中英双语澳大利亚海岸发现最高龄植物年龄或超4500岁

培训啦消息：进来有很多人在问中英双语澳大利亚海岸发现最高龄植物年龄或超4500岁问题，同学们都在谈论。那么中英双语澳大利亚海岸发现最高龄植物年龄或超4500岁详细内容是什么呢，下面就和小编一起来看一下吧。

about 4,500 years ago, a single seed – spawned from two different seagrass species – found itself nestled in a favourable spot somewhere in what is now known as Shark Bay, just off Australias west coast.

大约4500年前，一颗由两种不同海草孕育而成的种子在澳大利亚西海岸附近的鲨鱼湾找到了自己的栖身之地。

Left to its own devices and relatively undisturbed by human hands, scientists have discovered that seed has grown to what is now believed to be the biggest plant anywhere on Earth, covering about 200 sq km (77 sq miles, or about 20,000 rugby fields, or just over three times the size of Manhattan island).

自由生长，受人类影响很小。科学家发现，这一种子已经长成了现在被认为是地球上最大的植物，占地约200平方公里（77平方英里，或约20000个橄榄球场，或略高于曼哈顿岛的三倍）。

The species – a Posidonia australis, also known as fibre-ball weed or ribbon weed – is commonly found along the southern coastlines of Australia.

该物种是澳大利亚的一种，也被称为纤维球杂草或带状杂草，通常在澳大利亚南部海岸线发现。

But when scientists started looking for genetic differences in ribbon weed across the bay, they came across a puzzle.

但当科学家们开始寻找海湾另一边的带状杂草的基因差异时，他们遇到了一个难题。

Samples taken from sites that were 180 k.m. apart suggested there were not multiple specimens of Posidonia australis, but one single plant.

从相距180公里的地点采集的样本表明，并不是有多个澳大利亚狭叶珊瑚标本，而是一种单一的植物。

"We thought what the hell is going on here? said Dr Martin Breed, an ecologist at Flinders University.

我们想这到底是怎么回事？弗林德斯大学的生态学家马丁·布赖德博士说。

"We were completely stumped. Student researcher Jane Edgeloe, of the University of Western Australia (UWA), said about 18,000 genetic markers were examined as they looked for variations in the species that might help them select specimens for use in restoration projects.

这把我们难住了。西澳大利亚大学的学生研究员简·埃德格洛，说他们检查了大约18000个遗传标记，以寻找物种的变异，这些变异可能有助于他们选择用于修复项目的标本。

But what they found instead was that the same plant had spread using rhizomes in the same way that a lawn can spread from its edges by sending out runners.

但是他们发现，同一种植物通过根茎蔓延，就像草坪通过散发植物蔓从边缘蔓延一样。

"The existing 200 sq k.m. of ribbon weed meadows appear to have expanded from a single, colonising seedling," she said.

她说：现有的200平方公里的带状杂草草地似乎是从一株定植的幼苗蔓延而来的。

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