ABSTRACT: Quantifying how much carrion is produced temporally and spatially in ecosystems is considered one of the most important aspects of carrion ecology. Marine-derived inputs transferred from the ocean to terrestrial ecosystems are the principal source of energy and biomass for many coastal ecosystems. Here, we provide a comprehensive quantification of the carrion biomass of marine tetrapods across space and time at the ocean-land interface on the Brazilian coastline. Based on 3 large datasets, we estimated carrion biomass of 57274 marine tetrapods beached along 1980 km of coastline over a 3 yr period (2016-2019). A total of 1744986 kg of carrion biomass was estimated from 76 species, ranging from a total of 30 g to 14082 kg for each species. The 10 most abundant species accounted for 91.78% of total records but only 21.28% of total estimated biomass. We highlight the importance of both migratory and resident marine tetrapods as a predictable resource for the Brazilian coastline, especially in the winter and spring. Although baleen whales contributed higher values of carrion biomass, their true availability as a food source is affected by management procedures adopted after stranding events. A significant amount of carrion biomass is removed every year from the Brazilian coastal system. It is therefore imperative to assess the impacts of management procedures on the ecology of scavengers and the entire coastal system.

中文翻译：

---

巴西南部海岸线海陆界面海洋四足动物腐肉生物量的时空格局

摘要：量化生态系统中时间和空间产生多少腐肉被认为是腐肉生态学最重要的方面之一。从海洋转移到陆地生态系统的海洋衍生投入是许多沿海生态系统的主要能源和生物量来源。在这里，我们对巴西海岸线海陆交界处海洋四足动物的腐肉生物量进行了全面量化。基于 3 个大型数据集，我们估计了 3 年（2016-2019 年）沿 1980 公里海岸线搁浅的 57274 只海洋四足动物的腐肉生物量。从 76 个物种中估计总共有 1744986 公斤的腐肉生物量，每个物种的总重量从 30 克到 14082 公斤不等。10种最丰富的物种占总记录的91.78%，但只有21种。估计总生物量的 28%。我们强调了迁徙和常驻海洋四足动物作为巴西海岸线可预测资源的重要性，尤其是在冬季和春季。尽管须鲸提供了更高的腐肉生物量值，但它们作为食物来源的真正可用性受到搁浅事件后采用的管理程序的影响。每年从巴西沿海系统中清除大量腐肉生物量。因此，必须评估管理程序对清道夫生态和整个沿海系统的影响。它们作为食物来源的真实可用性受到搁浅事件后采用的管理程序的影响。每年从巴西沿海系统中清除大量腐肉生物量。因此，必须评估管理程序对清道夫生态和整个沿海系统的影响。它们作为食物来源的真实可用性受到搁浅事件后采用的管理程序的影响。每年从巴西沿海系统中清除大量腐肉生物量。因此，必须评估管理程序对清道夫生态和整个沿海系统的影响。