scholarly journals Diversity and conservation of saproxylic beetles in 42 European tree species: an experimental approach using early successional stages of branches

2020 ◽  
Author(s):  
Sebastian Vogel ◽  
Heinz Bussler ◽  
Sven Finnberg ◽  
Jörg Müller ◽  
Elisa Stengel ◽  
...  
Keyword(s):  
Tree Species ◽  
Experimental Approach ◽  
Saproxylic Beetles ◽  
Successional Stages

scholarly journals Effects of Environmental Traits and Landscape Management on the Biodiversity of Saproxylic Beetles in Mediterranean Oak Forests

Diversity ◽  
2020 ◽  
Vol 12 (12) ◽  
pp. 451
Author(s):  
Ana M. Cárdenas ◽  
Patricia Gallardo ◽  
Ángela Salido ◽  
José Márquez
Keyword(s):  
Tree Species ◽  
Dead Wood ◽  
Landscape Management ◽  
Thermal Conditions ◽  
Saproxylic Beetles ◽  
Red Lists ◽  
Significant Relationships ◽  
Old Trees ◽  
Negative Relationships ◽  
Macroinvertebrate Fauna

This study assesses the effects of environmental traits and landscape management on the biodiversity of saproxylic beetles from “dehesas” located in Sierra Morena Mountains (Córdoba, Southern Iberian Peninsula). The dehesa is an open savanna-like landscape with mature/old trees scattered on a pasture cover where both living and dead wood are of great importance for the maintenance of macroinvertebrate fauna. The study was carried out in five plots, with different environmental features and management. A total of 137 branches belonging to the four main tree species present in the area were collected, classified, and kept under four different thermal conditions. From January to June 2019, the adult emergences were followed. A total of 466 saproxylic specimens of 31 species were obtained, 5 of them included in red lists of protected fauna. Two Bostrichidae species (Lichenophanes numida Lesne and Scobicia pustulata Fab.) and two Cerambycidae (Chlorophorus ruficornis Oliv. and Trichoferus fasciculatus Faldermann) are included in the “European Red List of Saproxylic Beetles”; and the Clerid Tillus ibericus Bahillo de la Puebla, López–Colón and García–Paris, is included in the “Red Book of Invertebrate of Andalucía”. Differences were observed regarding the diversity and abundance among the plots and among the tree species from which the beetles emerged. Simple regression analyses revealed negative relationships between tree density/Buprestidae, livestock/Bostrichidae, and land use/Cerambycidae. Multivariant logistic regression analysis did not find significant relationships among environmental traits and saproxylic diversity. Results confirmed that dry wood was a main resource for the maintenance dehesas’ biodiversity because it constitutes an ecological niche exploited by a significant set of saproxylic beetles belonging to the Bostrichidae, Buprestidae, and Cerambycidae families, in addition to other guilds of species, mainly Carabidae and Cleridae, which feed on the above-mentioned groups. Our results also support that increasing environmental temperature accelerates the development of Buprestidae, but this effect was not evident for the Bostrichidae species.

The effect of forest successional stage on seed removal of tropical rain forest tree species

2002 ◽  
Vol 18 (2) ◽  
pp. 261-274 ◽  
Author(s):  
Marielos Peña-Claros ◽  
Henneleen De Boo
Keyword(s):  
Tree Species ◽  
Removal Rate ◽  
Forest Tree ◽  
Primary Forest ◽  
Secondary Forests ◽  
Seed Removal ◽  
Successional Stage ◽  
Successional Stages ◽  
Agricultural Areas ◽  
Number Of Seeds

Seed removal was evaluated at the macro- and micro-habitat level in areas differing in successional stage in the Bolivian Amazon. The successional stages consisted of secondary forests of 2, 10 and 20 years old and primary forest. Seeds of nine tree species were artificially dispersed and the number of seeds removed was evaluated over 7 weeks. Several stand characteristics were measured at the sites where seeds were dispersed. Seed removal at the end of the experiment varied from 50 to 100% depending on the species, and from 74 to 90% depending on successional stage. In general, the removal rate decreased with an increase in age of successional stage. The seed removal rate was related to liana density and not to litter thickness. Different microhabitat characteristics explained the seed removal rate of four species but microhabitat characteristics did not explain the decrease in seed removal rate with an increase in forest age. The results support the idea that post-dispersal seed removal reduces the number of seeds available for germination, consequently playing an important role in the regeneration of abandoned agricultural areas.

Comparative hydraulic architecture of tropical tree species representing a range of successional stages and wood density

Oecologia ◽  
2011 ◽  
Vol 167 (1) ◽  
pp. 27-37 ◽  
Author(s):  
Katherine A. McCulloh ◽  
Frederick C. Meinzer ◽  
John S. Sperry ◽  
Barbara Lachenbruch ◽  
Steven L. Voelker ◽  
...  
Keyword(s):  
Wood Density ◽  
Tree Species ◽  
Tropical Tree ◽  
Hydraulic Architecture ◽  
Tropical Tree Species ◽  
Successional Stages

scholarly journals Evaluation of Hyperspectral Multitemporal Information to Improve Tree Species Identification in the Highly Diverse Atlantic Forest

2020 ◽  
Vol 12 (2) ◽  
pp. 244 ◽  
Author(s):  
Gabriela Takahashi Miyoshi ◽  
Nilton Nobuhiro Imai ◽  
Antonio Maria Garcia Tommaselli ◽  
Marcus Vinícius Antunes de Moraes ◽  
Eija Honkavaara
Keyword(s):  
Species Identification ◽  
Atlantic Forest ◽  
Tree Species ◽  
Brazilian Atlantic Forest ◽  
Random Forest Classification ◽  
Promising Tool ◽  
Forest Classification ◽  
Successional Stages ◽  
Multitemporal Remote Sensing ◽  
Leave One Out

The monitoring of forest resources is crucial for their sustainable management, and tree species identification is one of the fundamental tasks in this process. Unmanned aerial vehicles (UAVs) and miniaturized lightweight sensors can rapidly provide accurate monitoring information. The objective of this study was to investigate the use of multitemporal, UAV-based hyperspectral imagery for tree species identification in the highly diverse Brazilian Atlantic forest. Datasets were captured over three years to identify eight different tree species. The study area comprised initial to medium successional stages of the Brazilian Atlantic forest. Images were acquired with a spatial resolution of 10 cm, and radiometric adjustment processing was performed to reduce the variations caused by different factors, such as the geometry of acquisition. The random forest classification method was applied in a region-based classification approach with leave-one-out cross-validation, followed by computing the area under the receiver operating characteristic (AUCROC) curve. When using each dataset alone, the influence of different weather behaviors on tree species identification was evident. When combining all datasets and minimizing illumination differences over each tree crown, the identification of three tree species was improved. These results show that UAV-based, hyperspectral, multitemporal remote sensing imagery is a promising tool for tree species identification in tropical forests.

scholarly journals Herbivory and leaf traits of two tree species from different successional stages in a tropical dry forest

2021 ◽  
Vol 7 (1) ◽  
pp. 266-275
Author(s):  
Fernando Henrique de Sena ◽  
Bruno Melo Lustosa ◽  
Silvia Roberta Santos Silva ◽  
Hiram Marinho Falcão ◽  
Jarcilene Silva de Almeida
Keyword(s):  
Tree Species ◽  
Tropical Dry Forest ◽  
Leaf Traits ◽  
Dry Forest ◽  
Successional Stages
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