Patterns of Insect Abundance and Distribution in Urban Domestic Gardens in Bangalore, India

Domestic gardens may play a vital role in supporting urban insect biodiversity, despite their small size. This paper assesses the abundance, diversity and distribution of insects in urban domestic gardens in the tropics, through a study in the rapidly expanding Indian city of Bangalore. Fifty domest...

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Main Authors: Madhumitha Jaganmohan, Lionel Sujay Vailshery, Harini Nagendra
Format: Article
Language:English
Published: MDPI AG 2013-10-01
Series:Diversity
Subjects:
Online Access:http://www.mdpi.com/1424-2818/5/4/767
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author Madhumitha Jaganmohan
Lionel Sujay Vailshery
Harini Nagendra
author_facet Madhumitha Jaganmohan
Lionel Sujay Vailshery
Harini Nagendra
author_sort Madhumitha Jaganmohan
collection DOAJ
description Domestic gardens may play a vital role in supporting urban insect biodiversity, despite their small size. This paper assesses the abundance, diversity and distribution of insects in urban domestic gardens in the tropics, through a study in the rapidly expanding Indian city of Bangalore. Fifty domestic gardens were studied using a combination of light traps and pitfall traps. We recorded a large number of insects, 2,185 insects from 10 orders, of which ants, bugs, beetles and flies were the most common. We found 25 species of trees (from 160 individuals) and 117 species of herbs and shrubs in the 50 sampled domestic gardens. The number of insect orders encountered was significantly related to the number of tree and herb/shrub species. Garden management practices also influenced the abundance and richness of insect orders. Thus, greater numbers of insects were observed in gardens with a greater proportion of bare soil relative to grass area and with less intensive weeding practices. More insect orders were encountered in gardens with a composting pit. Insect numbers were significantly reduced in gardens subjected to pesticide application. Most residents avoided application of pesticides and herbicides, citing health concerns.
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spelling doaj.art-9dadab43820046e4b75dda96f29101212022-12-22T02:57:15ZengMDPI AGDiversity1424-28182013-10-015476777810.3390/d5040767Patterns of Insect Abundance and Distribution in Urban Domestic Gardens in Bangalore, IndiaMadhumitha JaganmohanLionel Sujay VailsheryHarini NagendraDomestic gardens may play a vital role in supporting urban insect biodiversity, despite their small size. This paper assesses the abundance, diversity and distribution of insects in urban domestic gardens in the tropics, through a study in the rapidly expanding Indian city of Bangalore. Fifty domestic gardens were studied using a combination of light traps and pitfall traps. We recorded a large number of insects, 2,185 insects from 10 orders, of which ants, bugs, beetles and flies were the most common. We found 25 species of trees (from 160 individuals) and 117 species of herbs and shrubs in the 50 sampled domestic gardens. The number of insect orders encountered was significantly related to the number of tree and herb/shrub species. Garden management practices also influenced the abundance and richness of insect orders. Thus, greater numbers of insects were observed in gardens with a greater proportion of bare soil relative to grass area and with less intensive weeding practices. More insect orders were encountered in gardens with a composting pit. Insect numbers were significantly reduced in gardens subjected to pesticide application. Most residents avoided application of pesticides and herbicides, citing health concerns.http://www.mdpi.com/1424-2818/5/4/767citiesbiodiversity conservationdomestic gardensgardening practicestropicsurbanization
spellingShingle Madhumitha Jaganmohan
Lionel Sujay Vailshery
Harini Nagendra
Patterns of Insect Abundance and Distribution in Urban Domestic Gardens in Bangalore, India
Diversity
cities
biodiversity conservation
domestic gardens
gardening practices
tropics
urbanization
title Patterns of Insect Abundance and Distribution in Urban Domestic Gardens in Bangalore, India
title_full Patterns of Insect Abundance and Distribution in Urban Domestic Gardens in Bangalore, India
title_fullStr Patterns of Insect Abundance and Distribution in Urban Domestic Gardens in Bangalore, India
title_full_unstemmed Patterns of Insect Abundance and Distribution in Urban Domestic Gardens in Bangalore, India
title_short Patterns of Insect Abundance and Distribution in Urban Domestic Gardens in Bangalore, India
title_sort patterns of insect abundance and distribution in urban domestic gardens in bangalore india
topic cities
biodiversity conservation
domestic gardens
gardening practices
tropics
urbanization
url http://www.mdpi.com/1424-2818/5/4/767
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