Results 31 to 40 of about 217,153 (254)
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 +7 more
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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 +2 more
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Negative density-dependent emigration of males in an increasing red deer population [PDF]
Proceedings of the Royal Society B: Biological Sciences, 2009 In species with polygynous mating systems, females are regarded as food-limited, while males are limited by access to mates. When local density increases, forage availability declines, while mate access for males may increase due to an increasingly female-biased sex ratio.
Leif Egil, Loe +3 more
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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 +3 more
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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 +3 more
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Bias in the detection of negative density dependence in plant communities
Ecology Letters, 2019 AbstractRegression dilution is a statistical inference bias that causes underestimation of the strength of dependency between two variables when the predictors are error‐prone proxies (EPPs). EPPs are widely used in plant community studies focused on negative density‐dependence (NDD) to quantify competitive interactions.
Matteo Detto +3 more
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Direct negative density‐dependence in a pond‐breeding frog population
Ecography, 2015 Understanding population dynamics is critical for the management of animal populations. Comparatively little is known about the relative importance of endogenous (i.e. density‐dependent) and exogenous (i.e. density‐independent) factors on the population dynamics of amphibians with complex life cycles.
Băncilă, Raluca I +4 more
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Spatially heterogeneous populations with mixed negative and positive local density dependence [PDF]
Theoretical Population Biology, 2016 Identifying the steady states of a population is a key issue in theoretical ecology, that includes the study of spatially heterogeneous populations. There are several examples of real ecosystems in patchy environments where the habitats are heterogeneous in their local density dependence.
Diána Knipl, Gergely Röst
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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 +4 more
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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 +4 more
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