Department of Environmental Science, Institute for Water and Wetland Research, Radboud University Nijmegen, Heyendaalseweg 135, 6525 AJ, Nijmegen, The Netherlands.
Department of Aquatic Ecology and Environmental Biology, Institute for Water and Wetland Research, Radboud University Nijmegen, Heyendaalseweg 135, 6525 AJ, Nijmegen, The Netherlands.
Mar Pollut Bull. 2014 Dec 15;89(1-2):481-486. doi: 10.1016/j.marpolbul.2014.09.003. Epub 2014 Sep 23.
Seagrass beds are globally declining due to human activities in coastal areas. We here aimed to identify threats from eutrophication to the valuable seagrass beds of Curaçao and Bonaire in the Caribbean, which function as nursery habitats for commercial fish species. We documented surface- and porewater nutrient concentrations, and seagrass nutrient concentrations in 6 bays varying in nutrient loads. Water measurements only provided a momentary snapshot, due to timing, tidal stage, etc., but Thalassia testudinum nutrient concentrations indicated long-term nutrient loads. Nutrient levels in most bays did not raise any concern, but high leaf % P values of Thalassia in Piscadera Bay (∼0.31%) and Spanish Water Bay (∼0.21%) showed that seagrasses may be threatened by eutrophication, due to emergency overflow of waste water and coastal housing. We thus showed that seagrasses may be threatened and measures should be taken to prevent loss of these important nursery areas due to eutrophication.
由于沿海地区的人类活动，海草床在全球范围内不断减少。我们旨在确定富营养化对加勒比地区库拉索岛和博奈尔岛有价值的海草床的威胁，这些海草床是商业鱼类的育苗栖息地。我们记录了 6 个海湾的表层和孔隙水营养浓度以及海草的营养浓度，这些海湾的营养负荷各不相同。由于时间、潮汐阶段等因素，水质测量仅提供了一个瞬间的快照，但塔希利亚测试杜宁的营养浓度表明了长期的营养负荷。大多数海湾的营养水平没有引起任何担忧，但皮斯卡德拉湾（约 0.31%）和西班牙水湾（约 0.21%）的塔希利亚叶 %P 值较高，表明由于废水和沿海住房的紧急溢洪，海草可能受到富营养化的威胁。因此，我们表明海草可能受到威胁，应采取措施防止这些重要的育苗区因富营养化而丧失。
