Results 61 to 70 of about 203,020 (279)

Effects of climate on size structure and functioning of aquatic food webs [PDF]

, 2010
In aquatic food webs, the role of body size is notoriously strong. It is also well known that temperature has an effect on body size. For instance, Bergmann’s rule states that body size increases from warm to cold climates.
Lacerot, G.
core  

Human pressures on two estuaries of the Iberian Peninsula are reflected in food web structure [PDF]

, 2019
As a result of the increased urban and agricultural development in coastal environments, estuaries are among the most modified and threatened aquatic ecosystems.
Donázar Aramendía, Iñigo Javier, García Asencio, Isabel, García Gómez, José Carlos, Megina Martínez, César, Miró Recio-Mensaque, Juan Miguel, Sánchez Moyano, Juan Emilio   +5 more
core   +1 more source

HRS Degradation‐Induced Nicotinamide Deficiency in Placental Extracellular Vesicles Triggers Preeclampsia by Disrupting Maternal‐Fetal Immune Homeostasis

Advanced Science, EarlyView.
This study shows that lower NAM levels in PE‐derived pEVs correlate with disease severity. NAM‐deficient pEVs reduce Th1 and Th17 inhibition, leading to PE‐like symptoms. NAM in pEVs inhibits Th1 via SIRT1 and Th17 via macrophages. Reduced NAM in PE‐EVs is due to decreased HRS expression in trophoblasts, resulting from elevated HSP27.
Haiyi Fei, Yuhan Lin, Xiu Liu, Xiaohong Zhu, Xiaowen Lu, Zhan Shi, Fan Jia, Shiqian Xu, Ling Fang, Lingling Jiang, Songying Zhang   +10 more
wiley   +1 more source

Variation of stream metabolism along a tropical environmental gradient

Journal of Limnology, 2018
Stream metabolism is affected by both natural and human-induced processes. While metabolism has multiple implications for ecological processes, relatively little is known about how metabolic rates are influenced by land use in tropical streams.
Wesley A. Saltarelli, Walter K. Dodds, Flavia Tromboni, Maria do Carmo Calijuri, Vinicius Neres-Lima, Carlos E. Jordão, Julio C.P. Palhares, Davi G.F. Cunha   +7 more
doaj   +1 more source

Species assembly in model ecosystems, I: Analysis of the population model and the invasion dynamics [PDF]

, 2010
Recently we have introduced a simplified model of ecosystem assembly (Capitan et al., 2009) for which we are able to map out all assembly pathways generated by external invasions in an exact manner. In this paper we provide a deeper analysis of the model,
Alonso, Bascompte, Bastolla, Bastolla, Bender, Borrvall, Capitán, Case, Case, Drake, Dunne, Eklöf, Elton, Etienne, Fukami, Fukami, Hewitt, Hofbauer, Huang, Hubbell, José A. Capitán, José A. Cuesta, Karlin, Kokkoris, Law, Law, Law, Levine, Lewis, Liebhold, Lässig, MacArthur, MacArthur, Martinez, May, May, McCann, Morton, Odum, Pimm, Pimm, Post, Rezende, Roughgarden, Turelli, Warren, Xie   +46 more
core   +7 more sources

Hepatocyte Mettl3 Deficiency Drives Primary Sclerosing Cholangitis and Liver Fibrosis via Cholangiocyte‐Macrophage Crosstalk

Advanced Science, EarlyView.
Schematic illustration demonstrating that hepatic Mettl3 depletion significantly elevates the secretion of Mif and Csf1. This elevation facilitates Trem2+ macrophage infiltration and triggers cholangiocyte remodeling through the Spp1‐Cd44 interaction, resulting in spontaneous PSC development in vivo.
Wenting Pan, Yuting Yong, Yuanshuai Li, Gaona Shi, Min Zhang, Lingfei Wan, Yue Zhao, Wenling Zhan, Yanli Lin, Qiaozhen Qin, Xupeng Chen, Yanli Ni, Haixu Chen, Wenzai Shi, Xiaomeng Guo, Juan Chen, Shuchen Liu, Youliang Wang, Bing Liu, Xinlong Yan   +19 more
wiley   +1 more source

Population growth potential of rotifers from a high altitude eutrophic waterbody, Madín reservoir (State of Mexico, Mexico): The importance of seasonal sampling

Journal of Limnology, 2018
To understand the population growth potential of different species of rotifers in nature, field collections through seasons are essential. We sampled zooplankton (and measured selected physicochemical variables) from the Madín reservoir, a high altitude ...
Rosa Martha Moreno-Gutiérrez, S.S.S. Sarma, Alma Socorro Sobrino-Figueroa, S. Nandini   +3 more
doaj   +1 more source

Long-term spatial-temporal monitoring of eutrophication in Lake Burdur using remote sensing data

Water Science and Technology, 2023
Lake eutrophication continues to be one of the major environmental challenges in lakes worldwide. This study is about using a remote sensing approach to monitor long-term chlorophyll-a (Chl-a) concentrations and the trophic state index (TSI) in Lake ...
Gizem Tuna Tuygun, Serra Salgut, Alper Elçi   +2 more
doaj   +1 more source

Deleting species from model food webs [PDF]

, 2004
We use food webs generated by a model to investigate the effects of deleting species on other species in the web and on the web as a whole. The model incorporates a realistic population dynamics, adaptive foragers and other features which allow for the ...
Abrams, Abrams, Arditi, Borrvall, Caldarelli, Carlton, Drake, Drossel, Dunne, Elton, Fowler, Fretwell, Fujii, Jordán, Jordán, Law, Lockwood, Lubchenco, Lundberg, MacArthur, Mathsoft Inc., May, May, McCullagh, Milner-Gulland, Morton, Naeem, Navarrete, Odum, Paine, Paine, Pimm, Pimm, Power, Quince, Quince, Shigesada, Solé, Ulanowicz, Ulanowicz, Walker, Yodzis, Yodzis, Yodzis   +43 more
core   +3 more sources

Unraveling the Morphological and Functional Maturation Mechanisms Underlying Human Neural Development Using iPSCs‐Derived Neuronal Model

Advanced Science, EarlyView.
Using human induced pluripotent stem cells (hiPSCs)‐derived neuronal model, Tian and colleagues reveal that voltage‐gated calcium channels Cav1.2 and Cav1.3, and their mediated calcium ion influx, are essential for early morphogenesis of human neuronal development, while ECEL1 underlies human neuronal functional developmental maturation through CALM3 ...
Yue Tian, Yi‐Chun Ou, Zi‐Xian Zhang, Jie Cai, Si‐Qing Cai, Guo‐Gang Xing   +5 more
wiley   +1 more source