KF-metaweb: A trophic metaweb of freshwater ecosystems of South Korea (Version 1.1)

Motivation: The metaweb is a dictionary of nodes and their potential interactions developed for a particular region, focusing on a particular type of ecosystem. Based on the local biodiversity information at different spatial and temporal scales, the regional metaweb can be easily decomposed into local webs. The generated local webs are useful for understanding spatiotemporal variations in ecological interactions in a particular region. In this study, an attempt was made to develop a trophic metaweb for freshwater ecosystems in South Korea, called the KF-metaweb. The metaweb contains 22866 interactions between 446 taxa collected from 730 studies. This metaweb can be used to understand the spatiotemporal variability of different local food webs and the effects of the environment on food web properties. Furthermore, this is the first metaweb developed for any Asian ecosystem that contains information about many interactions that are unavailable in any other existing database. In addition, this metaweb study enriches our global understanding of ecological interactions.

Main types of variables contained: The data contained trophic interactions between resources (prey) and consumers (predators).

Spatial location and grain: The mainland of South Korea and Jeju Island.

Time period and grain: 2008–2021

Major taxa: Microalgae (belonging to the phyla Cyanobacteria, Bygra, Cryophyta, Myozoa, Ochrophyta, Charophyta, Chlorophyta, Euglenozoa, and Mycetozoa), zooplankton (belonging to the phyla Arthropoda and Rotifera), benthic macroinvertebrates (Platyhelmenthes, Annelida, Arthropoda, and Mollusca), and fish.

Level of measurement: Minimum taxonomic resolution was at the genus level for fish and benthic macroinvertebrates and order level for zooplankton and microalgae.

研究背景与动机：元食物网（metaweb）是针对特定区域、特定生态系统类型构建的节点及其潜在互作关系词典。基于不同时空尺度的本地生物多样性数据，该区域元食物网可便捷拆解为局地食物网。所生成的局地食物网有助于解析特定区域内生态互作的时空变化特征。本研究尝试构建韩国淡水生态系统的营养级元食物网，命名为KF-元食物网（KF-metaweb）。该元食物网包含来自730项研究的446个分类单元间的22866条互作关系。此元食物网可用于解析不同局地食物网的时空变异性，以及环境因子对食物网属性的影响。此外，这是首个针对亚洲生态系统构建的、包含大量现有数据库未收录互作信息的元食物网。本研究亦深化了我们对全球生态互作的认知。
数据包含的主要变量类型：该数据集涵盖资源（猎物）与消费者（捕食者）之间的营养级互作关系。
空间范围与采样粒度：韩国本土及济州岛。
时间跨度与采样粒度：2008年—2021年。
主要分类类群：微藻（涵盖蓝藻门（Cyanobacteria）、Bygra门、隐藻门（Cryophyta）、肌动物门（Myozoa）、定鞭藻门（Ochrophyta）、轮藻门（Charophyta）、绿藻门（Chlorophyta）、眼虫门（Euglenozoa）及黏菌门（Mycetozoa））；浮游动物（涵盖节肢动物门（Arthropoda）和轮虫动物门（Rotifera））；底栖大型无脊椎动物（涵盖扁形动物门（Platyhelmenthes）、环节动物门（Annelida）、节肢动物门及软体动物门（Mollusca））；以及鱼类。
测量精度：分类学分辨率最低标准为：鱼类与底栖大型无脊椎动物达到属级，浮游动物与微藻达到目级。