Buffering of native forest edge microclimate by adjoining tree plantations

2006 ◽  
Vol 31 (4) ◽  
pp. 478-489 ◽  
Author(s):  
K. DENYER ◽  
B. BURNS ◽  
J. OGDEN
Keyword(s):  
Forest Edge ◽  
Tree Plantations ◽  
Native Forest

scholarly journals Diversity of Diurnal Raptors in a Suburban Area of a City in Southern Chile

2021 ◽  
Author(s):  
Andrés Muñoz-Pedreros ◽  
Varia Dellacasa
Keyword(s):  
Spatial Location ◽  
Suburban Area ◽  
Tree Plantations ◽  
Native Forest ◽  
Southern Chile ◽  
Territorial Planning ◽  
Exotic Tree ◽  
Acoustic Surveys ◽  
Raptor Conservation ◽  
The Relationship

Abstract Raptor conservation programs should be based on knowledge of the birds’ ecology in both natural and urban habitats, justifying the inclusion of ecological studies in suburban zones into regional planning initiatives. The objectives of this study were (a) to determine the use by diurnal raptors of the habitat in a suburban area of a city in southern Chile, and (b) to characterize the different zones into five types of environment, and assess their raptor diversity for consideration in territorial planning. Acoustic surveys were conducted in auditory stations in addition to observations from fixed transects and trails. From a total of 161.39 hours of census, we obtained 664 sightings corresponding to ten species of diurnal raptors. The richest environment was dense forest (eight species), followed by grassland (six species), native forest regeneration (five species), shrubs (four species) and exotic tree plantations (three species). We discuss the relationship between the richness of diurnal raptors, the types of environment in the study area, and the spatial location of the sites, as well as the implications for territorial planning to support the conservation of birds of prey in the suburban zone studied.

scholarly journals Twin plots – appropriate method to assess the impact of alien tree on understory?

Hacquetia ◽  
2018 ◽  
Vol 17 (2) ◽  
pp. 163-169 ◽  
Author(s):  
Denisa Bazalová ◽  
Katarína Botková ◽  
Katarína Hegedüšová ◽  
Jana Májeková ◽  
Jana Medvecká ◽  
...  
Keyword(s):  
Species Composition ◽  
Black Locust ◽  
Robinia Pseudoacacia ◽  
Alluvial Plain ◽  
Understory Vegetation ◽  
Floodplain Forest ◽  
Tree Plantations ◽  
Native Forest ◽  
Native Forests ◽  
The Impact

Abstract Replacing native forests by alien tree plantations can lead to changes in the species composition of the understory. However, differences in the understory species spectrum can also be a part of the natural variability of forest stands. We have tested the suitability of the twin plots method for an evaluation of the impact of alien trees on the species composition of the understory. This research was conducted on an alluvial plain (SW Slovakia) that was originally covered by a hardwood floodplain forest. The study was based on 7 twin plots of black locust (Robinia pseudoacacia) and native forest plots, with a maximum distance of 100 meters between the members of the twins. The dissimilarity of the plots within the black locust forest was significantly lower than the dissimilarity between the twin plots. In addition, the dissimilarity of the plots within the hardwood floodplain forest was also significantly lower than the dissimilarity between the twin plots. Under the same environmental conditions, the higher dissimilarity of the twin plots was caused by major edificators and their impact on the understory vegetation. The twin plots method proved to be a suitable tool for analyses of the impact of alien trees on understory vegetation.

scholarly journals Structure of bird communities in eucalyptus plantations: nestedness as a pattern of species distribution

2016 ◽  
Vol 76 (3) ◽  
pp. 583-591 ◽  
Author(s):  
L. I. Jacoboski ◽  
A. de Mendonça-Lima ◽  
S. M. Hartz
Keyword(s):  
Bird Species ◽  
Bird Communities ◽  
Tree Plantations ◽  
Native Forest ◽  
Structural Components ◽  
Generalist Species ◽  
Point Counts ◽  
Eucalyptus Plantations ◽  
Different Ages ◽  
Species Richness And Abundance

Abstract Replacement of native habitats by tree plantations has increased dramatically in Brazil, resulting in loss of structural components for birds, such as appropriate substrates for foraging and nesting. Tree plantations can also reduce faunal richness and change the composition of bird species. This study evaluated the structure of avian communities in eucalyptus plantations of different ages and in a native forest. We classified species as habitat specialists or generalists, and assessed if the species found in eucalyptus plantations are a subset of the species that occur in the native forest. Forty-one sampling sites were evaluated, with three point counts each, in a native forest and in eucalyptus plantations of four different ages. A total of 71 bird species were identified. Species richness and abundance were higher in the native forest, reflecting the greater heterogeneity of the habitat. The composition of bird species also differed between the native forest and plantations. The species recorded in the plantations represented a subset of the species of the native forest, with a predominance of generalist species. These species are more tolerant of habitat changes and are able to use the plantations. The commercial plantations studied here can serve as a main or occasional habitat for these generalists, especially for those that are semi-dependent on edge and forest. The bird species most affected by silviculture are those that are typical of open grasslands, and those that are highly dependent on well-preserved forests.

scholarly journals Uso de herramientas de teledetección para el análisis de la severidad y estimación de gases de efecto invernadero (GEI) en incendios forestales de gran magnitud. Estudio de caso incendio La Rufina, VI Región del L. G. B. O’Higgins, Chile

2017 ◽  
pp. 59 ◽  
Author(s):  
P. Vidal ◽  
A. De Santis ◽  
W. Pérez ◽  
P. Honeyman
Keyword(s):  
Combustion Efficiency ◽  
Burn Severity ◽  
Tree Plantations ◽  
Native Forest ◽  
High Severity ◽  
Landsat 7 ◽  
Landsat 5 Tm ◽  
Normalized Burn Ratio ◽  
Different Levels ◽  
Over Time

<p>Wildfires destroy thousands of hectares of vegetation every year in Chile, a phenomenon that has steadily increased over time, both in terms of the number of fires and the area affected. Since 1985 until 2016 have occurred 1,476 wildfires severe in intensity (&gt; 200 ha), that burned a total of about 1,243,407 ha of vegetation, and an average of 40,000 ha affected per year. Depending on the type and intensity of the fire, there are different levels of severity with which the fire affects the vegetation, a variation that is crucial for the estimation GEI in the event. The purpose of this research was to analyze the burn severity of Rufina wildfires occurred in 1999, in the VI Region of L. G. B. O’Higgins in Chile, south of the capital Santiago, using Landsat 5 TM and Landsat 7 ETM+ imagery, including in the analysis the estimated greenhouse gases emitted in relation to with the vegetation and burn severity. Burn severity was estimated through the Normalized Burn Ratio (dNBR) and GEI with the equation proposed by IPCC in 2006, which was adjusted with the combustion efficiency coefficients proposed by De Santis et al. (2010). The results show that around 16,783 ha were affected by fires of different severity and the native forest and tree plantations were affected by high severity. The ton of GEI for each level of burn severity and type of vegetation was estimated, being carbon dioxide (CO<sub>2 </sub>) the main GEI emitted to the atmosphere in the fire. The highest emissions occurred in the areas of grasslands and scrublands, with high severity, with values ranging between 186 and 170 t/ha respectively</p>

scholarly journals Fine root biomass and seed bank in secondary and primary forests in Eastern Amazon

Interação ◽  
2020 ◽  
Vol 21 (1) ◽  
pp. 748-761
Author(s):  
Madson Alan Rocha de Sousa ◽  
Raul Negrão de Lima ◽  
Ana Clara Saraiva de Lima ◽  
Camila de Almeida Milhomem ◽  
Luiz Fernandes Silva Dionisio
Keyword(s):  
Seed Bank ◽  
Fine Root ◽  
Plant Root ◽  
Forest Edge ◽  
Fine Root Biomass ◽  
Primary Forest ◽  
Native Forest ◽  
Root Mass ◽  
Plant Root System ◽  
Important Structure

Amazon is made up of a mosaic of ecosystems that have important structure, flora, and ecological functions for Brazil and the world. Knowing aspects of this biome related to the production and biomass of fine roots is of major importance given the role that the plant root system plays in nutrient cycling and carbon storage. Therefore, this study aimed to quantify the fine root mass in two regeneration areas and in primary forest, with a forest edge, in order to verify whether in different environments there are significant differences in root mass, as well as to compare the seed bank of the three areas to try to identify similarities among banks. The native forest presented a higher root mass, which differs from the two regeneration areas. The seed bank of succession forests is more similar to each other. The native forest has a greater number of seeds per volume of soil and litter collected. Concerning morphospecies, a higher number was observed in succession forests. The three areas differ in terms of fine root mass; however, regarding the seed banks, a possible edge effect may be affecting the native forest.

Can exotic tree plantations preserve the bird community of an endangered native forest in the Argentine Pampas?

2021 ◽  
Author(s):  
Mariela Veronica Lacoretz ◽  
Daniela María Depalma ◽  
Sebastián A Torrella ◽  
Cecilia Zilli ◽  
Valentina Ferretti ◽  
...  
Keyword(s):  
Vegetation Structure ◽  
Bird Community ◽  
Tree Plantations ◽  
Bird Diversity ◽  
Suitable Habitat ◽  
Native Forest ◽  
Native Forests ◽  
Bird Richness ◽  
Exotic Tree ◽  
Argentine Pampas

Worldwide, the areas covered by native forests are declining while those of tree plantations are increasing. This has raised the question of whether tree plantations are able to preserve native forest species. In Argentina, the main native forests of the Pampas region, called talares, are endangered and their disappearance is imminent. Although exotic tree plantations are increasing in this region, their role in maintaining native bird diversity has not been studied in Argentine Pampas. We compared the bird community attributes and vegetation structure of talares native forest with those of tree plantations. Plantations exhibited markedly lower bird richness than talares, up to 80% lower, and all forest-dependent bird species were absent in plantations. Talares and plantations differed also in some aspects of vegetation structure, which usually are key determinants of bird abundance. Given the extreme importance of talares for forest birds, this bird community will be deeply affected if it continues to decline, as nearby plantations do not offer suitable habitat. In order to maintain the bird diversity of talares, and probably the diversity of other unstudied taxa related to them, we recommend management actions that should be applied urgently in these endangered forests of the Argentine Pampas.

Seed movement between the native forest and monoculture tree plantations in the southern Atlantic forest: A functional approach

2018 ◽  
Vol 430 ◽  
pp. 126-133 ◽  
Author(s):  
Natalia I. Vespa ◽  
Gustavo A. Zurita ◽  
M. Genoveva Gatti ◽  
M. Isabel Bellocq
Keyword(s):  
Atlantic Forest ◽  
Functional Approach ◽  
Tree Plantations ◽  
Native Forest

Moving away from the native forest edge: Changes in ecosystem processes towards the interior of Pinus taeda plantations

2019 ◽  
Vol 432 ◽  
pp. 967-975 ◽  
Author(s):  
M. Genoveva Gatti ◽  
Silvia C. Zaninovich ◽  
Natalia I. Vespa ◽  
Gustavo A. Zurita
Keyword(s):  
Pinus Taeda ◽  
Ecosystem Processes ◽  
Forest Edge ◽  
Native Forest

Habitat selection by a generalist mesopredator near its historical range boundary

2014 ◽  
Vol 92 (1) ◽  
pp. 41-48 ◽  
Author(s):  
William S. Beatty ◽  
James C. Beasley ◽  
Olin E. Rhodes
Keyword(s):  
Habitat Selection ◽  
Spatial Scales ◽  
Forest Edge ◽  
Didelphis Virginiana ◽  
Edge Density ◽  
Native Forest ◽  
Very High Frequency ◽  
Third Order ◽  
Essential Components ◽  
Anthropogenic Resources

The Virginia opossum (Didelphis virginiana Kerr, 1792) has expanded its geographic range northward since European settlement, which has been attributed to its ability to exploit anthropogenic resources. To examine the utility of anthropogenic resources to this species, we monitored 61 opossums from 2009 to 2010 with very high frequency (VHF) telemetry in a fragmented agricultural ecosystem in northern Indiana, USA, at the periphery of the opossum’s historical distribution. We examined the influence of anthropogenic (agricultural areas, developed land, roads), disturbed (corridor, forest edge, grassland, water), and native (forest, shrub land) habitats on habitat selection at the second- and third-order scales across three seasons. At the second-order scale, areas proximate to agricultural fields and developed land were selected in the breeding and postbreeding seasons, respectively. Areas proximate to roads were selected at both spatial scales during all seasons except winter at the third-order scale. Areas near forest with high forest-edge density were selected throughout the year at both spatial scales, but confidence intervals for forest during the postbreeding season marginally overlapped zero (third-order scale). Although anthropogenic habitats provide novel resources for opossums, forest and forest edge remain essential components to populations near their historical distributional limit in agricultural ecosystems.

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