Laboratory of Aquatic Communities Ecology, UNIVALI - Universidade do Vale do Itajaí, Rua Uruguai, 458, Centro Bloco 20 Sala 144, Caixa Postal 360, CEP 88302-202 Itajaí, SC, Brazil.
Mar Pollut Bull. 2011 Oct;62(10):2190-8. doi: 10.1016/j.marpolbul.2011.06.034. Epub 2011 Jul 27.
This study characterized the macrobenthos of Tijucas Bay and related the distribution and dominance patterns with historical trawling activities. Fifteen sampling sites were established in the bay and were sampled in summer and winter for the characterization of the macrobenthos. To evaluate the trawling effects, three passages were established at each site with control and impacted areas analyzed before and after trawl-net action in impacted area. Seasonal differences occurred in macrobenthos, possibly influenced by rainfall where the relative water level of the Tijucas River was directly associated with the discharge of freshwater and particulate matter. The associations identified in the bay were distinct in comparison with the Zimbros Embayment. The trawling assessment showed no significant variation in the macrobenthos after the trawl, possibly due to decades of shrimp exploitation in the bay. Trawling and instable environmental conditions inside the bay make the establishment of a stable macrobenthic community difficult.
本研究对蒂茹卡湾的大型底栖动物进行了特征描述，并将其分布和优势格局与历史拖网活动相关联。在海湾内设立了 15 个采样点，并在夏季和冬季对大型底栖动物进行了采样，以对其进行特征描述。为了评估拖网的影响，在每个站点的三个通道中建立了控制和受影响区域，并在受影响区域的拖网行动前后对其进行了分析。大型底栖动物在季节上存在差异，这可能受到降雨量的影响，蒂茹卡河的相对水位与淡水和颗粒物的排放量直接相关。与津布罗湾相比，海湾中的关联是明显不同的。拖网评估显示，拖网后大型底栖动物没有明显变化，这可能是由于几十年来在海湾中对虾类的开发。拖网和海湾内不稳定的环境条件使得建立稳定的大型底栖动物群落变得困难。
