scholarly journals Competition and Climate Affects US Hardwood-Forest Tree Mortality

2013 ◽  
Vol 59 (4) ◽  
pp. 416-430 ◽  
Author(s):  
Daniel A. Yaussy ◽  
Louis R. Iverson ◽  
Stephen N. Matthews
Keyword(s):  
Tree Mortality ◽  
Forest Tree ◽  
Hardwood Forest

Forest vulnerability and tree mortality in the Mediterranean: Impacts and Opportunities

2020 ◽  
Author(s):  
Tamir Klein
Keyword(s):  
Tree Mortality ◽  
Niche Partitioning ◽  
Common Garden ◽  
Fruit Trees ◽  
Forest Tree ◽  
Aleppo Pine ◽  
Mediterranean Forests ◽  
Mortality Pattern ◽  
Key Species ◽  
The Mediterranean

<p>The Mediterranean basin is a mosaic of human and natural landscapes, many of which are important forests and woodlands. Among global biomes, it has been under the longest anthropogenic stress, and today, in addition to the ongoing warming, it experiences drying. In my talk I will give examples from new research on the impacts of these processes on Mediterranean forests, as well as opportunities for increasing their sustainability under intensifying change.</p><p>Aleppo pine is perhaps the single most important forest tree species for the region, and has been grown for decades in common garden plots of provenances from around the region. Forest scientists from Spain, Italy, Greece and Israel, teamed up to synthesize the results of these provenance trials. Together, we produced the temperature and precipitation growth sensitivity profiles for Aleppo pine. Next, these profiles were applied on future climate maps, to show the potential expansion of this key species northward, as well as its extinction in many southern locations. In a seven decades-long tree mortality study across Israel, this mortality pattern is already occurring, driven by hotter and longer drought periods.</p><p>My current research is focused on finding new avenues to ensure the long-term existence of forests and trees in the Mediterranean. Examples include: (1) Mixed forests, with native broadleaf and conifer species coexisting, have high resilience, thanks to interspecific niche partitioning; (2) Native fruit trees have higher drought resistance than their cultivated relatives, and should be protected and integrated into local agriculture; (3) Native savannah trees from the southern fringes of the region are becoming more important, and offer new resilience strategies; and (4) Variations among Aleppo pine ecotypes give hope for the future suitability of this species across the Mediterranean.</p>

scholarly journals Widespread Amazon forest tree mortality from a single cross-basin squall line event

2010 ◽  
Vol 37 (16) ◽  
pp. n/a-n/a ◽  
Author(s):  
Robinson I. Negrón-Juárez ◽  
Jeffrey Q. Chambers ◽  
Giuliano Guimaraes ◽  
Hongcheng Zeng ◽  
Carlos F. M. Raupp ◽  
...  
Keyword(s):  
Tree Mortality ◽  
Forest Tree ◽  
Squall Line ◽  
Amazon Forest ◽  
Single Cross

scholarly journals Impacts of drought on tree mortality and growth in a mixed hardwood forest

1994 ◽  
Vol 5 (2) ◽  
pp. 229-236 ◽  
Author(s):  
K.J. Elliott ◽  
W.T. Swank
Keyword(s):  
Tree Mortality ◽  
Hardwood Forest

Gypsy Moth on a New Frontier: Forest Tree Defoliation and Mortality

1987 ◽  
Vol 4 (3) ◽  
pp. 128-133 ◽  
Author(s):  
Owen W. Herrick ◽  
David A. Gansner
Keyword(s):  
Gypsy Moth ◽  
Tree Mortality ◽  
Forest Tree ◽  
Tree Defoliation ◽  
Central Pennsylvania ◽  
New Frontier ◽  
Value Loss ◽  
Regional Estimates ◽  
Average Loss ◽  
Potential Impact

Abstract The gypsy moth infestation in central Pennsylvania has been closely monitored between 1979 and 1984 for tree defoliation and subsequent mortality. These losses serve as an indicator of potential impact as gypsy moth invades new territory. Tree mortality on study plots averaged 18%, worth $18.80 per acre. During the three most severe defoliation years (1980-82), plots that averaged less than 10% defoliation lost 13% of their trees by 1984. Where defoliation averaged 40% or more, the average tree loss was 28%. Timber losses predicted with models developed from the 1970s infestation in northeastern Pennsylvania were within 2% of the actual average loss. The models seem to be acceptable for obtaining broad regional estimates of potential tree mortality and value loss. North. J. Appl. For. 4:128-133, Sept. 1987.

scholarly journals In vitro multiplication of Cedrela fissilis Vell.: A threatened brazilian hardwood forest tree

2021 ◽  
Vol 17 ◽  
pp. 1-11
Author(s):  
Yasmim Smarsaro Bonfá ◽  
Vitor de Laia Nascimento ◽  
Elias Terra Werner
Keyword(s):  
Forest Tree ◽  
Hardwood Forest ◽  
In Vitro Multiplication

NO SIGNIFICANT INCREASE IN TREE MORTALITY FOLLOWING CORING IN A TEMPERATE HARDWOOD FOREST

2019 ◽  
Vol 75 (1) ◽  
pp. 67 ◽  
Author(s):  
Ryan Helcoski ◽  
Alan J. Tepley ◽  
Jennifer C. Mcgarvey ◽  
Erika Gonzalez-Akre ◽  
Victoria Meakem ◽  
...  
Keyword(s):  
Tree Mortality ◽  
Hardwood Forest

scholarly journals Occurrence but not intensity of mortality rises towards the climatic trailing edge of tree species ranges in European forests

2020 ◽  
Author(s):  
Alexandre Changenet ◽  
Paloma Ruiz-Benito ◽  
Sophia Ratcliffe ◽  
Thibaut Fréjaville ◽  
Juliette Archambeau ◽  
...  
Keyword(s):  
Tree Species ◽  
Large Scale ◽  
Tree Mortality ◽  
Forest Tree ◽  
National Forest Inventory ◽  
Forest Composition ◽  
Trailing Edge ◽  
Species Ranges ◽  
Geographical Patterns ◽  
Background Mortality

AbstractAimTree mortality is increasing worldwide, leading to changes in forest composition and altering global biodiversity. Yet, due to the multi-faceted stochastic nature of tree mortality, large-scale spatial patterns of mortality across species ranges and their underlying drivers remain difficult to understand. Our main goal is to describe the geographical patterns and drivers of the occurrence and intensity of tree mortality in Europe. We hypothesize that the occurrence of mortality represents background mortality and is higher in the margin than the core populations, whereas the intensity of mortality could have a more even distribution according to the spatial and temporal stochasticity of die-off events.LocationEurope (Spain, France, Germany, Belgium, Sweden and Finland)Time period1981 to 2014.Major taxa studiedMore than 1.5 million trees belonging to 20 major forest tree speciesMethodsWe develop hurdle models to tease apart the occurrence and intensity of tree mortality in National Forest Inventory plots at range-wide scale. The occurrence of mortality indicates that at least one tree has died in the plot and the intensity of mortality refers to the number of trees dead per plot.ResultsThe highest mortality occurrence was found in peripheral regions and the climatic trailing edge linked with drought, whereas the intensity of mortality was driven by competition, drought and high temperatures and was uniformly scattered across species ranges.Main conclusionsOur findings provide a new perspective in our understanding of tree mortality across species ranges. We show that tree background mortality but not die-off is generally higher in the trailing edge populations, but whether other demographic traits such as growth, reproduction and regeneration would also decrease at the trailing edge of European tree populations needs to be explored.

scholarly journals Tropical forest tree mortality, recruitment and turnover rates: calculation, interpretation and comparison when census intervals vary

2004 ◽  
Vol 92 (6) ◽  
pp. 929-944 ◽  
Author(s):  
SIMON L. LEWIS ◽  
OLIVER L. PHILLIPS ◽  
DOUGLAS SHEIL ◽  
BARBARA VINCETI ◽  
TIMOTHY R. BAKER ◽  
...  
Keyword(s):  
Tropical Forest ◽  
Tree Mortality ◽  
Forest Tree ◽  
Turnover Rates
Sign in / Sign up

Export Citation Format

Share Document