Bravo Gonzalo, Livore Juan Pablo, Battini Nicolás, Gastaldi Marianela, Lauretta Daniel, Brogger Martín, Raffo María Paula, Lagger Cristian, Bigatti Gregorio
Instituto de Biología de Organismos Marinos (IBIOMAR), CCT CONICET- CENPAT, Puerto Madryn, Argentina Instituto de Biología de Organismos Marinos (IBIOMAR), CCT CONICET- CENPAT Puerto Madryn Argentina.
Fundación ProyectoSub, Puerto Madryn, Argentina Fundación ProyectoSub Puerto Madryn Argentina.
Biodivers Data J. 2021 Dec 20;9:e72081. doi: 10.3897/BDJ.9.e72081. eCollection 2021.
Temperate rocky reefs in the SW Atlantic are productive areas that support highly diverse communities of invertebrates, algae and fishes. Rocky outcrops form complex structures which offer a diversity of microhabitats that lead to a great variety of co-existing species. Subtidal biodiversity within the Natural Protected Area Península Valdés is largely unexplored and studies are mainly limited to fish. A total of 560 high definition photoquadrats from seven rocky reefs (1-25 m depth) at Punta Pardelas were obtained during March 2019. In total, 4491 occurrences were recorded and identified to phyla (n = 2), superclasses (n = 1), classes (n = 5), subclasses (n = 2), orders (n = 2), families (n = 1), subfamilies (n = 1), genera (n = 10) and species (n = 43) levels. This dataset was developed to provide a baseline inventory of Punta Pardelas inside the Natural Protected Area, that was only partially reported more than 50 years ago. Such data represent the first step towards monitoring these less-accessible ecosystems.
Most of the available information about Atlantic Patagonian marine biodiversity is related to rocky intertidal communities or rocky reef fish communities. Despite having more than 4000 km of coastline, in the last 20 years only four studies have focused on subtidal benthic communities from shallow rocky reefs in Argentina (Genzano et al. 2011, Rechimont et al. 2013, Bravo et al. 2015, Bravo et al. 2020a). However, none of them described the epi-benthic community of different surface orientations on the rocky reefs. This dataset includes several surface orientations (i.e. horizontal, vertical, overhang and cave floor) and their microhabitats. We found almost double the number of taxa previously reported for the area. Through stratified sampling of different surface orientations, we recorded species that are often overlooked and thus registered as part of the existing biodiversity. For example, overhang surfaces in our study showed a unique assemblage and a great diversity of sponges. This work will be valuable as baseline information that is currently out of date in Nuevo Gulf rocky reefs.
西南大西洋的温带岩石礁是生产力较高的区域，支撑着由无脊椎动物、藻类和鱼类组成的高度多样化群落。岩石露头形成了复杂的结构，提供了多种多样的微生境，从而导致大量物种共存。瓦尔德斯半岛自然保护区内潮下带的生物多样性在很大程度上尚未得到探索，相关研究主要局限于鱼类。2019年3月，从蓬塔帕尔德拉斯的七个岩石礁（水深1 - 25米）获取了总共560个高分辨率照片样方。总共记录并鉴定到了门（n = 2）、总纲（n = 1）、纲（n = 5）、亚纲（n = 2）、目（n = 2）、科（n = 1）、亚科（n = 1）、属（n = 10）和种（n = 43）级别，共计4491个物种出现情况。该数据集旨在提供自然保护区内蓬塔帕尔德拉斯的基线清单，50多年前仅有部分相关报告。这些数据是监测这些难以进入的生态系统的第一步。
关于大西洋巴塔哥尼亚海洋生物多样性的现有信息大多与岩石潮间带群落或岩石礁鱼类群落有关。尽管拥有超过4000公里的海岸线，但在过去20年里，仅有四项研究聚焦于阿根廷浅岩石礁的潮下带底栖生物群落（Genzano等人，2011年；Rechimont等人，2013年；Bravo等人，2015年；Bravo等人，2020a）。然而，它们都没有描述岩石礁上不同表面朝向的表栖生物群落。该数据集包括几种表面朝向（即水平、垂直、悬垂和洞穴底部）及其微生境。我们发现该区域先前报告的分类单元数量几乎翻倍。通过对不同表面朝向进行分层抽样，我们记录了那些常被忽视的物种，并将其登记为现有生物多样性的一部分。例如，我们研究中的悬垂表面显示出独特的组合以及大量的海绵。这项工作作为新海湾岩石礁目前已过时的基线信息将具有重要价值。
