Improving the ability to include freshwater wetland plants in process-based models
Autor: | S. Njambi Kahara, J.A. Shaffer, Mari-Vaughn V. Johnson, A.S. Williams, Gregory W. McCarty, J. R. Kiniry, Megan W. Lang, David M. Mushet |
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Rok vydání: | 2020 |
Předmět: |
Hydrology
geography geography.geographical_feature_category business.industry 0208 environmental biotechnology Soil Science Sampling (statistics) Wetland 02 engineering and technology 010501 environmental sciences Work in process 01 natural sciences 020801 environmental engineering Ecosystem services Agriculture Agricultural land Environmental science Ecosystem Functional group (ecology) business Agronomy and Crop Science 0105 earth and related environmental sciences Nature and Landscape Conservation Water Science and Technology |
Zdroj: | Journal of Soil and Water Conservation. 75:704-712 |
ISSN: | 1941-3300 0022-4561 |
Popis: | Considerable effort and resources have been placed into conservation programs designed to reduce or alleviate negative environmental effects of crop production and into evaluation of the benefits of these programs. Wetlands are an important source of ecosystem services, but modeling wetland plants is an emerging science. To date, wetland plant growth has not been explicitly accounted for in ecosystem service models that quantify conservation program effects. As part of an effort to more accurately simulate wetland plants within process-based models, we expanded upon plant growth data collected in an earlier effort with additional sampling at two of four previously sampled areas, and included a fifth sampling site. We then used data from the five sites spanning five years as wetland plant parameters at both the species and functional group levels for the Agricultural Land Management Alternative with Numerical Assessment Criteria (ALMANAC) model. In addition to individual species, modelers are interested in functional groups representing a collection of species because it is unrealistic to model every species occurring in an ecosystem. ALMANAC simulations were completed at three sites for both individual wetland plant species and functional groups. At each site, simulated plant yields were within 1 Mg ha−1 (±7%) of measured values (r2 = 0.99). Multisite species simulated yields were within 37% of measured values (r2 = 0.95). Functional groups performed as well as individual species simulations. Functional group simulated yields were within 1 Mg ha−1 (±5%) of measured yields. Plant growth is a major component of these wetland ecosystems, and ALMANAC verified wetland plant parameters support more accurate assessments of conservation programs and practices on the influence of wetland ecosystems embedded within agricultural fields. The improved plant parameters we provide here will be transferred to other process-based models that focus on other ecosystem components such as soil and water effects, facilitating wetland evaluations across the United States and elsewhere. |
Databáze: | OpenAIRE |
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