Rhizophora apiculata

Rhizophora apiculata
Name	Rhizophora apiculata
Genus	Rhizophora
Species	apiculata
Authority	Blume

Rhizophora apiculata is a mangrove tree species in the family Rhizophoraceae native to tropical and subtropical coastlines of the Indo-Pacific. It is widely cited in regional floras and conservation literature for its structural role in coastal ecosystems and its economic value to local communities. Scientific attention to this species appears in publications associated with institutions such as the Royal Botanic Gardens, Kew, Singapore Botanic Gardens, Smithsonian Institution, CSIRO, and universities like University of Oxford and University of Cambridge.

Taxonomy and Nomenclature

Rhizophora apiculata was described by the botanist Carl Ludwig Blume and is placed in the genus Rhizophora within the family Rhizophoraceae, a lineage treated in floras such as the Flora of China and the Flora Malesiana. Taxonomic treatments reference herbaria holdings at the Kew Herbarium, Herbarium Bogoriense, and collections cited by researchers affiliated with the Natural History Museum, London and the National Herbarium of the Netherlands. Synonymy and varietal concepts have been discussed in monographs and revisions produced by authors connected to the Royal Society publishing network and regional botanical projects supported by agencies like the Food and Agriculture Organization.

Description

Rhizophora apiculata is characterized as a medium to large evergreen tree with morphological descriptions appearing in field guides used in work by the United Nations Environment Programme and regional agencies including the Ministry of Environment and Forestry (Indonesia) and the Department of Forestry (Thailand). Vegetative characters include opposite, thick leaves and stout prop roots, diagnostic features compared in keys from the Arnold Arboretum and illustrated in plates in publications from the Biodiversity Heritage Library. Inflorescences, flower morphology, and viviparous propagules are described in botanical accounts referenced by researchers at the University of Tokyo and the Australian National University.

Distribution and Habitat

The native range of Rhizophora apiculata spans the Indo-Pacific, with occurrences documented from the coasts of India and Sri Lanka through Bangladesh, Myanmar, Thailand, Malaysia, Singapore, Indonesia, and extending to northern Australia and Pacific island groups such as Papua New Guinea and the Solomon Islands. Distribution records are compiled in databases curated by the International Union for Conservation of Nature and regional biodiversity projects coordinated with the Asia-Pacific Network for Global Change Research. Habitat descriptions emphasize intertidal mangrove forests, estuarine shorelines, and sheltered bays cited in environmental assessments by organizations like Conservation International and the World Wide Fund for Nature.

Ecology and Reproduction

Ecological roles of Rhizophora apiculata are documented in ecosystem studies linked to institutions including the Smithsonian Tropical Research Institute, James Cook University, and the Woods Hole Oceanographic Institution. The species contributes to shoreline stabilization, sediment accumulation, and nursery habitat functions that are highlighted in reports by the United Nations Development Programme and the Global Mangrove Alliance. Reproductive biology is characterized by vivipary and propagule dispersal by tidal currents, phenomena studied in academic programs at the University of California, Berkeley and the University of Hawaii. Interactions with faunal assemblages—such as fisheries referenced by the Food and Agriculture Organization—and symbioses involving microbial communities have been subjects of research funded by bodies like the National Science Foundation and national research councils of Japan and Australia.

Uses and Economic Importance

Rhizophora apiculata provides timber, charcoal, and traditional materials cited in economic botany literature produced by the Royal Botanic Gardens, Kew and regional development agencies including the Asian Development Bank and the World Bank. Local uses documented in ethnobotanical studies by scholars at the University of Malaya and the University of the Philippines include construction, boat building, and fuelwood. The species has been incorporated in coastal afforestation and restoration projects supported by programs of the International Union for Conservation of Nature, Conservation International, and national ministries such as the Ministry of Environment (Indonesia). Commercial and non-timber benefits are discussed in evaluations by the United Nations Environment Programme and multilateral initiatives like the Global Environment Facility.

Conservation and Threats

Conservation status assessments involving Rhizophora apiculata appear in regional IUCN Red List accounts and national red lists prepared by agencies such as the Department of Environment and Natural Resources (Philippines), the Ministry of Environment and Natural Resources (Vietnam), and the National Environment Agency (Singapore). Threats include coastal development, aquaculture expansion, pollution, and sea-level rise documented in impact studies by the Intergovernmental Panel on Climate Change, United Nations Framework Convention on Climate Change, and research centers like the International Centre for Ocean Development. Restoration, protected area designation, and policy responses have been implemented through collaborations among NGOs such as the World Wide Fund for Nature, governmental bodies like the Ministry of Environment, Forest and Climate Change (India), and international funding mechanisms including the Green Climate Fund.

Category:Rhizophoraceae