Results 11 to 20 of about 26,958 (133)
Inferring alternative ecosystem states with field survey data
Methods in Ecology and Evolution, EarlyView.Abstract Many ecosystems potentially exhibit alternative stable states, where distinct states can coexist under identical environmental conditions. While simulation models have generated key hypotheses in alternative stable states theory, they often rely on scale‐free parameters disconnected from real ecosystems.
Ning Chen +10 more
wiley +1 more source
Comprehensive framework for assessing and optimizing existing research networks
Conservation Biology, EarlyView.Abstract Conservation, monitoring, and research networks, or collections of ecological research sites unified under a common mission of data collection or a research mission, are essential infrastructure for understanding large landscapes. However, most networks developed opportunistically over decades rather than through systematic design, creating ...
Alyson East +2 more
wiley +1 more source
Conservation Biology, EarlyView.Abstract The design of experiments to investigate the combined effects of multiple stressors requires exposing target organisms to multiple combinations of stressor doses. Concurrent manipulation of stressors is often infeasible with wildlife, but long‐lasting health effects allow individual health to be used as an integrator of prior stressor exposure.
Enrico Pirotta +24 more
wiley +1 more source
Perceived costs as drivers of wildlife management preferences in rural Tanzanian communities
Conservation Biology, EarlyView.Abstract Effectively managing human–wildlife interactions is crucial for fostering coexistence on shared landscapes. Management options are most effective when aligned with the preferences of people directly affected by wildlife, yet little is known about how socioecological factors influence these preferences.
Christian Kiffner +10 more
wiley +1 more source
Zhongguo shiyan zhenduanxue, 2005 目的探讨近视患者角膜屈光力与角膜表面对称性的相关关系。方法对近视患者眼1472只（其中男性眼715只,女性眼757只）、行PRK手术后1年的患者眼161只和行LASIK手术后1年的患者眼158只进行统计学分析,研究角膜平均屈光力（ACP）与角膜表面非对称指数（SAI）的相关关系。结果ACP与SAI在男性和女性中均存在明显的正相关关系（Pearson相关系数为分别为0·120、0·108 ...
吴荒, 周跃理, 岳志强, 宋跃
doaj
Advancing conservation breeding programs for marine invertebrates
Conservation Biology, EarlyView.Abstract In the face of ecosystem change and biodiversity loss caused by climate change and other stressors, conservation breeding, or captive breeding, with the aim of reintroduction for wild population recovery, is an emerging tool for preventing species’ extinction and rehabilitating ecosystems.
Elora H. López‐Nandam +3 more
wiley +1 more source
Guangtongxin yanjiu, 2019 针对二维光编解码接入网链路监测系统中多路距离相近用户信号叠加难以设置阈值的问题,提出了一种基于信号相关性的链路状态识别算法。该算法以正常信号为基准,对实时检测的信号进行信号相关性分析,根据带补偿自定义相关系数及系统的编码规则判断具体分支链路状态。搭建了32用户、3路等距实验系统,等距离链路断路个数为1时,相关系数为0.626 1;断路个数为2时,相关系数分别为0.342 1、0.386 5,均在阈值区间内。仿真结果表明 ...
郭浩 +8 more
doaj
Taxonomic and functional diversity of urban bees of the world
Conservation Biology, EarlyView.Abstract Bees play a pivotal role in terrestrial environments. Urbanization can affect these organisms and the ecosystem services they provide. However, knowledge of the global diversity of urban bees is limited. Thus, we summarized data on urban bee species identities and occurrences; compared distributions of all bees with those found in urban ...
João C. F. Cardoso +10 more
wiley +1 more source
Conservation Biology, EarlyView.Abstract Knowledge of species distributions is essential for informing policies on nature conservation and restoration. However, updating them on a regular basis and doing so in a harmonized manner at the international level is difficult. The European Bird Census Council integrated national monitoring data covering 5 years to update farmland bird ...
Sergi Herrando +54 more
wiley +1 more source
Zhejiang Daxue xuebao. Lixue ban, 2018 乌药含有呋喃倍半萜、黄酮、生物碱、挥发油等多种化学成分，具有抗氧化、抗肿瘤及抑菌等活性.为研究乌药化学成分的性质，计算了乌药化学成分的分子连接性指数和电性拓扑状态指数，并筛选分子连接性指数中的0X，5X和5Xc，以及电性拓扑状态指数中的E1,E2和E3，将这6种结构指数作为神经网络的输入层变量，色谱保留时间作为输出层变量，做回归分析，采用6：5：1的神经网络结构，构建了预测能力较强的预测模型.该模型总相关系数rt为0.994 0，训练集相关系数为0.992 9，测试集相关系数为0.997 0 ...
DUXihua(堵锡华), WANGChao(王超)
doaj +1 more source