Academic Journal
Evaluating alternative explanations in ecosystem experiments. Ecosystems 1:335–344
| العنوان: | Evaluating alternative explanations in ecosystem experiments. Ecosystems 1:335–344 |
|---|---|
| المؤلفون: | Stephen R. Carpenter, Jonathan J. Cole, Timothy E. Essington, James R. Hodgson, Jeffrey N. Houser, James F. Kitchell, Michael L. Pace |
| المساهمون: | The Pennsylvania State University CiteSeerX Archives |
| المصدر: | http://www3.nd.edu/~underc/east/publications/documents/Carpenter_98Ecosys.pdf. |
| سنة النشر: | 1998 |
| المجموعة: | CiteSeerX |
| الوصف: | Unreplicated ecosystem experiments can be ana-lyzed by diverse statistical methods. Most of these methods focus on the null hypothesis that there is no response of a given ecosystem to a manipulation. We suggest that it is often more productive to compare diverse alternative explanations (models) for the observations. An example is presented using whole-lake experiments. When a single experimen-tal lake was examined, we could not detect effects of phosphorus (P) input rate, dissolved organic carbon (DOC), and grazing on chlorophyll. When three experimental lakes with contrasting DOC and food webs were subjected to the same schedule of P input manipulations, all three impacts and their interac-tions were measurable. Focus on multiple alternatives has important implications for design of ecosystem experiments. If a limited number of experimental eco-systems are available, it may be more informative to manipulate each ecosystem differently to test alter-natives, rather than attempt to replicate the experi-ment. |
| نوع الوثيقة: | text |
| وصف الملف: | application/pdf |
| اللغة: | English |
| Relation: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.517.130; http://www3.nd.edu/~underc/east/publications/documents/Carpenter_98Ecosys.pdf |
| الاتاحة: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.517.130 http://www3.nd.edu/~underc/east/publications/documents/Carpenter_98Ecosys.pdf |
| Rights: | Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
| رقم الانضمام: | edsbas.4032C359 |
| قاعدة البيانات: | BASE |
| الوصف غير متاح. |