Results 21 to 30 of about 16,001 (188)
Haiyang yu huzhao由于湖泊水库等养殖水体中鱼饲料等营养物质的投加，导致藻类大量繁殖并严重威胁养殖水体生态平衡，了解养殖水环境中藻类之间的竞争特点和生存策略对揭示水华暴发机制具有重要意义。实验采用无氮磷的M-11培养基，加入鱼饲料制备成改进的M-11培养基，以铜绿微囊藻和斜生栅藻为实验对象，设定培养条件为：白天3 000 lx，28 ℃，12 h；夜间0 lx，20 ℃，12 h。通过测定藻细胞密度和氮磷营养盐浓度，并应用改进的藻生长动力学方程和竞争方程 ...
李 高成 +5 more
doaj +1 more source
Wildlife Letters, EarlyView.Reported annual per‐capita harvest of muskrats (PCHM) decreased as wetland complexity (total number of wetland patches) decreased in 13 state and federal wetland areas in the Midwest, USA. Our results support the hypothesis that regional‐scale declines in the abundance of muskrats are likely associated with the losses to wetland habitats throughout the
Tim L. Hiller +5 more
wiley +1 more source
Zhejiang Daxue xuebao. Lixue ban, 2009 在28 ℃、(28 ±3) ℃和(28 ±6) ℃温度条件下孵化乌龟（Chinemys reevesii）卵,检测上述温度条件对孵化期、孵化成功率、幼体大小以及运动能力的影响.孵化温度显著影响乌龟卵的孵化期、幼体重量和背甲大小,但对孵化成功率和幼体运动能力无显著影响.恒温条件下卵的孵化期短于波动温度,恒温条件下孵出的幼体体重大于波动温度条件下的幼体.因此,与恒温相比,波动孵化温度并不提高乌龟幼体质量.
SHULin(舒霖) +3 more
doaj +1 more source
Wildlife Letters, EarlyView.We conducted a grouping study on 52 adult musk deer to investigate whether group sex composition modulates aggressive behavior and stress response in captive musk deer. We found that the conflict interactions of all‐male groups were significantly more than those of mixed groups, and compared with the mixed groups, the conflict interactions of all‐male ...
Xiaolong Wang +5 more
wiley +1 more source
Wildlife Letters, EarlyView.The study explores how beavers (Castor spp.) affect endangered freshwater pearl mussels (Margaritifera margaritifera) in European rivers. Beaver dams can harm small, fragmented mussel populations by reducing flow, increasing sediment, and potentially limiting host fish movement, while larger populations may benefit from improved bed stability and ...
Louise Lavictoire +2 more
wiley +1 more source
Zhejiang Daxue xuebao. Lixue ban, 2014 以雄性SD大鼠为实验动物，研究共轭亚油酸(CLA)和低氧的结合对肌肉脂质代谢的影响.取大鼠血液和肌肉，测葡萄糖、甘油三酯、组织乳酸、肌糖原、游离脂肪酸、胰岛素、脂肪酸合酶(FAS)、脂蛋白酯酶(LPL)、激素敏感酯酶(HSL).结果显示：CLA对大鼠体重没有显著影响(P>0.
ZHANGKai(张凯) +3 more
doaj +1 more source
Zhejiang Daxue xuebao. Lixue ban, 2003 微黄镰玉螺的消化系统由消化道和消化腺两部分组成:消化道包括口、食道、胃、肠及直肠;消化腺包括食道腺、肝胰腺和肛门腺,无唾液腺.在光学显微镜下,消化道由粘膜层、粘膜下层、肌层和外膜4层结构构成.描述了消化道及消化腺的结构特征,并利用组织化学方法测定了消化腺细胞中的蛋白质和酶类,对各消化腺的功能作了初步分析.
YINGXue-ping(应雪萍) +3 more
doaj +1 more source
Functional Ecology, EarlyView.Read the free Plain Language Summary for this article on the Journal blog. Abstract Decomposition is the transformation of dead organic matter into its inorganic constituents. In most biomes, decomposition rates can be accurately predicted with simple mathematical models, but these models have long under‐predicted decomposition in globally extensive ...
Heather L. Throop +8 more
wiley +1 more source
Multi‐gradient warming reshapes functional traits and adaptive responses of alpine meadow plants
Functional Ecology, EarlyView.Read the free Plain Language Summary for this article on the Journal blog. Abstract Plant functional traits in alpine meadows are critical indicators of ecosystem responses to climate warming, yet dynamic changes in trait networks across warming gradients and their consequences for community functions remain poorly understood.
Zhiwei Yan +6 more
wiley +1 more source
International Journal of Urban and Regional Research, EarlyView.Abstract From desert ski resorts to subtropical Winter Games, there is a global proliferation of ‘mission‐impossible’ mega‐projects. The prevailing frameworks of city branding and urban entrepreneurism fail to explain the political logics behind these seemingly irrational projects.
Yiqiu Liu, Sven Daniel Wolfe
wiley +1 more source