Results 61 to 70 of about 636,994 (304)

Selective and clear-cut logging have varied imprints on tree community structure in a moist semi-deciduous forest in Ghana

Heliyon, 2022
Logging-induced disturbance can be an important agent of change in tropical forests. Understanding the relative impacts of specific logging regimes on tree community structure is essential for forest management and biodiversity conservation.
Patrick Addo-Fordjour, Isaac Sarfo Afram, Jennifer Oppong   +2 more
doaj   +1 more source

Old-growth forests: what do we know about their ecology and management in the Southwest and Rocky Mountain Regions? [PDF]

, 1992
This paper reviews the science and management of old-growth forests and summarizes discussions among 30 participants at a workshop in Portal, Arizona, March 9-13, 1992.
Covington, W.W., Kaufmann, M.R., Moir, W.H.   +2 more
core  

Maternal Preconception Antibiotic Exposure Disrupts Microbial Succession: A Transgenerational Risk for Offspring Gut Mucosal Immaturity and Colitis Susceptibility

Advanced Science, EarlyView.
This study reveals that maternal antibiotic exposure prior to conception disrupts intergenerational gut microbial succession. By enhancing maternal‐offspring microbial transmission, altering microbial developmental trajectories and increasing selective pressures during community assembly, these disturbances lead to persistent gut mucosal immaturity and
Yuzhu Chen, Ruqiao Duan, Cunzheng Zhang, Gaonan Li, XiaoLin Ji, Qi Zhang, Fei Pei, Kun Wang, Liping Duan   +8 more
wiley   +1 more source

Burn to Save, or Save to Burn? Management May Be Key to Conservation of an Iconic Old-Growth Stand in California, USA

Fire
Seasonally dry mature and old-growth (MOG) forests in the western USA face increasing threats from catastrophic wildfire and drought due to historical fire exclusion and climate change.
JonahMaria Weeks, Bryant Nagelson, Sarah Bisbing, Hugh Safford   +3 more
doaj   +1 more source

Smallholder agriculture results in stable forest cover in riverine Amazonia

Environmental Research Letters, 2021
Recent studies point to a rapid increase in small-scale deforestation in Amazonia. Where people live along the rivers of the basin, customary shifting cultivation creates a zone of secondary forest, orchards and crop fields around communities in what was
Oliver T Coomes, Margaret Kalacska, Yoshito Takasaki, Christian Abizaid, Tristan Grupp   +4 more
doaj   +1 more source

Modelling the impacts of wildfire on the viability of metapopulations of the endangered Australian species of arboreal marsupial, Leadbeater's Possum [PDF]

, 1995
Catastrophic events such as intensive wildfires have a major effect on the dynamics of some wildlife populations. In this investigation, the computer package ALEX (Analysis of the Likelihood of EXtinction), was used to simulate the impacts of wildfires ...
Adams, Ambrose, Ashton, Ashton, Banks, Berger, Boyce, Bronmark, Burgman, Catling, Clark, D.B. Lindenmayer, Department of Conservation, Forest and Lands, Durant, Ewens, Ferson, Ginzburg, Giplin, Government of Victoria, Griffiths, H.P. Possingham, Harris, Inions, Jeremiah, Lacy, Lacy, Lacy, Land Conservation Council, Lindenmayer, Lindenmayer, Lindenmayer, Lindenmayer, Lindenmayer, Lindenmayer, Lindenmayer, Lindenmayer, Lindenmayer, Lindenmayer, Lindenmayer, Lindenmayer, Lindenmayer, Lindenmayer, Lindenmayer, Lindenmayer, Lindenmayer, Lindenmayer, Lindenmayer, Lindenmayer, Lindenmayer, Lindenmayer, Macfarlane, Maguire, McHugh, Menges, Mount, Murphy, Newsome, Noble, Noble, Possingham, Possingham, Possingham, Possingham, Quinn, Quinn, Seagle, Shaffer, Shaffer, Simberloff, Simberloff, Simberloff, Smith, Smith, Smith, Smith, Smith, Smith, Smith, Soulé, Squire, Stacey, Thomas, Weiss   +82 more
core   +1 more source

Gemella morbillorum Promotes Colorectal Carcinogenesis: LPBDCP‐Mediated Invasion Activates Ras Signaling and Destabilizes p53

Advanced Science, EarlyView.
ABSTRACT Gut microbiota dysbiosis promotes colorectal cancer (CRC) tumorigenesis. A global fecal metagenomic analysis identified Gemella morbillorum as a key contributor to the CRC‐associated microbiota. Fluorescence in situ hybridization revealed that Gemella morbillorum is enriched in CRC tumor tissues compared to adjacent normal tissues.
Zhen Wang, Jia Zhang, Haojie Lu, Jingjing Ni, Shuaishuai Yang, Yuting Shi, Shuo Zhang, Pei Zhang, Li Liu   +8 more
wiley   +1 more source

Investigating LiDAR Metrics for Old-Growth Beech- and Spruce-Dominated Forest Identification in Central Europe

Remote Sensing
Old-growth forests are essential for maintaining biodiversity, as they are formed by the complexity of diverse forest structures, such as broad variations in tree height and diameter (DBH) and conditions of living and dead trees, leading to various ...
Devara P. Adiningrat, Andrew Skidmore, Michael Schlund, Tiejun Wang, Haidi Abdullah, Marco Heurich   +5 more
doaj   +1 more source

Abiotic and Biotic Soil Characteristics in Old Growth Forests and Thinned or Unthinned Mature Stands in Three Regions of Oregon [PDF]

, 2012
We compared forest floor depth, soil organic matter, soil moisture, anaerobic mineralizable nitrogen (a measure of microbial biomass), denitrification potential, and soil/litter arthropod communities among old growth, unthinned mature stands, and thinned
Agee, Andrew Moldenke, Buddle, David Perry, Edmonds, Hagar, Hayes, Jandl, Lorenz, Luyssaert, Légaré, Moritz, Nielsen, Palmroth, Robert Griffiths, Sabine, Silver, Spies, Stephanie Madson, Vogt, Waring, Winter   +21 more
core   +1 more source

Multicohort Validation of Gut Microbiome Signatures for Cholangiocarcinoma Diagnosis and Functional Characterization of Bifidobacterium Pseudocatenulatum

Advanced Science, EarlyView.
This study analyzes gut bacteria in cholangiocarcinoma patients, revealing distinct microbial signatures that enable accurate disease detection. Species‐based diagnostic models achieved over 98% accuracy in identifying cholangiocarcinoma and distinguished it from other liver diseases. The research demonstrates that specific beneficial bacteria suppress
Benchen Rao, Jianwen Jiang, Ruiqing Zhang, Dongya Zhang, Chenchen Zhang, Ang Li, Haifeng Lu, Hua Zhang, Lin Zhou, Wenzhi Guo, Peihao Wen, Jianfeng Xue, Jie Pan, Tuerganaili Aji, Zhou Lan, Xianzhi Jiang, Shusen Zheng, Zujiang Yu, Zhigang Ren   +18 more
wiley   +1 more source