scholarly journals Soil Nematode Communities in Managed and Natural Temperate Forest

Diversity ◽  
2021 ◽  
Vol 13 (7) ◽  
pp. 327
Author(s):  
Andrea Čerevková ◽  
Marek Renčo ◽  
Dana Miklisová ◽  
Erika Gömöryová
Keyword(s):  
Forest Management ◽  
Temperate Forest ◽  
High Abundance ◽  
Stand Age ◽  
Total Biomass ◽  
Soil Nematode ◽  
Old Growth ◽  
Nematode Communities ◽  
Old Growth Forest ◽  
Nematode Abundance

Forest management and the stand age play key roles in determining the composition of soil biota, including nematodes. We analysed the effect of the interaction between stands of natural forest and stands influenced by human activity on nematode communities, necessary for realistically assessing the specific potentials of forest soils, plant protection, forest management, and land use management. Nematode communities were evaluated and compared in managed beech and spruce forests in three age classes (0–20, 40–60, and 100–120 years old) and an unmanaged old-growth temperate forest. A total of 51 nematode genera were found in the forests. The number of nematode genera was the highest (46) in European beech forests, dominated by Rhabditis and Filenchus. In contrast, the number of nematode genera was the lowest (37) in a Norway spruce forest, but where nematode abundance was the highest due mostly to the high abundance of bacterivorous nematodes such as Acrobeloides, Plectus, and Rhabditis. The unmanaged old-growth forest had the lowest nematode abundance and total biomass but the highest abundance of herbivorous nematodes of the order Tylenchida, especially Filenchus, Malenchus, and Paratylenchus, and a high abundance of identified genera of predators. The number of identified nematode genera, abundance, total biomass, and diversity index were the highest in young 0–20-year-old stands, and the lowest in 100–120-year-old stands. Enrichment, structure, and basal indices were influenced by both the stands and the ages of the forests.

scholarly journals Altitudinal gradient affect abundance, diversity and metabolic footprint of soil nematodes in Banihal-Pass of Pir-Panjal mountain range

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Shahid Afzal ◽  
Humira Nesar ◽  
Zarrin Imran ◽  
Wasim Ahmad
Keyword(s):  
Elevation Gradient ◽  
Carbon Assimilation ◽  
Shannon Index ◽  
Nematode Community ◽  
Mountain Range ◽  
Soil Nematode ◽  
Nematode Communities ◽  
Nematode Abundance ◽  
Belowground Carbon ◽  
Abundance And Diversity

AbstractDespite enormous diversity, abundance and their role in ecosystem processes, little is known about how community structures of soil-inhabiting nematodes differ across elevation gradient. For this, soil nematode communities were investigated along an elevation gradient of 1000–2500 masl across a temperate vegetation in Banihal-Pass of Pir-Panjal mountain range. We aimed to determine how the elevation gradient affect the nematode community structure, diversity and contribution to belowground carbon assimilation in the form of metabolic footprint. Our results showed that total nematode abundance and the abundance of different trophic groups (fungivores, herbivores and omnivores) declined with the increase of elevation. Shannon index, generic richness and evenness index indicated that nematode communities were more diverse at lower elevations and declined significantly with increase in elevation. Nematode community showed a pattern of decline in overall metabolic footprint with the increase of elevation. Nematode abundance and diversity proved to be more sensitive to elevation induced changes as more abundant and diverse nematode assemblage are supported at lower elevations. Overall it appears nematode abundance, diversity and contribution to belowground carbon cycling is stronger at lower elevations and gradually keep declining towards higher elevations under temperate vegetation cover in Banihal-pass of Pir-Panjal mountain range.

scholarly journals Forest management has reduced the structural diversity of residual boreal old-growth forest landscapes in Eastern Canada

2020 ◽  
Vol 458 ◽  
pp. 117765 ◽  
Author(s):  
Maxence Martin ◽  
Yan Boucher ◽  
Nicole J. Fenton ◽  
Philippe Marchand ◽  
Hubert Morin
Keyword(s):  
Forest Management ◽  
Structural Diversity ◽  
Eastern Canada ◽  
Old Growth ◽  
Old Growth Forest

Effects of simulated nitrogen deposition on temperate forest soil nematode communities and their metabolic footprints

2018 ◽  
Vol 38 (2) ◽  
Author(s):  
程云云 CHENG Yunyun ◽  
孙涛 SUN Tao ◽  
王清奎 WANG Qingkui ◽  
梁文举 LIANG Wenju ◽  
张晓珂 ZHANG Xiaoke
Keyword(s):  
Forest Soil ◽  
Nitrogen Deposition ◽  
Temperate Forest ◽  
Soil Nematode ◽  
Nematode Communities ◽  
Soil Nematode Communities

scholarly journals Old-growth forest values: A narrative study of six Canadian forest leaders

2010 ◽  
Vol 86 (2) ◽  
pp. 256-262 ◽  
Author(s):  
Joanne M Moyer ◽  
Peter N Duinker ◽  
Fay G Cohen
Keyword(s):  
Forest Management ◽  
Sustainable Management ◽  
Ecological Systems ◽  
Forest Sector ◽  
Old Growth ◽  
Narrative Study ◽  
Old Growth Forest ◽  
The Subject ◽  
Forest Values ◽  
Depth Interviews

Old-growth forest is the subject of widespread conflict. Understanding associated values and attitudes in society is necessary for its sustainable management. We investigated old-growth values through a narrative study employing in-depth interviews with six leaders in Canada’s forest sector. Old-growth forest was valued for its natural ecological systems, biotic components, and experiential aspects. The study highlights the importance of value discourse within the forest sector. Key words: old-growth forest, values, Canada, forest management

Is regulated even-aged management the right strategy for the Canadian boreal forest?

2004 ◽  
Vol 80 (4) ◽  
pp. 458-462 ◽  
Author(s):  
Yves Bergeron
Keyword(s):  
Forest Management ◽  
Boreal Forest ◽  
Biological Diversity ◽  
Fire Regime ◽  
Age Distribution ◽  
Fire Frequency ◽  
Stand Age ◽  
Old Growth ◽  
Old Growth Forests ◽  
Canadian Boreal Forest

Over the past decade, there has been an increasing interest in the development of forest management approaches that are based on an understanding of historical natural disturbance dynamics. The rationale for such an approach is that management to favour landscape compositions and stand structures similar to those of natural ecosystems should also maintain biological diversity and essential ecological functions. In fire-dominated landscapes, this approach is possible only if current and future fire frequencies are sufficiently low, in comparison to pre-industrial fire frequency, that we can substitute fire with forest management. I address this question by comparing current and future fire frequency to historical reconstruction of fire frequency from studies in the Canadian boreal forest. Current and simulated future fire frequencies using 2× and 3×CO2 scenarios are lower than the historical fire frequency for most sites, suggesting that forest management could potentially be used to recreate the forest age structure of fire-controlled pre-industrial landscapes. Current even-aged management, however, tends to reduce forest variability: for example, fully regulated, even-aged management will tend to truncate the natural forest stand age distribution and eliminate overmature and old-growth forests from the landscape. The development of silvicultural techniques that maintain a spectrum of forest compositions and structures at different scales in the landscape is one avenue to maintain this variability. Key words: boreal forest, even aged management, fire regime, old-growth forests, climate change, partial cutting

scholarly journals STAND STRUCTURE OF A CALABRIAN PINE OLD-GROWTH FOREST: INDICATIONS FOR FOREST MANAGEMENT AND LANDSCAPE CONSERVATION

2010 ◽  
pp. 529-544 ◽  
Author(s):  
Orazio Ciancio ◽  
Francesco Iovino ◽  
Giuliano Menguzzato ◽  
Antonino Nicolaci ◽  
Antonella Veltri
Keyword(s):  
Forest Management ◽  
Stand Structure ◽  
Landscape Conservation ◽  
Old Growth ◽  
Old Growth Forest ◽  
Calabrian Pine

scholarly journals Soil Nematode Fauna and Microbial Characteristics in an Early-Successional Forest Ecosystem

Forests ◽  
2019 ◽  
Vol 10 (10) ◽  
pp. 888 ◽  
Author(s):  
Renčo ◽  
Čerevková ◽  
Gömöryová
Keyword(s):  
Soil Moisture ◽  
Moisture Content ◽  
Microbial Activity ◽  
Soil Moisture Content ◽  
Soil Nematode ◽  
Nematode Communities ◽  
Functional Guilds ◽  
Ecosystem Disturbance ◽  
Plant Parasites ◽  
Nematode Abundance

Windstorms can often decrease the diversity of native local biota in European forests. The effects of windstorms on the species richness of flora and fauna in coniferous forests of natural reserves are well established, but the effects on biotas in productive deciduous forests have been less well studied. We analyzed the impact of windstorms on the diversity and abundance of soil nematode communities and microbial activity and their relationships with the succession of plant species and basic soil physicochemical properties 12 and 36 months after a windstorm in Fagus sylvatica forests. The relationships were investigated in cleared early-successional forest ecosystems and at undamaged forest sites as a control. The windstorm significantly affected total nematode abundance, number of nematode species, and the diversity and abundance of all nematode functional guilds, but no functional guilds disappeared after the disturbance. The abundance of several nematode taxa but not total nematode abundance was positively correlated with soil-moisture content. Indices of the nematode communities were inconsistent between sites due to their variable ability to identify ecosystem disturbance 12 months after the storm. In contrast, the metabolic activity of various functional groups identified ecosystem disturbance well throughout the study. Positive correlations were identified between the number of plant parasites and soil-moisture content and between carnivore abundance and soil pH. Positive mutual links of some nematode genera (mainly plant parasites) with the distribution of dominant grasses and herbs depended on the habitat. In contrast, microbial activity differed significantly between disturbed and undisturbed sites up to 36 months after the storm, especially soil basal respiration, N mineralization, and microbial biomass. Our results indicated different temporal responses for two groups of soil organisms to the destruction of the tree canopy. Soil nematodes reacted immediately, but changes in the microbial communities were visible much later after the disturbance.

Evaluating the influence of integrative forest management on old-growth habitat structures in a temperate forest region

2017 ◽  
Vol 216 ◽  
pp. 101-107 ◽  
Author(s):  
Thomas A. Nagel ◽  
Dejan Firm ◽  
Rok Pisek ◽  
Tomaz Mihelic ◽  
David Hladnik ◽  
...  
Keyword(s):  
Forest Management ◽  
Temperate Forest ◽  
Old Growth ◽  
Forest Region

scholarly journals Nature Restoration Shifts the Abundance and Structure of Soil Nematode Communities in Subtropical China

2021 ◽  
Author(s):  
Jianqing Wang ◽  
Yingfeng Zheng ◽  
Xiuzhen Shi ◽  
Shu Kee Lam ◽  
Manuel Esteban Lucas-Borja ◽  
...  
Keyword(s):  
Food Web ◽  
Secondary Succession ◽  
Forest Stand ◽  
Nematode Community ◽  
Stand Age ◽  
Soil Nematode ◽  
Soil Food Web ◽  
Nature Restoration ◽  
Soil Nematode Community ◽  
Nematode Abundance

Abstract Aims Soil nematode community is an important component of the soil food web, which has been widely recognized as a key bio-indicator for assessing the influence of nature restoration on ecological functions. However, the dynamics of the abundance, diversity and function of soil nematode community remain unclear under different forest succession phases. Methods The soil nematode community of natural secondary forests was investigated using a chronosequence approach. Nature restoration for five succession stages were sampled in this study to represent a wide range of stand age groups.Results Soil nematode abundance gradually increased with forest stand age, which reached a peak value (574 individuals 100 g-1 dry soil) in the older age classes. In contrast, soil nematode diversity was not affected by forest stand age. Soil available nitrogen and phosphorus were key factors influencing soil nematode abundance and diversity during forest secondary succession. The plant parasite index decreased with forest stand age, which indicated that ecosystem function and health would be improved as nature restoration progresses. In addition, the structure of soil nematode community was more sensitive to forest secondary succession compared to plant community and soil microbial community. The bottom-up effects of the plant and microbial communities on soil nematode community were important drivers of nematode community structure in subtropical forests. Conclusions Overall, this study demonstrates the active responses of soil nematode community to nature restoration, and highlights the importance of the above-ground and below-ground interactions to the soil food web.

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