Results 51 to 60 of about 54,771 (221)

Trees and Shrubs [PDF]

Nature, 1958
The Book of Flowering Trees and Shrubs By Stanley B. Whitehead. Pp. 244 + 63 plates in colour. (London and New York: Frederick Warne and Co., Ltd., 1956.) 15s. net.
openaire   +2 more sources

Direct and indirect effects of environmental factors, spatial constraints, and functional traits on shaping the plant diversity of montane forests

Ecology and Evolution, 2020
Understanding the relative importance of the factors driving the patterns of biodiversity is a key research topic in community ecology and biogeography. However, the main drivers of plant species diversity in montane forests are still not clear.
Ting Li, Qinli Xiong, Peng Luo, Yubo Zhang, Xiaodong Gu, Bo Lin   +5 more
doaj   +1 more source

Divergent response of Pinus pumila growth to climate warming at different latitudes and in different simulation predictions

Frontiers in Forests and Global Change, 2022
Understanding the responses of shrub growth to climate changes is key to accurately predicting the dynamic changes in the boreal forest ecosystem. A shrub-ring network based on 12 sites was established to explore the response of Pinus pumila growth to ...
Jingwen Yang, Jingwen Yang, Jingwen Yang, Qiuliang Zhang, Wenqi Song, Yang An, Xiaochun Wang, Xiaochun Wang   +7 more
doaj   +1 more source

Reactive glass and vegetation patterns [PDF]

, 2002
The formation of vegetation patterns in the arid and the semi-arid climatic zones is studied. Threshold for the biomass of the perennial flora is shown to be a relevant factor, leading to a frozen disordered patterns in the arid zone. In this ``glassy'' state, vegetation appears as a singular plant spots separated by irregular distances, and an ...
arxiv   +1 more source

Insights about the deleterious impact of a carbamate pesticide on some metabolic immune and antioxidant functions and a focus on the protective ability of a Saharan shrub and its anti-edematous property

Open Chemistry
In the Algerian desert, individuals often enjoy a soothing cup of herbal tea made from Ephedra alata Decne before bedtime; this aids in their relaxation.
Khattabi Latifa, Khaldi Taha, Bahri Laid, Mokhtari Mohamed Badreddine, Bouhenna Mustapha Mounir, Temime Asma, Boural Hasna, Bouhedjar Khalid, Hemida Houari, Atoki Ayomide Victor, Messaoudi Mohammed   +10 more
doaj   +1 more source

Une opérade anticyclique sur les arbustes [PDF]

arXiv, 2009
We define new combinatorial objects, called shrubs, such that forests of rooted trees are shrubs. We then introduce a structure of operad on shrubs. We show that this operad is contained in the Zinbiel operad, by using the inclusion of Zinbiel in the operad of moulds.
arxiv  

Comparação de métodos para a observação de fungos micorrízicos arbusculares e endofíticos do tipo dark septate em espécies nativas de Cerrado Comparision of methods to visualise arbuscular mycorrhizal and dark septate endophytic fungi in native Cerrado species

Revista Brasileira de Ciência do Solo, 2008
As espécies vegetais de Cerrado sensu stricto apresentam estratégias adaptativas às condições edáficas e climáticas de altos investimentos em fotoassimilados, nutrientes e água para sua estruturação.
Kelly da Silva Coutinho Detmann, Marina Neves Delgado, Vitor Paiva Alcoforado Rebello, Tiago de Souza Leite, Aristéa Alves Azevedo, Maria Catarina Megumi Kasuya, Andrea Miyasaka de Almeida   +6 more
doaj   +1 more source

Effects of salinity, organic acids and alkalinity on the growth of calcite spherulites: Implications for evaporitic lacustrine sedimentation

The Depositional Record, 2022
Lacustrine non‐skeletal carbonates exhibit a diversity of petrographies due to interactions between physico‐chemical and biologically influenced mechanisms. Despite the suggestion that evaporative concentration was involved in the formation of spherulite
Ramon Mercedes‐Martín, Ashit Rao, Mike Rogerson, Mónica Sánchez‐Román   +3 more
doaj   +1 more source

Bayesian Inference of a Finite Population Mean Under Length-Biased Sampling [PDF]

arXiv, 2019
We present a robust Bayesian method to analyze forestry data when samples are selected with probability proportional to length from a finite population of unknown size. Specifically, we use Bayesian predictive inference to estimate the finite population mean of shrub widths in a limestone quarry dominated by re-growth of mountain mahogany.
arxiv  

Tree-depth and Vertex-minors [PDF]

arXiv, 2014
In a recent paper, Kwon and Oum claim that every graph of bounded rank-width is a pivot-minor of a graph of bounded tree-width (while the converse has been known true already before). We study the analogous questions for "depth" parameters of graphs, namely for the tree-depth and related new shrub-depth.
arxiv