Widespread Crown Condition Decline, Food Web Distribution, And Amplified Tree Mortality With Increase Climate Change-Type DroughtKenneth Goodson

Abstract

Scientists found a correlation between global climate change and drought

Introduction

Premature extinction symptom such as climate change are adding disruption to the food web

The ecological service of carbon storage with consideration to the economic service of Recreation is taking a dive in the efficiency of forests in the Northern Hemisphere

Currently there has been gathered weak tree data from ICP Forests Inventories to study the macro-ecological impacts of droughts on arid Southern European forests over the 20 yr period of 1987 – 2007

Hypothesis Global climate change is expected to cause progressively increased

frequency and severity of drought events and heat waves in the Northern Hemisphere

Methods

Data Defoliation Data from 1987 – 2007 gathered from ICP Forests Program Mortality Data provided by the Second and Third Spanish National

Inventory Climate Change Data retrieved from records of the Spanish National

Institute of Meteorology

Climatic and Crown Defoliation Maps Retrieved from applying mixed spatial interpolation methods that

combine global and local interpolations

Statistical Analyses Defoliation (Weak Tree) analyses contrasted a battery of modeling

sciences including ordinary least squares, general linear models, spatial simultaneous autoregressive models, generalized estimating equations, and general linear mixed models and many more

Results (A) Temporal trends in the

percentage of trees affected by insect defoliation within the Iberian Peninsula

(B) Temporal trends in the percentage of trees affected by drought

Dots represent sampled plots and Red contour lines indicate maximum point density

Discussion Every forest tree species that was examined within the Iberian

Peninsula experienced significant increases in crown defoliation over the last couple of decades due to the impacts of drought

Study shows that the ecological service of chemical cycling dynamics has a tendency of increasing defoliation suggesting the effects are likely to reduce the ecological service of carbon sink efficiency of European forests thus effecting the economic income of Fuel wood and Recreation

Scientists suggest that this topic may emerge as a relevant concern relative to the conservation of currently endangered biotic communities in the Mediterranean basin

Conclusion Global climate change has significant cause to the prolonged research of

drought effect supporting scientific methodical theories of global warming

Literature Cited

“Widespread Crown Condition Decline, Food Web Distribution, And Amplified Tree Mortality With Increase Climate Change-Type Drought.” Editorial.National Academy of Sciences. 15 December 2010.15 December 2010http://www.pnas.org/content/108/4/1474.full