Elevational Pattern of Orchid Rarity and Endemism in Mt. Kalatungan, Mindanao Island, Philippines

Betanio, Jessa Marie Garsuta; Buenavista, Dave P.

doi:10.11594/jtls.08.02.03

Cited by 3 publications

(1 citation statement)

References 21 publications

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“…We recorded the lowest and highest elevations at which each species was observed in KBA 196 using a Global Positioning System (Garmin 64s, USA). Our record was augmented with data from CDFP (Pelser et al, 2011 onwards) and published literature (Betanio & Buenavista, 2018;Cootes, 2001Cootes, , 2011 to cover documented elevational range of each species. We defined vertical distribution as the range from forest floor (0 m) to forest canopy, assessing the height at which orchids were observed through visual estimation relative to the height of second author.…”

Section: Elevational and Vertical Distributionsmentioning

confidence: 99%

Orchid trade at the source: Epiphytic species with conspicuous flowers in low‐elevation forests are more locally collected in a Philippine key biodiversity area

Pitogo,

Saavedra

2024

Biotropica

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Orchids are the most heavily traded plant group globally, putting pressure on wild populations in many source countries like the Philippines. Despite its rich orchid diversity, there remains a notable gap in understanding the factors driving orchid trade within the country. To address this knowledge gap and support orchid conservation efforts, we utilized a 5‐year orchid diversity dataset extensively collected through floristic field and village garden surveys in one of the largest key biodiversity areas in the southern Philippines. We employed a trait‐based approach to investigate ecological drivers of local orchid collection within this source area. Our results show that around 36% of local orchid diversity have predicted collection risks of ≥50%. Notably, locally collected orchid species exhibited multiple, large, and conspicuously colored flowers that are found in low‐elevation forests and higher up in forest stratum. Elevational distribution and flower size emerged as the strongest predictors, potentially influencing collection preferences. Our analysis of predicted collection risks underscores the vulnerability of both threatened and non‐threatened orchid species to local collection pressures. Moreover, we highlight the practical utility of our trait‐based approach in predicting risks and informing management strategies for local orchid conservation. This research marks a significant step toward identifying ecological drivers influencing orchid trade at its source, providing insights that can inform targeted conservation strategies across many key biodiversity areas for this highly diverse, charismatic, and threatened plant family.

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Section: Elevational and Vertical Distributionsmentioning

confidence: 99%

Orchid trade at the source: Epiphytic species with conspicuous flowers in low‐elevation forests are more locally collected in a Philippine key biodiversity area

Pitogo,

Saavedra

2024

Biotropica

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Diversity and composition of plants species along elevational gradient: research trends

Dani

Divakar²,

Baniya

2023

Biodivers Conserv

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Studies on species richness pattern along elevation gradient is fascinatingly gaining consideration. We compiled data from 118 studies of elevational gradients between the years 2001-2021 in a broad range of organisms throughout the world to estimate the designs of species richness and their determinants.The present study showed that more than half (57%) studies with unimodal hump-shaped richness pattern (maximum diversity at middle and lower at edges) followed by a monotonic decline (26%) in different taxa of plant. Nearly one-fth studies (17.5%) followed either monotonic incline or reverse hump shaped or non-distinct patterns. Extensive studies in mountainous regions, more uniform model as a unimodal hump shape was present. In spite of latitudinal and elevation variation, both hemispheres showed similar patterns of species richness for all plant taxa. Some taxa showed bimodal and some others showed multi model patterns of elevation species richness patterns having peak diversity due to topographical and climatic factors. Upper and lower elevational ranges may provide extremities in temperature and rainfall for decreasing the species diversity. The mid domain effect may explain this species richness pattern. But this present study con rmed the presence of hump shaped species richness pattern due to extend of the midpoint elevation or elevation range considered for an individual species. Higher the midpoint value longer an elevation range that favours unimodal pattern.

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An index for assessing the rare species of a community

Maciel

2021

Ecological Indicators

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Elevational Pattern of Orchid Rarity and Endemism in Mt. Kalatungan, Mindanao Island, Philippines

Cited by 3 publications

References 21 publications

Orchid trade at the source: Epiphytic species with conspicuous flowers in low‐elevation forests are more locally collected in a Philippine key biodiversity area

Orchid trade at the source: Epiphytic species with conspicuous flowers in low‐elevation forests are more locally collected in a Philippine key biodiversity area

Diversity and composition of plants species along elevational gradient: research trends

An index for assessing the rare species of a community

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