habitat loss – Page 15 – Desdemona Despair

October 29, 2017

“Decimated”: Germany’s birds disappear as insect abundance plummets 76 percent

By Morgan Erickson-Davis 27 October 2017 (Mongabay) – A new study in PLOS ONE reveals a 76 percent reduction in Germany’s flying insect biomass over the past 27 years while another reports the country’s bird abundance has declined 15 percent in just over a decade. While the causes behind the insect decline haven’t yet been […]

Temporal distribution of insect biomass at selected locations in nature protection areas in Germany, 1989-2016. (A) Daily biomass (mean ±1 se) across 26 locations sampled in multiple years (see S4 Fig for seasonal distributions). (B) Distribution of mean annual rate of decline as estimated based on plot specific log-linear models (annual trend coefficient = −0.053, sd = 0.002, i.e. 5.2% annual decline). Graphic: Hallmann, et al., 2017 / PLOS ONE

October 21, 2017

Three-quarters of the total insect population lost in protected nature reserves – “Whatever the causal factors responsible for the decline, they have a far more devastating effect on total insect biomass than has been appreciated previously”

18 October 2017 (IWWR) – Since 1989, in 63 nature reserves in Germany the total biomass of flying insects has decreased by more than 75 percent. This decrease has long been suspected but has turned out to be more severe than previously thought. Ecologists from Radboud University together with German and English colleagues published these […]

September 10, 2015

Status of polar bear populations for 2014

24 January 2015 (Polar Bear Specialist Group) – The present table was discussed during late fall and early winter 2014, and agreed upon by the group on 20 January 2015. This status table will be updated whenever there is new information available that is considered credible and valid by the group. This year’s status table […]

February 3, 2014

Graph of the Day: Worldwide population estimates of large-carnivore species

10 January 2014 (Science) – Worldwide population estimates of large-carnivore species. Error bars represent the low and high range of the estimates when available. Population estimates were not available for all species. Species ranges vary widely, and range sizes can have a strong influence on species population levels (table S1). Sources: Gray wolf (90), all […]

August 8, 2013

Graph of the Day: Deforestation in non-Brazilian Amazon countries, 2004-2012

By Rhett A. Butler 26 June 2013 (Mongabay) – Peru had the largest extent of forest loss in 2012, losing 48,000 hectares, an increase of 15,431 ha or 47 percent over 2011. Venezuela (11,606 ha), Colombia (10,069 ha), Bolivia (6,975 ha), Suriname (6,569 ha), Guyana (3,713 ha), Ecuador (1,663 ha), and French Guyana (1,338 ha) […]

Local CFA firefighter David Tree shares his water with an injured Australian koala at Mirboo North after wildfires swept through the region, 9 February 2009. The koala, later named “Sam” suffered second- and third-degree burns to her paws in the February fires and is recovering at the Southern Ash Wildlife Shelter in Victoria state. Photo: Mark Pardew / AP

January 9, 2013

Remembering Australia’s Black Saturday 2009

9 January 2013 (Desdemona Despair) – In February 2009, Desdemona was new to blogging. The world was still reeling from the global financial collapse caused by the deregulated, automated, shadow banking system – currently valued at $67 trillion and growing! Global warming was fading into the background of the public consciousness. Except in Australia, where […]