The mesophotic zone of the marine protected area Espíritu Santo, Gulf of California, can function as a refuge for the ichthyofauna

IF 2.3 3区 地球科学 Q2 OCEANOGRAPHY Deep-Sea Research Part I-Oceanographic Research Papers Pub Date : 2024-06-21 DOI:10.1016/j.dsr.2024.104340
Patricia Silva-Montoya , Georgina Ramírez-Ortiz , Luis Eduardo Calderon-Aguilera
{"title":"The mesophotic zone of the marine protected area Espíritu Santo, Gulf of California, can function as a refuge for the ichthyofauna","authors":"Patricia Silva-Montoya ,&nbsp;Georgina Ramírez-Ortiz ,&nbsp;Luis Eduardo Calderon-Aguilera","doi":"10.1016/j.dsr.2024.104340","DOIUrl":null,"url":null,"abstract":"<div><p>Research on mesophotic reefs has increased thanks to technological advances such as remotely operated vehicles (ROV). The aim of this study was to evaluate differences in ichthyofaunal assemblages between shallow (&lt;30 m) and mesophotic (&gt;30 m) reef zones in three sites of the Parque Nacional zona marina del Archipiélago de Espíritu Santo (PNZMAES), a Marine protected area from the Gulf of California. To accomplish this objective, we used 14 video transects recorded with an ROV in October 2019 between 13 and 72 m depth. From these recordings, we determined species richness and abundance to analyze community structure and estimate biomass. A permutational multivariate analysis of variance was used to analyze differences between zones, sites, and their interaction. The abundance and estimated biomass of trophic groups were plotted to describe the trophic structure of the depth zones at PNZMAES. We also analyzed functional structure, functional richness (FRic), functional evenness (FEve), functional divergence (FDiv), functional specialization (FSpe), and functional originality (FOri) by depth zone and video transect based on six biological traits and estimated biomass. The taxonomic and functional indices were the response variables of linear models, while the explanatory variables were <em>in situ</em> temperature, light, and dissolved oxygen. At PNZMAES, 61 species were registered: 42 species in the shallow zone (high abundance and estimated biomass of planktivorous) and 40 species in the mesophotic zone (high abundance of planktivorous and high estimated biomass of piscivores). When comparing the ichthyofaunal community structure, differences were observed in richness, abundance, and estimated biomass associated with the depth zone, site, and the interaction of these variables. An overlap of more than 60% in the functional volume between zones was observed. Higher values of FRic, FDiv, and FSpe in the deep zone indicated that ecological functions were equivalent to those in the shallow zone. Finally, the linear models indicated an effect of environmental variables on the ecological indicators. The mesophotic reefs of PNZMAES are potential refuges for certain species (some of them endangered) and should be considered in the proposal of management strategies to protect them from future anthropogenic threats.</p></div>","PeriodicalId":51009,"journal":{"name":"Deep-Sea Research Part I-Oceanographic Research Papers","volume":"209 ","pages":"Article 104340"},"PeriodicalIF":2.3000,"publicationDate":"2024-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0967063724001109/pdfft?md5=3c4c696aba6ef9ebfc0743f946c86a2c&pid=1-s2.0-S0967063724001109-main.pdf","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Deep-Sea Research Part I-Oceanographic Research Papers","FirstCategoryId":"89","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0967063724001109","RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"OCEANOGRAPHY","Score":null,"Total":0}
引用次数: 0

Abstract

Research on mesophotic reefs has increased thanks to technological advances such as remotely operated vehicles (ROV). The aim of this study was to evaluate differences in ichthyofaunal assemblages between shallow (<30 m) and mesophotic (>30 m) reef zones in three sites of the Parque Nacional zona marina del Archipiélago de Espíritu Santo (PNZMAES), a Marine protected area from the Gulf of California. To accomplish this objective, we used 14 video transects recorded with an ROV in October 2019 between 13 and 72 m depth. From these recordings, we determined species richness and abundance to analyze community structure and estimate biomass. A permutational multivariate analysis of variance was used to analyze differences between zones, sites, and their interaction. The abundance and estimated biomass of trophic groups were plotted to describe the trophic structure of the depth zones at PNZMAES. We also analyzed functional structure, functional richness (FRic), functional evenness (FEve), functional divergence (FDiv), functional specialization (FSpe), and functional originality (FOri) by depth zone and video transect based on six biological traits and estimated biomass. The taxonomic and functional indices were the response variables of linear models, while the explanatory variables were in situ temperature, light, and dissolved oxygen. At PNZMAES, 61 species were registered: 42 species in the shallow zone (high abundance and estimated biomass of planktivorous) and 40 species in the mesophotic zone (high abundance of planktivorous and high estimated biomass of piscivores). When comparing the ichthyofaunal community structure, differences were observed in richness, abundance, and estimated biomass associated with the depth zone, site, and the interaction of these variables. An overlap of more than 60% in the functional volume between zones was observed. Higher values of FRic, FDiv, and FSpe in the deep zone indicated that ecological functions were equivalent to those in the shallow zone. Finally, the linear models indicated an effect of environmental variables on the ecological indicators. The mesophotic reefs of PNZMAES are potential refuges for certain species (some of them endangered) and should be considered in the proposal of management strategies to protect them from future anthropogenic threats.

查看原文
分享 分享
微信好友 朋友圈 QQ好友 复制链接
本刊更多论文
加利福尼亚湾圣埃斯皮里图海洋保护区的中嗜水区可作为鱼类的避难所
由于遥控潜水器(ROV)等技术的进步,对中生珊瑚礁的研究有所增加。本研究的目的是评估加利福尼亚湾海洋保护区圣埃斯皮里图群岛国家公园(PNZMAES)三个地点的浅礁(30 米)和中层礁(30 米)之间鱼类组合的差异。为了实现这一目标,我们在 2019 年 10 月使用遥控潜水器在 13 米至 72 米深度之间记录了 14 个视频横断面。通过这些记录,我们确定了物种丰富度和丰度,以分析群落结构和估算生物量。我们采用 permutational 多元方差分析来分析不同区域、地点之间的差异以及它们之间的相互作用。我们绘制了营养群丰度和生物量估算图,以描述 PNZMAES 深度区的营养结构。我们还根据六种生物特征和估计生物量分析了各深度区和视频剖面的功能结构、功能丰富度(FRic)、功能均匀度(FEve)、功能分化(FDiv)、功能特化(FSpe)和功能原始性(FOri)。分类指数和功能指数是线性模型的响应变量,而解释变量是现场温度、光照和溶解氧。在 PNZMAES,登记了 61 个物种:浅水区有 42 个物种(板食性鱼类丰度高,估计生物量大),中层水区有 40 个物种(板食性鱼类丰度高,估计食鱼生物量大)。在比较鱼类群落结构时,观察到丰富度、丰度和估计生物量的差异与深度区、地点以及这些变量的相互作用有关。各区之间的功能区重叠率超过 60%。深海区的 FRic、FDiv 和 FSpe 值较高,表明其生态功能与浅海区相当。最后,线性模型显示了环境变量对生态指标的影响。PNZMAES 的中生代珊瑚礁是某些物种(其中一些为濒危物种)的潜在庇护所,在提出 管理战略时应考虑保护它们免受未来人类活动的威胁。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 去求助
来源期刊
CiteScore
4.60
自引率
4.20%
发文量
144
审稿时长
18.3 weeks
期刊介绍: Deep-Sea Research Part I: Oceanographic Research Papers is devoted to the publication of the results of original scientific research, including theoretical work of evident oceanographic applicability; and the solution of instrumental or methodological problems with evidence of successful use. The journal is distinguished by its interdisciplinary nature and its breadth, covering the geological, physical, chemical and biological aspects of the ocean and its boundaries with the sea floor and the atmosphere. In addition to regular "Research Papers" and "Instruments and Methods" papers, briefer communications may be published as "Notes". Supplemental matter, such as extensive data tables or graphs and multimedia content, may be published as electronic appendices.
期刊最新文献
Nutrient fluxes, oxygen consumption and fatty acid composition from deep-water demo- and hexactinellid sponges from New Zealand The microbiome of the main deep-water scleractinian reef-framework engineers from the Southwestern Atlantic Morphospace of lanternfish larvae and their interplay with oceanographic conditions from the southeastern Pacific Ocean Editorial Board Influence of mini warm pool extent on phytoplankton productivity and export in the Arabian sea
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
已复制链接
已复制链接
快去分享给好友吧!
我知道了
×
扫码分享
扫码分享
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1