SUMBER-SUMBER MASUKAN DISSOLVED ORGANIC MATTER (DOM) DI TELUK MEKSIKO

Abstract

Penelitian ini bertujuan untuk mengetahui sumber-sumber masukan dissolved organic matter (DOM) di daerah West Pass, Teluk Meksiko. Sampel air diambil dari beberapa kedalaman pada lima lokasi berbeda, tegak lurus dari garis pantai. Konsentrasi dissolved organic carbon (DOC) dan total dissolved nitrogen (TDN) diukur dengan menggunakan DOC Analyzer yang dilengkapi dengan detektor nitrogen. Hasil analisis menunjukkan adanya dominasi masukan DOM dari Sungai Apalachicola. Namun, autochthonous DOM juga ditunjukkan dari hasil tersebut. Sedangkan data klorofil-a menunjukkan bahwa ada proses selain fotosintesis yang juga menghasilkan DOC di lokasi tersebut.

Kata-kata kunci: dissolved organic matter, dissolved organic carbon, total dissolved nitrogen, masukan.

Abstract: The objective of this research was to study the sources of dissolved organic matter (DOM) at West Pass, Gulf of Mexico. Water samples were collected from several depths on 5 different locations perpendicular to coastline. Dissolved organic carbon (DOC) concentration and total dissolved nitrogen (TDN) concentration were measured using DOC Analyzer equipped with nitrogen detector. Result shows that DOM on West Pass is dominated by freshwater input from Apalachicola River. However, autochthonous DOM is also reflected from the result. Meanwhile, chlorophyll-a data shows that there are other processes than photosynthesis produce DOC on that location.

Keywords: dissolved organic matter, dissolved organic carbon, total dissolved nitrogen, input