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Saturday, December 23, 2023

(Draft: still working on my tree list) A curated guide to tree species selection for which trees will thrive most in a warming climate (climate suitability and drought tollerance)

 Small sized trees:

  • American hornbeam Hardiness Zone (HZ): 3-9    Lifespan (LS): 50-150 (years)

  • Serviceberry  HZ: 2-8   LS: 30-40

  • Redbud HZ: 4-9   LS: 20-30

  • Hawthorn HZ: 4-8 LS: 175-400

  • Trident Maple HZ: 5-9 LS: 50-100

  • Sourwood HZ: 5-9 LS: 125-175

  • Sassafras HZ: 4-9 LS: 20-30


Medium sized trees: 

  • Lacebark Elm HZ: 4-9 LS: 50-150

  • Pagoda tree HZ: 4-8 LS: 30-40

  • Black gum, Tupelo HZ: 3-9 LS: 150-300

  • Goldenrain tree HZ: 5-9 LS: 50 

  • Hophornbeam HZ: 3-9 LS:  100-150

  • Miyabe Maple HZ:  3-7/8 LS: 80

  • Red Buckeye HZ: 4-8 LS: 250-300


Large sized trees:

  • Giant Sequoia HZ: 3-9 LS: >3,000

  • Coastal Redwood HZ:7-9 LS: >2,000

  • Dawn redwood HZ: 3-8 LS: 100-400

  • Bald Cyprus HZ: 4-9/10 LS: 600-1200

  • Ginkgo biloba (Male) HZ: 2-8 LS: >1,000

  • Sweetgum HZ: 5-9 LS: 100-400

  • Tulip tree HZ: 4-9 LS: 100-300

  • Oaks:

    • Burr Oak HZ: 3-8 LS: 100-1,000

    • White Oak HZ: 3-9 LS: 200-600

    • Southern Red Oak HZ: 6-10 LS: 150-350

    • Sawtooth Oak HZ: 5-9 LS: 80-120

  • Hackberry   HZ: 2-9 LS: 150-200

  • Red maple   HZ: 3-9 LS: 150

  • Atlas Cedar   HZ: 6-9 LS: 150-500

  • Eastern White Pine   HZ: 3-8 LS: 200-450

  • Southern Magnolia   HZ: 6-10 LS: 80-120

  • London Planetree   HZ: 5-9 LS: 300

  • American Linden   HZ: 4-8 LS: 100-200

  • Honey locust   HZ: 3-8 LS: 120-125

  • Black walnut   HZ: 4-9 LS: >200













The American Hornbeam is a small native hardwood tree in the beech family. American Hornbeams grow well in shade and have an interesting bark texture. 


American Hornbeam Trees For Sale | The Tree Center™

The Serviceberry is a small tree which grows well in zones two through eight. 



Serviceberry- Favorite Tree of Gardeners And Birdwatchers | What Grows ...





The Redbud is a native tree which grows well in zones four through nine. 





Eastern Redbud











The Lacebark Elm (Chinese Elm) is my number one choice for a medium sized plot. This deciduous tree grows 30-60 ft tall and equally wide- is hardy: tolerates salt, sand, air pollution, damage to branches in urban settings, and drought and heat (zones 4-9). A very pretty tree, the Lacebark elm has interesting and colorful bark texture year round as well as iconic Elm leaves (figure 1). There are several varieties all of which are unaffected by the Dutch Elm disease (no spraying required, more resistant than the Zelkova Elm). 


Figure 1. Lacebark Elm profile and closeup of leaves. Ulmus parvifolia (Chinese Elm, Drake Elm, Lacebark Elm) | North ...What grows there?: The Best Lacebark Elms For Your Area


The Pagoda tree is originates from Japan. It is a long lived tree with bean-like fruit. New Haven plants them as shade trees and there is one on the Yale Nature Walk. Pagoda trees reach fifty to seventy five feet tall and is categorized by the Urban Resource Initiative as a medium sized tree (figure 2).

Figure 5. Japanese Pagoda tree. Japanese Pagoda Tree styphnolobium Japonicum 20 Seeds | Etsy


The Blackgum (Tupelo) is long lived, native, grows well in zones three through nine, and has a tap root. The Blackgum’s fruit supports many animal species and the tree itself is a habitat for birds. The Tupelo or Black Gum Tree (Nyssa Sylvatica) is indigenous to North ...






































Giant Sequoia: the largest tree on earth. It’s native range is exclusively in small groves in the Western United states, but careful seed collection and cultivation has lead to individual specimens all over the globe (figure 2). Needle Evergreen tree through zone 8. 

Figure 2. Giant Sequoia (Yale Nature Walk photo).



Dawn Redwoods are extremely easy and low maintenance trees to grow. They work well for shade, wind, and noise screening (figure 3). 

Figure 3. Dawn Redwoods planted on a city street in Baltimore MD. 



The ginkgo (figure 4) is the only tree with fan shaped leaves and is extremely drought tolerant. The leaves turn yellow in Autumn and can be stepped for tea. Male ginkgo fruit is a round seed pod similar to the Sycamore and London Plane trees. Ginkgos live a very long time and have a recognisable bark pattern.

Figure 4. Ginkgo trees. Maidenhair Tree (Ginkgo biloba): Aspen Tree Expert Co., Inc.


The Bald Cypress is a distant relative to the Redwood (figure 6) and native to the East coast. It is a deciduous conifer with pyramidal shape. The main differences from the Redwood are that Balding Cyprus reach one hundred twenty feet verses one hundred sixty feet or more. Bald Cypress have alternating groups of needles which are .75in in length. Zones 4-9 great for wildlife too. 

Figure 6. Bald Cypress tree. Bald Cypress Tree Pictures, Facts on Bald Cypress Trees









The sweetgum is a native tree with star shaped leaves and develops seeds in spiky round pods (figure 7).American Sweet Gum Tree: An Attractive Plant With Spiky Fruits - Owlcation

Figure 7. Sweetgum leaves and pods. 



The Burr Oak is my number one choice for a large deciduous tree because it is extremely heat and drought resistant (figure 8). Burr Oaks can grow up to eighty feet tall and produce the largest acorns of any oak species. Burr Oaks are now being planted in New Haven as street trees through the Urban Resource Initiative. 

Figure 8. Burr Oak. Bur Oak Tree | Bur oak tree, Oak tree pictures, Oak tree







The White Oak is the state tree of Connecticut and the premier hardwood which was used in boat building. Bark of the white oak is a light gray color and the leaves have rounded edges. White Oaks are also very drought resistant through hardiness zone 9; the native range encompasses the entire east coast figure 9. 

Figure 9. White Oak, Union College’s West Beach. 


The Red Oak is another native oak species to the East Coast (figure 10). Southern Red Oaks have a slightly larger range into zones  9 and 10. 

Figure 10. Southern Red Oak. Southern Red Oak - Urban Forest Dweller






The Atlas cedar, native to Morocco but is planted worldwide as a tree in ornamental landscapes (figure 11). An evergreen, the blue-green needles add distinctive color to outdoor spaces year round. Zones six through nine. 

Figure 11. Atlas cedar. 8.75-Gallon Blue Atlas Cedar Feature Tree (L4673) at Lowes.com


The Eastern White Pine can grow to eighty feet tall in zones three through eight (figure 1). 

Figure . Eastern white pines reach an impressive height and branch all around the trunk. Eastern White Pine (Pinus strobus), Tree Facts, Habitat, Pictures


The Southern Magnolia is an evergreen with glossy leaves (Figure ). 


















Monday, February 28, 2022

U-sustain week 8!

 





Hey, welcome to week eight. Today we are electing our new E-board! First though we have some climate news. 
    A new study showed models of how dissolved oxygen will change in coming years. The letters on each figure correspond to depths. A is the epipelagic zone 0-200m, B mesopelagic 200-1000m, and C bathypelagic zone 1000-3300m. Dissolved oxygen decreases most in the mesopelagic zone which is also the depth of most fisheries. By. 2080 there is a risk of 70% decrease in dissolved O2 in the mesopelagic zone. The second chart shows how dissolved O2 levels change in the ocean at these depths. Again in the mesopelagic zone there is the greatest negative change of dissolved O2 which is a concern for the fish populations in those zones. 



Some great news: There are an estimated 9200 more tree species! This is really exciting as it shows species diversity is greater than we knew. %40 of these unidentified trees are in South America. This is encouraging that there are far more species yet to discover, but this makes them even more difficult to protect.     

One newly discovered species was named Uvariopsis dicaprio after Leonard DiCaprio a film a star and climate activist. Using social media petitions, DiCaprio successfully stoped deforestation in Cameroon by the government. The photo on the right is a tree in the same genus as Uvariopsis dicaprio. 

https://www.sciencedaily.com/releases/2022/01/220131153239.htm 

Thanks to Bethany and Hailey for the first two slides. Thanks for reading! 

Wednesday, January 26, 2022

U-sustain week 4

 

Welcome to our first in person full body meeting this term! We have lots to discuss including elections, Wold display cases, and earth day event planning. 

First the news:


  • Florida manatees are being threatened with loss of habitat and sea grass to forage
  • In 2021 there were 1100 deaths many from starvation
    • there are now 7500 individuals in the wild
    • most years there are only about ~500 deaths
  • Foraging becomes even harder in winter when manatees need to eat more to stay warm
  • Algae blooms are killing the local sea grass and at Indian River Lagoon (bottom left picture) there has been a 58% loss in sea grass since 2011
    • sea grass also happens to be an endangered species too
  • Recently there has been an effort to cultivate sea grass using divers and cages
    • this can be really labor intensive, but has shown to be successful at reintroducing seagrass

  • New research tool which can sample animal DNA from the air
  • this can be used to track animal movements especially for species hard to access
    • other tracking methods include capturing and placing a tag or setting up camera traps
  • tests are being preformed in Zoos as the technology is still in development. 
  • The animals pictured are dingos and the tube at the bottom of the photo is the air sampling device.
Thanks for reading!

Monday, September 6, 2021

Favorite Oak trees

 This post shares photos of my favorite oak trees in New Haven during the peak of summer. The goal is to show what the trees look like their historical location in the neighborhood. Finding camera angles that captured the whole tree and created perspective with closeby houses was the greatest challenge of the project. 


The tour begins with the largest tree, a white oak in Farnam memorial gardens. This tree is featured in the Yale nature walk. Here is the link: https://naturewalk.yale.edu/trees/fagaceae/quercus-alba/white-oak-98

 


edit 10/5/21- White Oak at Union college: 





The following trees are individuals of the pin oak species. 

Lawrence st:

Bark close up of "young" tree

Lawrence st:

Everett st:

Livingston st:


Edgerton park:

Edgehill st:



St Ronan st: my favorite three trees

A view of the trees from where the piano is setup.


The sugar maple in the backyard lost two large branches in a storm. Here is a picture of the tree and the point where the branches were ripped off. 


Hope you enjoyed the oak tour, please check back for more posts about conservation and environmental topics. Thank you for reading!