Posted on May 27, 2009 by glenlake
The DNR Fisheries Division will begin a fisheries survey of the Glen Lake system today. They will be surveying Big and Little Glen, and the Fisher Lakes for the next two weeks. If any of you are interested in observing the sampling efforts please feel free to approach any of the DNR boats and they will be happy to discuss the sampling techniques and talk about what they have caught.
If you have any questions about the survey please call Todd Kalish, Michigan Department of Natural Resources, Fisheries Division at 231-775-9727, ext 6070.
Filed under: Fisheries | Leave a Comment »
Posted on May 25, 2009 by glenlake
Written by Sarah Litch
“You can never step on the same beach twice.”
Our beaches were brought to us by the glaciers, the last of which receded 10,000 years ago leaving us with sand that is made up primarily of quartz, a little feldspar and even less magnetite with a sprinkling of garnet, calcite, ilmenite, hornblende and epidote. Our sand consists of rocks, crystals and lakeshells that have been eroded over long period of time by wind, water, and ice.
• Your beach is a dynamic landform, constantly in motion, ever changing, altered by wind and waves in a continual process of beach building and erosion. Seasonal cycles of sand deposition and loss dramatically affect the appearance of your beach from summer to winter and even from day to day. Most of the sand removed from winter beaches is deposited in small offshore sandbars and returned from the lake shallows to the shoreline by the gentler waves of summer. Thus the summer beach sand can rest a few hundred feet from the shore during the winter months. In the spring smaller and less powerful waves begin to rebuild your beach by lifting the grains of sand onto the shore while being too weak to haul them back out to the lake again.
Filed under: Water Resources | Leave a Comment »
Posted on May 10, 2009 by glenlake
Every day is earth day, but sometime ‘she’ needs a little help from us to protect her from the grip of invasive species. One that has come to recent attention is Phragmites, a noxious weed that is taking over shorelines, canals, drainage ditches, wetlands and prairies in the Midwest.
This invasive weed has taken over about 100,000 acres of wetland in Michigan.
Phragmites on Westman Road
It marches from marsh to marsh and from one roadside ditch to another and chokes out other vegetation in wetlands, including cattails, bulrushes and sedges. Phragmites disrupt the food web by destroying food bearing native plants that reduces the number of fur bearing animals, insects, butterflies, non-migratory songbirds, reptiles, amphibians and other wildlife that inhabit wetlands.
Phragmites have been in Michigan and other states for centuries, but there is evidence the weed has hybridized with an aggressive species from Australia. Scientists believe the Australian Phragmite was brought to the United States as an ornamental plant and eventually cross-pollinated with local Phragmites. Scientists differ as to why they have suddenly raged out of control.
Kurt Getsinger, a research biologist with the U.S. Army Corps of Engineers in Mississippi, said low water levels in the Great Lakes over the past few years could partly be to blame. “During low water periods the native wetland species decline, however, phragmites have the ability to become established in that situation — quickly expanding its range. They are taking advantage of the low lake levels and going into new areas, crowding out other vegetation, and that’s not good.”
Filed under: Invasives, Phragmites | Leave a Comment »