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Agri-Environmental Value of Semi-Natural Grasslands: Degradation, Proper Management, and Restoration
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Agri-Environmental Value of Semi-Natural Grasslands: Degradation, Proper Management, and Restoration

A special issue of Agriculture (ISSN 2077-0472). This special issue belongs to the section "Ecosystem, Environment and Climate Change in Agriculture".

Deadline for manuscript submissions: closed (20 October 2021) | Viewed by 11573

Special Issue Editor

Dr. Michele Scotton

E-Mail Website
Guest Editor
Department of Agronomy, Università degli Studi di Padova, Padua, Italy
Interests: grassland management; grasland ecology; grassland restoration; plant reproduction

Special Issue Information

Dear Colleagues,

Despite their ancient origin, species-rich semi-natural grasslands still excel among agricultural ecosystems for their multifunctionality, including important agricultural benefits (high-quality forages, niche food products, agro-tourism, etc.) and environmental services (biodiversity, hydrological cycle, carbon sequestration, etc.).

Unfortunately, their extent and quality has been alarmingly reduced in recent decades. Highlighting the causes and losses from grassland degradation in addition to the benefits from proper management of high-quality grassland is therefore crucial for justifying policies aimed at supporting their conservation.

Ecological restoration has also become an important tool for maintaining grassland multifunctionality. Reintroducing species-rich grasslands can increase the environmental value of both agricultural areas (e.g., in livestock farming, field margins, herbaceous–woody cropping systems) and extra-agricultural environments (e.g., in urban parks, green roofs, road embankments, riverbanks, ski slopes).

Dr. Michele Scotton
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Agriculture is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • species-rich semi-natural grasslands
  • semi-natural grassland degradation
  • semi-natural grassland management
  • semi-natural grassland conservation and restoration
  • grassland biodiversity in agricultural, urban, and extra-urban environments

Published Papers (5 papers)

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Research

14 pages, 2490 KiB  
Article
Short-Term Abandonment versus Mowing in a Mediterranean-Temperate Meadow: Effects on Floristic Composition, Plant Functionality, and Soil Properties—A Case Study
by Francesca Vannucchi, Valerio Lazzeri, Irene Rosellini, Manuele Scatena, Claudia Caudai and Francesca Bretzel
Agriculture 2022, 12(1), 78; https://0-doi-org.brum.beds.ac.uk/10.3390/agriculture12010078 - 07 Jan 2022
Cited by 2 | Viewed by 1541
Abstract
Hay meadows are secondary grasslands maintained by mowing, and their ecological importance resides in the inherent biodiversity and carbon stocking. We investigated the plant community and soil properties of a sub humid acid grassland near the Fucecchio marshes (Italy), managed as a hay [...] Read more.
Hay meadows are secondary grasslands maintained by mowing, and their ecological importance resides in the inherent biodiversity and carbon stocking. We investigated the plant community and soil properties of a sub humid acid grassland near the Fucecchio marshes (Italy), managed as a hay meadow, mowed once a year, and not fertilized. Part of the meadow had been abandoned for three years. We analysed the soil properties (i.e., organic carbon and total nitrogen content, available phosphorus, pH, cation-exchange capacity, texture, and conductibility) and the plant community structure (composition, functionality, and species richness) of the two sides of the meadow (mowed and abandoned). Our aim was to highlight the changes in soil properties and vegetation community, and to find out to what extent abandonment can affect those dynamics. Our results showed that after short-term abandonment, soil pH, C and N increased; litter biomass and perennial forbs increased; and annual forbs decreased. New species colonising after abandonment, thus enriching the flora, may keep spreading and eventually hinder the growth of the specialists if mowing is not resumed. Certain valuable meadow habitats need constant human intervention to maintain their peculiar vegetation, most especially if they are a buffer zone in the proximity of natural protected areas. Full article
(This article belongs to the Special Issue Agri-Environmental Value of Semi-Natural Grasslands: Degradation, Proper Management, and Restoration)
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25 pages, 4923 KiB  
Article
Floristic Composition: Dynamic Biodiversity Indicator of Tree Canopy Effect on Dryland and Improved Mediterranean Pastures
by João Serrano, Shakib Shahidian, Eliana Machado, Luís L. Paniagua, Emanuel Carreira, Francisco Moral, Alfredo Pereira and Mário de Carvalho
Agriculture 2021, 11(11), 1128; https://0-doi-org.brum.beds.ac.uk/10.3390/agriculture11111128 - 11 Nov 2021
Cited by 8 | Viewed by 2048
Abstract
Montado is a characteristic ecosystem of the Mediterranean region. The adequate management of this silvo-pastoral ecosystem requires good understanding of the effect of factors such as tree canopy, fertilization and soil amendment on pasture growth. The main objectives of this work were: (1) [...] Read more.
Montado is a characteristic ecosystem of the Mediterranean region. The adequate management of this silvo-pastoral ecosystem requires good understanding of the effect of factors such as tree canopy, fertilization and soil amendment on pasture growth. The main objectives of this work were: (1) to evaluate the effect of tree canopy on soil characteristics and pasture productivity and quality; and (2) to test floristic composition assessment as a bio-indicator of soil improvements (amendment and fertilization) in each study area (under and outside tree canopy). Topsoil was characterized at the beginning of the project (October 2015) and at the end of the experiments (spring 2020). Soil parameters obtained by electronic sensors (soil moisture content, soil cone index and surface temperature) were monitored monthly during the 2017/2018 pasture vegetative cycle. Pasture productivity, quality and floristic composition were evaluated every two years (2016, 2018 and 2020) in the spring flowering period. The results of the floristic inventory were submitted to a multilevel pattern analysis (Indicator Species Analysis, ISA). Pasture biodiversity was evaluated based on the calculation of richness indices. This study showed a positive effect of tree canopy on soil fertility and pasture quality (e.g., CP). Pasture productivity, on the other hand, was higher in areas outside tree canopy. The great potential of ISA as a tool for identification of bio-indicator species was also demonstrated. Pasture species were identified as ecological and dynamic attributes characteristic of each study area, before and after soil amendment and fertilization. Full article
(This article belongs to the Special Issue Agri-Environmental Value of Semi-Natural Grasslands: Degradation, Proper Management, and Restoration)
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15 pages, 2542 KiB  
Article
Restoration of Rangelands Invaded by Amelichloa clandestina (Hack.) Arriaga & Barkworth after 12 Years of Agriculture Abandonment (Coahuila, Mexico)
by José R. Arévalo, Juan A. Encina-Domínguez, Sait Juanes-Márquez, Perpetuo Álvarez-Vázquez, Juan A. Nuñez-Colima and Miguel Mellado
Agriculture 2021, 11(9), 886; https://0-doi-org.brum.beds.ac.uk/10.3390/agriculture11090886 - 15 Sep 2021
Viewed by 2372
Abstract
Abandonment of agricultural land is currently one of the main land use changes in developed countries. This change has an impact at the economic level and from the point of view of conservation. Therefore, recovering these areas after abandonment is, in many cases, [...] Read more.
Abandonment of agricultural land is currently one of the main land use changes in developed countries. This change has an impact at the economic level and from the point of view of conservation. Therefore, recovering these areas after abandonment is, in many cases, necessary for ecological restoration, especially as they can be invaded by exotic or dominant species, preventing recovery of the original plant species community. The objective of this study is to examine changes in plant species richness and composition after the application of different treatments to eliminate Amelichloa clandestina, a species that dominates pastures abandoned 12 years ago in an area located in northern Mexico. The area is a semi-desert grassland dominated by buffalo grass Bouteloua dactyloides. We used different eradication techniques such as burning, herbicides, and clipping. Although the treatments had significant effects on species richness and composition and resulted in a relative reduction of the target species, the abundance of Amelichloa clandestina was still substantial. Burning is effective, favoring the increase of species richness and provoking a lower presence of A. clandestine but with a dominance of annuals. The most important impact on the total cover of A. clandestina is shown by the herbicide treatment. However, monitoring of these areas will still be required to consider the long-term impact and success of treatments. Full article
(This article belongs to the Special Issue Agri-Environmental Value of Semi-Natural Grasslands: Degradation, Proper Management, and Restoration)
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17 pages, 1599 KiB  
Article
Grassland Restoration at a Graded Ski Slope: Effects of Propagation Material and Fertilisation on Plant Cover and Vegetation
by Michele Scotton
Agriculture 2021, 11(5), 381; https://0-doi-org.brum.beds.ac.uk/10.3390/agriculture11050381 - 23 Apr 2021
Cited by 6 | Viewed by 2101
Abstract
The increasing anthropisation of mountain regions is a cause of soil degradation, which needs to be addressed. Conventional methods of ski slope revegetation often fail to stabilise the soil and recover natural vegetation. To test alternative methods to create a persistent, biodiversity-friendly plant [...] Read more.
The increasing anthropisation of mountain regions is a cause of soil degradation, which needs to be addressed. Conventional methods of ski slope revegetation often fail to stabilise the soil and recover natural vegetation. To test alternative methods to create a persistent, biodiversity-friendly plant cover, different sowing (site-adapted native propagation materials vs. forage cultivars vs. no sowing) and fertilisation treatments were compared over nine years at a graded ski slope. Because of the gravelly soil, the ninth-year plant cover was only 65%, which was sufficient to prevent erosion. All native propagation materials were equally efficient at recreating a semi-natural grassland. Except for Festuca rubra, the forage cultivars did not persist. However, native volunteer species from close natural ecosystems efficiently colonised plots sown with forage cultivars and plots that were not sown. This resulted in a lower plant cover but a high similarity to the surrounding vegetation. Fertilisation had a positive but transient effect on plant cover and a little negative effect on species richness. High-altitude sites with gravelly soils should be revegetated with native propagation materials. Using forage cultivars can attain a persistent plant cover only if the sown non-persistent cultivars are replaced by the species arriving from nearby surrounding vegetation. Full article
(This article belongs to the Special Issue Agri-Environmental Value of Semi-Natural Grasslands: Degradation, Proper Management, and Restoration)
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21 pages, 4079 KiB  
Article
The Dessau Grassland Experiment—Impact of Fertilization on Forage Quality and Species Assembly in a Species-Rich Alluvial Meadow
by Sandra Dullau, Knut Rydgren, Anita Kirmer, Urs Georg Jäger, Maren Helen Meyer and Sabine Tischew
Agriculture 2021, 11(4), 339; https://0-doi-org.brum.beds.ac.uk/10.3390/agriculture11040339 - 09 Apr 2021
Cited by 5 | Viewed by 2635
Abstract
Since alluvial meadows of river valleys of the Cnidion dubii are protected by the EU Habitats Directive, reconciling farmers’ demands for forage quality with the objective of maintaining them in good conservation status is an important issue in grassland research. In a long-term [...] Read more.
Since alluvial meadows of river valleys of the Cnidion dubii are protected by the EU Habitats Directive, reconciling farmers’ demands for forage quality with the objective of maintaining them in good conservation status is an important issue in grassland research. In a long-term experiment from 2010 to 2018, we investigated the impact of fertilizing on forage quality and species assembly on a species-rich and twice-mown alluvial grassland in the Dessau Elbe floodplain (Germany). The experiment was composed of an unfertilized control, PK, N60, N60PK and N120PK applications. A significant improvement in forage quality was achieved by nitrogen fertilization only for crude protein, with higher feeding requirements for sheep met only in individual years. The legume cycle was inhibited by the application of nitrogen and high grass cover was maintained, but not increased, at the highest nitrogen application after an exceptional summer flood. The target forbs persisted in numbers over the study period in all treatments. For cover, the low-competitive target forbs responded neutrally to nitrogen fertilization, whereas detrimental effects were demonstrated for the competitive ones. Thus, we recommend not applying more than 60 kg year−1 of nitrogen and only in combination with phosphorus and potassium. Full article
(This article belongs to the Special Issue Agri-Environmental Value of Semi-Natural Grasslands: Degradation, Proper Management, and Restoration)
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