Results 21 to 30 of about 7,354,206 (251)

Species Identity and Initial Size Rather Than Neighborhood Interactions Influence Survival in a Response-Surface Examination of Competition

Frontiers in Plant Science, 2020
To measure intraspecific and interspecific interaction coefficients among tree species is the key to explore the underlying mechanisms for species coexistence and biodiversity maintenance in forests.
Zhiqiang Shen, Yuanzhi Li, Zhiyi Chen, Nianxun Xi, Wenqi Luo, Qing He, Songling Liu, Wei Lin, Xianhui Zhu, Suqin Fang, Youshi Wang, Buhang Li, Chengjin Chu   +12 more
doaj   +1 more source

Habitat heterogeneity and biotic interactions mediate climate influences on seedling survival in a temperate forest

Forest Ecosystems, 2023
Seedling stage has long been recognized as the bottleneck of forest regeneration, and the biotic and abiotic processes that dominate at seedling stage largely affect the dynamics of forest. Seedlings might be particularly vulnerable to climate stress, so
Haikun Liu, Hang Shi, Quan Zhou, Man Hu, Xiao Shu, Kerong Zhang, Quanfa Zhang, Haishan Dang   +7 more
doaj   +1 more source

Predation and fragmentation portrayed in the statistical structure of prey time series

BMC Ecology, 2009
Background Statistical autoregressive analyses of direct and delayed density dependence are widespread in ecological research. The models suggest that changes in ecological factors affecting density dependence, like predation and landscape heterogeneity ...
Topping Chris J, Hendrichsen Ditte K, Forchhammer Mads C   +2 more
doaj   +1 more source

Estimating the functional form for the density dependence from life history data [PDF]

, 2008
Two contrasting approaches to the analysis of population dynamics are currently popular: demographic approaches where the associations between demographic rates and statistics summarizing the population dynamics are identified; and time series approaches
Tavecchia, G., Pelletier, F., Coulson, Timothy, Coulson, T, Pilkington, J.G., Stenseth, N. C., Stenseth, NC, Childs, DZ, Ezard, T. H. G., Clutton-Brock, TH, Ezard, T.H.G., Childs, D.Z., Pemberton, J. M., Clutton-Brock, T.H., Childs, D. Z., Ezard, TH, Ezard, THG, Crawley, M.J., Stenseth, N.C., Kruuk, LEB, Pilkington, J. G., Kruuk, L. E. B., Coulson, T., Kruuk, L.E.B., Pemberton, J.M., Crawley, MJ, Pilkington, JG, Pelletier, F, Clutton-Brock, T. H., Crawley, M. J., Pemberton, JM, Tavecchia, G, Kruuk, LE, Pemberton, Josephine M, Clutton-Brock, Tim H, Coulson, Tim, Kruuk, Loeske, Tavecchia, Giacomo, Pilkington, Jill G.   +38 more
core   +1 more source

Seasonal variation of environment and conspecific density-dependence effects on early seedling growth of a tropical tree in semi-arid savannahs

Global Ecology and Conservation, 2023
Different mechanisms have been proposed to explain species coexistence and maintainance of local species diversity in tree communities. Among the proposed mechanisms, negative density dependence theory (NDD) predicts that seedling growth rate declines at
Sylvanus Mensah, Christa J.M. Lokossou, Achille E. Assogbadjo, Romain Glèlè Kakaï   +3 more
doaj   +1 more source

Basic physical properties of spruce wood (Picea abies Karst) from plantations [PDF]

Glasnik Šumarskog Fakulteta: Univerzitet u Beogradu, 2007
The basic physical properties of spruce wood from plantations in the surroundings of Banja Luka were researched. The dependence of growth ring diameter and wood density, density, volume porosity, shrinkage, fibre saturation point and absorption of ...
Šoškić Borislav, Govedar Zoran, Todorović Nebojša, Petrović Danijela   +3 more
doaj   +1 more source

Switching from negative to positive density-dependence among populations of a cobble beach plant

, 2008
Interactions among species occur across a continuum from negative to positive and can have a critical role in shaping population and community dynamics.
Goldenheim, William M., Irving, Andrew D., Bertness, Mark D., 1949-   +2 more
core   +2 more sources

Effects of Forest Fragment Area on Interactions Between Plants and Their Natural Enemies: Consequences for Plant Diversity at Multiple Spatial Scales

Frontiers in Forests and Global Change, 2020
Density-dependent interactions between plants and their natural enemies, including fungal pathogens and insect herbivores, help maintain plant species coexistence and diversity at local scales (α-diversity). However, turnover in plant species composition
Ashwin Viswanathan, Jaboury Ghazoul, Owen T. Lewis, Ganesh Honwad, Robert Bagchi   +4 more
doaj   +1 more source

Increasing water availability strengthens conspecific negative density dependence but weakens heterospecific negative density dependence in Japanese old-growth forests

Forest Ecosystems
The relative magnitudes of negative conspecific and heterospecific density dependence (CDD and HDD) have been widely used to explain tree species diversity.
Rongxu Shan, Han Y.H. Chen, Ganxin Feng, Masumi Hisano, Zilong Ma   +4 more
doaj   +1 more source

Sources of the High-Latitude Thermospheric Neutral Mass Density Variations [PDF]

Journal of Astronomy and Space Sciences, 2010
We investigate the sources of the variation of the high-latitude thermospheric neutral mass density depending on the interplanetary magnetic field (IMF) conditions.
Young-Sil Kwak, Arthur Richmond, Yue Deng, Byung-Ho Ahn, Kyung-Suk Cho   +4 more
doaj   +1 more source