scholarly journals First data on spiders (Arachnida: Araneae) from dry dipterocarp forests of Thailand

Check List ◽  
2016 ◽  
Vol 12 (6) ◽  
pp. 1996
Author(s):  
Prasit Wongprom ◽  
Ondřej Košulič
Keyword(s):  
Species Richness ◽  
Future Studies ◽  
Dipterocarp Forest ◽  
Dipterocarp Forests ◽  
Forest Functions ◽  
Dry Dipterocarp Forest

Faunistic records of spiders in dry dipterocarp forests of Thailand are presented. Spiders were surveyed from November 2008 to December 2012. A total of 1,926 spider individuals were collected from 16 locations by visually searching, sweeping grasses and herb vegetation, beating shrubs and trees, and shifting leaf litters. Spiders were identified to 106 species in 86 genera of 29 families. The families Araneidae, Salticidae, Thomisidae, Tetragnathidae, and Theridiidae exhibited higher species richness. Several families that are rare and poorly known in Thailand were recorded, such as Stenochilidae, Eresidae, Idiopidae, Theraphosidae, and Nemesiidae. A faunistic overview of the spiders found in dry dipterocarp forest is presented. In general, the diverse composition of spiders and their guilds and the occurrence of rare and poorly known species in the Thai region confirm the high biotic value of dry dipterocarp forests. Continuing to maintain dry dipterocarp forest functions should be considered in future studies.

scholarly journals Two New Russula Species (Fungi) from Dry Dipterocarp Forest in Thailand Suggest Niche Specialization to This Habitat Type

2021 ◽  
Author(s):  
Komsit Wisitrassameewong ◽  
Cathrin Manz ◽  
Felix Hampe ◽  
Brian P. Looney ◽  
Thitiya Boonpratuang ◽  
...  
Keyword(s):  
Phylogenetic Analysis ◽  
New Species ◽  
Habitat Type ◽  
Habitat Types ◽  
Spore Ornamentation ◽  
Dipterocarp Forest ◽  
Niche Specialization ◽  
Edible Species ◽  
Dipterocarp Forests ◽  
Dry Dipterocarp Forest

Abstract Dry dipterocarp forests are among the most common habitat types in Thailand. Russulaceae are known as common ectomycorrhizal symbionts of Dipterocarpaceae trees in this type of habitat. The present study aims to identify collections of Russula subsection Amoeninae Buyck from dry dipterocarp forests in Thailand. A multi-locus phylogenetic analysis placed Thai Amoeninae collections in two novel lineages, and they are described here as Russula bellissima sp. nov. and R. luteonana sp. nov. The closest identified relatives of both species were sequestrate species suggesting that they may belong to drought-adapted lineages. The analysis of publicly available ITS sequences in R. subsect. Amoeninae did not confirm evidence of any of the new species occurring in other Asian regions, indicating that dry dipterocarp forests might harbor a novel community of ectomycorrhizal fungi. Macromorphological characters are variable and are not totally reliable for distinguishing the new species from other previously described Asian Amoeninae species. Both new species are defined by a combination of differentiated micromorphological characteristics in spore ornamentation, hymenial cystidia and hyphal terminations in the pileipellis. The new Amoeninae species may correspond to some Russula species collected for consumption in Thailand, and the detailed description of the new species can be used for better identification of edible species and food safety in the region.

scholarly journals Estimating the economic value of absorbing and storing carbon in dipterocarp forests in Ia Pa district, Gia Lai province

2019 ◽  
Vol 18 (5) ◽  
pp. 79-86
Author(s):  
Trang T. Q. Nguyen
Keyword(s):  
Greenhouse Gas Emission ◽  
Economic Value ◽  
Forest Degradation ◽  
Rare Plants ◽  
Dipterocarp Forest ◽  
Dipterocarp Forests ◽  
Four Corners ◽  
Dry Dipterocarp Forest ◽  
Set Up ◽  
The Relationship

Dry dipterocarp forest is one of the ecosystems that features variety of rare plants and animals. The forest in Ia Pa district, Gia Lai province is declining owing to illegal logging and encroachment of forest land for cultivation. Forest degradation can reduce CO2 sequestration, contributing to increasing greenhouse gas emission and global warming. The study was carried out in the 4 quadrats (each 2,500 m2 = 50 × 50 m) in dry dipterocarp forest of Ia Pa district. In each quadrat, 5 sub-quadrats (each 25 m2 = 5 × 5 m) were set up, one at a central point and four at four corners of the quadrat, respectively. Based on the relationship between carbon stock and above-ground biomass, we found that CO2 accumulation in dry dipterocarp forest was 105.6 tons/ha corresponding to the economic value of 12,299,760 VND/ha. Thus, it is necessary to improve forest quality towards sustainable management of dry dipterocarp forest ecosystem and increase the economic value of the forest with respect to environmental services.

scholarly journals NEPENTHES DIVERSITY AND ABUNDANCE IN FIVE HABITATS IN BRUNEI DARUSSALAM

REINWARDTIA ◽  
2014 ◽  
Vol 14 (1) ◽  
pp. 67 ◽  
Author(s):  
Nurul Amal Latiff ◽  
Rahayu Sukmaria Sukri ◽  
Faizah Metali
Keyword(s):  
Species Richness ◽  
Species Abundance ◽  
Forest Types ◽  
Future Studies ◽  
White Sand ◽  
Brunei Darussalam ◽  
Dipterocarp Forests ◽  
Voucher Specimens ◽  
Set Up ◽  
Species Richness And Abundance

LATIFF, N. A., SUKRI, R. S., & METALI, F. Nepenthes diversity and abundance in five habitats in Brunei Darussalam. Reinwardtia 14(1):  67 – 71. -- The genus Nepenthes is known to be diverse in Bornean forests and has been recorded in Brunei Darussalam in various forest types. We aim to investigate variation in Nepenthes species richness and abundance at five forest types throughout Brunei Darussalam: open secondary, heath, peat swamp, white sand and mixed dipterocarp forests. A total of thirty-nine 5 x 5 m2 plots were set up in these forest types. Within each plot, Nepenthes species abundance was quantified, with Nepenthes voucher specimens collected and identified to determine species richness. No significant differences were detected either for Nepenthes species richness or abundance between the five forest types, despite records of Nepenthes in Brunei showing preferences for particular habitat types. We suggest that average species richness and abundance remained constant regardless of forest types in this study, but that these results would likely change if sampling intensity is increased in future studies. 

scholarly journals Effects of forest fire on the nitrogen cycle in a dry dipterocarp forest, Thailand

Tropics ◽  
2007 ◽  
Vol 16 (1) ◽  
pp. 41-45 ◽  
Author(s):  
Tetsuya TODA ◽  
Hiroshi TAKEDA ◽  
Naoko TOKUCHI ◽  
Seiichi OHTA ◽  
Chongrak WACHARINRAT ◽  
...  
Keyword(s):  
Forest Fire ◽  
Nitrogen Cycle ◽  
Dipterocarp Forest ◽  
Dry Dipterocarp Forest

Effect of Wildfire on the Occurrence of Three Squirrel Species in a Dry Dipterocarp Forest in Northeastern Thailand

Mammal Study ◽  
2017 ◽  
Vol 42 (4) ◽  
pp. 1-5 ◽  
Author(s):  
Shun Kobayashi ◽  
Jumlong Placksanoi ◽  
Artchawakom Taksin ◽  
Chittima Aryuthaka ◽  
Masako Izawa
Keyword(s):  
Dipterocarp Forest ◽  
Dry Dipterocarp Forest ◽  
Northeastern Thailand

Species checklist of Orthoptera (Insecta) from Sakaerat Environmental Research Station, Thailand (Southeast Asia)

Zootaxa ◽  
2017 ◽  
Vol 4306 (3) ◽  
pp. 301 ◽  
Author(s):  
PATTARAWICH DAWWRUENG ◽  
MING KAI TAN ◽  
TAKSIN ARTCHAWAKOM ◽  
SURACHIT WAENGSOTHORN
Keyword(s):  
Biosphere Reserve ◽  
Environmental Research ◽  
Evergreen Forest ◽  
Research Station ◽  
Undescribed Species ◽  
Biosphere Reserves ◽  
Dipterocarp Forest ◽  
Dry Evergreen Forest ◽  
Species Checklist ◽  
Dry Dipterocarp Forest

Sakaerat Biosphere Reserve is one of the four Biosphere Reserves in Thailand. It is situated at Khorat Plateau and comprises of mainly dry evergreen forest and dry dipterocarp forest. Despite studies that document its rich biodiversity, there was no concerted study on the orthopteran diversity. Recent sampling by the authors in Sakaerat led to the discovery of numerous undescribed species. A checklist, first for the place, is also reported here, each species represented with a habitus photograph. In total, 128 species of Orthoptera from 11 families were recorded. Caelifera (grasshoppers) were represented with five families and Ensifera (crickets and katydids) were represented with six families, making up 10 of the 16 lineages in the orthoptera phylogeny. 

scholarly journals Woody flora of Uruguay: inventory and implication within the Pampean region

2012 ◽  
Vol 26 (3) ◽  
pp. 537-552 ◽  
Author(s):  
Federico Haretche ◽  
Patricia Mai ◽  
Alejandro Brazeiro
Keyword(s):  
Species Richness ◽  
National Level ◽  
Similarity Index ◽  
Rio Grande Do Sul ◽  
Shrub Species ◽  
Future Studies ◽  
Adequate Knowledge ◽  
Pampean Region ◽  
Entre Rios ◽  
Available Information

Adequate knowledge of a flora is fundamental for furthering research in several disciplines. In this context, our work arises from the necessity to update and improve available information on the native woody flora of Uruguay. The goals of this study were to objectively determine the Uruguayan native woody flora (shrub and trees), to evaluate its inventory completeness, and to explore its similarity with neighboring regions. By analyzing the Uruguayan flora we produced working definitions of shrubs and trees, and obtained a list of 313 species (57 families, 125 genera). Using 7418 distribution records, we generated cumulative species richness curves to estimate maximum species richness at national and local scales. We conclude that the completeness at the national level is high (89-95%), but at the local scale is lower and quite heterogeneous. There are still large areas without data or with little information. We found that comparatively, the similarity between Uruguayan tree species and the Province of Entre Ríos (Argentina) was high, while similarity with the Province of Buenos Aires (Argentina) was medium, and with Rio Grande do Sul (Brazil) was low. In conclusion, richness of tree and shrub species of the Uruguayan flora is greater than expected for a grassland region, and the differences found in the similarity index with the neighboring woody floras will stimulate future studies to reevaluate phytogeographic schemes of the region.

scholarly journals Harnessing the Power of Metabarcoding in the Ecological Interpretation of Plant—Pollinator DNA Data: Strategies and Consequences of Filtering Approaches

Diversity ◽  
2021 ◽  
Vol 13 (9) ◽  
pp. 437
Author(s):  
Nicola Tommasi ◽  
Andrea Ferrari ◽  
Massimo Labra ◽  
Andrea Galimberti ◽  
Paolo Biella
Keyword(s):  
Species Richness ◽  
High Sensitivity ◽  
Conservative Approach ◽  
Pollen Assemblage ◽  
Future Studies ◽  
Molecular Features ◽  
Dna Metabarcoding ◽  
Plant Pollinator ◽  
Very High ◽  
Do So

Although DNA metabarcoding of pollen mixtures has been increasingly used in the field of pollination biology, methodological and interpretation issues arise due to its high sensitivity. Filtering or maintaining false positives, contaminants, and rare taxa or molecular features could lead to different ecological results. Here, we reviewed how this choice has been addressed in 43 studies featuring pollen DNA metabarcoding, which highlighted a very high heterogeneity of filtering methods. We assessed how these strategies shaped pollen assemblage composition, species richness, and interaction networks. To do so, we compared four processing methods: unfiltering, filtering with a proportional 1% of sample reads, a fixed threshold of 100 reads, and the ROC approach (Receiver Operator Characteristic). The results indicated that filtering impacted species composition and reduced species richness, with ROC emerging as a conservative approach. Moreover, in contrast to unfiltered networks, filtering decreased network Connectance and Entropy, and it increased Modularity and Connectivity, indicating that using cut-off thresholds better describes interactions. Overall, unfiltering might compromise reliable ecological interpretations, unless a study targets rare species. We discuss the suitability of each filtering type,plead for justifying filtering strategies on biological or methodological bases and for developing shared approaches to make future studies more comparable.

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