scholarly journals Can forest plantations harbour biodiversity similar to natural forest ecosystems over time?

2016 ◽  
Vol 12 (1-2) ◽  
pp. 108-115 ◽  
Author(s):  
Jonathan C. Onyekwelu ◽  
Adeola A. Olabiwonnu
Keyword(s):  
Forest Ecosystems ◽  
Natural Forest ◽  
Forest Plantations ◽  
Over Time

scholarly journals Population survey of Milicia excelsa, Pouteria adolfi-fridercii, Antiaris toxicaria and Prunus africana in south and south-western Ethiopia: implications for domesticating and establishing Seed Production Areas

2020 ◽  
Vol 5 (4) ◽  
pp. 153-162
Author(s):  
Mohammed Adefa Seid ◽  
Yigardu Mulatu ◽  
Agena Anjulo ◽  
Semaigzer Ayalew ◽  
Hailu Belay ◽  
...  
Keyword(s):  
Seed Production ◽  
Forest Ecosystems ◽  
Natural Forest ◽  
Target Species ◽  
Stem Height ◽  
Prunus Africana ◽  
Milicia Excelsa ◽  
Western Ethiopia ◽  
Tree Stem

The population dynamics and genetic qualities of stem height and dbh of the populations of Milicia excelsa, Pouteria adolfi-fridercii, Antiaris toxicaria and Prunus africana were assessed and studied in 14 forest ecosystems in south and south-western Ethiopia. A systematic random quadrat sampling technique was employed to identify potential habitat area for selected timber species in south and south-western Ethiopia. So, a total of 10 parallel transect lines were set out across each forest habitat. Milicia excelsa was assessed in four forest ecosystems; Bebeka -Duduka natural forest (45 tree stem ha-1) and Yayu coffee mixed forest (40 tree stem ha-1) appeared to have relatively denser population of M. excelsa compared to the other pilot forests. Similarly, statistically larger stem height (m) is observed in Bebeka-Duduka natural forest (x̅=29.5, SD=4.2) and larger dbh size (cm) in Bebeka 1 coffee mixed forest (x̅=48.5, SD=25.2) at p<0.05. Hence, Bebeka-Duduka natural forest and Bebeka 1 coffee mixed forests are identified for in-situ SPA establishment project of the target species. Pouteria adolfi-fridercii was assessed in eight forest ecosystems; Masha-Gora shewi forest appeared to have dense population of P. adolfi-fridercii (150 tree stem ha-1) followed by Bebeka-Kebereta (80 tree stem ha-1) as compared to the remaining pilot forests. However, statistically larger stem height (m) is scored in Bebeka 2 natural forest (x̅=30.6, SD=2.98) and Bebeka-kebereta forest (x̅=30.0, SD=4.4) and larger dbh size (cm) in Bebeka 2 natural forest (x̅=96.5, SD=19.9) at p<0.05. So, Bebeka 2 natural forest and Bebeka-kebereta forest are identified for SPA establishment project of the target species. Antiaris toxicaria was assessed in two forest ecosystems where both forest habitats appeared to have the same density of Antiaris toxicaria in hectare. Moreover, analyses of mean stem height (cm) of Bebeka 1 forest (x̅=21.4, SD=5.2) and Bebeka-kebereta forest (x̅=22.4, SD=2.7), and mean dbh size (cm) of Bebeka 1 forest (x̅=48, SD=16.4) and Bebeka-kebereta forest (x̅=48, SD=8.2) appeared to have not significantly different at p<0.05. Prunus africana was assessed in five forest ecosystems; Masha-Gora shewi forest appeared to have dense population of Prunus africana (150 tree stem ha-1) followed by Kaho-shemeta forest (130 tree stem ha-1) as compared to the remaining pilot forests. However, statistically larger stem height (m) is scored in Kaho-shemeta natural forest (x̅=31, SD=7.6) and larger dbh (cm) in Masha-Gora shewi forest (x̅=64.7, SD=28.2) at p<0.05. As the result, Kaho-shemeta natural forest and Bonga-Teja-adela forest are identified for establishment of seed production area of the target species in-situ. Hence, while implementing the project of domestication and seed production area establishment in south and south-western Ethiopia, in-situ and ex-situ areas must be selected and delineated in accordance with this preliminary information of the population dynamics and genetic qualities of stem height and diameter at breast height. The survey data generated in this study would bridge the research gap in relation to the population status of the target tree species in the designated area.

scholarly journals Coleopterans prospection associated to forest ecosystems of Swietenia macrophylla (King), Eastern Amazonia

2019 ◽  
Vol 40 (5) ◽  
pp. 1775
Author(s):  
Ruy Guilherme Correia ◽  
Francisco de Assis Oliveira ◽  
Leandro Silva de Souza ◽  
Raphael Lobato Prado Neves ◽  
Jéssy Anni Vilhena Senado ◽  
...  
Keyword(s):  
Functional Groups ◽  
Rainy Season ◽  
Forest Ecosystems ◽  
Dry Season ◽  
Forest Plantations ◽  
Pitfall Traps ◽  
Swietenia Macrophylla ◽  
The Difference

Few research on the entomofauna associated to forest plantations with Swietenia macrophylla (King) in Brazil has been reported. The aim of this study was to analyze the Coleoptera communities in forest ecosystems with S. macrophylla, Brazilian mahogany, with emphasis on the diversity of families and the main functional groups. The insects were collected through pitfall traps in three forest ecosystems: monoculture, consortium and forest enriched with Brazilian mahogany, during dry and rainy periods in two consecutive years. The identification of the captured insects occurred in the entomology laboratory of the Federal Rural University of Amazonia. The analysis was performed through Past Paleontological Statistic 3.14 and ANAFAU, where the difference was considered significant only when p ? 0.05. 11,358 specimens from 21 families were captured, of which 8,058 were sampled in the rainy season and 3,299 in the dry season. There was influence of seasonality and types of forest ecosystems during collection. The families Nitidulidae, Staphylinidae, Carabidae and Meloidae presented greater abundance and richness in the complex ecosystems. Anobiidae, Cerambycidae, Bostrichidae, Brentidae, Buprestidae, Curculionidae, Elateridae, Chrysomelidae and Lagriidae were considered to be pests and common to all studied ecosystems; however, the families Nitidulidae, Scarabaeidae, Tenebrionidae and Passalidae had the function of decomposers; Carabidae, Coccinellidae, Histeridae, Meloidae, Staphylinidae, Cantharidae and Hydrophilidae were the predators.

scholarly journals Landscope: Fire The Force Of Life

2000 ◽  
Vol 6 (3) ◽  
pp. 275
Author(s):  
Kelli O'Neill
Keyword(s):  
Western Australia ◽  
Precautionary Principle ◽  
General Public ◽  
Forest Ecosystems ◽  
Prescribed Burning ◽  
Environmental Movement ◽  
The Precautionary Principle ◽  
Australian Flora ◽  
Final Group ◽  
Over Time

The use of fire in Western Australia to manage forest ecosystems is contentious. There is huge disagreement between scientists, the environmental movement and members of the general public over the effects of prescribed burning. Some believe that the Australian flora and fauna has adapted to fire over time and needs it for their continued survival. Others perceive prescribed burning as damaging to biota. A final group of people thinks we should be applying the precautionary principle to prescribed burning. This disagreement is present due to the slim knowledge we have on fire and its management. No one really knows, how, when or if we should use prescribed burning.

The ecology of predispersal insect herbivory on tree reproductive structures in natural forest ecosystems

2017 ◽  
Vol 26 (2) ◽  
pp. 182-198 ◽  
Author(s):  
Thomas Boivin ◽  
Violette Doublet ◽  
Jean‐Noël Candau
Keyword(s):  
Forest Ecosystems ◽  
Insect Herbivory ◽  
Natural Forest ◽  
Reproductive Structures

scholarly journals The bioindication importance of the Carabidae communities of Veporské vrchy and Juhoslovanská kotlina

2016 ◽  
Vol 35 (2) ◽  
pp. 126-135
Author(s):  
Vladimír Langraf ◽  
Kornélia Petrovičová ◽  
Stanislav David ◽  
Janka Schlarmannová
Keyword(s):  
Forest Ecosystems ◽  
Arable Land ◽  
Natural Forest ◽  
Pitfall Traps ◽  
Important Indicator ◽  
Environmental Burden ◽  
Number Of Species ◽  
Anchomenus Dorsalis

AbstractThe Carabidae family (Coleoptera) is used frequently for its bioindication potential to detect the environmental burden. In 2013 and 2014, we studied the correlation of Carabidae on the biotopes of six areas in the Veporské vrchy Mts and the Juhoslovenská kotlina basin by using pitfall traps, Möricke plates and Bambara beetle traps. Out of 432 recorded specimens of beetles (53 species, 15 families), the Carabidae family were the highest number of species and specimens represented, with which we confirmed higher anthropogenic interference and disturbance of ecosystems in the Juhoslovenská kotlina basin. This statistic confirms the presence of the following species typically found on arable land: Anchomenus dorsalis, Calathus fuscipes fuscipes, Harpalus affinis and Pseudoophonus rufipes. The ecosystems in the Veporské vrchy Mts region show less disturbance, and the anthropological impact is smaller, indicated by the presence of the Carabus problematicus species, an important indicator of the conservation of natural forest ecosystems.

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