Spatial Distribution of Acromyrmex balzani (Emery) (Hymenoptera: Formicidae: Attini) Nests Using Two Sampling Methods

<p>The spatial distribution (SD) of organisms is a key parameter in studies of population ecology. Among the methods to describe the SD of sessile organisms, sampling by way of plots and transects are widely used. The measurement of the distance between individuals (“nearest neighbor”) is a si...

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Autores principales: Leandro Sousa-Souto, Arleu Barbosa Viana Junior, Eduardo Silva Nascimento
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Publicado: Universidade Estadual de Feira de Santana 2013
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spelling oai:doaj.org-article:cd82a184559d4072980adb965ec7471f2021-12-02T12:39:32ZSpatial Distribution of Acromyrmex balzani (Emery) (Hymenoptera: Formicidae: Attini) Nests Using Two Sampling Methods0361-652510.13102/sociobiology.v60i2.162-168https://doaj.org/article/cd82a184559d4072980adb965ec7471f2013-07-01T00:00:00Zhttp://periodicos.uefs.br/ojs/index.php/sociobiology/article/view/141https://doaj.org/toc/0361-6525<p>The spatial distribution (SD) of organisms is a key parameter in studies of population ecology. Among the methods to describe the SD of sessile organisms, sampling by way of plots and transects are widely used. The measurement of the distance between individuals (“nearest neighbor”) is a simple method that has not been employed in population studies with ants.  This study aimed to evaluate the SD of ant mounds of <em>Acromyrmex balzani</em> (Emery, 1890), using both plot sampling and nearest neighbor methods in order to evaluate which method is more appropriate for determining SD of this species. In January 2013 we established 359 plots of 10 m<sup>2</sup> on a fragment of grassland in Sergipe, Brazil. In the same study area 25 colonies were randomly selected and the distance of the closest neighbor colony was determined. In total, 153 ant mounds were sampled (plots) and the density was estimated in 975 × colonies ha<sup>-1</sup>. Colonies were clumped in the environment either by plot sampling (χ2 = 453.93; <em>p </em>&lt; 0.05) as well as by the method of nearest neighbor (A<sub>x</sub>= 0.67, t = -1.72, p &lt; 0.05). The aggregation of A. balzani colonies found in this study may be due to habitat heterogeneity or relate to the strategy of colony foundation. We conclude that the use of the nearest neighbor method was as accurate as the plot sampling method, providing the same results with much lower sampling effort.</p>Leandro Sousa-SoutoArleu Barbosa Viana JuniorEduardo Silva NascimentoUniversidade Estadual de Feira de Santanaarticlepopulation ecologyleaf-cutting antsnest densitynearest neighborZoologyQL1-991EcologyQH540-549.5Natural history (General)QH1-278.5ENSociobiology, Vol 60, Iss 2, Pp 162-168 (2013)
institution DOAJ
collection DOAJ
language EN
topic population ecology
leaf-cutting ants
nest density
nearest neighbor
Zoology
QL1-991
Ecology
QH540-549.5
Natural history (General)
QH1-278.5
spellingShingle population ecology
leaf-cutting ants
nest density
nearest neighbor
Zoology
QL1-991
Ecology
QH540-549.5
Natural history (General)
QH1-278.5
Leandro Sousa-Souto
Arleu Barbosa Viana Junior
Eduardo Silva Nascimento
Spatial Distribution of Acromyrmex balzani (Emery) (Hymenoptera: Formicidae: Attini) Nests Using Two Sampling Methods
description <p>The spatial distribution (SD) of organisms is a key parameter in studies of population ecology. Among the methods to describe the SD of sessile organisms, sampling by way of plots and transects are widely used. The measurement of the distance between individuals (“nearest neighbor”) is a simple method that has not been employed in population studies with ants.  This study aimed to evaluate the SD of ant mounds of <em>Acromyrmex balzani</em> (Emery, 1890), using both plot sampling and nearest neighbor methods in order to evaluate which method is more appropriate for determining SD of this species. In January 2013 we established 359 plots of 10 m<sup>2</sup> on a fragment of grassland in Sergipe, Brazil. In the same study area 25 colonies were randomly selected and the distance of the closest neighbor colony was determined. In total, 153 ant mounds were sampled (plots) and the density was estimated in 975 × colonies ha<sup>-1</sup>. Colonies were clumped in the environment either by plot sampling (χ2 = 453.93; <em>p </em>&lt; 0.05) as well as by the method of nearest neighbor (A<sub>x</sub>= 0.67, t = -1.72, p &lt; 0.05). The aggregation of A. balzani colonies found in this study may be due to habitat heterogeneity or relate to the strategy of colony foundation. We conclude that the use of the nearest neighbor method was as accurate as the plot sampling method, providing the same results with much lower sampling effort.</p>
format article
author Leandro Sousa-Souto
Arleu Barbosa Viana Junior
Eduardo Silva Nascimento
author_facet Leandro Sousa-Souto
Arleu Barbosa Viana Junior
Eduardo Silva Nascimento
author_sort Leandro Sousa-Souto
title Spatial Distribution of Acromyrmex balzani (Emery) (Hymenoptera: Formicidae: Attini) Nests Using Two Sampling Methods
title_short Spatial Distribution of Acromyrmex balzani (Emery) (Hymenoptera: Formicidae: Attini) Nests Using Two Sampling Methods
title_full Spatial Distribution of Acromyrmex balzani (Emery) (Hymenoptera: Formicidae: Attini) Nests Using Two Sampling Methods
title_fullStr Spatial Distribution of Acromyrmex balzani (Emery) (Hymenoptera: Formicidae: Attini) Nests Using Two Sampling Methods
title_full_unstemmed Spatial Distribution of Acromyrmex balzani (Emery) (Hymenoptera: Formicidae: Attini) Nests Using Two Sampling Methods
title_sort spatial distribution of acromyrmex balzani (emery) (hymenoptera: formicidae: attini) nests using two sampling methods
publisher Universidade Estadual de Feira de Santana
publishDate 2013
url https://doaj.org/article/cd82a184559d4072980adb965ec7471f
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