Nest-dismantling behavior of yellow-bellied prinia in mainland and island populations

Wang, Longwu; Cheng, Shun-Jen; Hsu, Yu-Cheng; Liang, Wei

doi:10.1007/s10211-017-0281-4

“…Variation in eggs and nest morphology provide relevant information concerning bird life history that has frequently been used to answer ecological [10][11][12] and evolutionary questions [13][14][15] . Here we analyze examples that address the quantification nest wall openness and the aggregation of nest wall holes, using a nest of the blueblack grasssquit (Volatinia jacarina) deposited in the museum collection Coleção Ornitológica Marcelo Bagno, at Universidade de Brasília (register number COMB-N682).…”

Section: Use Casesmentioning

confidence: 99%

bwimage: A package to describe image patterns in natural structures

Biagolini-Jr.

¹

,

Macêdo

²

2020

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Currently R is the most popular software for data analyses among biologists. Here, we present bwimage, a package designed to describe patterns from black and white images. The package can be used for a wide range of applications. We implemented functions previously described in the literature to calculate parameters designed originally, but not exclusively, for vegetation structures. Additionally, we propose a new parameter: the aggregation index. We demonstrate applications for field work, providing examples that range from calculation of canopy openness, description of patterns in vertical vegetation structure, to patterns in bird nest structure. We provide advice and illustrated examples of how to produce high quality images for analyses.

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“…A photograph of the portion of standing vegetation against the white cloth was taken. Variation in eggs and nest morphology provide relevant information concerning bird life history that has frequently been used to answer ecological [10][11][12] and evolutionary questions [13][14][15] . Here we analyze examples that address the quantification nest wall openness and the aggregation of nest wall holes, using a nest of the blueblack grasssquit (Volatinia jacarina) deposited in the museum collection Coleção Ornitológica Marcelo Bagno, at Universidade de Brasília (register number COMB-N682).…”

Section: Use Casesmentioning

confidence: 99%

bwimage: A package to describe image patterns in natural structures

Biagolini-Jr.

¹

,

Macêdo

²

2019

View full text Add to dashboard Cite

Currently R is the most popular software for data analyses among biologists. Here, we present bwimage, a package designed to describe patterns from black and white images. The package can be used for a wide range of applications. We implemented functions previously described in the literature to calculate parameters designed originally, but not exclusively, for vegetation structures. Additionally, we propose a new parameter: the aggregation index. We demonstrate applications for field work, providing examples that range from calculation of canopy openness, description of patterns in vertical vegetation structure, to patterns in bird nest structure. We provide advice and illustrated examples of how to produce high quality images for analyses.

show abstract