Autumn–winter diet of Grey Partridges<i>Perdix perdix</i>in winter crops, stubble fields and fallows

Orłowski, Grzegorz; Czarnecka, Joanna; Panek, Marek

doi:10.1080/00063657.2011.606498

Cited by 9 publications

(11 citation statements)

References 37 publications

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“…A further study exploring relationships between the digestibility of various dietary components would be especially advisable in order to assess the potential role of seed-eating and omnivorous birds in aiding the long-distance dispersal of plants. Dietary composition of the six major food categories expressed in four abundance classes (0-4); more details on dietary composition determined for all samples of Grey Partridges and some samples of Reed Buntings will be found elsewhere (Orłowski and Czarnecka 2007Orłowski et al 2011 …”

Section: Discussionmentioning

confidence: 99%

“…The droppings were then manually crushed in petri dishes containing water and examined at 940 magnification. Methods of diet analysis are described in Orłowski and Czarnecka (2007), Orłowski et al (2011) and Orłowski et al (2014). The proportion of all identifiable diet items was assessed and both intact (no traces of external damage) and damaged seeds (seed shell damaged, but seed not broken up) were counted.…”

Section: Sample Collection and Processingmentioning

confidence: 99%

“…19 g). All three species make up a considerable percentage of the autumn-winter community of avian granivores feeding on/using crop fields in Europe (Moorcroft et al 2002;Orłowski 2006;Kasprzykowski and Goławski 2012), and their diets consist primarily of seeds of various arable weeds (Cramp 1998;Holland et al 2006;Orłowski and Czarnecka 2007;Orłowski et al 2011Orłowski et al , 2014. Therefore, an assessment of the contribution to ecosystem services provided by these birds, in the context of weed seed predation/dispersal or the seasonal depletion of seed resources as a result of consumption (sensu Pinowski and Wójcik 1968;Robinson and Sutherland 2000;Marone et al 2000;Holmes and Froud-Williams 2005), is highly desirable.…”

Section: Introductionmentioning

confidence: 99%

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The effectiveness of endozoochory in three avian seed predators

et al. 2015

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The role of granivorous birds as agents of seed dispersal has been little explored and is poorly understood. We assessed the ability of three species of birds from a Central European agricultural landscape to disperse seeds of dry-fruited plants. We hypothesised that Grey Partridge Perdix perdix is a better seed disperser than either of two species of buntings-Yellowhammer Emberiza citrinella and Reed Bunting Emberiza schoeniclus-in terms of the number of intact seeds recovered from their droppings. Partridge droppings contained the highest number of intact seeds. Surprisingly, however, the number of intact seeds per 1 g of droppings was the highest in Reed Bunting, smaller in Grey Partridge and the smallest in Yellowhammer. Our findings suggest that the passage of intact seeds of dryfruited plants through the digestive tract of seed-eating birds is most likely an effect of limited digestion, resulting from the intake of a large volume of seeds, a small part of which remains undigested. This effect could be magnified by the inclusion in the diet of some items of different digestibility (invertebrates or leaves). We suggest that non-standard dispersal of seeds with no adaptations to endozoochory by birds is a far more frequent and as yet under-appreciated phenomenon, which has potential ecological implications for the colonisation of new habitats/islands by plants. The ultimate elucidation of this process is extremely difficult and would require large sets of faeces to be examined.

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Section: Discussionmentioning

confidence: 99%

Section: Sample Collection and Processingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The effectiveness of endozoochory in three avian seed predators

et al. 2015

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“…Grey Partridge is the only representative of sedentary native species of hunting Galliformes, which commonly inhabits semi-open landscapes of Ukraine except for serried forests of Polissia, the Carpathians and the Crimea, where the altitude exceeds 900 m (Fedyushko et al, 2011;Вro et al, 2012;Buner et al, 2005). The above-mentioned circumstances, including bioindicating meaning of species (Joannon et al, 2008;Orłowski et al, 2011;Panek, 1997aPanek, , 1997b, was the main reason to study influence of habitat and environmental factors on grey partridge life in modern Ukrainian steppes.…”

Section: Introductionmentioning

confidence: 99%

Habitat use of grey partridge in agricultural landscapes (the case of Ukrainian forest steppe)

2017

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We investigated the influence of habitat and climatic parameters on Grey partridge populations in natural and agricultural landscapes of Ukrainian forest steppe. In all the studied provinces, the general population trends of Grey partridge did not have the concerted correlation with climatic factors, though in Steppe left bank natural-agricultural province, LS-3 there was registered negative correlation between the number of birds and average rainfall in June; in Steppe Right bank naturalagricultural province, LS-2 we fixed positive correlation with average annual humidity. We also revealed the persistent negative relationship between the density of roads and partridge abundance in hunting lands of study area. We also founded that number of agriculture variables which limited the number of grey partridges, was higher, then in central and left-bank foreststeppe of Ukraine. Thus, we registered strong negative correlation between the square of sown lands and cultivated crop area (namely with corn, sunflower, and soy), dwelling space, norms of mineral fertilizers/pesticides and the number of birds. The same variables had low and medium positive correlation coefficients with bird abundance in western part of study regions. This could indirectly indicate the forced usage of arable land by birds as the reduction of mediocrity and natural mosaic of agricultural landscapes along the gradient from the west to the east of Ukrainian steppe. This should be considered in the hunting management of agricultural landscapes in study region, like identifying of the plots for the introduction of artificially reared birds, selection of reproductive areas and other ecological and economic measures for the protection and rational exploitation of grey partridge.

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“…Moreover, oilseed rape is an important food source for some birds. For example, its leaves are included in the autumn -winter diet of Grey Partridges Perdix perdix (Orłowski et al 2011) and constitute the most important winter food resource of Great Bustards Otis tarda in Central Europe, where this species is on the edge of extinction (Streich et al 2006). The increase in acreage of oilseed rape improved the availability of foliar food and the status of Woodpigeons Columba palumbus in Britain (Newton 2004).…”

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confidence: 99%