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Spatial correlation of pit and mound topography with canopy gaps in a virgin mixed beech forest, northern Iran

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Abstract

In a reserved forest parcel in a virgin eastern Hyrcanian mixed beech forest, 80 ha was surveyed to determine the pit and mound topography, canopy gaps and dead trees. The aim was to investigate the spatial patterns and correlation of pit and mound features with canopy gaps. Seventy-five canopy gaps and 61 pit and mound features were identified. The univariate first order nearest neighbor (RCE) and bivariate second order test (Ripley’s K) statistic were applied. RCE statistics highlighted a general aggregation pattern for canopy gaps and pits and mounds, while pits and mounds alone were more clumped. Distances between canopy gaps were 130 m average, whereas distances between pit and mound features and dead trees were 60 and 78 m, respectively. Spatial positive correlation of canopy gaps with pits and mounds were observed with all distances. The result of spatial correlations between canopy gaps with pits and mounds confirmed that windthrows cause micro successions in fallen tree ecosystem-scale correlated with gap phase dynamics in the forest community-scale.

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Notes

  1. Complete Spatial Randomness (CSR) is a standard model, describes a point process and states that the events follow a homogeneous Poisson Process over the study region (Maimon and Rokach 2010).

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Acknowledgements

This paper is made possible through the help of Dr. Kooch and Ph.D. student Mrs. Moghimian for her efforts at the M.Sc. level. This project would have been impossible without the support of GAUSNR (Gorgan University of Agricultural Sciences and Natural Resources) grant. Also, I would like to thanks Dr. Ron Ayling and Dr. Chai for editing my paper.

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Authors and Affiliations

  1. Faculty of Forest Sciences, Gorgon University of Agricultural Sciences and Natural Resources, Gorgan, Iran

    Hashem Habashi

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  1. Hashem Habashi
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Correspondence to Hashem Habashi.

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Project funding: This study was supported by Gorgan University of Agricultural Sciences and Natural Resources.

The online version is available at http://www.springerlink.com

Corresponding editor: Chai Ruihai.

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Habashi, H. Spatial correlation of pit and mound topography with canopy gaps in a virgin mixed beech forest, northern Iran. J. For. Res. 30, 295–303 (2019). https://doi.org/10.1007/s11676-018-0604-y

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  • DOI: https://doi.org/10.1007/s11676-018-0604-y

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