The Adult Feeding Habit of Some Conifer-infesting Weevils

During the course of examining a white pine tree on May 25, 1945, the writer noticed a small black weevil clinging to the sheath of a needle fascicle, on the current year's shoot. The weevil was in a position parallel to the fascicle, its head directed upward, and its beak resting against the needle sheath. Closer scrutiny revealed a droplet of resin about the tip of the beak, and several small holes in the sheath distal to the beetle. When the beetle was removed, it was in the act of boring another similar hole in the needle fascicle. A brief search resulted in the finding of additional weevils in the same position on other twigs. Since no weevil of this habit on pine could be called to mind, six specimens were collected and two more were taken on May 29.

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Current understanding of white and red pine physiology

The Forestry Chronicle ◽

10.5558/tfc70420-4 ◽

1994 ◽

Vol 70 (4) ◽

pp. 420-426 ◽

Cited By ~ 6

Author(s):

Suzanne Wetzel ◽

Darwin Burgess

Keyword(s):

Economic Value ◽

Measurement Data ◽

Field Studies ◽

Forest Growth ◽

Red Pine ◽

Tree Level ◽

White Pine ◽

Growth Measurement ◽

Pine Tree ◽

Physiological Processes

For significant and predictable improvements in productivity of red and white pine forests, an increased understanding of the physiological processes in these species is essential. Relatively little physiological research has focused on these two species over the last two decades. However, with renewed interest in these species now for their high social, environmental and economic value this situation is changing. This paper describes past efforts at understanding red and white pine physiology, as well as discussing recent achievements. In addition, new results obtained by the authors through the use of Biotronic growth units are described in more detail to emphasize the high adaptability of white pine seedlings in response to nutrient stress through changes in carbon distribution, nutrient uptake and utilization.The ultimate practical output of much forestry research is often models predicting tree and forest growth. However, models which are based solely on empirical growth measurement data will not provide the understanding that is necessary for sustainable management; thus, increased research on physiological processes will continue to be required in future. Long-term detailed field studies that consider environmental and silvicultural influences at the organ and whole tree level are required to ensure that future models have high explanatory value. Key words: white pine, red pine, tree physiology, photosynthesis, seedling nutrition, silviculture

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Volume distribution of eastern white pine in Canada

The Forestry Chronicle ◽

10.5558/tfc70369-4 ◽

1994 ◽

Vol 70 (4) ◽

pp. 369-371 ◽

Cited By ~ 3

Author(s):

J. J. Lowe

Keyword(s):

Species Distribution ◽

Forest Inventory ◽

Forest Type ◽

Pinus Strobus ◽

Volume Distribution ◽

White Pine ◽

Eastern White Pine ◽

Maritime Provinces ◽

Pine Tree ◽

Forest Region

The distribution of eastern white pine (Pinus strobus L.) is described using Canada's Forest Inventory to map volume levels of the species and to tabulate its occurrence by Forest Region and forest type. White pine grows under a wide variety of conditions, with most volume occurring in mixedwood forest. The highest concentrations are in SE Ontario, SW Quebec, and the Maritime provinces. Key words: Forest inventory, Canada, white pine, tree volume, species distribution

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A multi-century eastern white pine tree-ring chronology developed from salvaged river logs and its utility for dating heritage structures in Canada's National Capital Region

Dendrochronologia ◽

10.1016/j.dendro.2014.02.001 ◽

2014 ◽

Vol 32 (2) ◽

pp. 120-126 ◽

Cited By ~ 1

Author(s):

Melissa Dick ◽

Trevor J. Porter ◽

Michael F.J. Pisaric ◽

Ève Wertheimer ◽

Peter deMontigny ◽

...

Keyword(s):

Tree Ring ◽

National Capital Region ◽

White Pine ◽

Eastern White Pine ◽

Tree Ring Chronology ◽

Capital Region ◽

Pine Tree ◽

National Capital

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Review of the large-sized species of the genus Eupiestus (Coleoptera: Staphylinidae: Piestinae), with notes on the adult feeding habit

Oriental Insects ◽

10.1080/00305316.2021.1988744 ◽

2021 ◽

pp. 1-17

Author(s):

Yoshihiro Senda

Keyword(s):

Feeding Habit ◽

Adult Feeding

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White pine and Scots pine tree-ring chronologies as indicators of climate-related non-native and native tree growth patterns in Estonia

BALTIC FORESTRY ◽

10.46490/bf491 ◽

2020 ◽

Vol 26 (2) ◽

Author(s):

Alar Läänelaid ◽

Samuli Helama

Keyword(s):

Tree Ring ◽

Scots Pine ◽

Pinus Strobus ◽

Summer Precipitation ◽

Growth Patterns ◽

Late Winter ◽

White Pine ◽

Growth Anomaly ◽

Pine Tree ◽

Negative Growth

Three tree-ring chronologies of white pine (Pinus strobus), a species which are non-native to Europe, were constructed for Suuremõisa, Jädivere and Järvselja sites in Estonia. These chronologies were related to instrumental climate records and Scots pine (P. sylvestris) chronologies from nearby sites. Growth rates of P. strobus exceeded those of P. sylvestris. The chronologies of the non-native and native pine species relatively well correlated with each other. Moreover, tree-ring growth of both species correlated positively with late-winter and spring (February–May) temperatures and negatively with spring (April) precipitation. While P. strobus growth was positively associated with summer precipitation, the growth of P. sylvestris remained positively related to the growing season temperatures. Both species exhibited a negative growth anomaly from 1939 to 1942. Keywords: Pinus strobus, Pinus sylvestris, dendroclimatology, Estonia

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My Emblem, The Pine

Thoreau and the Language of Trees ◽

10.1525/california/9780520294042.003.0012 ◽

2017 ◽

Author(s):

Richard Higgins ◽

Richard Higgins

Keyword(s):

American History ◽

Pinus Strobus ◽

American Identity ◽

White Pine ◽

Eastern White Pine ◽

Erect Posture ◽

Pine Tree

Thoreau felt a deep affinity for Pinus strobus, Eastern white pine, the tallest tree east of the Rockies. He called it the emblem of his life. He loved its erect posture, how its whorled branches jutt almost horizontal to its ramrod straight trunk. The pine was a sign of nature’s vigor. The scent of pines was an elixir to him. He identified with the pine’s wild spirit. Nothing stands up more free from blame than a pine tree. White pines played a big role in American history. Sought for masts by England, they became an early symbol of American identity. The tallest pines are not gone. Researchers have found 17 white pines in Massachusetts at least 160 feet.

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The Effect of Weather and the Physical Attributes of White Pine Leaders on the Behaviour and Survival of the White Pine Weevil, Pissodes strobi Peck, in Mixed Stands

The Canadian Entomologist ◽

10.4039/ent93721-9 ◽

1961 ◽

Vol 93 (9) ◽

pp. 721-741 ◽

Cited By ~ 19

Author(s):

C. R. Sullivan

Keyword(s):

Review Paper ◽

Control Measures ◽

White Pine ◽

Mixed Stands ◽

Pissodes Strobi ◽

Adult Feeding ◽

Physical Attributes ◽

Understory Trees ◽

Measurable Factors

Over a century ago Peck (4) observed that open-growing stands of white pine, Pinus strobus L., were subjected to greater weevil damage than were those growing in mixture with, and shaded by, other tree species. This observation, which was later corroborated by Graham (2) and MacAloney (3), suggested possibilities of silvicultural control of the insect by means of plantation growing of white pine in various kinds of mixtures. The results of this work were recently assessed in a review paper by Belyea and Sullivan (1), who concluded that further silvicultural control measures be curtailed until the physical and biological requirements of the insect were defined in terms of measurable factors of the environment. Investigations were carried out (6, 7) to establish the conditions of temperature, light, and moisture favourable for feeding, copulation, and oviposition of the adults, and development of the larvae. The results indicated that P. strobi is well adjusted to the environmental conditions in open stands of white pine, but that the limitations imposed by weather on weevil oviposition might be a major factor contributing to the inability of the insect. to adapt readily to the climate of many shaded stands. The present paper is an attempt to assess the role of weather and the physical characteristics of white pine leaders, hereafter called leaders, in limiting the successful invasion, by the weevil, of white pine stands growing as partially suppressed, understory trees. Emphasis is placed on providing an understanding of the differences in the climate of weevil habitats, adult feeding and oviposition behaviour, and survival of weevil populations in exposed and shaded stands of white pine. In addition, records were obtained for the purpose of forecasting differences in both the timing and amount of such acts as oviposition and feeding in populations in the two habitats.

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Stereo Electron Microscopy Applied to High Resolution Freeze-Etch Replicas

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100068527 ◽

1970 ◽

Vol 28 ◽

pp. 306-307

Author(s):

L. Andrew Staehelin

Keyword(s):

Electron Microscopy ◽

Plastic Deformation ◽

High Resolution ◽

Smooth Surfaces ◽

Small Particles ◽

Membrane Surfaces ◽

Wide Acceptance ◽

New Information ◽

Number Of Particles ◽

Small Holes

Freeze-etched membranes usually appear as relatively smooth surfaces covered with numerous small particles and a few small holes (Fig. 1). In 1966 Branton (1“) suggested that these surfaces represent split inner mem¬brane faces and not true external membrane surfaces. His theory has now gained wide acceptance partly due to new information obtained from double replicas of freeze-cleaved specimens (2,3) and from freeze-etch experi¬ments with surface labeled membranes (4). While theses studies have fur¬ther substantiated the basic idea of membrane splitting and have shown clearly which membrane faces are complementary to each other, they have left the question open, why the replicated membrane faces usually exhibit con¬siderably fewer holes than particles. According to Branton's theory the number of holes should on the average equal the number of particles. The absence of these holes can be explained in either of two ways: a) it is possible that no holes are formed during the cleaving process e.g. due to plastic deformation (5); b) holes may arise during the cleaving process but remain undetected because of inadequate replication and microscope techniques.

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