| | Other topics
News articles on Fragmentation
Mongabay.com news articles on Fragmentation in blog format. Updated regularly.
(10/21/2009) During what was at times an emotional speech, Sabah's Minister of Tourism, Culture, and Environment, Datuk Masidi Manjun, called on the palm oil industry to stop polluting rivers and work with NGOs to save orangutans and other wildlife. He delivered the speech on the first day of an Orangutan Conservation Colloquium held in early October in the Malaysian state of Sabah on the island of Borneo.
Palm oil industry pledges wildlife corridors to save orangutans
(10/03/2009) In an unlikely—and perhaps tenuous—alliance, conservationists and the palm oil industry met this week to draw up plans to save Asia's last great ape, the orangutan. As if to underscore the colloquium's importance, delegates on arriving in the Malaysian State of Sabah found the capital covered in a thick and strange fog caused by the burning of rainforests and peat lands in neighboring Kalimantan. After two days of intensive meetings the colloquium adopted a resolution which included the acquisition of land for creating wildlife buffer zones of at least 100 meters along all major rivers, in addition to corridors for connecting forests. Researchers said such corridors were essential if orangutans were to have a future in Sabah.
Will tropical trees survive climate change?, an interview with Kenneth J. Feeley
(09/24/2009) One of the most pressing issues in the conservation today is how climate change will affect tropical ecosystems. The short answer is: we don't know. Because of this, more and more scientists are looking at the probable impacts of a warmer world on the Earth's most vibrant and biodiverse ecosystems. Kenneth J. Feeley, tropical ecologist and new professor at Florida International University and the Center for Tropical Plant Conservation at the Fairchild Tropical Botanic Garden, is conducting groundbreaking research in the tropical forests of Peru on the migration of tree species due to climate change.
'Greening' logging concessions could help save great apes
(09/17/2009) Promoting reduced impact logging in forest areas already under concession could help protect populations of endangered great apes, argues a new report published by WWF.
Crowned sifaka population on the verge of local extinction: dispatch from the field
(09/08/2009) A small group of crowned sifaka lemurs Propithecus coronatus have been located in the corridor d’Amboloando-Dabolava, Miandrivazo district-Madagascar, but are immediately threatened with local extinction. The small, fragmented, and isolated forest shelters a group of only six adults and one baby. Interviews with local people revealed that once several groups of the species resided in the corridor, and even last year, about 20 individuals were still found there. However, within one year, the population dropped from 20 to 6 individuals.
Saving one of the last tropical dry forests, an interview with Edwina von Gal
(06/29/2009) Often we hear about endangered species—animals or plants on the edge of extinction—however we rarely hear about endangered environments—entire ecosystems that may disappear from Earth due to humankind’s growing footprint. Tropical dry forests are just such an ecosystem: with only 2 percent of the world’s tropical dry forest remaining it is one of the world’s most endangered ecosystems. A newly established organization, the Azuero Earth Project, is working not only to preserve some of the world’s last tropical dry forest on the Azuero peninsula in Panama, but also to begin restoration projects hoping to aid both the forest’s viability and the local people. Edwina von Gal, a landscape designer, is one of the founders of the Azuero Earth Project, as well as president of the organization.
Revolutionary new theory overturns modern meteorology with claim that forests move rain
(04/01/2009) Two Russian scientists, Victor Gorshkov and Anastassia Makarieva of the St. Petersburg Nuclear Physics, have published a revolutionary theory that turns modern meteorology on its head, positing that forests—and their capacity for condensation—are actually the main driver of winds rather than temperature. While this model has widespread implications for numerous sciences, none of them are larger than the importance of conserving forests, which are shown to be crucial to 'pumping' precipitation from one place to another. The theory explains, among other mysteries, why deforestation around coastal regions tends to lead to drying in the interior.
Amazon scientists awarded 'Nobel Prize' of conservation
(02/01/2009) Thomas Lovejoy of the H. John Heinz III Center for Science, Economics and the Environment and William F. Laurance of the Smithsonian Tropical Research Institute (STRI) have been awarded one of ecology's most coveted prizes for their work to understand and conserve the Amazon rainforest. The €400,000 BBVA Foundation Frontiers of Knowledge Award in Ecology and Conservation Biology is given annually to "honor contributions which significantly advance the stock of knowledge in this area for reasons of their importance and originality."
How to make forest fragments more hospitable to wildlife
(01/27/2009) While deforestation garners more attention from environmentalists, fragmentation of forest habitats is of significant concern to ecologists. As forest is fragmented into islands by logging, roads, agriculture, and other disturbances, edge effects alter the structure, microclimate and species composition of the forest patches, usually reducing the overall number of species. Forest specialists are most likely to suffer, losing out to "weedier" generalists and species that can tolerate forest "edge" conditions. A new study, conducted in the Brazilian Amazon, takes a detailed look at the types of birds that are likely to persist, and even thrive, in forest fragments.
Selective logging occurs in 28 percent of world’s rainforests
(01/13/2009) New satellite research presented for the first time at a symposium entitled “Will the rainforests survive?” showed that selective logging is impacting over a quarter of the world’s rainforests. Gregory Asner from the Carnegie Institution presented the “first true global estimate of selective logging” which showed that 5.5 million square kilometers of the rainforest has already seen selective logging or is slated to be logged in the near future.
Forest corridors key to maintaining biodiversity in fragmented landscape
(10/07/2008) Alta Floresta, a region in the Brazilian Amazon state of Mato Grosso, has experienced one of the highest deforestation rates on the planet since the mid-1980s due to the influx of colonists and ranchers who converted nearly half the region's forest land to pasture and agricultural plots. The change has had significant ecological impacts, including reducing the availability of water, increasing the incidence of forest fires, fragmenting remaining forest cover, and diminishing the quality of habitat for wildlife.
Island biogeography theory doesn't explain biodiversity changes in forest fragments
(07/28/2008) Island biogeography theory, the idea that fragmented ecosystems have lower species richness per unit of area compared with contiguous habitats, has served as a useful conceptual model to understand the effects of habitat fragmentation but fails to explain the complexities of change in isolated forest fragments, according to a synthesis published last month in the journal Biological Conservation.
Markets could save forests: An interview with Dr. Tom Lovejoy
(03/20/2008) Market mechanisms are increasingly seen as a way to address environmental problems, including tropical deforestation. In particular, compensation for ecosystem services like carbon sequestration — a concept known by the acronym REDD for "reducing emissions from deforestation and degradation" — may someday make conservation a profitable enterprise in which carbon traders are effectively saving rainforests simply by their pursuit of profit. Protecting rainforests and their resident biodiversity would be an unintentional, but happy byproduct of profit-seeking endeavors.
Fragmentation puts Mexican howlers at risk
(03/03/2008) Forest fragmentation is putting mantled howler monkeys in southern Mexico at risk, reports a new study, published in the inaugural issue of the open access e-journal Tropical conservation Science.
Rainforest fragmentation affects reptiles and amphibians
(02/20/2008) Deforestation of tropical ecosystems is one of the major threats to biological diversity. Anthropogenic activities transform tropical environments into semi-natural landscapes generating a great amount of forest edge that limits with pastures and agricultural lands.
Amazon riparian zones need to be expanded to protect wildlife finds study
(02/19/2008) Strips of forest mandated by Brazilian law along rivers and streams in the Amazon rainforest are too narrow to effectively safeguard biodiversity, reports new research published in the journal conservation Biology.
Parasites a key to the decline of red colobus monkeys in forest fragments
(10/25/2007) Forest fragmentation threatens biodiversity, often causing declines or local extinctions in a majority of species while enhancing the prospects of a few. A new study from the University of Illinois shows that parasites can play a pivotal role in the decline of species in fragmented forests. This is the first study to look at how forest fragmentation increases the burden of infectious parasites on animals already stressed by disturbances to their habitat.
Experts: parks effectively protect rainforest in Peru
(08/09/2007) High-resolution satellite monitoring of the Amazon rainforest in Peru shows that land-use and conservation policies have had a measurable impact on deforestation rates. The research is published in the August 9, 2007, on-line edition of Science Express.
Sedentary, not migratory birds, face higher extinction risk
(06/24/2007) Sedentary birds face considerably higher risk of extinction than migratory birds, reports a new paper published in the journal Current Biology. The findings have implications for the conservation of increasingly endangered wildlife populations.
Logging roads rapidly expanding in Congo rainforest
(06/07/2007) Logging roads are rapidly expanding in the Congo rainforest, report researchers who have constructed the first satellite-based maps of road construction in Central Africa. The authors say the work will help conservation agencies, governments, and scientists better understand how the expansion of logging is impacting the forest, its inhabitants, and global climate.
Congo forest elephants declining from logging roads, illegal ivory
(04/02/2007) Fast-expanding logging roads in the Congo basin are becoming 'highways of death' for the fierce but elusive forest elephant, according to a new study published in the journal Public Library of Science. Logging roads both provide access to remote forest areas for ivory poachers and serve as conduits of advancing human settlement.
Extinction risk accelerated when interacting human threats interact
(02/07/2007) A new study warns that the simultaneous effect of habitat fragmentation, overexploitation, and climate warming could increase the risk of a species' extinction.
Fragmentation killing species in the Amazon rainforest
(11/27/2006) Forest fragmentation is rapidly eroding biodiversity in the Amazon rainforest and could worsen global warming according to research to be published this week in the journal Proceedings of the National Academy of Sciences. "Rainforest trees can live for centuries, even millennia, so none of us expected things to change too fast. But in just two decades-a wink of time for a thousand year-old tree-the ecosystem has been seriously degraded." said Dr. William Laurance, a scientist at the Smithsonian Tropical Research Institute in Panama and leader of the international team of scientists that conducted the research.
Rainforests face myriad of threats says leading Amazon scholar
(10/17/2006) The world's tropical rainforests are in trouble. Spurred by a global commodity boom and continuing poverty in some of the world's poorest regions, deforestation rates have increased since the close of the 1990s. The usual threats to forests -- agricultural conversion, wildlife poaching, uncontrolled logging, and road construction -- could soon be rivaled, and even exceeded, by climate change and rising levels of carbon dioxide in the atmosphere. Understanding these threats is key to preserving forests and their ecological services for current and future generations. William F. Laurance, a distinguished scholar and president of the Association for Tropical Biology and conservation (ATBC) -- the world's largest scientific organization dedicated to the study and conservation of tropical ecosystems, is at the forefront of this effort.
Does tropical biodiversity increase during global warming?
(03/30/2006) Forest fragmentation may cause biodiversity loss lasting millions of years according to a new study published in the March 31, 2006 issue of the journal Science. Using cores drilled through 5 kilometers of rock in eastern Colombia and western Venezuela, Carlos Jaramillo of the Smithsonian Tropical Research Institute (STRI) in Panama and a team of researchers derived a fossil pollen record for a 72 million-year period with samples ranging from 10 to 82 million years ago.
Amazon rainforest biodiversity due to biology not climate change says study
(12/05/2005) The biodiversity of the Amazon rainforest results from biological factors, not climate change as widely thought, says new research published in the journal Proceedings of the Royal Society B. Scientists have long argued that the species richness of tropical forests could be due to climate change-induced fragmentation, known as the "forest refuge: theory, and other external factors that caused geographic isolation. Now, researchers from University College London say that biological influences play a greater role in driving species evolution.
Pandas threatened by roads and forest fragmentation in China
(12/05/2005) China's endangered giant panda is threatened by the rapid expansion of the national highway network, which causing fragmentation of its natural habitat, according to Chinese state media.
Page 1 | Page 2