Elaine Loreen Casapao Villanueva

• Master of Science
• University of the Philippines Los Baños

Buot Jr IE, Villanueva ELC, Origenes MG, Obeña RDR. 2023. Forests over limestone in Guiuan, Eastern Samar, the Philippines: Species composition and influencing environmental factors. Biodiversitas 24: 5123-5136. Forests over limestone are critical ecosystems providing numerous ecosystem services. However, the ecology of these ecosystems is less stu...

Understory plant species diversity was assessed within forests over limestone across municipalities of Paranas, Taft, and Guiuan in Samar Island, Philippines. Edaphic factors were analyzed and subjected to cluster and ordination analysis. A total of 26 understory plants were recorded, 6 fern species belonging to 6 genera in 6 families and 20 flower...

Villanueva ELC, Obeña RDR, Origenes MG, Buot IE Jr. 2022. Vegetation structure of forests over limestone and its influencing environmental factors in Samar Island Natural Park, Philippines. Biodiversitas 23: 6492-6512. Samar Island National Park (SINP) forests over limestone, a nominee to the UNESCO World Natural Heritage List, needs a comprehensiv...

This study was conducted to determine threatened woody plants in forests over limestone in Samar Natural Park (SINP), Guiuan Marine Resource Protected Landscapes and Seascapes (GMRPLS), and other areas in the Philippines, in order to design a strategic framework for sustainable conservation of threatened species. Combined fieldwork using standard v...

A comprehensive list of plant and animal biodiversity is necessary as a basis for local government and concerned agencies to enact local policies on species conservation. This article provides an enumeration of the vascular flora and vertebrate fauna in the karst forests of Basey, Samar, Philippines. A review of literature concerning plants and ani...

Leaf size is one of the plant functional traits that can explain ecosystem function. This study identified the leaf size classes of trees in the forest over limestone ecosystems of Samar Island Natural Park, Samar Island, Philippines. One-sided surface leaf areas of voucher specimens from 18 sites in SINP were measured and data obtained were calcul...

This study provides a floral and faunal checklist of limestone forests in Taft, Eastern Samar, Philippines, a municipality that is a part of the Samar Island Natural Park. Nine (9) 20m x 20m plots were established to assess the tree species, while 18 line transects were placed within the plots for the assessment of the under-story species. Various...

This study provides a checklist of the vascular flora and terrestrial vertebrate fauna in forests over limestone in Paranas, Samar Island Natural Park (SINP), Philippines, a UNESCO World Natural Heritage Site nominee. Nine 20x20m plots and 18 line transects were established for the floral inventory. The faunal assessment was conducted in transects...

The Philippine teak forest (PTF) is a formation with the Endangered Tectona philippinensis Benth. & Hook. f., Lamiaceae-an endemic tree flora in the Batangas Province along the Verde Island Passage, Luzon Island, Philippines. In this study, we determine the general floristic composition of PTF. Vegetation analysis across coastal to inland continuum...

This study presents the first checklist of the lesser known terrestrial biodiversity in forests over limestone karst of Calicoan Island in Guiuan Marine Reserve Protected Landscape and Seascape, Guiuan, Eastern Samar, Philippines. Plants and terrestrial vertebrate species in nine 20x20 m plots and 18 line transects were recorded and identified. A t...

A comprehensive review of literature was carried out to determine the status of plant and animal diversity on forests over limestone in Southeast Asia (SEA), particularly in the Philippines. Angiosperm records are available in Peninsular Malaysia (1216 spp.); West Java and Seram Indonesia (101 and 149 spp., respectively); Laos (135 spp.); Thailand...

Sustainable use of terrestrial ecosystems is one of the targets of the 2015–2030 UN Sustainable Development Goals (SDGs). This chapter highlights the use of conservation priority setting of plant species at a local level as a tool to help attain this goal. Using a point scoring procedure, a localized conservation priority index (CPI) composed of fo...

Caringal AM, Buot IE Jr, Villanueva ELC. 2019. Woody plant communities in the Philippine teak forest landscape along Verde Island Passage, Batangas, Luzon, Philippines. Biodiversitas 20: 3189-3198. The study described the communities of woody plants in a semi-evergreen tropical forest dominated by endemic Philippine teak (Tectona philippinensis Ben...

The vegetation of Halcon Range is diverse, unique, and culturally important; however, there is a very limited information on its altitudinal distribution and structure, leading to the formation of land uses that trigger problem in sustainable management decisions for the mountain. This study analyzed the vegetation in land use types distribution al...

This study provides a list of Hoya species found in Quezon province, Luzon Island, Philippines. Several literature revealed that there are 39 species and six subspecies of Hoya found in the province of Quezon. From these species, 37 are endemic in the Philippines and two are indigenous. Human activities that can lead to forest degradation like ille...

This study provides a list of Hoyas that can be found in Mindoro Island, a distinct biogeographical region of the Philippines. Upon carrying out an exhaustive review of literature available about Hoyas, this study came up with 18 species of Hoyas, 15 of which are reported to be endemic. The ecosystem degradation especially in the forests of Mindoro...

There have been some studies on the plant species found in Mindoro, Philippines, but there remains little information in their status particularly at the local level. This paper presents a list of threatened plant species of Mindoro. A list of indicators of the conservation status was formulated for this particular study and was used for categorizi...

This study assessed the copper bioaccumulation in shells and soft tissues of edible marine bivalves obtained from a public market in Quezon Province. The collection of the marine bivalves from the public market was carried out for three consecutive months from September to November 2012. Bivalves' shells and soft tissues were acid-digested and exam...