Influence of grazing on the decomposition of Pinus pinea L. needles in a silvopastoral system in Doñana, Spain

Mancilla-Leytón, Juan Manuel; Sánchez-Lineros, V.; Vicente, Ángel Martín

doi:10.1007/s11104-013-1788-8

Cited by 17 publications

(7 citation statements)

References 45 publications

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“…During grazing, in addition to making a valuable contribution to the mitigation of forest fire risk (control of accumulated biofuel), large herbivores could benefit grassland through soil nutrient enrichment. Feces and urine deposition by grazing animals exerts a positive influence on soil nutrient pools and microbial communities, creating a positive feedback (plant-soil) in grazing areas, especially in N-poor sites, such as Doñana Natural Park [25]. As available pasture increased over time, facilitated by the thinning of the shrubland and the fertilizing effect of goat depositions, goats began to consume it when it was green (winter and spring) over its abundance [18].…”

Section: Discussionmentioning

confidence: 99%

Effects of Diet Selection by Goats Grazing on the Vegetation of a Protected Pine Forest in Doñana Natural Park (SW Spain)

2021

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We investigated the relationship between feeding selection by goats and changes in plant species abundance in the shrubland of a pine forest in Doñana Natural Park along three years. The abundance of the shrub species was measured using the point-intercept method. Goat preferences for shrub species were determined through direct observation. Goats showed selective feeding, since their browsing behavior was not related to species abundance. Myrtus communis was the overall preferred species (almost half of the bites belonged to this species, despite its low abundance) throughout the monitored years and seasons. Half of the species were selected some years while discarded others; two species were never grazed (Daphne gnidium and Thymus mastichina) and nine others were always ingested below their abundance. Within a year, species were consumed in certain seasons but not in others. The detected changes in species abundance were not related to the feeding preferences of the goats. The influence that grazing selectivity exerts on vegetation composition and abundance has long been recognized, but our study suggests that the mechanical effect of grazing herbivores on vegetation (pawing, scratching, and lying) may portrait a more important role than attributed to date.

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Section: Discussionmentioning

confidence: 99%

Effects of Diet Selection by Goats Grazing on the Vegetation of a Protected Pine Forest in Doñana Natural Park (SW Spain)

2021

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“…The obtained crop yields are lower than the average in the country (INE 2014 ). Soil fragmentation and nutrient enrichment through goat defecation was reported during grazing, accelerating litter decomposition and nitrogen incorporation, reducing pine needles accumulation and fi re risk (Mancilla-Leyton et al 2013 ). In the case of potatoes, our average yield reaches 31,300 kg ha −1 , equivalent to 23-30 % of the national average production.…”

Section: Introductionmentioning

confidence: 88%

Silvopastoral Systems in Southern South America

Peri¹,

Dubé²,

Varella³

2016

Advances in Agroforestry

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Agroforestry, the purposeful growing of trees and crops in interacting combinations, began to attain prominence in the late 1970s, when the international scientifi c community embraced its potentials in the tropics and recognized it as a practice in search of science. During the 1990s, the relevance of agroforestry for solving problems related to deterioration of family farms, increased soil erosion, surface and ground water pollution, and decreased biodiversity was recognized in the industrialized nations too. Thus, agroforestry is now receiving increasing attention as a sustainable landmanagement option the world over because of its ecological, economic, and social attributes. Consequently, the knowledge-base of agroforestry is being expanded at a rapid rate as illustrated by the increasing number and quality of scientifi c publications of various forms on different aspects of agroforestry.Making full and effi cient use of this upsurge in scientifi c agroforestry is both a challenge and an opportunity to the agroforestry scientifi c community. In order to help prepare themselves better for facing the challenge and seizing the opportunity, agroforestry scientists need access to synthesized information on multi-dimensional aspects of scientifi c agroforesty.The aim of this new book-series, Advances in Agroforestry, is to offer state-of-the art synthesis of research results and evaluations relating to different aspects of agroforestry. Its scope is broad enough to encompass any and all aspects of agroforestry research and development. Contributions are welcome as well as solicited from competent authors on any aspect of agroforestry. Volumes in the series will consist of reference books, subjectspecifi c monographs, peer-reviewed publications out of conferences, comprehensive evaluations of specifi c projects, and other book-length compilations of scientifi c and professional merit and relevance to the science and practice of agroforestry worldwide.More information about this series at

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“…Decomposition rate (%) = 100 -% remaining The first-order exponential equation (MANCILLA-LEYTÓN et al, 2013) was used to calculate the daily decomposition rate k (kg kg -1 day -1 ), and the decomposition constant in the study period divided by the total number of days (270 days) yielded the daily constant:…”

Section: Litter Decompositionmentioning

confidence: 99%

Decomposition of straw resulting from different strategies of recovery of degraded pastures using an integrated crop-livestock system

Zagato

Araújo

Santos-Araujo

et al. 2018

SCA

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Several strategies have been used to improve soil fertility using integrated crop-livestock (ICL) systems, and the harvest of the accompanying crop used for silage may have several benefits to the soil depending on the quantity and quality of the remaining litter, providing dry matter (DM) for no-tillage systems and nutrient mineralization for the subsequent crop. The objective of this study is to evaluate the rate of decomposition of macro-and micronutrients of the DM of litter produced in ICL systems at different harvest heights in one year. The study was developed at the Experimental Farm of UNESP in Selvíria, Mato Grosso do Sul, Brazil, in the dry season. The study included five replications in plots of 200 m 2 and was arranged in a completely randomized block design. The following treatments were analyzed: control sample-degraded pasture of signal grass; Marandu grass-pasture renewal from signal grass to Marandu grass; succession 45-planting of sorghum (forage sorghum cv. Volumax) and crop harvest at the height of 45 cm for silage followed by planting of Marandu grass; simultaneous seeding of Marandu grass and sorghum, and crop harvesting for silage at the height of 15 cm (Marandu + sorghum 15) and 45 cm (Marandu + sorghum 45) from the soil surface. After crop harvesting, proportional amounts of green mass remaining from each unit were collected, transferred to nylon bags, and placed in direct contact with the soil of the respective experimental unit. Each bag was opened every 30 days after closure for up to 270 days. In each bag, the DM, and macro-and micronutrients were analyzed, and the percentage of remaining material, daily decomposition rate, and half-life were calculated. The litter of the Marandu + sorghum 45 treatment contained the highest DM, decomposition rate, and nutrient content. The crop succession provided the best condition of the litter, with the highest DM on the soil surface, which improved soil conditions and made the soil less susceptible to degradation. ResumoTem sido frequente a adoção de estratégias que visem melhorias na fertilidade do solo em sistemas de integração lavoura-pecuária (ILP) e a altura de colheita para ensilagem da cultura acompanhante, pode direcionar diversos benefícios ao solo pela quantidade e qualidade da liteira remanescente, proporcionando massa seca (MS) para o plantio direto e mineralização de nutrientes para a cultura subsequente. Objetivou-se com esse trabalho estudar a dinâmica de decomposição, ao longo de um ano, da MS, macro e micronutrientes de liteiras oriundas de sistemas de ILP com diferentes alturas de colheita. O experimento foi desenvolvido em campo na Fazenda Experimental da UNESP em Selvíria, MS, na condição de sequeiro. O delineamento adotado foi em blocos completos casualizados, com cinco repetições em parcelas de 200 m 2 . Os tratamentos corresponderam a Testemunha -pastagem degradada de capim-decumbens; Marandu -renovação da pastagem de capim-decumbens para capimmarandu; Solteiro 45 -capim-marandu semeado em sucessão ao sorgo (Sorgo...

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Influence of grazing on the decomposition of Pinus pinea L. needles in a silvopastoral system in Doñana, Spain

Cited by 17 publications

References 45 publications

Effects of Diet Selection by Goats Grazing on the Vegetation of a Protected Pine Forest in Doñana Natural Park (SW Spain)

Effects of Diet Selection by Goats Grazing on the Vegetation of a Protected Pine Forest in Doñana Natural Park (SW Spain)

Silvopastoral Systems in Southern South America

Decomposition of straw resulting from different strategies of recovery of degraded pastures using an integrated crop-livestock system

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