Understanding scavengers, their communities, ecosystems and conservation challenges

Vultures are a highly intelligent group of birds that provide important ecosystem services. Yet, populations of old-world vultures decreased dramatically in the last decades owing to anthropogenic factors. Efficient conservation strategies that address critical threats such as indiscriminate poisoning or depleted food sources need to be developed. At the same time, their behaviour including social interactions is still poorly understood. Building on high-tech tracking equipment and AI-based analytical tools, GAIA aims at better understanding how vultures communicate, interact and cooperate, forage, breed and rear their young. Additionally, the GAIA scientists research the social foraging strategies of white-backed vultures and the information transfer within carnivore-scavenger-communities. In the animal kingdom it is common across taxa that the search for food is undertaken not only as individuals but in a group. Animals forage together or rely on knowledge from other individuals to find food. This so-called social foraging presumably yields benefits, for example concerning the amount of food that is found, the size of prey that can be hunted or the time required to access food. GAIA investigates species-specific mechanisms in behaviour and communication as well as the incentives, benefits and possible disadvantages for individuals.

This building block is enabled by experience, funding and access: GAIA had the resources to hire excellent scientists with years of experience in investigating animal behaviour, spatial ecology, carnivore-scavenger interaction, intraspecific communication and human-wildlife conflicts. Additionally, GAIA stands on the shoulders of several decades of integration into science and stakeholder communities in wildlife management and conservation in southern Africa. This allowed access to protected/restricted areas with research permits to tag birds and collar carnivores for example. 

Newly published research results from the project (https://doi.org/10.1016/j.ecolmodel.2024.110941) confirm the benefits of cooperation and social information for foraging success. The results highlight social foraging strategies such as “chains of vultures” or “local enhancement” as overall more advantageous than the non-social strategy. The “chains of vultures” strategy outperformed “local enhancement” only in terms of searching efficiency under high vulture densities. Furthermore, the findings suggest that vultures in our study area likely adopt diverse foraging strategies influenced by variations in vulture and carcass density. The model developed in this study is potentially applicable beyond the specific study site, rendering it a versatile tool for investigating diverse species and environments.

Working with communities to ensure them sustainable economic activities and justice

The forestry sector is suffering from corruption and is limiting benefits for local and Indigenous communities. Our solution allows local communities to tackle forest illegalities and land rights violations and at the same time to secure their land rights and economic rights over forest resources by monitoring and protecting their territory, reinforcing sustainable development and autonomy.  Data collected through the tool also supports judicial or non-judicial cases when local and indigenous communities suffer human rights abuses. 

  • A good understanding of the current economic activities of the communities is needed 
  • Financial means to engage legal procedures is a must 
  • Collaborate with local partners specialised in legal actions or in sustainable business activities 
  • Parallel advocacy work to secure individual and collective land rights   
  • Sensitization on sustainable economic activities is key for the project success, and it must include all groups of the local or Indigenous community and have specific sensitization for women and girls. 
  • Staff trained or specialised in the different fields (justice/law & sustainable economy) is needed Women and girls are key change agents who have to be fully integrated in projects  
Building strong advocacy networks of local, national and international civil society organisations (CSOs)

Having data collected and analysed through a digital tool is an innovation, although to foster changes and ensure local communities and Indigenous people's protection and sustainable lifestyle the data is used for law enforcement and advocacy purposes. To this end, strong local, national and international advocacy networks are needed to take action against reported abuses and to achieve policy changes. By enabling information to be shared between users and opening up data to the general public, the tool facilitates collaborative working. 

  • Collaborating with CSOs who works on similar topics and share values, visions and goals is essential 
  • Promoting collective data verification and analysis to foster joint responses to alerts and advocacy actions 
  • Maintaining good relationships with a range of institutional actors who know and consider the tool as a valid monitoring tool and support it.  
  • Even if building and strengthening CSOs networks is fundamental, it is important to respect when organisations don’t want to work together and find ways to support each CSO’s work instead of pitting organisations against each other. This requires adaptability in projects and advocacy towards donors.  
  • To ensure that the networks are sustainable, medium- and long-term funding is needed to guarantee that the coordination functions run smoothly (secretariat, coordination of working groups, etc.).  

Working hand in hand with grassroots organisations/Indigenous and local communities

The evidence is building that granting Indigenous peoples and other local communities' control over their territories improves forest protection. This is because they are directly invested in the survival of forests and want to ensure that future generations can continue to live and thrive in them. Yet a lot of development and environmental and climate-related programs are not created in collaboration with the people who will be impacted by them. Therefore, our solution arose from the challenges that grassroots organisations and Indigenous and local communities brought to our attention. Those communities are the ones living all the forests illegalities and land tenure violations therefore by directly tackling their challenge it ensures the solution to be genuine and efficient. Working with them directly helps us to better understand the contexts they are facing and adapt the tool in consequence. 

  • Build strong and lasting relationships with partners and people using the tool 
  • Having an adaptable tool which allows to be reactive to changes  
  • Adequate financial resources  
  • Collaborating with Indigenous and local, grassroots organisations  
  • Building strong relationships requires cultural sensitivity, time and efforts. It is important to listen closely  to stories and challenges people share to be sure that the tools respond to their needs and contexts.  
  • Having beforehand researched on the cultural, traditional and socio-economic context strengthens the collaboration and to make the tool more relevant and impactful. Working with Indigenous-led or locally-led organisations to truly address their challenges 
Strengthening community engagement and expert knowledge

With our platform and tools, we not only provide opportunities to raise funds, simplify data collection for monitoring, and detect forest fires earlier to enable faster response, but also foster a sense of ownership for small grassroots projects tackling the globally critical issue of the climate crisis. Each project on our platform is encouraged to share its challenges and success stories with us and the broader community. This engagement happens through regular Community Talks or direct connections with other projects facing similar challenges, fostering meaningful discussions and facilitating valuable knowledge exchange at both local and regional levels.

Our project badges further enhance this sense of belonging, serving as both a symbol of community membership and an official seal of quality for potential supporters. Additionally, our free and confidential advisory service offers Restoration Organizations tailored guidance from our team of experts, empowering them to sustainably develop and improve their initiatives.

Active Community Engagement: Regular opportunities for interaction, such as Community Talks and peer connections, are essential for fostering collaboration, knowledge sharing, and mutual support among projects.

Training and Support: Providing training and ongoing technical support to project implementers ensures they can maximize the tools' capabilities and interpret the data effectively.

Recognition and Validation: Tools like project badges that serve as symbols of quality and credibility are important for both community morale and attracting potential supporters.

Tailored Advisory Support: Offering accessible, expert-driven, and confidential guidance ensures projects can address their unique challenges and make sustainable improvements.

Accessible Technology and Tools: User-friendly, reliable tools for fundraising, monitoring, and early detection of challenges like forest fires are vital for grassroots projects to operate effectively and achieve their goals.

Global yet Local Focus: Balancing global relevance with local impact ensures that both the broad climate crisis and specific regional needs are addressed comprehensively.

Key Lessons Learned

Community Engagement Builds Long-Term Value
Regular interactions through Community Talks and direct peer connections foster a strong sense of belonging and shared purpose. Projects benefit greatly from knowledge exchange, but these forums require consistent facilitation to ensure meaningful participation.

Recognition Drives Motivation and Credibility
Project badges act as an effective tool to recognize and validate project quality, boosting morale among implementers and instilling confidence in donors. However, the criteria for earning badges must be transparent and consistently applied to maintain trust.

Support Must Be Tailored and Accessible
Free advisory services have proven invaluable for projects facing diverse challenges, especially grassroots initiatives with limited resources. However, ensuring adequate capacity within the advisory team to meet growing demand remains critical.

Challenges and Aspects That Did Not Work

Inconsistent Participation in Community Engagement
Not all projects actively participate in discussions or share their experiences, limiting the potential for mutual learning. Encouraging broader involvement remains a challenge.

Balancing Standardization with Flexibility
While project badges and standards provide structure, some grassroots projects felt constrained by rigid criteria that didn’t fully account for local contexts. Introducing adaptability within guidelines has been key.

Advice for Replication

Foster Inclusive Communities
Actively encourage participation in knowledge-sharing initiatives by highlighting benefits and providing incentives for engagement, such as showcasing success stories.

Invest in Scalable Support Structures
Build a robust advisory team and implement scalable processes to accommodate the diverse needs of a growing project community.

Evidence: The current role of fish

Globally, fish consumption shows strong regional differences. For instance, in 2009 the average yearly fish consumption per capita in Africa was 9kg, while in Asia it reached almost 21kg per person. On every continent, small island developing states or coastal countries have higher consumption rates than their landlocked counterparts. In addition to these differences, the FAO State of World Fisheries and Aquaculture report of 2022 predicts these regional imbalances to increase in the future while fish consumption in Africa is expected to further decline.

These observations are consistent with the findings of the baseline studies conducted by the GP Fish, which found that the median annual fish consumption per capita was 0.9 kg in Malawi (2018), 1.1kg in Madagascar (2018), 1.8 kg in Zambia (2021), but 24.4kg in Cambodia (2022). It must be noted that these consumption patterns reflect the situation of the rural population, who typically have lower incomes compared to the national average. Considering the recommended average yearly fish consumption of 10 kg per person, these findings are worrying.

Considering the importance of fish as a protein and nutrient source for rural households it is important to better understand fish consumption patterns and their impact on food and nutrition security. In Malawi, Madagascar, Zambia and Cambodia the GP Fish and the Global Programme Food and Nutrition Security, Enhanced Resilience (GP Food and Nutrition Security hereafter) are working together to improve food and nutrition security. While the data from the GP Fish are focused on fish production and consumption of close by consumers, data from the GP Food and Nutrition Security provide information about the consumption of different protein sources by the Individual Dietary Diversity Score (IDDS). The GP Food and Nutrition Security collected data from women of reproductive age living in rural, low-income households, not focusing on people involved in the fisheries and aquaculture sector and the surveys included questions to determine a household food security status. Using the extensive dataset allowed an assessment of the current role of fish in comparison to other animal and plant protein sources, without the bias of an increased fish consumption among households involved in fish production. Given that data collection was based on 24-hour recalls, the table in the Annex contextualizes the date of the survey with seasonal implications on fish availability (fishing ban, harvesting seasons), indicating that results can be considered representative.

The frequency of the consumption of various protein sources over the last 24 hours, disaggregated by food security status, is shown in Figure 3. The food protein sources include fish and seafood, pulses (beans, peas, lentils), meat and poultry, eggs, and milk and dairy products. The percentages indicate how many of the respondents consumed a particular protein source (e.g., 19% of the food insecure women in Madagascar have consumed fish and seafood in the last 24 hours). The overall height of the column indicates the aggregated frequency of protein consumption by respondents for each country. Lowest frequency of protein consumption within the last 24 hours for food insecure respondents was found in Madagascar and the highest in Cambodia.

Figure 3 reveals several interesting trends:

1. In general, fish is currently the most frequently consumed protein source in nearly all countries. The importance of fish as a protein source can be explained by the fact that fish is often more affordable, more accessible, and culturally preferred compared to other animal- or plant-based protein sources.

2. Food secure respondents do not in general consume fish more frequently compared to food insecure respondents. This indicates that fish is a source of protein and nutrients that is accessible also to the most vulnerable, namely the food insecure population.

3. The results show regional differences in the frequency of protein consumption between African countries and Cambodia: in Madagascar, Malawi, and Zambia, between 19 – 56% of food insecure respondents and 38 –39% of food secure respondents have consumed fish during the last 24 hours, while in Cambodia more than 80% of the respondents consumed fish during the last 24 hours, independent of the food security status. These results are consistent with the abundance of fish in Cambodia, while access to fish in African countries is often limited by seasonality and distance from water bodies.

In addition to the differences between countries, Figure 4 illustrates high differences in consumption patterns within one country. In Zambia, the GP Food and Nutrition Security found fish to be a consumed by 68.3% (food insecure) and 88.5% (food secure) of the interviewed women in the last 24 hours, while in the Eastern Province, it was only 16.5% and 23.2% respectively. This is consistent with the results from the GP Fish survey, which found that the median annual fish consumption in Luapula Province was 2.2kg and 5.2 kg per capita, while fish consumption in Eastern Province amounts to only 0.9 kg for food insecure and 2kg per year for the food secure respondents. These results suggest that the Chambeshi/Luapula river system and connected wetlands in Luapula Province make fish more accessible than in the rather dry Eastern Province. For the success of new interventions in the field of food and nutrition security related to fish production and consumption, the local conditions and cultural context are important factors to consider during the planning process.

Educational Initiatives

Programs like eco-classrooms, guided tours, and school collaborations raised awareness, while immersive experiences, such as observing salmon in their natural habitats, fostered public engagement.

  • The Formosan landlocked salmon serves as a vital environmental indicator; protecting this species contributes to overall environmental improvement.
  • Environmental education initiatives include interpretive services and guided tours along Qijiawan River, collaborative community and tribal education efforts, conservation-focused courses and ecological camps designed with schools, and volunteer recruitment for hands-on conservation work.
  • Plans are underway to introduce immersive experience classrooms, where participants can wear wetsuits and enter the stream to observe the Formosan landlocked salmon in its natural habitat. These experiences aim to deepen public understanding, foster care, and inspire action to protect stream ecosystems and water resources.
  • The general public lacks sufficient awareness of the Formosan landlocked salmon. Environmental education through diverse channels is essential to garner greater support for conservation efforts.
Reforestation and Water Quality Improvements (In-Situ Conservation)

More than 500,000 native trees were planted, converting polluted farmlands into forested areas. Additionally, wastewater treatment systems were implemented to minimize runoff from recreational zones.

  • High-altitude agriculture in the upper Dajia River and its tributaries polluted the ecosystem, with water quality degradation being a primary factor in the near extinction of the Formosan landlocked salmon.
  • An intact forest environment supports the three critical conditions for the salmon's survival: temperature regulation, food availability, and clean water.
  • In 1997, plans were initiated to install wastewater treatment systems to manage sewage from Wuling Farm and surrounding recreational areas, with the first plant becoming operational in 2002.
  • Negotiations with Wuling Farm facilitated its transition toward eco-tourism, reducing agricultural activities and reclaiming farmland for reforestation.
  • In collaboration with the Forestry Bureau, 500,000 native trees were planted along the Qijiawan River and on reclaimed farmland to restore the riparian ecosystem.
  • In December 2006, the final 8.1 hectares of private land in the Wuling area were acquired, ensuring the Qijiawan River habitat remains free from pollution caused by high-altitude agriculture.
  • The presence of high-altitude agriculture stems from the economic needs of indigenous and local communities, highlighting the importance of fostering dialogue aimed at co-existence and mutual prosperity.
Habitat Restoration (In-Situ Conservation)
  • The conservation initiatives launched in the 1980s ultimately faced setbacks, with efforts declared unsuccessful in the 1990s. Key challenges identified included the absence of deep pools and typhoon shelters in high-altitude streams, along with disrupted habitat connectivity caused by silt traps.
  • Between 1999 and 2001, four silt traps on Gaoshan Creek, a tributary of Qijiawan River, were gradually removed or improved, leading to the observation of natural spawning by juvenile salmon.
  • In 2010, an assessment revealed that the No. 1 silt trap at the lowest part of Qijiawan River was a critical bottleneck, and it was removed in 2011.
  • After the improvement work on the weirs, the movement of silt and sand has altered the riverbed morphology both upstream and downstream, impacting the habitat environment and water quality—critical conditions for the survival of the salmon. Continuous monitoring is essential to track the trends and characteristics of riverbed evolution. 
Collaborating with Local and Indigenous Communities (Ex-Situ Conservation)

Indigenous Atayal communities played a vital role in conservation patrols and monitoring environmental changes. Partnerships not only created employment opportunities but also strengthened the cultural connection between the communities and the species.

  • In 2000, neighboring indigenous communities and partners (Sqoyaw Village and Nanshan Tribe communities) formed informal fish protection teams to protect the Formosan landlocked salmon within their traditional territories.
  • After the release of the salmon, monitoring and management efforts became essential, with collaboration from indigenous communities and local neighborhoods being prioritized.
  • Shei-Pa National Park's rugged terrain and vast management area make it ideal for indigenous people, who are familiar with the local landscape and can assist in comprehensive patrolling.
  • Indigenous communities possess rich traditional ecological knowledge, enabling them to detect habitat changes, identify threats from invasive species, and notice abnormalities in the ecosystem, providing invaluable insights for conservation efforts.
  • A co-management mechanism involving indigenous communities and local neighborhoods fosters more effective conservation actions and reduces potential conflicts, such as poaching or illegal activities.
  • This collaboration also provides employment opportunities for indigenous communities, alleviating economic pressure caused by the reduction of traditional hunting or farming activities. It integrates conservation efforts into the local economy, creating a win-win situation for both conservation and social development.
  • The final success of conservation efforts relies not only on the introduction of professional techniques but also on local community participation and the enhancement of awareness.