نتایج جستجو برای: willow clones

تعداد نتایج: 32299  

2006
CHAD S. BOYD

Willow (Salix spp.) and associated riparian shrub communities provide habitat to a wide variety of wildlife species. Because of high between-observer variability and a lack of standardized protocols, ground-based monitoring of willow abundance has proven difficult. The objective of this study was to evaluate variability associated with collection and analysis of field data for a photo-based mon...

2002
Steven D. Schaff S. Reza Pezeshki

Black willow ( Salix nigra ) uses periodic flood events for dispersal of vegetative propagules, subjecting them to periods of soaking before their deposition along the streambank. It was hypothesized that this life history trait results in optimal conditions for willow growth and survival. To test this hypothesis, a greenhouse experiment was conducted using 1.2-m-long black willow cuttings (pos...

2012

substantive issue with the paper is the low sample sizes. For example why is only data from 1 piezometer used to average discharge conditions (page 6724, L24)? However, the authors provide chemical, hydrology, isotope, and genetic data to make their case all of which seem to point in the same direction. It’s very interesting to note that while the willow zone is most efficient, the forest zone ...

1991
John K Bennett John B Carter Willy Zwaenepoel

We are currently investigating two di erent approaches to scalable shared memory Munin a distributed shared memory DSM system implemented entirely in software and Willow a true shared memory multiprocessor with extensive hardware support for scalability Munin allows parallel programs written for shared memory multiprocessors to be executed e ciently on dis tributed memory multiprocessors Unlike...

2014
Ying Mu Lan-fang Ren Zhi-li Xun Dan-dan Zhang Han Song Hai Lu Feng-lan Li Di Liu

Telomeres and telomerase have important biological functions and can protect chromosome ends. In this study, sex- and season-dependent changes in telomere length and telomerase activity in ash and willow were analyzed. A statistical analysis showed that the telomere lengths of male and female trees differed significantly (P < 0.05). In ash, the telomere lengths of female trees were shorter than...

2015
SHAGHAYEGH SOUDI KLAUS REINHOLD LEIF ENGQVIST

Ecological specialization is widely recognized as a major determinant of the emergence and maintenance of biodiversity. We studied two critical facets of specialization – local adaptation and habitat choice – in the host races of the leaf beetle Lochmaea capreae on willow and birch. Our results revealed that there is asymmetric disruptive selection for host use traits, and host races achieved d...

2015
Yumin Suh Kamil Adamczewski Kyoung Mu Lee

1. Additional Experimental Results In this section, we provide more comparative experimental results.In Section 1.1, the experimental results on the whole object classes in the Willow dataset are given. Some qualitative matching results of the Willow dataset are shown in Section 1.2. 1.1. Willow Object Dataset Under the same experimental settings explained in Section 6.2 of the main paper, we h...

2016
Jing Hou Ning Ye Zhongyuan Dong Mengzhu Lu Laigeng Li Tongming Yin

Populus (poplar) and Salix (willow) are sister genera in the Salicaceae family. In both lineages extant species are predominantly diploid. Genome analysis previously revealed that the two lineages originated from a common tetraploid ancestor. In this study, we conducted a syntenic comparison of the corresponding 19 chromosome members of the poplar and willow genomes. Our observations revealed t...

2017
Byoung-Hwan Seo Hyuck Soo Kim Saranya Kuppusamy Daniel C. W. Tsang Zeng-Yei Hseu Chaeyoung Lee

Phytoremediation is a promising technology to remediate carcass burial sites where deep soil layers are contaminated with nitrogen (N), phosphorus (P) and other potential contaminants by leachate. The current study was conducted to examine the remedial efficiency of two different woody plants, poplar (Populus euramericana) and willow (Salix alba), by employing the deep-planting technique for th...

Journal: :Ecological applications : a publication of the Ecological Society of America 2008
Danielle M Bilyeu David J Cooper N Thompson Hobbs

Excessive levels of herbivory may disturb ecosystems in ways that persist even when herbivory is moderated. These persistent changes may complicate efforts to restore ecosystems affected by herbivores. Willow (Salix spp.) communities within the northern range in Yellowstone National Park have been eliminated or degraded in many riparian areas by excessive elk (Cervus elaphus L.) browsing. Elk b...

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