Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Climate Change Could Drive Native Fish Out of Wisconsin Waters

17.08.2011
The cisco, a key forage fish found in Wisconsin’s deepest and coldest bodies of water, could become a climate change casualty and disappear from most of the Wisconsin lakes it now inhabits by the year 2100, according to a new study.

In a report published online in the journal Public Library of Science One, researchers from the University of Wisconsin-Madison and the Wisconsin Department of Natural Resources project a gloomy fate for the fish -- an important food for many of Wisconsin’s iconic game species -- as climate warms and pressure from invasive species grows.

In the case of the cisco, a warming climate poses a much greater risk than do exotic species such as the rainbow smelt, the invasive that most threatens the deep-dwelling cisco by eating its eggs and young, the Wisconsin researchers say.

“By 2100, 30 to 70 percent of cisco populations could be extirpated in Wisconsin due to climate change,” says Sapna Sharma, a researcher at the UW-Madison Center for Limnology and the lead author of the new study, which predicts the decline of the cisco according to a number of possible future climate scenarios. “Cisco are much more at risk due to climate change rather than interactions with exotic species.”

The cisco, sometimes called lake herring, is now found in about 170 inland lakes in Wisconsin. A member of the trout and salmon family, it is also found in the Great Lakes and once formed the basis of an important commercial fishery before overfishing and the invasion of the alewife, rainbow smelt and sea lamprey caused its populations to diminish dramatically.

Sharma described the cisco as a sentinel species: “It’s one of the most vulnerable fish species in Wisconsin because it depends on cold water,” says Sharma, an aquatic ecologist and statistical modeling expert. “Cisco aren’t the most important socioeconomic species out there, but they are a good indicator of water quality.”

From an ecological perspective, when fish species are displaced by changes in water temperature or for other reasons, it opens the door to other species, especially exotic invasives. The ecological niche occupied by the cisco is also favored by the rainbow smelt, a foreign species that has been in the Great Lakes for decades but that is only now making its way into Wisconsin’s inland lakes.

“The range expansion of invasive species with climate change could be a problem,” Sharma explains. “It could change the composition of species we’re familiar with in Wisconsin. It may be that just a few species dominate. The species composition wouldn’t just be different, there could also be less biodiversity.”

In addition to the ecological change that would be prompted by a warmer Wisconsin climate, Sharma notes, the impoverishment of aquatic ecosystems will have potential socio-economic implications, especially in a setting like Wisconsin where recreational fishing is an iconic pastime, not to mention an important industry.

“This could very well impact the fishing experiences we have,” avers the Wisconsin researcher.

In addition to Sharma, co-authors of the new Public Library of Science One report include M. Jake Vander Zanden and John J. Magnuson, also of UW-Madison, and John Lyons of the Wisconsin Department of Natural Resources.

Terry Devitt (608) 262-8282, trdevitt@wisc.edu

Sapna Sharma | Newswise Science News
Further information:
http://www.wisc.edu

More articles from Studies and Analyses:

nachricht Study relating to materials testing Detecting damages in non-magnetic steel through magnetism
23.07.2018 | Technische Universität Kaiserslautern

nachricht Innovative genetic tests for children with developmental disorders and epilepsy
11.07.2018 | Christian-Albrechts-Universität zu Kiel

All articles from Studies and Analyses >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Color effects from transparent 3D-printed nanostructures

New design tool automatically creates nanostructure 3D-print templates for user-given colors
Scientists present work at prestigious SIGGRAPH conference

Most of the objects we see are colored by pigments, but using pigments has disadvantages: such colors can fade, industrial pigments are often toxic, and...

Im Focus: Unraveling the nature of 'whistlers' from space in the lab

A new study sheds light on how ultralow frequency radio waves and plasmas interact

Scientists at the University of California, Los Angeles present new research on a curious cosmic phenomenon known as "whistlers" -- very low frequency packets...

Im Focus: New interactive machine learning tool makes car designs more aerodynamic

Scientists develop first tool to use machine learning methods to compute flow around interactively designable 3D objects. Tool will be presented at this year’s prestigious SIGGRAPH conference.

When engineers or designers want to test the aerodynamic properties of the newly designed shape of a car, airplane, or other object, they would normally model...

Im Focus: Robots as 'pump attendants': TU Graz develops robot-controlled rapid charging system for e-vehicles

Researchers from TU Graz and their industry partners have unveiled a world first: the prototype of a robot-controlled, high-speed combined charging system (CCS) for electric vehicles that enables series charging of cars in various parking positions.

Global demand for electric vehicles is forecast to rise sharply: by 2025, the number of new vehicle registrations is expected to reach 25 million per year....

Im Focus: The “TRiC” to folding actin

Proteins must be folded correctly to fulfill their molecular functions in cells. Molecular assistants called chaperones help proteins exploit their inbuilt folding potential and reach the correct three-dimensional structure. Researchers at the Max Planck Institute of Biochemistry (MPIB) have demonstrated that actin, the most abundant protein in higher developed cells, does not have the inbuilt potential to fold and instead requires special assistance to fold into its active state. The chaperone TRiC uses a previously undescribed mechanism to perform actin folding. The study was recently published in the journal Cell.

Actin is the most abundant protein in highly developed cells and has diverse functions in processes like cell stabilization, cell division and muscle...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

LaserForum 2018 deals with 3D production of components

17.08.2018 | Event News

Within reach of the Universe

08.08.2018 | Event News

A journey through the history of microscopy – new exhibition opens at the MDC

27.07.2018 | Event News

 
Latest News

Smallest transistor worldwide switches current with a single atom in solid electrolyte

17.08.2018 | Physics and Astronomy

Robots as Tools and Partners in Rehabilitation

17.08.2018 | Information Technology

Climate Impact Research in Hannover: Small Plants against Large Waves

17.08.2018 | Life Sciences

VideoLinks
Science & Research
Overview of more VideoLinks >>>