demersal

简明释义

英[dɪˈmɜːs(ə)l]美[dɪˈmɜːrsəl]

adj. 居于水底的

英英释义

单词用法

同义词

反义词

例句

1.Yellow porgy Taius tumifrons is a demersal fish with higher economic and admiring viewing values.

黄鲷是底栖性鱼类，具较高的经济价值和观赏价值。

2.Yellow porgy Taius tumifrons is a demersal fish with higher economic and admiring viewing values.

黄鲷是底栖性鱼类，具较高的经济价值和观赏价值。

3.The study focused on the behavior of demersal fish in their natural habitat.

这项研究专注于底栖鱼类在其自然栖息地中的行为。

4.Many species of demersal fish are vital for the ecosystem's health.

许多种类的底栖鱼类对生态系统的健康至关重要。

5.Fishermen often target demersal species because they are abundant in deeper waters.

渔民们常常以捕捞底栖物种为目标，因为它们在深水区很丰富。

6.The demersal fish population has been declining due to overfishing.

底栖鱼类的数量因过度捕捞而下降。

7.Research indicates that demersal fish play a crucial role in nutrient cycling.

研究表明，底栖鱼类在养分循环中发挥着至关重要的作用。

作文

The ocean is a vast and complex ecosystem that supports an array of life forms, each adapted to its unique environment. Among these life forms are various types of fish, which can be categorized based on their habitats. One important category is the demersal fish, which are species that live and feed on or near the bottom of the sea or ocean floor. Understanding the characteristics and behaviors of demersal fish is essential for both ecological studies and commercial fishing practices. Demersal fish include species such as cod, flounder, and haddock. These fish are typically found in deeper waters, where they can find ample food sources like crustaceans and other small marine animals that also inhabit the seabed. The adaptations of demersal fish, such as their flattened bodies and camouflaged coloring, allow them to blend into their surroundings, making it easier for them to ambush prey and evade predators. The ecological role of demersal fish is significant. They are not only predators but also prey for larger marine animals, creating a crucial link in the food web. By consuming smaller organisms, demersal fish help regulate the population of those species, contributing to the balance of the marine ecosystem. Furthermore, their feeding activities can influence the distribution of benthic organisms, which are crucial for maintaining the health of the ocean floor. From a commercial perspective, demersal fish are highly sought after due to their taste and nutritional value. Many fishing industries rely on the catch of demersal species to meet consumer demand. However, overfishing poses a significant threat to their populations, leading to concerns about sustainability. Effective management strategies are necessary to ensure that demersal fish stocks remain viable for future generations. This includes implementing catch limits, monitoring fish populations, and protecting critical habitats from destruction. In recent years, scientists have been researching the impact of climate change on demersal fish populations. Changes in water temperature, salinity, and oxygen levels can affect their distribution and breeding patterns. For instance, as ocean temperatures rise, some demersal species may migrate to cooler waters, potentially disrupting existing ecosystems and fishing practices. In conclusion, demersal fish play a vital role in marine ecosystems and human economies. Their unique adaptations and behaviors make them fascinating subjects of study in marine biology. As we continue to explore the depths of our oceans, understanding the significance of demersal fish will be crucial for both conservation efforts and sustainable fishing practices. Protecting these species and their habitats is essential for maintaining the health of our oceans and ensuring that future generations can enjoy the rich biodiversity that they offer.

海洋是一个广阔而复杂的生态系统，支持着各种生命形式，每种生命形式都适应于其独特的环境。在这些生命形式中，有各种类型的鱼类，它们可以根据栖息地进行分类。其中一个重要的类别是demersal鱼，即生活和觅食在海底或海洋底部附近的物种。理解demersal鱼的特征和行为对于生态研究和商业捕鱼实践都是至关重要的。 Demersal鱼包括鳕鱼、比目鱼和黑线鳕等物种。这些鱼通常在较深的水域中被发现，在那里它们可以找到丰富的食物来源，如甲壳类动物和其他小型海洋生物，这些生物也栖息在海床上。Demersal鱼的适应性，如扁平的身体和伪装的颜色，使它们能够融入周围环境，从而更容易伏击猎物并逃避捕食者。 Demersal鱼的生态角色非常重要。它们不仅是捕食者，而且是大型海洋动物的猎物，在食物链中创造了一个关键的联系。通过捕食较小的生物，demersal鱼帮助调节这些物种的数量，促进海洋生态系统的平衡。此外，它们的觅食活动可以影响底栖生物的分布，而底栖生物对于维持海洋底部的健康至关重要。 从商业角度来看，demersal鱼因其味道和营养价值而备受追捧。许多渔业依赖于捕捞demersal物种以满足消费者需求。然而，过度捕捞对其种群构成了重大威胁，导致人们对可持续性的担忧。有效的管理策略是确保demersal鱼种群在未来仍然可行的必要条件。这包括实施捕捞限制、监测鱼类种群以及保护关键栖息地免受破坏。 近年来，科学家们一直在研究气候变化对demersal鱼种群的影响。水温、盐度和氧气水平的变化会影响它们的分布和繁殖模式。例如，随着海洋温度的升高，一些demersal物种可能会迁移到更凉爽的水域，从而可能扰乱现有的生态系统和捕鱼实践。 总之，demersal鱼在海洋生态系统和人类经济中发挥着至关重要的作用。它们独特的适应性和行为使它们成为海洋生物学研究中引人入胜的主题。随着我们继续探索海洋深处，理解demersal鱼的重要性对于保护工作和可持续捕鱼实践至关重要。保护这些物种及其栖息地对于维护海洋的健康以及确保未来几代人能够享受它们所提供的丰富生物多样性是必不可少的。