scholarly journals Tree Species and Epiphyte Taxa Determine the “Metabolomic niche” of Canopy Suspended Soils in a Species-Rich Lowland Tropical Rainforest

Metabolites ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 718
Author(s):  
Albert Gargallo-Garriga ◽  
Jordi Sardans ◽  
Abdulwahed Fahad Alrefaei ◽  
Karel Klem ◽  
Lucia Fuchslueger ◽  
...  
Keyword(s):  
Tropical Forests ◽  
Tree Species ◽  
Forest Floor ◽  
Tropical Rainforest ◽  
Relative Proportion ◽  
Canopy Soil ◽  
Host Tree Species ◽  
Key Driver ◽  
Varied Composition

Tropical forests are biodiversity hotspots, but it is not well understood how this diversity is structured and maintained. One hypothesis rests on the generation of a range of metabolic niches, with varied composition, supporting a high species diversity. Characterizing soil metabolomes can reveal fine-scale differences in composition and potentially help explain variation across these habitats. In particular, little is known about canopy soils, which are unique habitats that are likely to be sources of additional biodiversity and biogeochemical cycling in tropical forests. We studied the effects of diverse tree species and epiphytes on soil metabolomic profiles of forest floor and canopy suspended soils in a French Guianese rainforest. We found that the metabolomic profiles of canopy suspended soils were distinct from those of forest floor soils, differing between epiphyte-associated and non-epiphyte suspended soils, and the metabolomic profiles of suspended soils varied with host tree species, regardless of association with epiphyte. Thus, tree species is a key driver of rainforest suspended soil metabolomics. We found greater abundance of metabolites in suspended soils, particularly in groups associated with plants, such as phenolic compounds, and with metabolic pathways related to amino acids, nucleotides, and energy metabolism, due to the greater relative proportion of tree and epiphyte organic material derived from litter and root exudates, indicating a strong legacy of parent biological material. Our study provides evidence for the role of tree and epiphyte species in canopy soil metabolomic composition and in maintaining the high levels of soil metabolome diversity in this tropical rainforest. It is likely that a wide array of canopy microsite-level environmental conditions, which reflect interactions between trees and epiphytes, increase the microscale diversity in suspended soil metabolomes.

Arbuscular mycorrhizal communities in tropical forests are affected by host tree species and environment

Oecologia ◽  
2003 ◽  
Vol 135 (2) ◽  
pp. 268-279 ◽  
Author(s):  
Catherine E. Lovelock ◽  
Kelly Andersen ◽  
Joseph B. Morton
Keyword(s):  
Tropical Forests ◽  
Tree Species ◽  
Arbuscular Mycorrhizal ◽  
Host Tree ◽  
Host Tree Species

scholarly journals Arbuscular mycorrhizal fungi improve the growth of pioneer tree species of tropical forests on savanna and tropical rainforest soils under nursery conditions

2021 ◽  
Vol 51 ◽  
pp. e1296
Author(s):  
Jonás Álvarez-Lopeztello ◽  
Rafael F. Del Castillo ◽  
Celerino Robles ◽  
Laura V. Hernández-Cuevas
Keyword(s):  
Arbuscular Mycorrhizal Fungi ◽  
Tropical Forests ◽  
Soil Type ◽  
Tree Species ◽  
Mycorrhizal Fungi ◽  
Tropical Rainforest ◽  
Arbuscular Mycorrhizal ◽  
Tree Seedling ◽  
Pioneer Tree Species ◽  
Pioneer Tree

Background: Tropical rainforests and savannas are often spatially distributed at close distances. The combined effects of soil type and arbuscular mycorrhizal fungi (AMF) might contribute to explain the preference of tropical rainforest tree species for forest areas over those of savannas. However, few studies have examined such effects on pioneer tropical tree species. Objective: Evaluate the effects of soil type and inoculation with an AMF consortium on the growth of seedlings of pioneer tree species of tropical rainforest. Methods: A factorial 2 x 2 experiment was conducted to evaluate the role of soil type (rainforest or savanna) and native AMF consortium on growth (height and stem diameter) of four native pioneer tree seedling species under tree nursery conditions. Results and conclusions: The highest growth was detected on rainforest soils inoculated with AMF. Uninoculated plants growing on savanna soils rendered the lowest performance. AMF inoculation could be a valuable procedure in ecological restoration projects of tropical forests.

scholarly journals Heterospecific and conspecific associations of trees in lowland tropical forest of New Guinea

2020 ◽  
Vol 21 (9) ◽  
Author(s):  
Agustinus Murdjoko ◽  
MARTHEN MATHIAS JITMAU ◽  
DONY ARISTONE DJITMAU ◽  
RIMA HERLINA SETIAWATI SIBURIAN ◽  
ANTONI UNGIRWALU ◽  
...  
Keyword(s):  
Tropical Forest ◽  
Tropical Forests ◽  
Plant Communities ◽  
Correspondence Analysis ◽  
Canonical Correspondence Analysis ◽  
Tree Species ◽  
Tropical Rainforest ◽  
New Guinea ◽  
Lowland Tropical Forest ◽  
Study Sites

Abstract. Murdjoko A, Jitmau MM, Djitmau DA, Siburian RHS, Ungirwalu A, Wanma AO, Mardiyadi Z, Rumatora A, Mofu WY, Sineri AS, Fatem SM, Worabai D, May NL, Tokede MJ, Warmetan H, Wanggai CB, Wanma JF, Sirami EV, Paembonan JB, Unenor E, Kuswandi R, Lekitoo K, Khayati L, Benu NMH, Tambing J, Saragih ASB. 2020. Heterospecific and conspecific associations of trees in lowland tropical forest of New Guinea. Biodiversitas 21: 4405-4418. The vegetation in the tropical rainforest of New Guinea consists of a large number of species that interact with each other within and among species. While several studies have attempted to reveal the diversity of flora of New Guinea, little is known about plant communities that develop associations. This study aimed to investigate the associations of tree species in lowland tropical forest in New Guinea. The associations depicted in this study were in the form of conspecific associations (among small and large individuals within same species) and heterospecific (among individuals of different species and divided into under and upper story). We established 48 rectangular plots created in Murkim and Teiraplu as part of Pegunungan Bintang Regency, Papua Province. Canonical correspondence analysis (CCA) was used to analyze heterospecific and conspecific associations. The results showed that the understory and upper story vegetation had different patterns of heterospecific association. The understory configured three heterospecific associations, consisting of 5, 13, and 90 species, while the upper story formed four heterospecific associations with 4, 8, 11, and 63 species. The analysis of conspecific associations showed of 149 tree species recorded in the study sites, only 66 species that had both small and large individuals, displaying the pattern of conspecific association. Among them, 41 species had positive associations while 25 species had negative associations. Our findings enrich the knowledge in theoretical ecology of tropical forests, especially in New Guinea.

Host associations of lianas in a south-east Queensland rain forest

2002 ◽  
Vol 18 (1) ◽  
pp. 107-120 ◽  
Author(s):  
L. D. CARSTEN ◽  
F. A. JUOLA ◽  
T. D. MALE ◽  
S. CHERRY
Keyword(s):  
Tropical Forests ◽  
Tree Species ◽  
Rain Forest ◽  
National Park ◽  
Host Tree ◽  
Tree Diameter ◽  
Tree Fruit ◽  
The World ◽  
Host Tree Species ◽  
Host Characteristics

Lianas are abundant in tropical forests around the world, yet little is known about their ecology. In this study we report the results of a survey of ten common liana species on 27 host tree species in Cooloola National Park, Queensland, Australia. We found significant associations between some liana and tree species. Our results indicate that host tree diameter was important in explaining liana presence or absence. Host tree fruit type was correlated with the presence or absence of different liana types. Tendrillar and root-climbing lianas tended to occur most often on mid-sized, fleshy-fruited trees, and on smaller, non-fleshy-fruited trees. The presence of stem twining lianas tended to decrease with increasing tree diameter for both fleshy- and non-fleshy-fruited trees, although this effect was more pronounced for fleshy-fruited trees. In general, lianas were most prevalent on trees possessing intermediate levels of bark roughness and flakiness. Although we established associative patterns between liana species and these host characteristics, the model suggested that other unidentified variables may also be important in determining presence or absence of liana species.

The Role of Tropical Forests in Supporting Biodiversity and Hydrological Integrity

2005 ◽  
Author(s):  
Ellen M. Douglas ◽  
Kate Sebastian ◽  
Charles J. Vorosmarty ◽  
Stanley Wood ◽  
Kenneth M. Chomitz
Keyword(s):  
Tropical Forests

scholarly journals Co-occurrences of tropical trees in eastern South America: disentangling abiotic and biotic forces

Plant Ecology ◽  
2021 ◽  
Author(s):  
Emma-Liina Marjakangas ◽  
Otso Ovaskainen ◽  
Nerea Abrego ◽  
Vidar Grøtan ◽  
Alexandre A. de Oliveira ◽  
...  
Keyword(s):  
South America ◽  
Tree Species ◽  
Large Scale ◽  
Environmental Filtering ◽  
Limiting Similarity ◽  
Phylogenetic Relatedness ◽  
Biogeographical Regions ◽  
Dependent Processes ◽  
Occurrence Of Species

AbstractSpecies co-occurrences in local communities can arise independent or dependent on species’ niches. However, the role of niche-dependent processes has not been thoroughly deciphered when generalized to biogeographical scales, probably due to combined shortcomings of data and methodology. Here, we explored the influence of environmental filtering and limiting similarity, as well as biogeographical processes that relate to the assembly of species’ communities and co-occurrences. We modelled jointly the occurrences and co-occurrences of 1016 tropical tree species with abundance data from inventories of 574 localities in eastern South America. We estimated species co-occurrences as raw and residual associations with models that excluded and included the environmental effects on the species’ co-occurrences, respectively. Raw associations indicate co-occurrence of species, whereas residual associations indicate co-occurrence of species after accounting for shared responses to environment. Generally, the influence of environmental filtering exceeded that of limiting similarity in shaping species’ co-occurrences. The number of raw associations was generally higher than that of the residual associations due to the shared responses of tree species to the environmental covariates. Contrary to what was expected from assuming limiting similarity, phylogenetic relatedness or functional similarity did not limit tree co-occurrences. The proportions of positive and negative residual associations varied greatly across the study area, and we found a significant tendency of some biogeographical regions having higher proportions of negative associations between them, suggesting that large-scale biogeographical processes limit the establishment of trees and consequently their co-occurrences.

scholarly journals El Niño-Southern Oscillation affects the water relations of tree species in the Yucatan Peninsula, Mexico

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Jorge Palomo-Kumul ◽  
Mirna Valdez-Hernández ◽  
Gerald A. Islebe ◽  
Manuel J. Cach-Pérez ◽  
José Luis Andrade
Keyword(s):  
Water Potential ◽  
Leaf Area ◽  
Tropical Forests ◽  
Specific Leaf Area ◽  
Tree Species ◽  
Deciduous Species ◽  
Mature Trees ◽  
Seasonally Dry ◽  
Seasonally Dry Tropical Forests ◽  
Dry Tropical Forests

AbstractWe evaluated the effect of ENSO 2015/16 on the water relations of eight tree species in seasonally dry tropical forests of the Yucatan Peninsula, Mexico. The functional traits: wood density, relative water content in wood, xylem water potential and specific leaf area were recorded during the rainy season and compared in three consecutive years: 2015 (pre-ENSO conditions), 2016 (ENSO conditions) and 2017 (post-ENSO conditions). We analyzed tree size on the capacity to respond to water deficit, considering young and mature trees, and if this response is distinctive in species with different leaf patterns in seasonally dry tropical forests distributed along a precipitation gradient (700–1200 mm year−1). These traits showed a strong decrease in all species in response to water stress in 2016, mainly in the driest site. Deciduous species had lower wood density, higher predawn water potential and higher specific leaf area than evergreen species. In all cases, mature trees were more tolerant to drought. In the driest site, there was a significant reduction in water status, regardless of their leaf phenology, indicating that seasonally dry tropical forests are highly vulnerable to ENSO. Vulnerability of deciduous species is intensified in the driest areas and in the youngest trees.

scholarly journals Impact of Harvest Conditions and Host Tree Species on Chemical Composition and Antioxidant Activity of Extracts from Viscum album L.

Molecules ◽  
2021 ◽  
Vol 26 (12) ◽  
pp. 3741
Author(s):  
Wioleta Pietrzak ◽  
Renata Nowak
Keyword(s):  
Antioxidant Activity ◽  
Biological Activity ◽  
Chemical Composition ◽  
Tree Species ◽  
Plant Material ◽  
Plant Secondary Metabolites ◽  
Host Tree ◽  
Host Tree Species ◽  
High Antioxidant Activity ◽  
Mistletoe Extracts

The content of plant secondary metabolites is not stable, and factors such as the region/location effect and seasonal variations have an impact on their chemical composition, especially in parasitic plants. Research in this area is an important step in the development of quality parameter standards of medicinal plants and their finished products. The effects of the time and place of harvest and the host tree species on the chemical composition and antioxidant activity of mistletoe extracts were investigated. Statistical tools were used to evaluate the results of the spectrophotometric and LC-ESI-MS/MS studies of the phenolic composition and antioxidant activity. The investigations indicate that the qualitative and quantitative composition, influencing the biological activity of mistletoe extracts, largely depends on the origin of the plant. The mistletoe extracts exhibited a rich phenol profile and high antioxidant activity. The chemometric analysis indicated that mistletoe collected from conifers (Viscum abietis and Viscum austriacum) had the most advantageous chemical composition and antioxidant activity. Moreover, the chemical profile and biological activity of the plant material were closely related to the climatic conditions and location of the harvested plant. Higher levels of phenolic compounds and high antioxidant activity were found in extracts obtained from plant material collected in cold weather with the presence of snow and less sunshine (autumn–winter period).

Sign in / Sign up

Export Citation Format

Share Document