Distribution of mesozooplankton biomass in the global ocean
Distribution of mesozooplankton biomass in the global ocean
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DOI：
10.5194/essd-5-45-2013
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发表时间：
2012-09
影响因子：
11.4
通讯作者：
R. Moriarty;T. O’Brien
中科院分区：
文献类型：
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作者：
R. Moriarty;T. O’Brien
摘要。在全球海洋的阳光层中，中浮游动物是世界性的。它们在远洋食物网中很重要，通过消耗浮游植物和微型浮游动物对初级生产有重要的反馈。在全球海洋的许多区域，它们也是海洋垂直粒子通量的主要贡献者。通过这两种方式，它们影响海洋中碳和其他营养物质的生物地球化学循环。然而，人们对它们的全球分布和生物量知之甚少。虽然文献中确实存在中浮游动物生物量的全球地图，但它们通常以手绘地图的形式存在，与这些地图相关的原始数据并不容易获得。该综合数据集自20世纪90年代末以来一直在开发中，是沿海和海洋浮游生物生态、生产和观测数据库（COPEPOD）的组成部分，现在也是更广泛的社区努力的一部分，以提供关键浮游生物功能类型的碳生物量数据的全球图景，特别是支持海洋生态系统模型的发展。从各种来源共收集了153 163个中浮游动物生物量值。其中2%最初记录为干质量，26%为湿质量，5%为沉降体积，68%为位移体积。利用文献中的各种非线性生物量转换，将数据从原始单位转换为碳生物量。然后使用深度积分值来计算中浮游动物全球生物量的估计值。全球200 m深度的上层浮游动物生物量平均值为5.9 μ C L−1，中位数为2.7 μ C L−1，标准差为10.6 μ C L−1。基于中位数，全球200米上层浮游动物的年平均估算值为0.19 Pg c。生物量在北半球最高，从两极海洋（40-90°）到温带地区（15-40°），两个半球的生物量都略有减少。热带（15°N-15°S）的值介于北温带和南温带之间。数据集可在doi:10.1594/PANGAEA获得。785501年。
Abstract. Mesozooplankton are cosmopolitan within the sunlit layers of the global ocean. They are important in the pelagic food web, having a significant feedback to primary production through their consumption of phytoplankton and microzooplankton. In many regions of the global ocean, they are also the primary contributors to vertical particle flux in the oceans. Through both they affect the biogeochemical cycling of carbon and other nutrients in the oceans. Little, however, is known about their global distribution and biomass. While global maps of mesozooplankton biomass do exist in the literature, they are usually in the form of hand-drawn maps for which the original data associated with these maps are not readily available. The dataset presented in this synthesis has been in development since the late 1990s, is an integral part of the Coastal and Oceanic Plankton Ecology, Production, and Observation Database (COPEPOD), and is now also part of a wider community effort to provide a global picture of carbon biomass data for key plankton functional types, in particular to support the development of marine ecosystem models. A total of 153 163 biomass values were collected, from a variety of sources, for mesozooplankton. Of those 2% were originally recorded as dry mass, 26% as wet mass, 5% as settled volume, and 68% as displacement volume. Using a variety of non-linear biomass conversions from the literature, the data have been converted from their original units to carbon biomass. Depth-integrated values were then used to calculate an estimate of mesozooplankton global biomass. Global epipelagic mesozooplankton biomass, to a depth of 200 m, had a mean of 5.9 μg C L−1, median of 2.7 μg C L−1 and a standard deviation of 10.6 μg C L−1. The global annual average estimate of mesozooplankton in the top 200 m, based on the median value, was 0.19 Pg C. Biomass was highest in the Northern Hemisphere, and there were slight decreases from polar oceans (40–90°) to more temperate regions (15–40°) in both hemispheres. Values in the tropics (15° N–15° S) were intermediate between those at the northern and southern temperate latitudes. Datasets available at doi:10.1594/PANGAEA.785501 .