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M. Pautasso (2007)
Scale dependence of the correlation between human population presence and vertebrate and plant species richness.Ecology letters, 10 1
Sánchez‐Zapata Sánchez‐Zapata, Donázar Donázar, Delgado Delgado, Forero Forero, Ceballos Ceballos, Hiraldo Hiraldo (2007)
Desert locust outbreaks in the Sahelresource competition predation and ecological effects of pest control, 44
J. Grande, D. Serrano, G. Tavecchia, M. Carrete, O. Ceballos, R. Díaz-Delgado, J. Tella, J. Donázar (2009)
Survival in a long-lived territorial migrant: effects of life-history traits and ecological conditions in wintering and breeding areasOikos, 118
E. Box, B. Holben, V. Kalb (1989)
Accuracy of the AVHRR vegetation index as a predictor of biomass, primary productivity and net CO2 fluxVegetatio, 80
Davies Davies, Orme Orme, Storch Storch, Olson Olson, Thomas Thomas, Ross Ross, Ding Ding, Rasmussen Rasmussen, Bennett Bennett, Owens Owens, Blackburn Blackburn, Gaston Gaston (2007)
Topography, energy and the global distribution of bird species richnessProc. Roy. Soc. Lond. Ser. B Biol. Sci., 274
A. Wezel, T. Rath (2002)
Resource conservation strategies in agro-ecosystems of semi-arid West AfricaJournal of Arid Environments, 51
K. Evans, P. Warren, K. Gaston (2005)
Species‐energy relationships at the macroecological scale: a review of the mechanismsBiological Reviews, 80
E. Milner‐Gulland, E. Bennett (2003)
Wild meat: the bigger pictureTrends in Ecology and Evolution, 18
J. Brashares, J. Brashares, P. Arcese, M. Sam, P. Coppolillo, A. Sinclair, A. Balmford, A. Balmford (2004)
Bushmeat Hunting, Wildlife Declines, and Fish Supply in West AfricaScience, 306
J. Sánchez‐Zapata, M. Carrete, Andrei Gravilov, S. Sklyarenko, O. Ceballos, J. Donázar, F. Hiraldo (2003)
Land use changes and raptor conservation in steppe habitats of Eastern KazakhstanBiological Conservation, 111
Welsh Welsh, Cunningham Cunningham, Donnelly Donnelly, Lindenmayer Lindenmayer (1996)
Modelling the abundance of rare speciesstatistical models for counts with extra zeros, 88
G. Luck, T. Ricketts, G. Daily, M. Imhoff (2003)
Alleviating spatial conflict between people and biodiversityProceedings of the National Academy of Sciences of the United States of America, 101
Andrew Balmford, Joslin Moore, Thomas Brooks, Neil Burgess, Louis Hansen, Paul Williams, Carsten Rahbek (2001)
Conservation conflicts across Africa.Science, 291 5513
Thiollay Thiollay (2006a)
The decline of raptors in West Africalong-term assessment and the role of protected areas, 148
J. Anadón, A. Giménez, M. Martínez, Julia Martinez, I. Pérez, M. Esteve (2006)
Factors determining the distribution of the spur‐thighed tortoise Testudo graeca in south‐east spain: a hierarchical approachEcography, 29
K. Gaston (2005)
Biodiversity and extinction: species and peopleProgress in Physical Geography, 29
Jonathan Chase, M. Leibold (2002)
Spatial scale dictates the productivity–biodiversity relationshipNature, 416
Rodríguez‐Estrella Rodríguez‐Estrella (2007)
Land use changes affect distributional patterns of desert birds in the Baja CaliforniaDivers. Distrib., 13
D. Lambert (1992)
Zero-inflacted Poisson regression, with an application to defects in manufacturingQuality Engineering, 37
F. Sergio, T. Caro, Danielle Brown, B. Clucas, J. Hunter, James Ketchum, K. McHugh, F. Hiraldo (2008)
Top Predators as Conservation Tools: Ecological Rationale, Assumptions, and EfficacyAnnual Review of Ecology, Evolution, and Systematics, 39
Ç. Şekercioğlu, G. Daily, P. Ehrlich (2004)
Ecosystem consequences of bird declinesProceedings of the National Academy of Sciences of the United States of America, 101
R. Davies, C. Orme, D. Storch, V. Olson, G. Thomas, S. Ross, Tzung-Su Ding, P. Rasmussen, P. Bennett, I. Owens, T. Blackburn, K. Gaston (2007)
Topography, energy and the global distribution of bird species richnessProceedings of the Royal Society B: Biological Sciences, 274
J. Donázar, O. Ceballos, A. Travaini, F. Hiraldo (1993)
ROADSIDE RAPTOR SURVEYS IN THE ARGENTINEAN PATAGONIAJournal of Raptor Research, 27
M. Carrete, J. Tella, G. Blanco, M. Bertellotti (2009)
Effects of habitat degradation on the abundance, richness and diversity of raptors across Neotropical biomesBiological Conservation, 142
K. Evans, S. Newson, D. Storch, J. Greenwood, K. Gaston (2008)
Spatial scale, abundance and the species-energy relationship in British birds.The Journal of animal ecology, 77 2
M. Carrete, J. Grande, J. Tella, J. Sánchez‐Zapata, J. Donázar, R. Díaz-Delgado, A. Romo (2007)
Habitat, human pressure, and social behavior: Partialling out factors affecting large-scale territory extinction in an endangered vultureBiological Conservation, 136
Sergio Sergio, Caro Caro, Brown Brown, Clucas Clucas, Hunter Hunter, Ketchum Ketchum, McHugh McHugh, Hiraldo Hiraldo (2008)
Top predators as conservation toolsecological rationale, assumptions, and efficacy, 9
(2006)
Social Affairs
Neil Rooney, K. McCann, G. Gellner, J. Moore (2006)
Structural asymmetry and the stability of diverse food websNature, 442
Anadón (2006)
Factors determining the distribution of the spur-thighed tortoise Testudo graeca in southeast Spaina hierarchical approach, 29
Lennart Olsson, L. Eklundh, J. Ardö (2005)
A recent greening of the Sahel—trends, patterns and potential causesJournal of Arid Environments, 63
K. Crooks, M. Soulé (1999)
Mesopredator release and avifaunal extinctions in a fragmented systemNature, 400
P. Murtaugh (2009)
Performance of several variable-selection methods applied to real ecological data.Ecology letters, 12 10
Sanet Hugo, B. Rensburg (2008)
The maintenance of a positive spatial correlation between South African bird species richness and human population densityGlobal Ecology and Biogeography, 17
F. Sanderson, P. Donald, D. Pain, I. Burfield, F. Bommel (2006)
Long-term population declines in Afro-Palearctic migrant birdsBiological Conservation, 131
Fuller Fuller, Mosher Mosher (1981)
Methods of detecting and counting raptorsa review, 6
P. Mayaux, E. Bartholomé, S. Fritz, A. Belward (2004)
A new land‐cover map of Africa for the year 2000Journal of Biogeography, 31
P. Dolman (1996)
Birds in Europe: Their conservation status
Le Blanc Le Blanc, Perez Perez (2008)
The relationship between rainfall and human density and its implications for future water stress in sub‐Saharan AfricaEcol. Econ., 66
R. Rodríguez-Estrella, J. Donázar, F. Hiraldo (1998)
Raptors as Indicators of Environmental Change in the Scrub Habitat of Baja California Sur, MexicoConservation Biology, 12
K. Evans, J. Greenwood, K. Gaston (2005)
Dissecting the species–energy relationshipProceedings of the Royal Society B: Biological Sciences, 272
Reese Reese, Wilson Wilson, Hoeting Hoeting, Flather Flather (2005)
Factors affecting distribution predictionsa simulation modeling experiment, 15
N. Zeng, Jinho Yoon (2009)
Expansion of the world's deserts due to vegetation‐albedo feedback under global warmingGeophysical Research Letters, 36
K. Gaston, R. Fuller (2007)
Biodiversity and extinctionProgress in Physical Geography, 31
P. Laiolo, J. Tella (2006)
Fate of unproductive and unattractive habitats: recent changes in Iberian steppes and their effects on endangered avifaunaEnvironmental Conservation, 33
K. Evans, Neil James, K. Gaston (2006)
Abundance, species richness and energy availability in the North American avifaunaGlobal Ecology and Biogeography, 15
K. Burnham, David Anderson (2003)
Model selection and multimodel inference : a practical information-theoretic approachJournal of Wildlife Management, 67
F. Sergio, I. Newton, L. Marchesi, P. Pedrini (2006)
Ecologically justified charisma: preservation of top predators delivers biodiversity conservationJournal of Applied Ecology, 43
Thiollay Thiollay (2007)
Raptor declines in West Africacomparisons between protected buffer and cultivated areas, 41
J. Thiollay (2006)
Large Bird Declines with Increasing Human Pressure in Savanna Woodlands (Burkina Faso)Biodiversity & Conservation, 15
Grande Grande, Serrano Serrano, Tavecchia Tavecchia, Carrete Carrete, Ceballos Ceballos, Diaz‐Delgado Diaz‐Delgado, Tella Tella, Donazar Donazar (2009)
Survival in a long‐lived territorial migranteffects of life-history traits and ecological conditions in wintering and breeding areas, 118
O. Gordo, L. Brotóns, X. Ferrer, Pere Comas (2005)
Do changes in climate patterns in wintering areas affect the timing of the spring arrival of trans‐Saharan migrant birds?Global Change Biology, 11
K. Evans, K. Gaston (2005)
People, energy and avian species richnessGlobal Ecology and Biogeography, 14
Gaston Gaston (2005)
Biodiversity and extinctionspecies and people, 29
Francis Meunier, C. Verheyden, P. Jouventin (2000)
Use of roadsides by diurnal raptors in agricultural landscapesBiological Conservation, 92
Milner‐Gulland Milner‐Gulland, Bennett Bennett (2003)
Wild meatthe bigger picture, 18
K. Thompson, Allan Jones (1999)
Human Population Density and Prediction of Local Plant Extinction in BritainConservation Biology, 13
(2006)
Vulture Research Soars as the Scavengers' Numbers DeclineScience, 312
K. Duraiappah, Naeem, S., Wri, Millennium Board (2005)
Ecosystems and Human Well-Being: Biodiversity Synthesis, 2005
J. Thiollay (2006)
The decline of raptors in West Africa: long‐term assessment and the role of protected areasIbis, 148
I. Held, T. Delworth, Jian Lu, K. Findell, T. Knutson (2005)
Simulation of Sahel drought in the 20th and 21st centuries.Proceedings of the National Academy of Sciences of the United States of America, 102 50
A. Welsh, R. Cunningham, C. Donnelly, D. Lindenmayer (1996)
Modelling the abundance of rare species: statistical models for counts with extra zerosEcological Modelling, 88
M. Fuller, J. Mosher (1981)
Methods of detecting and counting raptors: A review
T. Lovejoy, G. Meffe, C. Carroll (1995)
Principles of Conservation BiologyCopeia, 1995
J. Rhodes, C. McAlpine, A. Zuur, Graham Smith, E. Ieno (2009)
GLMM Applied on the Spatial Distribution of Koalas in a Fragmented Landscape
J. Brashares, P. Arcese, M. Sam (2001)
Human demography and reserve size predict wildlife extinction in West AfricaProceedings of the Royal Society of London. Series B: Biological Sciences, 268
J. Sánchez‐Zapata, J. Calvo (1999)
Raptor distribution in relation to landscape composition in semi‐arid Mediterranean habitatsJournal of Applied Ecology, 36
(1988)
Road transects for raptors: how reliable are they
J. Sánchez‐Zapata, J. Donázar, A. Delgado, M. Forero, O. Ceballos, F. Hiraldo (2007)
Desert locust outbreaks in the Sahel: resource competition, predation and ecological effects of pest controlJournal of Applied Ecology, 44
R. Rodríguez-Estrella (2007)
Land use changes affect distributional patterns of desert birds in the Baja California peninsula, MexicoDiversity and Distributions, 13
(2003)
Drought in the SahelScience, 302
Clairie Papazoglou, Konstantin Kreiser, Z. Waliczky, I. Burfield (2004)
Birds in the European Union : a status assessment
D. Pain, A. Cunningham, P. Donald, J. Duckworth, D. Houston, Todd Katzner, J. Parry-Jones, C. Poole, V. Prakash, P. Round, R. Timmins (2003)
Causes and Effects of Temporospatial Declines of Gyps Vultures in AsiaConservation Biology, 17
Evans Evans, Greenwood Greenwood, Gaston Gaston (2005)
Dissecting the species–energy relationshipProc. Roy. Soc. Lond. Ser B. Biol. Sci, 272
D. Ellis, R. Glinski, D. Smith (1990)
RAPTOR ROAD SURVEYS IN SOUTH AMERICAJournal of Raptor Research, 24
M. Darkoh (2003)
Regional perspectives on agriculture and biodiversity in the drylands of AfricaJournal of Arid Environments, 54
C. Ryall (1998)
Principles of conservation biologyEnvironmentalist, 19
J. Thiollay (2007)
Raptor declines in West Africa: comparisons between protected, buffer and cultivated areasOryx, 41
Millsap Millsap, Lefranc Lefranc (1988)
Road transects for raptorshow reliable are they?, 22
G. Reese, K. Wilson, J. Hoeting, C. Flather (2005)
FACTORS AFFECTING SPECIES DISTRIBUTION PREDICTIONS: A SIMULATION MODELING EXPERIMENTEcological Applications, 15
Walter Reid (2005)
Millennium Ecosystem Assessment
Sergio Sergio, Newton Newton, Marchesi Marchesi, Pedrini Pedrini (2006)
Ecologically justified charismapreservation of top predators delivers biodiversity conservation, 43
Carrete Carrete, Grande Grande, Tella Tella, Sánchez‐Zapata Sánchez‐Zapata, Donázar Donázar, Díaz‐Delgado Díaz‐Delgado, Romo Romo (2007)
Habitat, human pressure, and social behaviorpartialling out factors affecting large-scale territory extinction in an endangered vulture, 136
In the current scenario of biodiversity crisis there is a growing need for identifying causes of changes in biodiversity at large scales. Here we assess factors driving raptor community structure in the Sahel, a region suffering a wide range of environmental degradation and a vital area for European migrant birds. Using road surveys, we estimated the effects of population size, human settlement patterns (e.g. urban vs. nomadic) and land use on the raptor community, taking into account the major natural role played by productivity. Total raptor richness values were similar to those described for other steppe regions of the world, with one super‐abundant migrant species, the black kite Milvus migrans; however, richness of resident raptors was strikingly lower than expected, with most large body‐size African species (both eagles and vultures) absent. Raptor richness was strongly correlated with human activities in a scale‐dependent fashion. At a 25 km resolution, raptor richness was driven by habitat and productivity, with a positive response to crops. At a smaller scale, human population was positively related with wintering species richness but negatively with richness of resident ones, perhaps as a consequence of non‐agricultural activities such as direct harvesting and different forms of habitat degradation (e.g. overgrazing or firewood collection). Subsistence economies in systems with low natural environmental heterogeneity and with a human population over carrying capacity, such as the Sahel, may lead to exhausted biological systems even in the absence of intensive agricultural or urban land‐use changes, as shown by the deeply impoverished sedentary raptor community. Our results suggest that, because habitat and productivity seem to play a relevant role in driving species richness, climate change may have a major effect on the raptor community of the Sahel.
Animal Conservation – Wiley
Published: Oct 1, 2010
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