scholarly journals Do sub-groups of butterflies display different elevational distribution patterns in the Eastern Himalaya, India?

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Sailendra Dewan ◽  
Bhoj Kumar Acharya ◽  
Ole R. Vetaas ◽  
Sudeep Ghatani
2019 ◽  
Author(s):  
Deng Wei ◽  
Wang Jia-Liang ◽  
Matt Scott ◽  
Fang Yi-Hao ◽  
Liu Shuo-Ran ◽  
...  

Abstract Background Modelling species richness across an elevation gradient has long attracted attention, and at same time places some significant obstacles to research. Many interpretations of patterns and corresponding mechanisms for species distributions are made without consideration of multiple confounding factors. What are factors that affect species richness with elevation? The answer may contribute to better understanding of the elevational distribution patterns and mechanisms.In this study, we performed the research on species richness of nematode-trapping fungi (NTF) across an elevation gradient in Yunnan, China.Results The results showed that sampling patterns, sampling altitude range, and human disturbance in sampling site could affect the resulting patterns of species richness significantly.Conclusion The results suggested that future studies on the elevational gradients of species richness should address these factors, and try to adopt the high-sampling patterns to reduce the observation bias.


2016 ◽  
Vol 38 (3) ◽  
pp. 183-194 ◽  
Author(s):  
Débora S. G. Henriques ◽  
Paulo A. V. Borges ◽  
Claudine Ah-Peng ◽  
Rosalina Gabriel

2020 ◽  
Vol 13 (2) ◽  
pp. 112-121
Author(s):  
Sudiyar . ◽  
Okto Supratman ◽  
Indra Ambalika Syari

The destructive fishing feared will give a negative impact on the survival of this organism. This study aims to analyze the density of bivalves, distribution patterns, and to analyze the relationship of bivalves with environmental parameters in Tanjung Pura village. This research was conducted in March 2019. The systematic random system method was used for collecting data of bivalves. The collecting Data retrieval divided into five research stasions. The results obtained 6 types of bivalves from 3 families and the total is 115 individuals. The highest bivalve density is 4.56 ind / m², and the lowest bivalves are located at station 2,1.56 ind / m²,  The pattern of bivalve distribution in the Coastal of Tanjung Pura Village is grouping. The results of principal component analysis (PCA) showed that Anadara granosa species was positively correlated with TSS r = 0.890, Dosinia contusa, Anomalocardia squamosa, Mererix meretrix, Placamen isabellina, and Tellinella spengleri were positively correlated with currents r = 0.933.


2019 ◽  
Vol 1 (02) ◽  
pp. 64-67
Author(s):  
Meilisha Putri Pertiwi ◽  
Suci Siti Lathifah

Research on the condition of the nesting habitat of Chelonia mydas (green turtle) in Pangumbahan Beach, Ujung Genteng, South Sukabumi has been carried out. Data retrieval is done 6 times for 2 days, 27-28 November 2017 at 3 observation stations. The abiotic parameters measured include surface temperature and depth of 50 cm, surface humidity and depth of 50 cm, beach width, beach slope, and the size of sand grains. While the biotic parameters measured were density, relative density, the frequency of attendance, and distribution patterns of Pandanus tectorius (sea pandanus) vegetation. Based on the results of data processing, the biophysical conditions in Pangumbahan Beach are still suitable for the Chelonia mydas nesting habitat. It also got clear evidence of the many Chelonia mydas landings during the data collection.


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