1Department of Environment and Natural Resources. Ecosystems Research and Development Bureau, College, Los Banos, Laguna 4031, Philippines
2Institute of Biological Sciences, University of the Philippines, Los Banos, Laguna, Philippines
Reforestation is one of the Philippines’ government efforts to restore and rehabilitate degraded mangrove ecosystems. Although there is recovery of the ecosystem in terms of vegetation, the recovery of closely-linked faunal species in terms of community structure is still understudied. This research investigates the community structure of mangrove crabs under two different management schemes: protected mangroves and reforested mangroves. The transect-plot method was employed in each management scheme to quantify the vegetation, crab assemblages and environmental variables. Community composition of crabs and mangrove trees were compared between protected and reforested mangroves using non-metric multi-dimensional scaling and analysis of similarity in PRIMER 6. Chi-squared was used to test the variance of sex ration of the crabs. Canonical Correspondence Analysis was used to determine the relationship between crabs and environmental parameters. A total of twelve species of crabs belonging to six families were identified in protected mangroves while only four species were documented in reforested mangroves. Perisesarma indiarum and Baptozius vinosus were the most dominant species in protected and reforested mangrove, respectively. Univariate analysis of variance of crab assemblage data revealed significant differences in crab composition and abundance between protected mangroves and from reforested mangroves (P<0.05). Canonical correspondence analysis showed that soil texture was found to greatly affect the distribution of crab assemblages and mangroves (P<0.05).Environmental factors and human intervention had contributed to the difference in crab assemblages in mangrove ecosystems.
Investigating the community structure of mangrove crabs in protected mangroves and reforested mangroves management schemes
Quantifying the vegetation, crab assemblages and environmental variables using the Transect-Plot method in each management scheme
Employing non-metric multi-dimensional scaling, canonical correspondence analysis and univariate analyses of variance to determine the relationship between crabs and environmental parameters
Identifying the significant differences in crab composition between protected mangroves and from reforested mangroves (P<0.05) due to variation in soil texture
Ashton, E.C.; Hogarth, P.J.; Macintosh, D.J., (2003a). A comparison of brachyuran crab community structure at four mangrove locations under different management systems along the Melaka Straits-Andaman Sea Coast of Malaysia and Thailand. Estuar. 26(6): 1461–1471 (11 pages).
Ashton, E.C.; Macintosh. D.J.; Hogarth, P.J., (2003b). A baseline study of the diversity and community ecology of crab and molluscan macrofauna in the Sematan Mangrove Forest, Sarawak, Malaysia J. Tropical Ecol. 19: 127-142 (16 pages).
Bosire, J.O.; Dahdouh-Guebas, F.; Kairo, J.G.; Cannicci, S.; Koedam, N., (2004). Spatial variations in macrobenthic fauna recolonisation in a tropical mangrove bay. Biodiversity Conserv. 13: 1059–1074 (16 pages).
Bunnuang, K.; Meesawad, K.; Jaroensutasinee, M.; Jaroensutasinee, K., (2005). Biological and physical Factors in population distribution and territorial defence of fiddler crabs, Uca vocans hesperiae Walailak. J. Sci. Tech., 1(2): 35-45 (11 pages).
Christy, J.H.; Morgan, S.G., (1998). Estuarine immigration by crab postlarvae: mechanisms, reliability and adaptive significance. Mar. Ecol. Prog. Ser. 174: 51-65 (15 pages).
Clarke, K.R., (1993). Non-parametric multivariate analyses of changes in community structure. Aust. J. Ecol. 18: 117-143 (28 pages).
Clough, B.F., (1993). The economic and environmental values of mangrove forests and their present state of conservation in the south-east Asia/Paciﬁc region mangrove ecosystems technical reports International Society for Mangrove Ecosystems, Okinawa (197 pages).
Dahdouh-Guebas, F.; Verneirt, M.; Tack, J.F.; Van Speybroeck, D.; Koedam, N., (1997). Food preferences in neosarmatium meinerti de man (Decapoda: Sesarminae) and its possible effect on the regeneration of mangroves. Hydrobiologia 347: 83–89 (7 pages).
DENR CENRO-Catanauan., (2003a). Coastal environment profile and coastal resource management plan of Catanauan, Quezon (Unpublished) (56 pages).
DENR CENRO-Catanauan, (2003b). Catanauan Quezon Municipal Profile. Comprehensive Land Use Plan of Catanuan. LGU – Catanuan (215 pages).
Diele, K.; Koch, V.; Paul, U.S., (2005). Population structure, catch composition and CPUE of the artisanally harvested mangrove crab Ucides cordatus (Ocypodidae) in the Caeté estuary, North Brazil: Indications for overfishing? Aquatic Living Res., 169-178 (10 pages).
English, S.C.; Wilkinson, V.; Baker (eds), (1994). Survey manual for tropical resources. Australian Institute of Marine Science, 175-183 (8 pages).
Field, C.D., (1996). Restoration of mangrove ecosystems. International Society for Mangrove Ecosystems, Okinawa, Japan.
Fondo, E.N.; Kimani, N.; Odongo, D.O., (2010). The status of mangrove mud crab fishery in Kenya, east Africa. Int. J. Fisheries Aquaculture, 2(3): 79-86 (8 pages).
Gilbert, A.J.; Janssen, R., (1998). Use of environmental functions to communicate the values of a mangrove ecosystem under different management regimes. Ecol. Econom. 25 (3), 323-346 (24 pages).
Hammer, O.; Harper, D.A.T.; Ryan P.D., (2001). PAST: Paleontological statistics software package for education and data analysis. Palaeontologia Electronica 4(1): 9 (248 pages).
Kairo, J. G.; Lang'at, J. K. S.; Dahdouh-Guebas, F.; Bosire, J. O.; Karachi, M., (2008). Structural development and productivity of replanted mangrove plantations in Kenya. Forest Ecol. Manage., 255: 2670-2677 (8 pages).
Kristensen, E.; Holmer, M.; Bussarawit, N., (1991). Benthic metabolism and sulfate reduction in a Southeast Asian mangrove swamp Mar Ecol. Prog. Ser. 73: 93–103 (11 pages).
Kristensen, E.; Jensen, M.H.; Banta, G.; Hansen, K.; Holmer, M.; King, G.M., (1998). Transformation and transport of inorganic nitrogen in sediments of a southeast Asian mangrove forest. Aquat Microb. Ecol.15: 165–175 (11 pages).
Lee, S.Y., (1998). Ecological role of grapsid crabs in mangrove ecosystems: A review. Mar. Freshwater. Res. 49, 335–343 (9 pages).
Lee, S.Y.; Kwok, P.W., (2002). The importance of mangrove species association to the population biology of the sesarmine crabs Parasesarma affinis and Perisesarma bidens. Wetlands Ecol. Manage. 10: 215–226 (12 pages).
Macintosh, D., (1984). Ecology and productivity of Malaysian mangrove crab populations (Decapoda:Brachyura). In: Soepadmo, E.,Rao, A.N., Macintosh, D. (Eds.), Proceeding of Asian Symposium Mangrove Environment: Research and Management. University of Malaya and UNESCO, Kuala Lumpur., 354–377 (24 pages).
Macintosh, D.J.; Ashton, E.C.; Havanon, S., (2002). Mangrove rehabilitation and intertidal biodiversity: a Study in the Ranong Mangrove Ecosystem, Thailand estuarine. Coastal Shelf Sci. 55: 331–345 (15 pages).
MacKenzie, R.A.; Bruland, G.L., (2012). Nekton communities in Hawaiian Coastal Wetlands: The distribution and abundance of introduced fish species. Estuar. Coasts 35: 212–226 (15 pages).
Macnae, W., (1968). A general account of the ﬂora and fauna of mangrove swamps and forests on the Indo-West-Paciﬁc region. Advances Marine Biol. 6: 73–270 (198 pages).
Moser, S.; Macintosh, D.; Laoprasert, S.; Tongdee, N., (2005). Population ecology of the mud crab Scylla olivacea: a study in the Ranong mangrove ecosystem, Thailand, with emphasis on juvenile recruitment and mortality. Fish Res., 71(1): 27-41 (15 pages).
Nagelkerken, I.; Faunce, C.H., (2007). Colonisation of artiﬁcial mangroves by reef ﬁshes in a marine seascape. Est. Coast. Shelf Sci. 75: 417–422 (5 pages).
Nagelkerken, I.; Blaber, S.J.M.; Bouillon, S.; Green, P.; Haywood, M.; Kirton, L.G.; Meynecke, J.O.; Pawlik, J.; Penrose, H.M.; Sasekumar, A.; Somerfield, P.J., (2008). The habitat function of mangroves for terrestrial and marine fauna: A review. Aquatic Botany 89: 155-185 (30 pages).
Neukermans, G.; Dahdouh-Guebas, F.; Kairo, J.; Koedam, N., (2007). Mangrove species and stand mapping in Gazi Bay; Kenya, using Quick-Bird satellite imagery, in: Mees, J. et al. (Ed.) VLIZ Young Scientists' Day, Brugge, Belgium 2 March 2007: Book of abstracts. VLIZ Special Publication, 39: (45 pages).
Primavera, J., (2000). Development and conservation of Philippine mangroves: Institutional Issues Ecological Economics 35: 91-106 (15 pages).
Satheeshkumar, P.; Anisa Khan, B., (2009). Seasonal variations in physico-chemical parameters of water and sediment characteristics of pondicherry mangroves. African J. Basic Appl. Sci., 1 (1-2): 36-43 (7 pages).
Smith, T.J.; Boto, K.G.; Frusher, S.D.; Giddins, R.L., (1991). Keystne species and mangrove forest dynamics- the influence of burrowing by crabs on soil nutrient status and forest productivity. Estuar. Coast Shelf Sci., 33: 419–432 (13 pages).
Steinke, T.D.; Naidoo, G.; Charles, L.M., (1983). Degradation of mangrove leaf and stem tissues in situ in Mgeni estuary, South Africa. In: Teas, H.J. (Ed.), Biology and Ecology of Mangroves. Junk, The Hagu., 141–149 (9 pages).
Thongtham, N.; Kristensen, E., (2005). Carbon and nitrogen balance of leaf-eating sesarmid crabs (Neoepisesarma versicolor) offered different food sources. Estuar. Coast. Shelf Sci., 65, 213–222 (10 pages).
Walton, M.; Le Vay, L.; Lebata, J.H.; Binas, J.; Primavera, J.H., (2006). Seasonal abundance, distribution and recruitment of mud crabs (Scylla spp) in replanted mangroves. Estuar. Coast. Shelf Sci., 66: 493- 500 (8 pages).
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