PLoS ONEplosplosonePLoS ONE1932-6203Public Library of ScienceSan Francisco, USAPONE-D-12-3654110.1371/journal.pone.0062598Research ArticleBiologyEcologyAgroecologyEcological political economyBiodiversityConservation scienceEcological economicsEnvironmental protectionSpecies extinctionTerrestrial ecologyZoologyOrnithologyVeterinary scienceAnimal managementAnimal welfareAnimal typesWildlifeTourism Revenue as a Conservation Tool for Threatened Birds in Protected AreasTourism and the Conservation of BirdsStevenRochelle*CastleyJ. GuyBuckleyRalfInternational Centre for Ecotourism Research, Griffith University, Gold Coast, Queensland, AustraliaFentonBrockEditorUniversity of Western Ontario, Canada* E-mail: r.steven@griffith.edu.au
The authors have declared that no competing interests exist.
Conceived and designed the experiments: JGC RB. Performed the experiments: RS JGC. Analyzed the data: RS JGC. Contributed reagents/materials/analysis tools: JGC RB. Wrote the paper: RS JGC RB.
201385201385e625982011201222320132013Steven et alThis is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Many bird populations worldwide are at risk of extinction, and rely heavily on protected area networks for their continued conservation. Tourism to these areas contributes to conservation by generating revenue for management. Here we quantify the contribution of tourism revenue for bird species in the IUCN Red List, using a simple accounting method. Relevant data are available for 90 (16%) of the 562 critically endangered and endangered species. Contributions of tourism to bird conservation are highest, 10–64%, in South America, Africa, and their neighbouring islands. Critically endangered bird species rely on tourism more heavily than endangered species (p<0.02). Many protected areas could also enhance their management budgets by promoting birdwatching tourism specifically.
This project was supported by funding from the Griffith Scool of Environment, Griffith University (www.griffith.edu.au). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.Introduction
Approximately 13% of extant bird species are threatened with extinction [1], [2] and protected area (PA) networks are the mainstay of global efforts to conserve them [2], [3], [4]. These networks include: formal gazetted public national parks and reserves (e.g. IUCN Category II); internationally designated areas such as Biosphere Reserves; communal conservancies; and private reserves [5], [6]. There are >120,000 public protected areas worldwide, covering ∼13% of global terrestrial habitats [4]. Some bird species remain extant only as a result of reserves designated and managed specifically to conserve them [7], [8].
Despite previous efforts, current protected area networks provide incomplete protection for global biodiversity, and species continue to decline in diversity and abundance [3], [9]. Reversing these trends of decline requires a thorough understanding of species ecology, threatening processes, as well as the expansion and active management of global protected area networks [3], [9], [10], [11]. These approaches require funds for conservation measures such as habitat restoration, control of invasive species, reintroductions of threatened species, and anti-poaching efforts [3], [9], [10], [12], [13]. Generally, funds for conserving biodiversity in protected areas worldwide remain inadequate to meet these needs [9], [14].
Many protected area managers seeking to expand and diversify their funding portfolios consider tourism revenue to be an increasingly significant fiscal source for protected area management and conservation. Revenue is raised from entrance and activity charges, accommodation, concession and lease fees, and sales of tourist commodities [6], [13], [15], [16]–[22]. Additional indirect contributions to conservation may occur through various social mechanisms. These include educating tourists and changing their behaviours; providing benefits to local communities to reduce dependence on natural resources [23]–[26]; and improving local awareness and attitudes towards conservation [12], [24], [25].
However, tourism can also create negative impacts in protected areas, affecting both the environment and species within them [16], [27], [28]. The scale, extent and severity of these impacts depend on the nature of the tourism activity. Previous studies have highlighted the variable impacts to birds from both motorised and non-motorised tourism activities [27], [28]. So long as these impacts are managed effectively, tourism can deliver net benefits to species and ecosystems [6], [15], [20], [29], [30] but these are rarely quantified.
The relationship between tourism revenue to protected areas, and conservation of the threatened species which occur in them, has been demonstrated recently for mammals and frogs at the global scale [29], [30], but not for any other taxa. Here, therefore, we examine firstly, the contributions of protected areas networks to conservation of threatened bird species; and secondly, the degree to which tourism revenue to protected areas contributes to the conservation of critically endangered and endangered bird species. We hypothesise that for threatened birds in developing countries, where government funding for conservation is scarce, tourism revenue plays a key role in conservation funding.
Methods
The degree to which individual threatened species depend on tourism revenues to protected areas can be quantified using simple accounting approaches, either for species populations [29] or species ranges [30]. Here we apply the population accounting approach [29], to all 562 bird species classified as critically endangered (CR) or endangered (EN) in the IUCN Red List of Threatened Species [31]. We use the widely adopted IUCN codes, CR and EN respectively, to refer to these threat classifications when reporting results [1], [4], [29], [30]. For each species, this approach calculates T, the proportion of global population protected by tourism, as T = (Σ1nSnRn)/G where Sn are the sizes of subpopulations in parks, Rn are proportions of parks revenue from tourism, and G is the global population for the species concerned [29].
We compiled data on the population status and distributions for each of these 562 threatened bird species from the IUCN Red List and BirdLife International databases [32]. As in previous studies [1], [4], [10], [29], [30] we used these data sources and classifications as they provide a consistent and reliable measure of threat status at the global scale, despite their inherent limitations. In calculating Sn, we included only resident subpopulations [31], [32] within each protected area. For migratory species, we included only those protected areas which are significant breeding sites. We included all protected areas which support known populations of critically endangered or endangered bird species, including those where tourism revenue, R = 0. We obtained data on R from parks agency financial statements, annual reports and published compendia [21], [22], [29], [30] for ∼35 of the world's 196 sovereign nations (Table S1). Such financial data for individual protected areas across global scales are rarely available or consistent. Therefore, we followed approaches used for mammals and frogs [29], [30] and calculated R at national scale, since protected area agencies routinely transfer funds between individual parks.
Results
There are 190 CR and 372 EN bird species in the IUCN Red List of Threatened Species, 562 species in total. For 109 CR and 132 EN species, 57% and 35% respectively, there are no records of occurrence in any protected area worldwide. The distributions of the remaining 81 CR and 240 EN species intersect 520 protected areas in 77 countries. Of these, 17 CR and 11 EN species survive in only a single protected area. Four species survive only in Galapagos National Park in Ecuador; three on Norfolk Island in Australia; two in Junin National Reserve in Peru; and two in Alakai Wilderness Preserve in Hawaii, USA (Table S2). All remaining CR and EN bird species, 34% and 62% respectively, currently survive in at least two individual protected areas.
Worldwide, 413 protected areas conserve only a single CR or EN bird species, and 107 protected areas in 33 countries support two or more species (Table S3). Galapagos National Park supports eight CR and EN species; and Pedra Talhada Biological Reserve in Brazil, and Gough Island Nature Reserve in the southern Atlantic Ocean each support six (Table 1). This highlights the relatively high numbers of threatened bird species supported in island protected areas worldwide.
10.1371/journal.pone.0062598.t001
Protected areas where four or more critically endangered (CR) or endangered (EN) bird species are recorded.
Reserve Name
Country
Total number of CR or EN bird species recorded in this reserve
Number of CR or EN species recorded only in this reserve
Galapagos National Park
Ecuador
8
4
Pedra Talhada Biological Reserve
Brazil
6
0
Gough Island Nature Reserve
Saint Helena
6
1
Munchique National Natural Park
Colombia
5
0
South East Island (Rangatira) Nature Reserve
New Zealand
5
1
Emas National Park
Brazil
4
0
Frei Caneca Private Reserve
Brazil
4
0
Sooretama Biological Reserve
Brazil
4
0
Sierra Nevada de Santa Marta Biosphere Reserve
Colombia
4
1
French Southern and Antarctic Lands
France
4
0
Black River Gorges National Park
Mauritius
4
0
Fiordland National Park
New Zealand
4
0
Mangere Island Nature Reserve
New Zealand
4
0
Mt Canlaon Natural Park
Philippines
4
0
Tourism revenue contributions to protected area budgets, R, range from zero in some countries to 100% for a number of private reserves. North Island in the Seychelles, and Cerro Batipa Private Reserve in Panama, provides examples of the latter (Table S1). For most of the countries relevant to this analysis, R at national scale ranges from 5–80%. For Australia, New Zealand and the USA, R<10%, and for Canada, R = 14%. For the 19 South and Central American countries where data are available, R>20% for five, 10%<R<20% for five, and R<10% for nine. Of the six continental African countries where population data Sn are known for CR and EN bird species, data on R are available for five, where R ranges from between 36–81%. Globally, R is higher on average for developing than developed nations.
Subpopulation data for threatened bird species in protected areas, Sn, are available for 55 CR and 85 EN species, comprising 216 subpopulations in all. Data for both S and R are available for 91 species in 131 subpopulations. For four species, data on R are available for only some of the relevant protected areas. These species are the Seychelles Magpie-robin Copsychus sechellarum, Seychelles White-eye Zosterops modestus, Black-footed Albatross Phoebastria nigripes, and Sooty Albatross Phoebetria fusca. Calculations of T for these species thus reflect only some of the known subpopulations.
For these 91 species, T ranges from 0–64% (Table 2, Fig. 1). For nine species, T = 0, as the protected areas in which these species occur do not receive income from tourism. For 41 species: 0%<T<5%; for 21 species, 5%≤T<10%; for 8 species, 10%≤T<20%; and for 12 species, T>20% (Fig. 1). Mean T is significantly greater for CR than EN bird species (arcsine square-root transformation, t = 0.082, d.f. = 89, p<0.02). For two species, T≥50%: the Seychelles Magpie-robin (T = 64%) and the African Penguin (T = 50%). It is not only small populations that rely on tourism revenue since there is no correlation between T and global populations G (R2 = 0.008, d.f. = 89, p = 0.397) (Fig. 2). For example, the Seychelles Magpie-robin and African Penguin with T≥50% have global population sizes G of 100–500 and 50,000–100,000 respectively.
10.1371/journal.pone.0062598.g001
Proportions T of CR and EN bird species with conservation funding from tourism.
10.1371/journal.pone.0062598.g002
Relation between T and G, natural log scales, for CR and EN bird species (n = 91).
10.1371/journal.pone.0062598.t002
Proportions of critically endangered (CR) and endangered (EN) bird populations protected through tourism-related revenue.
Scientific Name
Common Name
IUCN
Global population (G)
Number* of protected subpopulations with known S, R
Number of individuals protected through tourism (SR)
Percentage of global population protected through tourism (T)
Copsychus sechellarum
Seychelles Magpie-robin
EN
178
2
114
64.0
Spheniscus demersus
African Penguin
EN
52000
6
26040
50.1
Zosterops modestus
Seychelles White-eye
EN
450
3
178
39.6
Sephanoides fernandensis
Juan Fernandez Firecrown
CR
3000
1
1137
37.9
Malaconotus alius
Uluguru Bush-shrike
CR
2400
1
881
36.7
Mimus trifasciatus
Floreana Mockingbird
CR
100
1
28
28.0
Camarhynchus pauper
Medium Tree-finch
CR
1660
1
460
27.7
Phoebastria irrorata
Waved Albatross
CR
34700
1
9612
27.7
Mimus melanotis
San Cristobal Mockingbird
EN
8000
1
2216
27.7
Camarhynchus heliobates
Mangrove Finch
CR
160
2
44
27.5
Spheniscus mendiculus
Galapagos Penguin
EN
1800
1
474
26.3
Artisornis moreaui
Long-billed Tailorbird
CR
250
1
55
22.0
Buteo ridgwayi
Ridgway's Hawk
CR
240
1
38
15.8
Polioptila clementsi
Iquitos Gnatcatcher
CR
250
1
39
15.6
Laterallus tuerosi
Junin Rail
EN
2500
1
388
15.5
Podiceps taczanowskii
Junin Grebe
CR
304
1
47
15.5
Hylonympha macrocerca
Scissor-tailed Hummingbird
EN
20000
1
2480
12.4
Pterodroma phaeopygia
Galapagos Petrel
CR
10000
4
1219
12.2
Terpsiphone corvina
Seychelles Paradise-flycatcher
CR
278
2
30
10.8
Zosterops albogularis
White-chested White-eye
CR
50
1
5
10.0
Grus americana
Whooping Crane
EN
382
1
36
9.4
Manorina melanotis
Black-eared Miner
EN
1000
1
94
9.4
Papasula abbotti
Abbott's Booby
EN
6000
1
564
9.4
Zosterops tenuirostris
Slender-billed White-eye
EN
2000
1
188
9.4
Ara ambiguus
Great Green Macaw
EN
3700
3
334
9.0
Pardalotus quadragintus
Forty-spotted Pardalote
EN
3800
2
339
8.9
Cacatua haematuropygia
Philippine Cockatoo
CR
2700
2
239
8.9
Aceros narcondami
Narcondam Hornbill
EN
340
1
27
7.9
Threskiornis bernieri
Madagascar Sacred Ibis
EN
3250
1
254
7.8
Myiotheretes pernix
Santa Marta Bush-tyrant
EN
2500
1
190
7.6
Anas laysanensis
Laysan Duck
CR
1100
2
82
7.5
Acrocephalus familiaris
Millerbird
CR
1000
1
74
7.4
Myadestes palmeri
Puaiohi
CR
500
1
37
7.4
Oreomystis bairdi
Akikiki
CR
1840
1
136
7.4
Crax blumenbachii
Red-billed Curassow
EN
250
3
16
6.4
Aratinga brevipes
Socorro Parakeet
EN
300
1
18
6.0
Mimus graysoni
Socorro Mockingbird
CR
420
1
25
6.0
Anas wyvilliana
Hawaiian Duck
EN
2525
1
148
5.9
Leptoptilos dubius
Greater Adjutant
EN
1000
2
52
5.2
Petroica traversi
Black Robin
EN
250
2
13
5.2
Phoebastria nigripes
Black-footed Albatross
EN
130000
3
6700
5.2
Strigops habroptila
Kakapo
CR
124
2
6
4.8
Pterodroma axillaris
Chatham Petrel
EN
1100
1
53
4.8
Pterodroma magentae
Magenta Petrel
CR
150
2
7
4.7
Psephotus chrysopterygius
Golden-shouldered Parrot
EN
2000
2
87
4.4
Eudyptes sclateri
Erect-crested Penguin
EN
170000
2
7392
4.3
Anas nesiotis
Campbell Islands Teal
CR
250
3
10
4.0
Fregata andrewsi
Christmas Frigatebird
CR
4800
1
188
3.9
Heteroglaux blewitti
Forest Owlet
CR
250
1
8
3.2
Pyrrhura griseipectus
Grey-breasted Parakeet
CR
250
1
8
3.2
Odontophorus strophium
Gorgeted Wood-quail
EN
4300
1
137
3.2
Porphyrio hochstetteri
Takahe
EN
220
2
7
3.2
Thinornis novaeseelandiae
Shore Plover
EN
220
1
6
2.7
Cyanoramphus malherbi
Malherbe's Parakeet
CR
663
3
18
2.7
Rollandia microptera
Titicaca Grebe
EN
3000
2
81
2.7
Phoebetria fusca
Sooty Albatross
EN
42000
1
1133
2.7
Carpodectes antoniae
Yellow-billed Cotinga
EN
794
1
20
2.5
Mergus octosetaceus
Brazilian Merganser
CR
250
1
6
2.4
Penelope albipennis
White-winged Guan
CR
250
3
6
2.4
Megadyptes antipodes
Yellow-eyed Penguin
EN
4800
3
110
2.3
Geothlypis beldingi
Belding's Yellowthroat
CR
1500
1
30
2.0
Torreornis inexpectata
Cuban Sparrow
EN
700
1
13
1.9
Conothraupis mesoleuca
Cone-billed Tanager
CR
250
1
4
1.6
Callaeas cinereus
Kokako
EN
1538
1
24
1.6
Pipile jacutinga
Black-fronted Piping-guan
EN
10000
1
156
1.6
Ardea humbloti
Madagascar Heron
EN
1500
1
22
1.5
Ardeola idae
Madagascar Pond-heron
EN
6000
1
85
1.4
Amazona vinacea
Vinaceous Amazon
EN
2500
3
30
1.2
Penelope perspicax
Cauca Guan
EN
1235
2
14
1.1
Apteryx mantelli
Northern Brown Kiwi
EN
25000
3
202
0.8
Amazona rhodocorytha
Red-browed Amazon
EN
2500
1
19
0.8
Eleothreptus candicans
White-winged Nightjar
EN
2400
1
18
0.8
Pedionomus torquatus
Plains-wanderer
EN
8000
2
50
0.6
Phytotoma raimondii
Peruvian Plantcutter
EN
1000
1
6
0.6
Curaeus forbesi
Forbes's Blackbird
EN
2500
1
12
0.5
Haliaeetus vociferoides
Madagascar Fish-eagle
CR
250
1
1
0.4
Eutriorchis astur
Madagascar Serpent-eagle
EN
250
1
1
0.4
Cistothorus apolinari
Apolinar's Wren
EN
1300
1
4
0.3
Anodorhynchus hyacinthinus
Hyacinth Macaw
EN
6500
1
18
0.3
Brotogeris pyrrhoptera
Grey-cheeked Parakeet
EN
15000
2
22
0.1
Anas bernieri
Madagascar Teal
EN
2500
1
2
0.1
Terenura sharpei
Yellow-rumped Antwren
EN
10000
1
8
0.1
Ara rubrogenys
Red-fronted Macaw
EN
4000
1
1
0.0
Diomedea sanfordi
Northern Royal Albatross
EN
17000
1
2
0.0
Thalassarche melanophrys
Black-browed Albatross
EN
1220000
2
77
0.0
Eleoscytalopus psychopompus
Bahia Tapaculo
CR
250
1
0
0.0
Zosterops chloronothus
Mauritius Olive White-eye
CR
296
1
0
0.0
Foudia rubra
Mauritius Fody
EN
328
1
0
0.0
Nesoenas mayeri
Pink Pigeon
EN
395
1
0
0.0
Psittacula eques
Mauritius Parakeet
EN
300
1
0
0.0
Trichocichla rufa
Long-legged Thicketbird
EN
250
3
0
0.0
Other subpopulations lacking data on S and R may also exist.
Discussion
Our findings as presented above fall into two major categories: firstly, on the degree of protection or otherwise for threatened bird species; and secondly, on the relative contributions of revenue from tourism. In the first category, we show that 57% of critically endangered and 35% of endangered bird species do not occur at all inside the current global protected area network, highlighting the global extinction risk facing many species. We also show that 14 individual protected areas each protect the last remaining populations for more than one critically endangered or endangered bird species (Table 1), and are hence of particular significance for bird conservation. Half of these protected areas are in South America, reflecting the high diversity and restricted ranges of neotropical avifauna. Three are on islands, particularly vulnerable to some threats but relatively protected from others [33], and sometimes amenable to direct conservation interventions, with a number of successful examples [34]–[36]. These findings confirm longstanding concerns over inadequate protection of bird species worldwide [9], [10].
These findings are subject to limitations of available data on populations, distributions and threats to bird species. These limitations influence both the IUCN Red List classifications of species as critically endangered or endangered, and the reliability and completeness of numerical estimates for protected subpopulations, Sn. However, these limitations are unlikely to compromise our findings for several reasons. The first relates to the global scale of our assessment. A number of countries, and in some case subsidiary jurisdictions such as states and provinces, maintain their own legislation for protection of threatened species, which do not necessarily match the IUCN Red List either in the species included, the categories of threat status, or the threat classifications allocated. These differences, however, are not consistent. In some countries, national or subsidiary legislation may be more comprehensive, stringent or up to date than the IUCN Red Lists, but in other countries and jurisdictions the reverse applies, especially in developing nations. In this analysis, therefore, we relied on the IUCN Red List as the only standardised international database available.
Furthermore, our assessment made no attempt to evaluate the accuracy of the threatened species classification used but focused simply on where threatened species occurred in protected areas and the degree to which these areas were funded through tourism. Similar global assessments using these data sets have recently been completed for mammals and frogs [29], [30] and these data are widely used for other global threatened species assessments [1], [4], [10]. This is less of a limitation for birds than for mammal and frog species [29], [30], because in the case of birds, data from IUCN are supplemented by those from BirdLife International. For frogs [30], the shortcomings of subpopulation data forced the authors to rely on an alternative and less precise accounting metric, proportion of known range. For mammals [29], data on S and R were available jointly for only 90 of 1131 candidate species, which included vulnerable as well as critically endangered and endangered species. The calculations of T presented here for threatened bird species are thus the most comprehensive yet available for any major taxonomic group.
For the future conservation of threatened bird species, two key issues emerge from this first section of our analyses. (a) The limitations in available data demonstrate the importance of continuing research on bird species populations, distributions, ecology and threats. (b) The high proportions of threatened bird species (43%) which do not currently occur in any protected area worldwide demonstrates the importance of promoting biodiversity conservation across both public and private lands, even where expansion of the formal protected area network is not feasible. (c) Data on the joint distribution of critically endangered and endangered bird species, as highlighted here, could be used to direct conservation funding efficiently, thereby maximising overall threat reduction per unit expenditure.
Our second set of findings relates to the role of tourism revenue contributions to conservation of threatened bird species occurring at least in part within protected areas. Our results identify 41 species where at least 10% of each global population relies on tourism revenue. Naturally, these calculations are also subject to limitations in the scope, accuracy and reliability of financial data in the budgets of protected area agencies. Only a few countries produce and publish transparent, timely and externally audited annual financial statements for their protected area agencies that distinguish different revenue sources. Therefore, if anything, our findings underestimate the importance of tourism revenue for threatened birds in protected areas. When financial data become available for more protected area networks in more countries, a revised analysis would potentially identify a greater number of threatened species that are dependent on tourism revenues.
Despite these shortcomings in detailed data, our findings are broad and robust enough to demonstrate the important role of tourism in funding the conservation of threatened bird species. This reflects changing patterns in protected area funding more generally, over recent decades. Globally, government budget allocations are still the principal source of protected area management funds [13], [21]. However, many protected area agencies increasingly rely on tourism revenues to supplement or replace government allocations (Table 2) [19]. Tourism thus contributes to the conservation of threatened bird species, especially in developing nations with high biodiversity.
The other side of this coin, however, is that threatened bird species protected in parks are now subject to risks associated with the volatility of global tourism markets in addition to those already imposed by direct disturbance impacts [12], [28]. This is more of an issue for parks agencies in developing nations operating with less reliable government funding [13], [21], [37]–[40]. In addition, raising revenue from tourism to public protected areas may rely on charging user fees for visitors, and this is subject to equally volatile political and economic constraints [12], [13], [21]. In addition, for some countries, tourism revenues raised in protected areas not retained by the parks agencies at all. Such challenges are less problematic when tourism and conservation action occurs on private land, as has been demonstrated in southern Africa [16], [41]–[44]. For threatened bird species, the contributions of private enterprise have been quantified for only a few cases, notably the Seychelles White-eye on North Island and the Resplendent Quetzal (Pharomachrus mocinno) in the Monteverde Cloud Forest Reserve [6], [34].
The broad accounting approach taken here simply quantifies the degree to which tourism to protected areas contributes to funding conservation of threatened bird species. A number of more detailed or sophisticated approaches may also be feasible. 1. Differentiation by land tenure, distinguishing public, communal and private lands. 2. An accounting approach which calculates net contributions [45], allowing for negative environmental impacts [27], [28] as well as positive conservation measures, and distinguishing high-impact park-based mass tourism from low-impact park-based nature tourism. 3. A more detailed approach which relies on ecological modelling rather than purely on accounting. 4. A narrower focus, on the bird-watching or avitourism subsector specifically, as below.
Birdwatching is a significant and expanding subsector of the tourism industry. Avitourists travel either to see particular bird species, especially those that are rare or threatened; or to visit areas with high endemism and high diversity of bird species [46]–[52]. As shown here, many threatened bird species currently occur only outside protected areas, and this includes species attractive to birdwatchers. Specialist avitourism may thus create further incentives to expand the protected area network, or improve bird conservation on lands outside that network. In particular, this includes Important Bird Areas, designated in part due to the presence of threatened bird species. The role of avitourism in contributing to bird conservation through mechanisms such as Important Bird Areas merits further attention.
In conclusion, despite the dependence of tourism revenues on market conditions, and the risk associated with such dependence, we demonstrate that tourism revenue to protected areas makes a significant contribution to the conservation of threatened bird species, comparable to that for threatened mammals and frogs [29], [30]. While government funding remains a critical source of funding for many protected areas and conservation globally, we propose that this could be increased by promoting tourism on both public and private lands. Specialist niche tourism markets such as avitourism may provide further incentives to promote sustainable conservation tourism, particularly in those habitats identified as Important Bird Areas.
Supporting Information
Proportional contributions of tourism to protected area budgets by country. All figures in local currencies at publication date of source.
(DOCX)
Remaining global populations for critically endangered (CR) and endangered (EN) bird species surviving in only a single PA.
(DOCX)
Distribution of critically endangered (CR) and endangered (EN) bird species by country.
(DOC)
We thank staff from protected area agencies worldwide for providing data on R; our colleagues for assistance in translating non-Anglophone reports and currency measures; and D. Jones and C. Morrison for comments on the manuscript prior to submission.
ReferencesHoffmannM, Hilton-TaylorC, AnguloA, BöhmM, BrooksTM, et al. (2010) The impact of conservation on the status of the world's vertebrates. 330: 1503–1509.Hilton-Taylor C, Pollock C, Chanson J, Butchart SHM, Oldfield T, et al.. (2009) Status of the world's species. In: Vié J-C, Hilton-Taylor C, Stuart SN, editors. Wildlife in a changing world. An analysis of the 2008 IUCN Red List of Threatened Species. IUCN: Gland. pp 15–42.RodriguesASL, AndelmanSJ, BakarrMI, BoitaniL, BrooksTM, et al. (2004) Effectiveness of the global protected area network in representing species diversity. 428: 640–643.ButchartSHM, ScharlemannJPW, EvansMI, QuaderS, AricòS, et al. (2012) Protecting important sites for biodiversity contributes to meeting global conservation targets. 7: e32529.LangholzJA, KrugW (2004) New forms of biodiversity governance: Non-state actors and the private protected area plan. 7: 9–29.Buckley RC (2010) Conservation Tourism. Wallingford: CAB International. 214 p.Department of Conservation New Zealand (DOC) (2011) Kākāpō. Available: http://www.doc.govt.nz/conservation/native-animals/birds/land-birds/kakapo/docs-work/. Accessed 2011 Aug.Department of Conservation New Zealand (DOC) (2011) Black Robin. Available: http://www.doc.govt.nz/conservation/native-animals/birds/land-birds/black-robin/docs-work/. Accessed 2011 Aug.RodriguesASL, AkçakayaHR, AndelmanSJ, BakarrMI, BoitaniL, et al. (2004) Global gap analysis: Priority regions for expanding the global protected area network. 54: 1092–1100.BeresfordAE, BuchananGM, DonaldPF, ButchartSHM, FishpoolLDC, et al. (2011) Poor overlap between the distribution of protected areas and globally threatened birds in Africa. 14: 99–107.LockwoodM (2010) Good governance for terrestrial protected areas: A framework, principles and performance outcomes. 91: 754–766.Eagles PFJ, McCool SF, Haynes CD (2002) Sustainable tourism in protected areas. Guidelines for planning and management. Gland: IUCN. 191 p.Emerton L, Bishop J, Thomas L (2006) Sustainable financing of protected areas: A global review of challenges and options. Gland: IUCN. 109 p.McCarthy DP, Donald PF, Scharlemann JPW, Buchanan GM, Balmford A, et al.. (2012) Financial costs of meeting global biodiversity conservation targets: Current spending and unmet needs. Science DOI: 10.1126/science.1229803.Buckley RC (2009) Parks and tourism. PLoS Biology 7(6) , e1000143.Castley JG (2010) Southern and Eastern Africa. In: Buckley RC, Conservation tourism. Wallingford: CAB International. pp. 145–175.BuckleyRC (2011) Tourism and environment. 36: 397–416.BookbinderMP, DinersteinE, RijalA, CauleyH, RajouriaA (1998) Ecotourism's support of biodiversity conservation. 12: 1399–1404.BuckleyRC (2003) Pay to play in parks. 11: 56–73.Tisdell C, Wilson C (2012) Nature-Based Tourism and Conservation. Cheltenham: Edward Elgar. 511p.Mansourian S, Dudley N (2008) Public funds to protected areas. Gland: WWF International. 43 p.Bovarnick A, Fernandez-Baca J, Galindo J, Negret H (2010) Financial sustainability of protected areas in Latin America and the Caribbean: Investment policy guideline. United Nations Development Programme (UNDP) and The Nature Conservancy (TNC). 162 p.MmopelwaG, BlignautJN (2006) The Okavango Delta: The value of tourism. 9: 113–127.SekharNU (2003) Local people's attitudes towards conservation and wildlife tourism around Sariska Tiger Reserve, India. 69: 339–347.WalpoleMJ, GoodwinHJ (2001) Local attitudes towards conservation and tourism around Komodo National Park, Indonesia. 28: 160–166.MbaiwaJE (2003) The socio-economic and environmental impacts of tourism development on the Okavango Delta, north-western Botswana. 54: 447–467.Buckley RC (2004) Environmental Impacts of Ecotourism. Wallingford: CAB International. 389 p.StevenR, PickeringC, CastleyJG (2011) A review of the impacts of nature based recreation on birds. 92: 2287–2294.BuckleyRC, CastleyJG, PegasFdeV, MossazAC, StevenR (2012) A population accounting approach to assess tourism contributions to conservation of IUCN-Redlisted mammal species. 7(9): e44134doi: 10.1371/journal.pone.0044134.MorrisonC, SimpkinsCA, CastleyJG, BuckleyRC (2012) Tourism and the conservation of critically endangered frogs. 7(9): e43757.IUCN (2011) The IUCN Red List of Threatened Species. Available: http://www.iucnredlist.org/. Accessed 2011 March.BirdLife International (2011) IUCN Red List for birds. Available: http://www.birdlife.org Accessed September 2011.WhittakerRJ (1995) Disturbed island ecology. 10: 421–425.Rocamora G, Skerrett A (2001) Seychelles. In: Fishpool L, Evand I editors. Important Bird Area in Africa and associated islands. Cambridge: Birdlife International. pp 751–768.ShahNJ (2001) Eradication of alien predators in the Seychelles: An example of conservation action on tropical islands. 10: 1219–1220.Department of Conservation New Zealand (DOC) (2011) Offshore islands and conservation. Mangere Island. Available: http://www.doc.govt.nz/conservation/land-and-freshwater/offshore-islands/mangere-and-rangatira-islands/mangere-island/. Accessed 2011 Aug.Benitez SP (2001) Visitor use fees and concession systems in protected areas: Galápagos National Park Case Study. Ecotourism Program Technical Report Series Number 3. Arlington: The Nature Conservancy. 19 p.ShareefR, McAleerM (2008) Modelling international tourism demand and uncertainty in Maldives and Seychelles: A portfolio approach. 78: 459–468.SmeralE (2010) Impacts of the world recession and economic crisis on tourism: Forecasts and potential risks. 49: 31–38.BalmfordA, BeresfordJ, GreenJ, NaidooR, WalpoleM, et al. (2009) A global perspective on trends in nature-based tourism. 7: 1–6.CousinsJA, SadlerJP, EvansJ (2008) Exploring the role of private wildlife ranching as a conservation tool in South Africa: Stakeholder Perspectives. 13: 43.Castley G, Knight M, Gordon J (2009) Making Conservation Work: Innovative Approaches to Meeting Conservation and Socio-economic Objectives (an Example from the Addo Elephant National Park, South Africa) In: Suich H, Child B, Spencelely A (eds) Evolution and Innovation in Wildlife Conservation: Parks and Game Ranches to Transfrontier Conservation Areas. SASUSG, IUCN, London: Earthscan. pp. 307–324.BuckleyR (2010) Safaris can help conservation. 467: 1047.BuckleyR, PablaHS (2012) Tourism ban won't help Indian tigers. 489: 33.BuckleyR (2012) Sustainable tourism: research and reality. 39: 528–546.BiggsD, TurpieJ, FabriciusJC, SpenceleyA (2011) The value of avitourism for conservation and job creation – an analysis from South Africa. 9: 80–90.Puhakka L, Salo M, Sääksjärvi IE (2011) Bird diversity, birdwatching tourism and conservation in Peru: A geographic analysis. PLoS ONE 6, e26786.VeríssimoD, FraserI, GroombridgeJ, BristolR, MacMillanDC (2009) Birds as tourism flagship species: a case study of tropical islands. 12: 549–558.BoothJE, GastonKJ, EvansKL, ArmsworthPR (2011) The value of species rarity in biodiversity recreation: A birdwatching example. 144: 2728–2732.HvenegaardGT (2002) Birder specialization differences in conservation involvement, demographics, and motivations. 7: 21–36.ŞekercioğluÇH (2002) Impacts of birdwatching on human and avian communities. 29: 282–289.ConnellJ (2009) Birdwatching, twitching and tourism: Towards an Australian perspective. 40: 203–217.