Results 41 to 50 of about 12,674 (148)
, 2009 2006年5月1日～7月18日,对哈尔滨北方森林动物园1对笼养灰鹤繁殖期行为进行观察,研究表明:笼养条件下,灰鹤静立（雄31.08%,雌35.81%）、理羽（雄19.81%,雌12.45%）、采食（雄13.23%,雌15.09%）行为比例较高,而繁殖行为占总行为时间比例雄鹤为2.49%、雌鹤为10.30%。灰鹤各行为日节律不明显;静立、理羽、休息和繁殖行为的发生受天气状况影响显著,尤其是静立和理羽差异极显著。灰鹤雌雄行为差异性在中期较显著,就整个繁殖期看 ...
何相宝, 刘丹, 田秀华, 赵锦霞
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Institutional Legacies and Governance Models: A Comparative Study of Broadband State Aid in Europe
Politics &Policy, Volume 53, Issue 5, October 2025.ABSTRACT This article explores how historical legacies and institutional configurations impact the governance models used in implementing State aid policies for broadband in France, Portugal, Spain, and the United Kingdom. The analysis is based on historical institutionalism, focusing on path dependence, critical junctures, and gradual institutional ...
Luís Manica +2 more
wiley +1 more source
New Phytologist, Volume 247, Issue 5, Page 2086-2097, September 2025.Summary The importance of marine angiosperms, or seagrasses, as foundation species for marine coastal ecosystems is in marked contrast to their low species number of only 70 described taxa. Seagrass species tend to have very similar overall morphologies dictated by hydrodynamic forces of the ocean environment.
Xiaomei Zhang +14 more
wiley +1 more source
Policy Studies Journal, Volume 53, Issue 3, Page 701-722, August 2025.Abstract Despite the reality that advocates frequently expend significant resources to pass symbolic policies, this policy design has often been neglected by policy studies scholarship. We combine policy design and policy feedback theory to examine this oft overlooked policy design in practice using the case of California's human right to water law ...
Jenny Linder Rempel +1 more
wiley +1 more source
Institutions, in time: Designing feedback pathways for shared infrastructure transitions
Policy Studies Journal, Volume 53, Issue 3, Page 654-680, August 2025.Abstract Electric utilities, challenged by a rapidly unfolding energy transition, use many informal institutions to bridge across technologies and sectors. Little is known, however, about how electric utility systems and other polycentric systems' institutions‐in‐use vary and evolve over time.
Matthew Grimley +6 more
wiley +1 more source
, 2010 2007年11月至2008年10月在新疆卡拉麦里山有蹄类野生动物保护区研究了鹅喉羚的昼间行为时间分配,共观察鹅喉羚有效个体1917只,采集行为数据时间319.5h,将鹅喉羚的昼间行为分为采食、移动、警戒、休息和"其它"5类。结果表明:春季雌性5种行为分配时间所占比例分别为67.5%、2.5%、2.7%、25.9%、1.4%,雄性分别为63.5%、3.4%、4.3%、27.5%、1.3%;夏季,雌性:43.7%、7.7%、5.6%、42.1%、1.0%;雄性:51.9%、1.7%、3.1%、41.4%、1.
乔建芳 +4 more
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Infant Mental Health Journal: Infancy and Early Childhood, Volume 46, Issue 4, Page 424-444, July 2025.Abstract Acknowledging that the parent–child attachment is a dyadic relationship, we investigated differences between pairs of parents and preschool children based on gender configurations in the association between attachment and problem behavior.
Magda Matetovici +4 more
wiley +1 more source
, 2021 为掌握白鹇海南亚种（Lophura nycthemera whiteheadi）的生态习性，探讨有效保护策略，2018年1月—2021年1月，在海南热带雨林国家公园五指山片区内布设50台红外相机进行连续监测，共收集白鹇独立有效照片1 472张，视频491个，对其行为时间分配，活动节律（日、月、季节）与海拔迁移规律进行分析。结果表明：①白鹇的日活动时间从06：00开始到20：00结束，其中出现3个活动高峰，即07：00—09：00、13：00和16：00；雄性与雌性的日活动频率无显著差异（t=2020 ...
2 尹为治 2 饶晓东 3 冯源 3 滕甜甜 3 刘辉 3 黄良鸿 2 +1 more
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野生动物学报, 2016 2014年6～8月,采用扫描取样法(Scan sampling)和目标取样法(Focal sampling)对沈阳森林动物园内丹顶鹤育雏期行为模式进行观察记录,研究了丹顶鹤育雏期行为时间分配和活动规律。研究结果显示:育雏期时间分配为觅食25%、育雏21%、游走19%、警戒18%、理羽10%、静栖7%。随着雏鹤日龄的增长,成鹤的育雏行为明显减少,理羽、游走、警戒、觅食行为均有所增加。雄性的警戒时间显著多于雌性,雌性的理羽时间显著多于雄性,雌性的育雏行为始终多于雄性。笼养丹顶鹤呈现一定的昼间活动规律 ...
徐天琦 田秀华 吴晓宇 宋艳珠 赵芳菊
doaj
蒙古野驴(Equus hemionus)昼间行为时间分配初探/Diurnal time budgets and activity rhythm of the Khulan[J]
, 2012 于2007年和2010年采用焦点动物取样法研究了新疆卡拉麦里山有蹄类野生动物保护区蒙古野驴昼间行为时间分配和活动节律,共采集行为数据460 h,观察蒙古野驴2 760头次,将蒙古野驴昼间行为分为采食、移动、警戒、休息和“其他”5类.采用卡方检验分析不同季节各种行为时间分配,结果表明:季节因素对蒙古野驴行为时间分配存在极显著影响(X2=79.06,df=12,P＜0.01).采用ANOVA分析同季节不同行为间差异,结果表明,春季:移动、警戒、“其他”两两间无显著差异(P＞0.05),其余两两间差异显著(P＜
David Blank +19 more
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