本研究通过整合古植物学证据与微卫星标记 (SSR)技术，揭示了意大利半岛挪威云杉 (Picea abies)边缘种群的长期收缩模式。研究发现西南阿尔卑斯山和西北亚平宁山脉的残余种群具有独特遗传特征，等位基因丰富度 (Ar)降低约20%，有效种群大小 (Ne)低于安全阈值，为气候变化背景下森林遗传资源保护提供 ...

Eastern spruce budworm (Choristoneura fumiferana) is a native insect found in the coniferous forests of northeastern Minnesota. It feeds on and kills balsam fir and spruce trees. It primarily feeds on ...

5. Balsam fir in Lansing This Lansing balsam fir, also known as an abies balsamea, stands at 94 feet tall and almost 6 feet wide. You can find it in the southeast portion of the Oak Hill Cemetery.

Readers discuss the Trump administration’s urging a baby boom while also cutting support for children. To the Editor: Re “Would $5,000 Bonuses Spur New Baby Boom?” and “E.P.A. Poised to ...

During her final season with the Shockers, Abies had a breakout campaign averaging a near double-double of 13.0 points and 9.7 rebounds per contest. The four-time AAC Weekly Honor roll selection ...

Balsam Fir (Abies balsamea) Like quaking aspen and with a similar range, balsam fir is the most widely distributed fir in North America and the primary component of the Canadian boreal forest.

During overwintering, evergreen conifers of boreal forests must cope with freezing temperatures and high light intensities that often occur simultaneously and expose the photosynthetic apparatus to ...

2.2.2 Diameter classification On the basis of the research objectives and specific conditions of the study area, we referred to previous methods of diameter classification for fir forests (Ren et al., ...

Specifically, based on species, most commonly tree species used as Christmas trees in some regions/ countries including Douglas-fir (P. menziesii), Fraser (A. Fraseri), Noble (A. procera), balsam firs ...

Letter Published: 19 November 1966 Free Amino-acid Content in Needles of Abies balsamea and Picea mariana growing on Different Sites J. D. GAGNON Nature 212, 844 (1966) Cite this article ...