Changes in liana community structure and functional traits along a chronosequence of selective logging in a moist semi-deciduous forest in Ghana

2019 ◽  
Vol 13 (1) ◽  
pp. 75-84
Author(s):  
Patrick Addo-Fordjour ◽  
Bismark Ofosu-Bamfo ◽  
Francis Kwofie ◽  
Nukunu Akyea-Bobi ◽  
Fidaus A. Rahman ◽  
...  
2014 ◽  
Vol 17 (6) ◽  
pp. 1697-1712 ◽  
Author(s):  
M. S. Dechoum ◽  
T. T. Castellani ◽  
S. M. Zalba ◽  
M. Rejmánek ◽  
N. Peroni ◽  
...  

Biologia ◽  
2013 ◽  
Vol 68 (3) ◽  
Author(s):  
Jitka Farská ◽  
Kristýna Prejzková ◽  
Josef Rusek

AbstractStructure and density of soil microarthropod communities (Oribatida and Collembola) were studied in one natural beech forest and one spruce monoculture planted on a former beech stand in South Bohemia (Czech Republic). The spruce monoculture establishment increased microarthropod densities (93,000 ind. m−2 in the natural beech forest vs. 400,540 ind. m−2 in the spruce monoculture for Oribatida; 66,360 ind. m−2 in the natural beech forest vs. 136,360 ind. m−2 in the spruce monoculture for Collembola); additionally, it changed greatly the community structure in terms of species composition and functional traits. In the spruce monoculture, groups susceptible to disturbance were suppressed. The oribatid trophic structure changed as well with opportunistic herbifungivorous species increasing in the monoculture at the expense of fungivorous species. Similarly, hemiedaphic collembolans increased in the monoculture at the expense of euedaphic species. We conclude that the “functional approach” seems to be fruitful in revealing soil fauna response to environmental change.


2003 ◽  
Vol 28 (6) ◽  
pp. 747-757 ◽  
Author(s):  
Keith S. Summerville ◽  
Thomas O. Crist ◽  
Jonathan K. Kahn ◽  
Jon C. Gering

Check List ◽  
2017 ◽  
Vol 13 (3) ◽  
pp. 2154
Author(s):  
Paramita Basu ◽  
Gautam Aditya ◽  
A. K. Sanyal

We focused on the coleopteran species assemblage in a tropical deciduous forest in the Bethuadahari Wildlife Sanctuary, West Bengal, India. During a 2-year survey, we collected 56 species belonging to 13 families of Coleoptera, in varying relative abundance. Among the species, 15 belong to the family Chrysomelidae, nine to the Staphyllinidae, and four to the Coccinellidae. Our results substantiate the importance of the Bethuadahari Wildlife Sanctuary for the conservation of coleopteran insects.


Author(s):  
Р.Н. Минниханов ◽  
Х.Г. Мусин

Разработана и внедрена концепция воспроизводства и лесопользования в малолесных регионах. В основе концепции лежит этапность выполнения комплекса лесохозяйственных мероприятий. Как начальный импульс появление и накопление самосева ели и пихты под пологом мягколиственных лесов на первом этапе продолжительностью 30–40 лет, позволяет с незначительными экономическими затратами получить в последующем наибольший экологический эффект во всем природном комплексе. При максимальном сохранении появившегося подроста и его дальнейшем накоплении и росте на втором этапе с внедрением приемлемых здесь вариантов сплошнолесосечных, постепенных, выборочных рубок и рубок ухода за лесами формируются лиственные насаждения с подростом ели и пихты. На третьем этапе комплексными рубками формируются лиственные древостои со вторым ярусом хвойных. Четвертый этап – окончательный. В сформировавшемся хвойно-лиственном древостое комплексными рубками поддерживается разновозрастность древостоя. Общая продолжительность этапов ограничивается 60–70 годами. Как в теоретическом плане, так и в практическом аспекте концепция имеет свойственные только ей отличительные черты, охватывающие сложный комплекс взаимосвязанных и взаимообусловленных внутренних связей леса и внешних их проявлений. Управление ими и является задачей рационального и неистощительного пользования лесами. Developed and implemented the concept of reproduction and forest management in sparsely wooded areas. The concept is the stages of implementation of the complex of forestry activities. As the initial impetus to the emergence and accumulation of self-seeding spruce and fir under a canopy of softwood forests in the first stage, lasting 30–40 years, and allows a minor economic cost to obtain the subsequent greatest environmental effect in the whole natural complex. With the maximum preservation of undergrowth appearing and its further accumulation and growth at the second stage with the introduction of acceptable options here clear, gradual, selective logging and thinning in forests formed of deciduous vegetation, with undergrowth of spruce and fir. In the third stage integrated logging a deciduous forest stands are formed with the second coniferous layer. Fourth stage the final. In established coniferous-deciduous forest integrated logging is supported by the uneven stand. The total duration of stages is limited to 60–70 years. In theoretical terms, and in practical aspect of the concept has peculiar only to her features, covering a complex set of interrelated and interdependent internal relationships of the forest and their external manifestations. Management is rational and sustainable management of forests.


2009 ◽  
Vol 1 (2) ◽  
pp. 227-230
Author(s):  
Poonam Khurana

The present study deals with quantitative analysis of vegetation of forest area in Hastinapur, India. A total 3 sites were selected for the study. The values of density and total basal area for different species ranged from 0.5 Ind100m-2 to 2.2 and 16.50 cm2tree-1 to 1055.0cm2tree-1. Most of the species on different sites were randomly and regularly distributed, none of the species were found with contagious distribution. The values of Cd and H’ were ranged from 0.003 to 0.035 and 0.000 to 0.014.


2019 ◽  
Author(s):  
Jason Bertram ◽  
Erica A Newman ◽  
Roderick Dewar

Aim: Maximum entropy (MaxEnt) models promise a novel approach for understanding community assembly and species abundance patterns. One of these models, the "Maximum Entropy Theory of Ecology" (METE) reproduces many observed species abundance patterns, but is based on an aggregated representation of community structure that does not resolve species identity or explicitly represent species-specific functional traits. In this paper, METE is compared to "Very Entropic Growth" (VEG), a MaxEnt model with a less aggregated representation of community structure that represents species (more correctly, functional types) in terms of their per capita metabolic rates. We examine the contribution of metabolic traits to the patterns of community assembly predicted by VEG and, through aggregation, compare the results with METE predictions in order to gain insight into the biological factors underlying observed patterns of community assembly. Innovation: We formally compare two MaxEnt-based community models, METE and VEG, that differ as to whether or not they represent species-specific functional traits. We empirically test and compare the metabolic predictions of both models, thereby elucidating the role of metabolic traits in patterns of community assembly. Main Conclusions: Our analysis reveals that a key determinant of community metabolic patterns is the "density of species" distribution, defined as the intrinsic number of species with metabolic rates in a given range that are available to a community prior to filtering by environmental constraints. Our analysis suggests that appropriate choice of of the density of species in VEG may lead to more realistic predictions than METE, for which this distribution is not defined, and thus opens up new ways to understanding the link between functional traits and patterns of community assembly.


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