Results 21 to 30 of about 1,279,856 (124)
Plant invasion in mountain ecosystems reduces soil micro‐food web complexity at higher elevations
Functional Ecology, EarlyView.Read the free Plain Language Summary for this article on the Journal blog. Abstract Anthropogenic activities have accelerated plant invasions in mountain ecosystems, impacting the structure and functions of native plant communities. Changes in above‐ground vegetation can drive shifts in below‐ground biota, yet the effects of plant invasions on soil ...
Runjie Jiao +8 more
wiley +1 more source
Herbivory enhances cadmium foraging in the invasive hyperaccumulating plant Phytolacca americana
Functional Ecology, EarlyView.Read the free Plain Language Summary for this article on the Journal blog. Abstract Biological invasions and heavy metal pollution are two pervasive environmental challenges threatening global ecosystems. While the elemental defence hypothesis posits that certain plants accumulate heavy metals to deter herbivores, it remains unclear whether invasive ...
Jingge Kuang +5 more
wiley +1 more source
Zhongguo shiyan zhenduanxue, 2011 目的提高对于原发性食管恶性黑色素瘤影像的认识。方法回顾性分析4例经手术病理证实的原发性食管恶性黑色素瘤患者的X线及CT影像资料,并复习相关国内外文献。结果 4例患者术前均行上部胃肠道口服钡餐造影及多层螺旋CT检查。肿瘤均为单发,2例肿瘤位于食管下段,2例位于食管中下段。病变均突向腔内,2例呈结节样,2例为不规则肿块。4例中1例螺旋CT证实有食管旁淋巴结增大。4例中1例术前考虑为原发性食管恶性黑色素瘤,3例考虑为食管癌。结论原发性食管恶性黑色素影像表现缺乏特异性,当食管中下段发现肿瘤且梗阻不明显时 ...
刘岳峰 +4 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
Institutional lessons from the Nordic management model
Conservation Biology, EarlyView.Abstract To improve wildlife management outcomes, in terms of reaching management goals and increasing legitimacy, Nordic countries have developed institutional systems involving stakeholders that aim for a more inclusive and participatory model.
Jens Nilsson +2 more
wiley +1 more source
Conservation Biology, EarlyView.Abstract Site fidelity is the tendency for animals to repeatedly return to the same locations, either within or between years. Site fidelity enables animals to utilize knowledge of previously visited locations, including assessments of seasonal variations in health and mortality risks (e.g., predation), resource availability, and social benefits such ...
Tobias A. Ross +13 more
wiley +1 more source
食管黏膜脱落细胞DNA倍体联合血清标志物检测在食管癌诊断中的价值
Zhongguo shiyan zhenduanxue, 2016 目的探讨血清肿瘤标志物神经元特异性烯醇化酶（NSE）、癌胚抗原（CEA）联合食管黏膜脱落细胞DNA倍体在食管癌诊断中的应用价值。方法选取我院收治的经胃镜诊断为食管病变患者128例,其中64为食管癌患者,64例为食管良性病变患者,使用罗氏电化学发光免疫系统检测其血清NSE、CEA水平,采用ICM检测DNA倍体水平,分析其特异性及敏感性。结果 64例食管癌患者中有45例DNA倍体为阳性,64例食管良性病变患者中,3例DNA倍体异常,食管癌组患者的NSE、CEA水平均明显高于良性病变组,组间比较有明显差异 ...
李德生 +4 more
doaj
野生动物学报, 2023 为了对比分析冬季和春季狍（Capreolus pygargus）取食营养策略及其影响因素，2020年11月—2021年5月，在吉林珲春东北虎国家级自然保护区进行野外调查和样本采集等工作，共收集狍粪便38份，其中冬季26份，春季12份；植物样本953份，其中冬季542份，春季411份。通过分析狍食性，测定可食植物宏营养和微营养含量，以及定量环境中食物获得性和可食植物的营养含量，对比分析冬春季狍的食物组成和营养策略。结果表明：冬春季狍食物组成和食物可获得性存在差异 ...
齐琦, 包衡, 姜广顺
doaj
Pursuit of dietary diversity : from the cardiologist's point of view [PDF]
, 2016 application/pdf第13回日本機能性食品医用学会総会会長講演journal ...
朔, 啓二郎 +26 more
core
Pest‐preservation paradox among insects
Conservation Biology, EarlyView.The pest‐preservation paradox is a non‐binary perspective that insects range from those that are harmful and requiring management on the one side, to those requiring conservation intervention on the opposite end of the spectrum. Importantly, the vast majority of insects occur somewhere in the center of the two extremes, and their position along the ...
Michael J. Samways +3 more
wiley +1 more source