Responses of plant functional groups in grazed and abandoned areas of a Natural Protected Area

Asensio, Luis Alberto Bermejo; Nascimento, Lea de; Mata, J.; Fernández-Lugo, S.; Camacho, A.; Arévalo, José Ramón

doi:10.1016/j.baae.2012.05.004

Cited by 15 publications

(11 citation statements)

References 27 publications

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“…Grazing can stimulate growth of some grazing‐tolerant plant species and contribute to changes in species diversity, and productivity (Augustine & McNaughton, ; Frank, Wardle, Dickman, & Greenville, ). This result supported the concept that grazing had a significant effect on the contribution of some functional groups shaping the structure of vegetation (Bermejo et al, ).…”

Section: Discussionsupporting

confidence: 88%

The impact of grazing on seedling patterns in degraded sparse‐elm grassland

et al. 2018

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Over‐grazing by livestock in semiarid ecosystems is one of the main causes of desertification. Although over‐grazing contributes to global environmental challenge, only a few studies have investigated grazing impacts on the composition of species and functional groups of seedling bank. In this study, we determined whether the composition of seedling species and functional groups, as well as the correlations between the seedlings of sparse‐elm (Ulmus pumila var. sabulosa or U. pumila) and other species changed under three grazing intensities in the degraded sparse‐elm grassland in the Horqin Sandy Land, China. Species composition and abundance of established seedlings were surveyed and the relationships between seedlings of U. pumila and other species were analyzed. The results showed that plant communities under moderate grazing were more stable than the other two grazing intensities due to higher seedling density, higher species richness, and higher number of perennial herbs. Seedlings of U. pumila could even prevent noxious seedlings growth under moderate grazing. We concluded that moderate grazing could benefit the recovery of this sparse‐elm grassland in the Horqin Sandy Land.

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Section: Discussionsupporting

confidence: 88%

The impact of grazing on seedling patterns in degraded sparse‐elm grassland

et al. 2018

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“…In contrast to the high proportion of total biomass of forbs under extensification, more forbs were allocated to the upper layer in undefoliated plots and there was lower forb biomass under both the intensively grazed treatments (ICG > IG). This can be attributed to more grazing‐tolerant species occurring within the forbs group and appearing frequently in the grazed areas (Bermejo et al, 2012). This different response by forbs as a functional group may possibly be explained by the heterogeneous features and wide range of morphological traits of the group, thereby enabling species within the group to respond to the various disturbances or conditions (Bermejo et al, 2012).…”

Section: Discussionmentioning

confidence: 99%

Effect of 15‐year sward management on vertical distribution of plant functional groups in a semi‐natural perennial grassland of central Europe

Kassahun

Pavlů

et al. 2021

Applied Vegetation Science

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Aims: The nutrient concentration in herbage and biomass productivity analyses are dependent on the vertical distribution of different sward layers where the sampling is done. Notably, a majority of studies indicate clipping biomass to the ground level without any consideration of the vertical distribution. This study examined the effect of cutting and grazing intensities on the vertical distribution of plant functional groups. Location: Oldřichov Grazing Experiment, northern Czechia. Methods: During a 15-year experiment: (a) intensive and (b) extensive grazing without cutting; (c) cutting in June followed by intensive and (d) extensive grazing; and (e) undefoliated treatment were applied throughout the vegetation season. Biomass data were collected at two layers in the sward (below and above 3 cm) and separated into five functional groups. Biomass data were analysed to examine the succession and effects of treatments on vertical distribution of functional groups. Results: Treatment effects were differentiated after 2-3 years from the introduction of management, but the composition of functional groups fluctuated over time. Treatments significantly affected total biomass of all functional groups and the vertical distribution within swards of most groups. Particularly intensive grazing significantly decreased the total biomass of graminoids, forbs, and dead biomass in favour of legumes (which increased). This led to a shift in the relative biomass distribution from the upper sward layer to the lower layer for most functional groups except for legumes and mosses. Conclusion: The high proportion of dead biomass in the lower sward layer suggests the need for a methodological approach that considers clipping of biomass only above 3 cm when sampling for productivity and forage quality analysis. This approach would avoid including biomass from below 3 cm or the lower layer, which would be ungrazed by cattle. Many previous studies may have reported a distorted or inflated value in herbage productivity or forage quality results.

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“…De igual forma, la riqueza de especies vegetales fue mayor en los sitios cercados (19 y 14 especies) y menor en el pastoreado (10 especies), lo cual corresponde con lo reportado por Arévalo et al (2007), Bermejo et al (2012) y Mancilla-Leytón et al (2013). Particularmente, D. phillipsii fue la especie favorecida por el pastoreo debido a que esta especie prefiere hábitats con pastos cortos (Jones y Genoways, 1975, Riojas-López, 2012.…”

Section: Discussionunclassified

Efecto del pastoreo sobre una comunidad de roedores nocturnos en pastizales del Valle de Perote, Veracruz

Durán-Antonio

González‐Romero

2018

Rev.Mex.Biodiv.

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Resumen La ganadería a escala global ocupa la mayor extensión de área, favoreciendo la pérdida de hábitat, así como cambios en la abundancia y composición de la biota nativa. El objetivo del estudio fue determinar los efectos del pastoreo sobre la abundancia, estructura poblacional, masa corporal y hábitat de roedores en el Valle de Perote. El estudio se realizó en 2 sitios con diferente tiempo sin pastoreo (5 y 15 años) y uno con pastoreo cotidiano. Mensualmente se muestrearon 2 cuadros de 1 ha por sitio, utilizando 36 trampas Sherman, además se hizo un muestreo de la vegetación, para caracterizar el hábitat. Los resultados mostraron que la riqueza de roedores no fue sensible a los efectos del pastoreo, mientras que la riqueza de plantas fue mayor en sitios sin pastoreo. La altura de las plantas fue significativamente menor en presencia de ganado, mientras que la cobertura vegetal se mantuvo relativamente constante entre los sitios. La abundancia de roedores fue menor en presencia de pastoreo. El peso de los roedores no varió significativamente entre sitios. A su vez el pastoreo modificó la proporción de sexos favoreciendo a las hembras, lo que puede ser resultado de estrategias reproductivas ante las condiciones adversas del pastoreo.

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Responses of plant functional groups in grazed and abandoned areas of a Natural Protected Area

Cited by 15 publications

References 27 publications

The impact of grazing on seedling patterns in degraded sparse‐elm grassland

The impact of grazing on seedling patterns in degraded sparse‐elm grassland

Effect of 15‐year sward management on vertical distribution of plant functional groups in a semi‐natural perennial grassland of central Europe

Efecto del pastoreo sobre una comunidad de roedores nocturnos en pastizales del Valle de Perote, Veracruz

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