Study

Bat diversity in montane rainforest and shaded coffee under different management regimes in southeastern Chiapas, Mexico

  • Published source details Estrada C.G., Damon A., Hernández C.S., Pinto L.S. & Núñez G.I. (2006) Bat diversity in montane rainforest and shaded coffee under different management regimes in southeastern Chiapas, Mexico. Biological Conservation, 132, 351-361

Actions

This study is summarised as evidence for the following.

Action Category

Reduce pesticide, herbicide or fertiliser use

Action Link
Bat Conservation

Retain or plant native trees and shrubs amongst crops (agroforestry)

Action Link
Bat Conservation
  1. Reduce pesticide, herbicide or fertiliser use

    A site comparison study in 2004–2005 in five agroforestry plantations and one montane rainforest in southeastern Chiapas, Mexico (Estrada et al 2006) found that coffee agroforestry plantations using few or no chemicals had a higher diversity of insect-eating bat species than coffee agroforestry plantations with high chemical inputs, but the diversity of fruit and nectar-eating bat species did not differ. A higher diversity of insect-eating bat species was captured in plantations with low chemical use than in plantations with high chemical inputs (data reported as diversity index). The number of fruit and nectar-eating bat species was similar in plantations with low and high chemical use. More bat species were recorded in native rainforest (37 species) than in any of the five coffee agroforestry plantations (23–26 species). One site of native rainforest was sampled, and five sites on coffee agroforestry plantations with different amounts of chemical use (either none, organic compost, or different combinations of Thiodan, herbicide and fertilizer). Plantations with the highest chemical input used all three chemical types. At each of six sites, bats were captured with six mist nets placed along a 150 m transect for 6 h from sunset on two nights. Surveys were repeated every 50 days from March 2004 to June 2005.

  2. Retain or plant native trees and shrubs amongst crops (agroforestry)

    A site comparison study in 2004–2005 in five agroforestry plantations and one montane rainforest in southeastern Chiapas, Mexico (Estrada et al. 2006) found that coffee agroforestry plantations with different amounts and types of shade cover had a similar number of bat species. The number of bat species captured (23–26) did not differ significantly between five coffee agroforestry plantations with different amounts and types of shade cover. However, the number of bat species captured across all sites was found to be positively correlated with the number of vegetation layers, and the height and cover of trees (data reported as statistical model results). More bat species were recorded in native rainforest (37 species) than in any of the five coffee agroforestry plantations. One native rainforest site was sampled, and five coffee agroforestry plantations with different heights (6–25 m), layers (2–3 strata), types (native rainforest trees, shimbillo Inga spp. or banana Musa spp.) and amounts (40–90%) of shade cover. Management intensity (pruning, weeding, and use of chemicals) also varied between sites. At each of six sites, bats were captured with six mist nets placed along a 150 m transect for 6 h from sunset on two nights. Surveys were repeated every 50 days from March 2004 to June 2005.

Output references

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