鲸类与海洋碳循环有什么关系？
How are whales connected to the ocean carbon cycle?
鲸类通过垂直迁移和排泄把营养与碳在海洋不同深度间重新分配，促进浮游植物生长。它们死亡后沉入海底，将体内碳长期封存于深海。保护鲸群被视为一种自然的碳汇增强手段。
Whales redistribute nutrients and carbon across ocean depths through their movements and feces, boosting phytoplankton growth. When they die and sink, their bodies lock away carbon in the deep sea for the long term. Protecting whale populations is viewed as a natural way to enhance the carbon sink.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 来源待核验 · Source pending review
来源 · Source
出处备注：著录仅给书名，无版次与年份；同一书名常对应多个版次，不臆测具体版本。
《自然》;国际捕鲸委员会科学文献
Nature;IWC
#鲸类 #碳循环 #蓝碳
渔业资源管理中,总可捕量(TAC)制度为什么必须与个体可转让配额(ITQ)结合才能有效防止“公地悲剧”?
In fisheries management, why must the total allowable catch (TAC) system be combined with individual transferable quotas (ITQs) to effectively prevent the tragedy of the commons?
单纯设定TAC只限制了总捕捞量,但每条渔船都有抢先捕捞的激励,导致“赛马式捕捞”,船队过度投资、渔季被压缩到几周内。ITQ将捕捞权分解为可持有、可交易的个体份额,使渔民从争夺存量转为经营资产,捕捞成本下降、渔获更易按市场节奏销售。冰岛、新西兰的经验表明,TAC加ITQ的组合能显著改善种群生物量并提高行业利润。
A TAC alone caps total landings but leaves every vessel an incentive to race for fish, producing derby fishing, overcapitalized fleets, and seasons compressed into a few weeks. ITQs break the catch into individual shares that can be held and traded, turning fishermen from rivals for a common stock into managers of a quasi-asset; costs fall and landings are timed to market demand. Experience in Iceland and New Zealand shows the TAC-plus-ITQ combination can rebuild stock biomass while raising industry profits.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-11-03
来源 · Source
联合国粮农组织《负责任渔业技术准则第4号：渔业管理》；粮农组织渔业技术论文404/2《渔业中产权的使用》
FAO, Technical Guidelines for Responsible Fisheries No. 4: Fisheries Management; FAO Fisheries Technical Paper 404/2, Use of Property Rights in Fisheries Management
独立核验依据 · Independent verification: 核验依据 1 OPENLIBRARY 标识 /works/OL376570W：Use of Property Rights i
#渔业管理 #配额制度
从细胞层面看，热应激使珊瑚排出体内共生藻并显现“白化”的因果链条是什么？为什么经历白化但未死亡的珊瑚群落仍处于高风险状态？
At the cellular level, what is the causal chain by which heat stress drives corals to expel their algal symbionts and bleach? And why does a bleached colony that survives remain at high risk?
升温首先损伤虫黄藻的光系统II，过剩激发能生成大量活性氧并侵入宿主细胞；宿主随即激活凋亡与自噬样通路，把共生藻逐出组织。失去藻类后，珊瑚断供了占能量预算绝大部分的光合产物，捕食浮游生物仅能勉强维生，钙化速率也大幅下降。高温持续数周便耗尽储备，引发饥饿与组织崩解；即使颜色恢复，其生长与繁殖能力也已明显受损。
Warming first impairs photosystem II in the dinoflagellate symbionts, so excess excitation energy floods cells with reactive oxygen species that invade the host. The coral responds by activating apoptosis-like and autophagy-like pathways that expel the algae. Stripped of photosynthate—which supplies most of its energy budget—the colony subsists on plankton capture while its calcification rate falls sharply. Weeks of sustained heat exhaust reserves, causing starvation and tissue breakdown; even after color returns, growth and reproduction stay depressed.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 来源待核验 · Source pending review
来源 · Source
出处备注：著录含书名，但缺版次 / 出版社 / 年份中的一部分，需编辑补全后才能做独立比对。
V. M. Weis：《实验生物学杂志》（Journal of Experimental Biology）第211卷（2008）：3059–3066
V. M. Weis, Journal of Experimental Biology 211 (2008): 3059-3066
#珊瑚白化 #虫黄藻 #活性氧 #共生瓦解
深海生态系统在碳储存中起什么作用？
What role do deep-sea ecosystems play in carbon storage?
深海沉积物和底栖生物长期封存了地球大部分有机碳，是气候调节的终极碳库。生物泵把表层碳输送至海底，部分被埋藏数千年以上。深海采矿或扰动可能释放这些碳并损害脆弱生物群落。
Deep-sea sediments and benthic organisms store most of Earth's organic carbon long term, acting as the ultimate climate carbon reservoir. The biological pump carries surface carbon to the seafloor, where some is buried for millennia. Deep-sea mining or disturbance could release that carbon and harm fragile communities.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 来源待核验 · Source pending review
来源 · Source
出处备注：著录仅给书名，无版次与年份；同一书名常对应多个版次，不臆测具体版本。
《自然》;联合国教科文组织政府间海洋学委员会
Nature;IOC-UNESCO
#深海 #碳储存 #生物泵
海洋浮游植物对气候有什么作用？
What role do marine phytoplankton play in climate?
浮游植物通过光合作用吸收大量CO2，并把碳随死亡残体沉入深海，构成海洋生物泵。它们还产生二甲基硫等气体，可能影响云的形成。其生产力变化会反馈到全球碳循环与气候。
Phytoplankton absorb large amounts of CO2 through photosynthesis and sink carbon to the deep sea as they die, forming the ocean's biological pump. They also emit gases like dimethyl sulfide that may influence cloud formation. Changes in their productivity feed back into the global carbon cycle and climate.
难度 进阶 · 适合 大众
CC BY 4.0 · 来源待核验 · Source pending review
来源 · Source
出处备注：著录仅给书名，无版次与年份；同一书名常对应多个版次，不臆测具体版本。
联合国教科文组织政府间海洋学委员会;《自然》
IOC-UNESCO;Nature
#浮游植物 #生物泵 #碳循环
什么是海洋热浪，它有什么危害？
What is a marine heatwave and why is it harmful?
海洋热浪是某海域海温异常持续偏高的事件，频率与强度随变暖上升。它引发珊瑚白化、海藻林退化和鱼类群落改变，扰乱渔业与食物链。海洋热浪常在不知不觉中发生，却对生态系统冲击猛烈。
A marine heatwave is an event where sea temperature in a region stays abnormally high for an extended period, growing more frequent and intense with warming. It triggers coral bleaching, kelp forest loss, and shifts in fish communities, disrupting fisheries and food webs. Marine heatwaves often occur unnoticed yet hit ecosystems hard.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
Odum & Barrett,《Fundamentals of Ecology》第5版,Brooks/Cole,2004
E. P. Odum and G. W. Barrett, Fundamentals of Ecology, 5th ed., Brooks/Cole, 2004
独立核验依据 · Independent verification: 核验依据 2 OPENLIBRARY 标识 /works/OL3334843W：Fundamentals of ecology
#海洋热浪 #海温 #生态冲击
渔业资源管理中,最大可持续产量为什么被批评不宜作为唯一管理目标?
In fisheries management, why is maximum sustainable yield criticized as unsuitable as the sole management target?
MSY 假设种群增长仅取决于资源量,忽略了种群自然波动、生态系统相互作用与捕捞的经济成本。把捕捞强度推到生物极限会使种群长期处于较低水平,一旦遭遇环境突变便容易崩溃。因此许多渔业转向最大经济产量或基于生态系统的管理,把风险预防与生态目标纳入决策。
MSY assumes stock growth depends only on abundance, ignoring natural variability, ecosystem interactions, and the economic cost of fishing. Harvesting at the biological maximum keeps stocks persistently low and leaves them prone to collapse when conditions shift abruptly. Many fisheries therefore move toward maximum economic yield or ecosystem-based management that embeds precaution and ecological objectives.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-11-04
来源 · Source
Mace,《A new role for MSY in single‐species and ecosystem approaches to fisheries stock assessment and management》,Fish and Fisheries,2001 (DOI: 10.1046/j.1467-2979.2001.00033.x)
Mace, 'A new role for MSY in single‐species and ecosystem approaches to fisheries stock assessment and management', Fish and Fisheries, 2001, DOI: 10.1046/j.1467-2979.2001.00033.x
独立核验依据 · Independent verification: 核验依据 1 Crossref DOI 10.1046/j.1467-2979.2001.00033.x
#最大可持续产量 #预防性管理
海洋酸化是怎样发生的？
How does ocean acidification occur?
海洋吸收了过多大气CO2，使其转化为碳酸并释放氢离子，导致海水pH下降。酸度升高会削弱贝类、珊瑚等生物构建碳酸钙外壳的能力。这威胁从浮游生物到渔业的整个海洋食物链。
The ocean absorbs excess atmospheric CO2, which forms carbonic acid and releases hydrogen ions, lowering seawater pH. Higher acidity weakens the ability of shellfish, corals, and others to build calcium carbonate shells. This threatens marine food webs from plankton to fisheries.
难度 入门 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
Odum & Barrett,《Fundamentals of Ecology》第5版,Brooks/Cole,2004
E. P. Odum and G. W. Barrett, Fundamentals of Ecology, 5th ed., Brooks/Cole, 2004
独立核验依据 · Independent verification: 核验依据 2 OPENLIBRARY 标识 /works/OL3334843W：Fundamentals of ecology
#海洋酸化 #pH #碳酸钙
海草床有哪些重要的生态功能？
What important ecological functions do seagrass meadows have?
海草床高效固碳，并为鱼、海龟和底栖生物提供育幼栖息地。它们还能稳定沉积、净化水质并缓冲海岸侵蚀。全球海草正因污染和填海而快速退缩。
Seagrass meadows sequester carbon efficiently and provide nursery habitat for fish, turtles, and benthic life. They also stabilize sediments, improve water quality, and buffer coastal erosion. Globally, seagrasses are retreating rapidly from pollution and land reclamation.
难度 入门 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
Odum & Barrett,《Fundamentals of Ecology》第5版,Brooks/Cole,2004
E. P. Odum and G. W. Barrett, Fundamentals of Ecology, 5th ed., Brooks/Cole, 2004
独立核验依据 · Independent verification: 核验依据 2 OPENLIBRARY 标识 /works/OL3334843W：Fundamentals of ecology
#海草床 #蓝碳 #栖息地