Consider of water ecosystem protection and characteristics of ultrasonic technology, low frequency and low power ultrasonic especially suit to control algal growth in water body.

超声波的空化作用能够抑制藻类生长，从保护水体生态系统以及超声波技术本身的特点考虑，低频率、低功率的超声波更适合于水体抑藻应用。

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A study published in the December 2009 Ecological Applications shows that keeping more fish in the sea may give an ecosystem some protection against unwanted algae.

在2009年12月号生态学应用杂志上发表的一项研究显示海中鱼类增多可保护生态系统不受讨厌的海藻污染。

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Maritime security and protection of the fragile Arctic ecosystem will also be hot items on the agenda at the May 28 meeting.

海事安全和保护北极脆弱的生态环境也是5月28日会议议程的重要议题。

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Last week, she testified on Capitol Hill on behalf of Northern Rockies Ecosystem Protection Act or NREPA. If adopted, it would become the second largest wilderness expansion in U.S. history.

NPR: Rocky Mountain Activist Carole King

Freeh's report found an entire ecosystem built up around the protection of football.

WSJ: What Penn State Should Tear Down

Resources gained from the removal of harmful subsidies can then be used to create positive financial incentives for biodiversity protection, such as payment for ecosystem services schemes, whereby incentives are offered to landowners in exchange for managing their land to protect biodiversity and ecosystem services.

FORBES: The Future of Life On Earth: A Two-Part Discussion