Results 21 to 30 of about 8,636 (191)
Jellyfish blooms restructure plankton dynamics and trophic linkages in coastal waters
Functional Ecology, EarlyView.Read the free Plain Language Summary for this article on the Journal blog. Abstract Jellyfish blooms are increasing globally in frequency and intensity, introducing complex ecological interactions, yet the mechanisms by which they alter ecosystem structure remain poorly characterized due to a lack of sustained field observations.
Pengpeng Wang +4 more
wiley +1 more source
Conservation Biology, EarlyView.Abstract Measuring area‐based conservation outcomes in tropical forests is challenging due to cryptic human disturbances (e.g., hunting). As a result, comparative studies of management strategies providing quantitative outcomes remain scarce, especially in the Neotropics.
Lucy Perera‐Romero +5 more
wiley +1 more source
Study on pollution ecology of microorganisms in polluted water in Shaxi Sanming river [PDF]
, 2005 摘要沙溪是闽江上游三大支流之一.近年来，随着三明市经济的发展，局部污染事件时有发生.微生物作为生态系统的三大组分之一，在有机质分解、营养物质循环和利用等方面起着重要的作用.由于微生物对环境胁迫的敏感性要比动物和植物高得多，因此它已成为评价环境变化的重要指标.本实验对沙溪三明河段的细菌、真菌、大肠菌群以及降解污染物的主要微生物种群进行了两年的数量跟踪，结合COD、总氮和总磷等污染物对沙溪水环境与微生物种群变化的关系进行了初步的研究.结果表明，各种微生物的数量变化与主要的有机污染物值之间存在显著的相关性 ...
谢文斐
core
Success of restoration strategies in preventing extirpation of 2 critically endangered coral species
Conservation Biology, EarlyView.Abstract An unprecedented marine heatwave in 2023 caused widespread coral bleaching and mortality throughout the Caribbean. In the Florida Keys (USA), 2 foundation species, elkhorn coral (Acropora palmata) and staghorn coral (Acropora cervicornis), were severely affected.
Erinn M. Muller +29 more
wiley +1 more source
野生动物学报, 2018 根据上海动物园斑嘴环企鹅(Spheniscus demersus)种群的谱系及相关数据,编制生命表,基于VERTEX10.2.5对该种群未来100年的动态进行模拟,进而为种群发展提出管理建议。结果显示在理想条件下,无近交、无灾害、无密度制约,种群呈持续增长状态,灭绝概率为0,种群数量将达到138只。而在实际情况下进行模拟,则不容乐观。种群衰退,100年后灭绝概率为95.8%,因此针对该种群现状有针对性地提出保护管理措施刻不容缓。
刘芳远 黄康宁 刘群秀 田秀华
doaj
The impacts of coastal defense structures on rocky intertidal community in Yangtze River Delta [PDF]
, 2016 长江三角洲是长江、黄河以及在此区域的其他河流的活动形成的冲积平原。末次冰期（LastGlacialMaximum，LGM）以后的一万年以来，长江三角洲在海陆交互作用的影响下逐渐扩展。位于长江三角洲地带的近900km的江苏沿岸海岸线除约40km的基岩海岸以外，均为不适宜岩相潮间带生物大量聚集的淤泥质平原海岸。近年来随着中国沿海经济的飞速发展，对土地需求的不断增加，越来越多的沿岸防护建筑正在被修建，成为我国沿岸的“海上长城”。这些沿岸防护建筑显著改变了江苏沿岸的滩涂景观，可能对潮间带群落造成严重影响 ...
黄雄伟
core
Lessons from an eradication under multiple constraints of an island rat population of record density
Conservation Biology, EarlyView.Abstract Invasive rats threaten island biodiversity, disrupting ecosystems and endangering native species. Although rat eradication has succeeded on many islands, tropical islands present unique management challenges. Strict regulations and financial constraints on some tropical islands further limit proven eradication methods, complicating rodent ...
Tatiane Micheletti +7 more
wiley +1 more source
野生动物学报, 1983 研究动物种群的动态,即种群数量及其变动规律,无论在生产实践上和生态学理论研究上,都具有重要的意义。褐马鸡（Crossoptilon mantchuricum）是世界珍稀雉类,被列为我国一类保护动物。掌握褐马鸡种群数量及其变化规律,反映出时间和空间的概念,求出现存量,这对保护和科学管理褐马鸡的资源尤为重要。褐马鸡以地面活动为主 ...
张俊, 刘焕金, 苏化龙, 冯敬义
doaj
The studies of two marine microalgae on the growth, diapause induction and egg conservation of Acartia pacifica [PDF]
, 2016 本文以发育时长、变态存活率、产卵量、孵化率、成体头胸部长和体长为指标，研究了球等鞭金藻(Isochrysisgalbana)和海洋原甲藻(Prorocentrummicans)以不同浓度和配比对太平洋纺锤水蚤(Acartiapacifica)生长、发育和繁殖的影响，以期探索培养太平洋纺锤水蚤最适合的饵料配方。同时，我们通过改变温度和光周期的培养环境探索了诱导太平洋纺锤水蚤产滞育卵的条件，并尝试添加不同的冷藏保护剂以延长卵的冷藏保存时间。主要研究结果如下： 1、不同的饵料浓度对太平洋纺锤水蚤发育时间 ...
付聪
core
Distribution, scale, and drivers of mass mortality events in Europe's freshwater bivalves
Conservation Biology, EarlyView.Abstract Mass mortality events (MMEs) are decimating populations and compromising key ecosystem functions around the globe. One taxon particularly vulnerable to MMEs is freshwater bivalve mollusks. This group has important ecosystem engineering capacities and includes highly threatened and highly invasive taxa.
Daniel A. Cossey +39 more
wiley +1 more source