Photo Credit: CARPE

The Congo Basin is a critical tropical forest that supplies vital regional and worldwide ecological services. It is one of the largest tropical rainforests in the world, home to thousands of endemic plant and animal species such as lowland gorillas, chimpanzees, bonobos, and forest elephants. More than eighty million people depend on its abundance of timber and other natural resources for their livelihoods. A paradoxical note is that despite the richness of the Congo Basin, the people near it are some of the poorest in Africa. The forest is constantly cleared to make room for agricultural pursuits and to feed urbanized areas’ hunger for lumber. In addition to deforestation and forest degradation, illegal hunting and commercial bushmeat trade are major threats to biodiversity.

The Central African Regional Program for the Environment (CARPE) is a USAID longterm and regional initiative formed in 1995 in association with a consortium of government and NGO partners that concentrates its resources on six principal forested countries in Central Africa: Cameroon, Central African Republic, Democratic Republic of Congo, Equatorial Guinea,  Gabon, and the Republic of Congo. Uganda, Rwanda, Chad, Burundi, Rwanda and Sao Tome Principe are also involved in the initiative. CARPE is intended to be a 20-year process, resulting in complete local guidance. A major objective of CARPE is to protect forest resources by reducing degradation and protecting biodiversity. Modern tools such as Landsat satellite-derived maps, remote sensing, GIS, and geospatial databases are used for planning and monitoring of the forest. With this information, threatened species are under the protection of local communities and logging is controlled.

 

Prior to the development of CARPE, vast areas of the Congo Basin were unknown. Since then, a number of initiatives and activities have taken place, resulting in an overall evaluation in 2011. In this evaluation, CARPE was deemed extremely successful for introducing large-scale ecosystem management approaches. Tens of thousands of individuals have been trained in a variety of conservation methods and techniques. With   empowerment through such training and motivation that educates and organizes local groups to play an active role in forest and biodiversity conservation programs, civil society is being strengthened. This is seen as critical, circumventing the often inefficiently administered and economically weak centralized governments. The tools practiced allow for an understaffed patrol to communicate with a wider audience, limiting the “weak state management of these resources (that) creates a vacuum where local populations are often stripped of benefits as stronger or elite groups including private companies expropriate natural resources at sub-national and local levels.”Where will CARPE head in the coming years? The implementation of land use management plans for micro- and macro- zones, strengthening of government capacity and transparency are key.

Photo Credit: MarineBio

 

 

By some accounts tourism is the world’s largest industry, accounting for more than 10% of total employment. Tourism can have a negative impact on the environment by leading to the degradation of habitats and landscapes, depleting natural resources, and generating waste and pollution.

As a response to these concerns, ecotourism has grown in popularity because of its emphasis on being ecologically and socially conscious by raising awareness and support for conservation and local culture. Responsible ecotourism includes programs that minimize the adverse effects of traditional tourism on the natural environment and enhance the cultural integrity of the local people. Ecotourism has great potential for the developing world as communities come together and get involved, enforcing their own standards for sustainability.

So what is ecotourism 2.0? Ecotourism 2.0 seeks to fill the gaps that exist in ineffective organizing structures of ecotour communities. There are three main characteristics of ecotourism 2.0:

 

1. Engagement and Education – tourism doesn’t have to be passive and there can be a take-home message

2. Social Media – access and communication of information

3. Radical Transparency – clear organization within communities and with their visitors

Social media has thoroughly changed marketing techniques, now “people aggregate themselves around causes and products they believe in and age, sex and other demographic information is more and more irrelevant as this new media environment takes over.” It also allows for easy access to specific information and advice from locals, extending the experience beyond a vacation with updated news and reminders of key concepts.

Let’s look at successful social media campaigns:

LaosEcotourism Laos‘s website has Google Groups for donor organizations, government agencies, NGOs and the private sector to exchange information on current projects and issues relating to ecotourism development in Laos. The website allows for transparency and easy access to information and recommendation for visitors.

IndiaEcotourismkeralam.org provides access to information, specifically contact information for visitors to Kerala, India. Kerala is considered one of India’s most unspoiled corners prone to forest clearing.

KenyaEco Tourism Kenya is a multifaceted forum with updates and links to everything related to sustainable tourism.

Lebanon – This Baldati community is an ecotourism e-community for public announcements in the field.

 

Photo Credit: RBCT

One of the leading programs with interest in the way HIV/AIDS is affecting the environment and natural resource management (NRM) activities is the USAID’s Africa Biodiversity Collaborative Group (ABCG).

ABCG, as a result, has initiated a number of communication strategies to combat the negative impact of HIV/AIDS on the environment. On this 2011 World’s AIDS Day, I find it appropriate to reflect on the role of information and communication technologies (ICTs) in increasing the effectiveness of communication strategies for combating negative impacts of HIV/AIDS on the environment.

Impacts of HIV/AIDS on the Environment and Natural Resource Management Activities

According to ABCG, HIV/AIDS has impacted the conservation workforce, conservation activities, and finances of conservation government agencies, non-governmental organizations (NGOs) and communities. The pandemic has caused accelerated rates of illnesses and deaths among park wardens, rangers, community game guards, senior officials and other conservation personnel; accelerated rates of payment of terminal benefits by conservation government agencies; created competition for scarce financial resources between HIV/AIDS demands and conservation activities; led to accelerated and unsustainable rates of harvesting of medicinal plants and wildlife; is destroying communal social structures on which community-based natural resource management (CBNRM) is based; and has led to land use changes in some places.

The program has identified the following key impacts of the HIV/AIDS pandemic on natural resource management:

  • Changes in land use as agricultural practices change with falling capacity for heavy labor,
  • Changes in access to resources and land especially when widows and AIDS orphans cannot inherit land,
  • Loss of traditional knowledge of sustainable land and resource management practices,
  • Increased vulnerability of community-based natural resource management programs as communities lose leadership and capacity, and HIV/AIDS issues take priority, and
  • Diversion of conservation funds for HIV/AIDS related costs.

ABCG’s Communication Strategies and the Role of ICTs

With the above recognized negative impacts of HIV/AIDS on the environment and natural resource management, ABCG has agreed that ICTs are uniquely positioned to help increase the impacts of their communication strategies. Some of the current approaches being used include:

  • The use of its website with updated materials including PowerPoint presentations, papers, and web links on case studies conducted on HIV/AIDS and environmental conservation.
  • Networking among the regional partners to share useful information on the issue.
  • Workshops
  • International Conferences
  • AIDS and Conservation Posters by ABCG

So how can ICTs be integrated into these strategies for effective impact on HIV/AIDS?

Looking at the great potentials of ICTs for knowledge and information sharing, the current communication approaches by ABCG may have limited use of ICTs for sharing knowledge on best practices about HIV/AIDS and the environment. A host of the emerging social media tools and platforms are excellent avenues for partners to share information on HIV/AIDS and environmental conservation activities thereby facilitating the work of ABCG in its fight for environmental conservation.

a) Blogs taking the form of a diary, journal, and links to other websites could be great tools for sharing and creating awareness of HIV/AIDS on the environment.

b) Twitter accounts can be used to share instant updates from friends, industry experts, favorite celebrities, and others of the impact of HIV/AIDS on the environment, the prevention strategies, and what’s happening around the world with specific focus on natural resource management and HIV/AIDS.

c) Social networking applications like Facebook with pages specifically created on the issue could help bring like-minded individuals and organizations together to discuss the issue online.

d) Events such as Meetup.com and free Wibinar applications such as WebEx channels may be used to connect partners and advocates together to share information and knowledge on HIV/AIDS and the environment.

e) Wikis pages are great knowledge management and collaborative tools that could be used to capture, find, share, and use information on HIV/AIDS and environmental conservation. Wikis help keep knowledge current, dynamic, and safe for members.

f) Photo sharing applications like Flicker, Picasa, Fotki, Mobile Me, Windows Live SkyDrive could be used to share real-time updates on HIV/AIDS and environment through images.

g) Video sharing tools like YouTube could be used to create awareness of the danger of HIV/AIDS on the environment.

h) Professional networking tools like LinkedIn may bring together experts from the various fields – HIV/AIDS, NRM, Climate Change, among others to discuss the issue.

When the necessary ICT policies and infrastructure are put in place among the ABCG collaborating partners and the regional networks, the use of these applications should not be an obstacle to information sharing on HIV/AIDS and the environment.

Photo Credit: E-Site

Bharti Airtel, an international telecommunications company, has announced a deal with Ericsson, a leading provider of mobile telecommunications equipment, to use Flexenclosure’s green energy solution called E-site for upgrading an initial lot of 250 mobile phone base stations powered by diesel in Nigeria.

The contract enables Ericsson to be responsible for implementation and maintenance services for all the sites. “The new green and highly cost efficient base station solution makes not only environmental sense, but also financial sense for our customers, enabling the efficient deployment of services to previously unserved or under-served areas,” Ericsson Head of Sub-Saharan Africa Region Lars Linden said.

Airtel has successfully tested the solution in Kenya and has experienced significant reduction in diesel usage and CO2 emissions against a round-the-clock diesel powered site. The company also believes that the ‘green’ mobile initiative will improve operations and minimize base stations’ environmental impact.

Flexenclosure is a Swedish start-up that develops innovative solutions for energy-efficient mobile phone coverage in developing nations.  The advanced control system of the E-site solution assures the storage of optimal power from the alternative energy sources (solar or wind) and the process is efficiently managed through the utilization of its battery bank.

The company estimates that there are 40,000 mobile phone base stations in Africa, and most of those rely on a diesel engine for power. Each base station takes anything up to 5200 gallons of the increasingly expensive hydrocarbon soup each year to ensure that people will be able to use their mobile phones. That’s around 210,000,000 gallons of diesel every single year, which isn’t good for the environment or the profit margins of the mobile providers. The technology has the potential to lower diesel usage by up to 80% – that’s a saving of 169,000,000 gallons of diesel each year for African telecommunication companies and that’s the byproducts of burning 169 million gallons of diesel that won’t be entering our atmosphere.

At a recently ended Web 2.0 Summit held in San Francisco California, a Berlin-based startup called Changers announced the release of a portable solar charging system that aims to reduce global warming by shifting society to the use of a currency backed by the sun. The Changers Solar System gives the user a way to harness the sun’s energy, liberates the user from the grid, recharges all kinds of devices, helps the user to socialize his/her energy production, and enables him/her to compete with others to earn Changers Credits that can be spent in the Changers Marketplace.

The Changers Starter Kit which is open for a pre-order beginning now as you read this piece, includes the revolutionary Changers Kalhuohfummi solar battery and the Changers Maroshi solar module and costs $149. The Changers Kalhuohfummi is a simple, one-button device that communicates with Changers.com. Inside is advanced intelligence that accurately measures how much energy it captures and stores in the built-in battery, ready to charge any smartphone or tablet. The Changers Kalhuohfummi solar battery is powered by the Changers Maroshi flexible solar module, which generates up to four Watts per hour — enough to charge the Kalhuohfummi battery in four hours. The Changers Maroshi solar panel, which is produced in Colorado, USA, can be attached to any window or sunny surface.

The Director of Communications, Hans Raffauf explains how the technology works:

http://youtu.be/Ee9WW2J8FdE

 

The system helps you to:

  1. Capture the Sun: Produce your own energy. The Changers personal solar charging kit enables any of us to produce and consume renewable energy. Now, anyone can start producing energy and know exactly how much CO2 they’ve saved. Find a sunny spot, plug it in, and start harnessing the natural energy of the sun. Pretty soon, you’ll be much more aware of where you get the best sunlight and how to optimize your energy production and consumption.
  2. Charge your Device: Change your thinking. Plug in your Apple iPhone/iPad/iPod, Android, Kindle (or any of 1,000 other devices) and charge it using the energy you captured. The Changers Kalhuohfummi will recharge your device as fast as a regular charger and radically change the way you think about energy. Now, you’re a Changer – an autonomous producer and consumer of your own renewable energy.
  3. Become Part of a Movement: Tell the world. Upload your energy production statistics to the Changers community to visualize your actual CO2 savings. See how much energy you’ve produced and compare your score with others. Share your experience and contribution via Facebook and Twitter. Your pioneering actions will inspire others to follow.
  4. Get Rewarded: Turn your green behavior into Changers Credits. The amount of energy you produce is automatically converted into Changers Credits, which can be spent at retail partners on the Changers Marketplace who share your commitment to a greener planet.

To know more and become social with green energy use go to Changers

Photo Credit: IISD

“Using ICT for a greener economy is important, but also complex. It’s a solution, but also a challenge, says former Dutch Minister of Agriculture and current Mayor of The Hague Jozias van Aartsen. Mr Van Aartsen said this during his final keynote speech at the just ended ICT for Greener Economy Mini-Conference in Developing Countries organized by IICD as part of its 15th Anniversary celebration.

Pointing out the ‘two-edged sword nature’ of ICTs in the Green Economy, the Mayor of The Hague mentioned some contributions that ICTs could make to the greener economy as well as the challenges of the new technologies. With the focus of the conference on the developing nations, Mr Van Aartsen was very passionate about the prospects of encouraging farmers in developing countries to participate in the green economy through organic farming, which could improve their livelihoods within the green economy. These farmers would have to be certified thereby enabling them to use their organic status to add value to their crops since the goods would have to be traced and tracked through the whole value chain system.

Mr Van Aartsen continued that besides tracking and tracing, ICTs also bring people together, helping them to educate themselves and improve their businesses. He cited a group of organic coffee farmers from Ecuador who are using their online network to receive essential support on inputs, crop management and marketing. He also mentioned the potential use of ICTs in water harvesting, drip irrigation, and intelligent planting schemes – all of which can help the farmer to get greater volumes and higher quality yields from the land in a sustainable way.

Touching on the other side of the coin, Mr Van Aartsen stated that “ICT use does not only result in greater demand for energy. Greater efficiency also leads to greater consumption”. He cautioned that when applying ICTs to solutions for greener economy, actors should make sure that they have made a proper cost-benefit analysis. When considering energy efficient solutions, actors should make use of clean energy sources such as solar energy. The overall goal should be “how sustainability of local economies can be strengthened, especially how income and food can be secured for the less privileged”.

More on the Mini-Conference.

Climate change is already posing challenges to agricultural productivity worldwide, and the sector is likely to encounter severe water woes as this intensifies. However, water management, which is crucial for sustainable agriculture, improved rural livelihoods and food security, has not yet been sufficiently harnessed and employed across Sub-Saharan Africa.

Consequently, immense opportunities for growth and economic

Picture showing an irrigation system- green plants being watered.

Credit: A Guide To Irrigation Methods — Irrigation Systems

advancement are being missed. Proper irrigation is vital for sustained agricultural growth, according to the FAO. The UN agency says efficient irrigation practices could result in increased crop yields of up to 400%. Yet, farmers across Sub-Saharan Africa, who are most dependent on rainfall, are hamstrung by a landscape with the fewest rainfall monitoring stations in the world, which are also complicated to read. This challenge is compounded by an unreliable climate information dissemination mechanism.

But, as with all challenges in the sector, new technologies are emerging that could provide better information for planning. Rainwatch, a National Oceanic and Atmospheric Administration (NOAA) funded climate information system, seems set to help West African farmers, in particular, to overcome their water management challenges.

NOAA says Rainwatch uses GIS to “monitor monsoon rainfall and tracks season rainfall attributes”. It automatically streamlines rainfall data management, processing and visualization. The user-firendly tool has interactive faces, symbols and self-explanatory names. This simplicity eliminates the need for external assistance, including satellite information, to make use of the tool.

The successful 2009 piloting of the project, coupled with the abundant returns to farmers in Niger last year, a country with chronic water management issues, shows that there is great potential behind scaling-up this project. A key challenge will be getting farmers to use the technology, but the demonstrable benefits will prove to be a strong selling point.

The NOAA funded project received support from the African Center of Meteorological Applications for Development and CIMMS.

Information and communications technology has a growing role in international development.  Global connectivity through the Internet and through mobile phone technology is bringing people closer together to trade, share, and learn in a wide range of sectors, from agriculture, to manufacturing, financial services to water supply.

4In coming weeks and months, we will feature innovations in ICT for environmental protection and the sustainable use of natural resources in these pages.  Today we will begin with an overview of some of the different ways in which ICT can be used, and give a few examples of innovative products that we think can make a difference.  Someday, we would like to have an exhaustive survey of tools. Those of you who are reading this are almost certainly already familiar with the topic.  If that’s the case, you’ll know the power of social networking.  Let’s do a little social networking of our own and share ideas about ICT for natural resources – either innovations that you feel the world should know more about, or ideas that you have for innovations that should be brought to the attention of technology community.

ICT can make a difference in natural resource management in several ways.  A major contribution the improvement of information used for decision making and access to that information. The science of data management is called informatics, and sometimes when the term is used for environmental sciences, it is called ecoinformatics. A key to good data management is interoperability. To better understand trends and causal relationships, it is necessary to combine data from different sources. Doing this requires the development of standards and protocols for describing phenomena, as well as quality control to ensure that the knowledge that results is based on facts.  We will review ecoinformatics in more detail in later posts; for now, have a look at Data Basin, a fantastic tool for curating data that can be located in space and time using maps.  Data Basin provides a way to host and manipulate data sets to create knowledge – to tell a story based upon observations.  But it goes further – it includes a reputation system for ranking data sets, and social networking tools to bring data users together to interpret, critique, and collaborate in the development of knowledge products.

Of course, information is not very useful if it is not accessible.  And access to reliable information has long been a barrier to effective decision-making in many parts of the world.  This is changing.  Not only is direct access to the Internet expanding, but mobile smartphones can be used in many parts of the world to send and receive data.  An exciting development is the use of mobile applications, or “apps”, to address specific needs.  For example, the World Bank DataFinder app can be used to quickly access economic data from the World Bank’s own data servers. (Unfortunately, the first version is exclusively written for the iPhone, a device not readily available in much of the developing world.)  Mapping apps are proliferating, allowing access to topographic and thematic maps.  And farmers can use apps to learn the price of, and even sell, their commodities.  The World Bank is also sponsoring an Apps for Development competition to find new uses for World Bank data recently made publicly available.  Unfortunately, many of the submissions deal with global policy issues and there are few practical tools for natural resource management, agriculture, health, and other pressing development issues on the ground.  This will change once a demand from the field emerges, and we find better ways to link application developers with development and natural resource management practitioners. In 2009 USAID sponsored a competition, Development 2.0 through NetSquared, a technology service for social benefit organizations sponsored by Techsoup Global, a non-profit organization that helps NGOs to access donations of hardware, software, and training from the ICT industry.  Innovative partnerships such as USAID’s collaborations with NetSquared and NetHope.  NetHope is a partnership of technology providers and humanitarian organizations working to solve technology challenges.  NetHope is a Global Broadband Innovations Initiative partner.

The ability to remotely sense and monitor natural resources is an important new tool for scientists and managers.  In future weeks we will explore how ICT is being used to monitor global change, monitor biodiversity in the tropical forest canopy, monitor coral reefs, track the chain of custody of logs harvested in West African rainforests, and detect forest fires in Central America.  ICT has the potential to help identify potential links between a changing climate and disease outbreaks, forest and agricultural pests and food prices.

ICT can have significant affects where time lags are a barrier to achieving goals.  For example, early responses to emergencies such as forest fires or pest/disease/invasive species outbreaks are much more cost effective and more likely to be successful than late responses. It can also make a difference when markets are involved. For example, carbon credit monitoring can be made much for efficient, and importantly, the confidence in the effectiveness of the investment can increase when time lags concerning data about the status and extent of the resource can be eliminated. Note how the artificial boundaries created by thinking in terms of “sectors” such as agriculture, environment, and health, can blur when using data in innovative ways made possible through ICT tools.

ICT can also empower communities by enabling them to collect their own data, making it possible to overcome barriers to effective participation due to nonexistent or inaccessible information, and lessen their dependence upon often inaccessible outside experts.  Using ICT communities can monitor resource use, integrate traditional ecological knowledge with scientific data, and participate as full partners in decision-making processes.  A participatory Geographic Information Systems (computer mapping) community already exists, and an international grassroots mapping network is sharing progress using low-cost tools such as digital cameras and kites or helium balloons to create highly detailed area maps.

  • We will also review some yet unmet needs that ICT can fulfill, such as:
  • Real-time access to information to help port inspectors to identify pests while performing their duties (e.g., warehouses, docks)
  • Access to keys to help parataxonomists working to identify specimens of rare or harmful species
  • Remote upload of information from field observations and query of decision support tools that can be used in a dynamic situation like a disaster response.
  • Information on spot markets for natural resource products and for reservations and logistics for remote tourism facilities such as ecotourism operations, often associated with parks and protected areas.

Some additional considerations involve the possibility of social barriers to the use of ICT.  For example, women and men may have different access to ICT, as well as different needs and different ways of approaching its use.  Frequently, access to tools and equipment by women remains problematic even when ICT is available to the community. We will look for examples of how use patterns, specific needs, and cultural contexts are being used to maximize women’s participation in technology transfer.  More technology-savvy youth may dominate ICT, limiting its use by elders and thereby failing to access important historical knowledge and perspectives.  As with gender, care should be taken in introducing technologies to ensure that its use doesn’t promote inequality or skew the generation of knowledge.

Here are some tools for natural resource management that we will look at in more depth.

1) GPS. Global Positioning System. Used for recording location, useful for georeferencing data entry and producing maps.  Often integrated into cameras and smartphones. Geotagging photographs links a visual record to an observation.

2) GIS. Geographic Information System.  Manipulates georeferenced data in “map layers” to permit overlaying and comparing different types of information. GIS can integrate georeferenced field observations (e.g., from GPS) with remotely sensed images from satellites and aircraft, and digitized maps of terrain, landcover, infrastructure, demography, etc.  Extremely complex to use and expensive in commercial versions; open source GIS is growing rapidly to overcome barriers to entry by communities, small businesses and local government.  The discipline of participatory GIS (PGIS) focuses on making tools and techniques available to communities for natural resource planning. The PGIS community provides peer to peer technical assistance through a web site and email list.

3.  Telecommunications.  Voice, text (SMS) messaging, and other data transmitted over handheld devices used in natural resource management for managing, monitoring and reporting.

4.  Remote sensing.  Some satellite remote sensing data has been made freely available and is accessible providing the technology is in place to receive and process it.  Other data, primarily from high resolution commercial instruments, can be extremely expensive.  Efforts to overcome these barriers include:

  • Terralook, a service developed by NASA and provided by USGS includes georectified LANDSAT and ASTER images as high resolution JPEG compressed images.  Terralook provides a free opensource viewer that allows users to do basic measurements, annotations, and classifications of the images.
  • Several projects have supported the development of a hybrid GPS and camera system that can be mounted on fixed and rotary winged aircraft for mapping along transects, with software to connect tiles to provide a large-scale georeferenced image that can be used with GIS systems (high resolution cameras have been able to capture images as small as 5 cm at 1500′ elevation).
  • Automated remote monitoring.  An early example of the use of ICT for natural resource management was the US Forest Service’s Remote Automated Weather Stations (RAWS) deployed throughout western forests in the US to monitor fire weather.  Advances in technology now make it possible to create environmental sensor networks using high-tech miniature robots to record minute changes in the environment and transmitting the data to computers through telecommunications networks or satellite uplinks.  In the USA, a consortium of research institutions has created a National Ecological Observatory Network to monitor environmental impacts and changes. With the costs declining, these tools will soon be within reach of developing countries, to monitor critical watersheds, environmental impacts of extractive industries, and the habitats of rare and endangered species.

Technology transfer is an important tool for achieving global goals for economic development, biodiversity conservation, and the protection of ecosystem services.  It can help to advance effective governance and rule of law through a more informed, mobilized public and better monitoring of resource use to ensure that it is lawful as well as sustainable.  As a package, better governance and better information will provide an improved chance to lift the rural poor of the world out of poverty.

Vine map superimposed on Google Earth; sources Benjamin White and Google Earth, all rights reserved

Over the past year, I’ve been working with a Cook Islands NGO, Te Rito Enua, with funding from the Asian Development Bank, to develop a pilot project on participatory GIS  as a tool to assist island communities to develop climate adaptation strategies. While there, Mona Matepi, president of TRE, called my attention to the problem of invasive vines on the island. Three species of woody vines* are colonizing the island forests, causing massive deforestation. They overtop and kill trees, replacing the forest with a solid jungle of vines.  Since Rarotonga is dependent upon surface water for its entire supply, and since vines were killing the trees in its forested watershed, it seems like a non-trivial issue.  Nobody knows how the vines will affect water supply.  Will they reduce surface water supply through evapotranspiration?  Will they hold the soils as well as the trees they are replacing?  How will they respond to the more frequent cyclones and droughts that climate models predict?  And, if they are a problem, how can they be controlled?  Many questions to answer – our challenge right now is to find support for research into the issues and the options available.  If no one does anything, there’s a chance, and its not a tiny one, that there could someday be a humanitarian crisis that would have severe implications for one of the dwindling number of robust Polynesian cultures remaining.

I asked University of Maryland doctoral candidate Benjamin White, a remote sensing specialist, for advice on how to illustrate the extent of the vine infestation.  The island is rugged and steep, difficult to map on foot.  But I was able to take some measurements using a handheld GPS unit.  Ben offered to have a go at classifying the vines using my field observations as training data.  Commercial remote sensing imagery provider GeoEye donated high-resolution (4m and 1m) satellite images. Ben developed a sophisticated neural net classifier, and processed the images as R/G/IR reflectance, reflectance-based NDVI, principal components, mean texture and a quick reflectance to “dense vegetation” classification.   The final result was uploaded to Google Earth for visualization purposes; Google Earth data is not useful for this kind of application, but overlaying the classification results on a Google Earth image gives a context in terms of location and topography.  Additional satellite imagery could provide complete ground coverage and (subject to availability) time series to measure change in land cover.

I’m hoping that the image will drive home how bad the problem is, and mobilize some support for Te Rito Enua and the Cook Islands government to get a handle on the vine problem.

Heartfelt thanks go to Ben White and the University of Maryland Geography Department, GeoEye, and the Asian Development Bank for support.

* the vines are Cardiospermum grandiflorum, Mikania micrantha, and Merremia peltata.

via GREEN HAND.

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