Exploring the temporal patterns of fish fauna caught along the mangrove fringes in Southern Guimaras, Philippines

Many marine species especially fish fauna access mangroves for temporary shelter, growth and development. They enter mangroves seasonally when the tide permits, while others are resident. To determine the underlying patterns, seasonal fluctuations of fish fauna and tidal influence in relation to the functional role of mangroves, this study explored the daily, monthly, and seasonal patterns in catch data of several fish corrals situated close to mangrove fringes in Southern Guimaras. The wings (mouth) of the fish corrals are located near a small channel or natural openings in the mangrove stands to be able to trap fish fauna when the tide goes out. Daily records of total catch from each 3-5 fish corrals (fisher-cooperators) were recorded from March 2011 to September 2013. The fish catch data and tidal records collected in the area were evaluated using time series and spectral analysis technique. Overall trend were relatively similar for two-year time series. Seasonal pattern follow an increasing trend towards the end of Northeast Monsoon to early mid-Southwest Monsoon but also connotes high catches in other months following spring tides. Further analysis of fish catch data and tidal influence were also discussed.