Ecosystems

CLICK HERE - WWF - Living Planet Report 2018: Aiming Higher

"There cannot be a healthy, happy and prosperous future for people" without biodiversity, the report warns.

nbcnews.com - by Rachel Elbaum - October 30, 2018

The population of the planet's vertebrates has dropped an average of 60 percent since 1970, according to a report by the WWF conservation organization.

The most striking decline in vertebrate population was in the tropics in South and Central America, with an 89 percent loss compared to 1970. Freshwater species have also significantly fallen — down 83 percent in that period.

The Living Planet Index, provided by the Zoological Society of London (ZSL) and included in the WWF Living Planet 2018 report, tracked the population of mammals, birds, fish, reptiles and amphibians around the world between 1970 and 2014, the latest year for which data was available.

By Dr. Kolleh A Bangura

To assist Sierra Leone protected areas in building their resilience to climate change, the PARCC (Protected Areas Resilience to Climate Change) project has assessed future climate impacts of land use change on ecosystem services in Sierra Leone. This includes applying five spatially detailed regional climate model projections developed for the project and scenarios of future land use change.

This article summarizes the main features of projected climate impacts on ecosystem services and their implications for focus project areas in Sierra Leone and future national planning. Findings from the latest annual assessment report (AR5) of the Intergovernmental Panel on Climate Change (IPCC) are referred to in order to provide guidance on the way to interpret these results.

Climate Projections

The projections for mean annual temperature in Sierra Leone for the end of the 21st century are for significant increases (with very high confidence):

Image: A hunter in camoflauge, sitting next to another hunger, takes aim with a firearm.

slashgear.com - August 21st, 2015 - Chris Burns

A ten-year study is published on "the unique ecology of human predators", showing mankind to be an unsustainable threat to all wildlife on our planet. This paper, authored by C. Darimont, C. Fox, H. Bryan, and T. Reimchen, compares the predatory patterns of humans to all other predators on the planet. They show that humans kill adult prey at a median rate up to 14 times higher than other predators, with "particularly intense exploitation" of terrestrial carnivores and fish.

(VIEW COMPLETE ARTICLE)

University of Cambridge - cam.ac.uk - March 4, 2015

One of the first studies to map the impact of deforestation on biodiversity across entire regions of the Amazon has found a clear ‘threshold’ for forest cover below which species loss becomes more rapid and widespread.    

By measuring the loss of a core tranche of dominant species of large and medium-sized mammals and birds, and using the results as a bellwether, the researchers found that for every 10% of forest loss, one to two major species are wiped out.