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Exploring present and future carbon dynamics in connected mangrove forests and seagrass beds: How important is it?

探索相连的红树林和海草床当前和未来的碳动态：有多重要？

基本信息

批准号：
314115652
负责人：
Dr. Lucy Gillis, Ph.D.
金额：
--
依托单位：
Leibniz-Zentrum für Marine Tropenforschung (ZMT)
依托单位国家：
德国
项目类别：
Research Grants
财政年份：
2016
资助国家：
德国
起止时间：
2015-12-31 至 2020-12-31
项目状态：
已结题

来源：
https://gepris.dfg.de/gepris/projekt/314115652?language=en
关键词：
Exploring present future carbon dynamics

项目摘要

Recently carbon that has been retained within the coastal zone (blue carbon) has gained increasing interest by scientists and managers amongst other stakeholders. Ecosystems that retain carbon have great importance as a carbon sink and therefore may have implications for the global climate cycle. Tropical systems such as mangrove forests and seagrass beds, which are dominated by ecosystem engineers (organisms which physically modify environmental conditions thereby allowing for greater resource availability), are known to retain more carbon in their sediment than comparable terrestrial systems. Consequently these ecosystems may be especially important for both regional and global carbon cycling. However there is a dearth of knowledge on the driving forces of carbon donation and retention in mangrove forests and seagrass beds. At the landscape scale we want to establish the physical, biological and chemical drivers of spatial distribution of carbon sequestration, carbon supply and carbon dioxide (CO2) release from the sediment in the present and for the future. To achieve this we will monitor sites in four different global regions to gain an in-depth understanding of how carbon cycling changes across global latitudes. Firstly we will establish the spatial distribution of carbon rich particulate material within and between connected and isolated tropical coastal ecosystems, secondly, we will monitor CO2 release for different ecosystem configurations and relate this parameter to carbon accumulation. Thirdly, using incubations we hope to establish how a temperature gradient could affects CO2 release. Future understanding of CO2 release and carbon accumulation from mangrove and seagrass sediment is vital for understanding how the tropical coastal seascape may affect the global carbon cycle especially with climate induced temperature increases. This information can also be used as a critique of the carbon storage potential of tropical coastal vegetation. It is therefore anticipated that the data gained from this project could be expended in present and future scientific policy and ecosystems based management (EBM) in addition to enhancing our understanding of the underlying processes.

最近，保留在沿海地区的碳(蓝碳)越来越受到科学家和管理人员以及其他利益攸关方的关注。保留碳的生态系统作为碳汇具有非常重要的意义，因此可能对全球气候循环产生影响。众所周知，与类似的陆地系统相比，红树林和海草床等热带系统在其沉积物中保留了更多的碳，这些系统由生态系统工程师(物理上改变环境条件从而允许更大的资源可获得性的生物体)主导。因此，这些生态系统可能对区域和全球碳循环都特别重要。然而，关于红树林和海草床碳捐赠和碳保留的驱动力的知识匮乏。在景观尺度上，我们希望确定目前和未来沉积物中碳固定、碳供应和二氧化碳(CO2)释放的空间分布的物理、生物和化学驱动因素。为了实现这一目标，我们将对全球四个不同地区的站点进行监测，以深入了解全球纬度地区碳循环的变化。首先，我们将建立连接和孤立的热带海岸生态系统内部和之间的富碳颗粒物的空间分布，其次，我们将监测不同生态系统配置的二氧化碳排放，并将该参数与碳积累相关联。第三，我们希望通过培养来确定温度梯度如何影响二氧化碳的释放。未来对红树林和海草沉积物中二氧化碳释放和碳积累的了解对于了解热带沿海海景如何影响全球碳循环至关重要，特别是在气候引起的气温上升的情况下。这一信息也可以用来评价热带海岸植被的碳储存潜力。因此，预计从该项目获得的数据将用于目前和未来的基于科学政策和生态系统的管理(EBM)，此外还可以加强我们对基本过程的了解。