نتایج جستجو برای: woody species

تعداد نتایج: 553225  

2008
T. B. Harrington A. W. Ezell J. L. Yeiser

Several formulations of glyphosate were applied with or without imazapyr in June and October 2000 at sites located in Georgia, M ississippi, and Texas. The objective of the research was to compare control of woody species between experimental and conventional formulations of glyphosate with or without imazapyr. Percentage change in total length of woody stems was evaluated immediately before tr...

2009
Lars A. Brudvig

Recovering biodiversity is a common goal during restoration; however, for many ecosystems, it is not well understood how restoration influences species diversity across space and time. I examined understory species diversity and composition after woody encroachment removal in a large-scale savanna restoration experiment in central Iowa, United States. Over a 4-year time series, restoration had ...

2010
Gregory Gilbert Gregory S. Gilbert Elizabeth Howard Barbara Ayala-Orozco Martha Bonilla-Moheno Justin Cummings Suzanne Langridge Ingrid M. Parker Jae Pasari Daniella Schweizer Sarah Swope

Question: How do the diversity, size structure, and spatial pattern of woody species in a temperate (Mediterranean climate) forest compare to temperate and tropical forests? Location: Mixed evergreen coastal forest in the Santa Cruz Mountains, California, USA. Methods: We mapped, tagged, identified, and measured all woody stems ( 1 cm diameter) in a 6-ha forest plot, following Center for Tropic...

2013
Ejaz Ahmed Muhammad Arshad Abdul Saboor Rahmatullah Qureshi Ghazala Mustafa Shumaila Sadiq Sunbal Khalil Chaudhari

BACKGROUND This paper reflects the empirical findings of an ethnobotanical survey which was undertaken in Patriata (New Murree) of district Rawalpindi in Pakistan. The aims and objectives of the study were to document indigenous knowledge of plants particularly of medicinal, veterinary, fruit, vegetable, fodder, fuel etc. METHODS For this purpose, the whole area was surveyed for documenting f...

2013
Katie Frerker Grégory Sonnier Donald M. Waller

Ungulate browsing affects many plant species, shifting patterns of relative abundance, plant community diversity, and ecosystem processes. Despite the strength and diversity of ungulate impacts, we lack comprehensive methods and a unified network for tracking and comparing ungulate impacts across the Great Lakes region. The Great Lakes Network Office (GLN) of the National Park Service has ident...

2014
Gilbert Neuner

This report provides a brief review of key findings related to frost resistance in alpine woody plant species, summarizes data on their frost resistance, highlights the importance of freeze avoidance mechanisms, and indicates areas of future research. Freezing temperatures are possible throughout the whole growing period in the alpine life zone. Frost severity, comprised of both intensity and d...

Journal: :Theoretical population biology 2007
E Gilad M Shachak E Meron

A mathematical model for plant communities in water-limited systems is introduced and applied to a mixed woody-herbaceous community. Two feedbacks between biomass and water are found to be of crucial importance for understanding woody-herbaceous interactions: water uptake by plants' roots and increased water infiltration at vegetation patches. The former acts to increase interspecific competiti...

2012
En-Rong Yan Rubén Milla Lonnie W. Aarssen

Leafing intensity, i.e. the number of leaves per unit of stem volume or mass, is a common developmental correlate of leaf size. However, the ecological significance and the functional implications of variation in leafing intensity, other than its relation to leaf size, are unknown. Here, we explore its relationships with plant height, growth form, leaf size, and leaf habit to test a series of c...

Journal: :Physiologia plantarum 2014
Valérie Legué Adeline Rigal Rishikesh P Bhalerao

Adventitious rooting is an essential step in the vegetative propagation of economically important horticultural and woody species. Populus has emerged as an experimental model for studying processes that are important in tree growth and development. It is highly useful for molecular genetic analysis of adventitious roots in trees. In this short review, we will highlight the recent progress made...

ارزانی, حسین, افتخاری, علیرضا, عبدالهی, جلال, فرحپور, مهدی,

Species which were grazed by livestock and wildlife in range sites and the portion taken by each animal were the subject of this study. Two sites occupied with Scariola orientalis (Boiss.) Sojak and Artemisia sieberi Besser and another with Aellenia subaphyla (C.A.Mey.)Aellen and Artemisia sieberi were selected for the study. These sites were already established by Yazd Research Center for Agri...

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