Bioclimatic niches of selected endemic Ixora species on the Philippines: predicting habitat suitability due to climate change

Banag, Cecilia I.; Thrippleton, Timothy; Alejandro, Grecebio Jonathan D.; Reineking, Björn; Liede‐Schumann, Sigrid

doi:10.1007/s11258-015-0512-6

Cited by 21 publications

(18 citation statements)

References 56 publications

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“…The pantropical Ixora L. constitutes one of the largest Rubiaceae genus in the Philippines comprising of 34 species of woody shrubs and trees, with 25 endemic species (Banag et al 2015(Banag et al , 2017. Almost all Ixora have narrow ecological tolerances and are restricted to rainforest habitats (De Block 1998), as we observed.…”

Section: Discussionsupporting

confidence: 60%

“…Almost all Ixora have narrow ecological tolerances and are restricted to rainforest habitats (De Block 1998), as we observed. A recent study by Banag et al (2015) revealed that Philippine endemic Ixora prefer narrow temperature and wider precipitation niches. The endemic I. bartlingii Elmer will have an expected range shift in their distribution southwards under predicted future climate scenarios.…”

Section: Discussionmentioning

confidence: 99%

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A checklist of Rubiaceae species from Eastern Samar, Visayas, Philippines

Ordas¹,

Pinarok²,

Romeroso³

et al. 2019

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Samar Island is a center of botanical wealth throughout the Philippine archipelago. However, floristic knowledge of the island is deficient and most of its forested areas remain largely unexplored. Thus, floristic surveys of Rubiaceae members were made on Eastern Samar, located in Visayas, Philippines. Collections were conducted from June 2013 to June 2017 within 5 municipalities: Borongan, Balangkayan, Taft, Guiuan, and Llorente. In total, 59 species belonging to 31 genera representing 21 tribes of the family were recorded. The most species-rich tribes belong to Naucleeae, Psychotrieae, and Spermacoceae, with 10, 8, and 6 species, respectively. Of the 59 species recorded, 37 are endemic to the Philippines. Twelve species are listed as threatened species based on its proposed IUCN category and DAO 2017-11. This study presents an enumeration of Rubiaceae found on selected forested areas of Eastern Samar, Philippines.

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Section: Discussionsupporting

confidence: 60%

Section: Discussionmentioning

confidence: 99%

A checklist of Rubiaceae species from Eastern Samar, Visayas, Philippines

Ordas¹,

Pinarok²,

Romeroso³

et al. 2019

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“…All the eight taxa of Psychotria collected are Philippine endemics, as verified in the study of Alejandro (2007) and the Co's Digital Flora of the Philippines (Pelser et al 2011). Among species with narrow ranges, endemic species are of particular concern since they are confined to a particular geographic area and may have small population sizes associated with a relatively high risk of extinction (Ndayishimiye et al 2012;Banag et al 2015). Conduct of a floristic survey like this is a must to update the conservation status of Philippine flora, especially our endemics.…”

Section: Discussionmentioning

confidence: 99%

“…In terms of the annual and seasonal rainfall, increasing trends were observed in various parts of the country (PAGASA 2018(PAGASA , 2020. Nevertheless, projected changes in rainfall could be within the natural rainfall variations, except for the central sections of Mindanao, where there is a projected rainfall reduction (Banag et al 2015;PAGASA 2018). A slight decrease in the number of tropical cyclones (TCs) and a minimal increase in the frequency of very strong (TCs) have been noticed in the Philippine area of responsibility in the past 65 years (PAGASA 2018(PAGASA , 2020.…”

Section: Discussionmentioning

confidence: 99%

Short Communication: Rediscovery of Psychotria species, subspecies, and varieties collected in the 1990s and new records of Antirhea benguetensis (Elmer) Valeton and Ixora longifolia Smith (Rubiaceae) in Northern Sierra Madre Natural Park, Luzon, Philipp

Biag

Alejandro

2020

Biodiversitas

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Abstract. Biag RD, Alejandro GJD. 2020. Short Communication: Rediscovery of Psychotria species, subspecies and varieties collected in the 1990s and new records of Antirhea benguetensis (Elmer) Valeton and Ixora longifolia Smith (Rubiaceae) in Northern Sierra Madre Natural Park, Luzon, Philippines. Biodiversitas 21: 4524-4535. Tagged as the “last great forest” for it possesses the widest remaining tropical rainforest in the island of Luzon, the Northern Sierra Madre Natural Park (NSMNP) in the province of Isabela is worth-conserving. Owing to the species richness and high levels of endemism in the said area, it was identified as a key biodiversity area for conservation and protection. After a botanical exploration in the park conducted from April to August 2019, 89 Rubiaceae species were found dominated by the genus Psychotria. These Psychotria species were then separated from other genera and were morphologically examined and eventually identified. This study, therefore, primarily aims to provide the list of Psychotria species that were collected long before, particularly in the 1990s and still exist in NSMNP continuously battling against the catastrophic activities within the forest. Eight Philippine endemic Psychotria species and varieties were recollected. As to their current conservation status following IUCN criteria, we herein propose these species, except for Psychotria pubilimba, to be treated as Data Deficient (DD) since there is lack of distributional data for these species. Additional surveys are to be conducted on the areas where these species were previously collected. In this way, information on population size and threats to the species can also be obtained. P. pubilimba is restricted to Cagayan and Isabela. Only one mature individual has been found; hence, a Narrow Endemic Species (NES). Being an NES, it was then assessed as Critically Endangered (CR) based on IUCN rules. It is also worth noting that new records of Antirhea benguetensis and Ixora longifolia species were found in the park, particularly in Divilacan, Isabela. The former has been regarded as Luzon endemic, known to be distributed only in Benguet, Ilocos Sur, Rizal, and Bataan. The latter, on the other hand, is mostly distributed in the provinces of Visayas and Mindanao, and only Masbate and Palawan for Luzon. Moreover, this flora has been recorded in other parts of the world like China, India, Myanmar, Indonesia, Malaysia, and Vietnam.

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“…Over the last three decades, the global climate change has produced numerous shifts in species distribution and in the near future, it is likely to act as a major cause of species extinctioneither directly or collegially with other drivers of extinction (Deb et al, 2017). Hence, intensifying endangerment and extinction of species that are already vulnerable, particularly those with strict habitat requirements and dispersal capabilities (Banag et al, 2015;Garcia et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

MODELING SPECIES DISTRIBUTION OF SHOREA GUISO (BLANCO) BLUME AND PARASHOREA MALAANONAN (BLANCO) MERR IN MOUNT MAKILING FOREST RESERVE USING MAXENT

Tumaneng

Tiburan

2019

Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci.

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Abstract. Climate change is regarded as one of the most significant drivers of biodiversity loss and altered forest ecosystems. This study aimed to model the current species distribution of two dipterocarp species in Mount Makiling Forest Reserve as well as the future distribution under different climate emission scenarios and global climate models. A machine-learning algorithm based on the principle of maximum entropy (Maxent) was used to generate the potential distributions of two dipterocarp species – Shorea guiso and Parashorea malaanonan. The species occurrence records of these species and sets of bioclimatic and physical variables were used in Maxent to predict the current and future distribution of these dipterocarp species. The variables were initially reduced and selected using Principal Component Analysis (PCA). Moreover, two global climate models (GCMs) and climate emission scenarios (RCP4.5 and RCP8.5) projected to 2050 and 2070 were utilized in the study. The Maxent models predict that suitable areas for P. malaanonan will decline by 2050 and 2070 under RCP4.5 and RCP 8.5. On the other hand, S. guiso was found to benefit from future climate with increasing suitable areas. The findings of this study will provide initial understanding on how climate change affects the distribution of threatened species such as dipterocarps. It can also be used to aid decision-making process to better conserve the potential habitat of these species in current and future climate scenarios.

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Bioclimatic niches of selected endemic Ixora species on the Philippines: predicting habitat suitability due to climate change

Cited by 21 publications

References 56 publications

A checklist of Rubiaceae species from Eastern Samar, Visayas, Philippines

A checklist of Rubiaceae species from Eastern Samar, Visayas, Philippines

Short Communication: Rediscovery of Psychotria species, subspecies, and varieties collected in the 1990s and new records of Antirhea benguetensis (Elmer) Valeton and Ixora longifolia Smith (Rubiaceae) in Northern Sierra Madre Natural Park, Luzon, Philipp

MODELING SPECIES DISTRIBUTION OF SHOREA GUISO (BLANCO) BLUME AND PARASHOREA MALAANONAN (BLANCO) MERR IN MOUNT MAKILING FOREST RESERVE USING MAXENT

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