Effects of Clonal Integration and Architecture on Plant Growth in Natural Resource Landscapes: Test of a Multiple Level Hypothesis in Ecology

克隆整合和结构对自然资源景观中植物生长的影响：生态学中多层次假设的检验

• 批准号: 9507497
• 负责人: Peter Alpert
• 金额: $ 24.57万
• 依托单位: University of Massachusetts Amherst
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1995
• 资助国家: 美国
• 起止时间: 1995-10-01 至 2000-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9507497&HistoricalAwards=false
• 关键词: Effects; Clonal; Integration; Architecture; Plant

Alpert 9507497 Clonal plants include some of the moat invasive, rapidly spreading, and persistent species known. They are also unique among plants in their capacities to place potentially independent units (ramets) non-randomly and to share resources among connected ramets. Two central hypotheses have been developed about clonal plants: (1) that integration among ramets confers significant advantages in habitats where resources are concentrated in small patches; and (2) differences in the degree of integration among clones reflect selection in response to different patterns of resource patchiness - i.e., clonal plants with a certain pattern of how ramets are placed and how they are integrated will be best adapted to an environment with a very specific distribution of light, water, nutrients, etc. Given the invasive potential of clonal plants, understanding the role of plant architecture in allowing the transfer of materials from patches where resources are abundant to patches where resources are limiting is critical in order to be able to predict and mitigate clonal plant invasions of natural or agricultural landscapes. The clonal herb, Fragaria Chiloensis, beach strawberry, is common in coastal sand dunes and grassland communities in Northern California where it plays an important ecological role. On dunes, the nitrogen fixing shrub, Lupinus arboreous, creates a landscape in which high light and soil nitrogen levels occur in different places. In grassland, Lupinus creates high soil nitrogen patches in a uniformly low light environment. In this study it will be determined whether: (1) connected ramets grow faster than unconnected ramets in the field due to resource sharing; and (2) differences in clonal architecture and the degree of sharing will vary between populations taken from dunes versus those from grasslands in a manner consistent with the patchiness of resources in those habitats..

Alpert 9507497克隆植物包括一些已知的护城河侵入性，迅速扩散和持续的物种。 它们在其能力的植物中也是独一无二的，可以将潜在的独立单位（Ramets）非随机放置，并在互联的公羊中共享资源。关于克隆植物的两个中心假设：（1）在资源集中在小斑块中的栖息地中，公羊之间的整合赋予了显着优势； （2）克隆之间整合程度的差异反映了对不同资源斑块的响应选择的选择 - 即具有一定模式的克隆植物，这些模式是某种模式的放置水杆的放置方式以及它们的整合方式，将最好地适应环境，并具有非常具体的光，水，水，养分等的特定分布。鉴于构图的作用，允许在构造的材料中构成构造的材料，从而使植物的作用是构造的，而这些植物的作用是构造的。为了能够预测和减轻自然或农业景观的克隆植物入侵至关重要。 克隆草药，fragaria chiloensis，海滩草莓在北加州北部的沿海沙丘和草地社区中很常见，在那里它起着重要的生态作用。 在沙丘上，氮固定灌木，卢比诺河腹膜，形成了一个景观，其中高光和土壤氮水平发生在不同的地方。 在草原，狼疮在均匀的低光环境中产生高土壤氮斑块。在这项研究中，将确定：（1）由于资源共享，连接的公羊的生长速度比现场的未连接的公寓快地生长； （2）克隆建筑的差异和共享程度在沙丘中获得的人群与草原的种群之间的差异将以与这些栖息地中资源弥补的方式不同。