查询词典 habitats

Is a perennial hydrophytic species, whose typical habitats are fresh and brackish water area of swamp and r...

是禾本科多年生水生草本植物，其典型生境为淡水、含盐的沼泽或者湖边。

According to the distribution of species and amount, the author makes a PCA analysis to the different habitats. The analysis of hierarchical cluster to different habitat is according to the distribution of species. According to the results of the two ways of analysis and the factual condition of environment, the environment of Daqinggou is divided into 3 types of habitat that are described as the hygric plant community in the bottom of ditch, xerophytic plant community in the top of ditch and single type plant community.

以直翅目昆虫种类和数量的分布为属性对不同生境作PCA分析并以直翅目昆虫种类分布为属性作等级聚类分析，两种分析方法所得结果十分相似，结合分析结果和实际情况将大青沟7种不同生境分为3类，分别命名为沟底湿生植物群落，包括水曲柳植物群落、湖边湿地植物群落和稻田植物群落；沟上干早植物群落，包括沙丘草地和大果榆植物群落；单一型植物群落，包括人工针叶林植物群落和蒙古栋植物群落。

We suggest that biodiversity of Labeoninae fish in Pearl River can be resulted from divers habitats of Karstic area in Yunnan-Guizhou Plateau and Guangxi Province.

此外对分布于我国喀斯特区域的野鲮亚科鱼类的多样性等进行了有关进化生态学方面的初步研究。

The Institute was established in 1952 and carries out complex limnological studies on streams, rivers, and reservoirs with special attention to the structure of biocoenoses, relations between aquatic organisms and physico-chemical factors of their habitats, and anthropogenic alterations in inland-water ecosystems.

该研究所成立于1952年。主要致力于河流、水库的湖沼学研究，侧重研究生物群落结构、水生生物与其栖息地物化因子间的关系、以及内陆水域生态系统的人类起源等。

Based upon the ecoanatomical method, leaf anatomical characters of eleven populations of six evergreen species (Cyclobalanopsis glauca, C. myrsinaefolia, C. gracilis, Castanopsis sclerophylla, C. eyrei and Lithocarpus glaber) from the eastern subtropical area of China were analyzed and compared with SPSS, DCA and TWINSPAN. The results are: 1. Although the leaf structures of the eleven populations still belong to the mesophyll type, they all express the trend of xerophilization. 2. There are some differences in leaf anatomical characters among populations, species and genera, which occur as the results of their adaptation to different habitats. 3. Different leaf anatomical characters have different variations among populations, species and genera, of which leaf thickness and palisade tissue thickness (considered as ecological adaptation characters) have greater variation than sponge tissue thickness, lower cuticle thickness and lower epidermis thickness (as systematical evolution characters). 4. The leaves of C. sclerophylla and C. glauca with thicker lamina, palisade tissue and cuticle (a multilayered upper epidermis in C. sclerophylla) are thought to better adapt to their dry habitat. The leaves of C. eyrei with thicker sponge tissue, although characterized by a multlayered upper epidermis, adapt to their humid and warm habitat. The leaves of C. myrsinaefolia and C. gracilis characterized by a thinner lamina, a less palisade tissue and a moderate cuticle thickness adapt to the humid and cool habitat in a middle mountain.

选取亚热带东部替代分布明显的壳斗科6种常绿树种（青冈、小叶青冈、细叶青冈、苦槠、甜槠和石栎）的11个种群叶片进行生态解剖，并用SPSS， DCA和TWINSPAN比较分析，结果表明：①尽管6种11个种群叶的结构仍属中生叶型，但有着不同程度的趋旱适应；②叶的解剖性状在属间、种间和种群间均存在着不同程度的差异，这是它们适应各自生境的结果，青冈和石栎的种内差异较大，反映出它们对环境变化有较强响应能力；③叶片的不同解剖性状在属、种类和种群间的变化并不同步，其中叶片和栅栏组织厚度等性状差异突出，反映它们更易受环境的饰变，是生态适应性状，而海绵组织、下角质膜，特别是下表皮厚度等性状差异较小，显示出这些性状的稳定性，可以认为是系统演化性状；④苦槠、青冈具有较厚的叶片、栅栏组织、角质膜和发达输导和机械组织，苦槠还具有复表皮，表现出对旱化生境的适应；甜槠尽管具有复表皮和较厚的叶片，但这是海绵组织增厚的结果，是对中生生境的适应；小叶青冈和细叶青冈具有较薄的叶片和栅栏组织、角质膜厚度居中等特点，可能是对中山凉湿生境的适应。

We show that the melanistic K locus mutation in North American wolves derives from past hybridization with domestic dogs, has risen to high frequency in forested habitats, and exhibits a molecular signature of positive selection.

此研究报告的另一作者安德森表示，数千年以来，人类就已经培育出了黑色皮毛的家用狗。她说：&不过，如今，我们不仅看到野狗也有黑色皮毛，还发现黑色皮毛对狗非常有利。&

The contribution of soil microbiotic crusts to the diversity of insect species may be attributed to the facts that it stabilizes soil surface, improves soil environmental and there by provides suitable habitats and some food sources for the insects.

生物土壤结皮对荒漠昆虫多样性的贡献可能是由于稳定了土表、改善了植被系统中的土壤环境，为昆虫，特别是幼虫阶段提供相对适宜的土壤生境或部分食物来源。

We studied responses of populations of Microtus ochrogaster and M. pennsylvanicus in east-central Illinois, USA to supplemental food in intermediate and low food habitats. Whereas amplitudes of fluctuation of M.

本研究在美国伊利诺斯州中东部测定了中等食物质量和低食物质量栖息地内橙腹田鼠和草原田鼠(M.pennsylvanicus)种群对附加食物的响应。

Mikania micrantha is notorious for its strong ability to colonize in new habitats. Existing photosynthetic studies have mainly focused on leaves, and less on non-photosynthetic organs such as stems, roots, and reproductive organs.

薇甘菊因为其在新生境的强入侵能力而臭名昭著，有关其入侵的光合生理原因主要集中在叶片光合速率研究，而对非同化器官光合特性少见报道。

The aggressive South American climber, Mikania micrantha, and several species of African grasses have come to dominate considerable areas, but these were habitats already highly modified by humans.

具侵略性的南美攀缘植物薇甘菊及数种非洲草类已占据不少地方，但这些都是已承受巨大人为改变之地。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。