对"追踪全球渔业足迹"的评论的回应
David A Kroodsma1, Juan Mayorga2,3, Timothy Hochberg4
1Global Fishing Watch, Washington, DC 20036, USA. david@globalfishingwatch.org.
概括
船舶跟踪数据显示了人类活动对海底息地的影响. 分析的适当规模取决于正在调查的特定生态系统影响.
科学领域:
- 海洋生态
- 海洋学
- 渔业科学
背景情况:
- 海底息地很容易受到人为干扰,特别是海底拖网捕捞.
- 了解人类活动的空间范围对于有效的海洋空间规划和保护至关重要.
- 之前的研究使用了不同的分辨率来评估拖网捕捞的影响,导致了潜在的差异.
研究的目的:
- 评估高分辨率与较粗的网格数据在估计海底鱼足迹方面的有效性.
- 通过船只跟踪数据确定适当的分析规模,以评估人类活动对生态系统的全部影响.
主要方法:
- 利用船只跟踪数据估计拖网活动的空间足迹.
- 对拖网足迹的高分辨率和粗的网格分析进行比较.
- 评估数据分辨率与理解生态系统层面影响的能力之间的关系.
主要成果:
- 高分辨率数据可以有效估计海底息地的拖网足迹.
- 为了全面了解拖网捕捞对生态系统的影响,需要一个更粗的网格.
- 分析的最佳尺度取决于背景,根据正在研究的人类活动和影响而有所不同.
结论:
- 船舶跟踪数据为人类对海洋生态系统的影响提供了宝贵的见解.
- 选择合适的数据分辨率对于准确评估生态影响至关重要.
- 在分析人类在海洋环境中的活动时,未来的研究应该考虑影响的规模依赖性.
相关概念视频
Optimal Foraging
How animals obtain and eat their food is called foraging behavior. Foraging can include searching for plants and hunting for prey and depends on the species and environment.
Threats to Biodiversity
There have been five major extinction events throughout geological history, resulting in the elimination of biodiversity, followed by a rebound of species that adapted to the new conditions. In the current geological epoch, the Holocene, there is a sixth extinction event in progress. This mass extinction has been attributed to human activities and is thus provisionally called the Anthropocene. In 2019 the human population reached 7.7 billion people and is projected to comprise 10 billion by...
Sustainable Development
As the human population continues to grow and use resources, we must be mindful of our planet’s natural limits. Sustainable development provides a pathway to maintain and improve human life now while also ensuring that future generations will have the resources that they need. The long-term success of sustainability efforts rests on understanding the interplay between human actions and ecological systems.
Responses to Salt Stress
Salt stress—which can be triggered by high salt concentrations in a plant’s environment—can significantly affect plant growth and crop production by influencing photosynthesis and the absorption of water and nutrients.
Multi-species Conserved Sequences
Next-generation sequencing technologies have created large genomic databases of a variety of animals and plants. Ever since the human genome project was completed, scientists studied the genome of primates, mammals, and other phylogenetically distant living beings. Such large-scale studies have provided new insights into the evolutionary relationship between organisms.
Although the genome of each species varies greatly from each other, a few sequences are highly conserved. Such conserved DNA...
Although the genome of each species varies greatly from each other, a few sequences are highly conserved. Such conserved DNA...
FISH - Fluorescent In-situ Hybridization
Fluorescence in situ hybridization, or FISH, was developed in the early 1980s and has quickly become one of the most widely used techniques in cytogenetics. Labeled probes are used to bind complementary DNA or RNA sequences on a chromosome or in a region within a cell. Earlier, the probes could only be obtained by cloning or reverse transcription of a DNA template. Currently, the probe oligonucleotides can be synthesized synthetically. Additionally, with the advancement of optical techniques,...


