Landscape analysis of risk factors for white pine blister rust in the Mixed Forest Province of Minnesota, U.S.A.

The abundance of eastern white pine (Pinus strobus L.) has been significantly reduced in northeastern Minnesota over the past 120 years. White pine blister rust (WPBR), a commonly lethal fungal disease of white pine, was introduced in Minnesota in approximately 1914 and now, along with other factors such as herbivore browsing, poses a major challenge to attempts to reestablish white pines in the region. A map delineating broad WPBR hazard zones for the Lake States region was prepared in 1964. We created a higher resolution map that estimates the spatial variability of WPBR hazard in the Laurentian Mixed Forest Province of Minnesota using modern geographic information system techniques and readily available spatial databases. The new map has significantly higher resolution than the old and demonstrates that even within areas previously classified as "high hazard", there are significant acreages of "low-hazard" areas where white pine regeneration may be possible. Our analyses are consistent with previous work in the Lake States region, showing that climate, topographic characteristics, and distance from water bodies and wetlands have a strong influence on WPBR infection hazard. We also present methods for analyzing forest conditions at regional scales using commonly available spatial data sets.

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STUDIES ON WHITE PINE BLISTER RUST IN NOVA SCOTIA

The Forestry Chronicle ◽

10.5558/tfc29267-3 ◽

1953 ◽

Vol 29 (3) ◽

pp. 267-272 ◽

Cited By ~ 2

Author(s):

W. K. McGinn ◽

A. G. Davidson

Keyword(s):

Nova Scotia ◽

Control Measure ◽

Systematic Search ◽

White Pine Blister Rust ◽

White Pine ◽

Clear Cutting ◽

Blister Rust ◽

Pine Regeneration ◽

Show Evidence ◽

Cutting Operation

Studies were undertaken in Nova Scotia to determine (i) the effect of different cutting practices on the establishment of a RIBES population and of white pine regeneration, (ii) whether blister rust is a major factor in retarding the establishment of white pine regeneration, and (iii) the feasibility and cost of RIBES eradication as a direct control measure against blister rust. No relationship was found to exist between RIBES establishment and the degree of cutting. Uncut softwood stands, where white pine is the predominant species, show evidence of producing a future pine crop. Forest types supporting white pine appear to offer the best opportunities for pine reproduction where a clear-cutting operation has given the stand maximum opening. Results of the present study to date do not show that blister rust is a major factor in retarding the establishment of white pine regeneration. To eradicate RIBES from the study area by a complete systematic search required 1 man-hour per acre. Because of the small number of RIBES plants found and of the tendency for them to occur consistently in moist, low-lying habitats, a complete systematic search for these plants appears to be unnecessary. It is suggested that one man, trained to recognize RIBES and their probable location, could cover large forest tracts with a minimum of time expended in searching localities unlikely to support these plants.

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Limber Pine Regeneration and White Pine Blister Rust in the Central and Southern Rocky Mountains

Forest Science ◽

10.5849/forsci.16-052 ◽

2017 ◽

Vol 63 (2) ◽

pp. 151-164 ◽

Cited By ~ 4

Author(s):

Christy M. Cleaver ◽

William R. Jacobi ◽

Kelly S. Burns ◽

Robert E. Means

Keyword(s):

Rocky Mountains ◽

White Pine Blister Rust ◽

White Pine ◽

Southern Rocky Mountains ◽

Limber Pine ◽

Blister Rust ◽

Pine Regeneration

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MINING CO-LOCATION PATTERNS WITH CLUSTERING ITEMS FROM SPATIAL DATA SETS

ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences ◽

10.5194/isprs-archives-xlii-3-2505-2018 ◽

2018 ◽

Vol XLII-3 ◽

pp. 2505-2509

Author(s):

G. Zhou ◽

Q. Li ◽

G. Deng ◽

T. Yue ◽

X. Zhou

Keyword(s):

Data Mining ◽

Spatial Data ◽

Spatial Databases ◽

Spatial Data Mining ◽

Data Sets ◽

Location Pattern ◽

Spatial Feature ◽

Geographic Space ◽

Location Patterns ◽

Spatial Data Sets

The explosive growth of spatial data and widespread use of spatial databases emphasize the need for the spatial data mining. Co-location patterns discovery is an important branch in spatial data mining. Spatial co-locations represent the subsets of features which are frequently located together in geographic space. However, the appearance of a spatial feature C is often not determined by a single spatial feature A or B but by the two spatial features A and B, that is to say where A and B appear together, C often appears. We note that this co-location pattern is different from the traditional co-location pattern. Thus, this paper presents a new concept called clustering terms, and this co-location pattern is called co-location patterns with clustering items. And the traditional algorithm cannot mine this co-location pattern, so we introduce the related concept in detail and propose a novel algorithm. This algorithm is extended by join-based approach proposed by Huang. Finally, we evaluate the performance of this algorithm.

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Consistency in Spatial Databases

Encyclopedia of Database Technologies and Applications ◽

10.4018/978-1-59140-560-3.ch016 ◽

2005 ◽

pp. 93-98 ◽

Cited By ~ 1

Author(s):

M. Andrea Rodríguez-Tastets

Keyword(s):

Spatial Data ◽

Computer Aided Design ◽

Large Scale ◽

Spatial Databases ◽

Data Sets ◽

Navigation Systems ◽

Large Scale Integration ◽

Spatial Data Sets ◽

Scale Integration ◽

Aided Design

During the past several years, traditional databases have been enhanced to include spatially referenced data. Spatial database management (SDBM) systems aim at providing models for the efficient manipulation of data related to space. Such type of manipulation is useful for any type of applications based on large spatial data sets, such as computer-aided design (CAD), very large scale integration (VLSI), robotics, navigation systems, and image processing.

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Application of slow-release tablets to enhance white pine regeneration: growth response and efficacy against white pine blister rust

Canadian Journal of Forest Research ◽

10.1139/x05-278 ◽

2006 ◽

Vol 36 (3) ◽

pp. 684-698 ◽

Cited By ~ 6

Author(s):

Douglas G Pitt ◽

Timothy Meyer ◽

Mya Park ◽

Linda MacDonald ◽

Teresa Buscarini ◽

...

Keyword(s):

Seedling Growth ◽

Slow Release ◽

Disease Incidence ◽

Mortality Rates ◽

White Pine Blister Rust ◽

Infection Rates ◽

White Pine ◽

Term Survival ◽

Blister Rust ◽

Pine Regeneration

Three field studies were established in northeastern Ontario to test the ability of slow-release tablets to provide prophylactic protection against white pine blister rust (caused by Cronartium ribicola J.C. Fisch.) and thereby improve the long-term survival, health, and growth of eastern white pine (Pinus strobus L.) seedlings. Experimental treatments included factorial rate combinations the fungicide triadimefon (Bayleton®), the insecticide imidacloprid (Merit®), and fertilizer (NPK, 15:8.5:3.75). Mean foliar fungicide residues increased to maximal levels (0.21 to 3.1 µg/g fresh mass (fm)) within 1 to 2 years posttreatment and declined markedly to <0.3 µg/g fm 3 to 4 years posttreatment. Dose-dependent and temporal trends observed in foliar residue levels were reflected by parallel trends in efficacy. At ≥2000 ppm triadimefon, infection rates were reduced to between 35% and 70% and mortality rates were reduced to between 6% and 52% over seven growing seasons across the three sites. In contrast, untreated seedlings had infection rates between 60% and 98% and mortality rates between 30% and 90%. Neither fungicide nor insecticide treatments had significant effects on surviving seedling growth. Differences in fungicide uptake, disease incidence, and seedling growth in response to fertilization were observed among the three sites. Direct weed control, provided at one site, appeared to offer relatively greater health and growth benefits than fertilization.

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Restoration of White Pine in Minnesota, Wisconsin, and Michigan

HortTechnology ◽

10.21273/horttech.10.3.542 ◽

2000 ◽

Vol 10 (3) ◽

pp. 542-543 ◽

Cited By ~ 3

Author(s):

M.E. Ostry

Keyword(s):

New York ◽

Disease Resistance ◽

Pinus Strobus ◽

Active Management ◽

White Pine Blister Rust ◽

White Pine ◽

Blister Rust ◽

Silvicultural Treatments ◽

Lake States ◽

The Impact

White pine blister rust (Cronartium ribicola J.C. Fisch.) (WPBR) was discovered on Ribes L. in New York in 1906, although it was accidentally introduced from Europe on pine (Pinus L.) seedlings. The spread of this destructive fungus has changed the forests in North America. After decades of reduced planting because of the concern over the impact of WPBR, white pine (Pinus strobus L.) is now being restored in the lake states of Minnesota, Wisconsin and Michigan. Although the potential for growing white pine is high on many sites, the disappearance of a seed source because of logging and fires means that reestablishment of white pine to these areas will require active management. A series of plantings have been established on three national forests in Minnesota and Michigan to evaluate various silvicultural treatments intended to minimize the incidence of WPBR and to compare the performance of seedlings selected for disease resistance to nonselected planting stock.

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