Comparison of transient and asymptotic perturbation analyses of three epiphytic orchid species growing in coffee plantations in Mexico: effect on conservation decisions

Mycorrhizal occurrence was tested in roots of 24 terrestrial and epiphytic orchid species growing at the Lankester Botanical Gardens (Cartago, Costa Rica). Standard staining and light microscopy were used to search for pelotons. Roots in contact with the substrate harbor extensive mycorrhyzal fungi. There may be a wide distribution and density of the fungal flora in the secondary forests of the site, this could explain the high natural regeneration of orchids on the garden.

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Colletorichum serranegrense sp. nov., a new endophytic species from the roots of the endangered Brazilian epiphytic orchid Cattleya jongheana

Phytotaxa ◽

10.11646/phytotaxa.351.2.4 ◽

2018 ◽

Vol 351 (2) ◽

pp. 163 ◽

Cited By ~ 1

Author(s):

MEIRIELE DA SILVA ◽

EVERALDO S. CRUZ ◽

TOMÁS G. R. VELOSO ◽

LETÍCIA MIRANDA ◽

OLINTO L. PEREIRA ◽

...

Keyword(s):

Species Complex ◽

Sequence Data ◽

Phylogenetic Analyses ◽

Minas Gerais ◽

The State ◽

Orchid Species ◽

Epiphytic Orchid ◽

Endangered Orchid ◽

Colletotrichum Gigasporum

A new endophytic species of Colletotrichum was isolated from an endangered orchid species, Cattleya jongheana in the Parque Estadual da Serra Negra, from the state of Minas Gerais, Brazil. It is described and illustrated as Colletotrichum serranegrense sp. nov. in this study. Morphology and multi-locus phylogenetic analyses based on combined ITS, ACT, TUB2 and CHS-1 sequence data revealed that these isolates were in the Colletotrichum gigasporum species complex and confirmed differences in this compared to other species in this genus.

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Spatio-temporal Analysis of the Effects of Hurricane Ivan on Two Contrasting Epiphytic Orchid Species in Guanahacabibes, Cuba

Biotropica ◽

10.1111/btp.12025 ◽

2013 ◽

Vol 45 (4) ◽

pp. 441-449 ◽

Cited By ~ 14

Author(s):

Thorsten Wiegand ◽

José Raventós ◽

Ernesto Mújica ◽

Elaine González ◽

Andreu Bonet

Keyword(s):

Temporal Analysis ◽

Orchid Species ◽

Epiphytic Orchid ◽

Hurricane Ivan ◽

Spatio Temporal

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

Journal of Plant Ecology ◽

10.1093/jpe/rtz052 ◽

2019 ◽

Vol 13 (1) ◽

pp. 27-35 ◽

Cited By ~ 1

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.

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Distribution pattern of the epiphytic orchid Rhynchostylis retusa under strong human influence in Kathmandu valley, Nepal

Botanica Orientalis Journal of Plant Science ◽

10.3126/botor.v8i0.5956 ◽

2012 ◽

Vol 8 ◽

pp. 90-99 ◽

Cited By ~ 7

Author(s):

Yagya Prasad Adhikari ◽

Anton Fischer

Keyword(s):

Land Use ◽

Light Intensity ◽

Distribution Pattern ◽

Water Holding Capacity ◽

Kathmandu Valley ◽

Ficus Religiosa ◽

Orchid Species ◽

Epiphytic Orchid ◽

Wide Range ◽

Water Holding

We studied distribution pattern of the epiphytic orchid Rhynchostylis retusa (L.) Blume with respect to (i) site characteristics and host conditions, and (ii) the type and intensity of land use in Kathmandu Valley, central Nepal. We established a 1.5 km grid net and analyzed epiphytic orchids at each point, searching for 10 trees as close as possible to the grid point. There we analyzed bark water-holding capacity, bark pH, bark roughness and light intensity. We assessed the probability of the occurrence of R. retusa in different land use patterns. Our results indicated that R. retusa was not a host-specific orchid species. It was found on different host tree species. However, Ficus religiosa was the most common host species. The correlation between R. retusa occurrence and microclimate condition was weak. R. retusa, to a certain degree, preferred light intensity of 40-80% of full sun light, rough bark with pH around 6.5 and bark with a wide range of water holding capacity. The distribution pattern of R. retusa was influenced by certain types of land use. The probability to find R. retusa was highest in forest patches and parks and lowest in agricultural and dense populated area. The study reveals that to improve the population size of R. retusa, trees (mainly Alnus nepalensis, Ficus religiosa and Schima wallichii) should be planted in areas where the orchid species is recently missing.doi: http://dx.doi.org/10.3126/botor.v8i0.5956 Botanica Orientalis – Journal of Plant Science (2011) 8: 90-99

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PENERAPAN METODE FORWARD CHAINING DAN CERTAINTY FACTOR PADA SISTEM PAKAR DIAGNOSA HAMA ANGGREK COELOGYNE PANDURATA

KLIK - KUMPULAN JURNAL ILMU KOMPUTER ◽

10.20527/klik.v4i2.89 ◽

2017 ◽

Vol 4 (2) ◽

pp. 136

Author(s):

Doddy Teguh Yuwono ◽

Abdul Fadlil ◽

Sunardi Sunardi

Keyword(s):

Expert System ◽

Confidence Level ◽

Human Intervention ◽

Certainty Factor ◽

Orchid Species ◽

Epiphytic Orchid ◽

Forward Chaining ◽

Pests And Diseases ◽

Existing Problems ◽

Factor Method

Coelogyne Pandurata or better known by the general name of black orchid, this orchid species only grows on the island of Borneo. Coelogyne Pandurata is an epiphytic orchid attached to other plants but not harmful. This orchid is one endemic of Borneo that requires human intervention to maintain its sustainability. Orchid plants are very susceptible to various pests and diseases. Because many orchid species are cultivated, the disease is difficult to recognize, because the symptoms of disease on orchids vary depending on the variety. The methods applied in this calculation are used Forward Chaining and Certainty Factor methods. This expert system allows users to diagnose pests that attack the Orchid Coelogyne Pandurata plant (Black Orchid Borneo) from various literature and initial observations. The result of application of Forward Chaining and Certainty Factor Method can give pest diagnosis on Orchid Coelogyne Pandurata based on the symptoms given Based on the calculation, the description of confidence level based on the interpretation table of the expert and the final percentage of 93.0736% is Very Probably both methods are applied To solve existing problems.Keywords: Coelogyne Pandurata, Certainty Factor, Expert system, Forward ChainingCoelogyne Pandurata atau lebih dikenal dengan nama umum anggrek hitam, spesies anggrek ini hanya tumbuh di pulau kalimantan. Coelogyne Pandurata merupakan anggrek epifit yaitu menempel pada tanaman lain tetapi tidak merugikan. Anggrek ini merupakan salah satu endemik kalimantan yang memerlukan campur tangan manusia untuk menjaga kelestariannya. Tanaman anggrek sangat rentan terhadap berbagai serangan hama dan penyakit. Karena jenis tanaman anggrek banyak dibudidayakan, menyebabkan penyakitnya sukar dikenal, karena gejala serangan penyakit pada anggrek bervariasi tergantung dari varietasnya. Metode yang diterapkan dalam perhitungan ini digunakan metode Forward Chaining dan Certainty Factor. Sistem pakar ini memungkinkan pengguna mendiagnosa hama yang menyerang tanaman Anggrek Coelogyne Pandurata (Anggrek Hitam Kalimantan) dari berbagai literatur dan pengamatan awal. Hasil penerapan Metode Forward Chaining dan Certainty Factor dapat memberikan diagnosa hama pada Anggrek Coelogyne Pandurata berdasarkan gejala-gejala yang diberikan Berdasarkan hasil perhitungan, maka keterangan tingkat keyakinan berdasarkan tabel interpretasi dari pakar dan persentase akhir sebesar 93,0736% adalah Sangat Mungkin kedua metode ini diterapkan untuk menyelesaikan masalah yang ada.Kata kunci: Coelogyne Pandurata, Certainty Factor, Forward Chaining, Sistem pakar

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EKSPLORASI DAN INDENTIFIKASI JENIS-JENIS ANGGREK DI KAWASAN HUTAN PULAU MANSINAM KABUPATEN MANOKWARI

JURNAL KEHUTANAN PAPUASIA ◽

10.46703/jurnalpapuasia.vol6.iss1.202 ◽

2020 ◽

Vol 6 (1) ◽

pp. 106-112

Author(s):

NIKSON REZALL BIETH ◽

AGUSTINA Y.S. AROBAYA

Keyword(s):

Morphological Characteristic ◽

Main Parameter ◽

Field Survey ◽

Mangifera Indica ◽

Main Stem ◽

Orchid Species ◽

Epiphytic Orchid ◽

Terminalia Catappa ◽

Alstonia Scholaris ◽

Stem Leaf

This study was focusing on identifying types of epiphytic orchid species through field survey by establishing plots and tracks for observation. The main parameter in the study was morphological characteristic of epiphytic orchid that covers shape, root, stem, leaf, fruit, and flower as well as its growing habitat. From the result standpoint, 6 epiphytic orchid species were identified that consisted of Dendrobium bifalce Lindl, Dendrobium mirbelianum Gaudich, Dendrobium schulleri J.J.Sm, Grammatophylum scriptum (Lindl.) Blume, Grammatophylum speciosum Blume, and Pomatocalpa sp aff Marsupial. In addition to their hosted plant, the result found several species of plant such as Mangifera indica, Alstonia scholaris, Baringtonia asicatica, Pometia sp, and Terminalia catappa which their growth was mostly sticking to the main stem and branch.

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