Tuesday, December 16, 2008

Wildflowers

A group of flowers known as spring ephemerals begins the yearly show. Ephemerals are so named because they appear above ground only in late winter and early spring, then flower, fruit, and die back within a short two month period. They emerge from February through April, and are gone (dormant) by May or June.

This remarkable group of plants is adapted to the rhythm of the overstory trees. Ephemerals appear before deciduous trees leaf out, when full sunlight is streaming to the forest floor. This is also a time when soil moisture is high and soil nutrients are plentiful due to the decomposition of tree leaves that fell the previous autumn. The ephemerals exploit these conditions—they flower, fruit, and their above-ground parts decay before summer gets into full swing. The peak of spring wildflower blooming usually occurs in mid- to late-April at lower elevations in the park, and a few weeks later on the highest peaks.

Spring ephemerals include flowers such as trillium (the park has 10 different species), lady slipper orchids, showy orchis, crested dwarf iris, fire pink, columbine, bleeding heart, phacelia, jack-in-the-pulpit, little brown jugs, and violets, to name just a few. Suggested wildflower walks.

Each spring, the park hosts the Spring Wildflower Pilgrimage, a week-long festival of programs and guided walks and hikes that explore the wondrous diversity of life in the park.

Adult Halloween Costumes

Monday, December 15, 2008

Waterfall

A waterfall is typically a physical formation resulting from water, frequently in the form of a stream, flowing over an erosion-resistant rock formation that forms a nickpoint, or unexpected break in elevation.

Some waterfalls form in mountain environments in which the erosive water force is elevated and stream courses may be subject to sudden and catastrophic change. In such cases, the waterfall may not be the end product of many years of water action in excess of a region, but rather the result of moderately sudden geological processes such as landslides, faults or volcanic action. In cold places, snow will build up in winter and melt and twist into a waterfall in summer. Water falls can be cool.


Adult Halloween Costumes