Results 31 to 40 of about 809,678 (149)
Abstract Achieving global conservation policy goals requires the ability to set and measure progress toward science‐based targets for biodiversity. The species threat abatement and restoration (STAR) metric was developed to enable actors to set science‐based targets for species.
Louise Mair +17 more
wiley +1 more source
Informing spatial conservation prioritization with species’ traits
Abstract New Guinea, the most botanically diverse island on the planet, is the location for one of the boldest conservation initiatives. The Manokwari Declaration aims to achieve 70% conservation designation for the Bird's Head Peninsula. This is 40% higher than the 2022 Global Biodiversity Framework target.
Liam A. Trethowan +27 more
wiley +1 more source
Background: DNA‐based vaccination rapidly induces strong cellular and humoral immune responses, which may be enhanced by inclusion of lysosomal‐associated membrane protein‐1 (LAMP). Objectives: This proof‐of‐concept study evaluated the efficacy and safety of a Der f 2/Zen 1‐LAMP‐based DNA vaccine immunotherapy in client‐owned dogs with nonseasonal AD ...
Petra Bizikova +6 more
wiley +1 more source
土地开发经营股份合作制对山丘区土地的景观格局产生了巨大的影响,应用MapGis软件对平邑县资邱乡开发区的景观空间分布格局进行了分析,包括景观多样性指数,均匀度,景观破碎化指数,斑块起源分类等,结果表明:受土地开发利用制度和人为因素的影响,开发区的景观多样性较低,景观破碎化程度很低,均匀度很高,引进斑块形状较为规则,分维数较小;斑块类型面积分布很不均匀,引进斑块的比例最大,廊道的比例和分布较合理,这些结论为未来的土地经营股份合作制的推广和土地利用提供了可靠的景观生态学依据。
李传荣 束怀瑞 等
doaj +2 more sources
ABSTRACT Background Identification of offending foods in dogs with adverse food reactions is usually based on “deterioration” during open food challenges. Objectives To examine the placebo effect during double‐blinded, placebo‐controlled food challenges using a predefined set of criteria for relapse.
Evi I. Sofou +4 more
wiley +1 more source
Mountains Without Borders: Scaling up Conservation Success for Snow Leopards
This special issue assembles pioneering research addressing three critical and interconnected challenges: establishing where viable populations persist at range edges, advancing methods to monitor this cryptic species and its prey effectively, and evaluating whether landscapes remain connected across political boundaries.
Juan Li, Lingyun Xiao
wiley +1 more source
以专题地图和遥感影像为数据源,采集1986、1995和2005年珠江口滨海湿地数据,选取基于景观类型的景观聚集度指数、景观分维数和基于景观面积的景观多样性指数,从景观类型和景观水平研究珠江口滨海湿地景观格局变化。结果表明:(1)在各湿地景观类型中,面积占绝对优势的是浅海水域景观,面积增加最多的是养殖水面,减少最多的是水田。(2)受人为开发因素影响,湿地总面积持续减少,1986―1995年和1995―2005年湿地总面积相继减少20821hm2和55708hm2,分别相当于研究区总面积的5.3﹪和14.2﹪
高义, 苏奋振, 薛振山, 孙晓宇
core
以泾河流域为例,在总结前人研究的基础上,筛选出7个一致性较好的景观指数,应用相关性分析和因子分析对其进行了筛选,并据此对研究区进行了分区。结果表明:面积加权平均分维数与面积变化具有较高的相关性,予以剔除。其余景观指数可以用景观分布与斑块形状因子和景观破碎化因子2个公因子代替,并据此将泾河流域32个县市分成3个类型区,分别处于流域的上游、中下游和下游地区 ...
杨丽, 谢高地, 甄霖
core +1 more source
ABSTRACT Urban expansion significantly impacts flood risk, particularly in rapidly growing areas where impervious surfaces exacerbate surface runoff. This study examines spatial patterns of urban growth and their effects on flood exposure in Mecklenburg County, North Carolina, from 2011 to 2021.
Pegah Madadi, Azad Sadeghi
wiley +1 more source
本文以遥感影像资料为基础信息源,以GIS及Fragstats景观格局分析软件为数据处理和破碎化指数计算的工具,在分析了塔里木河上游2000年和2005年景观格局变化的总体特征的基础上,选择景观斑块密度指数、景观斑块数量破碎化指数、景观斑块形状破碎化指数、景观分离度指数等指标,对塔里木河上游2000年和2005年景观破碎化程度进行了不同角度的分析。结果表明:就整个景观而言,斑块数量减少而平均斑块面积扩大,景观分布趋于连片,景观破碎化指数趋于稳定和减小;同时由于绿洲内部城镇化 ...
吴世新, 黄青, 王让会
core

