Introduction
As anthropogenic impacts on the natural world continue to mount, the importance of conservation efforts to protect biodiversity grows. Conservation is a field that transcends the traditional boundaries of pure sciences; it must produce solutions that address ecological concerns alongside human dimensions, including sociopolitical, economic, legal, cultural, aesthetic and spiritual considerations (McNeely 2006; Sanderson et al. 2008). The greatest challenge in conservation is translating a plan into action through implementation, which requires access to adequate resources (Hoeksta et al. 2002; Stephenson and Ntiamoa-Baidu 2010). Assessing the expected costs and benefits of conservation strategies can maximize ecological and socioeconomic returns and cost-effectiveness (Di Minin et al. 2013b). Prioritizing goals and actions can help make the most of limited resources in producing positive impacts for species and their habitats (Dietz, Brown and Swaminathan 2010; Game et al. 2013).
The realities of modern society coupled with resource constraints in conservation render trade-offs between biodiversity conservation and human development unavoidable (Di Minin et al. 2013b). Where applicable, accounting for potential economic benefits in decision-making can produce solutions that combine conservation and sustainable development objectives (Di Minin et al. 2013b). Conservation-based business, such as ecotourism, can provide socioeconomic benefits for local communities, representing a mutually beneficial approach to achieving conservation and economic development goals simultaneously (Di Minin et al. 2013b). Through the economic incentivizing of species conservation, ecotourism may hold a critical role in the ability of species to thrive in the natural world (Lindsey et al. 2007).
Ecotourism is defined as "responsible travel to natural areas that conserves the environment and improves the wellbeing of local people" by The International Ecotourism Society (TIES), representing a pragmatic compromise in balancing conservation objectives with human development in a sustainable manner (Sekercioğlu 2002; Eshun, Frempong and Adjei 2014; TIES 2014). This form of tourism has the capacity to effect environmental, social, cultural and economic impacts at great scales; whether such potential is used for positive impacts or negative impacts depends on how it is carried out (Okech and Bob 2009). When applied in a fair and equitable manner, it offers conservationists an alternative approach to strict protectionism by allowing for the usually non-consumptive use of precious natural resources (Brooks, Waylen and Mulder 2012 ). To maximize social and ecological benefits, ecotourism needs to be complemented with other suitable approaches and tools and may not be universally applicable due to constraints of geography, landscape, inadequate local ecological information, or sociocultural norms specific to each region or country (Coria and Calfucura 2012).
In Kenya, ecotourism contributes significantly to the economy and revolves around its 65 national parks and reserves (Ikiara and Okech 2002; Ramser 2007; Akama, Maingi and Camargo 2011). Through a process of monetary valuation, Cheung (2012) quantified the socioeconomic and environmental impacts of tourism in Kenya's national parks and found that the overall benefits outweigh the costs. Cheung (2012) estimated that the collective benefits range between Kenyan Shillings (KES) 47,328,086,850 and KES 67,052,853,000 annually, while evaluating all socioeconomic and environmental costs between KES 3,864,954,704 and KES 4,624,588,710 per year. This means that tourism in Kenya's protected areas brings a net benefit ranging from KES 21,531,098,140 to KES 42,015,498,296 per annum once socioeconomic and environmental impacts are accounted for (Cheung 2012). Noting the assumptions and inherent difficulties in assigning monetary values to impacts, the author highlighted the overall trend that the socioeconomic and environmental benefits outweigh the costs as broadly representative of the impacts of tourism in Kenya's national parks (Cheung 2012). However, although the cost-benefit ratio is favorable to having tourism in Kenya's protected areas, there are stakeholders who benefit more than others, who in conttrast may directly and disproportionately bear more of the costs while receiving little benefit (Cheung 2012). The analysis by Cheung (2012) identified and discussed areas of the industry where improvements could further maximize benefits and minimize costs. The purpose of this paper is to expand on some of the issues discussed in Cheung's (2012) cost-benefit analysis, and place them into a wider context of taking an interdisciplinary approach to conservation on the African continent.
Discussion
Local communities as major conservation stakeholders
Conservation must take into account local contexts in planning and implementation, as local peoples and communities are inherently significant stakeholders (Hodgman 2005; Waylen et al. 2010). Conservation efforts are most effective when all parties agree to common goals and how to achieve them; obstacles may emerge when these are unclear or poorly communicated (Hodgman 2005; Ahebwa, van der Duim and Sandbrook 2012 ). Cheung (2012) echoed the sentiments of other researchers in noting that local communities were disempowered by an established neo-colonial structure present in the ecotourism industry in Kenya that hinders local participation in decision-making (Scheyvens 1999; Coast 2002; Akama 2004; Manyara and Jones 2007). While it is the intention of governments and NGOs to improve the economic welfare of local and indigenous peoples, their paternalistic role in ecotourism development and management have effectively disengaged local stakeholders from the decision-making process (Coria and Calfucura 2012).
In spite of the favorable cost-benefit ratio, ecotourism has been unable to improve the livelihoods of local communities in Kenya. The description of benefits from revenue-sharing by local stakeholders as being "very minimal" reflects existing administrative inefficiencies and weaknesses in addition to the disempowerment of these communities (Bruyere, Beh and Lelengula 2009; Cheung 2012). Given the widespread poverty that persists in the country, there is a need for ecotourism opportunities and revenue to be equitably and efficiently distributed (Sindiga 1995; Bruyere, Beh and Lelengula 2009; Gusset et al. 2009; Hazzah, Mulder and Frank 2009). The employment of outside labor has also led to imbalances in local representation on tourism workforces (Manyara and Jones 2007; Bruyere, Beh and Lelengula 2009). Okech and Bob (2009) found that involvement in tourism-related work was common among local communities adjacent to the Maasai Mara National Reserve and Amboseli National Park, and this included direct employment, receiving money from camping concessions, earning fees from manyatta (family settlement) visits, and from the sale of souvenir handicrafts. However, for local communities, these benefits were determined to be insufficient to offset the negative impacts of tourism in their local areas (Okech and Bob 2009). These problems are not unique to ecotourism in Kenya. Ecotourism has largely failed to deliver adequate socioeconomic benefits to local stakeholders in many other African nations (Bruyere, Beh and Lelengula 2009 ;; Coria and Calfucura 2012). Many researchers have stressed the importance of ensuring that local communities are able to share meaningfully in the socioeconomic benefits brought by ecotourism (Snyder and Sulle 2011; Ahebwa, van der Duim and Sandbrook 2012 ; Tumusiime and Vedeld 2012; Shoo and Songorwa 2013; Yitbarek et al. 2013).
Conservation that is stakeholder-driven can both account for the needs of local peoples while helping to balance conservation and socioeconomic priorities and objectives (Klein et al. 2008). Community-based ecotourism is more likely to draw suitable compromises between conservation objectives, income generation, and community development (Kiss 2004). Local empowerment can be improved through a greater focus on local community leadership, independence and priorities, as well as by actively discouraging foreign elitism (Thompson and Homewood 2002; Manyara and Jones 2007). Increasing emphasis on partnerships between foreign tour operators and local communities can help unlock the industry's potential to aid economic development and reduce poverty in Kenya and across the continent (Manyara and Jones 2007). However, the decentralization of control over natural resources must be carefully conducted to prevent unfairness. For instance, Snyder and Sulle (2011) found in Tanzania that community members who are literate may take advantage of others who are not, and are thus unable to read contracts or revenue reports. Women and the elderly are other stakeholder groups that may become marginalized as decision-making powers are decentralized (Snyder and Sulle 2011).
Ecotourism can only act as a significant contributor to local livelihoods when benefits are shared in a mutually beneficial manner (Snyder and Sulle 2011). Ensuring that benefits are shared equitably has direct implications for conservation objectives, as many communities living in and around areas of high biodiversity simply have no economic incentives to conserve biodiversity otherwise (Okech and Bob 2009). Government and political commitment can be a critical factor in ensuring that opportunities and benefits are equitably shared. As a point of comparison, Maasai locals hold a large percentage of hotel and park positions in Kenya's Maasai Mara Game Reserve, whereas local communities have found it difficult to find employment related to ecotourism in Tanzania's Ngorongoro Conservation Area (Charnley 2005). In the latter case, capacity building in local communities through training and education can help local people improve their skills and employability. Many individuals do not have education beyond primary levels, even though they may possess in-depth knowledge of the local landscapes and natural history (Charnley 2005). The dependence of ecotourism on political stability, sufficient infrastructure, and tourism-associated development further highlights the need for increased community involvement in decision-making (Linsey et al. 2007). Longstanding issues involving corruption, bureaucratic bloat, and overarching government policies that conflict with conservation efforts have been discussed (Ferreira 2004; Parker and Khare 2005; Smith and Walpole 2005). Not only do such problems hinder economic development and exacerbate the cycle of poverty, they can also create hurdles for conservation efforts and hasten biodiversity loss (Smith and Walpole 2005). While this essay is unable to address these issues in further detail, they are fundamentally serious and require further investigation to ensure that conservation efforts, including ecotourism, can be effectively implemented without such hindrances.
Clearly, community-based ecotourism does not automatically guarantee conservation results or economic development for local stakeholders (Snyder and Sulle 2011; Coria and Calfucura 2012). However, the long-term cultural and social sustainability of ecotourism can be improved by empowering local communities, which can be achieved through direct participation, management, and ownership of conservation businesses (Akama, Maingi and Camargo 2011; Di Minin et al. 2013b; Yitbarek et al. 2013). The development of cultural tourism experiences for tourists can help local communities conserve their cultural identity and can create opportunities for such stakeholders (Charnley 2005). For instance, the development of cultural boma settlement tours and walking safaris are able to provide local Maasai in Tanzania's Ngorongoro Conservation Area with opportunities for direct tourism involvement (Charnley 2005). These tourist experiences can operate with a relatively flexible schedule, allowing local community participants to maintain their traditional lifestyle as pastoralists and agriculturalists (Charnley 2005). These activities are also constructed on the unique skill set of local community members, where existing knowledge and familiarity with culture, local wildlife and landscape can be utilized to generate direct tourism income (Charnley 2005).
The growth of ecotourism can also help to address human-wildlife conflict, a significant challenge for the conservation of mammalian predators. Encounters between humans and predators are frequent in many parts of Africa, which inevitably leads to conflict. In multiple land-use areas, livestock depredation by carnivores causes economic losses for livestock owners and fuels retaliatory killings (Kolowski and Holekamp 2005; Kissui 2008; Hazzah, Mulder and Frank 2009; Hemson et al. 2009). Despite hyenas being the most frequent raiders of livestock, lions are the most common targets in retaliatory killings because they are comparatively easier to track and kill, especially since they are more likely to defend carcasses against humans; other predators like cheetahs and hyenas are more likely to run away (Kissui 2008; Hazzah, Mulder and Frank 2009). For local stakeholders, the economic incentive against conducting retaliatory killings and to protect other wildlife exists only when ecotourism revenues are large enough and if they are able to equitably share in these benefits (Romañach 2007; Lindsey and Woodroffe 2007; Bruyere, Beh and Lelengula 2009; Hemson et al. 2009; Coria and Calfucura 2012). Equitably shared benefits from ecotourism can also provide pastoral and agricultural communities with an incentive to limit herd size, which can help prevent overgrazing and competition with wildlife (Snyder and Sulle 2011). Where other business interests may be present, such as commercial forestry and mining, socioeconomic considerations in conservation planning can help reduce potential policy conflicts (Di Minim et al. 2013b). y accounting for both economic benefits and lost opportunity costs, conservation businesses like ecotourism can reduce conflicts between alternative development plans and facilitate conservation actions in a sustainable manner (Di Minin et al. 2013b).
Conservation prioritization and ecotourism diversification. Ecotourism is the fastest-growing sector in tourism, which happens to be the fastest growing industry in the world (Parker and Khare 2005; Lindsey et al. 2007; Coria and Calfucura 2012). It is able to generate funds for conservation while allowing wealth to be redistributed from developed to developing nations (Lindsey et al. 2007). However, its scope in Africa is limited by the viewing preferences of tourists, especially inexperienced safari-goers who are largely focused on the flagship "Big Five" of lions, elephants, buffaloes, leopards and rhinoceros (Lindsey et al. 2007; Di Minin et al. 2013a). Although responsible for attracting most foreign tourists to protected areas, these species are expensive to conserve. Lions, leopards and elephants can damage the livelihoods of their human neighbors while rhinos require costly anti-poaching strategies to be protected (Lindsey et al. 2007; Di Minin et al. 2013a). The limited nature of funding renders the prioritization of conservation efforts- deciding how and where to protect what- imperative (Carwadine et al. 2009; Joseph, Maloney and Possingham 2009).
Funding is of the utmost importance in conservation as it largely dictates the feasibility and implementation of plans (Hoeksta et al. 2002; Stephenson and Ntiamoa-Baidu 2010). Conservation projects devoted to charismatic megafauna, often large, iconic mammal species, tend to receive more attention and funding than taxa that are not as well-known or appealing to the general public, such as native grasses or invertebrates (Bottrill et al. 2011; Buckeridge 2014). The viewing preferences of tourists in protected areas directly relate to the generation of conservation funds, as donor funding may be skewed towards areas or projects that contain these iconic species (Lindsey et al. 2007).
In South Africa, Di Minin et al. (2013a) echoed the findings of Lindsey et al. (2007) that visitors with lower income levels are willing to visit several protected areas to search for less observable, less iconic species, as opposed to wealthier tourists who are most interested in seeing charismatic megafauna without having to visit multiple protected areas to observe them. Similar trends can be observed in Kenya, where despite having 65 national parks and reserves, the majority of tourists choose to congregate in a few specific parks; the top five parks accounted for 54 % of all visitor arrivals in 2009, while the top ten accounted for 80 % (Republic of Kenya Ministry of Tourism and Wildlife 2010). Areas without the charismatic "Big Five" but where less iconic species are present should consider marketing specifically to domestic and African regional tourists as well as to those who may have more safari experience. This demographic tends to hold an interest in a greater diversity of wildlife and less easily observable species (Lindsey et al. 2007; Di Minin et al. 2013a). The development of less-visited parks may prevent or at least alleviate over-utilization of the most popular protected areas (Lindsey et al. 2007; Cheung 2012). Financial mechanisms, such as a "safari tax", can be considered for subsidizing the conservation of less iconic species, for developing consumer interest in a broader biodiversity base, and for raising general environmental awareness (Di Minin et al. 2013a). The development of public and tourist interest in a wider range of wildlife may ultimately increase and diversify donor funding to biodiversity conservation projects (Lindsey et al. 2007; Di Minin et al. 2013a).
Monitoring and adaptive management. Poor ecological and socioeconomic understanding of the situation, especially when exacerbated by inadequate stakeholder engagement, can create counterproductively negative attitudes among local communities towards conservationists (Jepson, Brickle and Chayadin 2001). There is no disagreement among conservation biologists that to be effective, conservation efforts must be built upon a foundation of strong scientific knowledge (Gordon, Hester and Festa-Bianchet 2004; Cardillo and Meijaard 2012). Cheung (2012) emphasized the need for relevant scientific data, such as population dynamics, habitat requirements, migration patterns, and behavioral responses to changing conditions, to be systematically recorded. This is necessary to facilitate the ongoing assessment of tourism impacts in Kenya's national parks. Ongoing monitoring of such information should be used to develop appropriate regulatory policies and to effectively mitigate impacts and prevent ecological damage (Cheung 2012).
Despite being widely promoted as important for improving conservation effectiveness, adaptive management, monitoring, and evaluation of conservation efforts have rarely been carried out (Kleimann et al. 2000; Regan et al. 2008; Swaisgood et al. 2011). Much of this comes down to the insufficiencies in funding for ongoing monitoring and review (Kleimann et al. 2000; Swaisgood et al. 2011). The impetus behind taking adaptive management approaches in conservation is clear. Plans and actions must evolve as knowledge and conditions change (Sanderson et al. 2008). Considerations for flexibility and feasibility when setting targets enable conservation efforts to cope with continually changing ecological conditions, social acceptance of conservation, and biological knowledge (Carwadine et al. 2009).
Cheung (2012) recommended that to ensure the long-term sustainability of tourism in Kenya's national parks, a system for systematically reviewing and evaluating tourism operations and programs is needed, starting with a structure for ongoing monitoring. The idea for a tourism-specific environmental impact assessment process was proposed to assess the appropriateness of tourism operations, evaluate impacts and ensure that local communities are able to participate equitably (Cheung 2012). It was further stipulated that such a process must take a multidisciplinary approach, in which moral, ethical, cultural and socioeconomic issues are addressed alongside ecological aspects. Ongoing monitoring is needed to inform such reviews and evaluations (Cheung 2012). Additionally, where the neo-colonial structure of the tourism industry persists, public participation mandated by an environmental impact assessment process should be able to draw some level of public participation (O'Faircheallaigh 2010). It is recommended that legislation and standards be established to implement a tourism-specific environmental impact assessment process.
While it is impossible for tourism to eliminate all negative impacts, the specific actions that are damaging can be reduced with proper training, certification, and regulatory enforcement (Akama, Maingi and Camargo 2011; Cheung 2012). For instance, many safari drivers do not avoid practices that excessively interfere with wildlife or damage the environment, such as driving too close to the animals, crowding around wildlife, and driving over delicate habitats (Cheung 2012). Standardized training and licensing by government authorities may help reduce the prevalence of such practices, especially when coupled with adequate enforcement. This could be by a government agency or by tour drivers themselves in the form of community policing (Ikiara and Okech 2002; Cheung 2012). The recent development of sustainability certification programs in the tourism industry has been driven by consumer behavior and increased awareness of sustainability in more affluent nations (Strambach and Surmeier 2013). Tourism certification schemes in Africa have traditionally focused on environmental issues in hospitality and accommodation. An example is Ecotourism Kenya's certification scheme for the country's tourist accommodations (Akama, Maingi and Camargo 2011). The incorporation of social and cultural dimensions in sustainability certification for ecotourism has been stressed, with some efforts now being made to develop appropriate indicators and standards (Akama, Maingi and Camargo 2011; Strambach and Surmeier 2013). Measures to assess local community empowerment and participation in the industry should also be explored (Akama, Maingi and Camargo 2011).
Conclusions
Conservation businesses, including ecotourism, have the potential to simultaneously protect endangered biodiversity while providing financial and social benefits to local stakeholders (Di Minin et al. 2013). To reiterate Cheung's (2012) findings, tourism in Kenya's protected areas brings an annual net benefit ranging from KES 21,531,098,140 to KES 42,015,498,296. Local stakeholders must be able to equitably share in these socioeconomic benefits for tourism to be able to achieve both conservation and development objectives. This can be done through the empowerment of local communities through direct participation in decision-making, management and ownership of conservation businesses (Akama, Maingi and Camargo 2011; Di Minin et al. 2013b; Yitbarek et al. 2013).
Ecotourism holds significant value to conservationists, as it is an approach that can provide local stakeholders with an economic incentive to protect species for conservation (Lindsey et al. 2007). Diversifying current market interest in a greater variety of wildlife may increase donor funding for a wider range of conservation efforts (Lindsey et al. 2007; Di Minin et al. 2013a). Conducting ongoing monitoring enables conservation actions to evolve as knowledge and conditions change through a systematic process of reviews and evaluation (Sanderson et al. 2008; Cheung 2012). Capacity building to enhance local employment, adequate training, sustainability certification schemes, and regulatory enforcement can help reduce the negative impacts of tourism (Akama, Maingi and Camargo 2011; Cheung 2012).
Understanding the costs and benefits of different conservation approaches can ensure that effective and efficient ecological and socioeconomic results are achieved with limited funds (Di Minin et al. 2013b). Conservation requires multidisciplinary solutions to tackle complex problems involving ecological, social, cultural, economic, political and legal aspects (McNeely 2006; Sanderson et al. 2008). Community-based ecotourism has the potential to establish a symbiotic relationship between tourism, local stakeholders and the natural world (Coria and Calfucura 2012). The potential of ecotourism in Africa to produce both positive ecological and socioeconomic results are inextricably linked and requires further development and improvement.