Responses of ‘resistant’ vertebrates to habitat loss and fragmentation: the importance of niche breadth and range boundaries

Swihart, Robert K.; Gehring, Thomas M.; Kolozsvary, Mary Beth; Nupp, Thomas E.

doi:10.1046/j.1472-4642.2003.00158.x

Cited by 245 publications

(199 citation statements)

References 81 publications

(121 reference statements)

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“…Firstly, theory predicts that among ecologically similar species, local abundance is positively related to the number of microhabitats used (Brown 1984, Hughes 2000, which appears to apply to a number of reef fish groups (Meekan et al 1995, Munday 2000, Bean et al 2002. Secondly, changes to habitat availability are predicted to affect habitat specialists more than habitat generalists (Swihart et al 2003). Again a number of comparative studies have supported this conclusion (Clarke 1996, Munday 2004.…”

Section: Introductionmentioning

confidence: 98%

“…Knowledge of the range of variation in habitat use within and among species is necessary to understand how populations are regulated and ecological communities are structured (Morris 1988, Begon et al 1996, Fryxell & Lundberg 1998). This information is also vital to predict how individual species and whole communities will respond to the degradation of their habitats (Hawkins et al 2000, Swihart et al 2003. Species are known to vary along a continuum from extreme habitat specialists, restricted to a single habitat, to extreme generalists capable of living in many different habitats (Fox & Morrow 1981, Futuyama & Moreno 1988, MacNally 1995.…”

Section: Introductionmentioning

confidence: 99%

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Habitat specialisation and overlap in a guild of coral reef cardinalfishes (Apogonidae)

Gardiner¹,

Jones²

2005

Mar. Ecol. Prog. Ser.

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The nocturnally foraging cardinalfishes are known to exhibit a high degree of fidelity to their daytime resting sites. However, the microhabitats chosen as resting sites, the degree of specialisation on live coral substrata and the degree of overlap among apogonid species have not been described. These patterns potentially affect how declining coral availability will impact the diversity and abundance of apogonid assemblages. Here, microhabitat use, abundances and patterns of cooccurrence are examined for 10 common reef-dwelling apogonids in Kimbe Bay, Papua New Guinea. Nine of the 10 species were strongly associated with live scleractinian corals, with more than 80% of the individuals resting in branching forms. The exception was Apogon nigrofasciatus, a specialist on cave or crevice habitats. Among the available coral species, the vast majority of cardinalfishes were associated with a single coral species (Porites cylindrica), although the degree of specialisation varied among species. Apogon leptacanthus and Sphaeramia nematoptera were almost always only found on P. cylindrica, while Apogon bandanensis, Apogon compressus, Apogon fragilis, Archamia fucata, Archamia zosterophora, Cheilodipterus artus and C. quinquelineatus also used a range of other corals. There was a positive relationship between the range of substratum types used and the number of groups of each species observed. The 9 coral-dwelling apogonids exhibited a high degree of overlap in depth range and in the use of coral microhabitats. Over 75% of aggregations were made up of more than one fish species. The high level of both specialisation and overlap in habitat use suggests that the future biodiversity of cardinalfishes in Kimbe Bay could be linked to the fate of a single coral species.

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Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Habitat specialisation and overlap in a guild of coral reef cardinalfishes (Apogonidae)

Gardiner¹,

Jones²

2005

Mar. Ecol. Prog. Ser.

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“…Esto difiere respecto al periodo de trampeo del estudio publicado en el 2010, en donde la entrada al público en general estaba restringida en el PANEC, el cual actualmente puede recibir hasta 11 mil personas al año (Siurob, 2014). En el caso de la Reserva Comunitaria Zibatá, al ser una zona residencialecológica en construcción, el paso de maquinaria pesada, el flujo constante de trabajadores y la destrucción de las zonas naturales pudieran influenciar el desplazamiento de la fauna silvestre a zonas menos perturbadas (Swihart et al, 2003).…”

Section: Discussionunclassified

Perfil sanguíneo y análisis de la seroprevalencia de Leptospira interrogans en zorra gris (Urocyon cinereoargenteus) y coyote (Canis latrans) en dos zonas suburbanas de la ciudad de Querétaro

Zamora-Ledesma

Hernández‐Camacho

Olvera-Ramírez

et al. 2016

AZM

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En 2010 se publicó un estudio sobre la presencia de diversas serovariedades de Leptospira interrogans en individuos de coyote y zorra gris en una área natural protegida situada al sur de la ciudad de Querétaro en México, en donde se daba a conocer la alta prevalencia de distintas serovariedades de L. interrogans en cánidos silvestres en Querétaro, México. El presente estudio se llevó a cabo para actualizar los valores de infección de L. interrogans presente en las poblaciones de cánidos silvestres en Querétaro, incluyendo la localidad de muestreo original de 2010, el Parque Nacional El Cimatario. Se capturaron nueve cánidos silvestres en dos localidades que cuentan con un plan de manejo orientado hacia su conservación, el Parque Nacional El Cimatario y la Reserva Comunitaria Zibatá. Ninguna de las muestras de los cánidos presentó valores positivos a las diferentes serovariedades de L. interrogans. A su vez, los valores de hemograma y perfil bioquímico de todos los cánidos se mantuvieron dentro de los intervalos de referencia; sin embargo se encontraron diferencias en los valores VGM, CMGH, neutrófilos segmentados y no segmentados, monocitos, aspartato aminotransferasa y urea de algunos cánidos. Se descartó la posibilidad de que dichos hallazgos estuvieran relacionados con enfermedad causada por el agente de interés debido a las peculiaridades del proceso de captura y contención de fauna silvestre.

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“…Each species occupies a specific ecological niche that helps to define its' and the population's role in contributing to ecosystem processes and in maintaining ecosystem health and resilience (Swihart et al 2003;Swihart et al 2006). Populations may be widespread, increasing or decreasing in area, temporarily stable but always dynamic.…”

Section: Halting the Declinementioning

confidence: 99%

Habitat loss and landscape degradation: the disastrous outlook for vertebrate fauna in central western NSW

Kerle¹,

Goldney²,

Fleming³

2014

Australian Zoologist

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Since European settlement this landscape has been dramatically altered resulting in a loss of native vegetation cover, destruction of soil quality and structure, disruption of the landscape hydrology and the introduction of pests and weeds (Bauer and Goldney 2000;Letnic 2000;Kerle et al. 2007;Windsor et al. 2004 ABSTRACTThe Central West and Lachlan Catchments lie west of the Great Dividing Range in central NSW and have been subjected to extensive land clearing, grazing and agricultural pressures beginning in the 1820s. Many vertebrate species are known to have disappeared from these catchments but reliable data for species diversity, distribution, abundance and conservation status are not available. For this assessment of the diversity and status of the vertebrate fauna in these catchment areas a comprehensive database of vertebrate records was established, species distributions mapped, faunal communities determined by pattern analysis and conservation status determined at a regional level. The extent of post-European human-induced landscape change was evaluated by assessing the degree of habitat loss, loss of landscape function and resilience through changes to the water cycle, soil and energy flow and the impact of invasive species, diseases and agricultural pollution.Of the 595 vertebrate species verified for these catchments, 6% are introduced, 12% have been listed in NSW under the Threatened Species Conservation Act 1995, 4% by the Commonwealth Environment Protection and Biodiversity Conservation Act 1999, 40% are regionally vulnerable, 20% regionally endangered and 2% likely to have become extinct in the region. Overall we estimate that 64% (382) of species are declining. These statistics present a grim picture of the survival of vertebrates in these catchments and potentially for the sheep-wheat belt of eastern Australia. The extreme loss of habitat and its poor condition across much of these catchments followed by serious changes to the functioning of the landscape provide clear reasons for the catastrophic decline of vertebrates in this landscape. If this serious decline in the Central West and Lachlan catchments is to be halted, strategies aimed at habitat and landscape restoration must be developed. Current strategies based on Threatened Species management plans and ad hoc planting for revegetation have not produced results. We need a radical rethink.

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Responses of ‘resistant’ vertebrates to habitat loss and fragmentation: the importance of niche breadth and range boundaries

Abstract: An ability to predict species' sensitivities to habitat loss and fragmentation has important conservation implications, and numerous hypotheses have been proposed to explain interspecific differences observed in human-dominated landscapes. We used occupancy data collected on

Cited by 245 publications

References 81 publications

Habitat specialisation and overlap in a guild of coral reef cardinalfishes (Apogonidae)

Habitat specialisation and overlap in a guild of coral reef cardinalfishes (Apogonidae)

Perfil sanguíneo y análisis de la seroprevalencia de Leptospira interrogans en zorra gris (Urocyon cinereoargenteus) y coyote (Canis latrans) en dos zonas suburbanas de la ciudad de Querétaro

Habitat loss and landscape degradation: the disastrous outlook for vertebrate fauna in central western NSW

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