Strandings of marine mammals, sea turtles and seabirds along central Santa Catarina coast, Brazil, from 2015 to 2018.

To assess the potential impacts on seabirds, turtles and marine mammals from oil and gas production from the oceanic Pre-Salt province at Brazil’s Santos Basin, the Brazilian environmental agency (IBAMA) required PETROBRAS, the main oil company in the basin, to implement the “Programa de Monitoramento de Praias da Bacia de Santos” (Santos Basin Beach Monitoring Program - PMP-BS). Since 2015 PMP-BS has been operating along the states of Santa Catarina, Paraná, São Paulo and Rio de Janeiro, to collect biological data from live and dead stranded animals. This dataset comprises the first three years of monitoring (September 2015 to August 2018) along Santa Catarina state’s central coast, from 27°23'7.357" S 48°26'2.519" W to 27°50'24.231" S 48°33'48.706" W. During this period, 5497 animals of 46 species were recorded, 86.90% of which were dead and 13.10% alive when first observed This dataset represents the first high-intensity monitoring effort in the area and is essential to establish baselines for future work that seek to better understand the impacts of human activities on marine ecosystems.

Methods
This dataset represents the records of stranded animals made at PMP-BS’ Sector 3 (27°23’7.357” S 48°26’2.519” W and 27°50’24.231” S 48°33’48.706” W), in the state of Santa Catarina, including beaches at the Florianópolis county. The surveyed area includes 14 beaches, with a total extent of 43.58 Km. Beaches were monitored either daily (42.35 Km) or weekly (1.23 Km), preferentially in the morning. Additionally, a toll-free number was made available, so that local communities could inform of stranded animals. Records made during regular monitoring or by calls from the local public are separately identified in the data.

The data presented here describe animals recorded from 1 September 2015 to 31 August 2018. All animals observed during beach surveys were recorded. Depending on the decomposition stage, carcasses were either disposed of, or taken to the laboratory for necropsy. Animals that stranded alive and needed veterinary treatment were taken to rehabilitation centers maintained by the institutions part of the PMP-BS. Sex, development and maturation stage were identified using external characters or by direct examination of gonads during necropsy. All recovered carcasses were submitted to biometry. For fresh carcasses, samples were collected for histopathological analysis, natural history and any other analyses needed to identify the cause of death.

Taxonomic identification was usually done using morphologic characters, but when this was not possible owing to decomposition or predation, a molecular analysis was performed, by sequencing the COI gene and identification the species using the Barcode of Life Data System. Taxonomical classification follows the taxa retrieved from the Integrated Taxonomic Information System (ITIS) (http://www.itis.gov) on March 2016.

Specimens were collected under permit “ABIO No. 640/2015” from Instituto Brasileiro do Meio Ambiente e Recursos Naturais Renováveis – IBAMA.

为评估巴西桑托斯盆地洋域盐下（Pre-Salt）油气生产对海鸟、海龟及海洋哺乳动物的潜在影响，巴西环境署（IBAMA）要求该盆地主要石油企业巴西国家石油公司（PETROBRAS）实施“桑托斯盆地海滩监测计划（Santos Basin Beach Monitoring Program，简称PMP-BS）”。自2015年起，PMP-BS即在圣卡塔琳娜州、巴拉那州、圣保罗州及里约热内卢州沿岸开展系统性监测，收集搁浅活体与死亡动物的生物学数据。本数据集涵盖2015年9月至2018年8月前三年期间，圣卡塔琳娜州中部沿岸的监测数据，其地理范围为南纬27°23'7.357"、西经48°26'2.519" 至南纬27°50'24.231"、西经48°33'48.706"。此期间共记录46个物种的5497只动物，其中首次观测时为死亡个体占比86.90%，活体个体占比13.10%。本数据集为该区域首次高强度系统性监测成果，可为未来旨在深入解析人类活动对海洋生态系统影响的研究建立关键基线，具有重要科学价值。

方法
本数据集包含PMP-BS第3监测区段的搁浅动物记录，该区段地理范围为南纬27°23'7.357"、西经48°26'2.519" 至南纬27°50'24.231"、西经48°33'48.706"，覆盖圣卡塔琳娜州弗洛里亚诺波利斯县沿岸海滩。调查区域共包含14处海滩，总长度达43.58千米。其中42.35千米的海滩采用每日监测模式，1.23千米的海滩采用每周监测模式，监测时段优先选择晨间。此外，项目开通了免费热线，以便当地社区上报搁浅动物信息。常规监测与公众来电上报的记录在数据中分别标注。

本次公布的数据涵盖2015年9月1日至2018年8月31日期间的所有有效记录，海滩调查中发现的所有动物均被纳入统计。根据尸体腐败程度，工作人员会对其进行无害化处理或送至实验室开展尸检。搁浅活体且需要兽医救治的动物，则被送往PMP-BS合作机构运营的康复中心。通过外部形态特征或尸检时对性腺的直接检查，可确定动物的性别、发育及成熟阶段。所有回收的尸体均进行了生物测量。对于新鲜尸体，采集样本用于组织病理学分析、自然史研究及其他用于确定死因的相关检测。

分类学鉴定通常基于形态特征完成，但当因腐败或捕食导致无法通过形态鉴定时，则通过测序COI基因，并利用生命条形码数据系统（Barcode of Life Data System）进行物种识别。分类学分类遵循2016年3月从综合分类学信息系统（Integrated Taxonomic Information System, ITIS）（http://www.itis.gov）获取的类群标准。

所有标本采集均持有巴西环境与可再生自然资源研究所（IBAMA）颁发的许可文件“ABIO No. 640/2015”。