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首頁(yè)> 外文學(xué)位 >Caracterizacion temporal y espacial de la macroinfauna bentica tropical alrededor de jaulas sumergidas para el cultivo de peces en mar abierto (Spanish text).
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Caracterizacion temporal y espacial de la macroinfauna bentica tropical alrededor de jaulas sumergidas para el cultivo de peces en mar abierto (Spanish text).

機(jī)譯：熱帶底棲大型動(dòng)物區(qū)系在淹沒(méi)網(wǎng)箱周圍的時(shí)空特征，用于公海魚類養(yǎng)殖（西班牙文本）。

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With the purpose of determining if some effect exists on the tropical bentica community by the food introduction, the production of metabolic remainders of the fish and the food remainders like result of the aquaculture in open sea. A spatial and temporal characterization of the benthic macroinfauna was done in response to the installation of two cages for open ocean fish culture placed 28 m deep and located 3.2 km south of Isla Culebra, Puerto Rico. Bimonthly samplings (October 2002 to October 2003) were made to obtain sediment samples north, south, east, west and at center sites under each cage and in a control site. Nutrient concentration, organic matter content, and sediment texture were determined. The low nutrient concentration was constant over time and space; a significant increase in organic matter content was observed only in October 2003. The Shannon-Wiener Index indicated no significant change in the benthic community in relation to the impact of this system through the study year. The current speed (20-30 cm/s) and the associated fauna around the cages seem to play an important role avoiding pollution in the area selected for this type of aquaculture.
機(jī)譯：為了確定是否通過(guò)引入食物對(duì)熱帶底棲生物群落產(chǎn)生某種影響，魚類的代謝殘留物和食物殘留物的生產(chǎn)，如公海養(yǎng)殖的結(jié)果。對(duì)底棲大型動(dòng)物的時(shí)空特征進(jìn)行了響應(yīng)，即安裝了兩個(gè)網(wǎng)箱，用于放置深海28米，位于波多黎各島庫(kù)萊布拉島以南3.2公里處的開放式海洋魚類養(yǎng)殖。每?jī)蓚€(gè)月采樣一次（2002年10月至2003年10月），以獲取沉積物樣本，分別在北，南，東，西以及每個(gè)網(wǎng)箱下的中心地點(diǎn)和控制地點(diǎn)。確定營(yíng)養(yǎng)濃度，有機(jī)質(zhì)含量和沉積物質(zhì)地。低養(yǎng)分濃度在時(shí)間和空間上是恒定的；僅在2003年10月才觀察到有機(jī)物含量顯著增加。香農(nóng)-維納指數(shù)顯示，在整個(gè)研究年度中，底棲動(dòng)物群落與該系統(tǒng)的影響沒(méi)有明顯變化。目前的速度（20-30厘米/秒）和網(wǎng)箱周圍的相關(guān)動(dòng)物群似乎在避免為此類水產(chǎn)養(yǎng)殖選擇的區(qū)域造成污染方面起著重要作用。

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