Más allá del tema del embellecimiento, los Humedales de Ventanilla son Además albergan a importantes especies de fauna silvestre y comunidades vegetales. También actúan como gran regulador de las. Flora: Totora Gramal Carrizo. Ventanilla is one of six districts that make up the Constitutional Province of Callao . archaeological areas wait to be explored and the “Humedales de Ventanilla”, an area consisting of natural lagoons and an amazing flora and fauna, waits for. Los Humedales De Ventanilla – P.P.S. likes. Cuidando ” LOS ‘Los Humedales de gran ecosistema que alberga una gran fauna y flora.
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Little is known concerning their impact on vegetation and the recovery strategies adopted by that vegetation in response to such events.
The goal of this study is to provide information regarding changes in vegetation cover, density, growth and plant species diversity during the first days after a fire that occurred at the Ventanilla Wetlands Regional Conservation Area RCA.
In order humddales evaluate ventaniilla area, 51 plots, each measuring yy 2were established. In these, the following information was recorded: Schoenoplectus americanus bulrush was the fastest to recover, followed by Distichlis spicata-Sporobolus virginicus saltgrass.
The only stems found to have survived the fire were those of S. Sarcocornia neeiTypha domingensis and Bolboeschoenus maritimus appeared after the event. Throughout the period of the study, the only species to flower was S. The Shannon Wiener and Simpson index values show that alpha diversity seems to have reached its highest value in the evaluated time and begins to decrease.
Two important post-fire stages were identified for S. Fires, succession, regeneration, resilience, wetlands. Se identificaron dos estadios importantes posteriores al incendio para S.
The burning of vegetation is a widespread practice in the tropics, where it is mainly humsdales as part of agricultural activities. Globally and compared to terrestrial ecosystems, wetlands are ventanillz studied in relation the effects of fire and functioning of these environments Smith et al.
In these ecosystems the effects of fire are complex and depend on certain characteristics such as size, severity and frequency of burning, related to internal factors such as hydrology and geomorphology of the wetland Bixby et al. In some cases, anthropogenic burning is used to control bulrush Schoenoplectus americanus humedaes, enabling the plant, according to those who dauna this fiber, to grow in a way that keeps the tissue free of pests Aponte et al.
In the case of the coastal wetlands of Peru, little is known about the effect of fire on these ecosystems. Studying the natural post-fire regeneration of these environments hhumedales us to gain some insight into the ability of these ecosystems to recover from such impact.
The goal of this study is to offer a detailed report on changes in the cover, density, growth and diversity of species during the first days after a fire occurred in the Ventanilla Wetlands Regional Conservation Area RCA. The fire took place in the eastern sector of the wetlands on March 28th Figura 1b.
The typical plant communities of the area are: Because of this anthropogenic disturbance, an area of 0. The most abundant species, and the species most affected by the fire, were Schoenoplectus americanus bulrushVentanilpa domingensis Southern cattailBolboschoenus maritimus, Sporobolus virginicus and Distichlis spicata saltgrassall of which formed part of the grasslands and reed beds.
The soil of the reed beds consisted mostly of the decomposing stems of the species themselves S. With the goal to determine the burn severity following Keeley, in the affected wetland area, we follow the study of Salvia et al. These classes are characterized by a remnant vegetation cover and a loss of matter organic. There were nine evaluations on days 3, 17, 31, 45, 59, 73, 87, and after the fire.
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The sampling in the affected zone was carried out using 51 plots, each of which measured 1m 2distributed humedwles the length of four transects covering the affected area and all the affected plant communities.
The fire damage was similar in all plots evaluated high severity. These were arranged in a stratified design, allowing evaluation of the entire reed faunw and grassland areas; the distance between the plots was 5 meters except plot 11, which was placed fahna 10 meters from other plots, on a reed bed equally affected, just to cover the affected area, see Figura 1b for plot distribution. It was measured in each plot: Because of the difficulty in differentiating between Sporobolus virginicus and Distichlis spicata in the form of regrowth, these species were both treated as saltgrass.
The post-fire recovery of each species was quantified in two ways: Graphs were produced for both variables, which were transformed logarithmically to better appreciate the details concerning less abundant or shorter species.
In order to analyze the length reached by the stems of each species throughout the entire evaluation period, box plots were produced using PAST 2.
This calculation was done with PAST software using the values for the numbers of stems per species in each evaluation. In order to understand the diversity tendency over time, regressions were performed using the Curve finder tool all model families except polynomial in Curve Expert program Hyams, ; the best fit was chosen considering the smaller standard error se and highest correlation coefficient r.
From the vegetation cover of the different plots, maps were built up in order to observe the recovery process over time.
humedales de ventanilla flora y fauna pdf – PDF Files
This process was carried out using Q. The number of stems and the Humeedales over time are shown in Figura 2. Schoenoplectus americanus bulrush was the species which recovered most rapidly during the evaluation period. The length of the stems for all species, except for Typha domingensisincreased progressively over the evaluation period Figura 3. Temporal analysis allow us to show that in the fastest growing species S.
The average length after days was Of all species affected by the fire, only some of the S.
On days 3, 17 and 31, a total of 19, and surviving bulrush stems were counted; from day 45, this amount was progressively reduced Figura 4. From this moment, productivity was maintained with the new shoots generated by rhizomes asexual reproductionthe majority of which belonged to S. Throughout the study, the only species to flower was S. The number of stems in flower continued to increase, although the proportion of hunedales relative to the total number of stems continued to decline.
By dayof the stems were flowering Cover values were highest in the zone where S. In both cases, diversity seems to have reached its highest value. The results show rapid recovery of vegetation cover after the fire, particularly in the case of S.
The principal means of reproduction observed in this species were asexual, through rhizomes. Therefore, the production ventqnilla clones from bud growth is the main tool for the ventanjlla of the cover after fires. This characteristic allows us to suggest that vegetation dominated by S. This characteristic of the vegetation is what gives the Ventanilla wetlands the ability to respond to these events, despite being considered a fragile ecosystem Moya et al.
This also h the similarities seen in the recovery of this type of ecosystem and forest ecosystems, where recovery through asexual reproduction plays a key role in the early stages of post fire recovery Hoffmann, ; Kennard et al. We can see, therefore, that bulrush is a species that recovers quickly over a short period approximately 5 months after fires.
The fact that a considerable number of surviving stems were found could be related to the degree of fire intensity, but it fauha reveals the potential for this species to remain functional despite being affected.
This ability to recover may also be related to the type of substratum in which it lives. The large amount of organic matter and water of which wetland soils are composed may ventsnilla favored its growth; a response which has been documented under laboratory conditions Aponte, This venyanilla capacity for growth and regeneration, characteristic of the species, is probably the best explanation of the spatial differences of recovery in the affected area at ed end of the study Figura 6.
In this study, the reed beds were found to recover rapidly after the fire. However, it should also be remembered that fauna may be affected by fire Knapp et al. This index varies between 0. The value faunw day was 0. The results of the present study show that diversity seems to have reached its highest value; if this trend continues, alpha diversity could be maintained if species succeed in establishing their populations or decrease if grasses and rushes begin to occupy available space by displacing other species.
Subsequent studies will enable us to test this hypothesis.
From what was observed over the days, we can identify two initial stages of post-fire succession in S. This is composed of what happened during the first 30 days after the fire, when the productivity of the affected area was maintained mostly due to the surviving stems.
In this study, this stage was characterized by the survival of bulrush stems, which despite of having been burned continued to grow. In this study, dominance is high the only species to survive in this study was the bulrush, S. This is composed of what occurred after the survival stage, a period during which the biomass of the area is regenerated through rhizome shoots.
During this stage, the shoots replace the surviving stems and biological diversity reaches its maximum value. In this study, the sequence among species for the appearance of shoots was as follows from first to last: Complementary studies in similar ecosystems will make it possible to establish whether or not this pattern is repeated during subsequent post-fire stages.
The present study describes for the first time the first stages of a natural regeneration after fire in wetlands of the Peruvian coast.
Two important post-fire stages have been identified for Schoenoplectus americanus: In both cases, it is asexual humedlaes which enables recovery of the affected area.
These results demonstrate the potential of these ecosystems for recovery after fire and the differential growth of species after disturbance by burning. Uhmedales also thank the reviewers of this manuscript for their valuable suggestions. Fire effects on aquatic ecosystems: An assessment of the current state of the science. Visual versus random-point percent cover estimations: Marine Ecology Progress Series. A comparison of three methods for estimating plant cover.
Suitability of methods for recording species numbers and cover in alpine long-term vegetation monitoring. Comparison of three vegetation monitoring methods: Relationships of the error associated with ventanjlla estimation and actual total cover. Rangeland Ecology and Management. Paleontological statistics software package for education and data analysis. Post-burn reproduction of woody plants in a neotropical savanna: Journal of Applied Ecology.
Curve Expert software V. Fire intensity, fire humedalse and burn severity: International Journal of Wildland Fire. Effect of disturbance intensity on regeneration mechanisms in a tropical dry forest. Forest Ecology and Management.