Rareza y Diversidad de Hormigas en Fragmentos de Bosque Seco Colombianos y sus Matrices<sup>1</sup>

Armbrecht, Inge; Ulloa-Chacón, Patricia

doi:10.1111/j.1744-7429.1999.tb00413.x

Cited by 26 publications

(20 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…This method is useful for estimating the composition and richness of the ant fauna that forage actively on the ground [39] and has been widely used in dry forests [30,31,34]. The baits, previously evaluated by Achury et al [33], consisted of a piece (4 × 4 cm) of white bond paper, on which was placed an average of 9 g (±1.7) of tuna fish conserved in oil.…”

Section: Sampling Of Antsmentioning

confidence: 99%

“…Moreover, the richest forests have a greater number of rare species [31], and the richness and relative frequency of some groups (e.g., legionary or army ants) are correlated positively with the area [32]. Although the actual composition of ant species varies significantly among sampling sites [33], the little fire ant (Wasmannia auropunctata R.) is numerically dominant; thus, it has been proposed as an indicator of low diversity in the dry forest [34].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effects of the Heterogeneity of the Landscape and the Abundance ofWasmannia auropunctataon Ground Ant Assemblages in a Colombian Tropical Dry Forest

Achury

Ulloa

Arcila

2012

Psyche: A Journal of Entomology

View full text Add to dashboard Cite

To evaluate the response of the ant assemblages to different management practices in the tropical dry forests of southwestern Colombia, 10 sites that conserve forest fragments surrounded by pastures and sugarcane crops were sampled. Tuna-fish baits placed on the ground in the three habitats captured 100 ant species (41 genera). The greatest number of species was found in the forests in contrast with a significant loss of richness and diversity in the productive habitats, the pastures being richer than the cane fields. Species richness was negatively correlated with the abundance of the little fire ant Wasmannia auropunctata. Ant species composition was related to soil temperature and percent ground cover, as well as being partially determined by location and the abundance of W. auropunctata. The forests had a significantly different species composition from the other two habitats, but there were no consistent differences between the pastures and the cane fields.

show abstract

Section: Sampling Of Antsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effects of the Heterogeneity of the Landscape and the Abundance ofWasmannia auropunctataon Ground Ant Assemblages in a Colombian Tropical Dry Forest

Achury

Ulloa

Arcila

2012

Psyche: A Journal of Entomology

View full text Add to dashboard Cite

show abstract

“…Los estudios sobre los efectos de la fragmentación en insectos, además de ser escasos, han presentado variabilidad en los resultados encontrados, ya que no necesariamente se ha observado una disminución en la diversidad con la fragmentación (Kattan 1998, Armbrecht & Ulloa-Chacón 1999, Pardo-Locarno et al 2000, Brown & Hutchings 1997. Armbrecht & Ulloa-Chacón (1999) no encontraron relación entre el área de los fragmentos y el número de especies en fragmentos de 6 ha a 15 ha de bosque seco de Colombia, mientras que Klein (1989) encontró una correlación entre índice se calculó utilizando la siguiente formula:…”

Section: Materials Y Métodosunclassified

Hormigas: relaciones especies-área en fragmentos de bosque seco tropical

Lozano-Zambrano¹,

Ulloa-Chacón²,

Armbrecht³

2009

Neotrop. entomol.

Self Cite

View full text Add to dashboard Cite

-We analyzed the effect of fragmentation on ant species-area and specimen frequencyarea relationships in nine patches of tropical dry forest in the middle Cauca river basin in Colombia. Species richness and specimen relative frequency of ants were positively correlated with area, whereas no signifi cant correlation was found between species richness and the degree of isolation calculated for the forest patches. As the fragmentation affects different functional groups in different ways, we analyzed the species-area relationship for separate functional groups of ants. According to the habitat requirements we found that the species richness increased faster as area increased for ants inhabiting decomposing wood, followed by ants associated with trees, while species richness of ants living under dead leaves did not correlate with area. According to the food preference, species richness was positively correlated with area for the army ant group, while no signifi cant correlation was found for solitary hunters or for leaf-cutting ants. Ant species richness and specimen density were calculated from equal size samples and examined in relation to the habitat area. An inverse correlation was found only for specimen density, the opposite of what was expected. To our knowledge this is one of the fi rst studies showing differential responses of functional groups of ants to habitat loss. Moreover, it emphasizes the conservation value of small forest fragments for ants in a tropical dry forest.KEY WORDS: Formicidae, fragmentation, isolation, species richness, functional group RESUMEN -Analizamos el efecto de la fragmentación sobre las relaciones especies-área y frecuencia relativa-área de hormigas en nueve fragmentos de bosque seco tropical en la cuenca media del río Cauca, Colombia. La riqueza y frecuencia relativa total de hormigas se correlacionó positivamente con el área más no con el grado de aislamiento. Como la fragmentación afecta diferencialmente grupos funcionales, se encontró que según el hábitat que ocupan son más afectadas en su orden las especies que viven en troncos en descomposición y la vegetación arbórea, mientras que las especies de hormigas asociadas a la hojarasca, no mostraron relación signifi cativa con el área. Según las preferencias en la obtención de alimento, las especies cazadoras en grupo, mostraron correlación con el área de los fragmentos, mientras que hormigas cazadoras solitarias y cultivadoras de hongos, no se correlacionaron signifi cativamente. En contraste a lo esperado, la densidad de individuos y especies de hormigas, basadas en muestras de igual tamaño, fueron relacionadas con el área, encontrando una relación no signifi cativa para la densidad de especies y una correlación inversa signifi cativa para la densidad de individuos. Según nuestro conocimiento, este es uno de los primeros estudios que muestra respuestas diferenciales de grupos funcionales de hormigas a la pérdida del área, además que se enfatiza el gran valor de los pequeños fragmentos para la conservación de la diver...

show abstract

“…There are increasing numbers of very thorough inventories of leaf litter ants (Belshaw and Bolton 1994, Fisher 1996, 1999a, b, 2000, Delabie et al 2000. Other studies involve sampling the whole community with a variety of methods, in the context of answering particular ecological questions, but they do not purport to be exhaustive inventories of a local ant fauna (e.g., Andersen and Majer 1991, Andersen 1992, Andersen and Reichel 1994, Armbrecht and Ulloa-Chacon 1999, Gadagkar et al 2000. Inventories involving both sustained effort and a variety of sampling methods, with the express purpose of capturing the entire fauna, are relatively rare.…”

Section: Introduction Asked By Visitors Is Always "How Many Species Dmentioning

confidence: 99%

The Ant Fauna of a Tropical Rain Forest: Estimating Species Richness Three Different Ways

Longino¹,

Coddington²,

Colwell³

2002

Ecology

147

177

View full text Add to dashboard Cite

Abstract. Species richness is an important characteristic of ecological communities, but it is difficult to quantify. We report here a thorough inventory of a tropical rain forest ant fauna and use it to evaluate species richness estimators. The study was carried out in ~ 1500 ha of lowland rain forest at La Selva Biological Station, Costa Rica. Diverse methods were used, including canopy fogging, Malaise traps, Berlese samples, Winkler samples, baiting, and manual search. Workers of 437 ant species were encountered. The abundance distribution was clearly lognormal, and the distribution emerged from a veil line with each doubling of sampling effort. Three richness estimates were calculated: the area under the fitted lognormal distribution, the asymptote of the Michaelis-Menten equation fit to the species accumulation curve, and the Incidence-based Coverage Estimator (ICE). The performance of the estimators was evaluated with sample-based rarefaction plots. The inventory was nearly complete because the species accumulation curve approached an asymptote, the richness estimates were very close to the observed species richness, and the uniques and duplicates curves were both declining. None of the richness estimators was stable in samplebased rarefaction plots, but regions of stability of estimators occurred. The explanation of rarity is one key to understanding why richness estimates fail. Fifty-one species (12% of the total) were still uniques (known from only one sample) at the end of the inventory. The rarity of 20 of these species was explained by "edge effects": "methodological edge species" (possibly abundant at the site but difficult to sample because of their microhabitat), and "geographic edge species," known to be common in habitats or regions outside of La Selva. Rarity of 31 species remained unexplained. Most of the 51 rare species were known from additional collections outside of La Selva, either in other parts of Costa Rica or in other countries. Only six species were "global uniques," known to date from only one sample on Earth. The study demonstrates that patterns of species occurrence early in an inventory may be inadequate to estimate species richness, but that relatively complete inventories of species-rich arthropod communities are possible if multiple sampling methods and extensive effort are applied.

show abstract

Rareza y Diversidad de Hormigas en Fragmentos de Bosque Seco Colombianos y sus Matrices¹

Cited by 26 publications

References 24 publications

Effects of the Heterogeneity of the Landscape and the Abundance ofWasmannia auropunctataon Ground Ant Assemblages in a Colombian Tropical Dry Forest

Effects of the Heterogeneity of the Landscape and the Abundance ofWasmannia auropunctataon Ground Ant Assemblages in a Colombian Tropical Dry Forest

Hormigas: relaciones especies-área en fragmentos de bosque seco tropical

The Ant Fauna of a Tropical Rain Forest: Estimating Species Richness Three Different Ways

Contact Info

Product

Resources

About

Rareza y Diversidad de Hormigas en Fragmentos de Bosque Seco Colombianos y sus Matrices1

Cited by 26 publications

References 24 publications

Effects of the Heterogeneity of the Landscape and the Abundance ofWasmannia auropunctataon Ground Ant Assemblages in a Colombian Tropical Dry Forest

Effects of the Heterogeneity of the Landscape and the Abundance ofWasmannia auropunctataon Ground Ant Assemblages in a Colombian Tropical Dry Forest

Hormigas: relaciones especies-área en fragmentos de bosque seco tropical

The Ant Fauna of a Tropical Rain Forest: Estimating Species Richness Three Different Ways

Contact Info

Product

Resources

About

Rareza y Diversidad de Hormigas en Fragmentos de Bosque Seco Colombianos y sus Matrices¹