Maui’s dolphins’ survival near ‘point of no return’

Monday, April 30th, 2012 | hamvi58p | No Comments

Maui Dolphin

CLOSE TO EXTINCTION: A Maui dolphin and her calf.
The survival of the critically endangered Maui’s dolphin species will soon be “past the point of no return” unless emergency action is taken, an expert says.

What is believed to be a Maui’s dolphin was found dead by a member of the public in Taranaki last week. The dolphin was found on a beach near Pungarehu, south of New Plymouth.

It was collected by the Conservation Department and taken to Massey University for an autopsy.

It is not yet known if the dead dolphin is a Maui, of which only 54 are believed to be left, or a closely related Hector’s dolphin. The latest population survey found a couple of Hector’s mingling further north than usual with Maui’s dolphins.

If confirmed, it would be the second Maui’s dolphin found dead in Taranaki this year. Another, a female, was accidentally killed by a fisherman in January.

Otago University zoology professor Liz Slooten said the species was at a level where any loss would have a huge impact.

“Basically all bets are off already, natural processes could take them away. If we stopped catching them in fishing nets tomorrow we would still hold our breath … so we really need to pull out all the stops or soon we’ll go past the point of no return.”

Set net bans are imposed on the coastline between Dargaville to north Taranaki.

“As a biologist it’s really frustrating. I’ve done surveys there and wrote an article in 2005 to say the Maui is going much further south than the protected area,” Prof Slooten said.

The Fisheries Act included allowances for emergency protection measures to be put in place “literally overnight” in cases of sudden stock declines or unprecedented events, she said.

Submissions on laws to further protect the Maui’s dolphins closed on Friday. The laws want to extend the current ban on set nets along the west coast of the North Island and also extend a marine mammal sanctuary.

The fishing industry will argue against the ban, saying the dolphins have not been seen in the Taranaki area for years.

Keith Mawson, of Egmont Seafoods in Taranaki, earlier told the Seafood Industry Council that a proposal to extend the set net ban was a knee-jerk reaction. A ban would be disappointing for the fishing community, which was being used as a “scapegoat”, he said. By Michelle Robinson and Shane Cowlishaw.

– © Fairfax NZ News

Seven Equations that Changed the World

Wednesday, April 25th, 2012 | STEPHEN BRONI | No Comments

Having trouble  seeing the relevance of all those formulae  in maths?

“THE alarm rings. You glance at the clock. The time is 6.30 am. You haven’t even got out of bed, and already at least six mathematical equations have influenced your life. The memory chip that stores the time in your clock couldn’t have been devised without a key equation in quantum mechanics. Its time was set by a radio signal that we would never have dreamed of inventing were it not for James Clerk Maxwell’s four equations of electromagnetism. And the signal itself travels according to what is known as the wave equation.

We are afloat on a hidden ocean of equations. They are at work in transport, the financial system, health and crime prevention and detection, communications, food, water, heating and lighting. Step into the shower and you benefit from equations used to regulate the water supply. Your breakfast cereal comes from crops that were bred with the help of statistical equations. Drive to work and your car’s aerodynamic design is in part down to the Navier-Stokes equations that describe how air flows over and around it. Switching on its satnav involves quantum physics again, plus Newton’s laws of motion and gravity, which helped launch the geopositioning satellites and set their orbits. It also uses random number generator equations for timing signals, trigonometric equations to compute location, and special and general relativity for precise tracking of the satellites’ motion under the Earth’s gravity.

Without equations, most of our technology would never have been invented. Of course, important inventions such as fire and the wheel came about without any mathematical knowledge. Yet without equations we would be stuck in a medieval world.

Equations reach far beyond technology too. Without them, we would have no understanding of the physics that governs the tides, waves breaking on the beach, the ever-changing weather, the movements of the planets, the nuclear furnaces of the stars, the spirals of galaxies – the vastness of the universe and our place within it.

There are thousands of important equations. The seven I focus on here – the wave equation, Maxwell’s four equations, the Fourier transform and Schrödinger’s equation – illustrate how empirical observations have led to equations that we use both in science and in everyday life”.

Intrigued? 

Read  more here.

http://www.newscientist.com/article/mg21328516.600-seven-equations-that-rule-your-world.html

There is a cool  video clip to watch too!

April Update

Friday, April 20th, 2012 | hamvi58p | No Comments

Dear OUASSA students

Knowledge Forum:  We have just completed another round of statistics analysis based on the work you are doing in Knowledge Forum. The good news is that some of you are making a genuine effort to involve yourselves in the on-line discussions either by providing interesting notes, building-on and/or annotating the notes of others. However, there are quite a few of you  who are not meeting  the commitment of just 1 post per week. If you are having technical difficulties getting into Knowledge Forum  you need to let us know right away so we can try fix it from this end.

There are a number of different views that you can be contributing.  Primarily the focus for you should be on building up project related discussions based in your Project A groups (Marine Science, Zoology, Physics and Maths).

Towards the end of May we will be asking each of you to synthesise  your Project A discussions in a Synthesis Post. In this post you will identify the knowledge built for you from the discussion.   So you have approximately 4 weeks to get yourselves involved!  We will provide the instructions for this task soon.

Don’t forget, there are also views on the main curriculum areas (biology, Chemistry and Physics) where you can find Achievement Objectives, ask questions, request help etc and we will gladly support you.  The introductory exercise views on three world problems are still up and running and actively being contributed to be some of you. And there are two more recent views on Knowledge Building and Knowledge Forum Support. You are free to contribute to any or all of these views.

Please remember that the expectation we have of you is one contribution per week! That equates to about 20-30mins input.

http://knowledgeforum1.otago.ac.nz/login

OUASSA Resource Site:  This is a dynamic site that offers useful resources and links to all things Science related.  We recently had some pleasing feedback stating how great the site has been for a Year 13 student and how it will be his go-to site for Year 13 curriculum support. It is hoped that you are utilising this resource also. Your feedback would be appreciated.  https://blogs.otago.ac.nz/ouassa/ 

Medical Information:  As requested via email: please be sure to send Kate details of any medical conditions you have. If  none, you still need to reply with your Doctor`s name and contact telephone number.  This information is important for our Health and Safety responsibilities while you are in our care in July.  It is treated as confidential.

Travel Bookings:  There are just 5 students left yet to confirm their travel bookings through Kylie at Orbit House of Travel.  If you have not had a FINAL itinerary that you have accepted from Kylie you will need to check your emails and reply to her or email Kate directly at ouassa@otago.ac.nz.

Any other requests or questions, we are here to help so please don’t hesitate to email us.

Kind regards,

The OUASSA Team

 

101Science.com

Tuesday, April 17th, 2012 | hamvi58p | No Comments

http://101science.com/

This website has a huge quantity of resources and links to some really fasinating sites.  This site would be a good go-to site for background science reading, information gathering and for studying just some of what you will be covering in your classes.

The site covers Biology, Chemistry, Physics, Maths, Electronics and even Photography.

Cell Animation – TED

Monday, April 16th, 2012 | hamvi58p | No Comments

http://www.ted.com/talks/david_bolinsky_animates_a_cell.html

This is a very iinteresting clip from the TED talks. Interesting for keen biologists and students with an interest in garphics, animations, etc.

Medical animator David Bolinsky presents 3 minutes of stunning animation that show the bustling life inside a cell.

David Bolinsky and his team illustrate scientific and medical concepts with high-drama animation. You’ve never seen the life of a cell quite like this.

Each of us has about 100,000 [kinesins] running around, right now, inside each one of your 100 trillion cells. So no matter how lazy you feel, you’re not really intrinsically doing nothing.” (David Bolinsky)

Was Human Evolution Caused by Climate Change ?

Wednesday, April 11th, 2012 | STEPHEN BRONI | No Comments

Neanderthals at the cave site of Trou Al'Wesse in Belgium, clinging on as climate deteriorated. (Credit: Digital painting by James Ives)

Neanderthals at the cave site of Trou Al'Wesse in Belgium, clinging on as climate deteriorated. (Credit: Digital painting by James Ives)

Although an African origin of the modern human species is generally accepted, the evolutionary processes involved in the speciation, geographical spread, and eventual extinction of archaic humans outside of Africa are much debated. An additional complexity has been the recent evidence of limited interbreeding between modern humans and the Neandertals and Denisovans (a newly discovered group from Siberia). Modern human migrations and interactions began during the buildup to the Last Glacial Maximum, starting about 100,000 years ago. By examining the history of other organisms through glacial cycles, valuable models for evolutionary biogeography can be formulated. According to one such model, the adoption of a new refugium by a subgroup of a species may lead to important evolutionary changes.

   “Ultimately, this model explains why Homo sapiens as a species are here and the archaic humans are not.” Dr J.R. Stewart

The research also leads to interesting conclusions as to how and why Neanderthals, and indeed the Denisovans, evolved in the first place.

Check out the full article here

http://www.sciencemag.org/content/335/6074/1317.full

An Introduction to Practical Electronics: Resource

Wednesday, April 4th, 2012 | STEPHEN BRONI | No Comments

Thanks to Lynne Newell from FutureIntech for this link

http://www.techideas.co.nz/ 

An introduction to Practical Electronics, Microcontrollers and Software Design is a PDF book (800 pages+ and growing)  written by  Bill Collis from Mount Roskill Grammar School for students  who are starting out in electronics. It is based around the PCB CAD software Eagle, the ATMEL AVR microcontroller and the BASCOM-AVR cross compiler. It aims to help students use software like Eagle and Sketchup for their chosen projects, and how to write and plan successful code using statechart principles. There are many examples of block diagrams, circuits, layouts, flowcharts, statecharts and code in the book for many different interfaces and products.

http://www.techideas.co.nz/