.com/photos/yinghai83/sets/72157634539047105/

Giant Sequoia:
https://www.flickr.com/photos/yinghai83/sets/72157638223594604/
by yinghai
Fri Dec 19, 2014 3:13 pm
 
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Re: Trip Planning

Hi Kouta,
Recent research has been done in more 1-ha plots throughout the redwood habitats from South to North. In Redwood & Climate Change Symposium 2013, Dr. Van Pelt has given a talk which shows that some of the plots have more biomass than Rockefeller forest and Atlas Grove.


Max,

Two years ago, I made a quite extensive literature search for the most biomass-dense stands by forest type. See:
http://www.ents-bbs.org/viewtopic.php?f=144&t=4966

The Rockefeller Forest has been called the most massive forest in many sources, indeed. For it, the highest value, I found, is 4249.5 t/ha. Source:
Busing & Fujimori (2005): Biomass, production and woody detritus in an old coast redwood (Sequoia sempervirens) forest. Plant Ecology 177 : 177-188.
(The value is the mean of the two most reliable methods according to the authors ("allometric 1" and "allometric 2") and with the specific gravity of 0.38.)

However, in 2007 Sillett and Van Pelt reported 4283 t/ha for the Atlas Grove. Source:
Sillett, S. C. & Van Pelt, R. (2007): Trunk reiteration promotes epiphytes and water storage in an old-growth redwood forest canopy. Ecological Monographs , 77 (3), pp. 335–359.

Thus, the Atlas Grove seems to be the new record stand. Please correct me, if I have understood something wrong or if I have missed higher values for the Rockefeller Forest.

My literature search is certainly not exhaustive but some of my sources were already literature searches themselves.

Kouta
by yinghai
Fri Dec 19, 2014 2:44 pm
 
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Re: Old Growth Redwood Photos

Some of mine from the trip with Max to HRSP. It was a lot fun. The campground was surprisingly well occupied but we saw few people during the day hike.

Max in Rockefeller Forest
https://farm8.staticflickr.com/7478/15967520829_67ccc3fa76_z.jpg

Photographing the giant
https://farm8.staticflickr.com/7473/16136865246_ac12a94aa1_z.jpg

Seasonal pond in Bull Creek Flat. The tree in the back has a pretty convoluted trunk.
https://farm9.staticflickr.com/8646/15995478119_b4c08eb72a_z.jpg

On the trail
https://farm9.staticflickr.com/8604/16012057739_77a332d7ca_z.jpg

This one caught my eye with bright red bark standing in a very open area. We didn't go to its base to visit. Probably not very big or very tall, but just by itself.
https://farm9.staticflickr.com/8654/16209807951_19d60cb1d8_z.jpg

Another nice one. It has a smooth trunk garnished with appendages. ~15DBH.
https://farm9.staticflickr.com/8672/16212872035_a143866e47_z.jpg
by yinghai
Wed Jan 07, 2015 4:53 am
 
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Re: Old Growth Redwood Photos

Here is some of mine from last trip.

Max was in an ancient redwood grove. It is like a dinosaurs' arena...
Image

Big guy
Image
by yinghai
Mon Mar 02, 2015 1:19 pm
 
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Re: Redwood Stumps

Thanks, Mark. I found a fairly recent photo of it online. It's kind of hard to recognize.

http://ruskinkhartley.com/2013/06/30/whats-up-with-archangel/fieldbrook-stump-074/

Yinghai,

The Fieldbrook Stump was brought up in this thread last year: http://www.ents-bbs.org/viewtopic.php?f=69&t=6077

Would have loved to have seen that tree...
by yinghai
Mon Mar 09, 2015 10:56 pm
 
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Re: Backpacking Redwood National Park

It's awesome! I like the shot in the trunk!
by yinghai
Wed Apr 08, 2015 2:01 pm
 
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Re: Blue Gum Superlatives, invasive yet impressive

John,
If you are interested in eucalyptus, pick up weekend and go to Point Reyes. About 100ft into Coastal Trail, there is a grove of candelabra eucalyptus trees. They are pretty big and nice to look at.
by yinghai
Wed Apr 15, 2015 12:46 am
 
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Re: Old Growth Redwood Photos

Here is a nice urban albino redwood to which we paid a visit on our way back. It's doing well!
a.jpg
Here is the story about it:
http://news.nationalgeographic.com/news/2014/03/140319-redwood-albino-chimera-california-tree-tallest/
http://www.npr.org/2014/07/28/336123314/this-albino-redwood-tree-isnt-dead-but-it-came-close
by yinghai
Thu Apr 16, 2015 3:07 pm
 
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Re: Old Growth Redwood Photos

Good one, John. We can start with Big Basin or Portola.

Mario, one thing about the laser that is particularly interesting to me is to use laser to get the point cloud of the trunk. If the points are dense enough, 3D surface can be restored with high accuracy and volume computation can be done instantly, all in meshlab. You can even slice it up and compute the DBH at different height. However, that requires the laser to be programmable. I don't know whether the Laser 200 can do or not. It usually requires one to obtain an OEM part like S200 and program himself. Micharl Taylor did exactly that. He built a personal programmable laser turret, which is super cool!

http://www.ents-bbs.org/viewtopic.php?f=235&t=3472
by yinghai
Mon Apr 20, 2015 2:04 pm
 
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Re: New 28k SEGI in Peyrone Grove

Here is a fun tree Zane and I spotted from a trip to Calaveras. It's among a group of white fir saplings. Traveling through the saplings isn't too bad as they keep the mosquitos away.

Image
by yinghai
Fri Jun 26, 2015 12:57 am
 
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by yinghai
Wed Nov 18, 2015 2:44 am
 
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Re: More Exceptional Trees From Redwood National Park

Nice find! I agree that new 350' is rare because of Lidar. But it's still hopeful to find 20k trees. I think John and Max found a few of them over the past year. 30k on the other hand, seems to extremely hard to find.
by yinghai
Wed Jul 26, 2017 6:10 am
 
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