Aquatic Macroinvertebrates Diversity and Riparian Channel and Environmental Inventory in Selected Riverine Tributaries of Lake Mainit, Surigao del Norte, Philippines

Peligro, Vivian and Sularte, Rainer and Dumalagan, Ferdinand (2017) Aquatic Macroinvertebrates Diversity and Riparian Channel and Environmental Inventory in Selected Riverine Tributaries of Lake Mainit, Surigao del Norte, Philippines. In: ATBC Asia Pacific 2017 Conference, March 25-28, 2017, XTBG, China. (Submitted)

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Abstract

Aquatic macroinvertebrates are widely used as water quality bioindicators due to their sensitivity to changes in the ecosystem. Lake Mainit is the fourth largest and the deepest lake in the Philippines which serves as a major source of livelihood of the communities surrounding it. Thus, this study was conducted to assess the diversity of macro invertebrates and its implications towards the water quality of the selected riverine tributaries of Lake Mainit, Surigao del Norte. Riparian, Channel Environmental (RCE) inventory was undertaken to describe the integrity of the riparian vegetation. Selected physicochemical parameters such as temperature, pH, conductivity, total dissolved solids (TDS) and dissolved oxygen (DO) were determined to support the presence of bio indicator macro invertebrates species. Three sampling stations, each 100m long were established. A total of 27 macroinvertebrates species from 20 families were collected and were mostly arthropods (59%) and molluscs (41%). The RCE scores for the three locations –upstream, midstream and downstream garnered ―poor‖ to ―good‖ ratings. All the physicochemical parameters were within the desirable limit. Downstream was the most diverse and most favorable station for the macro invertebrates because of its intact vegetation while upstream was the least diverse probably because of environmental stress. Fifteen percent (15%) of the collected species belong to taxa 1; 19% belong to taxa 2; 33% belong to taxa 3 and 33% were not classified to any of the taxa since these organisms were not solely dependent on aquatic environment. Water Quality Index (WQI) scores of the three (3) sampling stations were rated very dirty while Average Score Per Taxon (ASPT) scores were rated very poor. Improvement of the riparian vegetation is highly recommended to enrich the diversity of macro invertebrates and analyses of heavy metals will be necessary to characterize further the water because of the presence of mining site in the study area.

Item Type: Conference or Workshop Item (Lecture)
Uncontrolled Keywords: Macroinvertebrates, diversity, riparian, riverine
Depositing User: eLib Admin
Date Deposited: 27 Jul 2017 00:11
Last Modified: 27 Jul 2017 00:11
URI: http://lib.mainit.org/id/eprint/321

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