scholarly journals Conferința Internațională IUFRO ”Semnificația schimbărilor actuale de mediu asupra dăunătorilor și patogenilor din ecosistemele forestiere” Suceava, 16-20 septembrie 2019

2019 ◽  
Vol 19 (2) ◽  
pp. 209-218
Author(s):  
Mihai-Leonard Duduman ◽  
Daniela Lupaștean
Keyword(s):  
Central Europe ◽  
Forest Insect ◽  
Forest Insects ◽  
Disease Survey

În perioada 16 – 20 septembrie 2019, a avut loc la Suceava cea de-a 13-a conferință internațională a Grupului de lucru IUFRO* 7.03.10 „Methodology of forest insect and disease survey in Central Europe”, cu titlul „Recent Changes in Forest Insects and Pathogens Significance”. Conferința este organizată, la fiecare 2 ani, de către universități sau institute de cercetare din domeniul forestier din Europa iar, după 19 ani, conferința revine în România. Facultatea de Silvicultură din cadrul Universităţii ”Ștefan cel Mare” a avut onoarea de a fi organizatoarea acestei manifestări științifice importante, sub coordonarea comitetului grupului de lucru IUFRO 7.03.10. La buna desfășurare a conferinței au contribuit Asociația „Societatea pentru Silvicultură si Mediu Suceava”, precum și sponsorii Regia Națională a Pădurilor Romsilva și compania AlphaScent (USA). Temele abordate în cadrul conferinței se încadrează în sfera preocupărilor privind dăunătorii și bolile care afectează pădurile din Emisfera Nordică și identificarea de soluții tehnice pentru controlul bolilor și dăunătorilor, respectiv: actualizarea informațiilor privind distribuția bolilor si dăunătorilor forestieri; identificarea si monitorizarea speciilor invazive de boli și dăunători și identificarea de soluții pentru reducerea impactului bolilor și dăunătorilor forestieri. Conferința a reunit peste 80 de participanți și invitați, cercetători și practicieni din domeniul protecției pădurilor din 19 țări, care au împărtășit rezultatele activității lor în domeniul protecției pădurilor în cadrul celor 31 de prezentări orale și a celor 28 de postere afișate. Cu sprijinul colegilor de la Direcția Silvică Suceava, Ocolul Silvic Adâncata și Ocolul Silvic Pojorâta, programul conferinței a inclus o excursie in rezervațiile naturale Pădurea Zamostea Luncă și Codrul Secular Giumalău, o ocazie rară pentru participanți de a cunoaște și admira frumusețea naturii acestui colț de țară.

EVALUATION OF THE TREE-BEATING METHOD FOR SAMPLING DEFOLIATING FOREST INSECTS

1972 ◽  
Vol 104 (5) ◽  
pp. 723-729 ◽  
Author(s):  
J. W. E. Harris ◽  
D. G. Collis ◽  
K. M. Magar
Keyword(s):  
Normal Population ◽  
Weather Conditions ◽  
Tsuga Heterophylla ◽  
Present System ◽  
Insect Larvae ◽  
Forest Insect ◽  
Test Species ◽  
Forest Insects ◽  
Disease Survey ◽  
And Control

AbstractA procedure for sampling defoliating forest insect larvae by beating them from foliage, used by the Forest Insect and Disease Survey of the Canadian Forestry Service to record population trends and predict future damage and control need in British Columbia, was tested over 150,000 acres on Vancouver Island. The parameters used were average numbers of larvae per collection and percentage positive collections. Results on the test species Acleris gloverana (Wlshm.) and Melanolophia imitata (Wlk.), on host Tsuga heterophylla (Raf.) Sarg., indicated that for low (normal) population levels the present system of choosing three-tree samples along roadsides was satisfactory but that weather conditions markedly affected sample results.

The Caragana Aphid, Acyrthosiphon caraganae (Cholod.) in Western Canada, and its Separation from the Pea Aphid

1962 ◽  
Vol 94 (10) ◽  
pp. 1075-1077 ◽  
Author(s):  
A. G. Robinson ◽  
G. A. Bradley
Keyword(s):  
British Columbia ◽  
North America ◽  
Chemical Control ◽  
Pea Aphid ◽  
Annual Reports ◽  
Western Canada ◽  
Forest Insect ◽  
Disease Survey ◽  
Caragana Arborescens

Except for occasional references in the Annual Reports of the Forest Insect and Disease Survey of infestations of an aphid on caragana (Caragana arborescens Lam.) in Western Canada and a note on chemical control (Bradley, 1952), there is no published record known to the authors of the occurrence of the caragana aphid, Acyrthosiphon caraganae (Cholod.), in North America. MacNay (1953) summarized reports that severe infesrations of aphids, “probably mainly the caragana aphid”, occurred on caragana in 1952 in the East Kootenays of British Columbia, and at several places in Alberta and Saskatchewan. At some localities 100 per cent defoliation was reported.

Small-Scale Imagery in Forest Pest Surveys in British Columbia

1974 ◽  
Vol 28 (2) ◽  
pp. 155-161 ◽  
Author(s):  
John W. E. Harris
Keyword(s):  
British Columbia ◽  
Aerial Photographs ◽  
Small Scale ◽  
Forest Pest ◽  
Forest Insect ◽  
Disease Survey ◽  
Forested Areas ◽  
Increasing Demand ◽  
Accurate Record ◽  
Improved Methods

Surveillance of the large forested areas of British Columbia by personnel of the Forest Insect and Disease Survey, Canadian Forestry Service, involves ground examinations, supplemented by limited observations from small aircraft. The increasing demand for better information, however, has resulted in a search for improved methods. One answer seems to be aerial photography, which offers a permanent accurate record. Conventional aerial photographs are useful but are expensive to obtain and interpret. This study has determined that the boundaries and intensity of a variety of forest pest infestations can also be delineated on color photographs at some of the smallest scales (about 1:137,000) available, and at least some infestations that contrast well with surrounding forests can also be seen on ERTS-1 imagery. The latter has the advantage of being routinely available and cost shared by various users, while normal photography requires a specific mission. Results with ERTS-1 are encouraging, and likely improvements in future resource satellites may be of increasing value in survey programs.

FORESTS, DISTURBANCES, AND INSECTS

1980 ◽  
Vol 112 (11) ◽  
pp. 1185-1192 ◽  
Author(s):  
J. M. McLeod
Keyword(s):  
Forest Disturbance ◽  
Theoretical Base ◽  
Collection System ◽  
Faunal Assemblage ◽  
Forest Insect ◽  
Faunal Assemblages ◽  
Biological Survey ◽  
Disease Survey ◽  
Recent Developments ◽  
Replacement Time

AbstractRecent developments in ecological theory pertaining to the coexistence of insect species in response to forest disturbance are reviewed, and the findings are applied to the requirements for the Biological Survey of the Insects of Canada. It is important that a data collection system have a sound theoretical base, otherwise it will probably be found inadequate for the purpose for which it was designed. Questions about changes in faunal assemblages should be related to the scale of disturbance relative to the replacement time of the forest. Recommendations for research on faunal assemblage disturbance relationships are made for the Forest Insect and Disease Survey of Canada, and for the northern boreal forest.

ARNEWS assesses the health of Canada's forests

1995 ◽  
Vol 71 (5) ◽  
pp. 607-613 ◽  
Author(s):  
J. Peter Hall
Keyword(s):  
Sustainable Management ◽  
Large Scale ◽  
Forest Health ◽  
Warning System ◽  
Monitoring Network ◽  
National Forest ◽  
Forest Insect ◽  
Ecosystem Monitoring ◽  
Disease Survey ◽  
Observed Damage

In 1984 the Canadian Forest Service (CFS) established the Acid Rain National Early Warning System (ARNEWS) to monitor the state of health of Canada's forests. This program was implemented by the CFS Forest Insect and Disease Survey (FIDS) who survey the plots annually and determine the causes of observed damage. For the period, 1984-1994, the survey indicates that there has been no large-scale decline in the health of Canada's forests. Insects, diseases and abiotic conditions have impacted forests, and isolated cases of damage caused by air pollution have been observed. The presence of unknown damage is also being investigated to determine if pollution is involved. The results of this survey support the need for a national forest health monitoring network as part of sustainable management of Canadian forests. Key words: forest health, forest surveys, sustainable forestry, ecosystem monitoring

The Forest Insect and Disease Survey

1964 ◽  
Vol 96 (1-2) ◽  
pp. 134-134
Author(s):  
R. M. Prentice
Keyword(s):  
Life Histories ◽  
Aerial Survey ◽  
Field Sampling ◽  
Regional Survey ◽  
Forest Insect ◽  
Winter Moth ◽  
Current Series ◽  
Pictorial Review ◽  
Disease Survey ◽  
Forest Lepidoptera

The organization of the Forest Insect and Disease Survey, a continuing project of the Forest Entomology and Pathology Branch, Department of Forestry,was reviewed. Typical field and laboratlory operations in entomology at regional survey units were shown. The specific subject matter of the display included: a pictorial review of field sampling and insectary procedures; aids to identification of immature insects; a method of aerial survey wing an operational recorder; the life histories of seven species of defoliators; the establishment and spread of winter moth in the Maritimes and satin moth in British Columbia; and finally, machine methods of recording Survey data and procedures used in preparing the current series of national compilation of Forest Lepidoptera of Canada.

Biological and Descriptive Notes on Noctuid Larvae

1958 ◽  
Vol 90 (2) ◽  
pp. 114-124 ◽  
Author(s):  
W. C. McGuffin
Keyword(s):  
Head Width ◽  
Forest Insect ◽  
Free Living ◽  
Larval Length ◽  
Disease Survey

These observations, dealing with noctuid larvae, were made while the writer was associated with the Canadian Forest Insect and Disease Survey. Twenty-four species have been examined: 9 in the Hadeninae, 10 in the Cucullinae, 3 in the Amphipyrinae, and 2 in the Catocalinae. The arrangement of the subfamilies follows that of McDunnough (1938). This material is being published because many of these species have not been included in Crumb (1956) and new data are presented on the species considered by him. The descriptions were made from living and preserved larvae. Notes on biologies, unless otherwise indicated, refer to those made by the writer in Manitoba and Alberta during the years 1944-1954. The hosts are those on which larvae have been reared to adults by the Forest Insect and Disease Survey, except in a few cases where the host is cited from the literature. “Free-living larvae”, are those that feed openly. When the number of instars is not known the larvae are described as antepenultimate, penultimate, and ultimate. In measurements, H.W. refers to head width, B.L., to total larval length, and B.W., to greatest larval width.

scholarly journals Border interceptions of forest insects established in Australia: intercepted invaders travel early and often

NeoBiota ◽  
2021 ◽  
Vol 64 ◽  
pp. 69-86
Author(s):  
Helen F. Nahrung ◽  
Angus J. Carnegie
Keyword(s):  
Invasive Species ◽  
Insect Species ◽  
Biological Traits ◽  
Forest Insect ◽  
Species Inventory ◽  
Productivity Losses ◽  
Forest Insects ◽  
Wood Boring ◽  
Established Species ◽  
Biodiversity Decline

Invasive forest insects continue to accumulate in Australia (and worldwide) and cause significant impacts through costs of prevention, eradication and management, and through productivity losses and environmental and biodiversity decline. We used our recent non-native Australian forest insect species inventory to analyse border interception rates (2003–2016) of established species, and link interception frequencies with biological traits, historical establishment patterns, commodities and countries of origin. The strongest predictor of interception frequency was year of establishment. Polyphagous species were more likely to be intercepted, as were more concealed species, although this latter likely reflects the higher interceptions of bostrichid borers and other wood-boring Coleoptera relative to other taxa. Interceptions occurred more often for species native to Asia; in contrast, interceptions from other regions were more likely to be of species invasive there. While interception frequencies did not provide a good overall indicator of contemporaneous species establishments, wood and bark borers were more closely linked for establishments and interceptions. The first fifty forest insect species to establish comprised 85% of all border interceptions of established species between 2003 and 2016, while the most-recent fifty species represented just 6% of interceptions. We suggest that early-establishing species are among the “super-invaders” that continue to move globally, while more recent invasive species may be exploiting new trade pathways, new commodity associations, or changes in dynamics in their countries of origin.

Notes on the Biology of Griselda radicana (Wlshm.) (Lepidoptera: Olethreutidae)

1961 ◽  
Vol 93 (8) ◽  
pp. 648-653 ◽  
Author(s):  
J. R. Blais
Keyword(s):  
Life History ◽  
Picea Mariana ◽  
Picea Glauca ◽  
Black Spruce ◽  
Host Tree ◽  
Balsam Fir ◽  
Forest Insect ◽  
Picea Pungens ◽  
Disease Survey ◽  
Spruce Stands

In the course of studles on different species of defoliators in field-spruce stands on the Gaspé coast of the Baie des Chaleurs, Griselda radicana (Wlshm.) occurred fairly commonly in such stands. Although the principal host tree of this insect is white spruce, Picea glauca (Moench) Voss, records of the Forest Insect and Disease Survey show that it has been collected from black spruce, Picea mariana (Mill.) BSP., Colorado spruce, Picea pungens Engelm., and balsam fir, Abies halramea (L.) Mill. Although G. radicana is commonly found across Canada, there are no records that it has ever reached outbreak proportions. These investigations were undertaken since nothing was known on the life history and habits of this insect. The studies were carried out near New Richmond in the Gaspé Peninsula in the summer of 1959.

NEW DESCRIPTIONS OF LARVAE OF FOREST INSECTS: LARVAE OF THE GENUS EUPITHECIA (LEPIDOPTERA, GEOMETRIDAE)

1945 ◽  
Vol 77 (3) ◽  
pp. 53-55 ◽  
Author(s):  
W. C. McGuffin
Keyword(s):  
Forest Insect ◽  
Forest Insects ◽  
Insect Survey

During the last seven years, larvae representing more than a dozen species of the genus Eupithecia have been received by the Forest Insect Survey of Canada. With the hope that some of these larvae may be recognized more readily, two species are described herewith; additional notes are given on three species already described, and a key for the separation of mature larvae of these five species is presented at the end of this article.

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