Natural Regeneration of Indigenous Tree Species in Broussonetia papyrifera Invaded Sites in Pra -Anum Forest Reserve

Broussonetia papyrifera invasion poses a serious threat to indigenous tree species in Ghana. Many conservation scientists therefore emphasize the need to control, manage, and possibly eradicate the species. However, attempts at control and management require adequate knowledge of its ecology and impact on invaded ecosystems. Employing a complete randomized design with twenty-four (24) 20 m × 20 m plots, 12 each on invaded and uninvaded sites, this study assesses the indigenous species regeneration potential under Broussonetia papyrifera-invaded sites in the Pra-Anum forest reserve. The study provides evidence of the negative impact of Broussonetia on the regenerative capacity of the reserve, as 335 seedlings per 4800 m2 distributed over 43 species were recorded on the uninvaded site compared to 156 seedlings per 4800 m2 distributed over 31 species on the invaded site. The study, however, observed some level of resilience of species belonging to the Ulmaceae and Lecythidaceae families, as they appeared fairly represented on the invaded site. Floristic diversity was also observed to be negatively impacted by Broussonetia invasion as mean Shannon and Simpson index values of 2.39 ± 0.71 and 0.89 ± 0.08 and 1.39 ± 0.24 and 0.64 ± 0.08 were recorded on the uninvaded and invaded sites, respectively. Furthermore, the Broussonetia invasion compromised the productivity of the forest ecosystem as 4.9 ± 1.61 mean economic tree species per 400 m2 plot were recorded on the invaded site compared to 13.8 ± 1.28 per 400 m2 plot on the uninvaded site. The study, therefore, concludes that Broussonetia invasion poses a serious threat to the integrity and productivity of the Pra-Anum forest reserve. Consequently, the study recommends the control of the spread of the species to protect the integrity of the Pra-Anum forest reserve. Also, restoration efforts in invaded areas of the reserve could consider the use of native species belonging to the Ulmaceae and Lecythidaceae families as they appear to be resilient to Broussonetia invasion.

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Fluxes in litter decomposition in three selected indigenous species and teak in a converted rainforest ecosystem in southwestern Nigeria

Bangladesh Journal of Scientific and Industrial Research ◽

10.3329/bjsir.v47i3.13069 ◽

2012 ◽

Vol 47 (3) ◽

pp. 333-338

Author(s):

AF Ojo ◽

O Kadeba ◽

J Kayode

Keyword(s):

Litter Decomposition ◽

Tree Species ◽

Soil Nutrient ◽

Tectona Grandis ◽

Indigenous Species ◽

Southwestern Nigeria ◽

Forest Reserve ◽

Nutrient Pool ◽

Indigenous Tree Species ◽

Litter Nutrients

The study investigated the rate of litter decomposition in three prominent litter releasing indigenous tree species in the natural rainforest and an exotic species Teak, Tectona grandis Lim., in the adjacent plantation in Akure forest reserve, southwestern Nigeria. Results showed that teak had the highest litter decomposition rate and Mansonia altissima the least. There was no relationship between the rates of decomposition among all species examined. The implication is that teak litter had the highest probability of releasing litter nutrients into the soil nutrient pool than any of the selected indigenous tree species while Mansonia altissima had the least. However all species had high decomposition rates. This implies that soil fertility will be maintained if any of the tree species were to be used for monoculture plantations. DOI: http://dx.doi.org/10.3329/bjsir.v47i3.13069 Bangladesh J. Sci. Ind. Res. 47(3), 333-338 2012

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Growth of tropical tree species and absorption of copper in soil artificially contaminated

Brazilian Journal of Biology ◽

10.1590/1519-6984.07114 ◽

2015 ◽

Vol 75 (4 suppl 1) ◽

pp. 119-125 ◽

Cited By ~ 3

Author(s):

R. F. Silva ◽

R. Andreazza ◽

C. Da Ros ◽

A. Dellai ◽

R. J. S. Jacques ◽

...

Keyword(s):

Native Species ◽

Negative Impact ◽

Contaminated Sites ◽

Indigenous Species ◽

Forest Species ◽

Tropical Tree Species ◽

Efficient Alternative ◽

Copper Contaminated ◽

Different Doses

Abstract Reclamation of copper contaminated sites using forest species may be an efficient alternative to reduce the negative impact. The aim of this study was to quantify the growth and evaluate the quality of seedlings of native species at different doses of copper in the soil. The experimental design was completely randomized, with seven replications in a factorial arrangement (3×9), using three indigenous species of plants (Anadenanthera macrocarpa, Mimosa scabrella and Apuleia leiocarpa) and nine doses of copper in the soil (0, 60, 120, 180, 240, 300, 360, 420 and 480 mg kg–1).The experiment was carried out in a greenhouse which the seedlings were grown for 180 days. The experimental units were plastic pots of 125 cm3 filled with Oxisol. The results indicated that the levels of copper applied to the soil decreased the quality of seedlings and growth of Apuleia leiocarpato a lesser extent compared with Mimosa scabrella and Anadenanthera macrocarpa. Anadenanthera macrocarpa was the forest species that resulted in the lowest copper translocation from roots to shoots. In addition, the Apuleia leiocarpa exhibited high resistance and tolerance for copper in the soil and also, it is highlighted an ability for copper phytoremediation.

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Land-use/Land-cover Changes and Deforestation in Effan Forest Reserve, Kwara State, Nigeria

10.20944/preprints202108.0356.v1 ◽

2021 ◽

Author(s):

Adesoji Akinwumi Adeyemi ◽

Farouq Maku Owolabi

Keyword(s):

Remote Sensing ◽

Land Use ◽

Land Cover ◽

Tree Species ◽

Land Cover Changes ◽

Indigenous Species ◽

Land Use Land Cover ◽

Vitellaria Paradoxa ◽

Forest Protection ◽

Forest Reserve

Remote sensing/GIS techniques are a versatile tool for x-raying serial forest structural changes in retrospect. It would be impossible to evaluate past occurrences and changes in forest extents in past decades at Effan Forest Reserve without non-conventional means. Therefore, we adopted remote sensing technology using Landsat images to evaluate land-use change and degradation rates in the area with a view to ascertaining causal factors for possible minimization of forest degradation in Effan Forest Reserve. Land-use/land-cover changes were analyzed using USGS-Landsat TM and ETM images of 1987, 2002, 2014 and 2019. Field-data were collected using handheld GPS receiver and spatial statistical analyses were conducted using the ground control points (GCPs). For inventory data, a systematic sampling technique was adopted using ten 1.05 km-transects at 500 m intervals. A total of 50 sample plots of 50 × 50 m were used. All tree species with Dbh ≥10 cm were enumerated. Nineteen tree species in ten families were encountered with Vitellaria paradoxa as the most-frequently occurring species in the area. IUCN-listed endangered Pterocarpus erinaceus, hitherto abundant in the area, was rarely encountered during the survey, while Vitellaria paradoxa is gradually shrinking, going the relative abundance in the area. The result further showed that primary and secondary forests decreased considerably by 258.03 ha (46.72%) and 9.18 ha (3.63%), respectively, with a total forest loss of 50.3% in 32 years (8.4 hayr-1, 1.6% per annum). While forest plantation size doubled by 369.72 ha within the period. This is worrisome as the remaining fragmented forests appeared to be on the decline, except the riparian vegetation, due to inaccessibility to the riparian by loggers. It thus appeared that forest protection approaches were ineffective. Increased protection efforts could save this forest reserve, and the concerned authority should consider a focused-enrichment planting involving indigenous species for ecosystem-repair.

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Cardinal temperatures and thermal requirements for the initial development of two Brazilian native species

Pesquisa Agropecuária Brasileira ◽

10.1590/s1678-3921.pab2019.v54.00525 ◽

2019 ◽

Vol 54 ◽

Cited By ~ 2

Author(s):

Mábele de Cássia Ferreira ◽

Fabrina Bolzan Martins ◽

Gabriel Wilson Lorena Florêncio ◽

João Pedro Guimarães Cândido Silva ◽

Liliana Auxiliadora Avelar Pereira Pasin

Keyword(s):

Tree Species ◽

Native Species ◽

Rapid Development ◽

Initial Development ◽

Thermal Requirements ◽

Randomized Design ◽

Sowing Dates ◽

Thermal Amplitude ◽

Maximum Temperatures ◽

Cardinal Temperatures

Abstract: The objective of this work was to estimate the cardinal temperatures and to quantify the thermal requirements for the initial development of seedlings of the native tree species Citharexylum myrianthum and Bixa orellana. A field experiment was carried out in a completely randomized design, in a 2?12 factorial arrangement (2 tree species and 12 sowing dates), with five replicates. The base, optimum, and maximum temperatures for the development of C. myrianthum were 11.4, 18.1, and 36.6°C, and, for B. orellana, 12.0, 18.4, and 46.4°C. The thermal requirements for the development of C. myrianthum was 66.7°C day per leaf, and, for B. orellana, 82.5°C day per leaf. In the initial development, B. orellana shows a large thermal amplitude and is tolerant to extreme temperatures, while C. myrianthum shows a large thermal amplitude, but a lower thermal requirement and a more rapid development than B. orellana.

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Buddha Bihar (Kiyang) based traditional model for tree diversity conservation in Rangamati Hills, Bangladesh

Journal of Biodiversity Conservation and Bioresource Management ◽

10.3329/jbcbm.v4i1.37874 ◽

2018 ◽

Vol 4 (1) ◽

pp. 27-34

Author(s):

M Mohiuddin ◽

AK Paul

Keyword(s):

Biodiversity Conservation ◽

Land Tenure ◽

Tree Species ◽

Local Community ◽

Local Level ◽

Plant Conservation ◽

Bird Conservation ◽

Indigenous Species ◽

Tribal People ◽

Indigenous Tree Species

This paper describes Buddha Bihar (Kiyang) based biodiversity conservation of Nirbanpur in Rangamati Hill District of Bangladesh. Rangamati is the native of the tribal people specially the Chakma and they are the followers of the Bhudda religion. This Bihar comprised of 300 acres of hilly land and maintaining natural patches having 76 indigenous tree species. Most of the tribal people of this district belong to Buddha religion and they strongly believe in the biodiversity conservation around their religious institute and most of them are situated at hill top of the deep forest areas. This institution is maintained by the religious leaders locally called as Bantheya and the local community people have great respect for them. Most of the Bantheyas are conserving biodiversity in traditional way which is unique model for local level biodiversity conservation and local people also consider these plants as taboos or secrete trees. Bihar management committee maintains some traditional rules in plant conservation, but now they are leaned towards commercial plantation. BFRI scientists try to motivate them towards plantation indigenous species by awareness meeting. The seedlings of 32 indigenous tree species were planted in the Bihar area which has enhanced the diversity of flora and fauna. A biodiversity conservation model having four pillars has been developed on consultation with the community and religion leaders. The theme of pillars are land tenure, traditional knowledge, awareness and support. Bihar based biodiversity conservation effort has created a new avenue for wildlife and bird conservation. A list of existing plants species around Nirbanpur Bihararea has been given.J. Biodivers. Conserv. Bioresour. Manag. 2018, 4(1): 27-34

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Effects of Wildfire and the Presence of the Invasive Paulownia tomentosa on the Regeneration of Native Tree Species in North-Central Appalachia

Fire ◽

10.3390/fire4030060 ◽

2021 ◽

Vol 4 (3) ◽

pp. 60

Author(s):

Roger Williams ◽

Haibin Wang

Keyword(s):

Tree Species ◽

Native Species ◽

Negative Impact ◽

Acer Rubrum ◽

Red Oak ◽

Red Maple ◽

White Oak ◽

Yellow Poplar ◽

Paulownia Tomentosa ◽

Burned Areas

A wildfire occurred in Shawnee State Forest located in southern Ohio that consumed 1215 hectares. Based on earlier forest inventories it was known that paulownia (Paulownia tomentosa), a non-native invasive tree species, occurred in the forest. The objective of this study was to determine if paulownia heavily colonized areas two years after the fire where the burn occurred, and if its presence had a negative impact on the regeneration (<137 cm height) of native species—red and white oaks (Quercus sp.), red maple (Acer rubrum), and yellow-poplar (Liriodendron tulipifera). Two years after the fire, paulownia had invaded the burned areas but not at significantly higher densities than occurred in the unburned areas. Fire significantly reduced the number of regenerating stems of white oak and red maple two years after the fire, whereas the number of regenerating stems of red oak increased slightly and that of yellow-poplar increased significantly. In areas where paulownia occurred that experienced wildfire, all species studied displayed a reduction in the number of regenerating stems compared to paulownia’s absence in the burn areas. Where paulownia occurred in areas not affected by the wildfire, all the native species studied displayed a reduction in the number of regenerating stems. The average heights of red oak, white oak, and red maple were significantly taller when growing in areas affected by the wildfire due to a more open canopy. However, there was no significant change in the average heights of yellow-poplar. The presence of paulownia in both the burned and unburned areas reduced the number of regenerating stems of the native species studied.

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Effects of tree species on soil enzyme activities in natural mixed forest and monoculture plantations in Ethiopia

10.5194/egusphere-egu2020-21746 ◽

2020 ◽

Author(s):

Iftekhar Uddin Ahmed ◽

Hodaddis K Mengistie ◽

Hans Sandén ◽

Douglas Godbold

Keyword(s):

Microbial Biomass ◽

Tree Species ◽

Enzyme Activities ◽

Eucalyptus Globulus ◽

Soil Enzyme ◽

Northern Ethiopia ◽

Indigenous Species ◽

Soil Enzyme Activities ◽

Indigenous Tree Species ◽

Indigenous Trees

Soil extracellular enzymes are crucial for belowground functioning and are sensitive to anthropogenic land use change. The potential effects of tree species on soil microbial and biochemical properties provide crucial feedbacks on mineralization, a key ecosystem function beneath the tree canopy. In the highlands of northern Ethiopia, remnants of the original Afromontane forests are largely restricted to church forests with indigenous tree species. However the impacts on potential soil enzymatic activity by conversion of those forests to monocultures for wood production is largely unknown. We investigated potential soil enzyme activities under four indigenous tree species and adjacent Eucalyptus globulus and Cupressus lusitanica plantations in Gelawdios, Amhara Regional State, Ethiopia. The potential activities of six enzymes associated with soil C, N and P cycling were measured following the fluorometrically labelled substrates techniques. All enzymes exhibited significantly higher activities in soils under the indigenous trees than the plantation species except, N-acetylglucosaminidase, that was the highest in Eucalyptus globulus soil due to the ectomycorrhizae, associated with the Eucalyptus root systems. Among the four indigenous species Apodytes dimidiata showed the lowest activitie for most of the enzymes. A stronger positive correlation was observed between enzyme activity and total N than with total C in the soil. Acid phosphatase had the highest activity followed by &#160;&#946;-Glucosidase (482 and 167 nmol mg-1 microbial biomass respectively). The activities of leucine aminopeptidase, &#946;-xylosidase, N-Acetylglucosaminidase and cellobiohydrolase in soils under indigenous trees ranged between 63-23 nmol mg-1 microbial biomass. The species specific effects of trees on soil enzyme activities indicate strong influence of tree traits on mineralization processes. &#160; &#160;&#160;

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Monitoring natural stand change in the forest reserve of Liedekerke, Flanders (Belgium)

Silva Gandavensis ◽

10.21825/sg.v64i0.824 ◽

1999 ◽

Vol 64 ◽

Cited By ~ 1

Author(s):

D. Van den Meersschaut ◽

B. De Cuyper ◽

K. Vandekerkhove ◽

N. Lust

Keyword(s):

Species Composition ◽

Castanea Sativa ◽

Basal Area ◽

Alnus Glutinosa ◽

Indigenous Species ◽

Stem Number ◽

Mature Trees ◽

Forest Reserve ◽

Natural Stand ◽

Sweet Chestnut

Natural stand changes in the forest reserve of Liedekerke were analysed during the period 1986-1996, using a permanent grid of circular plots. The monitoring concentrated on natural changes in species composition, using stem number and basal area as indicators, and changes in spatial distribution and colonization capacities of trees and shrubs, with special interest in the competition between exotic and indigenous species. After only a decade of monitoring important natural changes in the woody layer were detected. The pioneer forest is gradually maturing through self-thinning processes and shifts in species composition. The overall stem number decreased with 33.6%, while the basal area increased with 20.9%. Birch (Betula pendula/ pubescens) and indigenous oak (Quercus robur/petraea) remained dominant. More tolerant exotic species, like red oak (Quercus rubra) and sweet chestnut (Castanea sativa), are slowly increasing their share in the species composition and expanding their range. Pioneer species on the other hand, like aspen (Populus tremula), willow (Salix capreaicinerealaurita), alder buckthorn (Frangula alnus) and common (Alnus glutinosa) and grey alder (A. incana), strongly declined. Black cherry (Prunus serotina) seems to be slowly invading the forest due to its massive natural regeneration. Strong competition may be expected especially from rowan ash (Sorbus aucuparia), which showed similar regeneration and colonization capacities. Elder (Sambucus nigra) dramatically extented its range, though its share remains marginal. Beech remained absent most probably due to the lack of mature trees in the vacinity of the forest. Finally this change detection allowed that general predictions could be made on the future natural development and composition of this forest reserve, which could serve forest management decisions.

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Wood-inhabiting fungal responses to forest naturalness vary among morpho-groups

Scientific Reports ◽

10.1038/s41598-021-93900-7 ◽

2021 ◽

Vol 11 (1) ◽

Author(s):

Purhonen Jenna ◽

Abrego Nerea ◽

Komonen Atte ◽

Huhtinen Seppo ◽

Kotiranta Heikki ◽

...

Keyword(s):

Tree Species ◽

Boreal Forests ◽

Negative Impact ◽

Important Variable ◽

Host Tree ◽

Conservation Areas ◽

Fungal Community Composition ◽

Forest Sites ◽

Protected Forests ◽

Host Tree Species

AbstractThe general negative impact of forestry on wood-inhabiting fungal diversity is well recognized, yet the effect of forest naturalness is poorly disentangled among different fungal groups inhabiting dead wood of different tree species. We studied the relationship between forest naturalness, log characteristics and diversity of different fungal morpho-groups inhabiting large decaying logs of similar quality in spruce dominated boreal forests. We sampled all non-lichenized fruitbodies from birch, spruce, pine and aspen in 12 semi-natural forest sites of varying level of naturalness. The overall fungal community composition was mostly determined by host tree species. However, when assessing the relevance of the environmental variables separately for each tree species, the most important variable varied, naturalness being the most important explanatory variable for fungi inhabiting pine and aspen. More strikingly, the overall species richness increased as the forest naturalness increased, both at the site and log levels. At the site scale, the pattern was mostly driven by the discoid and pyrenoid morpho-groups inhabiting pine, whereas at the log scale, it was driven by pileate and resupinate morpho-groups inhabiting spruce. Although our study demonstrates that formerly managed protected forests serve as effective conservation areas for most wood-inhabiting fungal groups, it also shows that conservation planning and management should account for group- or host tree -specific responses.

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