megafauna

简明释义

英[/ˌmɛɡəˈfɔːnə/]美[/ˌmɛɡəˈfɔːnə/]

[动] 巨型动物

英英释义

单词用法

同义词

反义词

例句

1.Nor were all the strange creatures charismatic, mammalian megafauna.

但是，并不是所有奇怪的物种都是像哺乳动物一样是有灵性的。

2.If that dating is accurate, it would mean humans and megafauna coexisted in Australia for something like 20,000 years.

如果那个日期是准确的，那就意味着人类和巨型动物在澳大利亚共存了大约2万年。

3.Another example is the interaction of megafauna with local flora, in particular, plants that rely on animals to disperse their seeds.

另一个例子就是巨型动物和本地植物群的相互联系，尤其是那些仅依赖动物传播种子的植物。

4.The disappearance of megafauna in America—mammoths, saber-toothed cats, giant sloths, among others—happened relatively soon after the arrival of human beings, about 13,000 years ago.

美洲巨型动物的消失——猛犸象、剑齿猫、巨型树懒等等——发生在人类出现后不久，大约在一万三千年前。

5.Take a select group of animals, megafauna from places like Africa and Asia, and introduce them into other ecosystems similar to their current homes, beginning in the United States.

从非洲和亚洲等地挑选一群巨型动物，把它们引入到与它们现在的家园类似的其他生态系统中，首先从美国开始。

6.They were the ancient Australian megafauna—huge animals of the Pleistocene epoch.

它们是古代澳大利亚的巨型动物——更新世时期的巨型动物。

7.As a way of repairing some of that damage, a group of conservation biologists has proposed an ambitious, or some might say, a radical plan, involving large vertebrates, or, megafauna.

一群自然保护生物学家提出了一个雄心勃勃的计划——或者有人会说，这是一个激进的计划——即，把大型脊椎动物或巨型动物包含在计划中，作为修复部分损害的一种方法。

8.Actually, the proposal focuses on a particular subset of megafauna, the kind that lived during the Pleistocene epoch.

实际上，这个提案关注的是生活在更新世时期的巨型动物的一个特定子集。

9.The slow-moving behemoth had been crossing a volcanic plain 100,000 years ago, when megafauna still walked tall.

这种移动缓慢的庞然大物十万年前曾穿越维多利亚平原，那时巨型动物仍然盛行在大陆上。

10.The extinction of many species of megafauna 巨型动物 during the last Ice Age has fascinated scientists.

在上一个冰河时代，许多物种的巨型动物的灭绝让科学家们感到着迷。

11.Many fossils of megafauna 巨型动物 have been discovered in North America, providing insights into prehistoric life.

在北美发现了许多巨型动物的化石，为我们提供了史前生活的见解。

12.The study of ancient megafauna 巨型动物 helps us understand the ecological changes that have occurred over millennia.

对古代巨型动物的研究帮助我们理解数千年来发生的生态变化。

13.Some researchers believe that human hunting significantly contributed to the decline of megafauna 巨型动物 populations.

一些研究人员认为，人类狩猎显著导致了巨型动物种群的下降。

14.Australia is known for its unique megafauna 巨型动物, such as the Diprotodon, which resembled a giant wombat.

澳大利亚以其独特的巨型动物而闻名，例如与巨型袋熊相似的双孔兽。

作文

The term megafauna refers to the large animals that roamed the Earth during the Pleistocene epoch, which lasted from about 2.6 million to 11,700 years ago. This period was characterized by significant climatic changes and the presence of massive creatures that often captured the imagination of scientists and the general public alike. Some of the most well-known examples of megafauna include the woolly mammoth, the saber-toothed cat, and the giant ground sloth. These animals were not only impressive due to their size but also played crucial roles in their ecosystems.Understanding megafauna is essential for several reasons. Firstly, studying these large animals helps us comprehend the biodiversity of past ecosystems. The interactions between megafauna and their environment can provide insights into how ecosystems functioned and evolved over time. For instance, the grazing habits of large herbivores like the woolly mammoth could have influenced plant communities and landscape structures. Their migration patterns would have affected nutrient distribution, thus shaping the habitats of other species.Secondly, the extinction of megafauna raises important questions about the impact of climate change and human activities on biodiversity. Many scientists believe that the decline of these large species was a result of a combination of natural climatic shifts and hunting pressures from early humans. This dual threat highlights the fragility of ecosystems and the potential consequences of human actions. By examining the factors that led to the extinction of megafauna, researchers can draw parallels to current threats faced by modern wildlife, thereby emphasizing the importance of conservation efforts today.Moreover, the study of megafauna can inform us about the resilience of species in the face of environmental changes. Some megafauna species adapted to their changing surroundings, while others did not survive. Understanding the traits that allowed certain species to endure can help scientists predict how contemporary animals might respond to ongoing climate change. For example, species with high reproductive rates or those that can migrate long distances may be better equipped to cope with rapidly changing environments.In addition to their ecological significance, megafauna also hold cultural value. Throughout history, these magnificent creatures have been a source of inspiration for art, literature, and folklore. From cave paintings depicting mammoths to modern documentaries showcasing their lives, megafauna continue to fascinate people worldwide. This cultural connection emphasizes the importance of preserving not just the physical remnants of these animals, such as fossils, but also the stories and knowledge associated with them.In conclusion, the concept of megafauna encompasses more than just large prehistoric animals; it serves as a gateway to understanding ecological dynamics, the impact of human activity, and the cultural significance of our natural history. As we continue to explore the remnants of megafauna, we gain valuable insights that can guide us in our efforts to protect today's biodiversity and ensure a sustainable future for all species. The legacy of megafauna reminds us of the delicate balance within ecosystems and the responsibilities we hold towards preserving the planet's rich tapestry of life.

术语megafauna指的是在更新世时期（大约从260万年前到11700年前）游荡在地球上的大型动物。这一时期的特点是气候变化显著以及存在着许多巨大的生物，这些生物常常吸引了科学家和公众的想象力。一些最著名的megafauna例子包括毛象、剑齿虎和巨型树懒。这些动物不仅因其体型令人印象深刻，而且在其生态系统中扮演着重要角色。理解megafauna至关重要，原因有几个。首先，研究这些大型动物有助于我们理解过去生态系统的生物多样性。megafauna与其环境之间的相互作用可以提供有关生态系统如何运作和随时间演变的见解。例如，像毛象这样的巨大食草动物的吃草习惯可能会影响植物群落和景观结构。他们的迁徙模式会影响养分的分布，从而塑造其他物种的栖息地。其次，megafauna的灭绝引发了关于气候变化和人类活动对生物多样性影响的重要问题。许多科学家认为，这些大型物种的衰退是自然气候变化和早期人类狩猎压力结合的结果。这种双重威胁突显了生态系统的脆弱性以及人类行为可能带来的后果。通过研究导致megafauna灭绝的因素，研究人员可以找到与现代野生动物所面临的当前威胁之间的平行，从而强调当今保护工作的重要性。此外，研究megafauna还可以告知我们物种在面对环境变化时的韧性。一些megafauna物种适应了他们不断变化的环境，而另一些则未能幸存。理解使某些物种能够生存下来的特征，可以帮助科学家预测当代动物如何应对持续的气候变化。例如，繁殖率高或能够进行长途迁徙的物种可能更容易应对快速变化的环境。除了生态意义外，megafauna还具有文化价值。历史上，这些宏伟的生物一直是艺术、文学和民间传说的灵感来源。从描绘猛犸象的洞穴画到展示它们生活的现代纪录片，megafauna继续吸引着全世界的人们。这种文化联系强调了保存这些动物的物理遗迹（如化石）以及与之相关的故事和知识的重要性。总之，megafauna的概念不仅仅包含大型史前动物；它为理解生态动态、人类活动的影响以及我们自然历史的文化意义提供了一个入口。随着我们继续探索megafauna的遗迹，我们获得了有价值的见解，可以指导我们保护当今生物多样性的努力，并确保所有物种的可持续未来。megafauna的遗产提醒我们生态系统内的微妙平衡，以及我们在保护地球丰富生命之网中的责任。