Tagged: fish

Sensationalising science: sometimes behind the sizzle is just fizzle - Ice Doctor

Victoria Metcalf Jul 25, 2014

If we believe the headlines we might expect to see aliens waving at us via telescopes within 20 years. How much harm does the sensationalism of science do? Image Source: Wikimedia Commons http://science1.nasa.gov/science-news/science-at-nasa/2001/ast07sep_2/ Accompanying the increasing permeation of science news into mainstream media, there’s an explosion of popular science media sites such as IFLScience. Should we … Read More

New Zealand’s native freshwater fish are becoming increasingly threatened - Waiology

Waiology Jun 06, 2014

By Jane Goodman New Zealand’s native freshwater fish are becoming increasingly threatened The conservation status of New Zealand freshwater fish was assessed in June 2013 using the New Zealand Threat Classification System. The threat ranking lists are often misconstrued as being ‘owned’ by the Department of Conservation. However, although the listing exercise for all New Zealand taxa is … Read More

A helping hand for migrating fish - Waiology

Waiology May 23, 2014

By Paul Franklin and Sjaan Bowie Many of New Zealand’s iconic freshwater fish species, such as whitebait and eels, undertake migrations between the sea and freshwater as part of their life-cycle. Whitebait, for example, lay their eggs in freshwater or estuaries before the larvae move out to sea after hatching (Figure 1). After a number of months growing at sea, … Read More

Water quality – What about the fish and the anglers? - Waiology

Waiology Oct 31, 2013

By Neil Deans New Zealand is blessed with an abundance and multitude of freshwaters which provide the habitat for an equally diverse array of species, including both native and introduced fish and wildlife. Some of these have intrinsic value; others are also valued because they provide food or recreational pursuit, or are indicators of a healthy environment. (Credit: … Read More

Effects of water quality on freshwater fish - Waiology

Waiology Oct 29, 2013

By David Rowe The presence and abundance of fish in our rivers depends on many factors, water quality being one. Water temperature, the amount of oxygen dissolved in the water, acidity (pH), ammonia concentration, and suspended sediment level can all influence the suitability of water for fish. When changes in land-use occur in river catchments, or pollutants enter waterways, … Read More

Rhombosolea retiaria: The freshwater flounder - Waiology

Waiology May 30, 2013

By Amber McEwan In lakes, rivers and estuaries throughout New Zealand, groups of aquatic flying carpets are mobilising and moving downstream towards the sea. Late autumn marks the time when a special species of New Zealand flatfish – the freshwater black flounder or patiki – embarks upon a spawning migration to the sea, with juveniles re-entering freshwater and migrating back … Read More

TOSP Episode 23: March 5th 2012 - The Sciblogs Podcast

Aimee Whitcroft Mar 06, 2012

Episode 23 of TOSP is _out_, yo! This week, aimee and Elf talk Mars, twisted radiowaves, a new livestock virus, the new number of neurons in a human brain (clue: it’s less than you might think), oxygen-generating biomaterial, SpeechJamming, meetings and IQ, using cellphone data following disasters, and the survival of the brightest. Read More

TOSP Episode 16: January 9th 2012 - The Sciblogs Podcast

Aimee Whitcroft Jan 09, 2012

Happy New Year! May 2012 be a wonderful year to you all. To start off the new year, aimee and Elf discuss last week’s announcement of the successful build of a temporal cloak, thorium’s potential as an alternative nuclear energy source and zombie bees! Also, we talk to fellow Sciblogger, … Read More