Bacteria-zooplankton interactions: a key to understanding bacterial dynamics and biogeochemical processes in lakes?

细菌-浮游动物相互作用：了解湖泊细菌动力学和生物地球化学过程的关键？

• 批准号: 201319348
• 负责人: Professor Dr. Hans-Peter Grossart
• 金额: --
• 依托单位: Abteilung 3: Plankton- und mikrobielle Ökologie
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2011
• 资助国家: 德国
• 起止时间: 2010-12-31 至 2014-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/201319348?language=en
• 关键词: Bacteria; zooplankton; interactions; key; understanding

Worldwide, metazoan zooplankton represents an enormous surface and biomass in pelagic systems but their linkage with bacteria has been assumed to be rather indirect (via nutrient cycling and trophic cascades). However, a zooplankter’s body carries a high abundance of diverse bacteria, which can account for a substantial fraction and diversity of pelagic bacteria. Zooplankton bodies are organic-rich micro-environments that support fast bacterial growth. Their physical-chemical conditions differ from those in the surrounding water and hence select for different bacterial communities. Until now, information on bacteria- zooplankton interactions is still limited to only a few zooplankton groups and environments, in particular copepods in coastal and estuarine waters. Therefore, our proposal focuses on bacteria-zooplankton interactions in lakes. Since zooplankton taxa can have very different life history traits we will compare a large number of zooplankton taxa in a variety of lakes. In field and lab studies we will investigate these interactions with a high spatial and temporal resolution. We will address 4 topics: A) spatial and temporal variations in bacteria-zooplankton association, B) microbial dynamics in the zooplankton gut microhabitat, C) bacterial dispersal by migrating zooplankton and D) effects on microbial activities during the mid-summer zooplankton decline. We aim to fundamentally change the way we understand pelagic food webs and the ecological role of bacteria-metazoan interactions.

在世界范围内，后生浮游动物代表了远洋系统中巨大的表面和生物量，但它们与细菌的联系被认为是相当间接的（通过营养循环和营养级联）。然而，浮游动物的身体携带大量不同的细菌，这可以解释。对于大部分和多样性的浮游动物来说，它们是富含有机物的微环境，支持细菌快速生长，其物理化学条件与周围的水和环境不同。到目前为止，有关细菌与浮游动物相互作用的信息仍然仅限于少数浮游动物群体和环境，特别是沿海和河口水域的桡足类，因此，我们的建议重点关注湖泊中的细菌与浮游动物相互作用。由于浮游动物类群可能具有非常不同的生活史特征，因此我们将在实地和实验室研究中比较各种湖泊中的大量浮游动物类群，我们将以高空间和时间分辨率研究这些相互作用。我们将讨论 4 个主题：A) 细菌-浮游动物关联的空间和时间变化，B) 浮游动物肠道微生境中的微生物动态，C) 浮游动物迁移引起的细菌扩散，D) 仲夏浮游动物减少期间对微生物活动的影响。我们的目标是从根本上改变我们理解远洋食物网以及细菌与后生动物相互作用的生态作用的方式。

项目成果

Zooplankton carcasses and non-predatory mortality in freshwater and inland sea environments

淡水和内海环境中的浮游动物尸体和非捕食性死亡率

• DOI: 10.1093/plankt/fbu014
• 发表时间: 2014-05-01
• 期刊: Journal of Plankton Research
• 影响因子: 2.1
• 作者: K. Tang;M. Gladyshev;O. P. Dubovskaya;G. Kirillin;H. Grossart
• 通讯作者: H. Grossart

Estimating In Situ Zooplankton Non-Predation Mortality in an Oligo-Mesotrophic Lake from Sediment Trap Data: Caveats and Reality Check

根据沉积物陷阱数据估算寡中营养湖中浮游动物非捕食死亡率：注意事项和现实检验

• DOI: 10.1371/journal.pone.0131431
• 发表时间: 2015
• 期刊: PLoS ONE
• 影响因子: 3.7
• 作者: Dubovskaya OP;Tang KW;Gladyshev MI;Kirillin G;Buseva Z;Kasprzak P;Tolomeev AP;Grossart HP
• 通讯作者: Grossart HP

Structure and function of zooplankton-associated bacterial communities in a temperate estuary change more with time than with zooplankton species

温带河口浮游动物相关细菌群落的结构和功能随时间的变化比浮游动物物种的变化更大

• DOI: 10.3354/ame01676
• 发表时间: 2014
• 期刊: Aquatic Microbial Ecology
• 影响因子: 1.4
• 作者: Bickel S.L.; Tang K.W.; Grossart H.P.
• 通讯作者: Grossart H.P.

Distinct Communities of Free-Living and Copepod-Associated Microorganisms along a Salinity Gradient in Godthåbsfjord, West Greenland

• DOI: 10.1657/1938-4246.45.4.471
• 发表时间: 2013-11-01
• 作者: Claudia Dziallas;H. Grossart;K. Tang;T. Nielsen
• 通讯作者: T. Nielsen

Ciliate Epibionts Associated with Crustacean Zooplankton in German Lakes: Distribution, Motility, and Bacterivory

德国湖泊中与甲壳类浮游动物相关的纤毛虫表生物：分布、运动性和食菌性

• DOI: 10.3389/fmicb.2012.00243
• 发表时间: 2012
• 期刊: Frontiers in Microbiology
• 影响因子: 5.2
• 作者: Bickel SL;Tang KW;Grossart HP
• 通讯作者: Grossart HP