Power ME, Tilman D, Estes JA, Menge BA, Bond WJ, Mills LS, Daily G, Castilla JC,
Lubchenco J, Paine RT (1996) Challenges in the quest for keystones. Bioscience 46:609–620
Quenette PY, Alonso M, Chayron L, Cluzel P, Dubarry E, Dubreuil D, Palazón S, Pomarol M
(2000) Preliminary results of the first transplantation of brown bears in the French Pyrenees.
Ursus 12:115–120
Ripple WJ, Beschta RL (2006) Linking wolves to willows via risk-sensitive foraging by ungulates
in the northern Yellowstone ecosystem. For Ecol Manage 230(1–3):96–106. doi:10.1016/j.
foreco.2006.04.023
Ripple WJ, Beschta RL (2012) Trophic cascades in Yellowstone: the first 15 years after wolf
reintroduction. Biol Conser 145:205–213
Ritchie EG, Johnson CN (2009) Predator interactions, mesopredator release and biodiversity
conservation. Ecol Lett 12:982–998
Ritchie EG, Elmhagen B, Glen AS, Letnic M, Ludwig G, McDonald RA (2012) Ecosystem
restoration with teeth: what role for predators? Trends Ecol Evol 27:265–271
Rockwell D (1991) Giving voice to the bear, North American Indian myths, rituals and images of
the bear. Roberts Rinehart Publishers, Niwot, Colorado, USA
Rodríguez-Varela R, Ureña I, García N, Cregut-Bonmoure E, Mannino MA, Arsuaga JL,
Valdiosera C (2015) Ancient DNA evidence of Iberian lynx palaeoendemism. Quat Sci Rev
112:172–180
Rosenblatt AE, Heithaus MR, Mather ME, Matich P, Nifong JC, Ripple WJ, Silliman BR (2013)
The roles of large top predators in coastal ecosystems: new insights from long term ecological
research. Oceanography 26:156–167
Ruiz-Olmo J (1995) Llop. In: Ruiz-Olmo J, Aguilar A (eds) Atlas dels Grans Mamífers de
Catalunya. Lynx Ed, pp 136–139
Ruiz-Olmo J (2001) El misterioso lince de los Pirineos: muchos indicios pero sin evidencias en los
últimos cincuenta años. Quercus 182:12–19
Ruiz-Olmo J, Pomarol M, Macias M, Palazón S, Batet T, Lampreave G, López-Martín JM,
Such-Sanz À, Camps D, Mañas F, Parellada X, RodríguezI, Alàs J (2006) Informe tècnic per a
la valoració de la reintroducció del linx europeo Lynx lynx a Catalunya. Generalitat de
Catalunya-Forestal Catalana
Ruiz-Olmo J, Palazón S, Camps D, Quenette PY, Batet A, Antona X, Pla M, Villero D,
Decaluwe F, Brotons L, Melero Y (in press) Do reintroduced bears (Ursus arctos) present the
same habitat patterns as extinct native bears in the Pyrenees? Modeling distribution and habitat
quality
Sainz de la Maza P, Nunes J (2001) Los sistemas de información geográfica aplicados al estudio, la
gestión y la conservación del hábitat del oso pardo (Ursus arctos) en un área del Pirineo
catalán. Treballs de la Societat Catalana de Geografia 52:245–264
Schmitz OJ (1998) Direct and indirect effects of predation and predation risk in old-field
interaction webs. Am Nat 151:327–340
Schmitz OJ, Hamback PA, Beckerman AP (2000) Trophic cascades in terrestrial systems: a review
of the effects of carnivore removal on plants. Am Nat 155:141–153
Sergio F, Caro T, Brown D, Clucas B, Hunter J, Ketchum J, McHugh K, Hiraldo F (2008) Top
predators as conservation tools: ecological rationale, assumptions and efficacy. Annu Rev Ecol
Evol Syst 39:1–19
Soulé ME, Bolger ET, Alberts AC, Wright J, Sorice M, Hill S (1988) Reconstructed dynamics of
rapid extinctions of chaparral-requiring birds in urban habitat islands. Conserv Biol 2:75–92
Sunde P, Overskaug K, Kvam T (1999) Intraguild predation of lynxes on foxes: evidence of
interference competition? Ecography 22:521–523
Swenson JE, Dahle B, Busk H, Opseth O, Johansen T, Söderberg A, Wallin K, Cederlund G
(2007) Predation on moose calves by European Brown bears. J Wild Manag 71:1993–1997
Terborgh J (1988) The big things that run the world—a sequel to E. O. Wilson. Conser Biol
2:402–403
Terborgh J, Lopez L, Tello J, Yu D, Bruni AR (1997) Transitory states in relaxing land bridge
islands. In: Laurance WF, Bierregaard RO Jr (eds) Tropical forest remnants: ecology,
248
S. Palazón
Lubchenco J, Paine RT (1996) Challenges in the quest for keystones. Bioscience 46:609–620
Quenette PY, Alonso M, Chayron L, Cluzel P, Dubarry E, Dubreuil D, Palazón S, Pomarol M
(2000) Preliminary results of the first transplantation of brown bears in the French Pyrenees.
Ursus 12:115–120
Ripple WJ, Beschta RL (2006) Linking wolves to willows via risk-sensitive foraging by ungulates
in the northern Yellowstone ecosystem. For Ecol Manage 230(1–3):96–106. doi:10.1016/j.
foreco.2006.04.023
Ripple WJ, Beschta RL (2012) Trophic cascades in Yellowstone: the first 15 years after wolf
reintroduction. Biol Conser 145:205–213
Ritchie EG, Johnson CN (2009) Predator interactions, mesopredator release and biodiversity
conservation. Ecol Lett 12:982–998
Ritchie EG, Elmhagen B, Glen AS, Letnic M, Ludwig G, McDonald RA (2012) Ecosystem
restoration with teeth: what role for predators? Trends Ecol Evol 27:265–271
Rockwell D (1991) Giving voice to the bear, North American Indian myths, rituals and images of
the bear. Roberts Rinehart Publishers, Niwot, Colorado, USA
Rodríguez-Varela R, Ureña I, García N, Cregut-Bonmoure E, Mannino MA, Arsuaga JL,
Valdiosera C (2015) Ancient DNA evidence of Iberian lynx palaeoendemism. Quat Sci Rev
112:172–180
Rosenblatt AE, Heithaus MR, Mather ME, Matich P, Nifong JC, Ripple WJ, Silliman BR (2013)
The roles of large top predators in coastal ecosystems: new insights from long term ecological
research. Oceanography 26:156–167
Ruiz-Olmo J (1995) Llop. In: Ruiz-Olmo J, Aguilar A (eds) Atlas dels Grans Mamífers de
Catalunya. Lynx Ed, pp 136–139
Ruiz-Olmo J (2001) El misterioso lince de los Pirineos: muchos indicios pero sin evidencias en los
últimos cincuenta años. Quercus 182:12–19
Ruiz-Olmo J, Pomarol M, Macias M, Palazón S, Batet T, Lampreave G, López-Martín JM,
Such-Sanz À, Camps D, Mañas F, Parellada X, RodríguezI, Alàs J (2006) Informe tècnic per a
la valoració de la reintroducció del linx europeo Lynx lynx a Catalunya. Generalitat de
Catalunya-Forestal Catalana
Ruiz-Olmo J, Palazón S, Camps D, Quenette PY, Batet A, Antona X, Pla M, Villero D,
Decaluwe F, Brotons L, Melero Y (in press) Do reintroduced bears (Ursus arctos) present the
same habitat patterns as extinct native bears in the Pyrenees? Modeling distribution and habitat
quality
Sainz de la Maza P, Nunes J (2001) Los sistemas de información geográfica aplicados al estudio, la
gestión y la conservación del hábitat del oso pardo (Ursus arctos) en un área del Pirineo
catalán. Treballs de la Societat Catalana de Geografia 52:245–264
Schmitz OJ (1998) Direct and indirect effects of predation and predation risk in old-field
interaction webs. Am Nat 151:327–340
Schmitz OJ, Hamback PA, Beckerman AP (2000) Trophic cascades in terrestrial systems: a review
of the effects of carnivore removal on plants. Am Nat 155:141–153
Sergio F, Caro T, Brown D, Clucas B, Hunter J, Ketchum J, McHugh K, Hiraldo F (2008) Top
predators as conservation tools: ecological rationale, assumptions and efficacy. Annu Rev Ecol
Evol Syst 39:1–19
Soulé ME, Bolger ET, Alberts AC, Wright J, Sorice M, Hill S (1988) Reconstructed dynamics of
rapid extinctions of chaparral-requiring birds in urban habitat islands. Conserv Biol 2:75–92
Sunde P, Overskaug K, Kvam T (1999) Intraguild predation of lynxes on foxes: evidence of
interference competition? Ecography 22:521–523
Swenson JE, Dahle B, Busk H, Opseth O, Johansen T, Söderberg A, Wallin K, Cederlund G
(2007) Predation on moose calves by European Brown bears. J Wild Manag 71:1993–1997
Terborgh J (1988) The big things that run the world—a sequel to E. O. Wilson. Conser Biol
2:402–403
Terborgh J, Lopez L, Tello J, Yu D, Bruni AR (1997) Transitory states in relaxing land bridge
islands. In: Laurance WF, Bierregaard RO Jr (eds) Tropical forest remnants: ecology,
248
S. Palazón