Stability and instability on Maya Lowlands tropical hillslope soils

Beach, Timothy; Luzzadder–Beach, Sheryl; Cook, Duncan; Krause, Samantha; Doyle, Colin; Eshleman, Sara; Wells, Greta; Dunning, Nicholas P.; Brennan, Michael L.; Brokaw, Nicholas; Cortes-Rincon, Marisol; Hammond, Gail; Terry, Richard E.; Trein, Debora; Ward, Sheila

doi:10.1016/j.geomorph.2017.07.027

Cited by 41 publications

(37 citation statements)

References 54 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Intensive land cultivation through manual tillage (formation of rows for burning slashed material, sowing and harvesting twice per year) incorporates silt and clay from lower soil horizons to the topsoil of Ultisols (Bhaskar et al, ). Regular enrichment with fine particles also homogenises the topsoil within terraces and across the deforested catchment and masks the effects of selective erosion, in contrast to many agricultural areas where preferentially transported clay and silt particles by overland flow on slopes coarsen topsoil grain‐size composition (Beach, Luzzadder‐Beach, et al, ; Parsons, Abrahams, & Luk, ; Poesen, ; Sutherland, Wan, Ziegler, Lee, & El‐Swaify, ).…”

Section: Discussionmentioning

confidence: 99%

“…Replacement of native vegetation by crops, surface mining, and settlement can, intentionally and unintentionally, change the natural geomorphological and hydrological processes, frequently resulting in land degradation (Styger, Rakotondramasy, Pfeffer, Fernandes, & Bates, ; Tarolli & Sofia, ; Turkelboom, Poesen, & Trébuil, ; Valentin et al, ; Vanacker, Govers, Barros, Poesen, & Deckers, ). These human–landscape interactions leave imprints on the natural landscape in the form of new landforms and modification of natural ones (Goudie, ; Latocha, ; Mueller, Joyce, Borejsza, & Goman, ; Smith, Paron, & Griffiths, ; Szabó, Dávid, & Lóczy, ; Tarolli & Sofia, ) as well as changes in the sediment grain‐size composition and spatial variability (Beach, Luzzadder‐Beach, et al, ; Beach, Ulmer, et al, ; Hooke, ; Syvitski, Vörösmarty, Kettner, & Green, ).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Geomorphological and sedimentological indicators of land degradation (Meghalaya Plateau, NE India)

2018

View full text Add to dashboard Cite

Replacement of forests by cultivation in hilly regions can dramatically increase overland flow and soil erosion, frequently resulting in land degradation. This study aimed to determine the impact of long‐term human activity and natural geomorphic processes in land degradation of 2 catchments located in the Meghalaya Plateau in northeast India. Both catchments are built by deeply weathered granites with hilly topography but have contrasting land uses. Forested catchment (1.5 ha) is covered by natural deciduous forest, whereas deforested catchment (3.5 ha) is affected by slash and burn cultivation and boulder extraction. Detailed geomorphological mapping and sediment pattern analysis revealed a complex anthropogenic role in land degradation. Human activity contributes directly to the creation of new landforms in the deforested catchment and indirectly by influencing the course and intensity of geomorphological processes, masking the pre‐existing natural relief. Discontinuous agricultural terraces, zero‐order valleys, and furrows created coexisting cascade system and direct connectivity of water and sediment transport within the same slope. Higher content of fine‐grained material and lower content of boulders in the deforested catchment reflect overlapping of 2 traditional occupations of the local population: agriculture and selective boulders extraction, respectively. Human activity combined with accelerated erosion of abundant weathered material led to the transformation of incised valley bottom into flat accumulation plain as well as the extension and aggradation of the alluvial fan. This process increased the proportion of flat landforms favourable for cultivating the deforested catchment under growing population pressure.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Geomorphological and sedimentological indicators of land degradation (Meghalaya Plateau, NE India)

2018

View full text Add to dashboard Cite

show abstract

“…Proactive contribution to soil formation processes would require a more intensive engagement with the soil resource than is typically observed today (Dunning and Beach, 2003). Soil studies of Maya urban centres have revealed complex soil histories replete with episodes of both destructive and constructive soil 33 management practices (Beach et al, 2006;Beach et al, 2018;Dunning and Beach, 2000;2010;Dunning et al, 2019).…”

Section: Contributing To Soilsmentioning

confidence: 99%

“…At the sprawling agro-urban landscape of Tikal, very few terraces were constructed, but several paleoenvironmental proxies suggest that a combination of permanent gardens, orchards, and managed forests were used to protect sloping land in the Classic period city after severe Preclassic erosion (Lentz et al, 2014;Dunning et al, 2015). However, a number of catenas in northwestern Belize indicate that Preclassic erosion stripped slopes of soil cover, reducing the stock of soils, which diminished sedimentation and prevented terrace investment in the Classic (Beach et al, 2018). In the more northerly lowland areas, soil cover on steep slopes was likely skeletal to begin with.…”

Section: Caring For Soilsmentioning

confidence: 99%

Buried solutions: How Maya urban life substantiates soil connectivity

et al. 2021

View full text Add to dashboard Cite

“…La escasa distancia que separa dichas unidades del paisaje posibilita la dispersión de semillas desde los bajos hacia los lomeríos circundantes y viceversa; en consecuencia, brinda la posibilidad de que las especies se establezcan en el hábitat vecino o que su establecimiento pueda ser limitado por la acción de un filtro ambiental. Por tal motivo, elegimos Brosimum alicastrum y Psidium sartorianum por encontrarse en ambientes con condiciones edáficas y topográficas contrastantes (Beach et al, 2006(Beach et al, , 2008(Beach et al, , 2018.…”

Section: Selección Y Características De Las Especiesunclassified

La supervivencia y desarrollo de plántulas de Brosimum alicastrum (Moraceae) y Psidium sartorianum (Myrtaceae) difieren en condiciones de inundación

et al. 2020

View full text Add to dashboard Cite

Resumen:Antecedentes y Objetivos: En los bosques tropicales la inundación estacional puede actuar como filtro ambiental afectando la supervivencia, el establecimiento y el crecimiento de las plántulas de especies arbóreas e influir en la estructura de las comunidades. Se simularon condiciones de inundación y sequía con el objetivo de evaluar su efecto como filtro ambiental sobre la supervivencia, crecimiento (longitud del tallo y número de hojas) y biomasa acumulada en plántulas de Brosimum alicastrum y Psidium sartorianum de la selva de Campeche, México.Métodos: Se estableció un experimento en condiciones de vivero con un diseño completamente al azar, con tres tratamientos (sequía, riego regular e inundación).Para cada tratamiento se utilizaron 45 plántulas de cada especie. Se evaluaron la supervivencia, altura y número de hojas de las plántulas al inicio del experimento y a intervalos de 30 días hasta su conclusión a los 120 días. Al finalizar, se cosecharon las plántulas y se midió la longitud de las raíces y la biomasa acumulada.Resultados clave: La inundación disminuyó la supervivencia de plántulas de B. alicastrum y no la de P. sartorianum, limitó la longitud del tallo, el número de hojas y la biomasa acumulada de ambas especies, pero no la biomasa de raíces de P. sartorianum. La supervivencia de las plántulas expuestas a sequía y riego regular no cambió y aumentó el crecimiento y biomasa acumulada.Conclusiones: Las respuestas de las especies contribuyeron a entender el papel del filtro ambiental en el establecimiento de las plántulas de especies arbóreas en los bajos de Calakmul, Campeche. La inundación estacional actúa como un filtro ambiental, elimina las plántulas de B. alicastrum en los bajos, mientras que esta especie predomina en áreas con suelos bien drenados como los lomeríos adyacentes a la zona inundada. Psidium sartorianum se adaptó a las condiciones de sequía e inundación, como se observa en su hábitat natural.

show abstract

Stability and instability on Maya Lowlands tropical hillslope soils

Cited by 41 publications

References 54 publications

Geomorphological and sedimentological indicators of land degradation (Meghalaya Plateau, NE India)

Geomorphological and sedimentological indicators of land degradation (Meghalaya Plateau, NE India)

Buried solutions: How Maya urban life substantiates soil connectivity

La supervivencia y desarrollo de plántulas de Brosimum alicastrum (Moraceae) y Psidium sartorianum (Myrtaceae) difieren en condiciones de inundación

Contact Info

Product

Resources

About