Right: The success of the rapidly-growing cottonwood is evident in the National Register of Champion Trees, including this champion black cottonwood
Structural dynamics of riparian forests along a black cottonwood
Mortality and age of black cottonwood
stands along diverted and undiverted streams in the eastern Sierra Nevada, California.
Black Bears (Ursus americanus) in southeastern Alaska forage intensively on seed pods and male and female catkins of Black Cottonwood
(Populus trichocarpa), often breaking many branches from the trees.
A half-acre park that boasts everything from a wetlands studded with Oregon ash and black cottonwood
to a first-of-its-kind-in-the-nation play structure is open for climbing and exploring in east Springfield.
Decoded Notable genomes unveiled this year included those of the insect-gut bacterium Carsonella ruddii, the smallest yet (170: 285); the black cottonwood
, the first from a tree (170; 180); and the western honeybee, the first from an ultrasocial animal with a strictly stratified society (170: 275 *).
The black cottonwood
, the largest American poplar, has more than 45,000 protein-encoded genes written into its DNA - more than any other living thing with a sequenced genome.
The clones chosen included a hybrid cross between native black cottonwood
(Populus trichocarpa) (T) (western Washington) and eastern cottonwood (P.
Reforestation crews will remove invasive plant species and replant the stream banks with native plant species such as Western Redcedar, Swamp Rose, Pacific Ninebark, Black Cottonwood
, Snowberry and Oregon Ash.
Other related trees include Populus trichocarpa, black cottonwood
; Populus deltoides, Eastern cottonwood; Populus balsamifer, Canadian poplar; and Populus grandidentata, known as Canadian poplar or big tooth poplar.
I test the hypothesis that the changes in density (in stems per hectare) of Sitka spruce (Picea sitchensis [Bong.] Carr.), western hemlock (Tsuga heterophylla [Raf.] Sarg.), and black cottonwood
(Populus trichocarpa Torr.
The tiny saplings I saw--redosier dogwood, red alder, black cottonwood
, sitka spruce and western redcedar among others--will one day make up another dense riparian forest, similar to Squalicum Creek, where salmon can thrive.