The response of Grey Herons<i>Ardea cinerea</i>to changes in prey abundance

Jakubas, Dariusz; Manikowska, Brygida

doi:10.1080/00063657.2011.608423

Cited by 21 publications

(17 citation statements)

References 26 publications

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“…Morrison et al 1990;Watanuki et al 1993;Charrassin et al 1998;Jakubas and Manikowska 2011). Interpretation of changes in diet may differ between ecological groups.…”

Section: Introductionmentioning

confidence: 99%

Intra-seasonal variation in zooplankton availability, chick diet and breeding performance of a high Arctic planktivorous seabird

et al. 2016

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Different phenological responses to climate changes by species representing preys and predators may lead to mismatch between functionally dependent components of an ecosystem, with important effects on its structure and functioning. Here, we investigate withinseason variation in zooplankton availability, chick diet composition and breeding performance of a small planktivorous seabird, the little auk (Alle alle) in two large colonies in Hornsund and Magdalenefjorden, Spitsbergen, differing in synchrony of breeding (11-day vs. 22-day hatching period, respectively). Assuming similar zooplankton phenology and existing differences in duration of the little auk breeding period, we expected lower availability of the preferred food in the less synchronized colony in Magdalenefjorden and in consequence a negative effect on nestling body mass and survival. We found that in both colonies Calanus glacialis (copepodite stage CV) was the most important prey item in the chick diet making up 68-87 % of the biomass and energy of all prey items. The only exception was the end of the chick-rearing period in Magdalenefjorden, when contribution of this prey item was significantly lower (24-26 %). Thus, late breeders in Magdalenefjorden were apparently mismatched regarding C. glacialis CV availability. However, the hatching date did not affect birds fitness (reproductive output and chick pre-fledging mass) significantly. Results of our study indicate that little auks breeding on Spitsbergen can respond to a wide range of environmental conditions and prey availabilities through the plasticity of their foraging behaviour, which may help them to maintain their optimum fitness level in changing and unpredictable environments.

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“…Morrison et al 1990;Watanuki et al 1993;Charrassin et al 1998;Jakubas and Manikowska 2011). Interpretation of changes in diet may differ between ecological groups.…”

Section: Introductionmentioning

confidence: 99%

Intra-seasonal variation in zooplankton availability, chick diet and breeding performance of a high Arctic planktivorous seabird

et al. 2016

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“…Those results were expected because these habitats serve as important foraging areas for Grey Herons as well as other herons (Boisteau and Marion 2006;Kelly et al 2008;Jakubas and Manikowska 2011;Kazantzidis et al 2013). The studied species forages on freshwater prey (Owen 1960;Milstein et al 1970;Draulans et al 1987;Lekuona 2002;Jakubas and Mioduszewska 2005;Jakubas and Manikowska 2011), especially during the breeding season (Fasola et al 1993). All those factors have also been recognized as important determinants of Grey Heron colony location (Boisteau and Marion 2007).…”

Section: Discussionmentioning

confidence: 84%

“…Considering the food preferences of the Grey Heron, hydrographic network is an important landscape element which affects the location of breeding colonies (Boisteau and Marion 2006). However, given the variability of the Grey Heron diet (Cramp 1998;Jakubas and Mioduszewska 2005;Jakubas and Manikowska 2011), other habitats such as meadows/pastures may also serve as important feeding areas. It has been reported that the presence of very large rivers, waterways and floodplains or swamps/inland marshes within a 25 km radius around the colony determined the location and size of the Grey Heron colonies in France (Boisteau 2002).…”

Section: Introductionmentioning

confidence: 99%

“…Its diet consists mainly of fish but also of other prey, such as small mammals, amphibians, reptiles and aquatic insects (Milstein et al 1970;Draulans et al 1987;Jakubas and Mioduszewska 2005;Jakubas and Manikowska 2011). Considering the food preferences of the Grey Heron, hydrographic network is an important landscape element which affects the location of breeding colonies (Boisteau and Marion 2006).…”

Section: Introductionmentioning

confidence: 99%

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Determinants of the re‐occupation and size of Grey HeronArdea cinereabreeding colonies in northern Poland

Manikowska-Ślepowrońska

Lazarus

Żółkoś

et al. 2015

Ecological Research

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Birds select habitats on the basis of structural characteristics, food and nest-site availability or other features that affect survival and reproduction. This study investigates factors influencing colony re-occupation, the number of nests in 2013 and changes in the numbers of nest between 2004 and 2013 in re-occupied colonies of Grey Herons Ardea cinerea in northern Poland. The effects of following features around every colony were analysed: area of hydrographic and habitat features, habitat patchiness and microscale features. Among 28 colonies occupied in 2004, 43 % were re-occupied in 2013. Logistic regression models revealed that models with greater area of the sea coastline zone and lower area of the water body shoreline zone and also small number of pastures determined the best colony reoccupation. Only models with an area of water bodies and a number of pastures were significant, suggesting the important influence of other non-habitat factors on colony re-occupation. Ordinary least square (OLS) regression analysis revealed that in re-occupied colonies the number of nests in 2013 was higher in heronries with greater area of sea coastline zone, smaller number of forest patches and shorter distance to the nearest road. OLS regression analysis revealed that the number of nests increased between 2004 and 2013 in the colonies with greater areas covered by forests, greater number of water bodies, shorter distance to the rivers and longer distance to the sea. Our study revealed the importance of wetland habitat features to colony re-occupation, its size and changes in size.

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“…GHR may respond to changes in prey availability by switching to other available prey (e.g. Jakubas and Manikowska 2011 ). Their feeding techniques also differ: GCM mainly dives for fish, whereas GHR catches its prey by grabbing or stabbing, rarely by surface swimming or aerial plunging.…”

Section: Introductionmentioning

confidence: 99%

Inter-species and inter-colony differences in elemental concentrations in eggshells of sympatrically nesting great cormorants Phalacrocorax carbo and grey herons Ardea cinerea

Jakubas

Kitowski

Wiącek

et al. 2018

Environ Sci Pollut Res

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We compared the concentrations of 17 heavy metals and essential elements in post-hatching eggshells of two waterbirds, the obligate piscivorous great cormorant Phalacrocorax carbo (GCM) and the more omnivorous grey heron Ardea cinerea (GHR), breeding sympatrically in eight mixed colonies in Poland. We found significant inter-species and inter-colony differences in the levels of most of the elements. GHR had significantly higher concentrations of Al, which can be explained by its very low stomach pH: an acidic environment favours the release of Al compounds. Differences in Mn, Ni, Cu, Se and Hg concentrations can be attributed to the various contributions of fish and other aquatic organisms to the diet, and to the exploration of different habitats (GCM exclusively aquatic, GHR a wider range) and microhabitats (GCM, in contrast to wading GHR, dive for food, exploring the whole depth range of water bodies), differently exposed to contamination by those elements from sediments. Inter-colony differences were related to the level of industrialisation. We recorded higher levels of some elements in the eggshells (Fe, Mn in both species and Cr, Ni and Zn in GCM) collected in industrialised areas, which may be associated with the negative environmental impact of industrial areas.Electronic supplementary materialThe online version of this article (10.1007/s11356-018-3765-5) contains supplementary material, which is available to authorized users.

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The response of Grey HeronsArdea cinereato changes in prey abundance

Cited by 21 publications

References 26 publications

Intra-seasonal variation in zooplankton availability, chick diet and breeding performance of a high Arctic planktivorous seabird

Intra-seasonal variation in zooplankton availability, chick diet and breeding performance of a high Arctic planktivorous seabird

Determinants of the re‐occupation and size of Grey HeronArdea cinereabreeding colonies in northern Poland

Inter-species and inter-colony differences in elemental concentrations in eggshells of sympatrically nesting great cormorants Phalacrocorax carbo and grey herons Ardea cinerea

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