Do fire and rainfall drive spatial and temporal population shifts in parrots? A case study using urban parrot populations

Davis, Adrian L. V.; Taylor, Charlotte; Major, Richard E.

doi:10.1016/j.landurbplan.2010.12.017

Cited by 25 publications

(24 citation statements)

References 34 publications

(52 reference statements)

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“…Seasonal movements of inland cockatoo species have been recorded in the Galah as well as Carnaby's Black-Cockatoo (Calytorhynchus latirostris) and Long-billed Corellas in south western Australia whereby populations migrate to coastal regions during the hot, dry summer months to exploit readily available water and softer foraging ground (Davis et al, 2011;Saunders, 1980;Smith and Moore, 1992). The urban landscape, however, may not support the large summer flocks of corellas during the breeding season and this, in addition to the corellas' strong affinity for the same annual breeding site, may result in these partly-nomadic parrots returning to their breeding range outside of the urban landscape (Higgins, 1999;Saunders, Smith, & Rowley, 1982).…”

Section: Seasonal Differencesmentioning

confidence: 99%

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Seasonal abundance and habitat use of Australian parrots in an urbanised landscape

Davis

Taylor

Major

2012

Landscape and Urban Planning

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Section: Seasonal Differencesmentioning

confidence: 99%

“…In some cases these urban populations appear to be periodically boosted by environmental stresses such as drought or bushfire (Burgin & Saunders, 2007;Davis, Taylor, & Major, 2011;Shukuroglou & McCarthy, 2006) or may exhibit a seasonal shift in abundance (Shukuroglou & McCarthy, 2006;Veerman, 1991;Waterhouse, 1997).…”

Section: Introductionmentioning

confidence: 99%

Seasonal abundance and habitat use of Australian parrots in an urbanised landscape

Davis

Taylor

Major

2012

Landscape and Urban Planning

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“…Australian parrots in cities can fluctuate in numbers during drier periods or after the occurrence of wildfires, possibly due to fluctuations in resources or the mortality of individuals (Davis et al . ). A fluctuation in resources has been suggested as the main driver predisposing the evolution of long‐distance movements in Neotropical birds (Levey & Stiles ) and may modify the pattern of local movements (Rey , Renton , Saracco et al .…”

Section: Discussionmentioning

confidence: 97%

“…Wildfires have been found to influence densities of parrot populations in surveys in extremely dry environments (Davis et al . ), and the highly unpredictable pattern of occurrence of fires in the Sierra Madre could be a factor that impacts the Maroon‐fronted Parrot. In addition, the breeding range of the Maroon‐fronted Parrot is commonly used as a recreational area by people from the two nearby cities of Monterrey and Saltillo, increasing the likelihood of the occurrence of human‐induced wildfires.…”

Section: Methodsmentioning

confidence: 99%

“…By comparison, the impact of natural stochastic or human‐induced catastrophic events, such as wildfires, is less well understood and their impact on the population dynamics of parrots has rarely been assessed (Davis et al . ). The scarcity of such studies may be due to the difficulty of gathering large datasets over a long time‐span in these long‐lived birds.…”

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Influence of stochastic processes and catastrophic events on the reproductive dynamics of the endangered Maroon‐fronted Parrot Rhynchopsitta terrisi

Ortiz-Maciel

Salinas-Melgoza

Valdez-Juarez

et al. 2014

Ibis

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Stochastic and catastrophic events may strongly impact the dynamics of wild populations. Annual fluctuations in rainfall may affect parrot populations, but few studies address the impact of other stochastic or catastrophic events on their population dynamics. The Maroon‐fronted Parrot Rhynchopsitta terrisi is an endangered species that nests colonially in cavities and crevices in limestone cliffs. From 1995 to 2010, we quantified Parrot attendance at nesting colonies throughout its breeding range, and reproductive output of nesting Parrots from 1997 to 2010 at the two most important nesting colonies. There was significant variation among colonies in the number of cavities occupied by Parrots each year. Rainfall significantly influenced both the number of occupied cavities and productivity, which declined after very dry years. Natural unpredictable events such as hurricanes did not modify the nesting activity of Maroon‐fronted Parrots at breeding colonies. However, wildfires increased in dry years, negatively affecting attendance at breeding colonies. The Maroon‐fronted Parrot may overcome the impacts of climatic variability, natural stochastic processes, and human‐induced catastrophic events by using nesting colonies as a network of resources throughout the breeding range. Given the current trends in climate change, it is likely the species may suffer stronger and more frequent unpredictable catastrophic events, potentially putting at risk its survival in the long term.

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Shelter availability and human attitudes as drivers of rock hyrax (Procavia capensis) expansion along a rural–urban gradient

Ben‐Moshe

Iwamura‏

2020

Ecology and Evolution

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While anthropogenic land-use changes threaten wildlife globally, some species take advantage of such changes and disperse into urban areas. The wildlife in urban areas often promotes conflicts with humans, notably when the animals are associated with the spread of zoonotic diseases. In Israel, current urban invasion of rock hyraxes (Procavia capensis) draws public attention, since the species is a reservoir host of cutaneous leishmaniasis, a serious skin disease. The rock hyrax, however, has seldom been studied in densely populated areas, and the drivers for its urban expansion, as well as its abilities to live and spread in core urban areas, are relatively unknown.Here, we explore the rock hyrax expansion to urban areas process by examining the availability, characteristics and use of shelter along an urban gradient. Our findings suggest that a series of factors determines shelter availability and quality for the rock hyrax, which facilitates its dispersion across the urban gradient. We found that rock hyraxes from the Judean Desert expand to the peri-urban region of Jerusalem by colonizing new rocky shelters formed as by-products of urban development. With their populations reaching extreme densities in this area and saturating the available shelters, there is some spill over to the adjacent core urban areas where they colonize littered sites, which are made available due to the local socio-economic conditions and cultural norms of waste disposal and illegal placement of temporary structures.Our work emphasizes the significance of the urban gradient approach for studying the mechanisms promoting wildlife expansion to cities. Our findings suggest that changes in shelter availability and quality due to urban development, and cultural norms promote shifts of the hyrax population by pushing from the already established areas and pulling into new environment across the urban gradient. K E Y W O R D S invasion biology, Leishmania tropica, urban wildlife, zoonotic diseases | 4045 BEN-MOSHE aNd IWaMURa

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Do fire and rainfall drive spatial and temporal population shifts in parrots? A case study using urban parrot populations

Cited by 25 publications

References 34 publications

Seasonal abundance and habitat use of Australian parrots in an urbanised landscape

Seasonal abundance and habitat use of Australian parrots in an urbanised landscape

Influence of stochastic processes and catastrophic events on the reproductive dynamics of the endangered Maroon‐fronted Parrot Rhynchopsitta terrisi

Shelter availability and human attitudes as drivers of rock hyrax (Procavia capensis) expansion along a rural–urban gradient

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