scholarly journals Peer Review #2 of "Biomass, abundances, and abundance and geographical range size relationship of birds along a rainforest elevational gradient in Papua New Guinea (v0.1)"

PeerJ ◽  
2020 ◽  
Vol 8 ◽  
pp. e9727 ◽  
Author(s):  
Katerina Sam ◽  
Bonny Koane

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.


2019 ◽  
Author(s):  
Katerina Sam ◽  
Bonny Koane

AbstractThe 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 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.


Author(s):  
Sam Finnie ◽  
Katerina Sam ◽  
Maurice Leponce ◽  
Yves Basset ◽  
Dick Drew ◽  
...  

2018 ◽  
Vol 43 (4) ◽  
pp. 345-357 ◽  
Author(s):  
Simon Herrmann

In the January 2018 issue of the IBMR, R. Daniel Shaw introduced the concept of hybridity to define how the Christian faith can connect meaningfully with people’s local rituals and practices. I researched how mature Lele Christians in Papua New Guinea evaluate their traditional concepts of sickness and healing. In this article I argue that hybridity provides a useful theoretical framework to understand how Lele Christians relate their Christian faith to their tradition. I also show that the concept finds good biblical precedent and is significantly moving forward the discussion about the relationship of Christianity and culture.


1996 ◽  
Vol 128 (2) ◽  
pp. 273-291 ◽  
Author(s):  
Norman F. Johnson

AbstractThe genus Paratelenomus Dodd is revised from a worldwide perspective. Three species are described as new: P. angor [Taiwan, Thailand], P. indivisus [Papua New Guinea, Australia], and P. matinalis [Vanuatu]. Paratelenomus bicolor (Dodd) [Australia], P. saccharalis (Dodd) [southern Europe, Africa, tropical Asia, Australia], P. ophiusa (Dodd) [Papua New Guinea, Australia], P. striativentris (Risbec) [Africa, India], and P. tetartus [Indonesia, Malaysia, Philippines] are redescribed. Aphanurus graeffei Kieffer, 1917 and Asolcus minor Watanabe, 1954 are junior synonyms of P. saccharalis (Dodd), 1913. An identification key to species is provided. The relationship of Paratelenomus within Telenominae is discussed; the hypothesized sister group is Nirupama Nixon.


2017 ◽  
Author(s):  
Natalie E Hofmann ◽  
Stephan Karl ◽  
Rahel Wampfler ◽  
Benson Kiniboro ◽  
Albina Teliki ◽  
...  

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