The variability of territorial behavior of Sylvia warblers depending on the habitats structure of  and population density

Matantseva, M. V.; Simonov, Sergey; Lapshin, N. V.

doi:10.15393/j1.art.2017.7002

Cited by 3 publications

(2 citation statements)

References 6 publications

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“…In a manner of speaking, 3D territories in dense populations are arranged like layers of roof tiles, avoiding substantial overlaps. These results are consistent with the data fromCooper et al (2014) and earlier conclusions that the distribution of territorial spaces by height can occur in warblers when their 2D territories seem signi cantly overlapped(Matantseva and Simonov 2008;Matantseva et al 2017). Thus, even a strictly territorial species such as the Willow Warbler can, in certain circumstances (viz.…”

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confidence: 92%

“…Examples of such early studies were those by Zubtsovsky and Matantsev (1992), whose registration of advertised territories included the height at which the bird was in each recorded point. These studies, as well as their extensions (Zubtsovsky et al 2006;Matantseva and Simonov 2008;Matantseva et al 2017) have demonstrated that, as opposed to the perception of territories as planar objects, 3D mapping of territorial spaces can contribute signi cantly to our knowledge of the matter, since the patterns of individuals' distribution in the habitat space can be a weighty factor shaping the bird settlement structure. Such research, however, was hindered by the lack of specialised techniques for collecting, processing, and representing data on 3D territories of birds.…”

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confidence: 99%

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2D and 3D territories and territory overlap of Willow Warblers Phylloscopus trochilus in Arctic forests

Matantseva

Simonov

2023

Preprint

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Space use by animals is usually considered in two horizontal dimensions, less often with a separate analysis of the vertical stratification. Only recently, studies on three-dimensional (3D) space use appeared with modelling of individual movements simultaneously in three dimensions. In ornithology, such works were done when studying home ranges of large birds tagged with radio transmitters and GPS locators or during visual observations of colour-banded passerine wintering birds and residents in tropics. To our knowledge, such methods have not been used for studying 3D territories advertised by singing in passerines during the breeding period in the Palearctic Region. We studied the 3D territoriality of Willow Warblers Phylloscopus trochilus during the breeding period in the Kola Peninsula, Arctic Region, NW Russia. Using the method of Cooper et al. (2014), we located points with 3D coordinates at which individually marked males sang and analysed 2D and 3D territories and their overlap in R. We found that 2D methods, compared to 3D methods, overestimated individual spatial overlap by 8.5% and total spatial overlap by 16.7%. Thus, Willow Warblers in Arctic forests can partition their territorial space in 3 dimensions. With the overlap indices adopted for use with 3D data, we also proved that they could avoid areas of overlap. Furthermore, it was demonstrated for the first time that the overestimation of the territory overlaps by 2D versus 3D methods grew higher as the number of neighbour territories increased. In dense populations, 3D territories are arranged like layers of roof tiles, avoiding substantial overlaps.

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confidence: 92%

Section: Introductionmentioning

confidence: 99%

2D and 3D territories and territory overlap of Willow Warblers Phylloscopus trochilus in Arctic forests

Matantseva

Simonov

2023

Preprint

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Two- and three-dimensional territories and territory overlap of Willow Warblers Phylloscopus trochilus in Arctic forests

Matantseva

Simonov

2023

Polar Biol

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Methods for Studying Songbird Territories

Matantseva

2023

Zoologičeskij žurnal

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A brief historical review is presented of the development of approaches to the study of the territorial space of songbirds (Oscines), using both older and modern research methods. The study of bird territoriality lasts more than a century, but there are still not only little-known aspects that remain in this direction, but also no consensus on terminology and methods. The description of the territorial space plays leading roles in such works. In turn, the classic objects of such research are songbirds demonstrating their territories by singing and defending them from invasion by other individuals. There have been many definitions of the term “territory” proposed, which reflect different concepts of territoriality. The most common definition of a territory thereby is a defended (conceptually) and demonstrated (operationally) space. As a rule, this space is a certain area, a projection of the real territory to the surface on the ground. In recent decades, however, publications have appeared on the topic of exploring territories as three-dimensional (3D) structures. The most effective method of field registration of territories remains the territory mapping method based on visual observations of tagged individuals, which has also been adapted for 3D-territories. Alternative approaches to the registration of territories, including radio telemetry, have significant limitations. In terms of quantitative data-processing methods, there has been a shift over the past decades from an analysis of territories as polygons to their analysis as kernel isopleths. This approach allows for not only the territory contours to be understood, but also the frequency of the use of different points within its limits to be assessed. A significant achievement in the recent years is the adaptation of the kernel methods to three-dimensional structures. It can be said that there is a need to study the territoriality of birds in a 3D-environment. Such research seems very promising because it can provide fundamentally new information on such things as habitat selection and space use, the formation of the spatial and ethological structure of settlements, the separation of territories under high population densities and limited resources, and both intra- and interspecific competition.

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The variability of territorial behavior of Sylvia warblers depending on the habitats structure of and population density

Cited by 3 publications

References 6 publications

2D and 3D territories and territory overlap of Willow Warblers Phylloscopus trochilus in Arctic forests

2D and 3D territories and territory overlap of Willow Warblers Phylloscopus trochilus in Arctic forests

Two- and three-dimensional territories and territory overlap of Willow Warblers Phylloscopus trochilus in Arctic forests

Methods for Studying Songbird Territories

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