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ASSESSMENT OF THE SEAGRASS AND SEAWEED COMMUNITIES AND THEIR ASSOCIATED FAUNA IN THE INTERTIDAL AREA OF BARANGAY POBLACION, BOHOL, PHILIPPINES Camille P. Navales Orla! G. S"mam#$% &$se'$ D. ("ie)a &r. Mar* A Pa)a*$ Maria Eva P. Ca+es

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Assessment of the Seagrass and seaweed communities and their associated fauna in the Intertidal Area of barangay poblacion, Bohol, Philippines

Assessment of the Seagrass and seaweed communities and their associated fauna in the Intertidal Area of barangay poblacion, Bohol, Philippines

Camille P. NavalesOrland G. SumampongJosefino D. Quieta Jr. Mary Ann PatayonMaria Eva P. Cajes

Flora- species composition and percent coverAssociated fauna- class composition, density, frequency and importance valuelow tide on April 29, 2014Transect line-quadrat method- Saito and Atobe (1970)ABSTRACT

5 seagrass species:Thalassia hemprichii,Cymodocea rotundataHalodule pinifolia Halophila minor Enhalus acoroidesABSTRACT

23 seaweed species: Gracilaria arcuata, Gracilaria salicornia, Chlorodesmis hildebrandtii, Eucheuma denticulatum, Valonia aegagropela, Hydroclathrus clathratus, Spyridia filamentosa, Chaetomorpha crassa, Caulerpa racemosa, Galaxaura oblongata, Padina autralis, Entomorpha chlatrata, Chondria armata, Bornetella sphaerica, Enteromorpha intestinalis, Palisada patentiramea, Pandina minor, Chnospora implexa, Kappaphycus alvarezii, Ulva pertusa, Ulva reticulata and 2 unidentified Ulva.

ABSTRACT

7 marine associated faunal classes:DemospongiaeCrinoideaOphiuroideaCrustaceaEchinoideaGastropodaHolothuroideaABSTRACT

Seagrass species (rank)Thalassia hemprichii Cymodocea rotundata Halodule pinifoliaHalophila minorEnhalus acoroidesABSTRACT

Seaweed species: Station 1- Eucheuma denticulatum and Gracilaria salicornia Station2- Palisada patentiramea

Gracilaria salicornia the only seaweed species common to both stations.ABSTRACT

Echinoids and ophiuroids- highest importance valuewide range of food and regenerative abilitycrustaceans, holothuroids and crinoids -least importance value different survival needs and economic importanceABSTRACT

intertidal of littoral zone-between the highest high and lowest low tidesadapted to exposure to air or desiccation, as well as other types of stressmiddle intertidal zone of Barangay Poblacion, Baclayon- seagrass and seaweed communities and their associated faunaINTRODUCTION

. Seagrasses and seaweeds are the primary producers in the marine environment.9

marine flowering plantsBelongs to:Kingdom PlantaePhylum Magnoliophyta Class Liliopsida Subclass AlismatidaeSeagrasses

marine macroalgae subdivided into three (3) phylaRhodophyta (Red Algae), Chlorophyta (Green Algae), and Phaeophyta (Brown Algae).Seaweeds

The primary objective of this study is to assess the intertidal area of Barangay Poblacion, Baclayon, Bohol. Specifically it aims:to determine species composition and percentage cover of flora in the intertidal area of Barangay Poblacion, Baclayon, Bohol;to compare the species composition and percentage cover of flora in the selected intertidal areas of Poblacion, Baclayon, Bohol;Objectives of the Study

to determine the substrate types in the sampling area in the intertidal area of Barangay Poblacion, Baclayon, Bohol;to determine the epibenthic associated fauna, up to the class level, in the intertidal area of Barangay Poblacion, Baclayon, Bohol; andto solve for the density, relative density, frequency, relative frequency and importance value of the association fauna in the intertidal area of Barangay Poblacion, Baclayon, Bohol.

This study will serve as baseline information as to the species composition of seagrasses and seaweeds in Poblacion, Baclayon, Bohol

Importance of the Study

Scope -to assess the intertidal area of Barangay Poblacion, Baclayon, Bohol. seagrass and seaweed communities and their associated fauna in the area. Sampling - April 29 2014sampling method -transect line- quadrat method (Saito and Atobe, 1970) with some modifications. Substrate samples -to determine the type of substrateScope and Limitations of the Study

Substrate samples, seagrass and seaweed voucher specimens- were brought to the laboratory for substrate analysis and for identification, respectively (English et al., 1997).Identification keys:Field Guide to Common Mangroves, Seagrasses and Algae of the Philippines by Calumpong and Meez (1997)Field Guide and Atlas of the Seaweed Resources of the Philippines by Trono (1997)Biology of the Invertebrates by Pechenik (2011).

Study Site- Poblacion, BaclayonIntertidal area- mangrove, seagrass and seaweed communities. During low tide, gleaners collect sea urchins, shells and sea cucumbers for foodMATERIALS AND METHODS

Figure 1. Map of the Study Area. A. Philippines, B. Bohol, and C. Poblacion, Baclayon BoholMap of the Study Site

ABC

2 equal groups with 3 transect lines eachStation 1: sandy, widely covered by seagrasses with minimal seaweed coverage. associated fauna: brittle stars, sea cucumbers, gastropods, sea urchins, sponges, hemichordates and crustaceans.Station 2: mostly coarse sandy, moderate seagrass and seaweed cover. associated fauna: sea urchins, brittle stars and sea cucumbers.Study Stations

low tide on April 29, 2014Transect line-quadrat method by Saito and Atobe (1970)Sampling MethodFigure 2. Transect-line Quadrat Method (Saito and Atobe, 1974)Shoreline

100 cm100 cm25 cm25 cm100 m

ClassAmount of Substratum covered% Substratum coveredMidpoint %(M)51/2 to all50-1007541/4 to 25-5037.531/8 to 1/412.5-2518.7521/16 to 1/86.26-12.59.381Less than 1/16