indicator species

Egret is a kind of widely distributed wetland water bird. Due to its high demands on the environment, it is an important indicator species of environmental quality.

白鹭是一种分布广泛的湿地水鸟，由于其对环境的要求较高，是环境质量的重要指示物种。

Butterfly is an important constituent part of biology resource, which has been suggested as potential indicator taxa to monitor ecosystems, habitat loss, non-native species invasion, fragmentation, and climate change.

蝶类是生物资源重要的组成部分，也是生物多样性研究与保护的重要类群，已经被公认为一种可以监控环境系统、生境破碎和丧失、外来物种入侵和气候变化的指示物种。

Spatial diversity index was cited to describe the wild life habitat pattern quantitatively. And the habitat pattern change of wild animals and red-crowned cranes ( Grus japonensis), as indicator species, between 1988 and 1998 was analyzed.

引用空间多样性指数（S d）对本区野生动物生境格局和指示物种丹顶鹤的生境格局进行了定量描述，并分析了其十年间的生境格局变化。

Great Gerbil ( Rhombomys opimus) is a typical desert rodent species in the desert and semi-desert habitats in central Asia, so it is regarded as one of the indicator species of Palaearctic desert and semi-desert.

大沙鼠（Rhombomys opimus）是中亚地区典型的荒漠啮齿动物，栖息于荒漠、半荒漠中，是古北区荒漠、半荒漠景观中生物多样性的指示物种之一。

The effects of different land-use scenarios on habitat suitability of indicator species in the Liaohe River Delta wetlands

辽河三角洲滨海湿地景观规划各预案对指示物种生境适宜性的影响

Tree Sparrow, Magpie, Great Spotted Woodpecker, Ring Dove and Hoopoe can be applied as indicator species to estimate the quality of the urban environment.

树麻雀、喜鹊、大斑啄木鸟、灰斑鸠、戴胜5种鸟可作为城市环境的指示物种。

Ardeidae bird is one of important species belonging to wet land ecosystem, and regarded as indicator for environmental assessment.

鹭科鸟类是湿地生态系统中重要的生物种类之一，也是环境质量评价的一类指示动物。

Well, you should care because they're an indicator species.

因为企鹅是一个具有指示功能的物种。

Ecological assessment of the Yangtze River eco-system with benthic invertebrate as indicator species

以底栖动物为指示物种对长江流域水生态进行评价

Current Status of Wintering Population of Black-faced Spoonbill in Haifeng Avian Natural Reserve, Guangdong, China Ardeidae bird is one of important species belonging to wet land ecosystem, and regarded as indicator for environmental assessment.

广东海丰鸟类自然保护区黑脸琵鹭越冬种群现状鹭科鸟类是湿地生态系统中重要的生物种类之一，也是环境质量评价的一类指示动物。