Fractal analysis for quantification of grazing paths of cows on homogeneous pastures

Tada, Shingo; Takahashi, Makoto; Ueda, Kôichiro; Nakatsuji, Hiroki; Kondo, Seiji

doi:10.1016/j.beproc.2012.10.016

Cited by 2 publications

(3 citation statements)

References 30 publications

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“…On the other hand, grazing animals may also use fractal patterns (space‐filling curves) to increase the total surface area they can graze on, so as to gain more food (Tada et al . 2013). Thus, the fractal index of the trail partly depends on the distribution and density of food (Plotnick 2007).…”

Section: Discussionmentioning

confidence: 99%

“…space‐filling curves) to increase the total surface area it could feed on, so as to maximize the food obtained from across a limited distribution (Tada et al . 2013) (with the surface area of Pararotadiscus quizhouensis the main limit on food availability). This ethological tendency of creating fractal space‐filling traces is especially commonly among molluscs with a muscular foot, including gastropods (Erlandsson & Kostylev 1995; Longo et al .…”

Section: Discussionmentioning

confidence: 99%

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Quantitative ichnology: a novel framework to determine the producers of locomotory trace fossils with the ichnogenus Gordia as a case study

Wang,

Rahman

2023

Palaeontology

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Trace fossils record the interactions between organisms and their surroundings, and can therefore provide unique insights into the coevolution of trace makers and the environment. However, identifying the producers of trace fossils is challenging because different animals can create very similar traces and many ichnotaxa can therefore only be attributed to broad morphological grades. For example, simple horizontal traces like Gordia are generally suggested to have been produced by vermiform organisms, potentially encompassing a range of animal phyla. This uncertainty makes it difficult to decipher their palaeobiological significance through major evolutionary events and episodes of environmental change. We have developed new mathematical approaches for identifying previously unrecognized signatures left by the trace makers of simple marine locomotory traces. We calculated the deviation angle series of self‐crossing traces made by extant isopods, polychaetes, gastropods and nematodes, computing the frequency spectrum and autocorrelation function in each case. The results reveal that each of these taxa left unique markers during the trace‐making process, reflecting differences in their anatomy and locomotory behaviour. We were able to identify the possible trace makers of several early Palaeozoic Gordia specimens, demonstrating that ichnospecies within the same ichnogenus can be created by distantly related animals with very different morphologies and/or behaviours. This novel mathematical framework has great potential for identifying the possible producers of diverse trace fossils through deep time, helping to uncover the earliest evidence of certain animals or behaviours. It also has great potential for quantifying ichnotaxonomy, consolidating the link between ichnology and palaeobiology.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Quantitative ichnology: a novel framework to determine the producers of locomotory trace fossils with the ichnogenus Gordia as a case study

Wang,

Rahman

2023

Palaeontology

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“…In addition, the FA was used in the analysis of pasture routes to clarify the behaviour and assess the impact of social factors on the example of cows of the Holstein breed. It has been found that using FA can quantify three aspects of the pasture routes of cows: the hierarchical scales, structure and their tortuosity in scale (Tada et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Origin and generation influence on the fractal dimension values of the milk production in dairy cows

Крамаренко¹,

Підпала²,

Lugovoy³

et al. 2022

TAVM

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The main aim of our research was to determine the effect of origin and generation on the fractal dimension values of the milk production peculiarities in dairy cows. This study analyses data from cattle milk production at the LLC "Promin", Mykolaiv region. We formed four experimental groups of first-calf Holstein heifers of different origins and generations. The animals of the first group were imported from Germany; the second group was their offspring; the third group was Ukrainian breed cows, and the fourth group was their offspring. We assessed 305-day milk yield, total milk yield, milk fat percentage, milk fat yield, milk protein percentage, milk protein yield and lactation length for each cow. The information fractal dimension (FD 1 ) values were calculated for each trait within each group. The fractal dimension values in all groups for 305-days milk yield, milk fat and milk protein yields were close to 1 (excluding the fourth group); thus, it can be argued that the random mechanism of their regulation and, accordingly, the lack of fractal properties. The estimated FD 1 values for total milk yield were slightly lower; they fluctuated within very narrow limits in all groups and did not depend on either origin or generation. In addition, the calculated FD 1 values for total milk yield were significantly lower than the corresponding estimates for 305day milk yield in all cow groups. The use of fractal analysis revealed significant differences, which are based on different regulation mechanisms of the milk fat percentage in cows of the daughter generations. On the other hand, the fractal dimension values FD 1 for milk protein percentage did not differ significantly between mothers and daughters, regardless of their origin. It was also found that the control for lactation length in the daughter generation was lower than the maternal one. Thus, using fractal analysis to study the regulatory mechanisms of milk production traits in dairy cows allowed us to determine the influence of the origin and generation (mother or daughter).

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Fractal analysis for quantification of grazing paths of cows on homogeneous pastures

Cited by 2 publications

References 30 publications

Quantitative ichnology: a novel framework to determine the producers of locomotory trace fossils with the ichnogenus Gordia as a case study

Quantitative ichnology: a novel framework to determine the producers of locomotory trace fossils with the ichnogenus Gordia as a case study

Origin and generation influence on the fractal dimension values of the milk production in dairy cows

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