scholarly journals Changes in Soil Arthropod Abundance and Community Structure across a Poplar Plantation Chronosequence in Reclaimed Coastal Saline Soil

Forests ◽  
2018 ◽  
Vol 9 (10) ◽  
pp. 644 ◽  
Author(s):  
Yuanyuan Li ◽  
Han Chen ◽  
Qianyun Song ◽  
Jiahui Liao ◽  
Ziqian Xu ◽  
...  
Keyword(s):  
Community Dynamics ◽  
Stand Age ◽  
Stand Development ◽  
Soil Arthropods ◽  
Total Abundance ◽  
Soil Arthropod ◽  
Plantation Development ◽  
Poplar Plantations ◽  
Hill Numbers ◽  
One Year

Poplar plantations have the capacity to improve the properties of soils in muddy coastal areas; however, our understanding of the impacts of plantation development on soil arthropods remains limited. For this study, we determined the community dynamics of soil dwelling arthropods across poplar plantations of different ages (5-, 10-, and 21-years) over the course of one year in Eastern Coastal China. The total abundance of soil arthropods differed with stand development. Further, there were some interactions that involved the sampling date. On average, total abundance was highest in the 10-year-old stands and lowest in the 5-year-old stands. Total abundance exhibited strong age-dependent trends in June and September, but not in March or December. The abundance of Prostigmata and Oribatida increased in the 5- to 21-year-old stands, with the highest levels being in the 10-year-old stands. The abundance of Collembola increased with stand development; however, the stand age had no significant impact on the abundance of epedapic, hemiedaphic, and euedaphic Collembola. Order richness (Hill number q = 0) curve confidence intervals overlapped among three stand ages. Shannon and Simpson diversity (Hill numbers q = 1 and q = 2) differed between 10- and 21-year-old stand age. They showed almost similar trends, and the highest and lowest values were recorded in the 21- and 10-year-old stand ages, respectively. Permutational multivariate analysis of variance demonstrated that composition also varied significantly with the sampling date and stand age, and the 10-year-old stands that were sampled in June stood well-separated from the others. Indicator analysis revealed that Scolopendromorpha and Prostigmata were indicators in June for the 10-year-old stands, while Collembola were indicators for the 21-year-old stands sampled in September. Our results highlight that both stand development and climate seasonality can significantly impact soil arthropod community dynamics in the reclaimed coastal saline soils of managed poplar plantations.

scholarly journals Zooplankton community dynamics and environmental factors in Lake Ozeros (Greece)

2013 ◽  
Vol 14 (3) ◽  
pp. 32 ◽  
Author(s):  
E. CHALKIA ◽  
G. KEHAYIAS
Keyword(s):  
Community Dynamics ◽  
Zooplankton Community ◽  
Trophic State Index ◽  
Zooplankton Abundance ◽  
The Novel ◽  
Effective Management ◽  
Eutrophic Lakes ◽  
State Index ◽  
The Mean ◽  
One Year

A one year investigation of the zooplankton community composition and dynamics in Lake Οzeros (western Greece) revealed 25 invertebrate species (16 rotifers, three copepods, five cladocerans and one mollusc larva). The mean zooplankton abundance fluctuated between 59.4 to 818 ind l-1, having maximum values in spring. The species composition and seasonal variation do not differentiate Lake Ozeros from the nearby lakes. The presence of the dominant calanoid copepod Eudiaptomus drieschi and some of the rotifer species recorded are characteristics of either oligo- or eutrophic lakes. According to the trophic state index (TSI) Lake Ozeros is a meso-eutrophic ecosystem, in which the eutrophic character was possibly the result of the high charge with phosphorus (being raised by 28.9 % in comparison to previous decades), which came into the lake via the surrounding agricultural cultivations and mainly the pig-raising activities. In contrast, the concentrations of ΝΟ3, ΝΟ2 and NH4 have considerably decreased possibly due to the termination of the tobacco cultivations around the lake during the last years. The novel information on the abiotic and especially the biotic elements of Lake Ozeros provided by the present study can contribute to the effective management of this aquatic ecosystem in the future.

scholarly journals Arthropod community at different altitudes in Gunung Halimun-Salak National Park, Western Java, Indonesia

2019 ◽  
Vol 20 (6) ◽  
Author(s):  
NOOR FARIKHAH HANEDA ◽  
IWAN HILWAN ◽  
EWI IRFANI
Keyword(s):  
National Park ◽  
Pearson Correlation ◽  
Principal Component ◽  
Environmental Parameters ◽  
Soil Arthropods ◽  
Arthropod Community ◽  
Total N ◽  
Organic C ◽  
Soil Arthropod ◽  
Different Altitudes

Abstract. Haneda NF, Hilwan I, Irfani E. 2019. Arthropod community at different altitudes in Gunung Halimun-Salak National Park, Western Java, Indonesia. Biodiversitas 20: 1735-1742. Gunung Halimun Salak National Park (GHSNP) stores high biodiversity both from its flora and fauna. Parts of the diversity that have not been widely explored are soil arthropods at different altitudes. The aim of this study was to analyze soil arthropod community and the correlation between the attributes of soil arthropods and the environmental factors. The soil arthropods were collected using pitfall traps, placed in several altitudes, i.e., 500 m, 700 m, 900 m, 1100 m, 1300 m, 1500 m, and 1700 m . The attributes of community and environmental parameters were analyzed using Pearson correlation and principal component analysis. The result showed that family Formicidae dominated the soil arthropod community. The diversity of arthropods increased with increasing altitudes. The habitat at the altitudes of 1500 m, 1300 m and 1100 m had a dense canopy, thick litter and high total N and organic C. There was positive correlation between the attributes of soil arthropod community and environment variables.

The effect of cutting technique on the mortality and re-sprouting vigor of poplar stumps in short-rotation plantations

2020 ◽  
Author(s):  
Raffaele Spinelli ◽  
Natascia Magagnotti ◽  
Carolina Lombardini ◽  
Elaine Cristina Leonello
Keyword(s):  
Cost Effective ◽  
Populus Nigra ◽  
Effective Solution ◽  
Shoot Height ◽  
Hybrid Poplars ◽  
Short Rotation ◽  
Preliminary Study ◽  
Poplar Plantations ◽  
One Year ◽  
The Cost

Mechanical felling is the cost-effective solution for harvesting short-rotation poplar plantations, but the damage inflicted by conventional shear cutting devices on tree stumps has raised concerns about stump mortality and re-sprouting vigor - both crucial to coppice regeneration. In order to determine if such concerns are justified, the experiment monitored the survival and resprouting vigor of eleven sample blocks, composed of two 10-stump row segments cut according to either of two methods: 1) lternately with a chainsaw (control) or 2) and with an excavator-mounted shear. The sample blocks were located within the same plantation, established 7 years earlier with hybrid poplars (Populus nigra x P. deltoides), belonging to the "AF8" clone. One year after cutting, no differences were found between treatments in terms of stump mortality, number of shoots per stump, shoot diameter at 30 cm from the insertion and shoot height. These results support the use of mechanical shears to fell short-rotation poplar coppice. However, further studies should be conducted on multiple fields and clones for a safe generalization of this preliminary study.

Biomass partitioning in red pine (Pinus resinosa) along a chronosequence in the Upper Peninsula of Michigan

2007 ◽  
Vol 37 (1) ◽  
pp. 93-102 ◽  
Author(s):  
J S King ◽  
C P Giardina ◽  
K S Pregitzer ◽  
A L Friend
Keyword(s):  
Net Primary Production ◽  
Pinus Resinosa ◽  
Biomass Partitioning ◽  
Red Pine ◽  
Stand Age ◽  
Shoot Biomass ◽  
Stand Development ◽  
Individual Tree ◽  
Coarse Root ◽  
Age Related

Carbon (C) allocation to the perennial coarse-root system of trees contributes to ecosystem C sequestration through formation of long-lived live wood biomass and, following senescence, by providing a large source of nutrient-poor detrital C. Our understanding of the controls on C allocation to coarse-root growth is rudimentary, but it has important implications for projecting belowground net primary production responses to global change. Age-related changes in C allocation to coarse roots represent a critical uncertainty for modeling landscape-scale C storage and cycling. We used a 55 year chronosequence approach with complete above- and below-ground harvests to assess the effects of stand development on biomass partitioning in red pine (Pinus resinosa Ait.), a commercially important pine species. Averaged within site, individual-tree root/shoot ratios were dynamic across stand development, changing from 0.17 at 2-, 3-, and 5-year-old sites, to 0.80 at the 8-year-old site, to 0.29 at the 55-year-old site. The results of our study suggest that a current research challenge is to determine the generality of patterns of root-shoot biomass partitioning through stand development for both coniferous and hardwood forest types, and to document how these patterns change as a function of stand age, tree size, environment, and management.

scholarly journals Establishment of white poplar clonal plantations by stools

Topola ◽  
2021 ◽  
pp. 11-20
Author(s):  
Branislav Kovačević ◽  
Duško Bastajić ◽  
Slađana Dabić ◽  
Zoran Novčić ◽  
Zoran Galić ◽  
...  
Keyword(s):  
Survival Rate ◽  
Deep Level ◽  
Underground Water ◽  
High Survival ◽  
White Poplar ◽  
Rooted Cuttings ◽  
Clonal Plantation ◽  
Poplar Plantations ◽  
One Year ◽  
The One

The results of white poplar clonal plantation establishment by stools are presented. The trials were established at three sites, characterized by favorable water regime for growth and development of poplars. Also, the effect of different factors on survival rate, diameter at breast height and plants' height was analyzed. Results suggest that similar high survival rate (90-100%) was achieved by planting of stools on depth of 2.5 m (deep planting), as it was achieved by planting of rooted cuttings at the depth of 0.8 m, which is a comon practise in the establishment of white poplar plantations. The survival rate of planted stools did not decrease signifficantly between the end of the first and second growing season. Selected clones achieved survival rate of Villafranca clone with both methods of planting. Two-year old rootless shoots (2/0 type of plantings) achieved higher survival rate than the one-year old ones (1/0 type) and two-year old rooted cuttings (2/2 type). Survival rate of one-year old rootless shoots (1/0 type) planted at the depth of 0.8 m was not significantly lower than of those planted at the depth of 2.5 m, but it was notably lower than survival rate of rooted cuttings (1/1 type). Establishment of white poplar clones by stools could significantly improve white poplar wood production, considering the benefits of plants production in stool beds. The potential for improvement of the establishment of white poplar plantations on sandy soils with relatively deep level of underground water, and the potential for successful planting of difficult-to-root white poplar genotypes, should be the subject of further studies.

scholarly journals Impact of Agroecological Practices on Greenhouse Vegetable Production: Comparison among Organic Production Systems

Agronomy ◽  
2019 ◽  
Vol 9 (7) ◽  
pp. 372 ◽  
Author(s):  
Corrado Ciaccia ◽  
Francesco Giovanni Ceglie ◽  
Giovanni Burgio ◽  
Suzana Madžarić ◽  
Elena Testani ◽  
...  
Keyword(s):  
Soil Fertility ◽  
Comprehensive Evaluation ◽  
Positive Impact ◽  
Organic Production ◽  
Soil Parameters ◽  
Vegetable Production ◽  
Soil Arthropods ◽  
Soil Fertility Management ◽  
Soil Arthropod

In greenhouses, where intensive systems are widely used for organic production, the differences between “conventionalized” and agroecological approaches are especially evident. Among the agronomic practices, green manure from agroecological service crops (ASCs) and organic amendments represent the main tools for soil fertility management with respect to the substitution of synthetic fertilizer with organic ones (the input substitution approach). Over a two-year organic rotation, we compared a conventionalized system (SB) and two agroecological systems, characterized by ASC introduction combined with the use of manure (AM) and compost (AC) amendments. A system approach was utilized for the comparison assessment. For this purpose, agronomic performance, soil fertility and the density of soil arthropod activity were monitored for the entire rotation. The comprehensive evaluation of the parameters measured provided evidence that clearly differentiated SB from AM and AC. The drivers of discrimination were soil parameters referring to long term fertility and soil arthropod dynamics. The study confirmed the higher productivity of SB but also no positive impact on soil fertility and soil arthropods, as highlighted by AM and AC. Based on the results, a trade-off between productivity and the promotion of long-term ecosystem diversity and functioning is needed for the assessment of systems of organic production.

scholarly journals Organic vs. organic – soil arthropods as bioindicators of ecological sustainability in greenhouse system experiment under Mediterranean conditions

2017 ◽  
Vol 108 (5) ◽  
pp. 625-635 ◽  
Author(s):  
Suzana Madzaric ◽  
F.G. Ceglie ◽  
L. Depalo ◽  
L. Al Bitar ◽  
G. Mimiola ◽  
...  
Keyword(s):  
Soil Fertility ◽  
Organic Farming ◽  
Crop Rotation ◽  
Cover Crops ◽  
Organic Liquid ◽  
Organic Production ◽  
Ecological Sustainability ◽  
Soil Arthropods ◽  
The European Union ◽  
Soil Arthropod

AbstractOrganic greenhouse (OGH) production is characterized by different systems and agricultural practices with diverse environmental impact. Soil arthropods are widely used as bioindicators of ecological sustainability in open field studies, while there is a lack of research on organic production for protected systems. This study assessed the soil arthropod abundance and diversity over a 2-year crop rotation in three systems of OGH production in the Mediterranean. The systems under assessment differed in soil fertility management: SUBST – a simplified system of organic production, based on an input substitution approach (use of guano and organic liquid fertilizers), AGROCOM – soil fertility mainly based on compost application and agroecological services crops (ASC) cultivation (tailored use of cover crops) as part of crop rotation, and AGROMAN – animal manure and ASC cultivation as part of crop rotation. Monitoring of soil fauna was performed by using pitfall traps and seven taxa were considered: Carabidae, Staphylinidae, Araneae, Opiliones, Isopoda, Myriapoda, and Collembola. Results demonstrated high potential of ASC cultivation as a technique for beneficial soil arthropod conservation in OGH conditions. SUBST system was dominated by Collembola in all crops, while AGROMAN and AGROCOM had more balanced relative abundance of Isopoda, Staphylinidae, and Aranea. Opiliones and Myriapoda were more affected by season, while Carabidae were poorly represented in the whole monitoring period. Despite the fact that all three production systems are in accordance with the European Union regulation on organic farming, findings of this study displayed significant differences among them and confirmed the suitability of soil arthropods as bioindicators in protected systems of organic farming.

scholarly journals Soil Arthropods in the Douro Demarcated Region Vineyards: General Characteristics and Ecosystem Services Provided

2021 ◽  
Vol 13 (14) ◽  
pp. 7837
Author(s):  
Fátima Gonçalves ◽  
Cristina Carlos ◽  
Luís Crespo ◽  
Vera Zina ◽  
Amália Oliveira ◽  
...  
Keyword(s):  
Ecosystem Services ◽  
Soil Quality ◽  
Soil Surface ◽  
Farming Systems ◽  
Wine Industry ◽  
Soil Arthropods ◽  
Arthropod Communities ◽  
Intensive Farming ◽  
Soil Arthropod ◽  
New Business

Viticulture is one of the oldest and most profitable forms of agriculture; it is also one of the most intensive farming systems. As intensive cultivation threatens the environment, there is increasing interest in the concept of sustainability within the wine industry, as well as new business opportunities, as customers begin to pay more attention to environmental and sustainability issues. Recognizing the key role of soil quality in environmentally and economically sustainable viticulture makes it essential to understand better soil arthropod communities, given their crucial functions in maintaining soil quality and health. The ‘Douro Demarcated Region’ (DDR) in northern Portugal offers good potential, in regards to biodiversity, due to its significant areas of non-crop habitats. This work aims to compile information on soil arthropod communities (both soil surface and soil-living) collected in the DDR vineyard agroecosystems. A description of the ecosystem services provided by them, as a basis for the development and implementation of sustainable viticulture systems, is also an objective of this work. An important set of soil arthropods necessary for the delivery of vital ecosystem services for viticulture, with particular reference to supporting and regulating services, occurred in this ecosystem. Eight classes were chiefly represented in a sample of about 167,000 arthropod specimens: Arachnida, Chilopoda, Diplopoda, Entognatha, Insecta, Malacostraca, Pauropoda, and Symphyla. The most representative were Entognatha and Insecta in soil-surface arthropods, and Arachnida and Entognatha in soil-living arthropods. The presence of recognized groups as bioindicators in agroecosystems, such as soil quality indicators, is also revealed. This knowledge is expected to contribute to a more efficient and sustainable management of the viticultural ecosystem.

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