A note on the potential role of philopatry and conspecific attraction as conservation tools in Audouin's Gull Larus audouinii

Martínez‐Abraín, Alejandro; Viedma, Covadonga; Ramón, Natalia; Oró, Daniel

doi:10.1017/s0959270901000223

Cited by 10 publications

(10 citation statements)

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“…Under this scenario of no density dependence (an essential mechanism invoked to explain the IDD model; see and references therein), one question naturally arose: why did hundreds of birds select such a bad, poor‐quality, and peculiar patch? Several nonexclusive hypotheses might account for this phenomenon: birds colonizing the bare patch were attracted by conspecifics to the largest, denser subcolony, as is commonly recorded, especially in social species (i.e., the conspecific attraction; see Stenhouse and Montevecchi 2000, Green and Stamps 2001, Martínez‐Abrain et al 2001, Serrano et al 2004). Thus, birds probably used a social cue to erroneously select a poor patch for breeding.…”

Section: Discussionmentioning

confidence: 99%

Living in a Ghetto Within a Local Population: An Empirical Example of an Ideal Despotic Distribution

Oro

2008

Ecology

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Section: Discussionmentioning

confidence: 99%

Living in a Ghetto Within a Local Population: An Empirical Example of an Ideal Despotic Distribution

Oro

2008

Ecology

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“…introductions). This is being attempted with Audouin's gull in the western metapopulation, where a new local population is trying to be formed at Benidorm Island using management tools such as conspecific attraction (decoys) and hacking of chicks coming from other colonies (see also Martínez-Abraín et al, 2001). In the Mediterranean, we know from the fossil records that reduction of suitable patches for breeding seabirds is probably an ancient process related to the human colonisation of islands and marshes.…”

Section: The Audouin's Gull Casementioning

confidence: 99%

Managing seabird metapopulations in the Mediterranean: constraints and challenges

Oró¹

2003

Sci. Mar.

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SUMMARY: In recent times metapopulation models have contributed important insights to conservation, and they have inspired field studies that focus on collecting key data on demography and movement. Seabirds are suitable models for studying ecological processes in metapopulations because they breed in discrete local populations (i.e. colonies) both in space and time. However, in the Mediterranean, seabird colonies mostly show conservation problems at an ecosystem level, linked to human activities (e.g. fisheries, tourism, industrial pollution) and the resulting loss of habitat and deterioration of habitat quality. From a conservation point of view, it is crucial to study transfer processes in seabird metapopulations (i.e. emigration, immigration and colonisation) in order to propose management measures. Conservation agencies should always take into account these processes and the spatial factor involved in metapopulation dynamics. However, it is difficult to estimate demographic parameters at a metapopulation level because of technical and financial constraints. In addition, there is a need to act at large geographical scales, since seabirds are wide-ranging species, which operate in ranges beyond political boundaries and far greater than those encompassed by traditional management practices.Key words: metapopulation, conservation, dispersal, transfer processes, management policies, research, rescue effect, multisite capture-recapture models, Mediterranean. RESUMEN: LA GESTIÓN DE LAS METAPOBLACIONES EN EL MEDITERRÁNEO: LÍMITES Y DESAFÍOS. -La modelización de metapoblaciones ha aportado importantes avances en la ecología de la conservación, y ha inspirado trabajos de campo centrados en la recogida de datos sobre demografía y movimiento entre poblaciones. Las aves marinas son modelos apropiados para estudiar procesos ecológicos en metapoblaciones ya que crían en poblaciones locales discretas (i.e. colonias) tanto en el espacio como en el tiempo. En el Mediterráneo, además, las colonias de aves marinas suelen presentar problemas de conservación al nivel de ecosistema, principalmente relacionados con las actividades humanas (p. ej. pesquerías, turismo, contaminación) que han resultado en una pérdida y/o deterioro de hábitats de calidad. Desde el punto de vista de la conservación, es crucial estudiar los procesos de transferencia en metapoblaciones de aves marinas (i.e. emigración, inmigración y colonización) para proponer medidas de manejo. Las agencias de conservación deberían tener siempre en cuenta estos procesos y el factor espacial involucrado en la dinámica de las metapoblaciones. No obstante, es difícil estimar parámetros demográficos a nivel metapoblacional a causa de las limitaciones técnicas y económicas que normalmente supone. Además, es indispensable actuar a una elevada escala geográfica, pues las aves marinas son muy móviles, y desarrollan sus funciones más allá de las fronteras políticas, a una escala mucho mayor de la que se ha considerado tradicionalmente en los esfuerzos de gestión.Palabras clave: ...

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“…As a result, birds were attracted and founded new colonies. This technique has been used successfully on a number of colonial bird species (Podolsky 1990; Podolsky & Kress 1992; Blokpoel et al 1997; Jeffries & Brunton 2001; Martinez‐Abrain et al 2001).…”

Section: Introductionmentioning

confidence: 99%

Conspecific Attraction and the Conservation of Territorial Songbirds

Ward¹,

Schlossberg²

2004

Conservation Biology

207

209

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Conspecific attraction, the tendency for individuals of a species to settle near one another, is well described in colonial species, especially birds. Although this behavior may occur in territorial birds, evidence has been lacking. If territorial birds do exhibit this behavior, it would have major conservation implications. Birds could potentially be attracted to specific sites with artificial stimuli, making conservation of those species more efficient. In 2001 and 2002, we tested whether conspecific attraction occurs in an endangered, territorial songbird, the Black-capped Vireo (Vireo atricapilla) by playing vireo vocalizations in unoccupied habitats at Fort Hood, Texas. We were successful in attracting 73 birds to five experimental sites in 2001 and 75 birds to seven experimental sites in 2002. No birds settled on comparable control sites. Many birds attracted to the vocalizations paired and bred. At most research sites the primary threat to the species, the brood-parasitic Brown-headed Cowbird (Molothrus ater), was controlled, allowing vireos to achieve high nesting success relative to a nearby, unmanipulated population. Second-year birds were more responsive to conspecific vocalizations than older birds, as they were more common on experimental sites than in the established population. In 2002 birds recolonized experimental sites from 2001 where vocalizations were not played in 2002, indicating that 1 year of playbacks may be sufficient to establish a population. Our results provide the first experimental evidence that territorial songbirds use the presence of conspecifics when deciding where to settle and suggest that conspecific attraction may provide a valuable conservation tool. Resumen: La atracción conespecífica, tendencia de los individuos de una especie a establecerse cerca de otro de la misma especie, está bien descrita en especies coloniales, especialmente aves. Aunque este comportamiento puede ocurrir en aves territoriales, se carece de evidencia. Si aves territoriales muestran este comportamiento, tendría implicaciones mayores en la conservación. Las aves potencialmente serían atraídas a sitios específicos mediante estímulos artificiales, haciendo más eficiente la conservación de esas especies. En 2001 y 2002, probamos si ocurre la atracción conespecífica en una especie de ave canora territorial, en peligro, Vireo atricapilla, con la reproducción de vocalizaciones de vireo en hábitats desocupados en Fort Hood, Texas. Tuvimoś exito al atraer a 73 aves a cinco sitios experimentales en 2001 y 75 aves a siete sitios experimentales en 2002. No se establecieron aves en sitios controles comparables. Muchas de las aves atraídas a las vocalizaciones formaron pareja y se reprodujeron. En la mayoría de los sitios, la principal amenaza para la especie, el parásito Molothrus ater, fue controlada, lo que permitió un elevadoéxito de anidación a los vireos en comparación con una población no manipulada cercana. Las aves de dos años tuvieron mayor respuesta a las vocalizaciones conespecíficas que las aves más v...

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A note on the potential role of philopatry and conspecific attraction as conservation tools in Audouin's Gull Larus audouinii

Cited by 10 publications

References 8 publications

Living in a Ghetto Within a Local Population: An Empirical Example of an Ideal Despotic Distribution

Living in a Ghetto Within a Local Population: An Empirical Example of an Ideal Despotic Distribution

Managing seabird metapopulations in the Mediterranean: constraints and challenges

Conspecific Attraction and the Conservation of Territorial Songbirds

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