Early silvicultural performance of eucalypt species grown in environmental conditions of the tropical dry forest of Colombia

The establishment of new forest plantations requires making important decisions starting with the selection of the species to be planted, as well as the choice of an adequate planting spacing to guarantee the maximization of wood production. The aim of this study was to evaluate the performance of nine eucalypt species planted with three different spacings under the environmental conditions of the tropical dry forest of the inter-Andean valleys of Colombia. A split-plot arrangement with two replicates was used as the experimental design. The planting spacing factor (three planting spacings) was assigned to the main plots and the species factor (nine eucalypt species) was assigned to the subplots. Survival and growth were evaluated at twenty-four months of age. The study identified the Brazilian provenances of Eucalyptus camaldulensis Dehnh, Eucalyptus urophylla S.T. Blake, Eucalyptus grandis W. Hill, and Eucalyptus pellita F. Muell. and the Colombian provenance of Eucalyptus pellita F. Muell. as promising for commercial reforestation programs in areas with a water deficit in the tropical dry forest. Planting spacings of 3×2 m (1666 stems·ha-1) and 3×2.5 m (1333 stems·ha-1) maximized the production of basal area and the volume for the species evaluated. Finally, no interaction was detected between species and planting spacing factors, therefore, the species identified had a better performance regardless of the planting spacing used.

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Multiple Factors Influence Seasonal and Interannual Litterfall Production in a Tropical Dry Forest in Mexico

Forests ◽

10.3390/f11121241 ◽

2020 ◽

Vol 11 (12) ◽

pp. 1241

Author(s):

Hernán Morffi-Mestre ◽

Gregorio Ángeles-Pérez ◽

Jennifer S. Powers ◽

José Luis Andrade ◽

Astrid Helena Huechacona Ruiz ◽

...

Keyword(s):

Linear Models ◽

Tropical Dry Forest ◽

Basal Area ◽

Dry Forest ◽

Maximum Temperature ◽

Dry Forests ◽

Evergreen Species ◽

Flat Terrain ◽

Litterfall Production ◽

Successional Age

Litterfall production plays a fundamental role in the dynamics and function of tropical forest ecosystems, as it supplies 70–80% of nutrients entering the soil. This process varies annually and seasonally, depending on multiple environmental factors. However, few studies spanning several years have addressed the combined effect of climate variables, successional age, topography, and vegetation structure in tropical dry forests. In this study, we evaluated monthly, seasonal, and annual litterfall production over a five-year period in semideciduous dry forests of different successional ages growing on contrasting topographic conditions (sloping or flat terrain) in Yucatan, Mexico. Its relationship with climate and vegetation structural variables were also analyzed using multiple linear regression and generalized linear models. Litterfall was measured monthly in 12 litterfall traps of 0.5 m2 in three sampling clusters (sets of four 400 m2 sampling plots) established in forests of five successional age classes, 3–5, 10–17, 18–25, 60–79, and >80 years (in the latter two classes either on slopping or on flat terrain), for a total of 15 sampling clusters and 180 litterfall traps. Litterfall production varied between years (negatively correlated with precipitation), seasons (positively correlated with wind speed and maximum temperature), and months (negatively correlated with relative humidity) and was higher in flat than in sloping sites. Litterfall production also increased with successional age until 18–25 years after abandonment, when it attained values similar to those of mature forests. It was positively correlated with the aboveground biomass of deciduous species but negatively correlated with the basal area of evergreen species. Our results show a rapid recovery of litterfall production with successional age of these forests, which may increase with climate changes such as less precipitation, higher temperatures, and higher incidence of hurricanes.

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Going beyond the green: senesced vegetation material predicts basal area and biomass in remote sensing of tree cover conditions in an African tropical dry forest (miombo woodland) landscape

Environmental Research Letters ◽

10.1088/1748-9326/aa7242 ◽

2017 ◽

Vol 12 (8) ◽

pp. 085004 ◽

Cited By ~ 4

Author(s):

Marc Mayes ◽

John Mustard ◽

Jerry Melillo ◽

Christopher Neill ◽

Gerson Nyadzi

Keyword(s):

Remote Sensing ◽

Tropical Dry Forest ◽

Basal Area ◽

Dry Forest ◽

Tree Cover ◽

Miombo Woodland

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Identifying Variables to Discriminate between Conserved and Degraded Forest and to Quantify the Differences in Biomass

Forests ◽

10.3390/f11091020 ◽

2020 ◽

Vol 11 (9) ◽

pp. 1020

Author(s):

Yan Gao ◽

Margaret Skutsch ◽

Diana Laura Jiménez Rodríguez ◽

Jonathan V. Solórzano

Keyword(s):

Aboveground Biomass ◽

Tropical Dry Forest ◽

Canopy Cover ◽

Basal Area ◽

Tree Height ◽

Dry Forest ◽

Rank Test ◽

Degraded Forest ◽

Forest Survey ◽

Structural Variables

The purpose of this work was to determine which structural variables present statistically significant differences between degraded and conserved tropical dry forest through a statistical study of forest survey data. The forest survey was carried out in a tropical dry forest in the watershed of the River Ayuquila, Jalisco state, Mexico between May and June of 2019, when data were collected in 36 plots of 500 m2. The sample was designed to include tropical dry forests in two conditions: degraded and conserved. In each plot, data collected included diameter at breast height, tree height, number of trees, number of branches, canopy cover, basal area, and aboveground biomass. Using the Wilcoxon signed-rank test, we show that there are significant differences in canopy cover, tree height, basal area, and aboveground biomass between degraded and conserved tropical dry forest. Among these structural variables, canopy cover and mean height separate conserved and degraded forests with the highest accuracy (both at 80.7%). We also tested which variables best correlate with aboveground biomass, with a view to determining how carbon loss in degraded forest can be quantified at a larger scale using remote sensing. We found that canopy cover, tree height, and density of trees all show good correlation with biomass and these variables could be used to estimate changes in biomass stocks in degraded forests. The results of our analysis will help to increase the accuracy in estimating aboveground biomass, contribute to the ongoing work on REDD+, and help to reduce the great uncertainty in estimation of emissions from forest degradation.

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COMPOSICIÓN VEGETAL, PREFERENCIAS ALIMENTICIAS Y ABUNDANCIA DE BIBLIDINAE (LEPIDOPTERA: NYMPHALIDAE) EN UN FRAGMENTO DE BOSQUE SECO TROPICAL EN EL DEPARTAMENTO DEL ATLÁNTICO, COLOMBIA

Acta Biológica Colombiana ◽

10.15446/abc.v20n3.42545 ◽

2015 ◽

Vol 20 (3) ◽

pp. 79-92 ◽

Cited By ~ 3

Author(s):

María Angélica VARGAS- ZAPATA ◽

Carlos José BOOM- URUETA ◽

Leidys Isabel SEÑA-RAMOS ◽

Alba Lucia ECHEVERRY-IGLESIAS ◽

Neis José MARTÍNEZ HERNÁNDEZ

Keyword(s):

Woody Plants ◽

Tropical Dry Forest ◽

Basal Area ◽

Dry Forest ◽

Forest Fragment ◽

Plant Composition ◽

Components Analysis ◽

Spatio Temporal ◽

Determining Factor

Se analizó la variación espacio-temporal de la abundancia de las mariposas de la subfamilia Biblidinae (Lepidoptera: Nymphalidae) en un fragmento de Bs-T en la Reserva Campesina La Montaña (RCM), Atlántico, Colombia; desde enero hasta agosto de 2011. Se marcaron cuatro puntos dentro del área de estudio, donde se ubicaron trampas Van Someren–Rydon cebadas con calamar en descomposición, fruta fermentada y con una mezcla de los anteriores cebos. Adicionalmente, se realizó una caracterización de la vegetación por punto, para lo cual se tomaron datos de diámetro a la altura del pecho (DAP), altura y tamaño de la copa para todas aquellas plantas leñosas con DAP mayor o igual a 2,5 cm. Se capturaron 76 individuos agrupados en seis especies y cuatro géneros; destacándose Hamadryas februa (Hübner) como la más dominante con 32 individuos. El mes de marzo presentó la mayor riqueza y abundancia (6 especies y 25 individuos) durantes las primeras lluvias en la zona. El punto 3 presentó los valores más altos de diversidad y abundancia de Biblidinae (5 especies y 37 individuos) y la mayor densidad de árboles (D= 0,28 individuos/m2). Se demuestra que la estructura de este grupo de mariposas presenta un patrón temporal y espacial en esta reserva. El análisis de componentes principales demostró que el área basal total (ABT) y la Densidad (D) de plantas leñosas, pueden considerarse como un factor determinante en la distribución y abundancia de las especies de la subfamilia Biblidinae en la RCM.Plant Composition, Feeding Preferences and Abundance of Biblidinae (Lepidoptera: Nymphalidae) in a Tropical Dry Forest Fragment in the Department of Atlántico, ColombiaThe abundance and spatio-temporal variation of butterflies of the Biblidinae subfamily (Lepidoptera: Nymphalidae) in a fragment of Tropical dry forest at the Reserva Campesina La Montaña (RCM), Atlántico, Colombia; from January until August 2011, was analyzed. Within the study area four points were marked; Van Someren-Rydon traps were placed.in each point using rotten squid, fermented fruit and a mixture of both as bait. In addition, a characterization of the vegetation by point was performed, taking data of the diameter to the breast height (DBH), height and size of treetop of all woody plants with a DBH greater than or equal to 2.5 cm. In total 76 butterfly individuals grouped in six species and four genera were captured; being Hamadryas februa (Hübner) the most dominant with 32 individuals. The greatest richness and abundance was recorded in March (6 species and 25 individuals), during the first rains in the study area. The point 3 presented the highest values of diversity and abundance (five species and 37 individuals) of Biblidinae and the higher density of trees (D= 0,28 individuals/m2). The structure of this butterflies group presents a spatio-temporal pattern in this reserve. The principal components analysis showed that the total basal area (ABT) and the density (D) of woody plants, can be considered a determining factor in the distribution and abundance of species of the subfamily Biblidinae at the RCM.

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Vegetation patterns and species-filtering effects of soil in secondary succession in a tropical dry forest in central Myanmar

Journal of Tropical Ecology ◽

10.1017/s026646741600002x ◽

2016 ◽

Vol 32 (2) ◽

pp. 116-124 ◽

Cited By ~ 3

Author(s):

Bo Sann ◽

Mamoru Kanzaki ◽

Seiichi Ohta

Keyword(s):

Soil Properties ◽

Secondary Succession ◽

Tropical Dry Forest ◽

Basal Area ◽

Single Species ◽

Dry Forest ◽

Vegetation Patterns ◽

Total Density ◽

Soil Hardness ◽

Acacia Catechu

Abstract:We studied the vegetation and soil properties of a dry forest that had once been disturbed in central Myanmar using 30 quadrats (20 × 20 m) established in 2012. For 30 species, the overall density was 706 individuals ha−1, and the basal area was 2.92 m2ha−1. The forest was a mosaic of six community types, each of which was dominated by a single species. Dominant species that were capable of resprouting accounted for 47–78% of the total density and 56–83% of the basal area of the communities. We related seven soil properties to the vegetation patterns using canonical correspondence analysis (CCA). The CCA results highlighted remarkable associations of species such asAcacia catechu, Dalbergia paniculata, Terminalia oliveriandMillettia multiflorawith soil texture.Acacia inopinatawas associated with a high soil pH (i.e. 9–10), andTerminalia tomentosawas associated with soil hardness. Our results indicate that secondary succession of a dry forest is not initially led by pioneer species, but instead, by superior competitors capable of resprouting, and that species distributions are primarily determined by the filtering effects of edaphic conditions. We believe that the dry-forest species retain their soil–species relationships despite heavy disturbances.

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Secondary forest succession in a tropical dry forest: patterns of development across a 50-year chronosequence in lowland Bolivia

Journal of Tropical Ecology ◽

10.1017/s0266467402002031 ◽

2002 ◽

Vol 18 (1) ◽

pp. 53-66 ◽

Cited By ~ 133

Author(s):

DEBORAH K. KENNARD

Keyword(s):

Species Richness ◽

Tree Species ◽

Stand Structure ◽

Secondary Forest ◽

Tropical Dry Forest ◽

Basal Area ◽

Forest Stand ◽

Dry Forest ◽

Stem Density ◽

Mature Forest

Stand structure, species richness and population structures of tree species were characterized in 12 stands representing 50 y of succession following slash-and-burn agriculture in a tropical dry forest in lowland Bolivia. Estimates of tree species richness, canopy cover and basal area reached or surpassed 75% of mature forest levels in the 5-, 8-, and 23-y-old stands respectively. Total stem density of the 50-y-old stand was almost twice that of the mature forest stand. This rapid recovery may be due to a high percentage of sprouting tree species, potentially high seed fall into abandoned fields, or the disturbance history of the mature stand. The even-aged size-class structures, dominance of long-lived pioneers, and presence of charcoal and pottery shards in soils of the mature forest stand suggest it formed after a severe disturbance, possibly fire of anthropogenic origin.

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Produção de biomassa e remoção de nutrientes em povoamentos de Eucalyptus camaldulensis Dehnh, Eucalyptus grandis hill ex Maiden e Eucalyptus torelliana F. Muell, plantados em Anhembí, SP.

Ciência Florestal ◽

10.5902/19805098283 ◽

1999 ◽

Vol 3 (1) ◽

pp. 21 ◽

Cited By ~ 6

Author(s):

Mauro Valdir Schumacher ◽

Fabio Poggiani

Keyword(s):

Eucalyptus Grandis ◽

Eucalyptus Camaldulensis ◽

Eucalyptus Camaldulensis Dehnh

Neste trabalho estudou-se a distribuição de biomassa e a quantidade de nutrientes estocados nos diferentes compartimentos (folhas, ramos, casca e lenho) das árvores de Eucalyptus camaldulensis Dehnh, Eucalyptus grandis Hill ex Maiden e Eucalyptus torelliana F. Muell com 9, 9 e 12 anos de idade, respectivamente, plantados em solos de textura arenosa e baixa fertilidade, em Anhembi - SP. A espécie E. grandis foi a que apresentou a maior produção de biomassa para todos os compartimentos analisados, com exceção dos ramos grossos. Nas três espécies o tronco (casca + lenho) representou em média 90% da biomassa acima do solo. Os nutrientes concentraram-se de forma decrescente nas folhas, ramos, casca e lenho. As copas das árvores foram responsáveis pelo acúmulo de, aproximadamente, 24% dos nutrientes contidos na biomassa total das árvores. Na casca encontram-se as maiores quantidades de cálcio, aproximadamente 60% do total. A espécie E. grandis removeu do solo a maior quantidade de nutrientes, desenvolvendo através da queda de folhedo menores quantidades que as outras espécies. Desta forma cuidados especiais deverão ser dispensados para garantir a produtividade das rotações futuras.

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WHICH VARIABLES IN FOREST SURVEY DATA CAN BETTER DISTINGUISH CONSERVED AND DEGRADED TROPICAL DRY FOREST?

ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences ◽

10.5194/isprs-archives-xlii-3-w12-2020-309-2020 ◽

2020 ◽

Vol XLII-3/W12-2020 ◽

pp. 309-313

Author(s):

Y. Gao ◽

D. Jiménez ◽

M. Skutsch ◽

M. Salinas ◽

J. Solórzano

Keyword(s):

Statistical Study ◽

Tropical Dry Forest ◽

Canopy Cover ◽

Basal Area ◽

Remote Sensing Data ◽

Tree Height ◽

Forest Degradation ◽

Dry Forest ◽

Inventory Data ◽

Forest Survey

Abstract. This paper presents the results of a statistical study of forest inventory data for tropical dry forest in Ayuquila River Basin, Jalisco state, Mexico. The field inventory was carried out between May-June of 2019 which is at the end of dry season and the beginning of raining season. The field inventory data were collected in 43 plots of 500 m2 each which were designed in a way to include tropical dry forests in two conditions: degraded and conserved. In each plot, the collected data include DBH, tree height, number of trees per plot, and the density of tree stems. A study was carried out to find out if there are statistically significant differences variables relating to forest structure between degraded and conserved status. The Mann-Whitney test shows that there is significant differences in canopy cover, biomass, tree height, and basal area. This information is important since it helps to understand whether and how forest degradation can be detected using remote sensing data.

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Levantamento de Scolytidae (Coleoptera) em plantações de Eucalyptus spp. em Cuiabá, estado de Mato Grosso.

Ciência Florestal ◽

10.5902/198050981780 ◽

2005 ◽

Vol 14 (1) ◽

pp. 47 ◽

Cited By ~ 2

Author(s):

Alberto Dorval ◽

Otávio Peres Filho ◽

Eli Nunes Marques

Keyword(s):

Eucalyptus Camaldulensis ◽

Eucalyptus Urophylla ◽

Eucalyptus Citriodora ◽

Mato Grosso ◽

Eucalyptus Pellita ◽

Eucalyptus Camaldulensis Dehnh

Realizou-se um levantamento populacional de espécies da família Scolytidae em plantios de Eucalyptus camaldulensis Dehnh. Dehnh. Dehnh., Eucalyptus citriodora Hook. f., Eucalyptus pellita F. Muell. e Eucalyptus urophylla S.T. Blake, com auxílio de armadilhas etanólicas, modelo escolitídeo-Curitiba, no município de Cuiabá, estado de Mato Grosso, de março de 1998 a fevereiro de 1999. Foram utilizadas 24 armadilhas, sendo seis por talhão/espécie de Eucalyptus. As coletas foram quinzenais e divididas em dois períodos: seco (maio-outubro) e chuva (novembro-abril). Foram coletados um total de 19.153 indivíduos, distribuídos em 11 gêneros e 42 espécies. Nos períodos seco e chuvoso foram coletados 9.865 e 9.288 indivíduos respectivamente. Nos talhões de Eucalyptus pellita e de Eucalyptus urophylla, foram coletados as maiores quantidades de indivíduos em ambos os períodos analisados. Cryptocarenus diademantus Eggers, 1937; Cryptocarenus seriatus Eggers, 1933; Cryptocarenus heveae (Hagedorni, 1912); Hypothenemus obscurus (Fabricius, 1801) e Xyleborus spinosulus (Schedl, 1934) foram, quantitativamente, as espécies mais importantes nos plantios das quatro espécies de Eucalyptus.

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