scholarly journals Widespread crown condition decline, food web disruption, and amplified tree mortality with increased climate change-type drought

2011 ◽  
Vol 108 (4) ◽  
pp. 1474-1478 ◽  
Author(s):  
J. Carnicer ◽  
M. Coll ◽  
M. Ninyerola ◽  
X. Pons ◽  
G. Sanchez ◽  
...  
Keyword(s):  
Climate Change ◽  
Food Web ◽  
Tree Mortality ◽  
Crown Condition ◽  
Change Type

Guides for Estimating Forest Stand Losses to Gypsy Moth

1984 ◽  
Vol 1 (2) ◽  
pp. 21-23 ◽  
Author(s):  
David A. Gansner ◽  
Owen W. Herrick
Keyword(s):  
Species Composition ◽  
Gypsy Moth ◽  
Tree Mortality ◽  
Cost Effective ◽  
Forest Stand ◽  
Measure Data ◽  
Effective Management ◽  
Field Plot ◽  
Crown Condition ◽  
As Species

Abstract People who have to make decisions about cost-effective management for gypsy moth need help in predicting and evaluating its effects. Field plot data collected during recent outbreaks in Pennsylvania are being used to develop guides for predicting forest stand losses to the pest Presented here are some of the more useful products of that effort to date. Easy-to-measure data for forest characteristics such as species composition and crown condition can be collected and applied in models that estimate potential stand and tree mortality and changes in timber value. North. J. Appl. For. 2:21-23, June 1984.

scholarly journals Eucalyptusforest shows low structural resistance and resilience to climate change-type drought

2016 ◽  
Vol 27 (3) ◽  
pp. 493-503 ◽  
Author(s):  
George Matusick ◽  
Katinka X. Ruthrof ◽  
Joseph B. Fontaine ◽  
Giles E. St. J. Hardy
Keyword(s):  
Climate Change ◽  
Change Type ◽  
Structural Resistance

scholarly journals Relationship of silver fir (Abies alba Mill.) mortality in the area of Fužine with climatic and structural parameters

2021 ◽  
Vol 145 (7-8) ◽  
pp. 311-321
Author(s):  
Damir Ugarković ◽  
Nenad Potočić ◽  
Marko Orešković ◽  
Krešimir Popić ◽  
Mladen Ognjenović ◽  
...  
Keyword(s):  
Climate Change ◽  
Tree Mortality ◽  
Negative Impact ◽  
Structural Parameters ◽  
Abies Alba ◽  
Extreme Weather Events ◽  
Anthropogenic Factors ◽  
Silver Fir ◽  
Weather Extremes ◽  
Causes Of Mortality

Tree dieback is a complex process involving negative impact of various abiotic, biotic and anthropogenic factors. Climate change, comprising all those effects, is generally considered as the largest threat to forest ecosystems in Europe. Although the scale of climate change impacts on forests is not yet fully understood, especially on the regional or species level, significant damage seems to be caused by weather extremes, such as drought and strong winds. With the expected increase in the number, length, and/or intensity of extreme weather events in Croatia, research into the causes of tree mortality is both important and timely. Silver fir is the most damaged and endangered conifer tree species in Croatia. The dieback of silver fir can be attributed to various factors, therefore the goals of this research were to determine the mortality of silver fir trees (by number and volume) for various causes of mortality, among which the climatic and structural parameters were of most interest. The twenty-year data for tree mortality in pure silver fir stands in the area of Fužine (Gorski kotar, Croatia) were collected and analysed. The largest number and volume of dead trees was caused by complex (multiple causes) dieback in the overstorey (0,75 N/ha, 2,35 m<sup>3</sup>/ha), and the smallest (0,17 N/ha, 0,02 m<sup>3</sup>/ha) by dieback of supressed trees. No significant differences were determined regarding the timing of tree death for different causes of mortality. Climatic parameters (drought, air temperature, PET) and structural parameters of the stands (tree DBH, social position, crown diameter, shading, physiological maturity) as well as plot inclination were found to be the factors of a significant influence on the mortality of silver fir trees.

scholarly journals Phenotypic plasticity mediates climate change responses among invasive and indigenous arthropods

2007 ◽  
Vol 274 (1625) ◽  
pp. 2531-2537 ◽  
Author(s):  
Steven L Chown ◽  
Sarette Slabber ◽  
Melodie A McGeoch ◽  
Charlene Janion ◽  
Hans Petter Leinaas
Keyword(s):  
Climate Change ◽  
Invasive Species ◽  
Phenotypic Plasticity ◽  
Global Change ◽  
Terrestrial Ecosystems ◽  
Indigenous Species ◽  
Potential Threat ◽  
Human Welfare ◽  
Change Type ◽  
Climate Change Responses

Synergies between global change and biological invasion have been identified as a major potential threat to global biodiversity and human welfare. The global change-type drought characteristic of many temperate terrestrial ecosystems is especially significant because it will apparently favour invasive over indigenous species, adding to the burden of conservation and compromising ecosystem service delivery. However, the nature of and mechanisms underlying this synergy remain poorly explored. Here we show that in a temperate terrestrial ecosystem, invasive and indigenous springtail species differ in the form of their phenotypic plasticity such that warmer conditions promote survival of desiccation in the invasive species and reduce it in the indigenous ones. These differences are consistent with significant declines in the densities of indigenous species and little change in those of invasive species in a manipulative field experiment that mimicked climate change trends. We suggest that it is not so much the extent of phenotypic plasticity that distinguishes climate change responses among these invasive and indigenous species, as the form that this plasticity takes. Nonetheless, this differential physiological response provides support for the idea that in temperate terrestrial systems experiencing global change-type drought, invasive species may well be at an advantage relative to their indigenous counterparts.

scholarly journals Tree mortality in response to climate change induced drought across Beijing, China

2014 ◽  
Vol 124 (1-2) ◽  
pp. 179-190 ◽  
Author(s):  
Xiongqing Zhang ◽  
Yuancai Lei ◽  
Yong Pang ◽  
Xianzhao Liu ◽  
Jinzeng Wang
Keyword(s):  
Climate Change ◽  
Tree Mortality ◽  
Beijing China

Crown condition, water availability, insect damage and landscape features: are they important to the Chilean tree Nothofagus glauca (Nothofagaceae) in the context of climate change?

2013 ◽  
Vol 61 (5) ◽  
pp. 394 ◽  
Author(s):  
Scott H. Altmann
Keyword(s):  
Climate Change ◽  
Water Availability ◽  
Leaf Damage ◽  
Insect Damage ◽  
Plant Water ◽  
Vegetative Cover ◽  
Crown Condition ◽  
Plant Vigour ◽  
Landscape Features ◽  
The Impact

An understanding of the impact that climate change will have on dominant plant species is important given the central role of these species in ecosystem functioning. Southern beech (Nothofagus Blume) is a central genus in the forests of the southern cone of South America, with Nothofagus glauca (Phil.) Krasser a dominant, at-risk tree inhabiting the drought-prone region of central Chile. The present study explored the relationships among several environmental variables that may be critical to understanding the impact of climate change on N. glauca, most importantly crown condition, plant water availability, insect leaf damage and landscape features. Furthermore, the study examined whether these variables differed between individuals from drier or wetter stands distributed within a north–south geographic area. Multiple regression modelling detected important relationships for the dependent variable crown condition with branch midday water potential, N. glauca diameter at breast height and vegetative cover, as well as with landscape variables in interaction with different plant vigour and water availability measures. Negative correlations between insect damage and plant water availability measures were observed at two field sites. Overall, crown condition and water availability were higher, and insect damage was lower, in wetter stands. The results of the present study have important negative implications for the species in terms of climate change and can be applied to future investigations.

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