This study was motivated by the data about a Rimapenaeus constrictus population from Ubatuba Bay, obtained in the 1990s, and by the establishment of a marine protected area (MPA) in the same region in 2008. We obtained comparable data about the distribution and abundance of this species collected 20 years apart, to evaluate the effectiveness of the MPA, for its preservation and possible changes in the populational profile. Biotic and abiotic data were obtained monthly, in September 1995–August 1996 (period 1 = 1ºP), and in September 2016–August 2017 (period 2 = 2ºP), from five transects within Ubatuba Bay. In total, 710 and 2,362 individuals were caught in the 1^oP and 2^oP, respectively. Despite this increase in abundance, aspects of the spatial distribution did not change substantially. The high abundance recorded at 5 m of depth was probably due to the creation of the MPA and to the accumulation of detritus at this depth. The high abundance seen in the transect sheltered from waves may be related to sediment heterogeneity, which was higher in this transect, and to the fact that this area is naturally protected from fisheries. In the 1ºP, the highest abundances were recorded in spring and summer, whereas in the 2ºP, they occurred in autumn and winter. This change may be explained by the entrance of the South Atlantic Central Water (SACW), which drives shrimps towards shallower areas. During the 2ºP, a fishing ban occurred in autumn (March 1st until May 31st), which is also when the SACW retreats and water temperature and salinity increase. These two factors combined may have been responsible for the increased shrimp abundance. In conclusion, both conservation practices (MPA and fishing ban) along with the existence of an area naturally protected from fisheries seem to have positively affected the population of R. constrictus, leading to an increase in abundance over the 20‐year interval.

中文翻译：

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从间隔20年的每月样本中比较the颈对虾Rimapenaeus constrictus（Stimpson，1874年）（甲壳纲，对虾）的时空分布：巴西东南部海洋保护区的影响

这项研究是基于1990年代从乌巴图巴湾获得的缩节梨纲种群的数据，以及2008年在同一地区建立海洋保护区（MPA）所推动的。我们获得了有关金枪鱼分布和丰度的可比数据。该物种相距20年收集一次，以评估MPA的有效性，保护和种群分布的可能变化。1995年9月至1996年8月（时段1 =1ºP）和2016年9月至2017年8月（时段2 =2ºP）每月从乌巴图巴湾的五个样带获取生物和非生物数据。在1 ^o P和2 ^o中总共捕获了710和2,362个人P分别。尽管丰度有所增加，但空间分布的各个方面并没有发生实质性变化。在5 m深度处记录的高丰度可能是由于MPA的产生以及该深度碎屑的积累。受波浪遮挡的样带中高丰度可能与沉积物异质性有关，后者在该样带中较高，并且与该地区自然受到渔业保护的事实有关。在1ºP中，最高丰度发生在春季和夏季，而在2ºP中，丰度发生在秋季和冬季。这种变化可以用南大西洋中央水域（SACW）的入口来解释，该区域将虾推向较浅的区域。在2ºP期间，秋季禁止捕鱼（3月1日至5月31日），这也是SACW撤退，水温和盐度增加的时候。这两个因素加起来可能是虾丰度增加的原因。总之，保护措施（MPA和捕鱼禁令）以及自然保护区不受渔业的影响似乎都对当地居民产生了积极影响。缩颈罗汉果，在20年的间隔内导致丰度增加。