Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Saving space

16.11.2006
Latitude's not enough

According to a recent study in Ecological Monographs, predicting the impact of climate change on organisms is much more complicated than simply looking at species northern and southern range limits. Studying the ecologically important California Sea Mussel (Mytilus californianus), Brian Helmuth (University of South Carolina) and colleagues from the University of California - Santa Barbara, the University of British Columbia – Vancouver, and Oregon State University measured body temperatures of this mussel along most of its range, from Washington to Southern California.

"Mosaic patterns of thermal stress in the rocky intertidal zone: Implications for climate change," suggests that conserving areas based on a few similarities including location, may not be enough, as variations in temperature and other variables can turn what would seem like an ideal and "typical" environment into one that's decidedly different from nearby sites.

As global climate changes occur, "the role of organism temperature in driving species distribution patterns has assumed a further sense of urgency," say the authors.

Like terrestrial ectotherms (organisms that can not regulate their body temperature only through outside sources such as the sun), the body temperatures of intertidal invertebrates are driven by multiple factors in their environment. Solar radiation, wind speed, humidity, air and ground temperatures, along with the organisms' own shape, color and mass affect its body temperature.

"In many cases, science has a poor understanding of how physiologically relevant environmental factors vary in space and time. We know little of how 'climate' is translated into patterns of body temperature, especially at scales important to organisms," says Helmuth.

Mussel distribution and physiology is known to be negatively affected by high-temperature stress.

"The thermal environment must be considered from the perspective of the organism's interaction with the physical environment, as well as the physiological response of that organism to the environment," according to the study.

Spanning five years and almost 1000 miles (2000 km) the scientists explored how body temperatures change across latitudes, and the role of splashing waves on the mussels. Using sensors placed in several mussel-strong regions throughout the organisms' territory, the scientists were able to study the temperature changes the mussels experienced on a day to day basis, as well as on a yearly basis. They found that tides as well as wave action impact the temperature ranges the species experience, with varying tolerances depending on where the mussels live.

Helumth and his colleagues found several "hot spots," - areas warmer than expected - and "cold spots" - sites where daily minimal temperatures ran lower than other sites around the same latitude, creating a picture of complex thermal mosaics rather than simple latitudinal gradients.

Importantly, they found that animal temperatures were as hot at sites well within the species range as they were at sites far to the south, suggesting climate change may cause damage not just at range edges, where scientists usually look for such effects, but also at other "hot spots" well within species ranges.

"Our results stress the importance of examining patterns of environmental variables at levels relevant to the organisms, and in forecasting the impacts of climate changes across the species' range," state the researchers.

Annie Drinkard | EurekAlert!
Further information:
http://www.esa.org

More articles from Ecology, The Environment and Conservation:

nachricht Waste in the water – New purification techniques for healthier aquatic ecosystems
24.07.2018 | Eberhard Karls Universität Tübingen

nachricht Plenty of habitat for bears in Europe
24.07.2018 | Deutsches Zentrum für integrative Biodiversitätsforschung (iDiv) Halle-Jena-Leipzig

All articles from Ecology, The Environment and Conservation >>>

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 >>>