Results 111 to 120 of about 18,066 (188)

黑龙江省海林市威虎山影视基地夏季常见脊椎动物物种多样性及其动态

open access: yes野生动物学报, 2009
2002~2009年,对黑龙江省海林市横道河子镇威虎山影视基地夏季脊椎动物物种多样性进行调查,结果表明:该地区夏季常见脊椎动物有122种,其中圆口纲动物1种、鱼类11种、两栖类6种、爬行类5种、鸟类83种、哺乳类16种,每年平均能够见到79种,由于道路施工以及影视剧拍摄等人为活动干扰使得该地区脊椎动物的物种多样性从2005年显著减少,现正逐步恢复。
陈辉, 刘鹏, 赵文阁, 周志龙
doaj  

牛姆林自然保护区常绿针阔叶混交林群落特征初探 [PDF]

open access: yes, 2002
对福建省牛姆林自然保护区常绿针阔叶混交林的区系组成、地理成分、垂直结构、物种多样性等特征研究结果表明,该混交林群落维管植物种类组成丰富,600m~2样地内有38科62属119种,其中以常绿高位芽植物占绝对优势;种子植物地理成分中热带性质属37属占64.91%,温带成分19属占33.33%;群落分层现象明显,乔木层可分4个亚层,乔、灌木及藤本植物种类和数量均丰富,草本植物较少;比较群落各部分多样性水平为灌木层>乔木层>草本层 ...
严重玲   +3 more
core  

Land tenure contributions to protected area growth under alternative conservation targets in the Australian monsoon tropics

open access: yesConservation Biology, Volume 40, Issue 1, February 2026.
Abstract As the global protected area (PA) network expands to meet international targets, it is important to assess whether traditional reliance on public land will suffice for projected PA growth or whether other tenures, such as Indigenous or pastoral lands, may increasingly contribute.
Emmeline Norris   +2 more
wiley   +1 more source

汉阳水网中5个连通湖泊的原生动物群落结构与物种多样性

open access: yesHaiyang yu huzhao
为了解汉阳水网中的原生动物群落结构与物种多样性特征及其影响因子, 探讨原生动物对湖泊富营养化的响应规律, 于2021~2022年对水网中5个湖泊的水环境及原生动物进行了4个季节的调查分析。结果表明, 后官湖为轻度富营养, 三角湖和南太子湖为中度富营养, 墨水湖和龙阳湖为重度富营养。共检出原生动物31属59种, 其中后官湖种类最少, 有21种, 龙阳湖和墨水湖种类较多, 分别有41种、40种。原生动物年均密度的变化范围为123.37~579.47 ind./L, Shannon ...
熊 雪平   +4 more
doaj   +1 more source

Evolution of research on global amphibian declines

open access: yesConservation Biology, Volume 40, Issue 1, February 2026.
Abstract In the late 1980s, the scientific community became aware of severe, enigmatic amphibian population declines. These declines triggered a wave of research focused on quantifying their extent and identifying key drivers. We used text‐analysis techniques, including topic modeling and geoparsing, to examine the evolution of research focused on ...
Jordann Crawford‐Ash   +6 more
wiley   +1 more source

西沙赵述岛海域珊瑚礁鱼类物种多样性 [PDF]

open access: yes, 2018
2017年4月采用水下录像方式对西沙赵述岛潟湖内外珊瑚礁鱼类种类组成、密度和种类相似度以及造礁珊瑚覆盖率进行评估.共鉴定珊瑚礁鱼类58种,隶属于1纲3目18科37属,其中鲈形目占绝对优势,共55种,占总种类数的94.83%.潟湖内外的珊瑚礁鱼类平均密度存在显著差异,且潟湖内(1.712 3±0.273 2尾/m2)高于潟湖外(0.655 1±0.029 3尾/m2).胸斑眶锯雀鲷(Stegastes fasciolatus)、三斑海猪鱼(Halichoeres trimaculatus)、宅泥鱼 ...
刘敏   +4 more
core  

Changes in Key Biodiversity Area networks following national comprehensive assessments

open access: yesConservation Biology, Volume 40, Issue 1, February 2026.
Making comprehensive assessments of Key Biodiversity Area (KBA) networks in a country greatly increases their number and area. Countries that have not yet done so will be missing about half of these globally significant sites and missing the opportunity to get 30 × 30 conservation in the right places. Abstract Key Biodiversity Areas (KBAs) are sites of
Andrew J. Plumptre   +46 more
wiley   +1 more source

Investigation of Species diversity of Cestodes of Fishes in Taiwan Strait and Preliminary Studies on Molecular Phylogeny of Cestodes [PDF]

open access: yes, 2006
目前世界上已报道的绦虫有4000余种,有近半数种类的绦虫寄生于鱼类。大量海洋鱼类尚未被调查,同时许多绦虫之间的系统发育关系亦尚不清楚。本文作者正是针对这些问题而开展研究的。全文共分为两部分: 第一部分:台湾海峡鱼类绦虫物种多样性调查。作者于2003年4月至2005年3月调查了厦门市场常见的海洋鱼类,对检获的绦虫进行仔细的光学显微镜形态观察结合扫描电镜照片比较鉴定。本文共描述11种,分别隶属于三个目,五个科,七个属。其中有两个种类,经作者形态比较鉴定它们为新种,并建议建立一新属来容纳其中一种 ...
周霖
core  

Importance and spatial patterns of invisible fisheries in Amazonian clear‐water rivers as revealed by fisher knowledge and collaboration

open access: yesConservation Biology, Volume 40, Issue 1, February 2026.
The graphical abstract highlights the research collaboration with fishers through interviews to record fishers' knowledge and participatory monitoring, to provide data on small‐scale fisheries in three clear water rivers (Trombetas, Tapajos and Tocantins).
Renato A. M. Silvano   +10 more
wiley   +1 more source

Ecological Characteristics of Phoebe bournei (Hemsl.) Yang Community in Fujian [PDF]

open access: yes, 2011
本次研究以福建省内沙县罗卜岩自然保护区(以下简称罗卜岩)、明溪君子峰自然保护区沙洲坑(以下简称沙洲坑)、政和凤头村(以下简称凤头村)、泰宁世界自然遗产地沁洋川(以下简称沁洋川)等4个闽楠原生群落为研究对象,在每个群落各设置4块10m×10m的样方进行每木调查,并在各样地取3块20m×20m样方进行种群调查,运用植物群落学和生态学的原理和方法对植物区系成分、物种多样性、空间分布格局、以及生态位的各生态指标进行测定,揭示了福建省4处成片闽楠原生群落的主要生态特征的共同点和差异,分析了造成这些差异的因素所在 ...
肖霜霜
core  

Home - About - Disclaimer - Privacy