Geometrid Moth Species Richness, Distribution and Community Composition in Different Forest Types of Papua New Guinea

Author:

Paliau Jason12,Mani Alfred2,Napa Lui2,Uvau Cassey2,Sau Steven2,Kiapranis Robert3,Dargusch Paul4,Attorre Fabio5,Novotný Vojtěch26

Affiliation:

1. 1School of Environment and Climate Change, Papua New Guinea University of Natural Resources and Environment, East New Britain Province, Papua New Guinea

2. 2New Guinea Binatang Research Center (NGBRC), Madang Province, Papua New Guinea

3. 3Papua New Guinea Forest Research Institute (PNGFRI), Morobe Province, Papua New Guinea

4. 4School of Earth and Environmental Sciences, The University of Queensland, Brisbane, Queensland, Australia

5. 5Department of Environmental Biology, University of Rome “La Sapienza,” Rome, Italy

6. 6Institute of Entomology, Czech Academy of Sciences and Biological Faculty, University of South Bohemia, South Bohemia, Czech Republic

Abstract

As the major group of herbivorous insects, moths are highly significant in natural ecosystems. In collaboration with the Papua New Guinea (PNG) multipurpose National Forest Inventory (NFI) survey, this study investigates the species richness, distribution and community composition of Geometrid moths (Lepidoptera) in PNG’s tropical forests and analyses environmental drivers of the geometrid community structure. By providing a baseline assessment of an important order of insects that can serve as an indicator for broader biodiversity, this study informs how biodiversity assessments can be better integrated into the planning of forest conservation initiatives, particularly those related to REDD+ and forest carbon offset developments. The research was conducted over 3 years at 38 NFI clusters throughout six provinces: Eastern Highlands, Western Highlands, Morobe, Madang and West New Britain and Central Province. Moths were collected from dusk to before midnight (18:00 h to 22:00 h) using a manual light trapping method for four nights per site, with a total of 152 light trap samples. Results included a total of 11,830 specimens from 1,108 morphological species from lowland and montane forests in disturbed (degraded and/or logged) and primary forests. Elevation and forest disturbance are the main variables that influence the distribution of species. Species richness was low in montane undisturbed forests compared with lowland (disturbed and primary) forests and montane disturbed forests. Species similarity between light trap samples tends to decrease as elevation increases. Geometrid moth species were arranged into two main orders of community composition according to the forest types: montane (disturbed and/or primary) forests species and lowland (disturbed and/or primary forest) species as per the samples.

Publisher

University of California Press

Subject

General Environmental Science,Renewable Energy, Sustainability and the Environment,Education

Reference34 articles.

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2. Land use change and intensification in Papua New Guinea 1975–1996;Asia Pac Viewp,2001

3. Prehistoric human impact on rainforest biodiversity in highland New Guinea;Philos Trans R Soc B: Biol Sci,2007

4. From communities to continents: beta diversity of herbivorous insects;Annales Zoologici Fennici,2005

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