Diversity and Habitat Use of Dung Beetles in a Restored Andean Landscape<sup>1</sup>

Medina, Claudia A.; Escobar, Federico; Kattan, Gustavo H.

doi:10.1111/j.1744-7429.2002.tb00255.x

Cited by 43 publications

(28 citation statements)

References 12 publications

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“…Most studies have demonstrated that dung beetles respond negatively to the fragmentation and transformation of natural habitats (HOWDEN & NEALIS 1975, KLEIN 1987, DAVIS et al 2001, MEDINA et al 2002. The results of the present study corroborate this to some extent, as most of the forest species are relatively less able to tolerate the microclimatic conditions typical of open areas (KLEIN 1987, HALFFTER et al 1992).…”

Section: Guildssupporting

confidence: 85%

Diversity and composition of dung beetle (Scarabaeinae) assemblages in a heterogeneous Andean landscape

Escobar¹

2004

Tropical Zoology

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In a montane region of Colombia, the diversity and composition of the dung beetle (Scarabaeinae) assemblages were sampled and analyzed in natural and anthropogenic habitats: primary forest, secondary forest, pasture and cropland. The total number of species per habitat was similar (between 10 species in cropland and 13 in secondary forest). Inventory completeness was over 90%, except for cropland where over 82% of the true species richness was recorded. Greater numbers of species and individuals were found in primary forest than in secondary forest and pasture. Fifty-five percent of all individuals were captured in cropland where the number of species was similar to that recorded for secondary forest. Species turnover was highest between primary forest and cropland (of 18 species, 4 were present in both). Primary and secondary forest had the lowest turnover of species (of 14, 11 species present in both). Guild distribution depended on habitat type: in primary and secondary forest, the most common species were nocturnal tunnelers, while in pasture and cropland, there were more diurnal species of various habits. These results support the idea that regeneration areas and certain land use systems can mitigate the detrimental effects that clearing the original vegetation has on biodiversity.

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Section: Guildssupporting

confidence: 85%

Diversity and composition of dung beetle (Scarabaeinae) assemblages in a heterogeneous Andean landscape

Escobar¹

2004

Tropical Zoology

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“…For example, deforestation along elevational gradients in the Columbian Andes during the first half of the twentieth century resulted in a significant decrease in insect diversity [50]. Furthermore, in the Sierra Nevada mountain range of California during the past century, animal populations occurring along altitudinal gradients have experienced range contraction owing to anthropogenic effects such as land clearing and climate change [51,52].…”

Section: Discussion (A) Processes That Generate Divergence and Threatmentioning

confidence: 99%

Intraspecific morphological and genetic variation of common species predicts ranges of threatened ones

Fuller

Thomassen

Peralvo³

et al. 2013

Proc. R. Soc. B.

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Predicting where threatened species occur is useful for making informed conservation decisions. However, because they are usually rare, surveying threatened species is often expensive and time intensive. Here, we show how regions where common species exhibit high genetic and morphological divergence among populations can be used to predict the occurrence of species of conservation concern. Intraspecific variation of common species of birds, bats and frogs from Ecuador were found to be a significantly better predictor for the occurrence of threatened species than suites of environmental variables or the occurrence of amphibians and birds. Fully 93 per cent of the threatened species analysed had their range adequately represented by the geographical distribution of the morphological and genetic variation found in seven common species. Both higher numbers of threatened species and greater genetic and morphological variation of common species occurred along elevation gradients. Higher levels of intraspecific divergence may be the result of disruptive selection and/or introgression along gradients. We suggest that collecting data on genetic and morphological variation in common species can be a cost effective tool for conservation planning, and that future biodiversity inventories include surveying genetic and morphological data of common species whenever feasible.

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“…In contrast to other insect groups such as leaf-litter arthropods and dung beetles that have recovered well at this site [32,33], restoration of bess beetles and other wood decomposing fauna is a process that requires many decades [10], as the presence of large fallen logs depends on forest age. Clearly 40 years is not sufficient to restore a full community of bess beetles in these forests.…”

Section: Implications For Conservationmentioning

confidence: 87%

An Evaluation of Bess Beetles (Passalidae) and Their Resource Base in a Restored Andean Forest

Kattan

Murcia²,

Galindo‐Cardona

2010

Tropical Conservation Science

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Degraded lands in the Colombian Andes have been restored by means of monospecific tree plantations of native and exotic species, and by abandoning lands to natural regeneration. Both methods rapidly produce a vegetation cover that helps to stabilize soils, but the value of resulting ecosystems for wildlife needs to be evaluated. We assessed the effects of these two restoration methods on the diversity and abundance of bess beetles (Passalidae), which are important deadwood recyclers. We quantified coarse woody debris (logs and branches >10 cm diameter) and associated passalid beetle fauna in 40-year-old Andean alder (Alnus acuminata) plantations, adjacent natural regeneration and old-forest remnants, at 2430 m of elevation in the Central Andes. The three forest types contained the same number of logs per unit area, but wood volume was lower in alder stands than in natural forest types. Old-forest remnants contained a higher number of occupied logs and individual beetles per transect and per unit wood volume than the two other habitats. We found six species of beetle, three of which were found in the three habitats and the other three in one habitat each. Forest remnants and natural regeneration had four species each, whereas alder plantations had three species. Although beetle abundance was lower in alder stands, in the small-scale mosaic found at this site alder plantations behaved similarly to secondary forest and merged as part of the local habitat heterogeneity. Whether these results apply to larger and more isolated plantations remains to be established.Keywords: alder, Alnus acuminata, Andes, Colombia, habitat restoration, xylophagous beetles. ResumenLas tierras degradadas en los Andes colombianos se han restaurado por medio de plantaciones monoespecíficas de árboles nativos y exóticos y por medio de regeneración natural. Ambos métodos producen rápidamente una cobertura boscosa que ayuda a estabilizar los suelos, pero el valor de estos ecosistemas para la vida silvestre debe ser evaluado. En este trabajo evaluamos los efectos de estos dos métodos de restauración sobre la diversidad y abundancia de escarabajos Passalidae, los cuales son importantes recicladores de madera muerta. Cuantificamos la madera caída (troncos y ramas de >10 cm de diámetro) y la fauna asociada de pasálidos en plantaciones de aliso (Alder acuminata) de 40 años de edad, bosques de regeneración natural adyacentes de la misma edad y remanentes de bosque maduro, a 2430 m de elevación en la cordillera Central. Los tres tipos de bosque tuvieron el mismo número de troncos por unidad de área, pero el volumen de madera fue más bajo en los alisales que en los bosques naturales. Los bosques maduros tuvieron un mayor número de troncos ocupados y de escarabajos por transecto y por unidad de volumen de madera que los otros dos hábitats. Encontramos seis especies de escarabajos, tres de las cuales se encontraron en los tres hábitats y las otras tres en un hábitat cada una. Tanto en los remanentes de bosque como en la regeneración natural enc...

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Diversity and Habitat Use of Dung Beetles in a Restored Andean Landscape¹

Cited by 43 publications

References 12 publications

Diversity and composition of dung beetle (Scarabaeinae) assemblages in a heterogeneous Andean landscape

Diversity and composition of dung beetle (Scarabaeinae) assemblages in a heterogeneous Andean landscape

Intraspecific morphological and genetic variation of common species predicts ranges of threatened ones

An Evaluation of Bess Beetles (Passalidae) and Their Resource Base in a Restored Andean Forest

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Diversity and Habitat Use of Dung Beetles in a Restored Andean Landscape1

Cited by 43 publications

References 12 publications

Diversity and composition of dung beetle (Scarabaeinae) assemblages in a heterogeneous Andean landscape

Diversity and composition of dung beetle (Scarabaeinae) assemblages in a heterogeneous Andean landscape

Intraspecific morphological and genetic variation of common species predicts ranges of threatened ones

An Evaluation of Bess Beetles (Passalidae) and Their Resource Base in a Restored Andean Forest

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Diversity and Habitat Use of Dung Beetles in a Restored Andean Landscape¹