scholarly journals KEANEKARAGAMAN DAN KELIMPAHAN ANGGREK EPIFIT DI KAKI GUNUNG LIANGPRAN, KALIMANTAN TIMUR

2019 ◽  
Vol 18 (3) ◽  
Author(s):  
Surianto Effendi ◽  
Nunik Sri Ariyanti ◽  
Tatik Chikmawati
Keyword(s):  
River Estuary ◽  
Host Tree ◽  
Conservation Area ◽  
Epiphytic Orchids ◽  
Epiphytic Orchid ◽  
Host Trees ◽  
Zone Ii ◽  
Study Sites ◽  
High Diversity ◽  
Tree Characteristics

Liangpran Mountain is located within the Heart of Borneo (HoB) Conservation Area which has high biodiversity. The exploration of orchids has been carried out in several locations in the HoB region and recorded a high diversity of wild orchid. This research was conducted to explore and inventory the orchids from the foothill of Mount Liangpran, and record  the diversity and abundance of epiphytic orchids in the study sites. This research was carried out by making track of exploration along the Nuyung river estuary to the Tebing Lapah. The richness and abundance data were collected in three plot of 1000 x 20 m. The host tree characteristics and distribution of epiphytic orchid on the host tree were recorded. Fourteen species orchids were collected, and the most dominant are Coelogyne asperata and Agrostophyllum stipulatum with an abundance of 23.53% each. The epiphytic orchids in host trees are spread from the zone II to V based on the Johansson’s sections, in which zone IV is the most diverse. Nine species of the host trees associated with the collected orchids were identified and grouped into five families. The characters of host trees are 7–57 m height,12–112 cm diameters, and 2 types of bark surfaces (rough and intermediate). 

Networks of epiphytic orchids and host trees in Brazilian gallery forests

2010 ◽  
Vol 26 (2) ◽  
pp. 127-137 ◽  
Author(s):  
Igor A. Silva ◽  
Alessandro W. C. Ferreira ◽  
Maria I. S. Lima ◽  
João J. Soares
Keyword(s):  
Tree Species ◽  
Species Interactions ◽  
Host Tree ◽  
Binary Interaction ◽  
Phylogenetic Structure ◽  
Epiphytic Orchids ◽  
Host Trees ◽  
Regional Species Pool ◽  
Gallery Forests ◽  
Host Tree Species

Abstract:Species interactions have been recently depicted as networks, in which each species is connected to one or more other species in binary interaction matrices. Forty networks of epiphytic orchid and host tree species were assessed in Brazilian gallery forests. The nestedness of the networks was estimated with the NODF index and the significance was tested with null models. The phylogenetic structure of the network was also assessed, by searching for phylogenetic signals in the number of interactions and in the similarity of interacting species. In total, 105 orchid species and 132 host tree species were sampled. A nested pattern in all orchid–host tree networks was found. However, phylogenetic signals were not observed. The results support that the host specificity of orchids is small and most of the interactions occur among generalist orchids and generalist host trees. While the concept of species-specificity can thus be rejected, the extreme alternative – that interacting orchids and host trees are not a random subset of the regional species pool – can be dismissed as well. However, factors other than phylogenetic history may structure interaction networks of epiphytic orchids and host trees.

The role of shaded cocoa plantations in the maintenance of epiphytic orchids and their interactions with phorophytes

2019 ◽  
Vol 13 (1) ◽  
pp. 27-35 ◽  
Author(s):  
Jonas Morales-Linares ◽  
José G García-Franco ◽  
Alejandro Flores-Palacios ◽  
Thorsten Krömer ◽  
Tarin Toledo-Aceves
Keyword(s):  
Interaction Network ◽  
Natural Forests ◽  
Orchid Species ◽  
Epiphytic Orchids ◽  
Epiphytic Orchid ◽  
Host Trees ◽  
True Diversity ◽  
Nested Structure ◽  
Cam Species

Abstract Aims Habitat loss and fragmentation are the main threats to biodiversity in tropical forests. Agroecosystems such as shaded cocoa plantations (SCP) provide refuge for tropical forest biota. However, it is poorly known whether the interspecific ecological interactions are also maintained in these transformed habitats. We evaluated the diversity, reproductive status and photosynthetic metabolism (CAM or C3) of the epiphytic orchid community, and their interactions with host trees (phorophytes) in SCP compared to tropical rainforest (TRF). Methods In southeastern Mexico, three sites each in TRF and SCP were studied, with four 400 m2 plots established at each site to record all orchids and their phorophytes. We determined the reproductive (adult) or non-reproductive (juvenile) status of each orchid individual in relation to the presence or absence, respectively, of flowers/fruits (or remnants), and assigned the photosynthetic pathway of each orchid species based in literature. We used true diversity and ecological networks approaches to analyze orchid diversity and orchid–phorophyte interactions, respectively. Important Findings In total, 607 individuals belonging to 47 orchid species were recorded. Orchid diversity was higher in TRF (19 effective species) than in SCP (11 effective species) and only seven species were shared between the two habitats. CAM orchid species were more frequent in SCP (53%) than in TRF (14%). At the community level the proportion of non-reproductive and reproductive orchid species and the nested structure and specialization level of the TRF orchid–phorophyte network were maintained in SCP. However, only a subset of TRF epiphytic orchids remains in SCP, highlighting the importance of protecting TRF. Despite this difference, shaded agroecosystems such as SCP can maintain some of the diversity and functions of natural forests, since the SCP epiphytic orchid community, mainly composed of CAM species, and its phorophytes constitute a nested interaction network, which would confer robustness to disturbances.

scholarly journals Mountain Survey of Amphibians and Reptiles and their Conservation Status in Manaslu Conservation Area, Gorkha District, Western Nepal

2017 ◽  
Vol 5 (1) ◽  
pp. 13-18 ◽  
Author(s):  
Biraj Shrestha ◽  
Karan Bahadur Shah
Keyword(s):  
Protected Area ◽  
Conservation Status ◽  
Positive Association ◽  
Flowering Plants ◽  
Photo Elicitation ◽  
Conservation Area ◽  
Species Abundances ◽  
Rock Lizard ◽  
Study Sites ◽  
High Diversity

Aim The Manaslu Conservation Area (MCA), a geographically diverse protected area, is known for high diversity of flowering plants and endemism. However, information about status of herpetofauna is limited. This study aims to fill this gap by updating diversity and distribution of herpetofauna of the MCA. Location Sirdibas, Bihi and Prok Village Development Committees (VDCs), Gorkha district, Manaslu Conservation Area (MCA). Materials and methods We used a multi-prolonged strategy combining visual encounter survey (VES) along six transects (500m each) in Sirdibas, Bihi and Prok VDCs, patch sampling (PS) in two sites in Ghap and Prok VDCs and opportunistic observations (OO) along trekking trails from Sirdibas to Prok to document the presence of herpetofauna. We conducted questionnaire survey using photo-elicitation technique (PET) (n=30) to collect ethnoherpetological data. Key Findings We prepared a checklist of 22 species of amphibian and reptile by verification of data from VES, PS, OO and literature review. The Himalayan rock lizard, Laudakia tuberculata was common in all the study sites. The Hodgson’s racer - Elaphe hodgsonii was first described in the study area. The abundance of herpetofauna species decreased with increasing elevation (r = -0.53, P < 0.01). There was a positive association between species abundances and temperature (r = 0.49, P < 0.01). The ethnoherpetological survey revealed that the stream frogs locally called ‘Paha’ (genus ‘Amolops’, ‘Chaparana’ and ‘Paa’) were commonly consumed for food and presumed health benefits. This may impose a serious threat. We recommend similar systematic study to document and describe herpetofauna in the region.

scholarly journals The vertical distribution of epiphytic orchids on Schima wallichii trees in a montane forest in West Java, Indonesia

2019 ◽  
Vol 21 (1) ◽  
Author(s):  
Indra Fardhani ◽  
Takeshi Torimaru ◽  
Hiromitsu Kisanuki
Keyword(s):  
Species Richness ◽  
Vertical Distribution ◽  
Montane Forest ◽  
Host Tree ◽  
West Java ◽  
Epiphytic Orchids ◽  
Epiphytic Orchid ◽  
Significant Difference ◽  
Schima Wallichii ◽  
The Vertical Distribution

Abstract. Fardhani I, Torimaru T, Kisanuki H. 2020. The vertical distribution of epiphytic orchids on Schima wallichii trees in a montane forest in West Java, Indonesia. Biodiversitas 21: 290-298. Schima wallichii Choisy. is a mostly montane species native to the island of Java; it grows on degraded land areas and is widely used for forest restoration. We studied the vertical distribution of epiphytic orchids on these trees in montane forest on Mt. Sanggara, West Java, Indonesia. To this end, 40 S. wallichii trees with diameter at breast height (DBH) > 20 cm were chosen haphazardly and their epiphytic orchids were identified The diameter and height of each host tree were measured. The position of each epiphytic orchid on each host tree was allocated to one of five zones using Johansson’s method. In total, 39 epiphytic orchid species were identified on 40 host trees at the study site. There was no significant difference in orchid abundance or species richness between crown zones. However, there were significant differences in orchid abundance and species richness between trunks and crowns. Host tree size (DBH) and the number of branches were positively correlated with orchid abundance and species richness. The numbers of orchids and other epiphytic plants were positively correlated in the mid-crown and outer-crown. S. wallichii trees are essential for the epiphytic orchid community because they produce many branches that are suitable for colonization.

scholarly journals Diversity and Distribution of Vascular Epiphytic Flora in Sub-temperate Forests of Darjeeling Himalaya, India

2020 ◽  
pp. 63-81
Author(s):  
Preshina Rai ◽  
Saurav Moktan
Keyword(s):  
Host Species ◽  
Temperate Forests ◽  
Host Tree ◽  
Eastern Himalaya ◽  
Vascular Epiphytes ◽  
Tree Distribution ◽  
Darjeeling Himalaya ◽  
Host Trees ◽  
Epiphytic Plant ◽  
Study Sites

Aims: This communication deals with the diversity and distribution including host species distribution of vascular epiphytes also reflecting its phenological observations. Study Design: Random field survey was carried out in the study site to identify and record the taxa. Host species was identified and vascular epiphytes were noted. Study Site and Duration: The study was conducted in the sub-temperate forests of Darjeeling Himalaya which is a part of the eastern Himalaya hotspot. The zone extends between 1200 to 1850 m amsl representing the amalgamation of both sub-tropical and temperate vegetation. The study was conducted during the year 2018-2019. Methodology: Process of random sampling collection was followed. Host trees with CBH >30 cm were identified and percentage of distribution of epiphytes in the host tree was analyzed and divided into two zones depending on the abundance of epiphytes. Data for the epiphytic plant specimens were collected in the field. Exsiccates were made with the collected voucher specimens and were deposited at the Calcutta University Herbarium (CUH) following the conventional methodology. Study on the taxa are based on their host tree distribution, micro-habitat and phenological status. The location and altitude of the study sites were recorded by global positioning system. Results: A total number of 115 species under 70 genera and 31 families have been identified with 65% other vascular angiosperms (basal angiosperms and eudicots) and 16% monocots. Orchidaceae among the monocots represented 36% with 41 species and 18 genera. Ferns and lycophytes include 25% of the diversity with 29 taxa under 6 families. Most favorable host trees were Ficus auriculata Lour., Ficus neriifolia Sm., Saurauia nepalensis DC., Erythrina variegata L., Macaranga denticulata (Blume) Müll. Arg., Cryptomeria japonica (Thunb. ex L.f.) D. Don and Engelhardia spicata Lechen ex Blume. Conclusion: The other vascular angiosperms preferred wet monsoon for flowering whereas spring season was most favourable for Orchidaceae. Although a healthy number of vascular epiphytes have been identified, a number of threats are still prevailing in the regions which are mostly anthropogenic. Proper collaborative strategies have to be maintained for its conservation.

scholarly journals Diversity of Epiphytic Orchids, Hoya, Dischidia and Phorophytes (Host Trees) in Bawean Island Nature Reserve and Wildlife Reserve, East Java, Indonesia

2020 ◽  
Vol 5 (2) ◽  
pp. 78
Author(s):  
Trimanto Trimanto ◽  
Setyawan Agung Danarto
Keyword(s):  
Nature Reserve ◽  
Tectona Grandis ◽  
Small Island ◽  
Epiphytic Orchids ◽  
Epiphytic Orchid ◽  
Host Trees ◽  
On This Island ◽  
Epiphytic Plant ◽  
Cymbidium Aloifolium ◽  
Wildlife Reserve

Bawean Island is a small island located between two islands (Java and Borneo). Geographically, the diversity of plants, especially epiphytic plants on this island is very interesting to be studied. This research aims to investigate the diversity of epiphytic plants, focussing on epiphytic orchids, Hoya and Dischidia in Bawean Island Nature Reserve and Wildlife Reserve. It was conducted through an inventory of epiphytic orchids and hoya growing on host trees. The results showed there were 10 species of epiphytic orchid and 3 species of epiphytic Hoya, and 1 species of Dischidia growing on-location studies. The epiphytic orchids which found in location studies included Phalaenopsis amabilis, Aerides odorata, Cymbidium aloifolium, Dendrobium anosmum, Rhynchostylis retusa, Liparis condylobulbon, Taeniophyllum biocellatum, Cymbidium sp., Eria sp. Orchid species that most often found in the study location was Phalaenopsis amabilis. In addition, this study recorded Taeniophyllum biocellatum as an endemic orchid from Java that was found on this island. The epiphytic Hoya recorded in there, i.e. Hoya diversifolia, H. verticillata, and H. amoena, and also only found 1 species of  Dischidia was Dischidia imbricata. There were 12 species of trees as the host trees of epiphytic, i.e. Irvingia malayana, Tectona grandis, Diospyros buxyfolius were the host trees frequently found as the host of the epiphytic plant. Zone 3 as an area of 1/3 basal part of a total length of the branches was the most preferred zone by epiphytic orchids and hoya. The epiphytic orchid and hoya hardly found in Zone 5.

scholarly journals Paramyxo- and Coronaviruses in Rwandan Bats

2019 ◽  
Vol 4 (3) ◽  
pp. 99 ◽  
Author(s):  
Wanda Markotter ◽  
Marike Geldenhuys ◽  
Petrus Jansen van Vuren ◽  
Alan Kemp ◽  
Marinda Mortlock ◽  
...  
Keyword(s):  
Morphological Identification ◽  
Related Sequence ◽  
Genetic Database ◽  
Reverse Transcription Pcr ◽  
Fruit Bat ◽  
Pcr Assays ◽  
Study Sites ◽  
Positive Results ◽  
High Diversity ◽  
Horseshoe Bats

A high diversity of corona- and paramyxoviruses have been detected in different bat species at study sites worldwide, including Africa, however no biosurveillance studies from Rwanda have been reported. In this study, samples from bats collected from caves in Ruhengeri, Rwanda, were tested for the presence of corona- and paramyxoviral RNA using reverse transcription PCR assays. Positive results were further characterized by DNA sequencing and phylogenetic analysis. In addition to morphological identification of bat species, we also did molecular confirmation of species identities, contributing to the known genetic database available for African bat species. We detected a novel Betacoronavirus in two Geoffroy’s horseshoe bats (Rhinolophus clivosus) bats. We also detected several different paramyxoviral species from various insectivorous bats. One of these viral species was found to be homologous to the genomes of viruses belonging to the Jeilongvirus genus. Additionally, a Henipavirus-related sequence was detected in an Egyptian rousette fruit bat (Rousettus aegyptiacus). These results expand on the known diversity of corona- and paramyxoviruses and their geographical distribution in Africa.

scholarly journals Host Tree Identity Influences Leaf Nutrient Relations of the Epiphyte Dendrobium guamense Ames.

Horticulturae ◽  
2018 ◽  
Vol 4 (4) ◽  
pp. 43 ◽  
Author(s):  
Thomas Marler
Keyword(s):  
Leaf Litter ◽  
Nutrient Deficiency ◽  
Host Tree ◽  
Nutrient Concentrations ◽  
Epiphytic Orchid ◽  
Green Leaves ◽  
Manganese Zinc ◽  
Host Identity ◽  
Calcium Iron ◽  
Iron Manganese

Epiphytic orchid species grow in stressful conditions that include nutrient deficiency. A greater understanding of the factors that influence epiphytic orchid nutrition may benefit conservationists and horticulturists. Green and senesced leaf nutrient concentrations of the epiphytic Dendrobium guamense were quantified among six host tree species to more fully understand the role of contrasting host identity. Green leaves for D. guamense plants on species with vertical stems contained greater nitrogen, calcium, iron, manganese, zinc, and boron concentrations. Green leaves for D. guamense plants on species with horizontal stems contained greater phosphorus, magnesium, and copper concentrations. Senesced D. guamense leaves followed similar patterns among the host species for all elements except calcium, manganese, and boron. The stoichiometry among green leaf macronutrients indicated nitrogen was most limiting, and the limitation was more severe for plants on horizontal stems. Carbon:nitrogen of senesced leaves indicated D. guamense plants on vertical stems produced higher quality leaf litter, predicting slower decomposition of orchid leaf litter from plants growing on hosts with horizontal stems. The results may improve horticultural decisions to support conservation efforts and show that host identity is a variable that should be more fully studied to understand epiphyte biology.

Are epiphytic bryophyte communities characterized by changes along an elevational gradient?—A preliminary study on eastern Viti Levu, Fiji Islands

2017 ◽  
Vol 39 (1) ◽  
pp. 28 ◽  
Author(s):  
MEREIA TABUA ◽  
RALPH RILEY ◽  
MATT A. M. RENNER ◽  
LARS SÖDERSTRÖM ◽  
ANDERS HAGBORG ◽  
...  
Keyword(s):  
Elevational Gradient ◽  
Host Tree ◽  
Tree Level ◽  
Forest Protection ◽  
Upland Forest ◽  
Fiji Islands ◽  
Fern Species ◽  
Microclimatic Conditions ◽  
Study Sites ◽  
Elevational Range

A comparative study of epiphytic bryophytes on tree trunks was undertaken in three principal vegetation types along an elevational gradient on the windward wet side of the largest island in Fiji, Viti Levu. This ecological study is the first of its kind for Fiji and the islands of the South Pacific and it serves as groundwork for any future ecological research in the region for bryophytes. This study set out to test if elevational range of study sites and height along host tree stem influenced bryophyte species diversity and distribution in Fiji. This was done by assessing bryophyte species presence/absence on the lower stems of the Calophyllum spp. trees and tree fern species at three elevations (~160 m, 590 m, and 1260 m). There were two main findings that emerged from this preliminary assessment. Firstly, there was a hump-shaped distribution of bryophyte diversity with a peak of species richness observed at mid-elevation or in the upland forest; with a dominance of liverworts at each of the three elevations. Secondly, the bryophyte communities showed good separation at both host tree level and at the site level, reflecting the ecological differences between the different host trees and between the three sites along the elevational gradient. The results from this survey alone suggest the need for priority to be given to upland forest protection and conservation. It also demonstrates the usefulness of bryophyte communities in discerning vegetation of different environmental and microclimatic conditions along an elevational gradient.

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