Selection of human-influenced and natural wetlands by Great Egrets at multiple scales in the southeastern USA

Fidorra, Jason C.; Frederick, Peter C.; Evers, David C.; Meyer, Kenneth D.

doi:10.1650/condor-14-117.1

Cited by 15 publications

(12 citation statements)

References 44 publications

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“…The preference of the little egret for commercial fishponds in the inner Deep Bay agrees with other studies on ardeids ( Fidorra et al, 2016 ). The preference of commercial fishponds is probably associated with the draining practices that enhance food availability and accessibility ( Fidorra et al, 2016 ; Rocha et al, 2017 ). In our study area, the fishponds are drained for fish harvesting, between October and May ( Fig.…”

Section: Discussionsupporting

confidence: 91%

“…Such conversion is typically considered detrimental to biodiversity, since many waterbirds rely on natural wetlands as foraging and breeding grounds ( Bellio, Kingsford & Kotagama, 2009 ; Ma et al, 2004 ; Sebastián-González & Green, 2016 ). However, some studies have found that human-influenced wetlands could provide alternative, complementary habitats for some species ( Fidorra et al, 2016 ; Giosa, Mammides & Zotos, 2018 ; Kloskowski et al, 2009 ; Li et al, 2013 ; Márquez-Ferrando et al, 2014 ). In some cases, the transformation from natural to human-influenced wetlands has increased bird diversity due to enhanced habitat heterogeneity ( Murillo-Pacheco et al, 2018 ).…”

Section: Introductionmentioning

confidence: 99%

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Spatial ecology of little egret (Egretta garzetta) in Hong Kong uncovers preference for commercial fishponds

Pang

Sung²,

Chung³

et al. 2020

PeerJ

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Many natural wetlands have been converted to human-influenced wetlands. In some instances, human-influenced wetlands could provide complementary habitats for waterbirds, compensating for the loss of natural wetlands. Inner Deep Bay in Hong Kong is composed of both natural and human-influenced wetlands and is under immense development pressure. From an ecology perspective, we need to understand if different wetland types play the same ecological role. To achieve this, we tracked nine little egrets (Egretta garzetta) using GPS loggers for 14 months to study their spatial ecology, home range, movement and habitat use. We found that over 88% of the home range of all individuals comprised of wetlands (commercial fishponds, mangrove, gei wai, channel, and intertidal mudflat). Among these wetland types, nearly all (seven of nine) individuals preferred commercial fishponds over other habitats in all seasons. Little egrets exhibited seasonal movement and habitat use among seasons, with largest home range, greatest movement, and most frequent visits to commercial fishponds in winter compared to spring and autumn. Our results highlight the significant role of commercial fishponds, providing a feeding ground for little egrets. However, other wetland types cannot be ignored, as they were also used considerably. These findings underscore the importance of maintaining a diversity of wetland types as alternative foraging and breeding habitats.

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Section: Discussionsupporting

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Spatial ecology of little egret (Egretta garzetta) in Hong Kong uncovers preference for commercial fishponds

Pang

Sung²,

Chung³

et al. 2020

PeerJ

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“…Forested habitats along with such areas provide a wide array of foraging grounds and nesting sites for wetland-dependent bird species. For example, several water birds such as herons, ibises and storks, show strong preferences for wetlands relative to paddy fields as foraging and breeding habitats, particularly when conditions such as water depth and prey availability are favourable (Fidorra et al 2016). Generally, population dynamics and foraging behaviour of a colonial nesting species like LA show strong relationships with the quality of natural wetland habitats (Frederick et al 2009, Sundar et al 2016, as well as its changes during the nesting seasons (Karki & Thapa 2013).…”

Section: Introductionmentioning

confidence: 99%

Nesting habitat selection and challenges of conservation of the vulnerable Lesser Adjutant Leptoptilos javanicus (Horsfield, 1821) in the Chitwan National Park, Nepal

Bhattarai

Adhikari

Rijal³

2021

Ornis Hungarica

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The nesting ecology and conservation threats of the Lesser Adjutant (Leptoptilos javanicus) were studied in the Chitwan National Park, Nepal. We located nine nesting colonies during the nesting season. The number of nests was highly positively correlated with tree height, diameter at breast height and canopy cover. The uppermost canopy of the trees was the most preferred nesting place. Storks preferred to nest in compact colonies on large, widely branched trees with thin foliage cover, such as Bombax ceiba, and also nearby the foraging grounds such as wetlands and grasslands. Storks mostly preferred to nest in Bombax ceiba, but if this tree was not available, they nested in other trees, such as Shorea robusta, Ficus racemosa and Terminalia alata. During the breeding season, 180 adults, 76 nests and 88 chicks were recorded, where the highest number of chicks was recorded near the Sauraha area of the Chitwan National Park. Most of the colonies were far from human settlements, which suggest that human disturbance could be the major determinant of nesting habitat selection in this area. The wetlands nearby human settlements are either overexploited in terms of mass collection of the storks` prey species by people or disturbed highly due to presence of a large number of people. These empirical findings suggest that conservation of Lesser Adjutant mainly rely on the protection of mature Bombax ceiba trees and the reduction of human disturbance and of the collection of stork prey animals from foraging areas.

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“…When crop fields occur in combination with other habitats, including humanmodified and natural wetlands, mechanisms that facilitate persistence of waterbird populations can be complex. For example, several waterbird species, including herons, ibises and storks, show strong preferences for wetlands relative to rice fields as foraging and breeding habitats, particularly when conditions such as water depth and prey availability are favorable (Tourenq et al 2001;Sundar 2006;Fidorra et al 2015).…”

mentioning

confidence: 99%

Factors Affecting Provisioning Times of Two Stork Species in Lowland Nepal

Sundar

Maharjan²,

Koju³

et al. 2016

Waterbirds

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Selection of human-influenced and natural wetlands by Great Egrets at multiple scales in the southeastern USA

Cited by 15 publications

References 44 publications

Spatial ecology of little egret (Egretta garzetta) in Hong Kong uncovers preference for commercial fishponds

Spatial ecology of little egret (Egretta garzetta) in Hong Kong uncovers preference for commercial fishponds

Nesting habitat selection and challenges of conservation of the vulnerable Lesser Adjutant Leptoptilos javanicus (Horsfield, 1821) in the Chitwan National Park, Nepal

Factors Affecting Provisioning Times of Two Stork Species in Lowland Nepal

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