焦油球作为漂浮基板,用于长距离物种散播
Davy Barbosa Bérgamo1, Nykon Craveiro1, Karine Matos Magalhães2
1Universidade Federal de Pernambuco (UFPE), Centro de Tecnologia e Geociências (CTG), Departamento de Oceanografia (DOCEAN) - Laboratório de Bentos (LABEN), 50670-901 Recife, PE, Brazil.
Marine pollution bulletin
|October 15, 2023
概括
巴西海上的焦油球携带着海洋生物,可能会在海洋中传播物种. 这项研究估计了它们的起源和旅行距离,突出了生态风险.
科学领域:
- 海洋生物学 海洋生物学
- 海洋学 海洋学 海洋学
- 环境科学 环境科学
背景情况:
- 焦油球最近影响了巴西大陆架沿线的热带海.
- 海洋循环模式影响这些海洋污染物的分布.
研究的目的:
- 为了分析巴西东北部海岸收集的焦油球的组成和来源.
- 评估焦油球作为海洋物种分散的载体的潜力.
主要方法:
- 来自巴西海的焦油球的收集和分析 (2022年8月至9月).
- 识别和测量相关的海洋生物,主要是鱼 (Lepas anserifera).
- 使用鱼生长率和海洋电流数据 (南方赤道电流 - SEC) 估计焦油球的旅行时间和距离.
主要成果:
- 大约90%的分析的焦油球被海洋生物所殖民,包括鱼,多叶虫,十足动物和藻类.
- 龙 (Lapas anserifera) 是主导的物种,其头骨大小从0.32到22.21毫米不等.
- 预计2022年7月至8月的焦油球旅行时间,覆盖最大距离为1938.82公里,可能起源于中大西洋山脊附近的国际水域.
结论:
- 焦油球用作长途传播海洋物种的艇.
- 这些发现表明引入非本地物种和相关生态影响的潜在风险.
- 由于石油污染和生物入侵的双重威胁,需要加强监测和意识.
相关概念视频
01:27Diversity of Protists III
31
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,...
31
01:11Buoyancy and Stability for Submerged and Floating Bodies
1.8K
In fluid mechanics, buoyancy and stability are key concepts for understanding the behavior of submerged and floating bodies. When a stationary body is fully or partially submerged in a fluid, the fluid exerts a force on the body known as the buoyant force. This force acts vertically upward through a point called the center of buoyancy, which is the center of the displaced fluid volume. According to Archimedes' principle, the magnitude of the buoyant force is equal to the weight of the fluid...
1.8K
00:54Distribution and Dispersion
21.8K
To understand intra-specific interactions in populations, scientists measure the spatial arrangement of species individuals. This geographic arrangement is known as the species distribution or dispersion. Highly territorial species exhibit a uniform distribution pattern, in which individuals are spaced at relatively equal distances from one another. Species that are highly tied to particular resources, such as food or shelter, tend to concentrate around those resources, and thus exhibit a...
21.8K
00:53Migration
7.9K
Migration is long-range, seasonal movement from one region or habitat to another. This common strategy, carried out by many different organisms around the world, is an adaptive response that typically corresponds to changes in an organism’s environment, like resource availability or climate. Migrations can involve huge groups of thousands of animals as well as single individuals traveling alone and can range from thousands of kilometers to just a few hundred meters.
7.9K
01:07Speciation Rates
21.2K
Overview
21.2K
02:12Short-distance Transport of Resources
16.1K
Short-distance transport refers to transport that occurs over a distance of just 2-3 cells, crossing the plasma membrane in the process. Small uncharged molecules, such as oxygen, carbon dioxide, and water, can diffuse across the plasma membrane on their own. In contrast, ions and larger molecules require the assistance of transport proteins due to their charge or size. Transport across membranes also occurs within individual cells, playing a variety of essential roles for the plant as a whole.
16.1K