权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

Scientific Method, Stochastic Dynamics & Deterministic Forcing: Integrated Modelling, Field Research, & Educational Outreach to Understand Population Dynamics of the B

科学方法，随机动力学

基本信息

批准号：
9734472
负责人：
David Eggleston
金额：
$ 46.64万
依托单位：
North Carolina State University
依托单位国家：
美国
项目类别：
Continuing Grant
财政年份：
1998
资助国家：
美国
起止时间：
1998-06-15 至 2004-12-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=9734472&HistoricalAwards=false
关键词：
Scientific Method Stochastic Dynamics &amp

项目摘要

9734472 Eggleston Populations of animals and plants often fluctuate in a seemingly chaotic manner. Fundamental challenges include formulating population models that can tease apart the precise effects of different environmental forces on population dynamics, and determining the interaction between biological feedback mechanisms and the environment. This project addresses processes that determine population dynamics in the blue crab (Callinectes sapidus) in North Carolina, through comprehensive and integrated field observations and experiments, population modeling of long- term abundance data, and computer visualizations of water currents. The overall hypothesis is that environmental perturbations, primarily in the form of tropical cyclones, will markedly alter biological feedback mechanisms, producing large fluctuations in abundance of juvenile and adult crabs. The overall goal of the student/teacher enrichment program is to enhance scientific literacy, and involve students and teachers in the scientific method that have traditionally been under-represented in science, by linking public schools, state, and academic scientists together with a common research goal. Fisheries species are an ideal focal point since they are of significant cultural and economic importance to coastal counties, and lie at the center of such critical issues as overfishing, water quality degradation, and habitat loss.

埃格尔斯顿9734472的动植物种群经常以一种看似混乱的方式波动。根本的挑战包括建立种群模型，以梳理不同环境力量对种群动态的准确影响，以及确定生物反馈机制与环境之间的相互作用。该项目通过全面和综合的野外观察和实验、长期丰度数据的种群建模和水流的计算机可视化，研究了确定北卡罗来纳州蓝蟹(Callinectes Sapidus)种群动态的过程。总体假设是，环境扰动，主要是热带气旋的形式，将显著改变生物反馈机制，导致幼蟹和成年蟹数量的大幅波动。学生/教师丰富计划的总体目标是提高科学素养，并通过将公立学校、州政府和学术科学家联系在一起，将共同的研究目标联系起来，让学生和教师参与到科学方法中来，这些方法传统上在科学界的代表性不足。渔业物种是一个理想的焦点，因为它们对沿海国家具有重要的文化和经济意义，并处于过度捕捞、水质退化和栖息地丧失等关键问题的中心。