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Selection: with tag oak-decline [18 articles] 


Oak decline as illustrated through plant–climate interactions near the northern edge of species range

The Botanical Review, Vol. 82, No. 1. (2016), pp. 1-23,


This paper investigates historical growth and climate records among the oak sites representing the northern edge of species range in northernmost Europe (Finland). This is to characterize plant–climate interactions for a multitude of sites where oak decline has recently been observed and understand this most recent decline in the context of the past decline studies elsewhere. Further, our paper demonstrates the procedures the tree-ring data can be used in isolating those factors significantly contributing to decline. Our findings point towards complex ...


(INRMM-MiD internal record) List of keywords of the INRMM meta-information database - part 26

(February 2014)
Keywords: inrmm-list-of-tags   nectaroscordum-siculum   nectria-coccinea   negative-emission   negative-emissions   negative-learning   negative-studies   neglecting-non-monetary-criteria   negotiation   neighbourhood-analysis   nematus-melanaspis   nematus-oligospilus   nemoral-climate   neocallitropsis-pancheri   neodiprion-sertifer   neofusicoccum-parvum   neogene   neonicotinoid   nepal   nephelium-lappaceum   nerium-oleander   nested-loops-and-conditional-structures   netherlands   network-representation-capability   networks   neural-networks   neuro-dynamic-programming   neuroterus-spp   new-forested-areas   new-species   new-zealand   niche-limits   niche-model   niche-modelling   niche-sourcing   nickel   nigeria   nitrogen   nitrogen-deposition   nitrogen-fixation   nitrogen-leaching   nitrogen-partitioning   no-analog-pattern   no-analogue   no-free-lunch-theorem   nolina-recurvata   non-array-oriented   non-equilibrium   non-linearity   non-semantic-software-errors   non-stationarity   non-wood-products   nonadditive-measures   nonideal-neurons   nonlinear-correlation   nonlinear-response-to-bioclimatic-predictors   nonmarket-impacts   nonsteady-flame-convection   north-africa   north-america   northern-europe   northern-hemisphere   norway   not-automatic-workflow   notation   notation-as-a-tool-of-thought   nothofagus-cunninghamii   nothofagus-glauca   nothofagus-nervosa   nothofagus-procera   nothofagus-pumilio   nothofagus-spp   notholithocarpus-densiflorus   nothotsuga-spp   nreap-2020   nuclear-disasters   numerical-analysis   numpy   nurse-species   nut-producing-plants   nutrient-gradient   nutrient-recommendations   nutrient-rich-soil   nutrients   nutritional-composition   nyssa-spp   nyssa-sylvatica   oak-decline   oak-hornbeam-forest   oak-shake   object-classification   object-detection   object-oriented-programming   occam-razor   occupancy-vs-detection   ocean-acidification   ocean-circulation   oceans   ochroma-pyramidale   oenothera-spp  


List of indexed keywords within the transdisciplinary set of domains which relate to the Integrated Natural Resources Modelling and Management (INRMM). In particular, the list of keywords maps the semantic tags in the INRMM Meta-information Database (INRMM-MiD). [\n] The INRMM-MiD records providing this list are accessible by the special tag: inrmm-list-of-tags ( ). ...


Multiple factors associated with oak decline in southern Italy

Phytopathologia Mediterranea, Vol. 37, No. 1. (1998), pp. 1-8


Severe decline of oak trees has been observed in Italy in the last fifteen years and attributed to several biotic and abiotic causes. In order to assess the spread and the etiology of oak decline in southern Italy, investigations have been carried out in eight declining oak woods. Oak species affected, site and climatic conditions, plant water potential, anthropic factors (pasturing, silvicultural management, air pollution) and fungi associated to declining plants were evaluated. Quercus cerris L. and Q. frainetto Ten. were ...


Mediterranean forest tree decline in Italy

edited by P. Raddi
Keywords: forest-resources   italy   oak-decline  

Evidence for Phytophthora cinnamomi involvement in Iberian oak decline

Plant Pathology, Vol. 42, No. 1. (1 February 1993), pp. 140-145,


Rapid and sometimes extensive mortality and decline of oak, principally Quercus suber and Q. ilex, has occurred in parts of southern Spain and Portugal in recent decades. We report here isolation of the aggressive root pathogen Phytophthora cinnamomi from roots of diseased oaks or from soil at eleven out of thirteen decline foci examined. It is proposed that the introduction and spread of P. cinnamomi may be a major factor in the Iberian oak decline, interacting with drought and other site ...


Oak forest exploitation and black-locust invasion caused severe shifts in epiphytic lichen communities in Northern Italy

Science of The Total Environment, Vol. 408, No. 22. (October 2010), pp. 5506-5512,


In the last two centuries, native European oak forests have undergone a dramatic decline related to increasing human pressure for agriculture and urbanization. Oak forests were either completely eradicated and transformed into agricultural landscapes or replaced by second-growth formations. Intensive forest management and the replacement of native forests with production forests or arable lands are recognized amongst the main threats to many lichens in Europe. In this study, we used historical information on the epiphytic lichen biota which was hosted in ...


Growth decrease and mortality of oak floodplain forests as a response to change of water regime and climate

European Journal of Forest Research In European Journal of Forest Research, Vol. 134, No. 3. (2015), pp. 555-567,


Forest mortality is globally present, and pedunculate oak (Quercus robur) forests in Europe are no exception at all. The aim of this study was to tackle the issue of oak floodplain forests response to water level, temperature and precipitation changes due to the altered climate conditions. We examined interannual and interseasonal scales using dendroecological analysis. The goal was to review the growth from the perspective of forest management practice, including specific recommendations for forest managers. The most important environmental variable in ...


Oak decline in a southern Finnish forest as affected by a drought sequence

Geochronometria, Vol. 41, No. 1. (1 January 2014),


We investigated the decline of a pedunculate oak (Quercus robur L.) forest growing on shallow soil at the northern distributional limit of the species in southern Finland, using the dendroclimatic approach. About 200-year-old trees in three vigour classes — healthy, declining and dead — were sampled in 2008. Annual tree-ring, earlywood and latewood widths were measured and chronologies were established. The tree-ring data were correlated with monthly and seasonal climate data. Radial increment of oaks was positively related to the June ...


Bark and wood boring insects involved in oak declines in Europe: Current knowledge and future prospects in a context of climate change

Forest Ecology and Management, Vol. 328, No. 0. (2014), pp. 79-93,


Abstract Oak declines are multifactorial processes in which bark and wood boring (BWB) beetles can act as major inciting factors, killing the weakened trees. Nonetheless, the current knowledge on the biology, ecology of these species is scattered and no efficient management strategies are currently available. Based on the existing literature and field observations from the French forest health service, we firstly identified the prominent \{BWB\} species implicated in oak declines in Europe. Secondly we performed a state of the art on ...


Endophytic fungi in Quercus cerris: isolation frequency in relation to phenological phase, tree health and the organ affected

Phytopathologia Mediterranea, Vol. 40 (2001), pp. 165-171


The isolation frequency of endophytic fungi in Quercus cerris was determined in relation to sampling data, the health state of the tree, and the tree organ affected. Sampling was carried out at three times, in April (budbreak), June (full vegetation) and October (leaf fall), on trees that were either healthy or in decline, and on three organs: current-year twigs, with a diameter less than 2 cm, buds, and leaves. The experiment was done in an approximately 20-year-old oak forest at an ...


Assessing the consequences of global change for forest disturbance from herbivores and pathogens

Science of The Total Environment, Vol. 262, No. 3. (November 2000), pp. 263-286,


Herbivores and pathogens impact the species composition, ecosystem function, and socioeconomic value of forests. Herbivores and pathogens are an integral part of forests, but sometimes produce undesirable effects and a degradation of forest resources. In the United States, a few species of forest pests routinely have significant impacts on up to 20 million ha of forest with economic costs that probably exceed 1 billion $/year. Climatic change could alter patterns of disturbance from herbivores and pathogens through: (1) direct effects on ...


Brenneria goodwinii sp. nov., associated with acute oak decline in the UK

International Journal of Systematic and Evolutionary Microbiology, Vol. 62, No. Pt 10. (01 October 2012), pp. 2451-2456,


A group of nine Gram-negative staining, facultatively anaerobic bacterial strains isolated from native oak trees displaying symptoms of acute oak decline (AOD) in the UK were investigated using a polyphasic approach. 16S rRNA gene sequencing and phylogenetic analysis revealed that these isolates form a distinct lineage within the genus Brenneria, family Enterobacteriaceae, and are most closely related to Brenneria rubrifaciens (97.6 % sequence similarity to the type strain). Multilocus sequence analysis based on four housekeeping genes (gyrB, rpoB, infB and atpD) confirmed ...


Decline of Mediterranean oak trees and its association with Phytophthora cinnamomi: a review

European Journal of Forest Research, Vol. 132, No. 3. (2013), pp. 411-432,


Mortality events in cork and holm oaks have occurred in the Mediterranean basin since the beginning of the XX century, but severity of decline increased during the 1980s. By that time, the exotic soil borne pathogen Phytophthora cinnamomi was often recovered from declining stands and since then it has been considered the main factor associated with decline. This work analyses data concerning P. cinnamomi surveys in cork and holm oaks trees, pathogenicity tests carried out in controlled experiments, studies about the ...


Description of Gibbsiella quercinecans gen. nov., sp. nov., associated with Acute Oak Decline

Systematic and Applied Microbiology, Vol. 33, No. 8. (December 2010), pp. 444-450,


Gram-negative, facultatively anaerobic bacterial strains were consistently isolated from oak trees displaying symptoms of extensive stem bleeding. In Britain, this disorder is called Acute Oak Decline (AOD). A similar condition has been noted on species of Mediterranean oak in Spain. The identity of bacterial isolates from symptomatic trees in both countries was investigated using molecular techniques and phenotypic assays. 16S rRNA gene sequencing indicated that the strains were most closely related to the genera Serratia, Kluyvera, Klebsiella and Raoultella (all > ...


Analysis of spatial patterns of oak decline in cork oak woodlands in Mediterranean conditions

Annals of Forest Science In Annals of Forest Science, Vol. 67, No. 2. (2010), pp. 204-204,


[::] Cork oak mortality is a recurrent problem in southwestern Portugal. Despite the perception of increasingly visible damage in oak woodlands on drought-prone sites, the role of the various environmental factors in their decline is not clear. [::] To describe the spatial patterns of cork oak (Quercus suber L.) mortality, a cork oak mortality index (MI) was determined for each landscape feature (agroforestry system, soil type, slope and aspect) using a GIS approach. To achieve this goal, a logistic regression model was ...


Oak decline in Helsinki portrayed by tree-rings, climate and soil data

Plant and Soil In Plant and Soil, Vol. 319, No. 1-2. (2009), pp. 163-174,


Oak decline has recently been observed in and around Helsinki. Tree-ring widths of pedunculate oak were used to assess pre-mortem growth patterns, their dependence on climatic factors and linkages to soil thickness. Tree-ring chronologies were constructed in three tree vigour classes (healthy, declining and dying oaks). Characteristic “summer response” was found as a positive influence of summer precipitation was the most important climatic factor limiting the radial growth in all vigour classes. On the other hand, a differing “winter response” was ...


Forest pathogens with higher damage potential due to climate change in Europe

Canadian Journal of Plant Pathology, Vol. 30, No. 2. (1 April 2008), pp. 177-195,
Keywords: abies-alba   alnus-cordata   alnus-glutinosa   alnus-incana   alnus-viridis   alpine-region   armillaria-spp   biscogniauxia-mediterranea   biscogniauxia-nummularia   carpinus-betulus   castanea-sativa   ceratocystis-platani   climate-change   corylus-avellana   cryphonectria-parasitica   cupressus-arizonica   cupressus-macrocarpa   cupressus-sempervirens   diplodia-pinea   dothistroma-pini   dothistroma-septosporum   droughts   dutch-elm-disease   europe   fagus-sylvatica   forest-pests   global-warming   gremmeniella-abietina   heterobasidion   heterobasidion-abietinum   heterobasidion-annosum   leptographium-spp   megastigmus-wachtli   mycosphaerella-pini   oak-decline   olea-europaea   ophiostoma-novo-ulmi   ophiostoma-ulmi   phytophthora-alni   phytophthora-cinnamomi   phytophthora-polonica   picea-abies   pinus-banksiana   pinus-cembra   pinus-contorta   pinus-halepensis   pinus-nigra   pinus-pallasiana   pinus-pinaster   pinus-pinea   pinus-radiata   pinus-spp   pinus-sylvestris   platanus-spp   pseudotsuga-spp   quercus-cerris   quercus-ilex   quercus-petraea   quercus-pubescens   quercus-robur   quercus-rotundifolia   quercus-spp   quercus-suber   scirrhia-pini   secondary-opportunistic-pest   seiridium-cardinale   seiridium-spp   silver-fir-decline   species-decline   sphaeropsis-sapinea   temperate-mountain-system   ulmus-glabra  


Abstract Most atmospheric scientists agree that climate changes are going to increase the mean temperature in Europe with increased frequency of climatic extremes, such as drought, floods, and storms. Under such conditions, there is high probability that forests will be subject to increased frequency and intensity of stress due to climatic extremes. Therefore, impacts of climate change on forest health should be carefully evaluated. Given these assumptions, several fungal diseases on trees may become more devastating because of the following factors: ...


A description of the symptoms of Acute Oak Decline in Britain and a comparative review on causes of similar disorders on oak in Europe

Forestry, Vol. 87, No. 4. (2014), pp. 535-551,


Acute Oak Decline (AOD) is a relatively new decline-disease affecting both native oak species (Quercus robur and Q. petraea) in Britain. The key aim of this study was to describe the symptoms, and signs of AOD, to set a baseline. The second aim was to compare and review the European literature on what appear to be similar disorders on oak. AOD is characterized by four key features: weeping patches more-or-less vertically aligned on oak tree trunks; cracks between bark plates from ...

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