National Geographic Society

Prompt action is needed at the federal level to limit the number of invasive pythons released into the wild, South Florida Water Management District (SFWMD) Deputy Executive Director George Horne said in written testimony to the U.S. Congress today.

The House of Representatives Subcommittee on Crime, Terrorism and Homeland Security is considering a Bill that would classify nonnative pythons, such as the Burmese python, as "injurious animals" and ban their importation into the United States.

Hypothetical diet necessary for a hatchling Burmese python to reach 13 feet in the Florida Everglades (approximately 5 to 7 years)

1 raccoon
1 oppossum
4 five-foot alligators
5 American coots
6 little blue herons
8 ibises
10 squirrels
15 rabbits
15 wrens
30 cotton rats
72 mice

This illustration, and the photos on this page were appended to the SFWMD written testimony handed to Congress today.

(Source: Skip Snow, Everglades National Park & Dr. Stephen Secor, University of Alabama)

"As a top predator and prolific breeder, these exotic snakes threaten state and federal efforts to restore America's Everglades, and they prey on the natural wildlife that call the Everglades home, including species already threatened or endangered," SFWMD's Horne said in its testimony to Congress today.

"We have a long history of successful invasive plant management and experience, but only recently have we had to commit more and more resources to the emerging populations of the Burmese python and other nonnative constrictors appearing across our landscape.

"Today, however, the negative impacts from the unlimited importation of new pest animals require active responses on our part. Effective prevention of additional introductions of potentially invasive constrictor snakes, as proposed in this Bill, is the only path to prevent these costs from continually increasing."

While Florida, California and Hawaii are among the states most impacted by introduced invasive species, every state is affected, Horne added.

Photo of Burmese python killed in Florida courtesy of SFWMD

"Globally, exotic invasive species, including pest animals, weeds and pathogenic diseases, are a major cause of global biodiversity decline. In particular, nonnative animals compete for food and habitat, upset existing predator/prey relationships, degrade environmental quality, spread diseases and, in our case, may threaten the integrity of flood protection levees and canal banks, and electrical power delivery.

"Nationally, more than 50,000 species of introduced plants, animals and microbes cause more than $120 billion in damages and control costs each year. Already, 192 non-native animal species are established in Florida, calling for the development of methods to forecast and respond to the potential economic loss, environmental damage and social stress caused by both new non-native animal introductions and long-established invasive organisms."

The Bill before Congress makes an important contribution towards prevention by limiting the importation of two snake species (the Burmese and African python) with high invasion potentials in the U.S., Horne said.

"The amendment could also be expanded to include all giant constrictor species determined by the U.S. Geological Survey, or USGS, to have medium or high invasion risk potential. The recently published USGS risk assessment for giant constrictors ranked nine species as having either a medium or high overall risk potential for invasion in the United States.

"These species include the Beni Anaconda, boa constrictor, Burmese python, DeSchauensee's anaconda, green anaconda, northern African python, southern African python, reticulated python and yellow anaconda.

Photo of Burmese python killed in Florida courtesy of SFWMD

"We strongly support inclusion of these species in [the Bill] in order to immediately limit importation of species that our best science predicts will be invasive. Rather than wait for the next Burmese python to become established in the United States, a proactive approach such as the proposed legislation being discussed today is urgently needed to protect our environment, economy and quality of life--not just in Florida but throughout the nation."

The South Florida Water Management District is deeply committed to preserving and restoring South Florida's environmental health and, unfortunately, the Everglades ecosystem is now home to the invasive Burmese python, Horne said.

Photo of eggs in Burmese python killed in Florida courtesy of SFWMD

The snake is a top predator that is known to prey upon more than 20 native Florida species. Notable among these are the federally listed Key Largo wood rat, white-tailed deer, American alligator, bobcat and numerous wading birds common to the Everglades, including the wood stork.

"Attempts to manage Burmese pythons divert taxpayers' funds from these other urgent primary restoration and protection tasks. Yet, failure to do so will leave this aggressive animal as a serious impediment to our Everglades restoration progress," Horne said.

Small livestock likely prey

The Burmese python also threatens agricultural interests as small livestock are also likely prey, Horne added.

Since 2000, the South Florida Water Management District and Everglades National Park, have removed 1,248 Burmese pythons from the Everglades.

"Adverse experience already gained in Florida strongly indicates the need to regulate the importation and sale of this snake. Without stronger regulation and control resources, adverse impacts of Burmese pythons will continue to get worse, and the python's population will continue to expand north of the Everglades and likely into South
Florida's urban areas."

Photo of Burmese python nest eggs in Florida courtesy of SFWMD

Florida's other nonnative giant constrictors

Given South Florida's abrupt boundaries between dense human population centers and vast subtropical wilderness areas, it comes as no surprise that numerous giant constrictor species have been observed in Florida, Horne said.

"While most observed animals are presumed to be released pets, three additional constrictor species are now considered established or potentially established in Florida--the common boa, northern African python and yellow anaconda.

"All three species are identified in the USGS risk assessment as having a high overall risk of establishment in the
United States. The common boa has been repeatedly observed in South Florida, primarily on the Deering Estate in eastern Miami-Dade County, but also near Everglades National Park.

"Between 1989 and 2005, 96 common boas were captured in South Florida.

"Recent confirmed sightings of northern African pythons near the eastern boundary of the Everglades and yellow anacondas near Big Cypress National Preserve and Myakka State Park in southwest Florida are also cause for alarm."

"Recent confirmed sightings of northern African pythons near the eastern boundary of the Everglades and yellow anacondas near Big Cypress National Preserve and Myakka State Park in southwest Florida are also cause for alarm. All three of these species share traits with the Burmese python that are considered important factors for invasive potential, and like the Burmese python all three species will be very costly to control should they become widely established."

As the South Florida Water Management District and other agencies try to contain the documented damage and growing threat of the Burmese python and other invasive animals in Florida, the flow of potentially harmful exotic animals across U.S. borders continues, Horne said.

"To use just one example, roughly 144,000 boa constrictors were imported into the United States between
2000 and 2007.

Federal action is needed now to address the immediate threat posed by giant constrictors which have or are likely to establish in our nation's wilderness areas."

The U.S. House of Representatives passed a Resolution today that condemns the unchecked illegal logging and decimation of Madagascar's endemic species, Congressman Earl Blumenauer (D-Oregon), author of the resolution, said in a statement published on his Web site.

"The House is sending a firm signal that the devastating and illegal destruction of Madagascar's natural resources will not be tolerated," Blumenauer said. "Illegal logging not only does irreparable harm to the environment, but it destroys livelihoods.

"In Oregon and across the United States, at a time when we are working to recover the economy, illegal timber imports undermine legitimate logging operations.

"While Madagascar's de facto government continues to use its endangered resources to boost its regime, Congress today joined the administration in calling for an immediate end to these practices."

The Resolution responds to growing anxiety in the international conservation community that the continued plundering of Madagascar's few protected forests, for valuable rosewood and other timber, and with it the destruction of habitat vital for the survival of lemurs and numerous other rare species, has inflicted irreparable damage on the African island country's environment.

Satellite image courtesy NASA

Much of the California-size island has been eroded because of deforestation for farming. Most of the country's twenty million people are poor. Conservation projects such as national parks that would showcase Madagascar's abundance of endemic species were supposed to provide drawcards for tourists and researchers, creating income and work to kick-start local economies. But much of that is at risk because of recent political instability and the destruction of the forests.

There is also concern that what's been happening in Madagascar exacerbates the problem of worldwide illegal logging, which costs countries U.S.$10 billion-15 billion each year in lost revenues for legitimate lumber industries.

"Madagascar is home to almost 150,000 species of flora and fauna. The illegal extraction of these resources threatens biodiversity as well as legitimate logging operations in the U.S.--up to $460 million lost in export opportunities every year," Blumenauer said.

"After a coup in March, the new and weakened government of Andry Rajoelina issued sweeping decrees allowing the harvest and export of wood from protected forests and World Heritage Sites. The Obama administration has condemned the de facto government, and the Wildlife Conservation Society, the World Wildlife Fund (WWF), and Conservation International have denounced the wholesale exploitation of some of the world's most diverse forests and decimation of the local population's resources and livelihoods. These groups have strongly endorsed Blumenauer's resolution," the Congressman's statement said.

NGS photo by Luis Marden

The House voted 409-5 to join the administration and environmental groups in speaking out against the devastation occurring in Madagascar. The Resolution was co-sponsored by 49 members, representing both Democrats and Republicans and including Congressman Donald Payne (D-New Jersey), Chairman of the Subcommittee on Africa and Global Health on the Committee for Foreign Affairs, and Congressman Eni Faleomavaega (D-American Samoa), Chairman of the Subcommittee on Africa and the Global Environment.

Author of the Legal Timber Protection Act, Blumenauer is a global leader on the issue of illegal logging, his Web site states. The law, signed in May 2008, bans the import of illegally harvested timber and wood products and empowers regulators to keep illegally harvested timber out of the U.S.

NGS photo by Luis Marden

Commenting on today's House resolution, John Calvelli, Wildlife Conservation Society Executive Vice President of Public Affairs, said, "The situation in Madagascar is nothing short of tragic--not only for the people and wildlife of Madagascar, but for the entire planet. I applaud Congressman Blumenauer for his continued leadership in the United States Congress on the issue of illegal logging. This resolution will serve as a clear message to the current Malagasy government that the illegal harvesting of Madagascar's natural resources is unacceptable."

Said Lisa Steel, Deputy Director for Madagascar at WWF, "The loss of Madagascar's spectacular biodiversity would not only be a global tragedy, but it will further impoverish rural communities whose lives are inextricably tied to the health of their natural environments. While Madagascar is under the rule of a weakened government, it is essential that the international community work to stop the harvest and trade of illegal wood and other protected species, and we appreciate this important first step by Congressman Blumenauer."

"Congressman Blumenauer continues to play a leadership role in the global problem of illegal logging and the responsibility of consumer nations like the U.S. to support the fight against it, through policies like the Lacey Act and this resolution," said Alexander von Bismarck, executive director of the Environmental Investigation Agency, which conducted a mission to Madagascar in August 2009 to evaluate the illegal logging situation.

Full text of the Resolution passed by the U.S. House of Representatives today:

H. RES. 839
Mr. BLUMENAUER (for himself, Mr. PAYNE, and Mr. FALEOMAVAEGA) submitted
the following resolution; which was referred to the Committee on Foreign Affairs

RESOLUTION
Condemning the illegal extraction of Madagascar's natural
resources.

Whereas Madagascar is the world's fourth largest island, and
home to up to 150,000 species of unique flora and fauna;

Whereas during the last 20 years, with the support of the
U.S. Government and others, Madagascar has made substantial
progress in stopping environmental degradation,
effectively managing natural resources and preserving its
unique biodiversity;

Whereas these natural resources provide essential benefits
and services for the basic needs of the majority of
Madagascar's people, three-quarters of whom live in rural
areas and two-thirds of whom live on less than $2 per
day;

Whereas these natural resources also provide economic development
in the tourism sector, drawing an estimated
$390,000,000 per year;

Whereas the Obama Administration has condemned Marc
Ravalomanana's forced resignation as President of the
Republic of Madagascar, and Andry Rajoelina's installation
as de facto head of state, as tantamount to a coup
d'etat, undemocratic, and contrary to the rule of law;

Whereas in March 2009, the Obama Administration announced
a suspension of non-humanitarian assistance to
the de facto Andry Rajoelina government;

Whereas, given that 2⁄3 of people live off the natural resources,
decreased assistance for conservation efforts is
having dire humanitarian consequences;

Whereas the African Union and the Southern African Development
Community have suspended Madagascar's participation
until constitutional order is restored;

Whereas in October 2009, the World Wide Fund (WWF),
Conservation International, and the Wildlife Conservation
Society condemned an interministerial order issued by the
current administration granting sweeping authorization
to export raw and semi-processed hard wood as
''legaliz[ing] the sale of illegally cut and collected wood
onto the market; allow[ing] for the potential embezzlement
of funds in the name of environmental protection
and constitut[ing] a legal incentive for further corruption
in the forestry sector'';

Whereas the following natural resource degradation is occurring
under the de facto government's watch--

(1) open and organized plundering of precious wood
from natural forests, including World Heritage Sites such
as Marojejy and Masoala National Parks;

(2) intimidation and menace of legitimate local community
management structures, and expropriation of revenue
and benefits from them, causing suffering and impoverishment;

(3) intensified smuggling of endemic and protected
species and species parts and/or products to the national
and international markets;

(4) proliferation of destructive practices such as illegal
mining and slash-and-burn agriculture within protected
areas and environmentally sensitive areas;

(5) degradation of forests, pushing some rosewood
and ebony species to the brink of extinction; and

(6) the degradation of the resource base upon which
rural communities depend representing an immediate and
future threat to local governance, local incomes, and food
security; and

Whereas the vast majority of this precious wood is destined
for global export markets: Now, therefore, be it
Resolved, That the House of Representatives--

(1) calls on people of Madagascar to immediately
undertake a democratic, consensual process
to restore constitutional governance, culminating in
free, fair and peaceful elections;

(2) strongly condemns the illegal extraction of
Madagascar's natural resources and its impact on
biodiversity and livelihoods of rural communities,
including illegal logging, smuggling of wild species,
and illegal mining;

(3) supports action by competent authorities
and the people of Madagascar to stop this illegal
devastation and bring those perpetrating these
crimes to justice;

(4) calls upon importing countries to intensify
their inspection and monitoring processes to ensure
that they do not contribute to the demand for ille10
gally sourced precious woods from Madagascar; and

(5) calls upon consumers of rosewood and
ebony products to check their origin, and boycott
those made of Malagasy wood, until constitutional
order is restored.

 

You might also be interested in:

The call to boycott Madagascar's rosewood and ebony explained
Conservation biologist Stuart Pimm writes about his observations of the diversity in Madagascar and how the current pillaging of the country's natural heritage threatens not only to destroy decades of conservation work, but also ruin the one chance that communities adjacent to national parks have to escape poverty.

Conservationists Call on Malagasy People to Stop Forest Plunder
Eleven groups that fund and help manage conservation of Madagascar's remaining wilderness heritage issued a joint statement deploring the invasion by armed looters of national parks and forests, illegal timber extraction, illegal mining, and intensified smuggling of endangered species.

Act Aggressively to Curb Illegal Logging, Madagascar Urged
Madagascar's efforts to curtail illegal logging in the World Heritage Sites of Masoala and Marojejy National Parks and their peripheral zones have not reduced the impact of logging in the immediate term, say governments, international agencies, and conservation groups that support conservation of the country's natural heritage.

Lemurs, Rare Forests Threatened by Madagascar Strife
Looters are invading Madagascar's protected wildlife sanctuaries, harvesting trees and threatening critically endangered lemurs and other species. (March 2009)

 

Explore evolution in a way Charles Darwin couldn't imagine--by delving into the DNA evidence of each species' unique evolutionary journey.

Geneticist and author Sean B. Carroll will explain how DNA holds a living record of the evolutionary adaptations that allow species to evolve and thrive in diverse environments all over the Earth.

By Brian Handwerk,
Special contributor to NatGeo News Watch

The story of evolution is written in our genes. But that story isn't merely the "survival of the fittest," it's also a story about how the fittest are made.

"It's a look at evolution at its most fundamental level, the genetic changes that make individuals and species different. Species change because of changes in their DNA," said University of Wisconsin geneticist Sean B. Carroll.

Sean B. Carroll is the author of The Making of the Fittest (2006, W.W. Norton) and of Endless Forms Most Beautiful: The New Science of Evo Devo (2005, W.W. Norton).

His book, The Making of the Fittest, describes how scientists have learned to pinpoint the specific genetic changes that cause evolutionary adaptations. DNA evidence records the many gene shifts that gave rise to incredible species like fish able to live in sub-freezing waters, or birds that see in ultraviolet light, as well as others no less incredible but more familiar--including ourselves.

Carroll will take listeners inside the gene, and celebrate the 150th anniversary of Darwin's On the Origin of Species, in a lecture, "The Making of the Fittest," delivered Wednesday, November 4 (8 p.m. ET) at the University of Wisconsin and live to the Web audience around the world.

Listen to the Lecture >>

Drinking out of the firehose

The past decade has seen the discovery of a massive new record of evolution, locked in the DNA of species both living and extinct. Geneticists working with this material are learning to pinpoint the specific DNA changes that have enabled species to adapt to wherever they may live on the planet

In fact, in recent years DNA studies have begun to produce so much evidence that Carroll calls the analysis "drinking out of the firehose." The amount of information contained in the genes of a particular creature is simply enormous.

"All the sets of changes that have occurred that make it different from its existing relatives or previous species [are in evidence]," he explained. "Which ones account for changes in form, physiology, behavior--it's just a massive amount of information."

Evolution itself only moves forward, but evidence of the process may be traced in either direction.

"Information in DNA can tell us how current species are different from their ancestors, not just in new information that's gained but also in old information that's lost or decayed--fossil genes," Carroll said. "Those broken pieces of genetic information give a hint as to how these species' ancestors lived."

The record not only shows when successful adaptations occurred. It also evidences what kinds of genes, slowly decaying through the generations, are no longer important to species but were once vital to their ancestors.

"For example a lot of our human genes for detecting odors are in the process of decay, whereas they are intact in animals like mice that are still living by their noses. A shift in our lifestyle made us probably more dependent on vision and has relaxed pressure on our olfactory system. The evidence of that is right here in the DNA."

Darwin's Mystery Solved

Carroll adds that the evolutionary study of DNA is replete with surprises, like finding the same type of adaptations happening again and again, in different species, in different parts of the world, at different times. In that case the DNA record shows that different animals came up with the same genetic solution to the same survival problems.

"There is nothing like repetition to drill home the message, and that's what biology has conveniently [provided]," he said.

Charles Darwin himself, of course, couldn't pursue his theories into the study of DNA. The science simply didn't exist. But the father of evolution understood that the mechanism of heredity was essential, though he didn't know exactly how traits were inherited at the most basic level.

"He knew in time that if we understood heredity we'd understand variation," Carroll said.

Darwin Live on the Web

"The Making of the Fittest" is the third of a free Webcast lecture series in which some of the world's top scientific minds tackle evolutionary topics.

Later speakers will include E.O. Wilson on the future frontiers of evolutionary biology (November 24).

The first lecture, Everett Mendelsohn on The World Before Darwin, is archived here.

The second lecture, Jonathan Weiner' On Variation, can be heard here.

The series was organized by a group of volunteer Darwin devotees who also hope to rally 1,000,000 users to a Facebook group (http://www.facebook.com/group.php?gid=53320310123) celebrating this year's 150th anniversary of On the Origin of Species.

Darwin Facebook campaign:

Darwin Devotees Make "Father of Evolution" Facebook Superstar
Hundreds of thousands of people from all walks of life joined a Facebook group devoted to the celebration of this year's 200th anniversary of the birth of the "Father of Evolution," Charles Darwin. Now the organizers of the Facebook group are hoping hundreds of thousands more will sign up to celebrate the 150th anniversary of the publishing of Darwin's famous book, On the Origin of Species.

The World Before Darwin
Travel back in time to visit "The World Before Darwin," courtesy of a free webcast lecture with Everett Mendelsohn, emeritus professor at Harvard University. (See the lecture here.) Mendelsohn explored the milieu in which Darwin published "On the Origin of Species" 150 years ago, reveal its other evolutionary thinkers, and shed light on skeptics from the worlds of religion and science.

Darwin on Variation
Pulitzer Prize-winning author and Columbia University professor Jonathan Weiner delved into Darwin's evolutionary theories in the webcast lecture "On Variation." (Hear the podcast here.) Weiner tracked Darwin's footsteps to reveal how the Father of Evolution deduced that many species are descended from common ancestors, and that the variation among them evidences their evolutionary journeys of natural selection.

Darwin resources:

Darwin's First Clues (National Geographic Magazine)

Was Darwin Wrong? (National Geographic Magazine)

PHOTOS: 7 Major "Missing Links" Since Darwin (National Geographic News)

"Instant" Evolution Seen in Darwin's Finches, Study Says (National Geographic News)

Darwin's Secret Notebooks (National Geographic Channel)

PHOTOS: How Do Species Evolve? (National Geographic News)

The Complete Work of Charles Darwin Online

Darwin Correspondence Project

Darwin Digital Library of Evolution

The Charles Darwin Trust