[MARMAM] EXTINCTION CRISIS ESCALATES-2007 IUCN RED LIST
Jay Miller
jmiller123 at cox.net
Wed Sep 12 15:07:30 PDT 2007
The 2007 IUCN Red List has been issued, and the news is grim.
Extinction crisis escalates: Red List shows apes, corals, vultures,
dolphins all in danger
2007 IUCN Red List of Threatened Species™, the world’s most
authoritative assessment of the Earth’s plants and animals, acts as
a wake up call on the global extinction crisis
74 seaweeds have been added to the IUCN Red List from the Galápagos
Islands. Ten species are listed as Critically Endangered, with six of
those highlighted as Possibly Extinct. The cold water species are
threatened by climate change and the rise in sea temperature that
characterizes El Niño. The seaweeds are also indirectly affected by
overfishing, which removes predators from the food chain, resulting
in an increase of sea urchins and other herbivores that overgraze
these algae.
Yangtze River Dolphin listed as Critically Endangered (Possibly Extinct)
After an intensive, but fruitless, search for the Yangtze River
Dolphin, or Baiji, (Lipotes vexillifer) last November and December,
it has been listed as Critically Endangered (Possibly Extinct). The
dolphin has not been placed in a higher category as further surveys
are needed before it can be definitively classified as Extinct. A
possible sighting reported in late August 2007 is currently being
investigated by Chinese scientists. The main threats to the species
include fishing, river traffic, pollution and degradation of habitat.
India and Nepal’s crocodile, the Gharial (Gavialis gangeticus) is
also facing threats from habitat degradation and has moved from
Endangered to Critically Endangered. Its population has recently
declined by 58%, from 436 breeding adults in 1997 to just 182 in
2006. Dams, irrigation projects, sand mining and artificial
embankments have all encroached on its habitat, reducing its domain
to 2% of its former range.
Banggai Cardinalfish heavily exploited by aquarium trade
Overfishing continues to put pressure on many fish species, as does
demand from the aquarium trade. The Banggai Cardinalfish (Pterapogon
kauderni), which is highly prized in the aquarium industry, is
entering the IUCN Red List for the first time in the Endangered
category. The fish, which is only found in the Banggai Archipelago,
near Sulawesi, Indonesia, has been heavily exploited, with
approximately 900,000 extracted every year. Conservationists are
calling for the fish to be reared in captivity for the aquarium
trade, so the wild populations can be left to recover.
These highlights from the 2007 IUCN Red List are merely a few
examples of the rapid rate of biodiversity loss around the world. The
disappearance of species has a direct impact on people’s lives.
Declining numbers of freshwater fish, for example, deprive rural poor
communities not only of their major source of food, but of their
livelihoods as well.
For information about more species on this year’s IUCN Red List
please visit www.iucn.org/redlist and www.iucnredlist.org
A full 2007 IUCN Red List media package is available, including photo
gallery, two-minute video B roll, species changes, fact sheets on key
species, case studies and statistics
2 minute video B roll and photo gallery of the IUCN Red List of
Threatened Species prepared by Arkive www.arkive.org
For more information / interviews with leading IUCN spokespeople
please contact:
Lynette Lew, IUCN Marketing and Communications Officer, Species
Programme, Tel: +41 22 999 0153; Mob: +41 79 527 7221; Fax: +41 22
999 0015; Email: lynette.lewiucn.org ; Web: www.iucn.org
Sarah Halls, IUCN Media Relations Officer, Tel: +41 22 999 0127; Mob:
+41 79 24 72 926; Fax: +41 22 999 0020; Email: sarah.hallsiucn.org;
Web: www.iucn.org
Craig Hilton-Taylor and Caroline Pollock, IUCN Red List Unit, Tel +44
1223 277 966;
Fax: +44 1223 277-845; Email: caroline.pollockssc-uk.org and
craig.hilton-taylorssc-uk.org; Web: www.iucnredlist.org
Additional information
The IUCN Red List of Threatened Species classifies species according
to their extinction risk. It is a searchable online database
containing the global status and supporting information on more than
41,000 species. Its primary goal is to identify and document the
species most in need of conservation attention and provide an index
of the state of biodiversity.
The IUCN Red List threat categories are the following, in descending
order of threat:
Extinct or Extinct in the Wild;
Critically Endangered, Endangered and Vulnerable: species threatened
with global extinction;
Near Threatened: species close to the threatened thresholds or that
would be threatened without ongoing specific conservation measures;
Least Concern: species evaluated with a low risk of extinction;
Data Deficient: no evaluation because of insufficient data.
Critically Endangered (Possibly Extinct): This is not a new Red List
category, but is a flag developed to identify those Critically
Endangered species that are in all probability already Extinct but
for which confirmation is required (for example, through more
extensive surveys being carried out and failing to find any
individuals).
The total number of species on the planet is unknown; estimates vary
between 10 - 100 million, with 15 million species being the most
widely accepted figure. 1.7 - 1.8 million species are known today.
People, either directly or indirectly, are the main reason for most
species’ decline. Habitat destruction and degradation continues to
be the main cause of species’ decline, along with the all too
familiar threats of introduced invasive species, unsustainable
harvesting, over-hunting, pollution and disease. Climate change is
increasingly recognized as a serious threat, which can magnify these
dangers.
Major analyses of the IUCN Red List are produced every four years.
These were produced in 1996, 2000 and 2004. The 2004 Global Species
Assessment is available from: http://www.iucn.org/themes/ssc/
red_list_2004/2004home.htm
Key findings from major analyses to date include:
The number of threatened species is increasing across almost all the
major taxonomic groups.
IUCN Red List Indices, a new tool for measuring trends in extinction
risk are important for monitoring progress towards the 2010 target.
They are available for birds and amphibians and show that their
status has declined steadily since the 1980s. An IUCN Red List Index
can be calculated for any group which has been assessed at least twice.
Most threatened birds, mammals and amphibians are located on the
tropical continents – the regions that contain the tropical
broadleaf forests which are believed to harbour the majority of the
Earth’s terrestrial and freshwater species.
Of the countries assessed, Australia, Brazil, China and Mexico hold
particularly large numbers of threatened species.
Estimates vary greatly, but current extinction rates are at least
100-1,000 times higher than natural background rates.
The vast majority of extinctions since 1500 AD have occurred on
oceanic islands, but over the last 20 years, continental extinctions
have become as common as island extinctions.
All IUCN Red List updates contribute to a worldwide biodiversity
assessment. Work is underway to reassess the status of all mammals
(approximately 6,000 species) and birds (approximately 10,000
species) and to assess for the first time all reptiles (approximately
8,000 species) and freshwater fish (approximately 13,000 species).
The first global assessment of all amphibians (approximately 6,000
species) was completed in 2004.
The IUCN Red List of Threatened Species™ is a joint effort between
IUCN and its Species Survival Commission www.iucn.org/themes/ssc,
working with its Red List partners BirdLife International
www.birdlife.org, Conservation International’s Center for Applied
Biodiversity Science www.conservation.org, NatureServe
www.natureserve.org, and the Zoological Society of London www.zsl.org.
About The World Conservation (IUCN)
Created in 1948, the World Conservation Union (IUCN) brings together
84 States, 108 government agencies, 800 plus NGOs, and some 10,000
scientists and experts from 147 countries in a unique worldwide
partnership. The Union’s mission is to influence, encourage and
assist societies throughout the world to conserve the integrity and
diversity of nature and to ensure that any use of natural resources
is equitable and ecologically sustainable.
The Union is the world's largest environmental knowledge network and
has helped over 75 countries to prepare and implement national
conservation and biodiversity strategies. The Union is a
multicultural, multilingual organization with 1,000 staff located in
62 countries. Its headquarters are in Gland, Switzerland.
www.iucn.org
About the IUCN Species Survival Commission (SSC) and Species Programme
The Species Survival Commission (SSC) is the largest of IUCN’s six
volunteer commissions with a global membership of 7,000 experts. SSC
advises IUCN and its members on the wide range of technical and
scientific aspects of species conservation and is dedicated to
securing a future for biodiversity. SSC has significant input into
the international agreements dealing with biodiversity conservation.
www.iucn.org/themes/ssc/
The IUCN Species Programme supports the activities of the IUCN
Species Survival Commission and individual Specialist Groups, as well
as implementing global species conservation initiatives. It is an
integral part of the IUCN Secretariat and is managed from IUCN’s
international headquarters in Gland, Switzerland. The Species
Programme includes a number of technical units covering Species Trade
and Use, the Red List Unit, Freshwater Biodiversity Assessments Unit,
(all located in Cambridge, UK), and the Global Biodiversity
Assessment Unit (located in Washington DC, USA).
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