نتایج جستجو برای: sapling

تعداد نتایج: 572  

2017
Bettina Ohse Carolin Seele Frédéric Holzwarth Christian Wirth

Browsing of tree saplings by deer hampers forest regeneration in mixed forests across Europe and North America. It is well known that tree species are differentially affected by deer browsing, but little is known about how different facets of diversity, such as species richness, identity, and composition, affect browsing intensity at different spatial scales. Using forest inventory data from th...

1997
D G. Oreshkin J P. Skovsgaard Jerome K. Vanclay D. G. Oreshkin

A new method is proposed for estimating vitality or growth potential for saplings of Scots pine (Pinus sylvestris L.), based on height, diameter and height increment. A two-stage process was used to establish the vitality index. The logarithms of height, diameter and height increment were regressed against age, to adjust for the wide range of ages present in our data (c. 10,000 saplings with ag...

2006
DANIEL D. KNEESHAW RICHARD K. KOBE CHRISTIAN MESSIER

DANIEL D. KNEESHAW, RICHARD K. KOBE†, K. DAVID COATES‡ and CHRISTIAN MESSIER Groupe de Recherche en Écologie Forestière Interuniversitaire, Université du Québec à Montréal, C.P. 8888, Succ. Centre-ville, Montréal, Québec, H3C 3P8, Canada, † Department of Forestry, Natural Resources Building, Michigan State University, East Lansing, MI 48824–1222 USA, and ‡ British Columbia Forest Service, Fores...

Journal: :Forest Ecology and Management 2021

In a context of growing demands for wood and derived products, plantations exotic tree species have globally increased. Fast growth high productivity made Eucalyptus one the most successful genus around world. Nevertheless, this is often associated with negative ecological impacts on biodiversity ecosystem functioning risk expansion considered major threat. globulus planted in Portugal, but com...

Journal: :Frontiers in Ecology and Evolution 2023

Introduction Large wildfires were historically absent in the forests of Tierra del Fuego, southern Argentina. This has changed recent decades as humans have increased ignition sources, and warmer, drier periods fueled large, severe wildfires. As a result its location at an extreme latitude, Fuego very low tree species diversity. One region's dominant species, Nothofagus antarctica , is believed...

Journal: :Forest Ecology and Management 2021

Group selection is one potential tool in contemporary, uneven-aged silviculture for mitigating increased dominance by shade-tolerant species while continuing to meet stocking goals and harvest quotas. However, recent experimental group-selection openings northern hardwood forests on some sites the Upper Great Lakes region have failed management of tree diversity timely natural regeneration. Few...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید