Shifts in the composition of terrestrial plant communities could have significant effects on freshwater zooplankton due to changes in the quality of inputs of terrestrially derived dissolved organic matter (DOM). Leachate from native red maple (RM) and invasive Amur honeysuckle (AH) were used to explore the effects of DOM source on survival and growth of juvenile Daphnia ambigua. Prior research with both terrestrial and aquatic organisms indicates that AH-derived DOM has negative effects. Comparing bioassays in the presence and absence of algae with no additional DOM, RM- or AH-derived DOM, RM had stronger negative effects on both Daphnia survival and growth while AH only decreased growth. The negative effects seen in the presence and absence of algae provided evidence for both indirect and direct effects due to phytotoxicity and plant secondary compounds, respectively. DOM source may play a key role in regulating consumers in aquatic ecosystems.

中文翻译：

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来自本地和入侵植物物种的溶解有机物对幼水蚤的生存和生长的影响

由于陆地来源的溶解有机物（DOM）的投入质量发生变化，陆地植物群落组成的变化可能对淡水浮游动物产生重大影响。来自天然红枫（RM）和侵入性阿穆尔金银花（AH）的渗滤液被用来研究DOM来源对水蚤幼体存活和生长的影响。先前对陆地和水生生物的研究表明，AH衍生的DOM具有负面影响。比较在有藻存在和不存在以及无其他DOM，RM或AH衍生DOM的情况下进行的生物测定，RM对水蚤均具有更强的负面影响生存和生长，而AH仅降低生长。在存在和不存在藻类的情况下，所见到的负面影响分别为由于植物毒性和植物次生化合物引起的间接和直接影响提供了证据。DOM来源可能在调节水生生态系统中的消费者方面发挥关键作用。