gradient
goingon
TODAY IS Saturday December 20th


Late thaw, cool spring impact lake aquatic plant life
Tuesday May 20, 2014 2:13pm

INDIANAPOLIS - This year’s late winter thaw and cool spring weather have slowed the growth of aquatic plants in northeast Indiana lakes.

DNR officials say this should delay and may even reduce the need to use chemical herbicides to control vegetation in lakes where there are such issues.

“The amount of weed control done each year has a lot to do with the weather,” said Jed Pearson, a DNR fisheries biologist. “Water temperature, the number of sunny days, and rainfall can have a big effect on aquatic plant growth.”

The seasonal timing of herbicide applications also depends on water temperature and various growing stages of the plants.

“We typically see fluctuations in plant growth from year to year,” Pearson said. “That makes it difficult for local lake associations and lake residents to plan and fund their weed control programs.”

It also can create some common misconceptions about plant ecology.

“Just because plants are more abundant one year and cover wider areas doesn’t mean a lake is getting polluted,” Pearson said. “And just because fewer plants are growing this year doesn’t mean they won’t be back next year.”

To show how much aquatic plants vary from year to year, Pearson cites data that he and other DNR biologists have collected at 47 lakes over the past four years.

On a region-wide basis, plant coverage was greatest in 2012, a year marked by an early spring and record warm temperatures with less rainfall. As a result, lakes were much clearer than normal. Aquatic plants depend on how deeply sunlight can penetrate. Clearer lakes tend to have more vegetation and at greater depths.

In 2012 leafy plants typically covered 75 percent of the area where they could potentially grow, an area biologists call the littoral zone.

In contrast, leafy aquatic plants covered an average of 65 percent of the littoral zone in lakes during 2013 after a cold and wet spring.

The number of species also varied. More species grew per site in 2012 than 2013. Moderate numbers of were present in 2010 and 2011.

“But not all species followed the same trend,” Pearson said. “Coontail, one of the most common species, was more abundant in 2013 even though overall plant coverage was less. Plants respond differently to different conditions.”

So what does all this mean?

“Lake residents need to take a long-term view of plant management and not over-react to short-term yearly changes,” Pearson said.

(12-20-2014) • Former Teacher Wins Federal Lawsuit Against Diocese
LOCATION OF NEWS ITEM: Fort Wayne
(12-20-2014) • LCSD Post Info On Facebook For Wanted Suspect
LOCATION OF NEWS ITEM: LaGrange, IN
(12-20-2014) • Six Taken To Cameron After Crash South Of Fremont
LOCATION OF NEWS ITEM: SR 827 and 400 North • Fremont, IN
(12-19-2014) • Berkesch Wins $3,215 On Game Show
LOCATION OF NEWS ITEM: Fremont, IN
(12-19-2014) • Lori Supports Road Funding Proposal
LOCATION OF NEWS ITEM: Lansing, MI.
(12-19-2014) • Number of Indiana jobs grows in November; jobless rate steady
LOCATION OF NEWS ITEM: INDIANAPOLIS
(12-19-2014) • Man killed in crash with semi near New Paris
LOCATION OF NEWS ITEM: SR 15 south of US 6
(12-19-2014) • Flu Reports Prompt DeKalb Health Visitor Restrictions
LOCATION OF NEWS ITEM: Auburn, IN
(12-18-2014) • Legislature To Vote On Road Funding
LOCATION OF NEWS ITEM: Lansing, MI.
(12-18-2014) • County Commission Takes Care Of Business
LOCATION OF NEWS ITEM: Centreville, MI
(12-18-2014) • Three Arrested In Drug Sting
LOCATION OF NEWS ITEM: Sturgis, MI
(12-18-2014) • Coldwater Man Arrested After Crashing And Fleeing
LOCATION OF NEWS ITEM: Coldwater, MI
(12-18-2014) • Branch County Man Charged With Assault And Arson
LOCATION OF NEWS ITEM: Quincy, MI
(12-18-2014) • Indiana budget forecast cuts current tax year by $129 million
LOCATION OF NEWS ITEM: INDIANAPOLIS
(12-18-2014) • Nottawa Township Boys Dies From Injuries In Accident
LOCATION OF NEWS ITEM: Nottawa Township - St. Joseph Co. - MI
(12-18-2014) • Pence Announces Over 2,100 New Jobs For Indiana
LOCATION OF NEWS ITEM: Indianapolis
(12-18-2014) • Commission Hears Road Project Update; Holding On Changing Stop Lights
LOCATION OF NEWS ITEM: Sturgis, MI
(12-17-2014) • Coldwater To Be Home For New Pork Processing Plant
LOCATION OF NEWS ITEM: Coldwater, MI
(12-17-2014) • Morgan Olsen Keeps Moving Forward
LOCATION OF NEWS ITEM: Sturgis, MI
(12-17-2014) • Car Hits House When Brakes Fail
LOCATION OF NEWS ITEM: Sturgis, MI
(12-17-2014) • Three People Injured In Multi-Vehicle crash
LOCATION OF NEWS ITEM: Newberg Township - Cass Co., MI
(12-17-2014) • LCSD announces departmental award winners
LOCATION OF NEWS ITEM: LaGrange, IN
(12-17-2014) • Elderly woman seriously injured in LaGrange crash
LOCATION OF NEWS ITEM: Townline Rd and Steuben Street • LaGrange, IN
(12-17-2014) • Two Arrested for Heroin Possession
LOCATION OF NEWS ITEM: Coldwater, MI
(12-17-2014) • Home Search Results In Three Arrests
LOCATION OF NEWS ITEM: Sturgis Township - St. Joseph Co. MI
(12-17-2014) • Two PH School Board Members Say Goodbye
LOCATION OF NEWS ITEM: Prairie Heights
(12-17-2014) • Three arrested during drug stakeout in LaGrange
LOCATION OF NEWS ITEM: South Poplar Street • LaGrange, IN
(12-17-2014) • Two men captured following pursuit in Kendallville
LOCATION OF NEWS ITEM: Kendallville, IN
(12-17-2014) • Fire At Maplecrest Motel
LOCATION OF NEWS ITEM: Sturgis, MI
(12-17-2014) • Pork Processing Plant Coming To Branch County
LOCATION OF NEWS ITEM: Coldwater, MI
(12-17-2014) • Fremont Woman Appearing On Let's Make A Deal
LOCATION OF NEWS ITEM: Fremont, IN
(12-16-2014) • LaGrange Commissioners buy new dumpt truck, ipads
LOCATION OF NEWS ITEM: LaGrange County Office Building • LaGrange, IN
(12-16-2014) • Middlebury woman dies in US 20 crash
LOCATION OF NEWS ITEM: US 20 near CR 33 • Middlebury, IN
(12-16-2014) • LaGrange, Steuben eligible for SBA disaster loans
LOCATION OF NEWS ITEM: ATLANTA
(12-16-2014) • Pennsylvania Pork Company Bringing 800 Jobs To Coldwater
LOCATION OF NEWS ITEM: Dearth Center • Coldwater, MI
(12-16-2014) • Confrontation leads to man's beating in LaGrange
LOCATION OF NEWS ITEM: 215 W. South Street • LaGrange, IN
(12-16-2014) • 20 kids shop with LaGrange Co. cops
LOCATION OF NEWS ITEM: Howe, IN





Contact WBET
STURGIS269/651-WBET
COLDWATER517/278-WBET
wbet@wbetfm.com

pfc

businesses