![]() Geologic processes that anyone could see during his or her lifetime had acted much the same way throughout earth history. It was not necessary to invoke extraordinary events or “catastrophes” to explain the past. could, over long periods of time, leave behind the rock record we see today. Hutton proposed that modern-day Earth processes - such as erosion, sedimentation, volcanism, etc. ![]() ![]() “The present is the key to the past.” This well-known geological axiom was first championed by Scottish naturalist James Hutton in the late eighteenth century. Reproduced from the Monterey Bay Paleontological Society Bulletin, July–September, 2004. Information on controversies in the public arena relating to evolutionīy Frank Perry, Research Associate, Santa Cruz Museum of Natural History.Alignment with the Next Generation Science Standards.The big issues – Pacing, diversity, complexity, and trends.Macroevolution – Evolution above the species level.Microevolution – Evolution within a population.Mechanisms: the processes of evolution – Selection, mutation, migration, and more.The history of life: looking at the patterns – Change over time and shared ancestors.An introduction to evolution: what is evolution and how does it work?.It is valued on plantations for its fast growth and utility as both a source of construction lumber as well as wood pulp in the paper industry. Although this tree is widely cultivated on plantations, natural stands of Radiata Pine are frequently infected by a fungal disease known as Pine Pitch Canker.Ĭommon Uses: Veneer, plywood, paper (pulpwood), boxes/crates, and construction lumber.Ĭomments: In the southern hemisphere, where pines are to a large extent absent, Radiata Pine is the most commonly planted and cultivated pine. Cessation of any current conservation programs would likely result in a vulnerable or endangered Red List status. Sustainability: This wood species is not listed in the CITES Appendices, but is reported by the IUCN as being conservation dependent. Prices should be moderate for an imported lumber, though most likely more expensive than domestic pines/softwoods. Pricing/Availability: Radiata Pine is grown almost exclusively on plantations-most notably in Chile, Australia, and New Zealand. See the articles Wood Allergies and Toxicity and Wood Dust Safety for more information. Odor:Radiata Pine has a faint, resinous odor while being worked.Īllergies/Toxicity: Working with pine has been reported to cause allergic skin reactions and/or asthma-like symptoms in some people. Workability: Radiata Pine works well with both hand and machine tools. The sapwood is readily treated with preservatives and is used in exterior applications. Rot Resistance:The heartwood is rated as non-durable to perishable in regards to decay resistance. Grain/Texture:Straight grained with a medium, even texture.Įndgrain: Medium-large resin canals, very numerous and evenly distributed, mostly solitary earlywood to latewood transition gradual (with very wide growth rings), color contrast moderate to low tracheid diameter medium-large. Radiata Pine lumber is plantation-grown, and generally has very wide growth rings and is knot-free. Shrinkage:Radial: 3.4%, Tangential: 6.7%, Volumetric: 10.7%, T/R Ratio: 2.0Ĭolor/Appearance: Heartwood is light brown, wide sapwood is a paler yellowish white, and is distinct from the heartwood. Common Name(s): Radiata Pine, Monterey Pine, Insignis Pineĭistribution: Native to central and southern coastal California Īlso widely planted throughout the southern hemisphere
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