Profesor Steffens takes Senator Steve Fielding to task for climate ignorance

A few weeks ago we posted about how Australian Senator Fielding attempted to convince the Australian senate that global warming didn’t exist by questioning the link between global warming and CO2 using a few highly questionable graphs and cherry picked science (Fielding the hard questions? Not likely). Along with Bob Carter (who seems to be … Continue reading Profesor Steffens takes Senator Steve Fielding to task for climate ignorance

Caribbean lionfish invasion

A new Reef Site in Coral Reefs (Green and Cote 2009) describes the striking densities of non-native lionfish on coral reefs in the Bahamas. Lionfish (Pterois volitans), a predator from the central and western Pacific ocean, were first sighted in 1992 off Florida and have been spreading rapidly throughout the Caribbean (USGS Nonindigenous Aquatic Species Database 2009). On deep offshore reefs off of North Carolina, they are now the second most abundant fish (Whitfield et al. 2007). Continue reading Caribbean lionfish invasion

Where have all the big fish gone? Part II: A case study from the Florida Keys

Following on from two great posts by John and Albert on Carribean reef fish decline and coral collapse, I thought it’d be worth posting these visually stunning images from a recent publication by Loren McClenechan, titled “Documenting Loss of Large Trophy Fish from the Florida Keys with Historical Photographs“. Through analysis of historical photographs in the Florida Keys, Loren managed to piece together a convicing history of recreational fishing trends over the past half century. Large fish really were more abundant in bygone days: the average fish size caught in 2007 was a tiny 2.3kg, compared with 19.9kg in 1957, and that the average length of sharks declined by more than 50% in the same period. In this case though, a picture really is worth a thousand words.

1a
1957
1b
Early 1980's

2007
2007

Continue reading “Where have all the big fish gone? Part II: A case study from the Florida Keys”