learn only 3 things about them ...
Tiny narrow leaves emerge in a rosette.
It is considered globally rare with a limited global distribution.
found at Chek Jawa, Sungei Buloh, Kranji and Mandai mangroves.
This small seagrass is quite commonly encountered on Chek Jawa, usually
in small patches on bare sand that are exposed at low tide near the
boardwalk, with larger meadows on the shore west of House No. 1. The
results of a transact survey of Chek Jawa suggest it is probably
sparsely distributed in the Chek Jawa seagrass lagoon. It is also
found at Sungei Buloh Wetland Reserve, with wide swathes along Kranji
Nature Trail and Mandai mangroves.
Globally, it is considered a rare and uncommon seagrass with a distribution
restricted to the Bay of Bengal and South China Sea. Singapore lies
near the southern most point of the global distribution (see global
range on the IUCN Red List). The first specimen of this seagrass
was discovered in Sarawak by the intrepid Italian botanist-explorer,
Beccari and named after him.
Features: Beccari's seagrass
is the smallest seagrass found on our shores (0.5cm long). The long
oval-shaped leaves emerge in a rosette of 5-10 tiny leaves on long
thin stems. Each plant may bear both male and female flowers, but
usually, only male or female flowers are visible on a plant. The flowers
and fruits are tiny. Each fruit contains up to 6 seeds.
On Chek Jawa, patches were seen among the byssus nests created by
(Musculita senhausia). In Singapore's northern mangroves, mangrove
seedlings are often seen in patches of this seagrass.
Role in the habitat: Studies
suggest that beds of Beccari's seagrass are an important nursery for
in many regions.
Status and threats: It is listed
as 'Critically Endangered' on the Red List of threatened plants of
Mandai mangroves, Jul 2013
in a rosette of 5-10 leaves.
Chek Jawa, Sep 11
growing next to byssus nests
created by Nest
Chek Jawa, May 09
Chek Jawa, Sep 11
Chek Jawa, Sep 11
carpets of this tiny seagrass grow
under the Sungei Buloh mangrove boardwalk.
Sungei Buloh Wetland Reserve, Aug 09
of this tiny seagrass sometimes
grow near the Chek Jawa boardwalk.
Chek Jawa, Aug 07
Mandai, Mar 11
seagrass on Singapore shores
but Mighty: Beccarii 'Critically Endangered' by Ria
Tan, Siti Maryam Yaakub and Andy Dinesh in the Seagrass-Watch
Magazine Issue 44 Nov 2011 (pdf)
beccarii (Alismatales: Hydrocharitaceae) Beccari's seagrass
by Lee Chengfa Benjamin, 2012 on taxo4254,
beccarii on the IUCN Red List: Taxonomy, assessment, geographic
range, population, habitat and ecology, threats, conservation
L.J., Yaakub, S.M., and Yoshida, R.L. (2007). Seagrass-Watch:
Guidelines for TeamSeagrass Singapore Participants (PDF).
Proceedings of a training workshop, National Parks Board, Biodiversity
Centre, Singapore, 24th-25th March 2007 (DPI&F, Cairns). 32pp.
of Hong Kong seagrasses on the Porcupine Homepage of the Department
of Ecology & Biodiversity, The University of Hong Kong website:
brief description of H. beccarii and its possible role
as a nursery for horseshoe crabs.
- On the wild
shores of singapore blog
G.W. H. and P. K. L. Ng and Ho Hua Chew, 2008. The Singapore
Red Data Book: Threatened plants and animals of Singapore.
Nature Society (Singapore). 285 pp.
Michelle (et. al). 2004. A Guide to Tropical Seagrasses of
the Indo-West Pacific. 2004. James Cook University. 72 pp.
H. P. & Menez, E. G., 1997.Field
Guide to the Common Mangroves, Seagrasses and Algae of the Philippines.
Bookmark, Inc., the Philippines. 197 pp.
- Hsuan Keng,
S.C. Chin and H. T. W. Tan.1998, The
Concise Flora of Singapore II: Monoctyledons
Singapore University Press. 215 pp.