在珊瑚礁渔业中,营养素生产的热量分布
James P W Robinson1, Emily S Darling2,3, Eva Maire1
1Lancaster Environment Centre, Lancaster University, Lancaster LA1 4YQ, UK.
Proceedings. Biological sciences
|October 3, 2023
概括
珊瑚礁渔业提供了必需的营养. 专注于食草鱼及其营养生产率可以帮助维持对热带粮食安全至关重要的捕捞.
科学领域:
- 海洋生物学 海洋生物学
- 渔业 科学 渔业 科学
- 营养生态学 营养生态学
背景情况:
- 珊瑚礁渔业对于热带地区的粮食安全至关重要,提供营养丰富的海鲜.
- 目前的渔业管理往往侧重于总生物量,忽视了个体生长和营养含量,这限制了营养丰富的鱼类的可持续产量.
- 了解珊瑚礁鱼的营养生产率对于有效管理至关重要.
研究的目的:
- 开发和评估一种用于评估珊瑚礁鱼类营养生产力的新型指标.
- 检查珊瑚礁鱼类食物网的营养生产率,跨越不同的捕捞压力和谷底构成.
- 为渔业管理策略提供信息,以维持营养丰富的捕捞.
主要方法:
- 模拟的生长系数和营养度被用来创建鱼类营养生产力的新指标.
- 在四个热带国家进行了珊瑚礁鱼群的水下视觉调查,以评估该指标.
- 鱼类丰度数据与生长和营养数据相结合,以评估食物网营养素的生产.
主要成果:
- 种类的生长系数与尺寸依赖的营养素 (,铁,,) 相相关,而不是总的营养密度.
- 发现草食物种主导着珊瑚礁的站立生物量,生物量周转和营养生产.
- 这些营养物质的热带分布在不同的捕捞压力和盆地构成中保持一致.
结论:
- 优先考虑食草动物和其他低营养水平物种的管理策略可以增强来自珊瑚礁渔业的可持续生物质和营养素生产.
- 维持食草动物种群对于维持珊瑚礁渔业的营养产量至关重要.
- 有效的管理可以支持热带沿海社区超过5亿人的粮食安全.
更多相关视频
09:31Author Spotlight: Advancing Coral Research by Exploring Climate Change Resistance, Ex Situ Aquaculture, and Reproduction Strategies
Published on: June 23, 2023
1.4K
05:04Author Spotlight: Understanding Riverine Nitrogen Impacts and Primary Productivity for Effective Nutrient Management
Published on: July 14, 2023
428
相关概念视频
01:06Primary Production
23.7K
The total amount of energy acquired by primary producers in an ecosystem is called gross primary production (GPP). However, of this energy, producers use some for metabolic processes, and some is lost as heat, decreasing the amount of energy available to the next trophic level. The remaining usable amount of energy is called the net primary productivity (NPP). In terrestrial ecosystems, NPP is driven by climate, while light penetration and nutrient availability drive NPP in aquatic ecosystems.
23.7K
00:46Trophic Efficiency
20.6K
Trophic level transfer efficiency (TLTE) is a measure of the total energy transfer from one trophic level to the next. Due to extensive energy loss as metabolic heat, an average of only 10% of the original energy obtained is passed on to the next level. This pattern of energy loss severely limits the possible number of trophic levels in a food chain.
20.6K
01:35Trophic Levels
30.9K
All organisms in an ecosystem occupy a trophic level in the food chain. The lowest level consists of primary producers, which synthesize their food from either solar or chemical energy. Each subsequent level obtains energy from the levels below. Detritivores can occupy any of the levels above primary producers.
30.9K
01:27Diversity of Protists III
42
Rhizaria are a diverse group of unicellular protists characterized by their threadlike cytoplasmic extensions known as pseudopodia. These structures aid in both locomotion and feeding, giving Rhizaria an amoeboid appearance. Their amoeboid morphology once led to taxonomic confusion, but molecular phylogenetics has clarified their evolutionary placement and emphasized their shared use of pseudopodia despite divergent lineages.This clade comprises diverse lineages such as Chlorarachniophyta,...
42
01:27Diversity of Protists II
33
Alveolates are a group of organisms recognized by the presence of alveoli, which are cytoplasmic sacs located beneath the cell membrane. While their function remains uncertain, alveoli may help regulate water balance by controlling how much water enters and leaves the cell. In dinoflagellates, these structures may serve as armor plates. There are three major types of alveolates: ciliates, which move using cilia; dinoflagellates, which use flagella for movement; and apicomplexans, which are...
33
01:27Diversity of Protists IV
33
Amoebozoa represent a diverse group of terrestrial and aquatic protists that utilize lobe-shaped pseudopodia for locomotion and feeding. This characteristic differentiates them from the Rhizaria, which possess threadlike pseudopodia. The primary classifications within Amoebozoa include gymnamoebas, entamoebas, and the plasmodial and cellular slime molds. Phylogenetic evidence indicates that Amoebozoa diverged from a lineage that ultimately gave rise to fungi and animals.Gymnamoebas and...
33