Carlos Busso

Centro Cientifico-Tecnologico Bahia Blanca

Arid zones, where native rangelands are common, are essentials for millions of people livelihood. These areas support 50% of the world's livestock and are where 44% of the world's food is grown. In rangelands of Central Argentina, Pappophorum vaginatum is basically the unique, warm-season perennial grass species palatable to grazing livestock. Our...

The objectives of this study were to determine the percentage of root colonization by arbuscular mycorrhizal (AM) fungi at various levels of plant species richness and developmental morphology stages in various perennial grass, and herbaceous and woody dicots species using experimental plots during 2013 and 2014. An auger was used to obtain six rep...

Defoliation can compromise the quality and quantity of colonization by arbuscular mycorrhizal fungi (AMF), which contribute to vegetation persistence in semiarid rangelands. The effects of defoliation on total arbuscular mycorrhizal (AM) colonization percentage and on that of its structures (i.e., vesicles, arbuscules) were evaluated on three nativ...

Vegetation management practices, such as defoliation may alter the composition of plant communities and/or the fungi-forming arbuscular mycorrhiza (AMF). We determined the species identity, density, frequency and diversity of AMF spores from soil under the canopies of three native perennial grass species in rangelands of Argentina: 1) Poa ligularis...

Studies on basal soil respiration (i.e., under undisturbed conditions) are very important because they can be used as indirect indicators of the biological activity in those soils; this ecological process is recognized as the major source of carbon flux from the soil surface, and one of the crucial components of the carbon cycle in terrestrial ecos...

Two thirds of continental Argentina are arid and semiarid rangelands. These rangelands include five phytogeographic regions: (1) Puna, (2) Chaco Occidental, (3) Monte, (4) Caldenal, and (5) Patagonia. This review includes and begins with a brief overview of the climate, soil, and vegetation characteristics of each region. After that, the major caus...

Fresh water is a valuable nonrenewable resource and plays an important role in maintaining economic and social development. Considering its large population and consumption potential, water resources deficit will certainly impede basic industries a sustainable development in China in the near future. Application of sewage irrigation, to some extent...

Leaf δ13C is widely used to explain plant strategies related to resource availability in different environments. However, the coupled response of leaf δ13C to precipitation and temperature as well as the relationship between leaf δ13C and leaf traits remain unclear. The leaf δ13C and its relationship with leaf traits [leaf size (LS), leaf length (L...

Fresh water is a valuable nonrenewable resource and plays an important role of maintaining economic and social development. Sewage irrigation was taken a supplementary way to relieve water resource shortage in some areas (such as North China). With extensive implementation of sewage irrigation, serious pollution and destruction for farmland have gr...

Aims This study aimed to examine the changes in plant species richness, frequency and density along a habitat fragmentation gradient (with varied degrees of habitat fragmentation) in a desertified grassland of Horqin Sandy Land, northeastern Inner Mongolia, China. Methods In this study, six landscape plots (500 m × 500 m each) along a habitat fragm...

This edited volume is devoted to the examination of the implications of the inevitable changes wrought by global change on the welfare and livelihoods of tens of millions of people who live in arid regions. Global change is more than just climate change and the ramifications of changing trade patterns (geopolitical and economic aspects), the shift...

Total soil available nitrogen concentrations (NO –3 +) were determined underneath plants of the more-competitive Poa ligularis, mid-competitive Nassella tenuis and the less-competitive Amelichloa ambigua exposed to various combinations of controlled burning and defoliation treatments. Defoliations were at the vegetative (V), internode elongation (E...

ABSTRACT Our objectives were to (1) determine the effects of light on seed germination of 2 populations (P1, P2) of Pappophorum vaginatum, and (2) compare the germination responses between these populations. Because of this, two studies were conducted. The first study evaluated the effects of 2 light conditions (L0=darkness, and L1=14 h light) on t...

The microbiological quality of honey obtained from different processing points and the environmental quality within honey houses were assessed in the Pampas Region (Argentina). Mold and yeast (MY), culturable heterotrophic mesophilic bacteria (CHMB), the number of spore-forming bacteria as well as the presence of Shigella spp., Salmonella spp. and...

The stability of artificial, sand-binding communities has not yet fully studied. A similarity index was developed to evaluate the stability of artificial communities in shifting and semi-fixed sand dunes. This similarity index consisted of 8 indicators (i.e., vegetation cover, Shannon-Wiener Index, biomass, organic matter, Total N, available P and...

Long-term continuous cropping of cotton had led to substantial agricultural losses. However, continuous cotton cropping could maintain high crop yields for many years in some areas. The composition and structure of soil nematode communities were investigated to explore the effect of continuous cropping and soil depths on these communities. Soil sam...

The objective of this study was to analyze the relationships between total aboveground plant biomass versus altitude, latitude, longitude, mean annual temperature, mean annual precipitation, and species diversity. Simple linear regression analysis was used to study these relationships. Results showed that altitude was significantly, positively (R²=...

Phyton, International Journal of Experimental Botany vol 2013 CA Busso Editor en Jefe

Editor en Jefe de Phyton, International Journal of Experimental Botany

Phyton, International Journal of Experimental Botany is a Journal that receive manuscripts in the area of General Biology (www.revistaphyton.fund-romuloraggio.com.org.ar).

We used long-term datasets (1984-1992) to contrast precipitation- use efficiency estimates between various disturbance kinds at a functional group and/or a species scale. Effects of varying amounts of precipitation and plant cover on PUE were also examined. Field studies were conducted at northeastern, arid Patagonia, Argentina (40°39'49″S, 62°53'6...

THE FILE CONTAINS MY SHORT CURRICULUM VITAE

Species richness is one important indicator of species diversity. Different sampling intensities very likely produce different species richness values. Substantial efforts have already been made to explicitly quantify the spatial variability of soil properties in different ecosystems. However, concerns still remain on how to characterize the effect...

Poa ligularis is an important forage, perennial bunchgrass in Patagonian rangelands. We hypothesized that (1) root biomass in P. ligularis is not reduced by increased defoliation frequency, as carbon would be allocated similarly above-(for leaf and shoot regrowth) and belowground (to maintain the water uptake necessary for shoot regrowth), and (2)...

As a native tree species, Ulmus pumila var. sabulosa (sandy elm) is widely distributed in the Horqin Sandy Land, China. However, seedlings of this species have to withstand various depths of sand burial after emergence because of increasing soil degradation, which is mainly caused by overgrazing, climate change, and wind erosion. An experiment was...

Phosphorus is an essential macronutrient for all living plants and plant production. Simultaneously, atmospheric nitrogen deposition also affects plant productivity at a global scale. However, few studies have investigated how plants respond to P addition while simultaneously considering N deposition. We investigated plant biomass, nutrient status...

Artemisia wudanica is an endemic, perennial, pioneering psammophyte species in the sand dune ecosystems of western Horqin Sand Land in northern China. However, no studies have addressed how sexual and asexual reproduction modes of A. wudanica perform at the transitional zones between active dune inter-dune lowlands and active dunes. In early spring...

Artemisia wudanica is an endemic, perennial, pioneering psammophyte species in the sand dune ecosystems of western Horqin Sand Land in northern China. However, no studies have addressed how sexual and asexual reproduction modes of A. wudanica perform at the transitional zones between active dune inter-dune lowlands and active dunes. In early spring...

As a native tree species, Ulmus pumila var. sabulosa (Sandy elm) is widely distributed in Horqin Sandy Land. However, seedlings of this species have to withstand various depths of sand burial after emergence because of increasing soil degradation. So an experiment was conducted to evaluate the changes in the survivorship, morphological traits and b...

Phleum alpinum L. and Poa pratensis L. are major forage species that often grow in various environments in Tierra del Fuego, Argentina. We performed a greenhouse experiment to investigate how these species acclimate to the different irradiance of the microenvironments where they grow. Both grass species were exposed to three levels of incident irra...

Artemisia wudanica is an endemic, perennial, pioneering psammophyte species in the sand dune ecosystems of western Horqin Sand Land in northern China. However, no studies have addressed how sexual and asexual reproduction modes of A. wudanica perform at the transitional zones between active dune inter-dune lowlands and active dunes. In early spring...

We contrasted total herbaceous ANPP and cover between various disturbance types (Control, Burning, Shrub Control, Old Field 1, Old Field 2, Overgrazing) at a functional group (CSPG= cool-season perennial grasses; WSPG= warm-season perennial grasses; CSAG + D= cool-season annual grasses + dicots) and a species scale during 1984-1992. Results showed...

Aims Forest canopy openings modify the natural environment, producing changes in light quality and intensity, precipitation and temperature. In turn, these changes promote the acclimation of understory species. However, little work has been done on underground responses to those environmental changes. The objective of this work was to determine how...

We investigated the effects of seed burial depth and soil water content on seedling emergence and growth of Ulmuspumila var. sabulosa (sandy elm), an important native tree species distributed over the European-Asian steppe. Experimental sand burial depths in the soil were 0.5, 1.0, 1.5, 2.0 and 2.5 cm, and soil water contents were 4%, 8%, 12% and 1...

We contrasted total herbaceous ANPP and cover between various disturbance types (Control, Burning, Shrub Control, Old Field 1, Old Field 2, Overgrazing) at a functional group (CSPG= cool-season perennial grasses; WSPG= warm-season perennial grasses; CSAG + D= cool-season annual grasses + dicots) and a species scale during 1984-1992. Results showed...

We investigated the effects of seed burial depth and soil water content on seedling emergence and growth of Ulmus pumila var. sabulosa (sandy elm), an important native tree species distributed over the European-Asian steppe. Experimental sand burial depths in the soil were 0.5, 1.0, 1.5, 2.0 and 2.5 cm, and soil water contents were 4%, 8%, 12% and...

Grasslands are one of the most widespread landscapes worldwide, covering approximately one-fifth of the world’s land surface, where grazing is a common practice. How carbon storage responds to grazing in steppes remains poorly understood. We quantified the effects of grazing on community composition and species diversity, and carbon storage in two...

Phleum alpinum L. and Poa pratensis L. are major forage species that often grow in various environments in Tierra del Fuego, Argentina. We performed a greenhouse experiment to investigate how these species acclimate to the different irradiance of the microenvironments where they grow. Both grass species were exposed to three levels of incident irra...

Cardillo, Daniela S.; Carlos A. Busso; Mariela Ambrosino; Yanina Torres; Leticia Ithurrart; Oscar Montenegro. 2015. “Grasses (Poaceae) of the District of Coronel Rosales (Province of Buenos Aires, Argentina)”. Lilloa 52 (2). Grasses (i.e., Poaceae) are one of the more numerous, described families with more than 670 genera and about 11,000 species....

Mongolian pine (Pinus sylvestris L.) is an important tree afforestation species in China. Plants of this species have died on large areas since the early 1990's. Although this decline has been largely attributed to drought stress, how the water balance (i.e., precipitation - stand transpiration) might limit the survival of Mongolian pines has not b...

This is a book on the ecology, growth and environmental influences on higer plants from seed germination to young plants.

El fuego es un componente importante del régimen de perturbaciones naturales, que junto con las precipitaciones, da forma a las comunidades vegetales de la Provincia Fitogeográfica del Monte. Poa ligularis y Amelichloa ambigua son dos especies de gramíneas perennes nativas otoño-inverno-primaverales, de distinta palatabilidad, abundantes en los pas...

Mongolian pine (Pinus sylvestris L.) is an important tree afforestation species in China. Plants of this species have died on large areas since the early 1990's. Although this decline has been largely attributed to drought stress, how the water balance (i.e., precipitation – stand transpiration) might limit the survival of Mongolian pines has not b...

Mongolian pine (Pinus sylvestris L.) is an important tree afforestation species in China. Plants of this species have died on large areas since the early 1990's. Although this decline has been largely attributed to drought stress, how the water balance (i.e., precipitation – stand transpiration) might limit the survival of Mongolian pines has not b...

Naturally occurring salt tolerant and halophytic plants (trees, shrubs, grasses and forbs) have always been utilized by livestock as a supplement or drought reserve. Salt tolerant forage and fodder crops are now being planted over wide areas. Increasingly, large-scale production of fodder on formerly abandoned irrigated cropland has allowed salt to...

The 2,3,5-triphenyltetrazolium chloride (TTC) technique has been used during decades to distinguish between dead and alive tissues of perennial grasses. This technique did not consider, however, that dormant (i.e., viable) tissues could exist within those erroneously considered dead tissues, thus being unable to report the true physiological stage...

The 2,3,5-triphenyltetrazolium chloride (TTC) technique has been used during decades to distinguish between dead and alive tissues of perennial grasses. This technique did not consider, however, that dormant (i.e., viable) tissues could exist within those erroneously considered dead tissues, thus being unable to report the true physiological stage...

Since the contribution of total belowground bud bank and different bud types to community regeneration has rarely been explored, the vegetative offspring recruited from different belowground bud types was investigated in four plant communities along a grassland degradation gradient in northeastern China (Inner Mongolia). This gradient, between 1000...

In this study, we determined carbon allocation and carbon stocks in the plant-soil system of different dune ecosystems in northeastern China. We quantified the species composition, above- and below-ground biomasses, and carbon stocks of three dune types (i.e. active dunes, semi-stabilized dunes and stabilized dunes) and their corresponding inter-du...

This chapter is a broad overview of halophytic and salt tolerant feedstuffs (mainly forages from the extensive rangelands including alpine and semi desert areas) that support the pastoral livestock enterprise. Attention is focused on the productivity (as refl ected in edible biomass and seasonal availability) and nutritive value of the various fora...

Se evaluó variabilidad y correlación fenotípica en caracteres vinculados con el vigor de plántula en dos poblaciones de P. vaginatum. Se pesaron y sembraron individualmente 100 cariopses por población ("A"; "B"). A los 43 días se determinó: longitud aérea (LA), radical (LR), total (LT) y de raíz adventicia más larga (Ladv); número de raíces adventi...

Se evaluó el comportamiento de la germinación de cuatro poblaciones diferentes de Pappophorum vaginatum, gramínea nativa de la región del Monte, bajo dos formas de almacenamiento de la semilla.

Se estudió la variabilidad y correlaciones de caracteres asociados al vigor de plántula en dos poblaciones de Pappophorum vaginatum, especie nativa de la región del Monte. Su palatabilidad la hace decreciente debido al sobrepastoreo. La reincorporación de la especie en su ambiente tiene el objetivo de aumentar la productividad, aumentar y mantener...

Despite the predominant role of bud banks in population regeneration and community dynamics, they have received far less attention than deserved. In particular, it remains unexplored how bud bank size and composition respond to different grazing intensities in grasslands. We investigated the size and composition of bud banks under different grazing...