The Amazon rainforest may be home to more animals than previously thought, Stanford scientists show

News report from Stanford University on our research: “By tapping the expertise of indigenous hunters, researchers found that conventional surveying techniques underestimate animal populations and miss species in the remote Amazon. Producing an accurate count is important for planning conservation efforts.” Continue reading “The Amazon rainforest may be home to more animals than previously thought, Stanford scientists show”

Community livelihoods depend upon accurate wildlife estimates

White-lipped Peccary, Amazon Brazil  114.jpg
White-lipped peccary in the Amazon (copyright and photo Jose MV Fragoso)

News article from Virginia Tech University on our research: “Evidence of wildlife passage, such as tracks, scat, fur, and disturbed surroundings, is a more accurate tool for assessing wildlife conservation status than actual encounters with animals, according to an international team of scientists from six universities, publishing in the April 13, 2016, issue of PLOS ONE.” Continue reading “Community livelihoods depend upon accurate wildlife estimates”

New Publication: Line Transect Surveys Underdetect Terrestrial Mammals: Implications for the Sustainability of Subsistence Hunting

In corral behind house

Collared peccary (copyright photo Jose MV Fragoso)

Our new paper in the journal PLOS ONE reports that we are grossly under-detecting hunted animal species.  The results challenge the many studies showing serious negative impacts of subsistence hunting on wildlife species.  Seems like the animals may be hiding from us.  This research indicates that we need to reassess how we measure hunting impacts in the tropics.

Read the article:  http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0152659


Modelo prevê impacto de fatores externos em tribos indígenas: Reportagem no jornal O Globo

Making farina in Kwanamer village, Wai Wai area
Muheres Uaiuais preparam farinha de mandioca tradicional (Foto: José Fragoso)

“Populações habitam a região amazônica há milhares de anos, mas o avanço de elementos da vida moderna está pondo em risco a sustentabilidade desses povos e do ecossistema onde vivem. Essa é a conclusão de um estudo elaborado pela equipe do biólogo português José Fragoso, da Universidade Stanford, nos EUA.” “ — Os resultados da pesquisa mostram que apenas não invadir áreas indígenas não é suficiente — diz Fragoso. — O que acontece no entorno das reservas tem grande impacto no interior.”

Reportagem do O Globo:Modelo prevê impacto de fatores externos em tribos indígenas – Jornal O Globo


Stanford University publishes news piece regarding our new publication.

Large industrial soybean fields in midst of Cerradao forest
Industrial scale soybean fields cut from forest by the Xingu Indigenous Area,  Brazil  (Photo copyright by Jose Fragoso)

Stanford University reports on how our computer model simulating sustainability sheds light on how modern interventions can affect tropical forests and indigenous peoples. Our computer simulation shows that carefully designing government interactions with rural indigenous people is critical for protecting the sustainability of people, wildlife and the land.

Read the full article here: http://news.stanford.edu/news/2016/march/amazon-model-fragoso-031116.html


New Publication: Socio–environmental sustainability of indigenous lands: simulating coupled human–natural systems in the Amazon

Tractor preparing soy bean field in the cerrado
Preparing field for planting soybeans near indigenous land in the Cerrado of Brazil         (Photo copyright by Jose Fragoso )

Our latest publication is out in Frontiers in Ecology and The Environment. We examine the socio-environmental sustainability of protected areas inhabited by indigenous and rural peoples and describe how socio-ecological change and development (e.g., forest clear-cutting outside indigenous areas, religious conversion, improved child mortality rates and introduction of resources from outside) outside these areas influences the sustainability of biodiversity, forest cover, and people inside. There are some surprising results so read the publication!

Read the article:

Continue reading “New Publication: Socio–environmental sustainability of indigenous lands: simulating coupled human–natural systems in the Amazon”

New in press: “Socio–environmental Sustainability of Indigenous Lands: Simulating Human-Nature Interactions in the Amazon” in Frontiers in Ecology and the Environment

Agro-industrial soy bean farm adjacent to an indigenous area in Brazil
Agro-industrial soy bean farm adjacent to forest of an indigenous area in Brazil   (photo Jose Fragoso)

Research collaborators Takuya Iwamura, Eric Lambin, Kirsten Silvius, Jeffrey B Luzar, and José Fragoso have a new paper in press. The publication examines the resiliency and sustainability of biodiversity, human livelihoods and forest cover within Amazonian indigenous lands under various future development scenarios. The paper is scheduled for publication in the February 2016 issue of the journal “Frontiers in Ecology and the Environment”


Large numbers of white-lipped peccaries (Tayassu pecari) invade Amazonian town

WLP herd
White-lipped peccary herd in northern Brazil. Two individuals are radio-collared (Photo Jose Fragoso)

On November 10, 2015, large numbers of white-lipped peccaries moved across the town of Caracaraí in Roraima State, Brazil.  Many became trapped in yards or were killed by townspeople.  Caracaraí has a population of over 10,000 people.   Jose Fragoso (1997, 2004) described these exceptional movements as possible population level dispersal events or perhaps a herd that abandoned its usual home area after long term persecution by humans.

Newspaper story, photos and Fragoso articles hereContinue reading “Large numbers of white-lipped peccaries (Tayassu pecari) invade Amazonian town”

“A fine line: new computer program predicts when human impact becomes too much”

Village by an Amazonian river (photo by Jose Fragoso)

We have completed a major work describing the sustainability of hunting, farming (land use) and local livelihoods in the tropics. We devised an agent based computer simulation model and explored the relationships between the above mentioned elements to consider what the future may hold for tropical forest biota, ecosystems and peoples.

Stanford University, Mongabay and others published news reports about the work. You can view two here: http://news.stanford.edu/news/2014/june/amazon-sustainability-model-061314.html

and  http://news.mongabay.com/2014/0703-morgan-indigenous-model.html

Article:

Iwamura T., Lambin E., Silvius K.M., Luzar J.B. & Fragoso J.M.V. 2014. Agent-based modeling of hunting and subsistence agriculture on indigenous lands: understanding interactions between social and ecological systems. Environmental Modelling & Software, 58: 109-127.

View full article: Continue reading ““A fine line: new computer program predicts when human impact becomes too much””