The study summarized the results from a ten year tagging program called the Tagging of Pacific Predators (TOPP). The TOPP program deployed 4,306 tags on 23 species in the North Pacific Ocean resulting in data that covers 265, 386 days-an extraordinary scale by industry standards. Both TOPP and FMAP were projects under the recently concluded Census of Marine Life program.
TOPP scientists have been tagging marine predators for ten years. Species like sharks, whales, tuna, seals and marine turtles are caught, tagged with an electronic device that keeps track of the animals’ location, and released back into their natural habitat. Their movements are then monitored by researchers at several institutions in California. Dr. Jonsen helped synthesize that data over the last 2 years right here at Dalhousie.
“We wanted to be able to build a story on behalf of these marine predators. Tagging allows us to answer questions like, ‘where are they going’, ‘how long are they there for’, and ‘how long does it take them to get there.’ By tracking the movements of marine predators, we can build a map of the important ‘traffic routes’ in the ocean, something we haven’t been able to do until now,” Dr. Jonsen explains.
What the scientists discovered through this study was that that the California Current large marine ecosystem is a significant habitat for species like tunas, sharks, salmon and sea turtles.
The data collected also indicates these species are quite predictable in their movements and time their migrations so they arrive in the California Current when it is most productive. Species, such as tunas and sharks, residing in the California Current migrate north and south seasonally within this region as it warms and cools.
The study also indicates that predators, like the leatherback turtle, travel back and forth from Indonesia and Monterey Bay, California each year like clockwork.
Jonsen believes that although there is still a lot more work left to be done on predicting the movements of marine predators, this study is a step in the right direction.
“Knowing where and when species overlap is important information that can be used to manage and protect these large predators and their ecosystems from human activities.”
Katie McDonald | Newswise Science News
Newly designed molecule binds nitrogen
23.02.2018 | Julius-Maximilians-Universität Würzburg
Atomic Design by Water
23.02.2018 | Max-Planck-Institut für Eisenforschung GmbH
A newly developed laser technology has enabled physicists in the Laboratory for Attosecond Physics (jointly run by LMU Munich and the Max Planck Institute of Quantum Optics) to generate attosecond bursts of high-energy photons of unprecedented intensity. This has made it possible to observe the interaction of multiple photons in a single such pulse with electrons in the inner orbital shell of an atom.
In order to observe the ultrafast electron motion in the inner shells of atoms with short light pulses, the pulses must not only be ultrashort, but very...
A group of researchers led by Andrea Cavalleri at the Max Planck Institute for Structure and Dynamics of Matter (MPSD) in Hamburg has demonstrated a new method enabling precise measurements of the interatomic forces that hold crystalline solids together. The paper Probing the Interatomic Potential of Solids by Strong-Field Nonlinear Phononics, published online in Nature, explains how a terahertz-frequency laser pulse can drive very large deformations of the crystal.
By measuring the highly unusual atomic trajectories under extreme electromagnetic transients, the MPSD group could reconstruct how rigid the atomic bonds are...
Quantum computers may one day solve algorithmic problems which even the biggest supercomputers today can’t manage. But how do you test a quantum computer to...
For the first time, a team of researchers at the Max-Planck Institute (MPI) for Polymer Research in Mainz, Germany, has succeeded in making an integrated circuit (IC) from just a monolayer of a semiconducting polymer via a bottom-up, self-assembly approach.
In the self-assembly process, the semiconducting polymer arranges itself into an ordered monolayer in a transistor. The transistors are binary switches used...
Breakthrough provides a new concept of the design of molecular motors, sensors and electricity generators at nanoscale
Researchers from the Institute of Organic Chemistry and Biochemistry of the CAS (IOCB Prague), Institute of Physics of the CAS (IP CAS) and Palacký University...
15.02.2018 | Event News
13.02.2018 | Event News
12.02.2018 | Event News
23.02.2018 | Physics and Astronomy
23.02.2018 | Health and Medicine
23.02.2018 | Physics and Astronomy