National Taiwan Ocean University Institutional Repository:Item 987654321/45371
English  |  正體中文  |  简体中文  |  Items with full text/Total items : 28611/40652
Visitors : 755036      Online Users : 52
RC Version 4.0 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
Scope Adv. Search

Please use this identifier to cite or link to this item:

Title: Effects of increasing nutrient supply and omnivorous feeding on the size spectrum slope: a size-based nutrient – phytoplankton - zooplankton model.
Authors: Pei-Chi Ho;Chun-Wei Chang;Chih Hao Hsieh;Fuh-Kwo Shiah;Takeshi Miki
Contributors: 國立臺灣海洋大學:海洋環境與生態研究所
Keywords: Feeding breadth;New nutrient flux;Non-equilibrium dynamics;Nutrient-phytoplankton-zooplankton model;Plankton size spectrum
Date: 2013-04
Issue Date: 2018-03-15T07:32:09Z
Publisher: Population Ecology
Abstract: Abstract:Size spectrum slope has been considered as an indicator for system productivity and size-dependent trophic interactions in plankton communities. We investigated the effect of new nutrient flux (N in ) and feeding breadth of zooplankton (σ2) on spectral slopes of the plankton community using a size-structured nutrient-phytoplankton-zooplankton model. We studied two types of plankton systems (1) at a steady state and (2) with fluctuating plankton populations. For the steady state systems, the spectral slopes increased with N in and σ2. In contrast, for the systems in fluctuation, spectral slopes constructed from long-term average plankton populations decreased with increasing N in and σ2. In addition to spectral slopes constructed from long-term average population densities, we investigated slope variability in systems with fluctuating plankton populations. The variability of spectral slopes was found to increase with N in and σ2, indicating that spectral slope variation is large in a eutrophic system or when zooplankton feed on a wide size range of prey. Empirically, because N in is difficult to measure, nutrient concentration is investigated instead. Our model predicts that the spectral slope is positively correlated with nutrient concentration due to the accumulated mesozooplankton biomass, which was confirmed by our study in plankton community in a subtropical reservoir in Taiwan.
Relation: 55(2) pp.247-259
Appears in Collections:[Institute of Marine Environment and Ecology] Periodical Articles

Files in This Item:

There are no files associated with this item.

All items in NTOUR are protected by copyright, with all rights reserved.


著作權政策宣告: 本網站之內容為國立臺灣海洋大學所收錄之機構典藏,無償提供學術研究與公眾教育等公益性使用,請合理使用本網站之內容,以尊重著作權人之權益。
網站維護: 海大圖資處 圖書系統組
DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - Feedback