鱼类聚集结构,多样性和对南科纳,夏威夷岛礁的控制
Atsuko Fukunaga1, Gregory P Asner1, Bryant W Grady1
1Center for Global Discovery and Conservation Science, Arizona State University, Hilo, Hawaii, United States of America.
PloS one
|July 6, 2023
概括
在夏威夷南科纳的珊瑚礁鱼群.
科学领域:
- 海洋生物学 海洋生物学
- 生态生态学 生态生态学
- 渔业科学 渔业科学
背景情况:
- 珊瑚礁鱼群受到息地复杂性,盆地构成以及渔业和污染等人类影响的影响.
- 夏威夷的南科纳岛拥有多样化的珊瑚礁息地和高珊瑚覆盖面,但对其鱼类组合的研究有限.
- 了解这些因素对于有效的珊瑚礁保护和管理至关重要.
研究的目的:
- 为了调查夏威夷南科纳的鱼群,并调查它们与环境变量之间的关系.
- 为了确定鱼类组合结构和奖杯群分布的关键驱动因素.
- 为该地区的珊瑚礁鱼提供全面的空间评估.
主要方法:
- 在2020-2021年期间,在南科纳的119个地点进行了鱼类聚集调查.
- 利用地理信息系统 (GIS) 层来处理环境数据:深度,度,珊瑚礁粗度,住房密度和谷底覆盖.
- 采用多变量和单变量分析来将鱼群与环境因素相关联.
主要成果:
- 鱼群主要由少数分布广泛的物种所主导.
- 组装结构与深度,珊瑚礁粗度和沙覆盖有显著的相关性.
- 一个节的模型确定了度,深度,住房密度,叶绿素-a和沙覆盖作为关键预测因素.
- 住房密度对鱼类的丰富性和丰富性产生了负面影响,特别是浏览器.
- 珊瑚礁的粗性对食草动物产生了积极的影响;活珊瑚覆盖支持了抓鱼和食珊瑚鱼.
结论:
- 环境因素,包括息地复杂性和人类发展,大大影响了南科纳的珊瑚礁鱼群.
- 住房密度对鱼类的多样性和丰富性构成威胁,特别是在某些食物营养群中.
- 这项研究为夏威夷珊瑚礁生态系统的未来研究和保护工作提供了有价值的基线数据.
相关概念视频
Diversity of Protists III
57
Rhizaria are a diverse group of unicellular protists characterized by their threadlike cytoplasmic extensions known as pseudopodia. These structures aid in both locomotion and feeding, giving Rhizaria an amoeboid appearance. Their amoeboid morphology once led to taxonomic confusion, but molecular phylogenetics has clarified their evolutionary placement and emphasized their shared use of pseudopodia despite divergent lineages.This clade comprises diverse lineages such as Chlorarachniophyta,...
57
Keystone Species
21.7K
Measures of species biodiversity, such as richness (i.e., the number of species present) and evenness (i.e., their relative abundance), describe an ecological community’s structure. Many factors affect community structure, including abiotic factors (e.g., sunlight and nutrients), disturbances (e.g., fire or flood), species interactions (e.g., predation or competition), and chance events (e.g., foreign species invasion). Certain species—such as keystone species—also play a...
21.7K
Diversity of Protists IV
45
Amoebozoa represent a diverse group of terrestrial and aquatic protists that utilize lobe-shaped pseudopodia for locomotion and feeding. This characteristic differentiates them from the Rhizaria, which possess threadlike pseudopodia. The primary classifications within Amoebozoa include gymnamoebas, entamoebas, and the plasmodial and cellular slime molds. Phylogenetic evidence indicates that Amoebozoa diverged from a lineage that ultimately gave rise to fungi and animals.Gymnamoebas and...
45
Diversity of Protists II
58
Alveolates are a group of organisms recognized by the presence of alveoli, which are cytoplasmic sacs located beneath the cell membrane. While their function remains uncertain, alveoli may help regulate water balance by controlling how much water enters and leaves the cell. In dinoflagellates, these structures may serve as armor plates. There are three major types of alveolates: ciliates, which move using cilia; dinoflagellates, which use flagella for movement; and apicomplexans, which are...
58
Diversity of Protists I
45
Excavata is a diverse group of protists that includes both chemoorganotrophic and phototrophic species, with some thriving in anaerobic environments. Among the key groups within Excavata are diplomonads and parabasalids, which are flagellated protists that lack mitochondria and chloroplasts. These microorganisms typically inhabit anoxic environments, such as the intestines of animals, where they exist either symbiotically or as parasites, relying on fermentation for energy production. Some...
45


