scholarly journals Diet of land birds along an elevational gradient in Papua New Guinea

2017 ◽  
Vol 7 (1) ◽  
Author(s):  
Katerina Sam ◽  
Bonny Koane ◽  
Samuel Jeppy ◽  
Jana Sykorova ◽  
Vojtech Novotny
Keyword(s):  
Papua New Guinea ◽  
New Guinea ◽  
Elevational Gradient

Assemblages of fruit flies (Diptera: Tephritidae) along an elevational gradient in the rainforests of Papua New Guinea

2020 ◽  
Author(s):  
Sam Finnie ◽  
Katerina Sam ◽  
Maurice Leponce ◽  
Yves Basset ◽  
Dick Drew ◽  
...  
Keyword(s):  
Papua New Guinea ◽  
New Guinea ◽  
Elevational Gradient ◽  
Fruit Flies

scholarly journals Elevational gradient of Hemiptera (Heteroptera, Auchenorrhyncha) on a tropical mountain in Papua New Guinea

PeerJ ◽  
2015 ◽  
Vol 3 ◽  
pp. e978 ◽  
Author(s):  
Maxime Le Cesne ◽  
Stephen W. Wilson ◽  
Adeline Soulier-Perkins
Keyword(s):  
Papua New Guinea ◽  
New Guinea ◽  
Elevational Gradient ◽  
Tropical Mountain

scholarly journals Insect herbivory and herbivores of Ficus species along a rain forest elevational gradient in Papua New Guinea

Biotropica ◽  
2020 ◽  
Vol 52 (2) ◽  
pp. 263-276 ◽  
Author(s):  
Katerina Sam ◽  
Bonny Koane ◽  
Legi Sam ◽  
Anna Mrazova ◽  
Simon Segar ◽  
...  
Keyword(s):  
Papua New Guinea ◽  
Rain Forest ◽  
Insect Herbivory ◽  
New Guinea ◽  
Elevational Gradient

Resource use and food preferences in understory ant communities along a complete elevational gradient in Papua New Guinea

Biotropica ◽  
2018 ◽  
Vol 50 (4) ◽  
pp. 641-648 ◽  
Author(s):  
Jérôme Orivel ◽  
Petr Klimes ◽  
Vojtech Novotny ◽  
Maurice Leponce
Keyword(s):  
Papua New Guinea ◽  
Resource Use ◽  
Food Preferences ◽  
New Guinea ◽  
Elevational Gradient ◽  
Ant Communities

scholarly journals Biomass, abundances, and abundance and geographical range size relationship of birds along a rainforest elevational gradient in Papua New Guinea

PeerJ ◽  
2020 ◽  
Vol 8 ◽  
pp. e9727 ◽  
Author(s):  
Katerina Sam ◽  
Bonny Koane
Keyword(s):  
Papua New Guinea ◽  
Bird Species ◽  
New Guinea ◽  
Elevational Gradient ◽  
Passerine Bird ◽  
Range Size ◽  
Geographical Range ◽  
Feeding Guilds ◽  
Bird Assemblages ◽  
Bird Populations

The usually positive inter-specific relationship between geographical range size and the abundance of local bird populations comes with exceptions. On continents, the majority of these exceptions have been described from tropical montane areas in Africa, where geographically-restricted bird species are unusually abundant. We asked how the local abundances of passerine and non-passerine bird species along an elevational gradient on Mt. Wilhelm, Papua New Guinea relate to their geographical range size. We collected data on bird assemblages at eight elevations (200–3,700 m, at 500 m elevational increments). We used a standardized point-counts at 16 points at each elevational study site. We partitioned the birds into feeding guilds, and we obtained data on geographical range sizes from the Bird-Life International data zone. We observed a positive relationship between abundance and geographical range size in the lowlands. This trend changed to a negative one towards higher elevations. The total abundances of the assemblage showed a hump-shaped pattern along the elevational gradient, with passerine birds, namely passerine insectivores, driving the observed pattern. In contrast to abundances, the mean biomass of the bird assemblages decreased with increasing elevation. Our results show that montane bird species maintain dense populations which compensate for the decreased available area near the top of the mountain.

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