Results 21 to 30 of about 1,666,495 (163)
Conservation Biology, EarlyView.Abstract Adaptive management of threatened species relies on having ex ante estimates of species’ responses to different interventions. Structured expert elicitation is often used to generate these estimates, but comparisons of these expert‐predicted outcomes with observed results are rare.
Helen J. Mayfield +18 more
wiley +1 more source
Intact coastal nursery rearing amid climate‐driven phenological shifts in threatened salmon
Conservation Biology, EarlyView.Abstract Literature linking phenology to climate has proliferated in recent decades and shows that climate change has reorganized seasonal opportunities worldwide. However, this literature often quantifies changes in point measures of timing (e.g., beginnings and peaks) without context about duration (e.g., rearing season length) or performance (e.g ...
Stuart H. Munsch +8 more
wiley +1 more source
Shuitu Baochi Xuebao, 2022 为了对自1999年起辽宁省沈阳市康平县实施的生态系统恢复工程的成效进行评估, 利用多期Landsat影像解译了康平地区陆表生态系统时空分布特征; 利用气候要素回归分析、生态系统转移矩阵以及生态系统综合人类扰动指数等研究方法, 对康平地区自1984年以来的陆表生态系统格局进行了研究, 特别是对生态系统恢复工程实施20年来的生态系统时空变化规律进行了探索, 并分析了其演变的驱动力机制。结果表明: (1)1999—2020年康平地区的生态系统格局发生显著变化, 主要表现为沙地面积占比减少35.391 ...
李虹 +4 more
doaj
Subspecies taxonomy reflects social and geographic patterns of taxonomic effort in tetrapods
Conservation Biology, EarlyView.Abstract Subspecies have been used in conservation biology to account for intraspecific patterns in genetic diversity, which is crucial to long‐term population viability. Although over 3200 subspecies are currently assessed by the International Union for Conservation of Nature Red List, their biological relevance remains controversial.
Jhonny J. M. Guedes +3 more
wiley +1 more source
, 1990 本文分析了农业资源与农业管理体系总体结构，提出了综合农业区划分模型，进行了综合农业区划决策支持系统的初步设计。农业区划是认识农业资源与指导农业生产的主要手段，农业区划工作是建立在大量的农业资源数据的基础上。农业区划分析模型的应用与决策支持系统的建立将有效地利用资源数据，提高区划工作的水平与效率，为整个农业生产管理计算机辅助支持系统的建立打下基础。本文的第一章至第三章，在总体上论述了农业生产管理体系与计算机辅助支持问题，第四章至第六章则从系统工程、模式识别与系统科学的角度提出了农业区划数学分析方法 ...
刘志军
core +1 more source
Shuitu Baochi Xuebao, 2021 植被净初级生产力（NPP）是陆地生态系统碳循环过程中的重要组成部分，也是评价碳源/汇的重要环节。基于2001—2019年MODIS地表反射率数据（MOD09A1）、气温和日照时间资料，利用光能利用率模型估算了吉林省陆地生态系统NPP，采用趋势分析、空间变异性分析等方法，分析了吉林省陆地生态系统NPP的时空变化特征及其与气候因子的相关性。结果表明：（1）2001—2019年，吉林省植被NPP年均值与总量均成波动上升趋势，辖区内植被NPP总量表现为森林>农田>草地。（2）2001 ...
严俊霞 +4 more
doaj
Conservation Biology, EarlyView.Abstract The sustainability of area‐based conservation initiatives depends on their value to society. Conservation often focuses inside protected areas, but the impacts of protected areas beyond their boundaries (spillovers) are critical for their social license.
Ilaria Gliottone +5 more
wiley +1 more source
Synthesis of Pollinator‐Friendly Management in European Protected Areas
Conservation Biology, EarlyView.Effectiveness of pollinator‐friendly management in European protected areas. Abstract Pollinators are important to humans and nature due to their role in ecosystem functioning and services. Research on the effects of pollinator management in protected areas is insufficient compared with that on farmlands and urban areas, potentially hindering ...
Gabriella Süle +45 more
wiley +1 more source
野生动物学报, 2009 基于现有的安徽省两栖爬行动物分布资料,系统整理物种分布数据,建立两栖爬行动物地理分布原始数据库。运用GIS技术,以县级行政区为地理单元,分析物种丰富度格局,通过多元统计分析,研究物种多样性的区域分异。结果表明,皖南山地丘陵和大别山山地丘陵地带物种丰富度最高:淮北平原、江淮丘陵的物种丰富度相对较低;但淮北平原和江淮丘陵的部分山地丘陵物种丰富度相对较高。根据各县的分布型物种数量分布,当聚为2组（Jaccard系数大于7.612）时,安徽省物种分布型区域分异基本上呈现山区系组（皖南山区和大别山区 ...
李中文, 周立志
doaj
Protected areas on international borders show uneven conservation outcomes
Conservation Biology, EarlyView.Abstract Border protected areas (BPAs) are national protected areas that are immediately adjacent to a country's border or span two or more countries; they are characterized by distinctive opportunities and pressures. They play a critical role in protecting carbon‐rich ecosystems, conserving endangered biodiversity, reducing cross‐border environmental ...
Rachakonda Sreekar +10 more
wiley +1 more source