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Forestry

Salicylic acid induces physiological and biochemical changes in Torreya grandis cv. Merrillii seedlings under drought stress
submitted by 52 minutes ago - Topic: Forestry
SA treatment effectively ameliorated the negative effect of moderate drought stress onT. grandisSeedlings through increasing the water content, Pn, proline content, antioxidant enzymes activity and reducing MDA. Water availability is one of the most critical factors that limits the growth and development of plants. Salicylic acid (SA) is an important signal molecule that modulates plant respons...



Structure and function of the neck cell during fertilization in Ginkgo biloba L
submitted by 52 minutes ago - Topic: Forestry
Neck cells inGinkgo bilobacontribute to archegonial opening through morphological changes and might be involved in the production of fertilization liquid to attract spermatozoids toward archegonia. Neck cells are an essential part of the archegonium in archegoniate gymnosperms, but their function in the sexual reproductive process remains unclear, particularly in zoidogamous gymnosperms. To cla...

High-resolution analysis of stem radius variations in black spruce [Picea mariana (Mill.) BSP] subjected to rain exclusion for three summers
submitted by 52 minutes ago - Topic: Forestry
A rain exclusion repeated for 3 years resulted in larger summer stem contractions in three of the sites in the third year of the experiment and in larger winter contractions in the northern sites. However, there was no pronounced stress reaction in the stem radius variations of mature black spruce since total stem expansion was not reduced. Future climate warming is expected to produce more se...

Physiological adaptations of five poplar genotypes grown under SRC in the semi-arid Mediterranean environment
submitted by 52 minutes ago - Topic: Forestry
The genotype ‘Neva’ under high plant density showed the highest biomass yield and optimal physiological strategies and could be the most suitable choice under semi-arid environmentThe poplars (Populus spp.) are the most sensitive plants to water deficit conditions among the woody species utilized for biomass production for energetic purposes; their productivity is associated with water avai...

Resistant poplar genotypes inhibit pseudogall formation by the wooly poplar aphid, Phloeomyzus passerinii Sign
submitted by 52 minutes ago - Topic: Forestry
Phloeomyzus passeriniican induce a pseudogall within the bark of susceptible poplar genotypes, while in resistant genotypes the induction seems to be impeded by lignification processes.Phloeomyzus passerinii is a major pest of poplar stands in Europe, North Africa and the Near East. This aphid feeds in the cortical parenchyma of different poplar species and hybrids, and can affect their growth ...



Water utilization of Pinus sylvestris var. mongolica in a sparse wood grassland in the semiarid sandy region of Northeast China
submitted by 52 minutes ago - Topic: Forestry
Mongolian pine in a sparse wood grassland stand maintains a relatively stable state under the current water conditions by varying its water use sources at a constant water use efficiency. In a semi-arid sandy ecosystem, water is one of the most important factors influencing survival and growth of Mongolian pine in a sparse wood grassland (MPSWG); however, the mechanism of water utilization of M...

Estimation of greenhouse gas balance for forestry-drained peatlands
submitted by 4 hours ago - Topic: Forestry
In this study, 1) a model to estimate soil carbon dioxide (CO2) balance for forestry-drained peatlands was tested on site and countrywide levels in Finland. 2) A dataset of annual soil-atmosphere fluxes of CO2, methane (CH4) and nitrous oxide (N2O) from 68 sites was collected, and models fitted for their upscaling to a countrywide level. 3) The current greenhouse gas impact of the 68 study site...


Development and activity of early saproxylic fungal communities in harvested and unmanaged boreal mixedwood stands
submitted by 5 hours ago - Topic: Forestry
Limited scientific information is currently available regarding saproxylic fungal communities in the boreal forest of North America. We aimed to characterize the community development, richness and activity of saproxylic fungi on fresh wood in harvested and unmanaged boreal mixedwood stands of northwestern Québec (Canada). Fresh wood blocks (n = 480) of balsam fir (Abies balsamea (L.) Mill.)...

The effect of thinning on ground spider diversity and microenvironmental factors of a subtropical spruce plantation forest in East Asia
submitted by 5 hours ago - Topic: Forestry
Currently, information about the effect of forest management on biodiversity of subtropical plantation forests in Asia is quite limited. In this study, we compared the spider community structures and guild compositions of subtropical Cryptomeria japonica plantation forests receiving different degree of thinning (0, 25 and 50 %) in central Taiwan. The ground spider diversities and environmental...


Effects of site preparation and slash management on growth and understory vegetation of Eucalyptus globulus plantations along a rotation time span in Portugal
submitted by 5 hours ago - Topic: Forestry
The removal or maintenance of harvest residues in eucalypt plantations may influence site quality and productivity. Removal of slash from the site may facilitate further management operations and provide a valuable energy resource, but effects on site productivity and sustainability for a rotation time span were not yet assessed under Mediterranean conditions. Therefore, a study was carried out...

Age determination of coarse woody debris with radiocarbon analysis and dendrochronological cross-dating
submitted by 5 hours ago - Topic: Forestry
To study the decay of coarse woody debris (CWD) in forest ecosystems, it is necessary to determine the time elapsed since tree death, which is difficult at advanced decay stages. Here, we compare two methods for age determination of CWD logs, dendrochronological cross-dating and radiocarbon analysis of the outermost tree ring. The methods were compared using samples from logs of European beech,...


Introduction of Mandshurian ash (Fraxinus mandshurica Rupr.) to Estonia: Is it related to the current epidemic on European ash (F. excelsior L.)?
submitted by 5 hours ago - Topic: Forestry
Recent investigations in Japan have suggested that the causal organism of the ongoing epidemic affecting European ash (Fraxinus excelsior) in Europe, Hymenoscyphus pseudoalbidus, may originate in East Asia. The fungus may have been unintentionally carried to Europe during the introduction of Mandshurian ash (F. mandshurica), the host tree of the fungus in East Asia. Still unicentric emergence h...

Nitrogen and Carbon Biogeochemistry in Forest Sites along an Indirect Urban–Rural Gradient in Southeastern Michigan
submitted by 9 hours ago - Topic: Forestry
To evaluate the impacts of urbanization on soil and vegetation in protected forest areas, 12 forest sites in Southeastern Michigan USA were studied in an indirect urban–rural gradient. Field study plots were established in forest edge zones of each protected area. Significant findings were that in these edge zones of protected areas: (a) soil nitrogen tended to be greater where surrounding h...

Carbon Stocks and Climate Change: Management Implications in Northern Arizona Ponderosa Pine Forests
submitted by 9 hours ago - Topic: Forestry
Researchers have observed climate-driven shifts of forest types to higher elevations in the Southwestern US and predict further migration coupled with large-scale mortality events proportional to increases in radiative forcing. Range contractions of forests are likely to impact the total carbon stored within a stand. This study examines the dynamics of Pinus ponderosa stands under three climate...

Multi-Scalar Governance for Restoring the Brazilian Atlantic Forest: A Case Study on Small Landholdings in Protected Areas of Sustainable Development
submitted by 9 hours ago - Topic: Forestry
Implementation of forest restoration projects requires cross-scale and hybrid forms of governance involving the state, the market, civil society, individuals, communities, and other actors. Using a case study from the Atlantic Forest Hotspot, we examine the governance of a large-scale forest restoration project implemented by an international non-governmental organization (NGO) on family farmer...



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