浮游生物菌调节根据海洋密度的化
Stergios D Zarkogiannis1, James W B Rae2, Benjamin R Shipley1
1Department of Earth Sciences, University of Oxford, Oxford, UK.
Communications earth & environment
|August 4, 2025
概括
浮游生物的外密度与海水密度和息地深度相关. 这表明它们的化有助于浮力,并可能受到海洋稀释的影响,影响碳循环.
科学领域:
- 海洋生物学 海洋生物学
- 海洋学 海洋学 海洋学
- 生物地质化学生物地质化学
背景情况:
- 浮游生物对海洋碳循环至关重要.
- 它们的碳酸盐生产影响了海洋-大气二氧化碳交换和碳出口.
- 了解影响它们外特性的因素对于气候建模至关重要.
研究的目的:
- 为了研究浮游生物的外特征和环境参数之间的关系.
- 为了确定影响化变化的因素.
- 为了评估甲密度作为海水密度的代理的潜力.
主要方法:
- 三种浮游生物类动物的贝特征的比较.
- 对大西洋中部的一系列环境参数进行分析.
- 检查重量与息地深度的变化.
主要成果:
- 类化与海水密度和特定物种的息地深度有关.
- 的散装密度可以作为海水密度的代理.
- 贝重量随着息地深度的增加而增加,有助于浮力调节.
结论:
- 浮游生物中的化在浮力调节中起作用.
- 人类驱动的海洋密度减少 (海洋稀缺) 可能会对类产生影响.
- 类动物的变化可能对海洋碳循环产生重大影响.
相关概念视频
01:27Diversity of Protists III
128
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,...
128
01:21Skeleton and Calcium Homeostasis
4.8K
Calcium is not only the most abundant mineral in bone but also the most abundant mineral in the human body. Calcium ions are needed for bone mineralization, tooth health, heart rate regulation and strength of contraction, blood coagulation, the contraction of smooth and skeletal muscle cells, and the regulation of nerve impulse conduction. The average calcium level in the blood is about 10 mg/dL. When the body cannot maintain this level, a person will experience hypo or hypercalcemia.
4.8K
01:19Other Algae
89
The group Stramenopiles include some phototrophic microorganisms. Members of this group possess flagella covered in numerous short, hairlike extensions, a feature that inspired the group's name, derived from the Latin words for "straw" and "hair." Some of the main categories of Stramenopiles include diatoms, golden algae, and brown algae.Diatoms are unicellular, photosynthetic eukaryotes, with over 200 known genera. They play a key role in the planktonic communities of both marine and...
89
01:27Feedback Regulation of Calcium Concentration
3.5K
Calcium is an essential signaling molecule required for various cellular functions. Calcium pumps and ion channels on cell and organellar membranes, such as those on the endoplasmic reticulum (ER), regulate calcium concentrations inside the cell. They remain closed, keeping the cytosolic calcium levels low at a resting state.
Various transmembrane receptors, such as G protein-coupled receptors (GPCRs), elicit a response to extracellular signals by increasing cytosolic calcium. Activated GPCRs...
Various transmembrane receptors, such as G protein-coupled receptors (GPCRs), elicit a response to extracellular signals by increasing cytosolic calcium. Activated GPCRs...
3.5K
01:18The Bone Matrix
4.5K
Bone contains a relatively small number of cells entrenched in a matrix of collagen fibers that provide an adherent surface for inorganic salt crystals. Both components of the matrix, organic and inorganic, contribute to the unusual properties of bone. Without collagen, bones would be brittle and shatter easily. Without mineral crystals, bones would flex and provide little support. This can be observed by an experiment: when the minerals of a bone are dissolved by soaking the bone in...
4.5K
01:05Density and Archimedes' Principle
7.1K
When a lump of clay is dropped into water, it sinks. But if the same lump of clay is molded into the shape of a boat, it starts to float. Because of its shape, the clay boat displaces more water than the lump and experiences a greater buoyant force, even though its mass is the same. The same holds true for steel ships. The average density of an object majorly determines if the object will float. If an object's average density is less than that of the surrounding fluid, it will float. The...
7.1K