The Company initiated a solid waste management program in 2007 in partnership with Barangay Luz, one of the neighboring barangays of the Cebu Business Park. In 2009, Barangay Luz also assisted another barangay of the Cebu I.T. Park, Barangay Apas, in a similar program. The purpose of the partnership is to manage the wastes of Cebu Business Park and Cebu IT Park, and at the same time, provide alternative livelihood opportunities to the barangay residents.
The Company identified two wastes classified as hazardous: used oil from generating sets and fluorescent lamps (with mercury content). These wastes are separately stored and disposed of by a waste treatment company specializing in the treatment and disposal of hazardous wastes, in compliance with the provisions of the Hazardous and Nuclear Wastes Act (Republic Act 6969).
The Company has continuously been implementing its defined procedure to control or prevent the damage caused by oil or diesel spills, by regular drills. We have not experienced any oil or diesel spills. In addition, our managed properties installed spill dikes on point sources of spills – at the diesel storage tanks.
The table shows the wastewater quality discharged to the sewage treatment plant from the properties. All these discharges are domestic wastewater conveyed via a network of sewer pipes and treated at the sewage treatment plant prior to discharge to the city’s drainage system as the receiving body of water.
The graph shows the year on year quarterly Biochemical Oxygen Demand (BOD) levels of the treated wastewater discharged to the nearest receiving body of water, on a quarterly basis.
A third party laboratory accredited with the DENR has been commissioned by the Company to take monthly samples and test these at their laboratory. These test results are documented in the plant’s Self-Monitoring Report, submitted quarterly to the DENR. Prior to discharge to the receiving body of water (city drains), the treated wastewater is further treated with chlorine to kill the microorganisms and bacteria that may be present. About five percent of the treated wastewater is used for irrigation purposes.
CONTRIBUTING TO BIODIVERSITY
Rapid Assessment: Flora and Fauna Study at Kan-Irag Nature Park
This report presents the information built from rapid assessment conducted in partnership with Cebu Uniting for Sustainable Water (CUSW) in two consecutive years in Kan-irag Nature Park, located in Central Cebu Protected Landscape. It is about 71 hectares and is bounded by ridgelines in the south, east and west sides of the protected area. The study includes flora inventory, structure and composition as well as fauna inventory to determine diversity of birds and bats in the area.
This report builds on the previous year’s study that assessed the general picture of Kan-irag Nature Park’s vegetation. It has a patchy landscape with four general vegetation types: open grassland, burshland, plantation and regenerating forests.
In 2012, the focus of the study was to determine the structure and compostion of the naturally regenerating forest patches found near gullies and creek and steep slopes. This serves as baseline information from which the team can compare data that will result from continuing assessments in the future. This study will also serve as a basis for the reforestation plan that will be directed towards ultimately connecting to the larger forest patches in Central Cebu like Cantipla and Tabunan.
Method. The flora survey was conducted within the sub-watershed2 in the hydrology map. The survey employed the plot method. Five 10 m x 10 m plots were established in the naturally regenerating patches after a purposive search for representative sites. All trees with diameter at breast height (DBH) greater than 5cm found within the plot were identified and measured in terms of height, DBH and crown.
Floral Composition / Species Richness . Species richness is the most commonly-used measure of diversity. It is simply the number of species found in particular area at a particular time.
A total of 16 species were found in the five 10 m x 10m plots belonging to 13 genera and 10 families. Most of the species belong to the family Moraceae(6) and euphorbiaceae (3). Out of the 6 species belonging to the Moraceae family, three of these are all Ficus species, which are dispersed by wildlife particularly bats and birds. These species are are typical of young regenerating forest, consisting mostly of pioneer species. The presence of Kakaute, Nangka, Tipolo, Santol is indicative of its past landuse. It was previously cultivated before it was converted into a nature park.
The 16 species found in the plot is comparably lower than the 72 species listed in the previous study because the present list is limited only to the trees found in the plot established in regenerating forest. On the other hand, the previous study encompassed all of the vegetation types found in Kan-irag Nature Park which included herbs, shrubs, grasses, and palms found in the area. Despite the difference in number of species, it is noteworthy that the families Moraceae and Euphorbiaceae have the most number of representative species in both studies. Species from the families of Moraceae and Euphorbiaceae are mostly pioneer species, which are the first few species that colonize degraded or open areas.
Forest Structure . The vertical (cross section) and canopy structures of the forest patches, like its composition are indicative of young regenerating forest. The canopy is partially open, such that light can still penetrate in some portions of its understory. This gives the team the opportunity for enrichment planting. Species that need shade in their seedling or sapling state like the dipterocarps may be planted in the understory. Other native and endemic species that are naturally occurring in a lowland forest in Cebu like katmon, Cebu Cinnamon, Ipil, Kamagong or Mabolo, Narra, Tindalo or Balayong can also be used in enrichment plantings to increase the plant diversity in the area. These species have been observed to have successfully established in the mixed plant within the study area.
The presence of layering in the forest patches is very encouraging because this will allow the forest to shelter a higher variety of wildlife – particularly fruit eating ones. They help disperse seeds hence, they are important in aiding natural regeneration.
The Kan-irag Nature Park is large enough to host variety of organisms to include birds and bats. At more or less 50 hectares, the area can harbor various bird and bat species in Cebu to include Cebu’s endemics namely the black shama, Cebu flowerpecker and the Cebu hawk owl. The park can also be a potential site for growing the Cebu cinnamon and many other indigenous species of the country. Having developed from a former farmland area planted to cut flowers and corn, among others some 17 years ago, the Kan-irag Nature Park has now evolved into a significant patch of mixed plantation and natural forest in the mountain area of Cebu City. To determine the significance of the park in hosting biodiversity, a rapid assessment onbirds and bats was conducted in the area by a team of researchers from Cebu Technological University-Argao campus.
The objective of the inventory was to establish transect for monitoring birds and determine the species richness, abundance and diversity of birds and bats in the Kan-irag Nature Park.
Methods. Mist nets were used to collect data on bats while transect walk was primarily used to gather data on birds supplemented by the use of mist nets. Birds seen or heard outside the e stablished transect were also included in the species list. Species were identified based on Ingle and Heaney (2001) for bats and on Kennedy, et al., (2001) for birds. Transect walk was done early in the morning, late in the afternoon and early afternoon to increase probability of encountering species.
Bats. After 40 net nights were set, a total of 232 individuals were captured distributed in five species (Table 1). Dog-faced fruit bat (Cynopterus brachyotis) was the most abundant with 128 individuals while Eonycteris spelea was the least abundant with only a single individual. It was noted that the most abundant food plant in the site is Tubog, which naturally grow in the area. It was noted that the bats are natural dispersers of this species whose fruit are relatively fleshy and big enough for birds although its seeds are very fine. It was observed in the area fruiting trees are scattered and more wildlings are growing on the forest floor.
None of the bats is endemic to the country and none is also under any threatened status. Among the five species Cynopterus brachyotis is the most abundant while Eonycteris spelaeais the least abundant having captured only a single individual. The total diversity is relatively low with only 0.125.
Birds. A total of 25 species were recorded. The list includes five species recorded outside the established transect. On the other hand, only Brown shrike was caught in the mist net.
About one-third (8) of the 25 species are considered forest residents, which implies that the vegetation in the site have started to harbor species that were known only to thrive in forest ecosystems. Considering that most of the area develops from a farm about 15 years ago, its current status suggests that some species from the neighboring forest fragments might have come to live in the area.
Five (20%) of the species are Philippine endemic, which include the two subspecies endemic to Cebu namely the Everette’s white-eye (Zosterops everetti everetti) and Crimson sunbird (Aethopyga siparaja magnifica). Based on accounts of security officers in the park, Pinknecked pigeons (Treron vernans) were found in flocks in the park. The absence of the said birds during the assessment period might be due to the non-fruiting stage of food plants in the area such as Bagalunga (Melia dubia).
Recommendations from the Study
1. Rapid assessment should be made each year to monitor the increase in the number of species especially that the vegetation is developing. As the vegetation improves, some species from the neighboring forest areas may also be found in the park.
2. The improved understory cover in the northern side may already meet the habitat requirements for Black Shama, hence a good study would be on the re-introduction of the bird in the area.
3. With the National Greening Program (NGP) of the government, species to be planted in the area should be carefully selected such as those that provide food to wildlife such as Kapuk and Balete, among others, if the area is envisioned to help harbor the biodiversity of Cebu.
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