Temperate urban wetland plankton community stability driven by environmental variables, biodiversity, and resource use efficiency: A case of Hulanhe Wetland

Abstract

In this study, we explored the driving factors behind plankton community structure. Due to the rapid development of cities, the occupation and development of wetland resources have increased lately, making the urban wetland ecosystems unstable and degrading the ecological functions gradually. Understanding the driving factors behind plankton community structure has certain theoretical and guiding significance for the protection, sustainable development, and ecological restoration of aquatic biodiversity in urban wetland ecosystems. We set up 12 sampling points in the Hulanhe Wetland, with the continuous monitoring of plankton from April to August and October 2021. The eco-environmental factors, plankton community structure, biodiversity index, resource use efficiency (RUE), and Bray–Curtis community turnover value were analyzed. A total of 209 species of 91 genera, 42 families, 11 classes, 22 orders of phytoplankton, and 90 species of four classes of zooplankton were identified. The community structure was mainly composed of Bacillariophyta, Chlorophyta, Cyanophyta, Protozoa, and Rotifera. To explore the correlation between phytoplankton and zooplankton, a correlation study was performed. We found a stable feeding preference between phytoplankton and zooplankton. The key influencing factors were identified by ordinary least squares regression, and the main driving factors of plankton community structure were discussed. The results showed that the stability of the Increased biodiversity and resource utilization efficiency have led to more stable plankton communities. This stability pattern is also strongly affected by water temperature, pH and total nitrogen in the external environment. This study will be helpful in the restoration of damaged wetlands, which would be beneficial for the protection of urban wetland ecosystems.

An Investigation of The Relationship Between Metamorphosable Characteristics and The Environment of The Lamprey (Anguilla Anguilla) Based on The Lotka-Volterra Model

“…The model fully considered the interaction between predator and prey, and the parasitic behavior of the seven-gill eel was also considered in this paper. The above system of equations leads to ) 𝛼(𝑅 + 𝐹) 2 (6)…”

“…environment quality and concluded that the results of zooplankton response to water quality evaluation were more accurate. By constructing a comparative judgment model of water environment-zooplankton and selecting more accurate evaluation indexes in the region, it helps to improve the accuracy of the indicator role of zooplankton on water ecosystems, and then reveals the response mechanism of zooplankton on water ecosystems [2].…”